WO2020125033A1 - Structure de pompe en alliage d'aluminium de pompe à vide, et outil de rodage pour l'usinage de corps de pompe - Google Patents

Structure de pompe en alliage d'aluminium de pompe à vide, et outil de rodage pour l'usinage de corps de pompe Download PDF

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Publication number
WO2020125033A1
WO2020125033A1 PCT/CN2019/100711 CN2019100711W WO2020125033A1 WO 2020125033 A1 WO2020125033 A1 WO 2020125033A1 CN 2019100711 W CN2019100711 W CN 2019100711W WO 2020125033 A1 WO2020125033 A1 WO 2020125033A1
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WO
WIPO (PCT)
Prior art keywords
pump
aluminum alloy
honing
positioning
vacuum pump
Prior art date
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PCT/CN2019/100711
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English (en)
Chinese (zh)
Inventor
陈鑫
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陈鑫
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Publication date
Application filed by 陈鑫 filed Critical 陈鑫
Publication of WO2020125033A1 publication Critical patent/WO2020125033A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/08—Honing tools
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • 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

Definitions

  • the invention relates to the field of refrigeration maintenance, in particular to an aluminum alloy pump body structure of a vacuum pump that is light in weight, convenient to carry and use, and a honing head used for processing the pump body.
  • Rotary vane vacuum pumps are commonly used for refrigeration maintenance, and the existing pump vane vacuum pump body materials are cast iron, resulting in a large weight, but in many refrigeration maintenance applications, users need to carry the vacuum pump separately, or take the The assembly equipment with vacuum pump is transported to the application site for use, and the heavy-weight vacuum pump body directly causes the user to handle and use difficult, affects the normal use of the customer, and even increases the customer's cost of use.
  • the invention mainly provides an aluminum alloy pump body structure of a vacuum pump with a simple structure, light weight, easy to carry and use, and a honing head used for processing the pump body, which solves the heavy weight of the vacuum pump existing in the prior art , Difficult to carry and use vacuum pumps during refrigeration maintenance, which affects the normal use of customers, and even raises the technical problems of customers.
  • an aluminum alloy pump body structure of a vacuum pump including a pump stator and a pump back cover mounted on the open end of the pump stator, the pump stator and the pump back cover Combined to form a pump cavity, the pump rotor is eccentrically installed in the pump cavity, the pump stator and the pump back cover are made of aluminum alloy, and the surface of the pump stator and the pump back cover corresponding to the pump cavity are provided with wear-resistant modification Floor.
  • the pump stator and the pump back cover of the vacuum pump body are made of aluminum alloy. Because the density of aluminum alloy is only one third of the density of cast iron, the weight of the vacuum pump is greatly reduced.
  • the aluminum alloy has low hardness and wear resistance.
  • the performance is poor, so by setting a wear-resistant modified layer on the surface of the pump cavity, the wear-resistant modified layer is used to improve the hardness and wear resistance of the pump cavity, while reducing the weight and satisfying the use function, the structure is simple, compared with the traditional cast iron pump body
  • the light weight of the structure is about 35%, which facilitates the user to carry, carry and use, and indirectly reduces the user's cost of use.
  • the wear-resistant modified layer is formed by micro-arc oxidation treatment.
  • Micro-arc oxidation also known as micro-plasma oxidation, is a combination of electrolyte and corresponding electrical parameters. It is based on the instantaneous high-temperature and high-pressure effect of arc discharge on the surface of aluminum, magnesium, titanium and their alloys.
  • the ceramic membrane layer has the advantages of high surface hardness, good wear resistance, reliable process, simple equipment and convenient operation. For this reason, the wear-resistant modified layer formed by micro-arc oxidation processing has a simple process and reliable surface performance of the pump cavity, which can ensure the operation requirements of the vacuum pump.
  • the wear-resistant modified layer is formed by surface hardening.
  • Surface hardening refers to the hardening of the surface of the part by carburizing, nitriding, hard anodizing, chrome plating, surface quenching and metalizing, etc., but the core of the part still has strong toughness treatment, which can be improved by surface hardening treatment.
  • the wear-resistant modified layer formed by surface hardening processing has low processing cost and simple process.
  • the pump rotor is made of aluminum alloy, and the surface of the pump rotor is also provided with a wear-resistant modified layer.
  • the pump rotor is also changed from the original cast iron material to the aluminum alloy material, and the surface treatment of the rotor forms a wear-resistant modified layer.
  • the wear-resistant modified layer is used to improve the hardness and wear resistance of the pump rotor. At the same time, the function of weight reduction is ensured.
  • the surface of the wear-resistant modified layer is ground by honing.
  • the roughness of the working surface of the pump body is further reduced, and the sealing performance of the working surface is improved to ensure the performance index of the vacuum pump and the long-term working life requirements.
  • a honing head for processing an aluminum alloy pump body of a vacuum pump includes a honing seat, and a plurality of longitudinal whetstone positioning grooves are arranged on the outer ring surface of the honing seat, and the whetstones are slidingly connected in the longitudinal whetstone positioning grooves and positioned in the longitudinal whetstones
  • the bottom of the groove is provided with a through hole, and an adjustment pin is slidingly connected in the through hole, and then the adjustment cone rod is inserted into the middle hole of the honing seat, and the cone surface of the adjustment cone rod is abutted on the inner end of the adjustment pin.
  • the lower end surface extends beyond the lower end surface of the honing seat, and a return spring that can push the oilstone to slide downward is provided above the honing seat.
  • a return spring that can push the oilstone to slide downward is provided above the honing seat.
  • a fixing block is provided on the inner end of the whetstone, opening grooves are respectively formed on the upper and lower end surfaces of the fixing block, and a positioning spring that can pull the fixing block to slide inward is elastically fixed in the opening groove.
  • the inner end of the whetstone is fixed to the fixed block, that is, the whetstone is slidingly connected to the longitudinal whetstone positioning groove through the fixed block, saving the oilstone material and the manufacturing cost of the nodule; opening grooves are provided on the upper and lower end surfaces of the fixed block to fix the positioning spring.
  • the positioning spring pulls the fixed block and the whetstone to clamp inwards.
  • the whetstone and the fixed block expand outwards against the resistance of the positioning spring under the centrifugal force to grind the middle hole, thereby reducing the circumference of the honing head in the non-working state
  • the size is convenient for it to enter the middle hole of the pump stator for processing.
  • a middle portion of the upper end surface of the honing base extends upward to form a positioning ring column, an adjusting nut is screwed on the positioning ring column, and a return spring is sleeved on the positioning ring column between the adjusting nut and the honing base.
  • the return spring is positioned by adjusting the upper end surface of the nut and the honing seat, with a simple structure and easy installation and adjustment.
  • a retaining ring is sleeved on the corresponding positioning ring column under the adjusting nut, and one end of the return spring is pressed against the retaining ring, and the other end is pressed against the honing seat.
  • the upper end of the adjusting taper rod is fixed in the middle hole of the positioning ring column by a positioning pin, both ends of the positioning pin extend outside the positioning ring column, and a positioning ring between the positioning pin and the upper end surface of the honing seat
  • An adjustment spring is set on the column.
  • the aluminum alloy pump body structure of the vacuum pump of the present invention and the honing head used for the processing of the pump body have the following advantages: the vacuum pump body accounts for about 50% of the total weight of the vacuum pump, and the density of the aluminum alloy is only three One part, so the total weight of the vacuum pump is 65% of the weight of the original casting pump body by using an aluminum alloy pump body, which greatly facilitates the carrying and use of customers; the resistance of the pump cavity is formed by micro-arc oxidation or surface hardening processing Grinding the modified layer to ensure the hardness and wear resistance of the pump cavity through the wear-resistant modified layer, which meets the normal use function of the vacuum pump while reducing weight; by grinding the surface of the wear-resistant modified layer, the working surface is further reduced The roughness improves the sealing of the working surface, ensuring the performance index of the vacuum pump and the long-term working life requirements.
  • FIG. 1 is a structural schematic diagram of the aluminum alloy pump body structure of the vacuum pump of the present invention.
  • FIG. 2 is a schematic structural view of a honing head for processing an aluminum alloy pump body of a vacuum pump according to the present invention
  • FIG. 3 is a lateral cross-sectional view shown in FIG. 2.
  • a pump stator 1 including a vacuum pump and a pump back cover 2 mounted on the open end of the pump stator 1 are enclosed by the pump stator 1 and the pump back cover 2 to form a pump cavity 3.
  • the pump rotor 4 is tangent to the inner ring surface of the pump stator 1, wherein the pump stator 1, the pump back cover 2 and the pump rotor 4 are made of aluminum alloy, and the corresponding pump in the surface of the pump rotor 4 and the pump cavity 3
  • the surfaces of the stator 1 and the back cover 2 of the pump are hardened to form a wear-resistant modified layer 5 through surface hardening.
  • the surface of the pump rotor 4, the corresponding surface of the pump stator 1 and the back cover 2 of the pump cavity 3 are formed by micro-arc oxidation treatment to form a wear-resistant modified layer 5, because the outer ring surface of the pump rotor 4 and the pump stator 1 during the operation of the vacuum pump Toroidal tangent, in order to reduce the surface roughness and improve the sealing of the tangent working face, the inner ring surface of the pump stator 1 with the wear-resistant modified layer 5 and the outer ring surface of the pump rotor 4 are ground by honing.
  • the rest is exactly the same as in Example 1.
  • a honing head for processing an aluminum alloy pump body of a vacuum pump includes an annular honing seat 6, and four longitudinal whetstone positioning grooves 7 are evenly distributed on the outer ring surface of the honing seat 6 ,
  • the longitudinal whetstone positioning groove 7 communicates with the upper and lower end surfaces of the honing seat 6, and the fixing block 12 is slidingly connected in the longitudinal whetstone positioning groove 7, and both ends of the fixing block 12 are flush with the upper and lower end surfaces of the honing seat 6 and fixed
  • the outer end of the block 12 is fixed with an oilstone 8 by bonding.
  • the two ends of the oilstone 8 extend beyond the upper and lower end surfaces of the fixed block 12, and the oilstone 8 extends radially to the outside of the longitudinal oilstone positioning groove 7 above and below the fixed block 12
  • the end surfaces are respectively provided with opening grooves 13, and the four opening grooves 13 corresponding to the upper end surface of the fixing block 12 are sheathed with a positioning spring 14, and the four opening grooves 13 corresponding to the lower end surface of the securing block 12 are also sheathed with one
  • the positioning spring 14 pulls the fixing block 12 through the two positioning springs 14 to slide inward along the longitudinal oilstone positioning groove 7.
  • two through holes 9 are opened in the radial direction.
  • the through holes 9 are matched with sliding inserts and adjustment pins 10, and the taper rod 11 is inserted and adjusted in the middle hole of the honing seat 6.
  • the adjustment cone rod 11 is provided with two cones corresponding to the upper and lower adjustment pins 10, the cone body is coaxial with the adjustment cone rod 11 and the lower diameter end is downward, and the cone surface of the adjustment cone rod 11 is abutted on the corresponding
  • the middle of the upper end surface of the honing base 6 extends coaxially upward to form a positioning ring column 15, the upper end of the adjusting cone rod 11 slides horizontally to the positioning pin 19, and the adjusting cone rod 11 is fixed by the positioning pin 19
  • an adjusting spring 20 is sleeved on the positioning ring column 15 between the positioning pin 19 and the upper end surface of the honing seat 6.
  • a retaining ring 18 is sleeved on the corresponding positioning ring column 15 above the pin 19, and the corresponding positioning ring column 15 above the retaining ring 18 is screwed up and then the adjusting nut 17 is fitted.
  • the adjustment spring 20 between the retaining ring 18 and the honing seat 6 is sleeved
  • the return spring 16 which pushes the oilstone 8 to slide downward.
  • One end of the return spring 16 abuts on the lower surface of the retaining ring 18 and the other end abuts on the honing seat 6.
  • the honing head When grinding the inner ring surface of the pump stator 1, the honing head is first sent down into the middle hole of the pump stator 1, so that the end face of the whetstone 8 corresponding to the lower end surface of the honing head abuts on the bottom surface of the middle hole of the pump stator 1, and honing When the head rotates, the oil stone 8 slides outward against the resistance of the positioning spring 14 under the action of centrifugal force and grinds the inner ring surface of the pump stator 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne une structure de pompe en alliage d'aluminium d'une pompe à vide, et un outil de rodage pour usiner un corps de pompe. La structure de pompe en alliage d'aluminium comprend un stator de pompe (1) et un couvercle de pompe arrière (2) recouvrant une extrémité d'ouverture du stator de pompe (1). Le stator de pompe (1) et le couvercle de pompe arrière (2) forment conjointement une cavité de pompe (3). Un rotor de pompe (4) est monté de manière excentrique à l'intérieur de la cavité de pompe (3). Le stator de pompe (1) et le couvercle de pompe arrière (2) sont tous deux fabriqués dans un matériau en alliage d'aluminium. La surface du stator de pompe (1) correspondant à la cavité de pompe (3) et la surface du couvercle de pompe arrière (2) sont toutes deux pourvues d'une couche modifiée résistante à l'abrasion (5).
PCT/CN2019/100711 2018-12-17 2019-08-15 Structure de pompe en alliage d'aluminium de pompe à vide, et outil de rodage pour l'usinage de corps de pompe WO2020125033A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811545487.6 2018-12-17
CN201811545487.6A CN109707628A (zh) 2018-12-17 2018-12-17 真空泵的铝合金泵体结构及用于该泵体加工的珩磨头

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Publication Number Publication Date
WO2020125033A1 true WO2020125033A1 (fr) 2020-06-25

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PCT/CN2019/100711 WO2020125033A1 (fr) 2018-12-17 2019-08-15 Structure de pompe en alliage d'aluminium de pompe à vide, et outil de rodage pour l'usinage de corps de pompe

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WO (1) WO2020125033A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109707628A (zh) * 2018-12-17 2019-05-03 陈鑫 真空泵的铝合金泵体结构及用于该泵体加工的珩磨头

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JP2005240747A (ja) * 2004-02-27 2005-09-08 Matsushita Electric Ind Co Ltd ベーンロータリ型真空ポンプ
CN201613504U (zh) * 2009-12-28 2010-10-27 哈尔滨东安汽车动力股份有限公司 一种珩磨油石规圆装置
CN102748296A (zh) * 2012-06-18 2012-10-24 浙江飞越机电有限公司 真空泵的防返油结构
CN103620091A (zh) * 2011-06-24 2014-03-05 欧瑞康莱宝真空股份有限公司 无转换层的真空泵组件
CN106695529A (zh) * 2016-12-16 2017-05-24 襄阳襄车铁达缸套铸业有限公司 一种异形内孔珩磨头
CN206536343U (zh) * 2017-01-10 2017-10-03 重庆浩茂工具制造有限公司 可调式珩磨头
CN109707628A (zh) * 2018-12-17 2019-05-03 陈鑫 真空泵的铝合金泵体结构及用于该泵体加工的珩磨头

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DE20013338U1 (de) * 2000-08-02 2000-12-28 Rietschle Werner Gmbh & Co Kg Verdichter
CN1417479A (zh) * 2001-10-31 2003-05-14 瞿斌 特种旋片式真空泵
CN201198114Y (zh) * 2008-05-13 2009-02-25 中国第一重型机械集团公司 钻床珩磨装置
CN101972977B (zh) * 2010-10-21 2013-07-31 昆山昆江数控机床有限公司 大直径珩磨头
KR20150066093A (ko) * 2013-12-06 2015-06-16 주식회사 소하 제어 기능을 내장한 차량용 전동 진공 펌프
CN104608045A (zh) * 2015-01-26 2015-05-13 成都科盛石油科技有限公司 一种精加工珩磨装置
CN205533239U (zh) * 2016-04-09 2016-08-31 温岭市麒元汽配有限公司 汽车真空泵
CN106640638A (zh) * 2017-01-20 2017-05-10 西安航天动力研究所 一种空间用爪型干式真空泵
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Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005240747A (ja) * 2004-02-27 2005-09-08 Matsushita Electric Ind Co Ltd ベーンロータリ型真空ポンプ
CN201613504U (zh) * 2009-12-28 2010-10-27 哈尔滨东安汽车动力股份有限公司 一种珩磨油石规圆装置
CN103620091A (zh) * 2011-06-24 2014-03-05 欧瑞康莱宝真空股份有限公司 无转换层的真空泵组件
CN102748296A (zh) * 2012-06-18 2012-10-24 浙江飞越机电有限公司 真空泵的防返油结构
CN106695529A (zh) * 2016-12-16 2017-05-24 襄阳襄车铁达缸套铸业有限公司 一种异形内孔珩磨头
CN206536343U (zh) * 2017-01-10 2017-10-03 重庆浩茂工具制造有限公司 可调式珩磨头
CN109707628A (zh) * 2018-12-17 2019-05-03 陈鑫 真空泵的铝合金泵体结构及用于该泵体加工的珩磨头

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