WO2020253070A1 - Pompe de commande sous vide à pression - Google Patents

Pompe de commande sous vide à pression Download PDF

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Publication number
WO2020253070A1
WO2020253070A1 PCT/CN2019/118671 CN2019118671W WO2020253070A1 WO 2020253070 A1 WO2020253070 A1 WO 2020253070A1 CN 2019118671 W CN2019118671 W CN 2019118671W WO 2020253070 A1 WO2020253070 A1 WO 2020253070A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum
pressure
cavity
piston
chamber
Prior art date
Application number
PCT/CN2019/118671
Other languages
English (en)
Chinese (zh)
Inventor
王卫
王偲超
Original Assignee
苏州思维医疗科技有限公司
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 苏州思维医疗科技有限公司 filed Critical 苏州思维医疗科技有限公司
Publication of WO2020253070A1 publication Critical patent/WO2020253070A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs

Definitions

  • the invention relates to a pressure vacuum control pump.
  • the purpose of the present invention is to provide a pressure vacuum control pump that can output vacuum and pressure simultaneously.
  • the technical solution adopted by the present invention is: a pressure vacuum control pump, the control pump includes a pump body, an eccentric wheel rotatably arranged on the pump body, and a device for driving the eccentric wheel to rotate.
  • the pump body is provided with a vacuum piston chamber and a pressure piston chamber.
  • the vacuum piston chamber and the pressure piston chamber are separately provided on two different sides of the eccentric, and the vacuum piston rod is slidably arranged in the axial direction.
  • the pressure piston rod is slidably arranged in the pressure piston chamber in the axial direction, a vacuum passage is provided between the vacuum chamber and the vacuum piston chamber, and the pressure chamber is connected to the pressure piston chamber.
  • a pressure air passage is provided between the pressure piston chambers, and the control pump further includes a control valve for controlling the communication between the vacuum air passage and the pressure air passage.
  • the vacuum container further has a receiving cavity, which is not connected to the vacuum cavity and the pressure cavity, and the seat body of the motor is arranged in the receiving cavity.
  • the vacuum container has a cylindrical shape
  • the receiving cavity is located in the middle of the vacuum container
  • the vacuum cavity and the pressure cavity are in a semi-annular shape
  • the vacuum cavity and the pressure cavity are in a circumferential direction. It is arranged at intervals on the circumference of the receiving cavity.
  • the seat body of the motor has a cylindrical shape, and the seat body is cooperatively received in the receiving cavity along a circumferential direction.
  • control valve includes a first one-way valve provided at the vacuum passage and unidirectionally connected to the vacuum piston chamber by the vacuum chamber, and a first check valve provided at the pressure air passage and connected by the The pressure piston chamber unidirectionally communicates with the second one-way valve of the pressure chamber.
  • the pump body has an accommodation cavity located between the pressure piston cavity and the vacuum piston cavity, the eccentric is rotatably arranged in the accommodation cavity, and the output shaft of the motor extends into Into the containing cavity and connected with the eccentric wheel.
  • the vacuum piston rod includes a first rod body, a first piston provided at one end of the first rod body, a first through hole is provided on the other end of the first rod body, and the eccentric wheel passes through the first rod.
  • the first rod body is driven to reciprocate linearly during the perforation and when it rotates;
  • the pressure piston rod includes a second rod body, a second piston provided at one end of the second rod body, and the other end of the second rod body is provided with The second perforation, the eccentric wheel is arranged in the second perforation and drives the second rod body to reciprocate linearly when rotating.
  • first rod body and the second rod body are integrally provided, and the first through hole and the second through hole are the same hole.
  • the cross section of the eccentric wheel is circular, and the axis line of the eccentric wheel and the axis line of the output shaft of the motor are parallel to each other.
  • the pump body has an accommodation cavity located between the pressure piston cavity and the vacuum piston cavity, the eccentric is rotatably arranged in the accommodation cavity, and the output shaft of the motor extends into Into the accommodating cavity and connected with the eccentric wheel;
  • the vacuum container is cylindrical, and it also has a accommodating cavity, the accommodating cavity is not connected to the vacuum cavity and the pressure cavity, the motor
  • the seat body is set in the receiving cavity.
  • the vacuum container has a cylindrical shape
  • the receiving cavity is located in the middle of the vacuum container
  • the vacuum cavity and the pressure cavity are in a semi-annular shape
  • the vacuum cavity and the pressure cavity are in a circumferential direction.
  • the seat body of the motor Spacedly arranged around the circumference of the receiving cavity, the seat body of the motor is cylindrical, and the seat body is cooperatingly received in the receiving cavity along the circumferential direction.
  • the cross section of the eccentric wheel is circular, the axis line of the eccentric wheel and the axis line of the output shaft of the motor are parallel to each other, and the vacuum piston rod includes a first rod body arranged on the first rod.
  • a first piston at one end of a rod, a first perforation is provided on the other end of the first rod, and the eccentric is arranged in the first perforation and drives the first rod to reciprocate linearly when rotating;
  • the pressure piston rod includes a second rod body, a second piston provided at one end of the second rod body, a second perforation is provided on the other end of the second rod body, and the eccentric is inserted in the second perforation. When rotating, the second rod body is driven to reciprocate linearly.
  • the vacuum container is further provided with a vacuum outlet connecting the vacuum chamber with the outside, and a pressure outlet connecting the pressure chamber with the outside.
  • the pressure vacuum pump of the present invention integrates the two functions of a vacuum pump and a pressure pump, can output vacuum and pressure at the same time, and has a large output flow and low noise.
  • the structure is small and compact, and can be used in conjunction with small medical devices such as oxygen generators.
  • Figure 1 is a front view of the pressure vacuum control pump of the present invention
  • Figure 2 is a side view of the pressure vacuum control pump of the present invention
  • Figure 3 is a bottom view of the pressure vacuum control pump of the present invention.
  • Fig. 4 is a schematic sectional view of the structure along the B-B direction in Fig. 3;
  • Fig. 5 is a schematic sectional view of the structure along the F-F direction in Fig. 4;
  • Fig. 6 is a schematic sectional view of the structure along the O-O direction in Fig. 2;
  • Fig. 7 is a schematic sectional view of the structure along the R-R direction in Fig. 2;
  • a pressure vacuum control pump includes a pump body 1 and a vacuum container 2 arranged on the pump body 1, an eccentric wheel 4 rotatably arranged on the pump body 1, and The motor 3 that drives the eccentric wheel 4 to rotate, and the vacuum piston rod 5 and the pressure piston rod 6 that are driven by the eccentric wheel 4 to perform reciprocating linear motion.
  • the vacuum container 2 has a vacuum chamber 21 and a pressure chamber 22 that are isolated from each other but not connected to each other.
  • the pump body 1 is provided with a vacuum piston chamber 7 and a pressure piston chamber 8.
  • the vacuum piston chamber 7 and the pressure piston chamber 8 are separately provided on the eccentric wheel 4.
  • the vacuum piston rod 5 is slidably arranged in the vacuum piston chamber 7 in the axial direction
  • the pressure piston rod 6 is slidably arranged in the pressure piston chamber 8 in the axial direction.
  • a vacuum air passage 211 is provided between the vacuum chamber 21 and the vacuum piston chamber 7, and a pressure air passage 221 is provided between the pressure chamber 22 and the pressure piston chamber 8.
  • the control pump also includes a control valve (not shown in the figure) for controlling the passage of the vacuum air passage 211 and the pressure air passage 221.
  • the vacuum container 2 further has a receiving cavity 23 which is not connected with the vacuum cavity 21 and the pressure cavity 22, and the seat 31 of the motor 3 is arranged in the receiving cavity 23.
  • the vacuum container 2 is cylindrical
  • the receiving cavity 23 is located in the middle of the vacuum container 2
  • the vacuum cavity 21 and the pressure cavity 22 are both in a semi-annular shape
  • the vacuum cavity 21 and the pressure cavity 22 are circumferentially spaced in The circumference of the receiving cavity 23.
  • the cross section of the receiving cavity 23 is circular
  • the seat 31 of the motor 3 is cylindrical
  • the seat 31 is cooperatingly received in the receiving cavity 23 along the circumferential direction.
  • the pump body 1 has an accommodation cavity 9 between the pressure piston cavity 7 and the vacuum piston cavity 8.
  • the eccentric 4 is rotatably arranged in the accommodation cavity 9, and the output shaft 32 of the motor 3 is deeply accommodated. It is placed in the cavity 9 and connected with the eccentric wheel 4.
  • the vacuum piston rod 5 includes a first rod body 51 and a first piston 52 provided at one end of the first rod body 51.
  • the other end of the first rod body 51 is provided with a first perforation.
  • the eccentric wheel 4 is inserted in the first perforation and When rotating, the first rod body 51 is driven to make a reciprocating linear movement;
  • the pressure piston rod 6 includes a second rod body 61 and a second piston 62 provided at one end of the second rod body 61.
  • the other end of the second rod body 61 is provided with a second perforation, which is eccentric
  • the wheel 4 passes through the second perforation and drives the second rod body 61 to make a reciprocating linear movement when rotating.
  • first rod body 51 and the second rod body 61 may be integrated, and the first through hole and the second through hole are the same.
  • the cross-section of the eccentric 4 is circular, and the axis of the eccentric 4 and the axis of the output shaft 32 of the motor 3 are parallel to each other.
  • the bearing 10 and the eccentric 4 are fitted and connected in the above-mentioned perforation to make the motor
  • the eccentric wheel 4 is driven to rotate accordingly, thereby simultaneously pushing the vacuum piston rod 5 and the pressure piston rod 6 to make a linear reciprocating movement in the left and right directions.
  • the control valve includes a first one-way valve located at the vacuum passage 211 and one-way communication with the vacuum piston chamber 7 from the vacuum chamber 21, and a second one-way valve located at the pressure air passage 221 and one-way communication with the pressure chamber 22 from the pressure piston chamber 8. Two one-way valve.
  • the vacuum container 2 is also provided with a vacuum outlet 212 connecting the vacuum chamber 21 with the outside, and a pressure outlet 222 connecting the pressure chamber 22 with the outside, for respectively outputting vacuum and pressure to external equipment.
  • the eccentric wheel 4 When the motor 3 works, the eccentric wheel 4 is driven to rotate.
  • the eccentric wheel 4 has the farthest distal end and the closest proximal end to the axis line of the output shaft 32 of the motor 3.
  • the proximal end of the eccentric 4 gradually rotates to the right, so that the vacuum piston rod 5 is pushed to the left while pulling the pressure piston rod 6 to move to the left.
  • the vacuum piston chamber 7 is exhausted outward, and the pressure piston chamber 8 is sucked inward. gas.
  • the eccentric wheel 4 continues to rotate.
  • the distal end of the eccentric wheel 4 gradually rotates to the right side, the distal end of the eccentric wheel 4 gradually rotates to the left side, so that the pressure piston rod 6 moves to the right while pulling the vacuum piston rod 5 to move to the right
  • the volume of the vacuum piston chamber 7 gradually increases, so that the first one-way valve is opened to inhale air through the vacuum passage 211, so as to vacuumize the vacuum chamber 21;
  • the volume of the pressure piston chamber 8 gradually decreases, so that The two one-way valves are opened to input pressure gas into the pressure chamber 22. In this way, vacuum and pressure are simultaneously output.
  • the pressure vacuum pump of the present invention integrates the two functions of a vacuum pump and a pressure pump, can output vacuum and pressure at the same time, has a large output flow, low noise, small and compact structure, and can be used in conjunction with small medical devices such as oxygen generators .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention concerne une pompe de commande sous vide à pression, qui comprend un corps de pompe (1), une roue excentrique (4) disposée de manière rotative sur le corps de pompe (1), un moteur (3) pour entraîner la roue excentrique (4) en rotation, une tige de piston à vide (5) et une tige de piston de pression (6), qui sont entraînées par la roue excentrique (4) pour effectuer un mouvement de va-et-vient linéaire et un récipient sous vide (2) disposé sur le corps de pompe (1), le récipient sous vide (2) étant pourvu d'une chambre à vide (21) et d'une chambre de pression (22) qui sont isolées l'une de l'autre, le corps de pompe (1) est pourvu d'une chambre de piston sous vide (7) et d'une chambre de piston de pression (8), la chambre de piston sous vide (7) et la chambre de piston de pression (8) étant disposées sur les deux côtés opposés de la roue excentrique (4), et la tige de piston à vide (5) pouvant coulisser axialement dans la chambre de piston sous vide (7). La pompe à vide sous pression intègre deux fonctions d'une pompe à vide et d'une pompe de pression, peut simultanément délivrer le vide et la pression, présente un grand débit de sortie, un faible bruit, une structure petite et compacte, et peut être utilisée en coopération avec un petit dispositif médical tel qu'un générateur d'oxygène.
PCT/CN2019/118671 2019-06-18 2019-11-15 Pompe de commande sous vide à pression WO2020253070A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910525620.X 2019-06-18
CN201910525620.XA CN110230585A (zh) 2019-06-18 2019-06-18 压力真空控制泵

Publications (1)

Publication Number Publication Date
WO2020253070A1 true WO2020253070A1 (fr) 2020-12-24

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PCT/CN2019/118671 WO2020253070A1 (fr) 2019-06-18 2019-11-15 Pompe de commande sous vide à pression

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CN (1) CN110230585A (fr)
WO (1) WO2020253070A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114909856A (zh) * 2022-04-24 2022-08-16 天津大学 一种可以提供负压功能的制冷系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110230585A (zh) * 2019-06-18 2019-09-13 苏州思维医疗科技有限公司 压力真空控制泵
CN115750256B (zh) * 2022-10-28 2023-06-06 宁波钱湖石油设备有限公司 一种自清洁的往复泵

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Publication number Priority date Publication date Assignee Title
CN201187431Y (zh) * 2007-12-26 2009-01-28 天津市同业科技发展有限公司 双压力负压泵
CN202091139U (zh) * 2011-05-26 2011-12-28 北京康斯特仪表科技股份有限公司 高压双向微型电动气泵
CN104121160A (zh) * 2013-04-23 2014-10-29 上海旭岛汽车零部件有限公司 双摇摆球面活塞式电动真空泵
DE102013113351A1 (de) * 2013-12-03 2015-06-03 Pfeiffer Vacuum Gmbh Verfahren zur Kalibrierung einer Membranvakuumpumpe sowie Membranvakuumpumpe
CN107642680A (zh) * 2016-07-22 2018-01-30 北京康斯特仪表科技股份有限公司 一种微型智能真空和增压气源模块
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CN110230585A (zh) * 2019-06-18 2019-09-13 苏州思维医疗科技有限公司 压力真空控制泵

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114909856A (zh) * 2022-04-24 2022-08-16 天津大学 一种可以提供负压功能的制冷系统

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