WO2020253070A1 - 压力真空控制泵 - Google Patents

压力真空控制泵 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
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WO
WIPO (PCT)
Prior art keywords
vacuum
pressure
cavity
piston
chamber
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PCT/CN2019/118671
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English (en)
French (fr)
Inventor
王卫
王偲超
Original Assignee
苏州思维医疗科技有限公司
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Publication of WO2020253070A1 publication Critical patent/WO2020253070A1/zh

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    • 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

一种压力真空控制泵，包括泵体（1）、转动地设于泵体（1）上的偏心轮（4）、用于驱使偏心轮（4）旋转的马达（3）、由偏心轮（4）驱动而做往复直线运动的真空活塞杆（5）与压力活塞杆（6），以及设于泵体（1）上的真空容器（2），真空容器（2）具有相互隔绝的真空腔（21）与压力腔（22），泵体（1）上设置有真空活塞腔（7）与压力活塞腔（8），真空活塞腔（7）与压力活塞腔（8）分设于偏心轮（4）的相异两侧，真空活塞杆（5）能够沿轴向滑动地设于真空活塞腔（7）中。该压力真空泵集成了真空泵与压力泵的两种功能，能够同时输出真空与压力，其输出流量大，噪音小，结构小巧紧凑，能够与小型的医疗器械如制氧机配合使用。

Description

压力真空控制泵 技术领域
本发明涉及一种压力真空控制泵。
背景技术
在例如制氧机等器械的使用过程中，通常交替地向工作腔室内输入压力或者抽真空操作，目前通常是需要配备一台真空泵及一台压力泵来配合进行，以能够同时输出真空与压力，两台泵之间独立工作，占用空间、体积较大，且各自工作的噪音也都很大，不利于配合如制氧机等小型器械的使用。
发明内容
本发明的目的是为了提供一种压力真空控制泵，以能够同时输出真空与压力。
为达到上述目的，本发明采用的技术方案是：一种压力真空控制泵，所述控制泵包括泵体、转动地设于所述泵体上的偏心轮、用于驱使所述偏心轮旋转的马达、由所述偏心轮驱动而做往复直线运动的真空活塞杆与压力活塞杆，以及设于所述泵体上的真空容器，所述真空容器具有相互隔绝的真空腔与压力腔，所述泵体上设置有真空活塞腔与压力活塞腔，所述真空活塞腔与所述压力活塞腔分设于所述偏心轮的相异两侧，所述真空活塞杆能够沿轴向滑动地设于所述真空活塞腔中，所述压力活塞杆能够沿轴向滑动地设于所述压力活塞腔中，所述真空腔与所述真空活塞腔之间设有真空气道，所述压力腔与所述压力活塞腔之间设有压力气道，所述控制泵还包括用于控制所述真空气道与所述压力气道通断的控制阀。
优选地，所述真空容器还具有收容腔，所述收容腔与所述真空腔及所述压力腔均不连通，所述马达的座体设置在所述收容腔中。
进一步地，所述真空容器呈圆柱状，所述收容腔位于所述真空容器的中部，所述真空腔与所述压力腔均呈半环形，且所述真空腔与所述压力腔沿周向间隔地环设于所述收容腔的周部。
进一步地，所述马达的所述座体呈圆柱形，所述座体沿周向配合地收容在所述收容腔中。
优选地，所述控制阀包括设于所述真空气道处且由所述真空腔单向连通所述真空活塞腔的第一单向阀，以及设于所述压力气道处且由所述压力活塞腔单向连通所述压力腔的第二单向阀。
优选地，所述泵体具有位于所述压力活塞腔与所述真空活塞腔之间的容置腔，所述偏心轮转动地设于所述容置腔中，所述马达的输出轴伸入至所述容置腔中并与所述偏心轮连接。
进一步地，所述真空活塞杆包括第一杆体、设于所述第一杆体一端的第一活塞，所述第一杆体的另一端上设置有第一穿孔，所述偏心轮穿设在第一穿孔中且在转动时带动所述第一杆体往复直线运动；所述压力活塞杆包括第二杆体、设于所述第二杆体一端的第二活塞，所述第二杆体的另一端上设置有第二穿孔，所述偏心轮穿设在所述第二穿孔中且在转动时带动所述第二杆体往复直线运动。
更进一步地，所述第一杆体与所述第二杆体一体设置，且所述第一穿孔与所述第二穿孔为同一穿孔。
进一步地，所述偏心轮的截面呈圆形，所述偏心轮的轴心线与所述马达的输出轴的轴心线相互平行。
优选地，所述泵体具有位于所述压力活塞腔与所述真空活塞腔之间的容置腔，所述偏心轮转动地设于所述容置腔中，所述马达的输出轴伸入至所述容置腔中并与所述偏心轮连接；所述真空容器呈圆柱状，其还具有收容腔，所述收容腔与所述真空腔及所述压力腔均不连通，所述马达的座体设置在所述收容腔中。
进一步地，所述真空容器呈圆柱状，所述收容腔位于所述真空容器的中部，所述真空腔与所述压力腔均呈半环形，且所述真空腔与所述压力腔沿周向间隔地环设于所述收容腔的周部，所述马达的所述座体呈圆柱形，所述座体沿周向配合地收容在所述收容腔中。
进一步地，所述偏心轮的截面呈圆形，所述偏心轮的轴心线与所述马达的输出轴的轴心线相互平行，所述真空活塞杆包括第一杆体、设于所述第一杆体一端的第一活塞，所述第一杆体的另一端上设置有第一穿孔，所述偏心轮穿设在第一穿孔中且在转动时带动所述第一杆体往复直线运动；所述压力活塞杆包括第二杆体、设于所述第二杆体一端的第二活塞，所述第二杆体的另一端上设置有第二穿孔，所述偏心轮穿设在所述第二穿孔中且在转动时带动所述第二杆体往复直线运动。
优选地，所述真空容器上还设置有连通所述真空腔与外部的真空出口，以及连通所述压力腔与外部的压力出口。
由于上述技术方案的运用，本发明与现有技术相比具有下列优点：本发明的压力真空泵集成了真空泵与压力泵的两种功能，能够同时输出真空与压力，其输出流量大，噪音小，结构小巧紧凑，能够与小型的医疗器械如制氧机配合使用。
附图说明
附图1为本发明的压力真空控制泵的主视图；
附图2为本发明的压力真空控制泵的侧视图；
附图3为本发明的压力真空控制泵的仰视图；
附图4为沿附图3中B-B向剖视结构示意图；
附图5为沿附图4中F-F向剖视结构示意图；
附图6为沿附图2中O-O向剖视结构示意图；
附图7为沿附图2中R-R向剖视结构示意图；
其中：1、泵体；2、真空容器；21、真空腔；211、真空气道；212、真空口；22、压力腔；221、压力气道；222、压力出口；
23、收容腔；3、马达；31、座体；32、输出轴；4、偏心轮；5、真空活塞杆；51、第一杆体；52、第一活塞；6、压力活塞杆；61、第二杆体；62、第二活塞；7、真空活塞腔；8、压力活塞腔；9、容置腔；10、轴承。
具体实施方式
下面结合附图和具体的实施例来对本发明的技术方案作进一步的阐述。
参见图1至图7所示，一种压力真空控制泵，该控制泵包括泵体1和设置在泵体1上的真空容器2、转动地设于泵体1上的偏心轮4、用于驱使偏心轮4旋转的马达3，以及由偏心轮4驱动而做往复直线运动的真空活塞杆5与压力活塞杆6。
真空容器2上具有相互隔绝而互不连通的真空腔21与压力腔22，泵体1上设置有真空活塞腔7和压力活塞腔8，真空活塞腔7与压力活塞腔8分设于偏心轮4的相异两侧，真空活塞杆5能够沿轴向滑动地设于真空活塞腔7中，压力活塞杆6能够沿轴向滑动地设于压力活塞腔8中。真空腔21与真空活塞腔7之间设有真空气道211，压力腔22与压力活塞腔8之间设有压力气道221。该控制泵还包括用于控制真空气道211与压力气道221通道的控制阀(图中未示出)。
参见图4、图6及图7所示，真空容器2还具有收容腔23，该收容腔23与真空腔21及压力腔22均不连通，马达3的座体31设置在收容腔23中。本实施例中，真空容器2呈圆柱状，收容腔23位于真空容器2的中部，真空腔21与压力腔22均呈半环形，且真空腔21与压力腔22沿周向间隔地环设在收容腔23的周部。此处，收容腔23的截面呈圆形，马达3的座体31呈圆柱形，座体31沿周向配合地收容在收容腔23中。
参见各附图所示，泵体1具有位于压力活塞腔7与真空活塞腔8之间的容置腔9，偏心轮4转动地设于容置腔9中，马达3的输出轴32深入容置腔9中并与偏心轮4连接。
真空活塞杆5包括第一杆体51和设于第一杆体51一端的第一活塞52，第一杆体51的另一端上设有第一穿孔，偏心轮4穿设在该第一穿孔中且在转动时带动第一杆体51做往复直线运动；压力活塞杆6包括第二杆体61和设于第二杆体61一端的第二活塞62，第二杆体61的另一端上设置有第二穿孔，偏心轮4穿设在该第二穿孔中且在转动时带动第二杆体61做往复直线运动。
具体地，第一杆体51与第二杆体61可以采用一体设置，且第一穿孔与第二穿孔为同一穿孔。偏心轮4的截面呈圆形，该偏心轮4的轴心线与马达3输出轴32的轴心线相互平行，通过在上述穿孔中设置轴承10与偏心轮4之前予以配合连接，以使得马达3的输出轴32旋转时驱使偏心轮4相应地旋转，从而同时推动真空活塞杆5与压力活塞杆6共同地沿左右方向做直线往复运动。
控制阀包括位于真空气道211处且由真空腔21单向连通真空活塞腔7的第一单向阀，以及设于压力气道221处且由压力活塞腔8单向连通压力腔22的第二单向阀。真空容器2上还设置有连通真空腔21与外部的真空出口212，以及连通压力腔22与外部的压力出口222，以分别用于向外部设备输出真空与压力。
以下具体阐述下本实施例的工作过程：
马达3工作时驱使偏心轮4旋转，偏心轮4具有与马达3输出轴32轴心线距离最远的远端和距离最近的近端，当偏心轮4的远端逐渐旋转至左侧时，偏心轮4的近端逐渐旋转至右侧，使得真空活塞杆5被向左推动，同时拉动压力活塞杆6向左运动，此时真空活塞腔7向外排气，压力活塞腔8向内吸气。
偏心轮4继续旋转，当偏心轮4的远端逐渐旋转至右侧时，偏心轮4的远端逐渐旋转至左侧，使得压力活塞杆6向右运动，同时拉动真空活塞杆5向右运动，此时真空活塞腔7的容积逐渐增大，使得第一单向阀打开而通过真空气道211吸气，以使得真空腔21内真空化；压力活塞腔8的容积逐渐减小，使得第二单向阀打开而向压力腔22内输入压力气体。这样便同时输出了真空与压力。
综上，本发明的压力真空泵集成了真空泵与压力泵的两种功能，能够同时输出真空与压力，其输出流量大，噪音小，结构小巧紧凑，能够与小型的医疗器械如制氧机配合使用。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围内。

Claims (13)

  1. 一种压力真空控制泵，其特征在于：所述控制泵包括泵体、转动地设于所述泵体上的偏心轮、用于驱使所述偏心轮旋转的马达、由所述偏心轮驱动而做往复直线运动的真空活塞杆与压力活塞杆，以及设于所述泵体上的真空容器，所述真空容器具有相互隔绝的真空腔与压力腔，
    所述泵体上设置有真空活塞腔与压力活塞腔，所述真空活塞腔与所述压力活塞腔分设于所述偏心轮的相异两侧，所述真空活塞杆能够沿轴向滑动地设于所述真空活塞腔中，所述压力活塞杆能够沿轴向滑动地设于所述压力活塞腔中，
    所述真空腔与所述真空活塞腔之间设有真空气道，所述压力腔与所述压力活塞腔之间设有压力气道，所述控制泵还包括用于控制所述真空气道与所述压力气道通断的控制阀。
  2. 根据权利要求1所述的压力真空控制泵，其特征在于：所述真空容器还具有收容腔，所述收容腔与所述真空腔及所述压力腔均不连通，所述马达的座体设置在所述收容腔中。
  3. 根据权利要求2所述的压力真空控制泵，其特征在于：所述真空容器呈圆柱状，所述收容腔位于所述真空容器的中部，所述真空腔与所述压力腔均呈半环形，且所述真空腔与所述压力腔沿周向间隔地环设于所述收容腔的周部。
  4. 根据权利要求2所述的压力真空控制泵，其特征在于：所述马达的所述座体呈圆柱形，所述座体沿周向配合地收容在所述收容腔中。
  5. 根据权利要求1所述的压力真空控制泵，其特征在于：所述控制阀包括设于所述真空气道处且由所述真空腔单向连通所述真空活塞腔的第一单向阀，以及设于所述压力气道处且由所述压力活塞腔单向连通所述压力腔的第二单向阀。
  6. 根据权利要求1所述的压力真空控制泵，其特征在于：所述泵体具有位于所述压力活塞腔与所述真空活塞腔之间的容置腔，所述偏心轮转动地设于所述容置腔中，所述马达的输出轴伸入至所述容置腔中并与所述偏心轮连接。
  7. 根据权利要求6所述的压力真空控制泵，其特征在于：所述真空活塞杆包括第一杆体、设于所述第一杆体一端的第一活塞，所述第一杆体的另一端上设置有第一穿孔，所述偏心轮穿设在第一穿孔中且在转动时带动所述第一杆体往复直线运动；所述压力活塞杆包括第二杆体、设于所述第二杆体一端的第二活塞，所述第二杆体的另一端上设置有第二穿孔，所述偏心轮穿设在所述第二穿孔中且在转动时带动所述第二杆体往复直线运动。
  8. 根据权利要求7所述的压力真空控制泵，其特征在于：所述第一杆体与所述第二杆体一体设置，且所述第一穿孔与所述第二穿孔为同一穿孔。
  9. 根据权利要求6所述的压力真空控制泵，其特征在于：所述偏心轮的截面呈圆形，所述偏心轮的轴心线与所述马达的输出轴的轴心线相互平行。
  10. 根据权利要求1所述的压力真空控制泵，其特征在于：所述泵体具有位于所述压力活塞腔与所述真空活塞腔之间的容置腔，所述偏心轮转动地设于所述容置腔中，所述马达的输出轴伸入至所述容置腔中并与所述偏心轮连接；所述真空容器呈圆柱状，其还具有收容腔，所述收容腔与所述真空腔及所述压力腔均不连通，所述马达的座体设置在所述收容腔中。
  11. 根据权利要求10所述的压力真空控制泵，其特征在于：所述真空容器呈圆柱状，所述收容腔位于所述真空容器的中部，所述真空腔与所述压力腔均呈半环形，且所述真空腔与所述压力腔沿周向间隔地环设于所述收容腔的周部，所述马达的所述座体呈圆柱形，所述座体沿周向配合地收容在所述收容腔中。
  12. 根据权利要求10所述的压力真空控制泵，其特征在于：所述偏心轮的截面呈圆形，所述偏心轮的轴心线与所述马达的输出轴的轴心线相互平行，所述真空活塞杆包括第一杆体、设于所述第一杆体一端的第一活塞，所述第一杆体的另一端上设置有第一穿孔，所述偏心轮穿设在第一穿孔中且在转动时带动所述第一杆体往复直线运动；所述压力活塞杆包括第二杆体、设于所述第二杆体一端的第二活塞，所述 第二杆体的另一端上设置有第二穿孔，所述偏心轮穿设在所述第二穿孔中且在转动时带动所述第二杆体往复直线运动。
  13. 根据权利要求1至12任一项所述的压力真空控制泵，其特征在于：所述真空容器上还设置有连通所述真空腔与外部的真空出口，以及连通所述压力腔与外部的压力出口。
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