CN113446206A - High negative pressure vacuum pump capable of working in two directions - Google Patents
High negative pressure vacuum pump capable of working in two directions Download PDFInfo
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- CN113446206A CN113446206A CN202110871062.XA CN202110871062A CN113446206A CN 113446206 A CN113446206 A CN 113446206A CN 202110871062 A CN202110871062 A CN 202110871062A CN 113446206 A CN113446206 A CN 113446206A
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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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/043—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms two or more plate-like pumping flexible members in parallel
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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
- 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
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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
- 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
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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
- 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
- F04B39/123—Fluid connections
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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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a high negative pressure vacuum pump working in two directions, which comprises a motor and a motor bracket shell, wherein an output shaft of the motor enters the motor bracket shell, an eccentric wheel is connected onto the output shaft of the motor, a connecting rod is arranged in the motor bracket shell, the left end and the right end of the connecting rod are respectively connected with two diaphragms, a through hole is formed in the middle of the connecting rod, a bearing is arranged in the through hole, and the inner circular circumferential wall of the bearing is in contact with the circumferential wall of the eccentric wheel; the left end and the right end of the motor support shell are both connected with a valve support, a closed vacuum chamber is formed between the valve support and the diaphragm, the left end of the left valve support and the right end of the right valve support are both connected with connectors, and a closed first cavity and a closed second cavity are formed between the connectors and the valve support which are connected with each other; a first one-way valve and a second one-way valve are arranged on the valve bracket; the valve support is provided with an air inlet and an air outlet, the air inlet is communicated with the first cavity, the air outlet is communicated with the second cavity, and the vacuum degree and the working efficiency of the vacuum pump can be greatly improved.
Description
Technical Field
The invention relates to the technical field of vacuum pumps, in particular to a high negative pressure vacuum pump capable of working in two directions.
Background
The vacuum pump is a device or equipment for obtaining a vacuum by evacuating a vacuum chamber by mechanical, physical, chemical, or other means. The vacuum degree that present vacuum pump can produce is lower, and the negative pressure value in the pump body is lower, leads to the work efficiency of pump low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the high negative pressure vacuum pump working in two directions, and the device can greatly improve the vacuum degree and the working efficiency of the vacuum pump.
A high negative pressure vacuum pump working in two directions comprises a motor and a motor bracket shell, wherein the left end and the right end of the motor bracket shell are provided with openings, the motor is fixed on the motor bracket shell, an output shaft of the motor enters the motor bracket shell, an eccentric wheel is connected onto the output shaft of the motor, two diaphragms are arranged in the motor bracket shell, a connecting rod is arranged in the motor bracket shell and can move left and right in the motor bracket shell, the left end and the right end of the connecting rod are respectively connected with the two diaphragms, a through hole is formed in the middle of the connecting rod, a bearing is arranged in the through hole, and the inner circular circumferential wall of the bearing is contacted with the circumferential wall of the eccentric wheel;
the left end and the right end of the motor support shell are both connected with a valve support, a closed vacuum chamber is formed between the valve support and the diaphragm, the left end of the left valve support and the right end of the right valve support are both connected with connectors, and a closed first cavity and a closed second cavity are formed between the connectors and the valve support which are connected with each other;
the valve bracket is provided with a first one-way valve and a second one-way valve, the first one-way valve allows gas to flow into the vacuum chamber from the first cavity, and the second one-way valve allows gas to flow into the second cavity from the vacuum chamber;
the valve support is provided with an air inlet and an air outlet, the air inlet is communicated with the first cavity, the air outlet is communicated with the second cavity, the air inlet on one valve support is connected with the air outlet on the other valve support through a communicating pipe, the air inlet on the other valve support is connected with the air outlet of the working device when in use, the motor is started, the connecting rod can be driven to move left and right, and then the diaphragm is driven to move to discharge the gas in the vacuum chamber.
Preferably, the first check valve and the second check valve are umbrella valves, each umbrella valve comprises a supporting column and an umbrella cover, each umbrella cover is made of elastic materials, two fixing holes are formed in a valve support, the supporting columns of the first check valve and the second check valve are fixed in the two fixing holes respectively, the umbrella cover of the first check valve is located in the vacuum chamber, the umbrella cover of the second check valve is located in the second cavity, a first air inlet hole and a second air outlet hole are formed in the valve support, the umbrella cover of the first check valve seals the first air inlet hole, and the umbrella cover of the second check valve seals the second air outlet hole.
Preferably, a sealing gasket is arranged at the joint of the coupler and the valve bracket.
Preferably, the diaphragm and the connecting rod are fixed through a diaphragm screw, and the diaphragm screw penetrates through the diaphragm and enters the connecting rod.
Preferably, the umbrella cover is made of silica gel or rubber.
Preferably, the connecting rod is slidably connected to the inner wall of the motor bracket shell.
Preferably, the top of the motor support shell is provided with a motor support cover, the bottom wall of the motor support cover is connected with a nylon cup, a motor shaft sleeve is arranged in the nylon cup, and the output shaft of the motor is connected with the inner circumferential wall of the motor shaft sleeve.
Preferably, the communicating pipe is a silicone tube or a PVC tube.
The invention has the beneficial effects that: in the technical scheme, the output shaft of the motor is connected with the eccentric wheel, the bearing is arranged in the through hole in the middle of the connecting rod, and the inner circular wall of the bearing is in contact with the circular wall of the eccentric wheel, so that when the motor is started, the rotary motion of the output shaft of the motor is converted into the left-right motion of the connecting rod. When the connecting rod moves rightwards, the connecting rod drives the diaphragm on the right side to move rightwards to compress gas in the vacuum chamber to be discharged, and the gas in the vacuum chamber on the right side is discharged after passing through the second one-way valve on the valve bracket on the right side; meanwhile, the gas enters the left side vacuum chamber through the first one-way valve after entering the left side first cavity from the working device. When the connecting rod moves leftwards, the membrane on the left side is driven to move leftwards, the first one-way valve on the valve support on the left side is closed, the second one-way valve is opened, the membrane compresses gas in the vacuum chamber on the left side, the gas enters the second cavity on the left side through the second one-way valve, and then the gas enters the first cavity on the right side through the gas outlet on the valve support on the left side and the communicating pipe. Under the circular motion of a motor, compress the vacuum chamber of left and right sides respectively, compare like this and do once work in the rotatory a week of original one-way vacuum pump motor, twice work of motor rotation a week in this technical scheme, through the test, the negative pressure value of this structure can improve 25% than original vacuum pump. The absolute vacuum degree is-1.0 Bar, the vacuum degree of a traditional vacuum pump can reach-0.82 Bar within 60 seconds, the vacuum degree can reach-0.95 Ba within 60 seconds, and the device can improve the vacuum degree and the working efficiency of the vacuum pump.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic external view of the present invention;
FIG. 2 is a front sectional view of the present invention;
fig. 3 is a top sectional view of the present invention.
In the drawing, 1-a connector, 2-a sealing gasket, 3-a valve bracket, 4-a diaphragm screw, 5-a fastening gasket, 6-a connecting rod, 7-a diaphragm, 8-a motor bracket shell, 9-a motor shaft sleeve, 10-a motor bracket cover, 11-a bearing, 12-a nylon cup, 13-an eccentric wheel, 14-a motor, 15-a first one-way valve, 16-a vacuum chamber, 17-a second one-way valve, 18-a first cavity, 19-a communicating pipe, 20-a first air inlet, 21-a second air outlet and 22-a second cavity.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Examples
As shown in fig. 1-3, the present embodiment provides a bi-directional working high negative pressure vacuum pump, which includes a motor 14 and a motor support housing 8, the left end and the right end of the motor support housing 8 are open, the motor 14 is fixed on the motor support housing 8, the output shaft of the motor 14 enters the motor support housing 8, the output shaft of the motor 14 is connected with an eccentric wheel 13, two diaphragms 7 are arranged in the motor support housing 8, a connecting rod 6 is arranged in the motor support housing 8, the connecting rod 6 can move left and right in the motor support housing 8, the left and right ends of the connecting rod 6 are respectively connected with the two diaphragms 7, a through hole is arranged in the middle of the connecting rod 6, a bearing 11 is arranged in the through hole, and the inner circumferential wall of the bearing 11 contacts with the circumferential wall of the eccentric wheel 13;
the left end and the right end of the motor support shell 8 are both connected with a valve support 3, a closed vacuum chamber 16 is formed between the valve support 3 and the diaphragm 7, the left end of the left valve support 3 and the right end of the right valve support 3 are both connected with a connector 1, and a closed first cavity 18 and a closed second cavity 22 are formed between the connector 1 and the valve support 3 which are connected with each other;
the valve support 3 is provided with a first one-way valve 15 and a second one-way valve 17, the first one-way valve 15 allows gas to flow from the first cavity 18 into the vacuum chamber 16, and the second one-way valve 17 allows gas to flow from the vacuum chamber 16 into the second cavity 22;
the valve supports 3 are provided with air inlets and air outlets, the air inlets are communicated with the first cavity 18, the air outlets are communicated with the second cavity 22, the air inlet on one valve support 3 is connected with the air outlet on the other valve support 3 through a communicating pipe 19, the air inlet on the other valve support 3 is connected with the air outlet of the working device when in use, and the motor 14 is started to drive the connecting rod 6 to move left and right and further drive the diaphragm 7 to move to discharge the gas in the vacuum chamber 16.
In the embodiment, the connecting rod 6 is connected with the inner wall of the motor bracket shell 8 in a sliding way, two diaphragms 7 are symmetrically arranged about the output shaft of the motor 14, and the diaphragms 7 move to discharge all gas in the vacuum chamber 16.
In this embodiment, the first check valve 15 and the second check valve 17 are first installed on the valve bracket 3 during installation, and then the valve bracket 3 and the coupler 1 are installed, and since the valve bracket 3 and the coupler 1 are separately coupled, the first check valve 15 and the second check valve 17 are simply and conveniently installed.
In this embodiment, an eccentric 13 is connected to an output shaft of a motor 14, a bearing 11 is provided in a through hole in the middle of the connecting rod 6, and an inner circumferential wall of the bearing 11 is in contact with a circumferential wall of the eccentric 13, so that when the motor 14 is started, the rotational motion of the output shaft of the motor 14 is converted into the left-right motion of the connecting rod 6. The vacuum pump is characterized in that two diaphragms 7 are arranged in a motor support shell 8, the left end and the right end of a connecting rod 6 are respectively connected with the two diaphragms 7, valve supports 3 are arranged at the left end and the right end of the motor support shell 8, a connector 1 is connected onto the valve supports 3, a vacuum chamber 16 is formed between the valve supports 3 and the diaphragms 7, a first closed cavity 18 and a second closed cavity 22 are formed between the valve supports 3 and the connector 1, a first one-way valve 15 and a second one-way valve 17 are arranged on the valve supports 3, an air inlet and an air outlet are formed in each valve support 3, the air inlet is communicated with the first cavity 18, the air outlet is communicated with the second cavity 22, and the air inlet in one valve support 3 is connected with the air outlet in the other valve support 3 through a communication pipe 19.
The working device is a device to be vacuumized, in an initial state, the diaphragm 7 is in a vertical state, the connecting rod 6 does not compress the vacuum chamber 16 at the moment, when the device is used specifically, for example, a gas inlet on the right valve support 3 is communicated with a gas outlet on the left valve support 3 through a communicating pipe 19, then the gas inlet on the left valve support 3 is connected with a gas outlet of the working device, the gas outlet on the right valve support 3 is opened, when the connecting rod 6 moves rightwards, the connecting rod 6 drives the diaphragm 7 on the right side to move rightwards to compress gas in the right vacuum chamber 16 to be discharged, and at the moment, because the first one-way valve 15 on the right valve support 3 is in a closed state, the gas in the right vacuum chamber 16 is discharged after passing through the second one-way valve 17 on the right valve support 3; at the same time, the connecting rod 6 drives the diaphragm 7 on the left side to move to the right, and the gas enters the first cavity 18 on the left side from the working device and then enters the left vacuum chamber 16 through the first check valve 15. When the connecting rod 6 moves leftwards, the diaphragm 7 on the left side is driven to move leftwards, the first one-way valve 15 on the valve support 3 on the left side is closed, the second one-way valve 17 is opened, the diaphragm 7 compresses gas in the vacuum chamber 16 on the left side to enter the second cavity 22 on the left side through the second one-way valve 17, then the gas enters the first cavity 18 on the right side through the gas outlet on the valve support 3 on the left side and the communicating pipe 19, at the moment, the volume of the vacuum chamber 16 on the right side is increased because the diaphragm 7 on the right side also moves leftwards, the pressure is reduced, and the gas enters the vacuum chamber 16 on the right side from the first cavity 18 on the right side through the first one-way valve 15 on the valve support 3 on the right side. In this way, the connecting rod 6 reciprocates, and the vacuum chambers 16 on the left and right sides are respectively compressed under one circular motion of the motor 14, so that compared with the original one-way vacuum pump motor 14 which performs one work after rotating one circle, the motor 14 performs two works after rotating one circle in the embodiment, and through tests, the negative pressure value of the structure can be improved by 25% compared with the original vacuum pump. The absolute vacuum degree is-1.0 Bar, the vacuum degree of a traditional vacuum pump can reach-0.82 Bar within 60 seconds, the vacuum degree can reach-0.95 Ba within 60 seconds, and the device can improve the vacuum degree and the working efficiency of the vacuum pump.
In the present embodiment, the air inlet and the air outlet are provided in the valve holder 3, so that the lengths of the first cavity 18, the second cavity 22, and the coupling 1 in the left-right direction can be reduced, and the overall size of the apparatus can be made smaller.
In this embodiment, the first check valve 15 and the second check valve 17 are both umbrella valves, each umbrella valve includes a supporting pillar and an umbrella cover, each umbrella cover is made of an elastic material, the valve support 3 is provided with two fixing holes, the supporting pillars of the first check valve 15 and the second check valve 17 are respectively fixed in the two fixing holes, the umbrella cover of the first check valve 15 is located in the vacuum chamber 16, the umbrella cover of the second check valve 17 is located in the second cavity 22, the valve support 3 is provided with a first air inlet 20 and a second air outlet 21, the umbrella cover of the first check valve 15 seals the first air inlet 20, and the umbrella cover of the second check valve 17 seals the second air outlet 21.
During the use, for example when compressing the vacuum chamber 16 on the left side, the umbrella face of first check valve 15 is extruded and is tightly laminated in vacuum chamber 16 inner wall and seals first inlet port 20 this moment, gaseous second exhaust hole 21 discharges in second cavity 22 after pushing up the umbrella face of second check valve 17, so realize the function of first check valve 15 and second check valve 17, the check valve simple structure that this structure set up, the effect is preferred, the cost is lower, high durability and convenient installation, first inlet port 20 and second exhaust hole 21 can set up to a plurality ofly, set up first check valve 15 and second check valve 17 cooperation connector 1 and valve support 3 like this simultaneously, can simplify the installation of vacuum pump, the umbrella face is made by silica gel or rubber in this embodiment.
In the embodiment, the joint of the coupler 1 and the valve bracket 3 is provided with a sealing gasket 2, so that the coupler 1 and the valve bracket 3 are sealed.
In this embodiment, the diaphragm 7 and the connecting rod 6 are fixed by the diaphragm screw 4, and the diaphragm screw 4 penetrates through the diaphragm 7 and enters the connecting rod 6.
In this embodiment, the top of the motor support shell 8 is provided with a motor support cover 10, the bottom wall of the motor support cover 10 is connected with a nylon cup 12, a motor shaft sleeve 9 is arranged in the nylon cup 12, and the output shaft of the motor 14 is connected with the inner circumferential wall of the motor shaft sleeve 9. The nylon cupola 12 and the motor shaft sleeve 9 form a thrust bearing, so that the movement is more stable.
In this embodiment, the communicating tube 19 is a silicone tube or a PVC tube.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. A high negative pressure vacuum pump working in two directions is characterized by comprising a motor (14) and a motor support shell (8), wherein the left end and the right end of the motor support shell (8) are provided with openings, the motor (14) is fixed on the motor support shell (8), an output shaft of the motor (14) enters the motor support shell (8), an eccentric wheel (13) is connected onto the output shaft of the motor (14), two diaphragms (7) are arranged in the motor support shell (8), a connecting rod (6) is arranged in the motor support shell (8), the connecting rod (6) can move left and right in the motor support shell (8), the left end and the right end of the connecting rod (6) are respectively connected with the two diaphragms (7), a through hole is formed in the middle of the connecting rod (6), a bearing (11) is arranged in the through hole, and the inner circumferential wall of the bearing (11) is contacted with the circumferential wall of the eccentric wheel (13);
the left end and the right end of the motor support shell (8) are both connected with a valve support (3), a closed vacuum chamber (16) is formed between the valve support (3) and the diaphragm (7), the left end of the left valve support (3) and the right end of the right valve support (3) are both connected with a connector (1), and a closed first cavity (18) and a closed second cavity (22) are formed between the connector (1) and the valve support (3) which are connected with each other;
a first one-way valve (15) and a second one-way valve (17) are arranged on the valve bracket (3), the first one-way valve (15) allows gas to flow into the vacuum chamber (16) from the first cavity (18), and the second one-way valve (17) allows gas to flow into the second cavity (22) from the vacuum chamber (16);
the valve support (3) is provided with an air inlet and an air outlet, the air inlet is communicated with the first cavity (18), the air outlet is communicated with the second cavity (22), the air inlet on one valve support (3) is connected with the air outlet on the other valve support (3) through a communicating pipe (19), the air inlet on the other valve support (3) is connected with the air outlet of the working device when in use, the motor (14) is started, the connecting rod (6) can be driven to move left and right, and then the diaphragm (7) is driven to move to discharge the gas in the vacuum chamber (16).
2. A two-way working high negative pressure vacuum pump according to claim 1, wherein the first check valve (15) and the second check valve (17) are umbrella valves, each umbrella valve comprises a support column and an umbrella cover, each umbrella cover is made of elastic material, two fixing holes are formed in the valve support (3), the support columns of the first check valve (15) and the second check valve (17) are respectively fixed in the two fixing holes, the umbrella cover of the first check valve (15) is located in the vacuum chamber (16), the umbrella cover of the second check valve (17) is located in the second cavity (22), the valve support (3) is provided with a first air inlet (20) and a second air outlet (21), the umbrella cover of the first check valve (15) seals the first air inlet (20), and the umbrella cover of the second check valve (17) seals the second air outlet (21).
3. A bi-directional working high negative pressure vacuum pump according to claim 2, wherein said umbrella cover is made of silica gel or rubber.
4. A bi-directionally working high negative pressure vacuum pump according to claim 1, wherein a gasket (2) is provided at the junction of the coupling (1) and the valve holder (3).
5. A bi-directionally operating high negative pressure vacuum pump according to claim 1, wherein the diaphragm (7) is secured to the connecting rod (6) by a diaphragm screw (4), the diaphragm screw (4) passing through the diaphragm (7) into the connecting rod (6).
6. A bi-directionally operating high negative pressure vacuum pump according to claim 1, wherein the connecting rod (6) is slidably connected to the inner wall of the motor housing (8).
7. A bi-directional working high negative pressure vacuum pump according to claim 1, characterized in that the top of the motor support housing (8) has a motor support cover (10), the bottom wall of the motor support cover (10) is connected with a nylon cup (12), a motor shaft sleeve (9) is arranged in the nylon cup (12), and the output shaft of the motor (14) is connected with the inner circumferential wall of the motor shaft sleeve (9).
8. A bi-directional working high negative pressure vacuum pump according to claim 1, characterized in that the communication pipe (19) is a silicone tube or a PVC tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871062.XA CN113446206A (en) | 2021-07-30 | 2021-07-30 | High negative pressure vacuum pump capable of working in two directions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871062.XA CN113446206A (en) | 2021-07-30 | 2021-07-30 | High negative pressure vacuum pump capable of working in two directions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113446206A true CN113446206A (en) | 2021-09-28 |
Family
ID=77817706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110871062.XA Pending CN113446206A (en) | 2021-07-30 | 2021-07-30 | High negative pressure vacuum pump capable of working in two directions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113446206A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013290A (en) * | 2022-06-17 | 2022-09-06 | 武汉碧海云天科技股份有限公司 | Integrated low-pulsation miniature air suction pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150337819A1 (en) * | 2014-05-20 | 2015-11-26 | Ying Lin Cai | Roundel structure for five-compressing-chamber diaphragm pump |
| CN207485622U (en) * | 2017-10-31 | 2018-06-12 | 厦门爱家康科技有限公司 | A kind of binary pump |
| CN208010569U (en) * | 2018-01-15 | 2018-10-26 | 深圳华星恒泰泵阀有限公司 | A kind of modified vacuum pump |
-
2021
- 2021-07-30 CN CN202110871062.XA patent/CN113446206A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150337819A1 (en) * | 2014-05-20 | 2015-11-26 | Ying Lin Cai | Roundel structure for five-compressing-chamber diaphragm pump |
| CN207485622U (en) * | 2017-10-31 | 2018-06-12 | 厦门爱家康科技有限公司 | A kind of binary pump |
| CN208010569U (en) * | 2018-01-15 | 2018-10-26 | 深圳华星恒泰泵阀有限公司 | A kind of modified vacuum pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013290A (en) * | 2022-06-17 | 2022-09-06 | 武汉碧海云天科技股份有限公司 | Integrated low-pulsation miniature air suction pump |
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| JPH03279684A (en) | Compression device |
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Application publication date: 20210928 |
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