CN103615379A - Anti-explosion vacuum pump - Google Patents
Anti-explosion vacuum pump Download PDFInfo
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- CN103615379A CN103615379A CN201310680708.1A CN201310680708A CN103615379A CN 103615379 A CN103615379 A CN 103615379A CN 201310680708 A CN201310680708 A CN 201310680708A CN 103615379 A CN103615379 A CN 103615379A
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- motor
- fitting seat
- pump housing
- exhaust
- vacuum pump
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Abstract
The invention provides an anti-explosion vacuum pump. The anti-explosion vacuum pump comprises a motor, a pump body installation base, a fixing base and a gas inlet and outlet base, wherein the gas inlet and outlet base is connected with the fixing base, a gas inlet cavity and a gas outlet cavity isolated from the gas inlet cavity are formed between the gas inlet and outlet base and the fixing base, the gas inlet cavity is communicated with a seal cavity through a gas inlet hole which is provided with a gas inlet valve, and the gas outlet cavity is communicated with the seal cavity through a gas outlet hole which is provided with a gas outlet valve block. According to the vacuum pump, the motor is sealed in the pump body installation base, and the gas inlet cavity, the gas outlet cavity and the seal cavity which are communicated with the outside are completely isolated from the inside of the pump body installation base. Therefore, when the vacuum pump works, gas can not enter the pump body installation base and can not make any contact with the motor, the gas can not be ignited to cause explosion even if sparks are generated in a work process of the motor, and a very good anti-explosion effect is achieved. The vacuum pump further has the advantages of being simple in structure, easy to implement, low in production cost and the like.
Description
Technical field
The present invention relates to a kind of vacuum pump, particularly a kind of vacuum pump with explosion prevention function.
Background technique
Vacuum pump is a kind of rotating volume-varying gas transfer pump, it is widely used in the industries such as metallurgy, chemical industry, food, electronics plated film, as the vacuum freshness retaining refrigerator occurring on present market adopts the technology of " low temperature adds vacuum ", reaches better fresh-keeping effect.So-called vacuum freshness retaining is exactly to utilize the food storage environment that vacuumizes hypoxemia of quick formation, low bacterium, volatility in fast eliminating fruits and vegetables organization internal and the storage environment gas that accelerates the ripening, can delay significantly after-ripening and the senescence process of fruits and vegetables, extend the shelf life, vacuumize the radix that can also greatly reduce germ, may cause the microorganism rotting to get rid of outside storage environment the overwhelming majority in storage environment, the corruption that has delayed to a great extent fruits and vegetables becomes process.Vacuum pump has also obtained application very widely in refrigerator as can be seen here, and has played very important effect.
Refrigeration agent in refrigerator mainly contains the refrigerator refrigerants such as chloro fluorocarbon compound such as R11, R12, R13, these refrigeration agents occur to leak or discharge after can damage the ozone layer in being diffused into the stratosphere of the earth, therefore these refrigeration agents are replaced by R600a refrigeration agent just gradually at present, R600a refrigeration agent has fabulous environmental characteristics, to atmosphere without any pollution, can not damage ozonosphere, environmental protection has therefore obtained application more and more widely in refrigerator.But R600a refrigeration agent has flammable, explosive characteristic, therefore use the components and parts on the refrigerator of this refrigeration agent should adopt explosion-proof type components and parts, avoid producing spark.On refrigerator, the motor of vacuum pump mostly is brush motor at present, is difficult to avoid spark to produce in machine operation, therefore the vacuum pump on refrigerator also must be designed to explosion-proof type vacuum pump.
At present vacuum pump being designed to the adoptable way of explosion-proof type structure is exactly that the motor on vacuum pump is changed to anti-explosion motor, thereby makes vacuum pump have explosion prevention function.Anti-explosion motor be exactly by the main body of motor be sealed in a housing can, make motor shaft stretch out housing and be connected with external agency.Vacuum pump adopts anti-explosion motor to have following shortcoming: 1) cost of production improves; 2) between the motor shaft of anti-explosion motor and housing, be motive sealing, if motor works long hours, gap between motor shaft and housing can increase, the sealing effect of housing will weaken like this, as the refrigeration agent in refrigerator now leaks, gas likely enters into enclosure interior, so just likely blasts.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of simple in structure, cost of production is low and have the vacuum pump of better explosion-proof effect.
For achieving the above object and other relevant objects, the invention provides a kind of explosion-proof vacuum pump, it comprises: a motor, one pump housing fitting seat, described motor seal in described pump housing fitting seat, described pump housing fitting seat be provided with a diaphragm mounting hole, described diaphragm mounting hole is by a diaphragm seal, the motor shaft of described motor is connected with an eccentric wheel, and described eccentric wheel is connected with a connecting rod, and described connecting rod is connected with described diaphragm; One fixed base, described fixed base is connected with described pump housing fitting seat, between described fixed base and described pump housing fitting seat, forms a Seal cage, and described diaphragm is positioned at described Seal cage; One intake and exhaust base, described intake and exhaust base is provided with suction port and relief opening, described intake and exhaust base is connected with described fixed base, between described intake and exhaust base and described fixed base, form isolated air-inlet cavity and exhaust cavity mutually, described suction port is communicated with described air-inlet cavity, described relief opening is communicated with described exhaust cavity, between described air-inlet cavity and described Seal cage, by inlet hole, be communicated with, described inlet hole is provided with air-intake valve plate, between described exhaust cavity and described Seal cage, by exhaust port, be communicated with, described exhaust port is provided with exhaust valve plate.
Preferably, in described pump housing fitting seat, be provided with a motor mounting hole, described motor is arranged in described motor mounting hole, end bracket enclosed is passed through at the two ends of described motor mounting hole, the tenminal block of described motor stretches out described pump housing fitting seat, between described tenminal block and described pump housing fitting seat, is tightly connected.
Preferably, in described motor mounting hole, be provided with a dividing plate, described dividing plate is separated into a motor installation room He Yi mechanism installation room by described motor mounting hole, described motor is positioned at described motor installation room, described eccentric wheel, connecting rod are positioned at described mechanism installation room, the motor shaft of described motor is through described dividing plate, and described motor is fixed on described dividing plate, and described diaphragm mounting hole site is on the sidewall of described mechanism installation room.
Preferably, between described end cap and described pump housing fitting seat, be provided with seal ring.
Preferably, between described fixed base and described pump housing fitting seat, be provided with seal ring, between described fixed base and described intake and exhaust base, be provided with seal ring.
Preferably, described connecting rod is connected with described diaphragm by pressing plate.
As mentioned above, explosion-proof vacuum pump of the present invention has following beneficial effect: this vacuum pump by motor seal in pump housing fitting seat, between the air-inlet cavity being in communication with the outside, exhaust cavity, Seal cage and pump housing fitting seat inside, by diaphragm, cut off completely, this vacuum pump is when carrying out work like this, gas just can not enter in pump housing fitting seat, just can there is not any contact with motor yet, even if motor produces in the course of the work spark and also can not make gas light to produce blast, therefore have extraordinary explosion-proof effect like this.The advantages such as that this vacuum pump also has is simple in structure, be easy to realize, and cost of production is low.
Accompanying drawing explanation
Fig. 1 is the explosive view of the embodiment of the present invention.
Fig. 2 is the connection diagram of the embodiment of the present invention.
Fig. 3 is the structural representation of embodiment of the present invention pump housing fitting seat one side.
Fig. 4 is the structural representation of embodiment of the present invention pump housing fitting seat opposite side.
Element numbers explanation
Embodiment
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this specification below.
Refer to Fig. 1 to Fig. 4.Notice, appended graphic the illustrated structure of this specification, ratio, size etc., equal contents in order to coordinate specification to disclose only, for person skilled in the art scholar, understand and read, not in order to limit the enforceable qualifications of the present invention, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, 2, the invention provides a kind of explosion-proof vacuum pump, this explosion-proof vacuum pump comprises a pump housing fitting seat, is provided with a motor 3 in pump housing fitting seat 4, and motor 3 is sealed in pump housing fitting seat 4.Installation for the ease of motor 3 in pump housing fitting seat 4, is provided with a motor mounting hole in pump housing fitting seat 4, motor 3 is arranged in this motor mounting hole.The equal opening in two ends of motor mounting hole 3, its front end seals by front end cover 6 and money seal ring 5, and its rear end seals by rear end cover 1 and rear seal ring 2.The tenminal block of motor stretches out pump housing fitting seat 4, between tenminal block and pump housing fitting seat, by silica gel, is connected and sealed.
On pump housing fitting seat 4, be provided with a diaphragm mounting hole 41, diaphragm mounting hole 41 is positioned on the sidewall of pump housing fitting seat 4, and the center line of diaphragm mounting hole 41 is vertical with the motor shaft axis of motor 3.Diaphragm mounting hole 41 is provided with a diaphragm 9, diaphragm 9 is connected with pump housing fitting seat 4 and diaphragm mounting hole 41 is sealed, the motor shaft of motor 3 is connected with an eccentric wheel 7, eccentric wheel 7 is connected with connecting rod 8, connecting rod 8 is connected with diaphragm 9, and motor 3 rotations just can be with dynamic diaphragm 9 to move around along rectilinear direction like this.For the ease of connecting rod 8, be connected with diaphragm 9, connecting rod 8 is connected with diaphragm 9 by a pressing plate 15, and pressing plate 15 is positioned at the central authorities of diaphragm 9, between pressing plate 15 and diaphragm 9, also should be tightly connected.
The position corresponding with diaphragm mounting hole 41 at pump housing fitting seat 4 is also provided with a fixed base 12, between fixed base 12 and pump housing fitting seat 4, is tightly connected, and between fixed base 12 and pump housing fitting seat 4, is provided with seal ring.Between fixed base 12 and pump housing fitting seat 4, form a Seal cage, diaphragm 9 is positioned at sealing chamber, and diaphragm 9 moves around and can change the volume of Seal cage in Seal cage.On fixed base 12, be also provided with an intake and exhaust base 14, intake and exhaust base 14 is provided with suction port 16 and relief opening 17, suction port 16 and relief opening 17 towards adjusting as required.Intake and exhaust base 14 is tightly connected with fixed base 12, between intake and exhaust base 14 and fixed base 12, is provided with seal ring 13.Between intake and exhaust base 14 and fixed base 12, form two mutual isolated air-inlet cavitys and exhaust cavity, suction port 16 is communicated with air-inlet cavity, and relief opening 17 is communicated with exhaust cavity.Between air-inlet cavity and Seal cage, by inlet hole, be communicated with, inlet hole is provided with air-intake valve plate 10, and air-intake valve plate 10 is positioned at Seal cage; Between exhaust cavity and Seal cage, by exhaust port, be communicated with, exhaust port is provided with exhaust valve plate 11, and exhaust valve plate 11 is positioned at exhaust cavity.
This vacuum pump is when work, motor 3 rotarily drives diaphragm 9 and moves around in Seal cage, when diaphragm 9 is extrapolated in Seal cage, smaller volume in Seal cage, pressure increases, and now air-intake valve plate 10 is closed inlet hole, and exhaust valve plate 11 is outwards mobile simultaneously opens exhaust port, gas just can enter exhaust cavity by exhaust port like this, and discharges from relief opening 17.When diaphragm 9 inwardly shrinks in Seal cage, it is large that volume in Seal cage becomes, pressure reduces, now air-intake valve plate 10 will move inward inlet hole is opened, and exhaust valve plate 11 moves inward vent closure simultaneously, and ambient atmos just can enter into air-inlet cavity by suction port 16, and enter in Seal cage from air-inlet cavity, again extrapolated when diaphragm 9, just the gas in Seal cage can be discharged again, just can reach the effect vacuumizing and so forth.
As shown in Figure 3,4, in order to reach better sealing effect, in motor mounting hole, be also provided with a dividing plate 42, dividing plate 42 is separated into motor installation room 43 He Yi mechanism installation rooms 44 by motor mounting hole, motor 3 is positioned at motor installation room 43, eccentric wheel 7, connecting rod 8 and diaphragm 9 are positioned at mechanism's installation room 44, the motor shaft of motor 3 passes hole 45 through dividing plate 42 by motor shaft, on dividing plate 42, have screw hole, motor 3 is fixed by screws on dividing plate 42, and diaphragm mounting hole 41 is positioned on the sidewall of this mechanism's installation room.Adopt this structure, motor installation room 43Yu mechanism installation room 44 separately, can pass 45 places, hole at motor shaft and seal, and can further avoid like this gas to contact with motor, thereby can play better explosion-proof effect.
This vacuum pump by motor seal in pump housing fitting seat, between the air-inlet cavity being in communication with the outside, exhaust cavity, Seal cage and pump housing fitting seat inside, by diaphragm, cut off completely, this vacuum pump is when carrying out work like this, gas just can not enter in pump housing fitting seat, just can there is not any contact with motor yet, even if motor produces in the course of the work spark and also can not make gas light to produce blast, therefore have extraordinary explosion-proof effect like this.The advantages such as that this vacuum pump also has is simple in structure, be easy to realize, and cost of production is low, are specially adapted to the vacuum freshness retaining technology of refrigerator.So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (6)
1. an explosion-proof vacuum pump, is characterized in that, it comprises:
One motor;
One pump housing fitting seat, described motor seal is in described pump housing fitting seat, described pump housing fitting seat be provided with a diaphragm mounting hole, described diaphragm mounting hole is by a diaphragm seal, the motor shaft of described motor is connected with an eccentric wheel, described eccentric wheel is connected with a connecting rod, and described connecting rod is connected with described diaphragm;
One fixed base, described fixed base is connected with described pump housing fitting seat, between described fixed base and described pump housing fitting seat, forms a Seal cage, and described diaphragm is positioned at described Seal cage;
One intake and exhaust base, described intake and exhaust base is provided with suction port and relief opening, described intake and exhaust base is connected with described fixed base, between described intake and exhaust base and described fixed base, form isolated air-inlet cavity and exhaust cavity mutually, described suction port is communicated with described air-inlet cavity, described relief opening is communicated with described exhaust cavity, between described air-inlet cavity and described Seal cage, by inlet hole, be communicated with, described inlet hole is provided with air-intake valve plate, between described exhaust cavity and described Seal cage, by exhaust port, be communicated with, described exhaust port is provided with exhaust valve plate.
2. explosion-proof vacuum pump according to claim 1, it is characterized in that: in described pump housing fitting seat, be provided with a motor mounting hole, described motor is arranged in described motor mounting hole, end bracket enclosed is passed through at the two ends of described motor mounting hole, the tenminal block of described motor stretches out described pump housing fitting seat, between described tenminal block and described pump housing fitting seat, is tightly connected.
3. explosion-proof vacuum pump according to claim 2, it is characterized in that: in described motor mounting hole, be provided with a dividing plate, described dividing plate is separated into a motor installation room He Yi mechanism installation room by described motor mounting hole, described motor is positioned at described motor installation room, described eccentric wheel, connecting rod are positioned at described mechanism installation room, the motor shaft of described motor is through described dividing plate, and described motor is fixed on described dividing plate, and described diaphragm mounting hole site is on the sidewall of described mechanism installation room.
4. explosion-proof vacuum pump according to claim 2, is characterized in that: between described end cap and described pump housing fitting seat, be provided with seal ring.
5. explosion-proof vacuum pump according to claim 2, is characterized in that: between described fixed base and described pump housing fitting seat, be provided with seal ring, between described fixed base and described intake and exhaust base, be provided with seal ring.
6. explosion-proof vacuum pump according to claim 1, is characterized in that: described connecting rod is connected with described diaphragm by pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310680708.1A CN103615379A (en) | 2013-12-13 | 2013-12-13 | Anti-explosion vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310680708.1A CN103615379A (en) | 2013-12-13 | 2013-12-13 | Anti-explosion vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103615379A true CN103615379A (en) | 2014-03-05 |
Family
ID=50166093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310680708.1A Pending CN103615379A (en) | 2013-12-13 | 2013-12-13 | Anti-explosion vacuum pump |
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| CN (1) | CN103615379A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19853050A1 (en) * | 1998-11-17 | 2000-05-25 | Lucas Ind Plc | Vacuum braking pressure amplifier vacuum pump has deflectable membrane bounding working chamber, actuator coupled to membrane with armature moved by electromagnetic coil |
| CN2423426Y (en) * | 2000-05-26 | 2001-03-14 | 庄嘉信 | Gas pumping |
| CN2893217Y (en) * | 2006-04-07 | 2007-04-25 | 陈友华 | Air pump |
| CN201053386Y (en) * | 2007-06-19 | 2008-04-30 | 邓优星 | Direct current air pump |
| CN101372958A (en) * | 2007-08-21 | 2009-02-25 | Ulvac机工株式会社 | Diaphragm pump |
| CN201836026U (en) * | 2010-11-03 | 2011-05-18 | 上海神开石油化工装备股份有限公司 | Small anti-explosion sample pump |
| CN102444566A (en) * | 2010-10-12 | 2012-05-09 | 研能科技股份有限公司 | Fluid conveying device |
| CN102536754A (en) * | 2010-11-30 | 2012-07-04 | Ulvac机工株式会社 | Pump device and pump system |
| CN203627164U (en) * | 2013-12-13 | 2014-06-04 | 苏州盟通利机电设备有限公司 | Explosion-proof vacuum pump |
-
2013
- 2013-12-13 CN CN201310680708.1A patent/CN103615379A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19853050A1 (en) * | 1998-11-17 | 2000-05-25 | Lucas Ind Plc | Vacuum braking pressure amplifier vacuum pump has deflectable membrane bounding working chamber, actuator coupled to membrane with armature moved by electromagnetic coil |
| CN2423426Y (en) * | 2000-05-26 | 2001-03-14 | 庄嘉信 | Gas pumping |
| CN2893217Y (en) * | 2006-04-07 | 2007-04-25 | 陈友华 | Air pump |
| CN201053386Y (en) * | 2007-06-19 | 2008-04-30 | 邓优星 | Direct current air pump |
| CN101372958A (en) * | 2007-08-21 | 2009-02-25 | Ulvac机工株式会社 | Diaphragm pump |
| CN102444566A (en) * | 2010-10-12 | 2012-05-09 | 研能科技股份有限公司 | Fluid conveying device |
| CN201836026U (en) * | 2010-11-03 | 2011-05-18 | 上海神开石油化工装备股份有限公司 | Small anti-explosion sample pump |
| CN102536754A (en) * | 2010-11-30 | 2012-07-04 | Ulvac机工株式会社 | Pump device and pump system |
| CN203627164U (en) * | 2013-12-13 | 2014-06-04 | 苏州盟通利机电设备有限公司 | Explosion-proof vacuum pump |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140305 |