CN203384052U - Oil tank side-mounted two-stage sliding-vane rotary vacuum pump without oil pump - Google Patents
Oil tank side-mounted two-stage sliding-vane rotary vacuum pump without oil pump Download PDFInfo
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- CN203384052U CN203384052U CN201320431793.3U CN201320431793U CN203384052U CN 203384052 U CN203384052 U CN 203384052U CN 201320431793 U CN201320431793 U CN 201320431793U CN 203384052 U CN203384052 U CN 203384052U
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Abstract
The utility model discloses an oil tank side-mounted two-stage sliding-vane rotary vacuum pump without an oil pump to solve the technical problems that in the prior art, the temperature rise of a vacuum pump is high and the service life of pump oil is short, thereby causing decrease of the exhaust capacity of the vacuum pump, reduction of the limit vacuum degree and the like. The oil tank side-mounted two-stage sliding-vane rotary vacuum pump comprises a pump body and a side-mounted oil tank outside the pump body, wherein an exhaust passage clapboard is arranged between the side-mounted oil tank and the pump body, the side-mounted oil tank together with pump cavities of rear-stage and front-stage pumps form a circulation loop through lubrication passages on the exhaust passage clapboard and the pump body, one side of the exhaust passage clapboard and the pump body are enclosed into an air intake and exhaust transitional cavity and a rear-stage exhaust cavity, the other side of the exhaust passage clapboard and the side-mounted oil tank are enclosed into a middle oil storage tank, the air intake and exhaust transitional cavity is communicated with a front-stage exhaust port and a rear-stage air intake, the rear-stage air intake is lower than the front-stage exhaust port, the rear-stage exhaust cavity is communicated with a rear-stage exhaust port, the middle oil storage tank is communicated with the side-mounted oil tank, exhaust holes are formed in the exhaust passage clapboard, and exhaust valves are covered on the exhaust holes.
Description
Technical field
The utility model relates to a kind of rotary-vane vaccum pump, relate in particular to a kind of can obviously improve the speed of exhaust and ultimate vacuum not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump.
Background technique
Vacuum pump is to utilize the methods such as machinery, physics, chemistry or physical chemistry to produce, improve and maintain the device of vacuum in a certain enclosed space, it is widely used in the fields such as medication chemistry, electronic technology, vacuum drying, refrigeration, usually be divided into reciprocating vacuum pump, rotary-vane vaccum pump and molecular pump etc., rotary-vane vaccum pump wherein is as the widest model of backing pump application, and it comprises two kinds of single-stage pump and two-stage pumps.Existing twin-stage sliding vane rotary vacuum pump structure is generally that pump housing component parts is immersed in the pumping fluid in fuel tank, be the oil immersed type vacuum pump, although pumping fluid is conducive to the sealing of pump housing component parts, but be unfavorable for the heat radiation of the pump housing, simultaneously owing to all requiring the vacuum pump can be continuous in above-mentioned field, non-stop run for a long time, and vacuum pump is in long working procedure, due to the compression and fricative heat can make in the pump housing for a long time in the condition of high temperature, especially do not allow to introduce cooling water at working environment, working environment ventilates the condition such as not smooth lower time, when the pump housing of vacuum pump during for a long time in the condition of high temperature, not only affect the life-span of Sealing, and the life-span that can reduce pumping fluid (hereinafter to be referred as pump oil), make pump oil aggravation oxidation, thermal cracking, oxidized pump oil viscosity descends, acid increasing, also can produce cotton-shaped sediments, directly cause the inner sealing decline of vacuum pump, interior leakage increases, lubricity descends, friction increases, the thermal cracking of pump oil, can make the saturation vapour pressure of pump oil increase, the venting capacity of vacuum pump descends, the ultimate pressure of vacuum system descends, the oil vapor content that simultaneously oil temperature rises in the gas that the relief opening that also makes vacuum pump discharges increases, and at relief opening, forms mist of oil, not only pollutes working environment, also increase the consumption of pumping fluid, increase user cost.
Chinese patent discloses a kind of air-cooled sliding vane rotary vacuum pump with the oil temperature control system (CN202073788U), comprises rotor, blade, exhaust valve component, side-mounted fuel tank, the circulation of pump oil and oil temperature control system, motor supporting base, motor and electric control box that pump housing stator, front cover, rear end cover, lateral deviation are felt at ease and filled; In the sealing pump chamber, lateral deviation is felt at ease and rotor is housed blade is housed, motor is fixed in the motor supporting base opposite side, pump housing stator top has suction port, the rear side of pump housing stator has exhaust port, side-mounted fuel tank cavity of resorption has pump oil filter screen and filter, and side-mounted fuel tank epicoele has the vent control valve mist resistant filter, and the circulation of pump oil and oil temperature control system comprise fuel supply line, flow control valve, return tube, pump oil temperature sensor, electronic temperature controller and air-cooled pump oil cooler.Although this device can come automatic testing pump body and pump oil temperature by the oil temperature control system, when temperature rise surpasses setting value, the oil temperature control system automatically starts pump oil cooler fan electromotor pump oil is carried out to wind cooling temperature lowering, and further reduce pump body temperature by pump oil, but the vacuum pump in this structure is single-stage pump, and when in ambient temperature, higher or pump operation time is longer, therefore there is equally pump oil cooling-down effect not obvious, the working life of vacuum pump and pump oil is short, not only increase user cost, and affect the vacuum pump performance, cause the vacuum pump venting capacity to descend, the technical problems such as ultimate vacuum reduction.
Summary of the invention
The utility model mainly has been to provide a kind of pump housing and the pump oil temperature rises low, and can obviously improve the speed of exhaust of vacuum pump and ultimate vacuum not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, when having solved the vacuum pump that exists in the prior art higher or working time be longer in ambient temperature, the pump housing and pump oil temperature raise, not only make shorten the working life of vacuum pump and pump oil, increase user cost, and cause the technical problem of the decline of vacuum pump venting capacity, ultimate vacuum reduction etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, comprise the pump housing and be located at the fore pump pump chamber of the pump housing one end and the rear class pump pump chamber of the other end, be provided with the fore pump rotor in the fore pump pump chamber, be provided with the rear class pump rotor in rear class pump pump chamber, one end of fore pump rotor extends in rear class pump pump chamber and is connected with the rear class pump rotor, the other end of fore pump rotor extends to outside the pump housing and is connected with the output shaft of motor, be provided with the side fuel tank in the outside of the described pump housing, be folded with the exhaust passage dividing plate between side fuel tank and the pump housing, be provided with lubrication channel on exhaust passage dividing plate and the pump housing, the side fuel tank is by lubrication channel and rear class pump pump chamber and fore pump pump chamber formation circulation loop, wherein a side of exhaust passage dividing plate and the pump housing enclose intake and exhaust adapter cavity and rear class exhaust cavity jointly, the intake and exhaust adapter cavity is connected with prime relief opening on the fore pump pump chamber and the rear class suction port on rear class pump pump chamber, and the rear class suction port is lower than the prime relief opening, the rear class exhaust cavity is connected with the rear class relief opening on rear class pump pump chamber, oil storage in the middle of the opposite side of exhaust passage dividing plate and side fuel tank enclose jointly, middle oil storage is connected with the side fuel tank by pump housing lubricant oil oil drainage hole again, be respectively equipped with exhaust port between intake and exhaust adapter cavity and middle oil storage and on the exhaust passage dividing plate between rear class exhaust cavity and middle oil storage, on exhaust port, being covered with can be along exhaust port outlet valve in axial sliding, outlet valve infiltrates under the oil level in middle oil storage.Rear class pump pump chamber after electric motor starting on the pump housing produces vacuum, thereby pump oil is drawn into to rear class pump pump chamber from the side fuel tank, by at sandwiched exhaust passage dividing plate between side fuel tank and the pump housing, and enclose between exhaust passage dividing plate and the pump housing and form intake and exhaust adapter cavity and rear class exhaust cavity, enclose between exhaust passage dividing plate and side fuel tank and form middle oil storage, because the intake and exhaust adapter cavity is connected with prime relief opening on the fore pump pump chamber and the rear class suction port on rear class pump pump chamber, middle oil storage is connected with the side fuel tank by pump housing lubricant oil oil drainage hole again, before realizing vacuum pump by the exhaust passage dividing plate, gas circuit between rear class is connected with oil circuit, simultaneously again because exhaust port outlet valve corresponding on channel partition infiltrates in the middle oil storage be communicated with the side fuel tank, when meeting the requirement of exhaust port oil sealing, make again the side fuel tank separate with the pump housing, be that the pump housing is without being immersed in pump oil, therefore pump housing thermal diffusivity is good, be beneficial to the stable performance of vacuum pump performance, simultaneously due to the rear class suction port lower than the prime relief opening, can make the oil of the high vacuum end discharge of prime flow into smoothly the rough vacuum level, avoid producing oil in the passage between forward and backward level stifled, thereby can significantly improve vacuum ultimate pressure of a pump and the speed of exhaust.
As preferably, be provided with condenser between the described pump housing and side fuel tank, the input end of condenser is connected under oil level by the condenser filler opening on the side fuel tank, and the output terminal of condenser is communicated with on rear class pump pump chamber and fore pump pump chamber.By condenser is set, making the deep fat of side fuel tank at first enter condenser under the effect of negative pressure carries out entering rear class pump pump chamber after the condensation cooling, then wherein a part is used for the sealing of vacuum pump and lubricates, a part of pumping fluid enters the fore pump pump chamber after rear class pump pump chamber is degassed in addition, rear class pump pump chamber and fore pump pump chamber again respectively by outlet valve discharged to middle oil storage, be back to the side fuel tank finally by pump housing lubricant oil oil drainage hole, condenser has improved the radiating effect of pump oil, is beneficial to the stable performance of vacuum pump performance.
As more preferably, described rear class pump rotor extends to outside the pump housing, outside the pump housing, on corresponding rear class pump rotor, is provided with the condenser radiation fan, and the condenser coaxial rings is located at the outside of condenser radiation fan.Make the condenser wind cooling temperature lowering by the condenser radiation fan, improve the condensation cooling-down effect of condenser; Drive the rotation of condenser radiation fan by the rear class pump rotor, motor driven pump rotor and condenser radiation fan simultaneously, save manufacture cost; The condenser ring covers on outside the condenser radiation fan, good heat dissipation effect, spatial structure compact and reasonable.
As more preferably, described lubrication channel comprises the first lubrication channel and the second lubrication channel, one end of the first lubrication channel wherein is communicated under the oil level of side fuel tank, the other end is communicated in rear class pump pump chamber and fore pump pump chamber through condenser, one end of the second lubrication channel is communicated in rear class pump pump chamber and fore pump pump chamber, and the other end is communicated in pump housing lubricant oil oil drainage hole.Because rear class pump pump chamber is the rough vacuum end, deep fat in the side fuel tank enters rear class pump pump chamber after the condenser on the first lubrication channel fully dispels the heat, the fore pump pump chamber is the high vacuum end, pump oil first enters the fore pump pump chamber again through rear class pump pump chamber, affect the gas of degree of vacuum owing to containing steam etc. in pump oil, pump oil first enters the fore pump pump chamber after rear class pump pump chamber is degassed again for this reason, is beneficial to the raising of working lubrication and sealing and the fore pump pump chamber degree of vacuum of the pump housing, i.e. the raising of limiting vacuum gas; The second lubrication channel is communicated with between side fuel tank and forward and backward level pump pump chamber, and the pump oil that forward and backward level pump pump chamber is discharged is back in the side fuel tank, under the prerequisite that does not affect the vacuum pump performance, makes oil temperature reduce, rational in infrastructure, is easy to install and implement.
As preferably, described side fuel tank is the rectangular box structure be set up in parallel on pump housing right side, middle part at the side fuel tank is provided with diaphragm, the below of diaphragm forms oil storage chamber, pump housing lubricant oil oil drainage hole is positioned on the side fuel tank sidewall that oil storage chamber is corresponding, and the top of diaphragm forms filtering cavity, and in filtering cavity, level is provided with oil mist filter, one end of oil mist filter is connected with oil storage chamber, and the other end of oil mist filter is connected with atmosphere by the relief opening on the side fuel tank.When the side fuel tank of rectangular box structure and the pump housing are set up in parallel, are easy to lay and install; Be separated out oil storage chamber and filtering cavity in the side fuel tank by diaphragm, oil storage chamber is for storing pump oil, filtering cavity arranges oil mist filter, by the pump oil in the exhaust of oil mist filter adsorption vacuum pump, reduce the contaminated with oil mist of vacuum pump working environment, be conducive to reduce the operation and maintenance cost of vacuum pump, extend the working life of vacuum pump.
As preferably, be provided with return opening on the lower sidewalls of described side fuel tank, return opening is communicated with the bottom at middle oil storage.After vacuum pump is shut down, the pump oil in the middle of can making by return opening in oil storage is back in the side fuel tank slowly, reduces the resistance of start of vacuum pump, guarantees the startability of vacuum pump.
As preferably, be respectively equipped with front cover and rear end cover in described pump housing two-port, be horizontally set with central diaphragm in the receiving cavity of the pump housing, central diaphragm, front cover and the pump housing enclose airtight fore pump pump chamber jointly, and central diaphragm, rear end cover and the pump housing enclose airtight rear class pump pump chamber jointly.Enclose out airtight forward and backward level pump pump chamber by forward and backward end cap and central diaphragm on the pump housing, simple in structure, be easy to processing and assembling.
As preferably, described outlet valve comprises the confinement plate that vertically is screwed in the valve rod on the dividing plate of exhaust passage and is fixed on the circle of valve rod outboard end, slidably connect circular elasticity exhaust valve plate on the valve rod between confinement plate and exhaust passage dividing plate, exhaust port is distributed on the exhaust passage dividing plate that the elasticity exhaust valve plate is corresponding and the center of valve rod is uniform at circumferencial direction relatively.During exhaust, gas blows the elasticity exhaust valve plate and carries over the valve rod upward sliding to being flattened on the confinement plate inboard, and when the pump chamber pressure drop, during the outer gas pump chamber of the pump housing, extraneous gas promotion elasticity exhaust valve plate carries over valve rod, and also shutoff is on exhaust port, simple in structure downwards; Exhaust port is distributed in the surrounding of valve rod, guarantees that the elasticity exhaust valve plate, along valve rod smooth sliding up or down, improves the sealing reliability of elasticity exhaust valve plate.
As more preferably, be provided with several air holes on described confinement plate, and air hole is uniform at the circumferencial direction of confinement plate.By several air holes are set on confinement plate, reduce the adsorption force of confinement plate to the elasticity exhaust valve plate, meet seal request after being beneficial to elasticity exhaust valve plate Rapid reset.
As preferably, described rear class suction port is lower than prime relief opening 0.1mm to 20mm.Rational height difference between forward and backward level relief opening, effectively avoid producing oil in the passage between forward and backward level stifled, and assurance vacuum ultimate pressure of a pump and the speed of exhaust are significantly improved.
Therefore, of the present utility model do not have following advantage with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump: the vacuum produced by rear class pump pump chamber during use is drawn into condenser by pump oil from the side fuel tank, vacuum will enter rear class pump pump chamber after the cooling of pump oil again, the spatial structure compact and reasonable, without oil pump being set and external power source carries out water-cooled, cost is low, energy-conserving and environment-protective, and be conducive to stablize the degree of vacuum of vacuum system, extended the working life of pumping fluid, reduced the contaminated with oil mist of vacuum pump working environment, reduced the operation and maintenance cost of vacuum pump, extended the working life of vacuum pump simultaneously.
the accompanying drawing explanation:
Fig. 1 is that the utility model is not with the explosive view of the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump;
Fig. 2 is sectional view of the present utility model;
Fig. 3 is partial structurtes schematic diagram of the present utility model;
Fig. 4 is the enlarged view of outlet valve;
Fig. 5 is the enlarged view of exhaust passage dividing plate;
Fig. 6 is the connection diagram of the pump housing and side fuel tank;
Fig. 7 is the sectional view of side fuel tank;
Fig. 8 is oil circuit figure of the present utility model;
embodiment:
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As shown in Figure 2, of the present utility model a kind of not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, comprise the pump housing 1, be packaged with respectively front cover 28 and rear end cover 29 in the pump housing 1 two-port, receiving cavity middle part at the pump housing 1 is horizontally set with a central diaphragm 30, central diaphragm 30 is vertical with the pump housing 1 receiving cavity axis, central diaphragm 30, front cover 28 and the pump housing 1 enclose airtight fore pump pump chamber 2 jointly, central diaphragm 30, rear end cover 29 and the pump housing 1 enclose airtight rear class pump pump chamber 3 jointly, the fore pump rotor 4 that filling in fore pump pump chamber 2 interior bias, rear class pump pump chamber 3 interior bias filling a rear class pump rotor 5, one end of rear class pump rotor 5 extends to outside the pump housing 1 through rear end cover 29, an and centrifugal condenser radiation fan 19 of coaxial connection on the rear class pump rotor 5 of the pump housing 1 outer correspondence, one end of fore pump rotor 4 coaxially is connected with rear class pump rotor 5 through central diaphragm 30, the other end of fore pump rotor 4 coaxially is connected with the output shaft of motor 6 through front cover 28, as shown in Figure 1, the side fuel tank 7 of a rectangular box structure has been installed side by side in the left side of the pump housing 1, in 1 parallel sandwiched of side fuel tank 7 and the pump housing a rectangular exhaust passage dividing plate 8, as shown in Figure 3, the right side of exhaust passage dividing plate 8 and the pump housing 1 enclose intake and exhaust adapter cavity 9 and rear class exhaust cavity 10 jointly, intake and exhaust adapter cavity 9 is connected with prime relief opening 11 on fore pump pump chamber 2 and the rear class suction port 12 on rear class pump pump chamber 3, rear class exhaust cavity 10 is connected with the rear class relief opening 13 on rear class pump pump chamber 3, rear class suction port 12 wherein is lower than prime relief opening 11, both perigee distances are 1mm, as shown in Figure 6, oil storage 14 in the middle of the left side of exhaust passage dividing plate 8 and side fuel tank 7 enclose jointly, middle oil storage 14 is connected with side fuel tank 7 by pump housing lubricant oil oil drainage hole 17 again, as shown in Figure 7, have a return opening 27 on sidewall under side fuel tank 7 oil levels, the bottom that return opening 27 is communicated with at middle oil storage 14, as shown in Figure 3 and Figure 5, have three groups of exhaust ports 15 on the exhaust passage dividing plate 8 of 14 of intake and exhaust adapter cavity 9 and middle oil storages, have one group of exhaust port 15 on the exhaust passage dividing plate 8 that rear class exhaust cavity 10 and middle oil storage are 14, every group of exhaust port 15 is with four exhaust ports 15 and be ring and equidistantly arrange, on every group of exhaust port 15 all cover establish one can be along exhaust port 15 outlet valve 16 in axial sliding, under the oil level that outlet valve 16 infiltrates in middle oil storage 14.As shown in Figure 4, outlet valve 16 comprises the valve rod 34 vertically be screwed on the exhaust passage dividing plate 8 that every group of exhaust port 15 axis are corresponding, coaxially fix the confinement plate 35 of a circle at the outboard end of valve rod 34, have six air holes 37 on confinement plate 35, and six air holes 37 are uniform at circumferencial direction centered by valve rod 34, the elasticity exhaust valve plate 36 of the coaxial circle of suit of sliding on the valve rod 34 of 8, confinement plate 35 and exhaust passage dividing plate, elasticity exhaust valve plate 36 by rubber material, made and with confinement plate 35 equal diameters, when the elasticity exhaust valve plate slides to exhaust passage dividing plate 8 36 times, elasticity exhaust valve plate 36 just sealing cover encloses on corresponding exhaust port 15 together at valve rod 34.As shown in Figure 8, on exhaust passage dividing plate and the pump housing with lubrication channel, lubrication channel comprises the first lubrication channel 31 and the second lubrication channel 32, one end of the first lubrication channel 31 wherein is communicated under the oil level of side fuel tank 7, the other end is communicated in rear class pump pump chamber 3 through condenser 20, wherein a branch road is connected to fore pump pump chamber 2, one end of the second lubrication channel 32 is communicated in rear class relief opening 13 and prime relief opening 11, the other end is communicated in pump housing lubricant oil oil drainage hole 17, thereby side fuel tank 7 is by lubrication channel and rear class pump pump chamber 3 and fore pump pump chamber 2 formation circulation loops, as shown in Figure 1, condenser 20 wherein ringwise and coaxial rings cover on the outside of condenser radiation fan 19, have a condenser filler opening 21 on side fuel tank 7 corresponding above exhaust passage dividing plate 8, the input end of condenser 20 extends under the oil level in side fuel tank 7 through condenser filler opening 21, as shown in Figure 7, at the middle part of side fuel tank 7 cross setting a diaphragm 22, diaphragm 22 is separated into upper and lower two cavitys independently by side fuel tank 7, the below of diaphragm 22 is formed for storing the oil storage chamber 23 of pump oil, pump housing lubricant oil oil drainage hole 17 is positioned on side fuel tank 7 sidewalls of oil storage chamber 23 correspondences, the top of diaphragm 22 forms filtering cavity 24, in the interior level of filtering cavity 24, an oil mist filter 25 has been installed, the left end of oil mist filter 25 is connected with oil storage chamber 23, have a relief opening 26 on side fuel tank 7 sidewalls corresponding to right-hand member, oil mist filter 25 is connected with atmosphere by relief opening 26.
During use, after motor 6 starts, rear class pump pump chamber 3 on the pump housing 1 produces vacuum, thereby pump oil is drawn into to condenser 20 from side fuel tank 7 and carries out radiating and cooling, then enter rear class pump pump chamber, the oil sealing place that wherein a part of pumping fluid enters front cover 28 and rear end cover 29 is lubricated, part pump oil passes through again rear end cover 29 oil sealings and the laggard rear class pump of central diaphragm 30 pump chamber 3, also have part pump oil to enter into fore pump pump chamber 2 through central diaphragm 30 after rear class pump pump chamber 3 is degassed and be lubricated sealing, the oil gas that enters fore pump pump chamber 2 is discharged in the intake and exhaust adapter cavity 9 of side, wherein major part is expelled in the middle oil storage 14 of joint by outlet valve 16, the a small amount of oil gas wherein entered in exhaust transition chamber 9 enters into rear class pump pump chamber 3 from rear class suction port 12 again, be expelled to rear class exhaust cavity 10 by rear class pump pump chamber 3 again, by outlet valve 16, be expelled in the middle oil storage 14 of joint again, oil level in middle oil storage 14 constantly rises, until overflow and be back to side fuel tank 7 through pump housing lubricant oil oil drainage hole 17, the gas of simultaneously discharging through pump housing lubricant oil oil drainage hole 17 is separated through oil mist filter 25 again, Exhaust Gas is also collected the pumping fluid of atomization.
Specific embodiment described herein is only to design of the present utility model explanation for example.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (10)
1. one kind with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, comprise the pump housing (1) and be located at the fore pump pump chamber (2) of the pump housing (1) one end and the rear class pump pump chamber (3) of the other end, be provided with fore pump rotor (4) in fore pump pump chamber (2), be provided with rear class pump rotor (5) in rear class pump pump chamber (3), one end of fore pump rotor (4) extends in rear class pump pump chamber (3) and is connected with rear class pump rotor (5), the other end of fore pump rotor (4) extends to outside the pump housing (1) and is connected with the output shaft of motor (6), it is characterized in that: in the outside of the described pump housing (1), be provided with side fuel tank (7), be folded with exhaust passage dividing plate (8) between side fuel tank (7) and the pump housing (1), be provided with lubrication channel on exhaust passage dividing plate (8) and the pump housing (1), side fuel tank (7) is by lubrication channel and rear class pump pump chamber (3) and fore pump pump chamber (2) formation circulation loop, wherein a side of exhaust passage dividing plate (8) and the pump housing (1) enclose intake and exhaust adapter cavity (9) and rear class exhaust cavity (10) jointly, intake and exhaust adapter cavity (9) is connected with prime relief opening (11) on fore pump pump chamber (2) and the rear class suction port (12) on rear class pump pump chamber (3), and rear class suction port (12) is lower than prime relief opening (11), rear class exhaust cavity (10) is connected with the rear class relief opening (13) on rear class pump pump chamber (3), oil storage (14) in the middle of the opposite side of exhaust passage dividing plate (8) and side fuel tank (7) enclose jointly, middle oil storage (14) is connected with side fuel tank (7) by pump housing lubricant oil oil drainage hole (17) again, be respectively equipped with exhaust port (15) between intake and exhaust adapter cavity (9) and middle oil storage (14) and on the exhaust passage dividing plate (8) between rear class exhaust cavity (10) and middle oil storage (14), on exhaust port (15), being covered with can be along exhaust port (15) outlet valve (16) in axial sliding, outlet valve (16) infiltrates under the oil level in middle oil storage (14).
2. according to claim 1 not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, it is characterized in that: between the described pump housing (1) and side fuel tank (7), be provided with condenser (20), the input end of condenser (20) is connected under oil level by the condenser filler opening (21) on side fuel tank (7), and the output terminal of condenser (20) is communicated with on rear class pump pump chamber (3) and fore pump pump chamber (2).
3. according to claim 2 not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, it is characterized in that: described rear class pump rotor (5) extends to outside the pump housing (1), be provided with condenser radiation fan (19) on the rear class pump rotor (5) of correspondence outside the pump housing (1), condenser (20) coaxial rings is located at the outside of condenser radiation fan (19).
4. according to claim 2 not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, it is characterized in that: described lubrication channel comprises the first lubrication channel (31) and the second lubrication channel (32), one end of the first lubrication channel (31) wherein is communicated under the oil level of side fuel tank (7), the other end is communicated in rear class pump pump chamber (3) and fore pump pump chamber (2) through condenser (20), one end of the second lubrication channel (32) is communicated in rear class pump pump chamber (3) and fore pump pump chamber (2), and the other end is communicated in pump housing lubricant oil oil drainage hole (17).
5. described not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump according to any one in claim 1 to 4, it is characterized in that: described side fuel tank (7) is for being set up in parallel the rectangular box structure on the pump housing (1) right side, be provided with diaphragm (22) at the middle part of side fuel tank (7), the below of diaphragm (22) forms oil storage chamber (23), pump housing lubricant oil oil drainage hole (17) is positioned on side fuel tank (7) sidewall that oil storage chamber (23) is corresponding, the top of diaphragm (22) forms filtering cavity (24), in filtering cavity (24), level is provided with oil mist filter (25), one end of oil mist filter (25) is connected with oil storage chamber (23), the other end of oil mist filter (25) is connected with atmosphere by the relief opening (26) on side fuel tank (7).
6. described not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump according to any one in claim 1 to 4, it is characterized in that: be provided with return opening (27) on the lower sidewalls of described side fuel tank (7), return opening (27) is communicated with the bottom in middle oil storage (14).
7. described not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump according to any one in claim 1 to 4, it is characterized in that: in the described pump housing (1) two-port, be respectively equipped with front cover (28) and rear end cover (29), be horizontally set with central diaphragm (30) in the receiving cavity of the pump housing (1), central diaphragm (30), front cover (28) and the pump housing (1) enclose airtight fore pump pump chamber (2) jointly, and central diaphragm (30), rear end cover (29) and the pump housing (1) enclose airtight rear class pump pump chamber (3) jointly.
8. described not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump according to any one in claim 1 to 4, it is characterized in that: described outlet valve (16) comprises the valve rod (34) vertically be screwed on exhaust passage dividing plate (8) and is fixed on the confinement plate (35) of the circle of valve rod (34) outboard end, slidably connect circular elasticity exhaust valve plate (36) on the valve rod (34) between confinement plate (35) and exhaust passage dividing plate (8), exhaust port (15) is distributed in the exhaust passage dividing plate (8) that elasticity exhaust valve plate (36) is corresponding, and above also the center of valve rod (34) is uniform at circumferencial direction relatively.
9. according to claim 8 not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump, it is characterized in that: be provided with several air holes (37) on described confinement plate (35), and air hole (37) is uniform at the circumferencial direction of confinement plate (35).
10. described not with the side-mounted twin-stage sliding vane rotary vacuum pump of the fuel tank of oil pump according to any one in claim 1 to 4, it is characterized in that: described rear class suction port (12) is lower than prime relief opening (11) 0.1mm to 20mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431793.3U CN203384052U (en) | 2013-07-19 | 2013-07-19 | Oil tank side-mounted two-stage sliding-vane rotary vacuum pump without oil pump |
| PCT/CN2013/083884 WO2015007015A1 (en) | 2013-07-19 | 2013-09-22 | Two-stage rotary vane vacuum pump with side fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431793.3U CN203384052U (en) | 2013-07-19 | 2013-07-19 | Oil tank side-mounted two-stage sliding-vane rotary vacuum pump without oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203384052U true CN203384052U (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320431793.3U Expired - Lifetime CN203384052U (en) | 2013-07-19 | 2013-07-19 | Oil tank side-mounted two-stage sliding-vane rotary vacuum pump without oil pump |
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| CN (1) | CN203384052U (en) |
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| CN104179661A (en) * | 2014-07-29 | 2014-12-03 | 江苏太平洋液压机械制造有限公司 | Mini vacuum pump |
| CN105351199A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Vacuum pump |
| CN105351172A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Oil conveying mechanism suitable for vacuum pump |
| CN105351198A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Rotating mechanism applied to vacuum pump |
| CN107750308A (en) * | 2015-05-18 | 2018-03-02 | 格布尔.贝克尔有限责任公司 | The rotary slide valve vavuum pump of oil lubrication with oil separation and reprocessing device |
| CN107842502A (en) * | 2017-12-06 | 2018-03-27 | 温岭市石桥真空机械厂 | A kind of novel rotary vane type vacuum pump |
-
2013
- 2013-07-19 CN CN201320431793.3U patent/CN203384052U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179661A (en) * | 2014-07-29 | 2014-12-03 | 江苏太平洋液压机械制造有限公司 | Mini vacuum pump |
| CN107750308A (en) * | 2015-05-18 | 2018-03-02 | 格布尔.贝克尔有限责任公司 | The rotary slide valve vavuum pump of oil lubrication with oil separation and reprocessing device |
| CN105351199A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Vacuum pump |
| CN105351172A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Oil conveying mechanism suitable for vacuum pump |
| CN105351198A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Rotating mechanism applied to vacuum pump |
| CN107842502A (en) * | 2017-12-06 | 2018-03-27 | 温岭市石桥真空机械厂 | A kind of novel rotary vane type vacuum pump |
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Granted publication date: 20140108 |