CN205371022U - Single -stage cone vacuum pump - Google Patents
Single -stage cone vacuum pump Download PDFInfo
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- CN205371022U CN205371022U CN201521118374.XU CN201521118374U CN205371022U CN 205371022 U CN205371022 U CN 205371022U CN 201521118374 U CN201521118374 U CN 201521118374U CN 205371022 U CN205371022 U CN 205371022U
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- impeller
- pump
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Abstract
The utility model discloses a single -stage cone vacuum pump, including the inside hollow pump body, connect in the transmission side pump cover of the transmission side of the pump body and the non -transmission side pump cover of non -transmission side, cross the axle of transmission side pump cover and non -transmission side pump cover, axle and pump body eccentric settings, eccentric settings is inclined in proper order to the pump body inside has and locates epaxial transmission side cone with the axle sleeve from the transmission side to non -transmission, impeller and non -transmission side cone, impeller and axle fixed connection, the main aspects and the transmission side pump cover fixed connection of transmission side cone, with the rotatable cone combined with of impeller behind the transmission side terminal surface of tip embedding impeller, the main aspects and the non -transmission side pump cover fixed connection of non -transmission side cone, with the rotatable cone combined with of impeller behind the non -transmission side end face of tip embedding impeller, its diameter that reduces sealed face does not greatly receive the influence of pendular ring water, is difficult for the scale deposit, when having guaranteed the high negative pressure of pump import, has avoided the defect of scale deposit locking rotor, has improved pump life.
Description
Technical field
This utility model relates to vacuum pump technology field, particularly relates to a kind of single-stage cone vacuum pump.
Background technology
Tradition liquid-ring vacuum pump structure is single-stage impeller, owing to its allotter is flat round disc type, thus often referred as flat disk pump.The center of the pump chamber of this pump housing and the design of single-stage impeller bias, so that impeller, pendular ring and pump chamber define the annular seal space of a cycle period change, it is achieved that vacuumizing and exhausting；But, the big plane of the allotter of flat disk pump forms gap sealing liquid sealing surface with impeller end face, just can ensure that the negative pressure of bleeding of vacuum pump is sufficiently large, and in gas pumping field, usually cannot ensure this seal clearance when this seal clearance is sufficiently small；This gap is too small, easily cause the big plane of impeller and allotter because of after fouling impeller stuck, so the angle in collateral security service life is set out, this seal clearance must be sufficiently large；But, this gap is excessive, causes again and cannot form effective liquid film seal between impeller end face and the big plane of allotter, causes the vacuum pump negative pressure of mash gas extraction to improve, and affects efficiency and the mine gas extraction efficiency of vacuum pump.
It addition, the impeller of tradition flat disk pump is eccentric on pump housing top, gas outlet is on the top of pump.When pumping turns, the internal air inlet of flat disk pump with give vent to anger compression stress from top to bottom, the self gravitation that the power that namely axle bears is compression stress and impeller is added；Thus power that axle bears is excessive so that the life-span of axle also shortens.
Utility model content
The purpose of this utility model is in that to propose a kind of single-stage cone vacuum pump, is greatly reduced the diameter of sealing surface, not by the impact of pendular ring water, less scaling, it is ensured that while pump inlet high negative pressure, it is to avoid the defect of fouling locking rotor, improves pump service life.
For reaching this purpose, this utility model by the following technical solutions:
A kind of single-stage cone vacuum pump, the pump housing including inner hollow, it is connected to the transmission side pump cover of the transmission side of the described pump housing and the non-drive side pump cover of non-drive side, cross described transmission side pump cover and the axle of described non-drive side pump cover, described axle and described pump housing eccentric setting, the inside of the described pump housing has coaxial sleeve to be located at the transmission side cone described axle from transmission side to non-drive side successively eccentric setting, impeller and non-drive side cone, described impeller is fixing with described axle to be connected, the big end of described transmission side cone is fixing with described transmission side pump cover to be connected, cone match rotatable with described impeller after the transmission side end face of the small end described impeller of embedding, the big end of described non-drive side cone is fixing with described non-drive side pump cover to be connected, cone match rotatable with described impeller behind the non-drive side end face of the small end described impeller of embedding.
Wherein, described axle, described impeller, described transmission side cone, the described non-drive side equal eccentric setting of cone is in the bottom of the described pump housing.
Wherein, the top of described transmission side pump cover offers transmission side air inlet, bottom offers transmission side gas outlet, and the top of described non-drive side pump cover begins with non-drive side-inlet, bottom offers gas outlet, non-drive side；
At transmission side, gas enters described transmission side cone from described transmission side air inlet, enters the space circulation between described impeller and the described pump housing through described transmission side cone, then through described transmission side cone after enter described transmission side gas outlet and flow out；
In non-drive side, gas enters described non-drive side cone from described non-drive side-inlet, enters the space circulation between described impeller and the described pump housing through described non-drive side cone, then through described non-drive side cone after enter gas outlet, described non-drive side and flow out.
Wherein, described transmission side cone is that inside has independent upper plenum and the cone type structure of lower cavity, and upper side wall corresponding to the upper plenum of described transmission side cone offers transmission side cone gas outlet, the lower wall that the lower chamber of described transmission side cone is corresponding offers transmission side cone air inlet；
Described transmission side air inlet connects the upper plenum of described transmission side cone, and described transmission side gas outlet connects the lower cavity of described transmission side cone.
Wherein, the exit of the lower cavity of described transmission side cone is provided with transmission side baffle plate, and the inner side of described transmission side baffle plate is provided with small ball and big ball valve, and described small ball and described big ball valve are setting up and down.
Wherein, described non-drive side cone is that inside has independent upper plenum and the cone type structure of lower cavity, and upper side wall corresponding to the upper plenum of described non-drive side cone offers cone gas outlet, non-drive side, the lower wall that the lower chamber of described non-drive side cone is corresponding offers non-drive side cone air inlet；
Described non-drive side-inlet connects the upper plenum of described non-drive side cone, and gas outlet, described non-drive side connects the lower cavity of described non-drive side cone.
Wherein, the exit of the lower cavity of described non-drive side cone is provided with non-drive side shield, and the inner side of described non-drive side shield is provided with small ball and big ball valve, and described small ball and described big ball valve are setting up and down.
Wherein, strained by pull bar between described transmission side pump cover and described non-drive side pump cover.
Wherein, described transmission side pump cover, described non-drive side pump cover be equal and is provided with packing ring, filler and gland between described axle, described filler is between described packing ring and described gland, the described gland being positioned at transmission side is connected with described transmission side pump cover, and the described gland being positioned at non-drive side is connected with described non-drive side pump cover.
Wherein, the two ends of described axle respectively and are provided with bearing between described transmission side pump cover, described non-drive side pump cover, the arranged outside of the described bearing being positioned at transmission side has transmission side bearing end cover, and the arranged outside being positioned at the described bearing of non-drive side has non-drive side bearing enclosing cover；
Described axle is provided with retaining ring, and described retaining ring is between described bearing and described gland.
The beneficial effects of the utility model are:
Single-stage cone vacuum pump of the present utility model, axle, impeller, transmission side cone, non-drive side cone all with pump housing eccentric setting, in addition, transmission side cone, non-drive side cone all and between impeller by rotatable cone match, thus in wheel rotation process, transmission side cone and non-drive side cone are fixed, at this moment, adopt the cooperation of the conical surface, thus the big plane comparing the structure of flat round disc type coordinates, the cooperation of the conical surface is greatly reduced the diameter of sealing surface, not by the impact of pendular ring water, less scaling, while ensure that pump inlet high negative pressure, avoid the defect of fouling locking rotor, improve pump service life.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of single-stage cone vacuum pump of the present utility model.
Fig. 2 be single-stage cone vacuum pump in Fig. 1 A to structural representation.
Fig. 3 is the operation principle schematic diagram of the single-stage cone vacuum pump in Fig. 1.
In figure: 1 axle；The 2-pump housing；3-impeller；4-transmission side cone；5-non-drive side cone；6-transmission side pump cover；7-non-drive side pump cover；8-transmission side baffle plate；9-small ball；The big ball valve of 10-；The non-drive side shield of 11-；12-packing ring；13-filler；14-gland；15-retaining ring；16-bearing；17-transmission side bearing end cover；The non-drive side bearing enclosing cover of 18-；19-pull bar.
Detailed description of the invention
The technical solution of the utility model is further illustrated below in conjunction with accompanying drawing and by detailed description of the invention.
Such as Fig. 1, shown in Fig. 2, a kind of single-stage cone vacuum pump, the pump housing 2 including inner hollow, it is connected to the transmission side pump cover 6 of the transmission side of the pump housing 2 and the non-drive side pump cover 7 of non-drive side, cross transmission side pump cover 6 and the axle 1 of non-drive side pump cover 7, axle 1 and the pump housing 2 eccentric setting, the inside of the pump housing 2 has coaxial sleeve to be located at the transmission side cone 4 axle 1 from transmission side to non-drive side successively eccentric setting, impeller 3 and non-drive side cone 5, impeller 3 is fixing with axle 1 to be connected, the big end of transmission side cone 4 is fixing with transmission side pump cover 6 to be connected, cone match rotatable with impeller 3 after the transmission side end face of small end embedding impeller 3, the big end of non-drive side cone 5 is fixing with non-drive side pump cover 7 to be connected, cone match rotatable with impeller 3 behind the non-drive side end face of small end embedding impeller 3.
Single-stage cone vacuum pump of the present utility model, axle, impeller, transmission side cone, non-drive side cone all with pump housing eccentric setting, in addition, transmission side cone, non-drive side cone all and between impeller by rotatable cone match, thus in wheel rotation process, transmission side cone and non-drive side cone are fixed, at this moment, adopt the cooperation of the conical surface, thus the big plane comparing the structure of flat round disc type coordinates, the cooperation of the conical surface is greatly reduced the diameter of sealing surface, not by the impact of pendular ring water, less scaling, while ensure that pump inlet high negative pressure, avoid the defect of fouling locking rotor, improve pump service life.
Preferably, in the present embodiment, axle 1, impeller 3, transmission side cone 4, the equal eccentric setting of non-drive side cone 5 are in the bottom of the pump housing 2, the top of transmission side pump cover 6 offers transmission side air inlet, bottom offers transmission side gas outlet, and the top of non-drive side pump cover 7 begins with non-drive side-inlet, bottom offers gas outlet, non-drive side；
At transmission side, gas enters transmission side cone 4 from transmission side air inlet, enters the space circulation between impeller 3 and the pump housing 2 through transmission side cone 4, then through transmission side cone 4 after enter transmission side gas outlet and flow out；
In non-drive side, gas enters non-drive side cone 5 from non-drive side-inlet, enters the space circulation between impeller 3 and the pump housing 2 through non-drive side cone 5, then through non-drive side cone 5 after enter gas outlet, non-drive side and flow out.
Certainly, the transmission side air inlet of transmission side pump cover and transmission side gas outlet can be setting symmetrical above and below, it is also possible to arrange for direction, 90 ° of interval；The non-drive side-inlet of non-drive side pump cover and gas outlet, non-drive side can be setting symmetrical above and below, it is also possible to arrange for direction, 90 ° of interval.It is to say, transmission side air inlet is positioned at the vertical direction at top, and transmission side gas outlet can in the horizontal direction, and equally, non-drive side-inlet is positioned at the vertical direction at top, but not transmission side gas outlet can be in the horizontal direction.
In the present embodiment, impeller is eccentric in the bottom of the pump housing, gas outlet is in the bottom of the pump housing, so after gas is compressed, the direction of compression stress is from bottom to top, the deadweight of a part of impeller can be offset, so the power that axle bears is minimum, and can ensure that vacuum pump is bled negative pressure and rate of air sucked in required, reduce the amount of deflection of pump shaft, reduce the vibration of pump, improve the service life of bearing and the life-span of complete machine.
Specifically, transmission side cone 4 is that inside has independent upper plenum and the cone type structure of lower cavity, and upper side wall corresponding to the upper plenum of transmission side cone 4 offers transmission side cone gas outlet, the lower wall that the lower chamber of transmission side cone 4 is corresponding offers transmission side cone air inlet；
The upper plenum of transmission side air inlet connection transmission side cone 4, the lower cavity of transmission side gas outlet connection transmission side cone 4.
Specifically, non-drive side cone 5 is that inside has independent upper plenum and the cone type structure of lower cavity, and upper side wall corresponding to the upper plenum of non-drive side cone 5 offers cone gas outlet, non-drive side, the lower wall that the lower chamber of non-drive side cone 5 is corresponding offers non-drive side cone air inlet；
Non-drive side-inlet connects the upper plenum of non-drive side cone 5, and gas outlet, non-drive side connects the lower cavity of non-drive side cone 5.
As shown in Figure 3, when extracting, axle rotates, impeller rotates, feed the liquid in the pump housing to be subject to the effect of the centrifugal force that wheel rotation provides and be thrown toward the inwall of the pump housing, form a shape similar to the pump housing, thickness is close to equal circular pendular ring, moon shape space is formed between inner surface and the wheel hub of impeller of the liquid rotated with impeller, impeller end face and transmission side cone, gap between the cone of non-drive side is by liquid seal, when impeller rotates between 270 degree to 0 degree, the cavity volume surrounded between two adjacent blades is gradually increased, pressure reduces, gas is sucked by the external world, and when impeller rotates between 0 degree to 270 degree, the cavity volume surrounded between two adjacent blades is gradually reduced, pressure increases, gas is discharged.
Preferably, the exit of the lower cavity of transmission side cone 4 is provided with transmission side baffle plate 8, and the inner side of transmission side baffle plate 8 is provided with small ball 9 and big ball valve 10, and small ball 9 is setting up and down with big ball valve 10；The exit of the lower cavity of non-drive side cone 5 is provided with non-drive side shield 11, and the inner side of non-drive side shield 11 is provided with small ball 9 and big ball valve 10, and small ball 9 is setting up and down with big ball valve 10.Utilize transmission side baffle plate 8 can play the openings of sizes of outlet of the lower cavity blocking transmission side cone, and utilize big ball valve and small ball and the combined effect of transmission side baffle plate 8, such that it is able to realization is given vent to anger flexible and changeable, avoid overcompression phenomenon, reduce energy consumption, improve pumping efficiency, the purpose of reverse anti-gas-leak can be played again；Similarly, utilize non-drive side shield 11 can play the openings of sizes of outlet of the lower cavity blocking non-drive side cone, and utilize big ball valve and small ball and the combined effect of non-drive side shield 11, such that it is able to realization is given vent to anger flexible and changeable, avoid overcompression phenomenon, reduce energy consumption, improve pumping efficiency, the purpose of reverse anti-gas-leak can be played again.
In order to ensure that transmission side pump cover 6, non-drive side pump cover 7 realize better coordinating with the pump housing, strained by pull bar 19 between transmission side pump cover 6 and non-drive side pump cover 7.
And, transmission side pump cover 6, non-drive side pump cover 7 all and are provided with packing ring 12, filler 13 and gland 14 between axle 1, filler 13 is between packing ring 12 and gland 14, the gland 14 being positioned at transmission side is connected with transmission side pump cover 6, and the gland 14 being positioned at non-drive side is connected with non-drive side pump cover 7.Utilize packing ring and filler and gland to realize transmission side pump cover, non-drive side pump cover to realize sealing with axle respectively, it is to avoid leak gas or leak.
The two ends of axle 1 respectively and are provided with bearing 16 between transmission side pump cover 6, non-drive side pump cover 7, and the arranged outside of the bearing 16 being positioned at transmission side has transmission side bearing end cover 17, and the arranged outside being positioned at the bearing 16 of non-drive side has non-drive side bearing enclosing cover 18；Axle 1 is provided with retaining ring 15, and retaining ring 15 is between bearing 16 and gland 14.
Single-stage cone vacuum pump of the present utility model, it is adaptable to mine gas pump drainage engineering high negative pressure operating mode, it has the advantage that
A, maintain fine vacuum very capable, improve system vacuum
Unique cone dispenser designs, maintains the very capable of fine vacuum；Cone vacuum pump adopts special exhaust gas recirculation design, makes the gas from gas outlet backflow return to gas outlet through drainage channel, so that vacuum pump can reach higher end vacuum.Corresponding 15 DEG C of working solutions, the end vacuum of cone vacuum pump can arrive 13kpa, and the end vacuum of area vacuum pump is usually 16kpa, totally exceeds 3kPa.And the efficient district of this pump is interval at 13kpa～50kpa, the efficient district of flat disk vacuum pump is interval at 40kpa～70kpa, thus cone vacuum pump is more suitable at high negative pressure operating mode drawing-off gas.
B, the design of unique cone, rate of air sucked in required is big, and efficiency is high, reaches the purpose of energy-saving consumption-reducing
Unique cone design, it is very big that inlet, outlet can do, and gos deep into impeller, so that the passage that gas enters the pump housing is very unobstructed, decreases turnover atmidometer, so as in hgher efficiency；
And the air inlet of flat disk pump and gas outlet are at impeller end face opening, being subject to the formation of water ring and the upwards eccentric position restriction of impeller, its opening physical dimension can not be very big.
C, guarantee unit operation are stable, reduce regular maintenance expense and spare parts purchasing cost
(1), blade wheel structure more sturdy and durable, extend impeller service life
The impeller of cone vacuum pump is firmer.Flat disk pump is owing to air inlet and gas outlet are all on planar end, so each termination of impeller can only be opened wide, whole impeller less robust, because reasons in structure impeller mostly is welding type, and the parts of pump are more, and structure is more complicated；The air inlet of cone vacuum pump and gas outlet are designed in cone, and cone is goed deep in the pump housing, and whole impeller is once cast and formed, the whole reinforcing annular in termination of impeller so that blade wheel structure is very firm.This structure just, cone vacuum pump is highly resistant in water attack and working solution the destruction of the metal carried secretly.
(2), allotter enhanced fouling resistance strong, extend the service life of pump further
The flat disk easy fouling of distributor tip face of flat round disc type pump, reason is in that flat disk allotter area is bigger, the very easily ion in absorption water ring, flat disk allotter end face and impeller end clearance are less in addition, and the phenomenon being easily caused impeller and pump housing stall after fouling occurs；And cone type allotter embeds impeller internal ring, after vacuum pump forms pendular ring, allotter contacts with pendular ring hardly, so avoiding the generation of its fouling, the service life of whole pump is greatly improved, and also reduces the cost of later period maintenance.
(3), power suffered by cone vacuum pump shaft minimum, reduce bearing load, increase the service life
The upper end of the impeller deflection shell of flat disk pump, gas outlet is on the top of pump.When pumping turns, from top to bottom, the self gravitation that the power that namely axle bears is compression stress and impeller is added flat disk pump compression stress；The bottom of the impeller deflection shell of cone vacuum pump, gas outlet is in the bottom of pump, so after gas is compressed, the direction of compression stress is from bottom to top, can offsetting the deadweight of a part of impeller, so the power that axle bears is minimum, the life-span of axle is also long than the life-span of plane pump shaft.Meanwhile, this is also the life-span also corresponding longer reason of bearing of cone vacuum pump.
(4), the impeller end face of cone vacuum pump allows bigger abrasion space
Cone vacuum pump allows bigger abrasion, and when running for many years, impeller inevitably produces abrasion.Test shows, when impeller increases 0.0075 inch (0.2mm) with import gap, cone vacuum pump exhaust capacity only declines 2%, and flat disk pump to decline 5%.
(5), cone vacuum pump starting current little, extend motor service life
The impeller of flat disk pump is eccentrically mounted, and in the top of pump, time static, liquid level is higher, thus starting current is big.The impeller of cone vacuum pump is eccentrically mounted, and in the bottom of pump, time static, liquid level is relatively low, thus starting current is little, also extends motor service life while energy-conservation.
The economy that d, raising gas drainage system run
Cone vacuum pump is when high negative pressure, ensure that higher rate of air sucked in required, may be directly applied to the extraction of this coal-bed gas, improve coal mining efficiency, the mash gas concentration simultaneously directly extracted out is higher, may be directly applied to gas electricity, it is to avoid low concentration gas utilizes the difficult problem needing compression further, improves the economy of whole system.
Know-why of the present utility model is described above in association with specific embodiment.These describe and are intended merely to explanation principle of the present utility model, and can not be construed to the restriction to this utility model protection domain by any way.Based on explanation herein, those skilled in the art need not pay performing creative labour can associate other detailed description of the invention of the present utility model, and these modes fall within protection domain of the present utility model.
Claims (10)
- null1. a single-stage cone vacuum pump，The pump housing (2) including inner hollow，It is connected to the transmission side pump cover (6) of the transmission side of the described pump housing (2) and non-drive side pump cover (7) of non-drive side，Cross described transmission side pump cover (6) and the axle (1) of described non-drive side pump cover (7)，It is characterized in that，Described axle (1) and the described pump housing (2) eccentric setting，The inside of the described pump housing (2) has coaxial sleeve to be located at the transmission side cone (4) described axle (1) from transmission side to non-drive side successively eccentric setting、Impeller (3) and non-drive side cone (5)，Described impeller (3) is fixing with described axle (1) to be connected，The big end of described transmission side cone (4) is fixing with described transmission side pump cover (6) to be connected、Cone match rotatable with described impeller (3) after the transmission side end face of the small end described impeller of embedding (3)，The big end of described non-drive side cone (5) is fixing with described non-drive side pump cover (7) to be connected、Cone match rotatable with described impeller (3) behind the non-drive side end face of the small end described impeller of embedding (3).
- 2. single-stage cone vacuum pump according to claim 1, it is characterized in that, described axle (1), described impeller (3), described transmission side cone (4), described non-drive side cone (5) all eccentric settings are in the bottom of the described pump housing (2).
- 3. single-stage cone vacuum pump according to claim 2, it is characterized in that, the top of described transmission side pump cover (6) offers transmission side air inlet, bottom offers transmission side gas outlet, and the top of described non-drive side pump cover (7) begins with non-drive side-inlet, bottom offers gas outlet, non-drive side；At transmission side, gas enters described transmission side cone (4) from described transmission side air inlet, enters the space circulation between described impeller (3) and the described pump housing (2) through described transmission side cone (4), then through described transmission side cone (4) after enter the outflow of described transmission side gas outlet；In non-drive side, gas from described non-drive side-inlet enter described non-drive side cone (5), enter the space circulation between described impeller (3) and the described pump housing (2) through described non-drive side cone (5), then through described non-drive side cone (5) after enter gas outlet, described non-drive side outflow.
- 4. single-stage cone vacuum pump according to claim 3, it is characterized in that, described transmission side cone (4) has independent upper plenum and the cone type structure of lower cavity for inside, and upper side wall corresponding to the upper plenum of described transmission side cone (4) offers transmission side cone gas outlet, the lower wall that the lower chamber of described transmission side cone (4) is corresponding offers transmission side cone air inlet；Described transmission side air inlet connects the upper plenum of described transmission side cone (4), and described transmission side gas outlet connects the lower cavity of described transmission side cone (4).
- 5. single-stage cone vacuum pump according to claim 4, it is characterized in that, the exit of the lower cavity of described transmission side cone (4) is provided with transmission side baffle plate (8), the inner side of described transmission side baffle plate (8) is provided with small ball (9) and big ball valve (10), and described small ball (9) and described big ball valve (10) are for setting up and down.
- 6. single-stage cone vacuum pump according to claim 3, it is characterized in that, described non-drive side cone (5) has independent upper plenum and the cone type structure of lower cavity for inside, and upper side wall corresponding to the upper plenum of described non-drive side cone (5) offers cone gas outlet, non-drive side, the lower wall that the lower chamber of described non-drive side cone (5) is corresponding offers non-drive side cone air inlet；Described non-drive side-inlet connects the upper plenum of described non-drive side cone (5), and gas outlet, described non-drive side connects the lower cavity of described non-drive side cone (5).
- 7. single-stage cone vacuum pump according to claim 6, it is characterized in that, the exit of the lower cavity of described non-drive side cone (5) is provided with non-drive side shield (11), the inner side of described non-drive side shield (11) is provided with small ball (9) and big ball valve (10), and described small ball (9) and described big ball valve (10) are for setting up and down.
- 8. single-stage cone vacuum pump according to claim 1, it is characterised in that by pull bar (19) tension between described transmission side pump cover (6) and described non-drive side pump cover (7).
- 9. single-stage cone vacuum pump according to claim 1, it is characterized in that, described transmission side pump cover (6), described non-drive side pump cover (7) all and is provided with packing ring (12) between described axle (1), filler (13) and gland (14), described filler (13) is positioned between described packing ring (12) and described gland (14), the described gland (14) being positioned at transmission side is connected with described transmission side pump cover (6), the described gland (14) being positioned at non-drive side is connected with described non-drive side pump cover (7).
- 10. single-stage cone vacuum pump according to claim 9, it is characterized in that, the two ends of described axle (1) respectively and are provided with bearing (16) between described transmission side pump cover (6), described non-drive side pump cover (7), the arranged outside of the described bearing (16) being positioned at transmission side has transmission side bearing end cover (17), and the arranged outside being positioned at the described bearing (16) of non-drive side has non-drive side bearing enclosing cover (18)；Described axle (1) is provided with retaining ring (15), and described retaining ring (15) is positioned between described bearing (16) and described gland (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118374.XU CN205371022U (en) | 2015-12-29 | 2015-12-29 | Single -stage cone vacuum pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118374.XU CN205371022U (en) | 2015-12-29 | 2015-12-29 | Single -stage cone vacuum pump |
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| CN205371022U true CN205371022U (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485030A (en) * | 2015-12-29 | 2016-04-13 | 扬州长江水泵有限公司 | Single-level cone vacuum pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485030A (en) * | 2015-12-29 | 2016-04-13 | 扬州长江水泵有限公司 | Single-level cone vacuum pump |
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