CN108302035A - A kind of packaging machinery sealing elastomer Quimby pump - Google Patents
A kind of packaging machinery sealing elastomer Quimby pump Download PDFInfo
- Publication number
- CN108302035A CN108302035A CN201711381442.5A CN201711381442A CN108302035A CN 108302035 A CN108302035 A CN 108302035A CN 201711381442 A CN201711381442 A CN 201711381442A CN 108302035 A CN108302035 A CN 108302035A
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- China
- Prior art keywords
- circular arc
- cycloid
- helical blade
- oil inlet
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a kind of packaging machinery sealing elastomer Quimby pumps, including casing, sealing device, block, stationary ring, positioning pin, oil inlet elongated slot and oil inlet screw thread, the casing internal is provided with machine driving chamber and liquid conveyor chamber, the first transmission shaft and second driving shaft one end that machine driving chamber is internally provided with extend in liquid conveyor chamber, first transmission shaft and second driving shaft one end are respectively arranged with helical blade, the helical blade on helical blade and second driving shaft on first transmission shaft mutually agrees with, it is respectively arranged with sealing device in the middle part of first transmission shaft and second driving shaft, it is provided with inlet and liquid outlet on the side wall of liquid conveyor chamber；The configuration of the present invention is simple, easy to use, sealing and high lubricating effect can be widely popularized and be applied.
Description
【Technical field】
The present invention relates to the technical fields of screw pump, the especially technical field of screw rod pump mechanical sealing.
【Background technology】
Currently, the mechanical seal that Quimby pump is carried out in operating condition there is a problem of it is very much.In seal process, sealing
Effect often by the lubrication portion of transmission case with there is the part of impurity to be separated to come, sealing effect is bad to cause impurity
It can enter in fluid, lubricating component accelerated wear test occurs；Secondly, lubrication portion in the process of running, usually can be because of abrasion
And particle is generated, and if lubricating oil does not flow, it will cause being lubricated again to lubrication portion containing more polymictic oil,
The rate of wear can equally be accelerated；These all seriously affect the effect of mechanical seal, accelerate the rate of wear of equipment, shorten equipment
Service life, for this reason, it is necessary to be improved design to mechanical seal；In current Quimby pump rotation process, there is also spiral shells
Vane piece Profile Design is unreasonable, and abrasion is very fast so that Quimby pump service life is short.
【Invention content】
The purpose of the present invention is exactly to solve the problems of the prior art, proposes a kind of packaging machinery sealing elastomer twin-screw
Pump can separate impurity very well, reduce abrasion, and lubricating oil flowing reduces the case where lubricating oil Impurity Distribution is concentrated, optimization
Helical blade molded line adds wearing layer on helical blade, extends the service life of Quimby pump.
To achieve the above object, the present invention proposes a kind of packaging machinery sealing elastomer Quimby pump, including casing, close
Seal apparatus, block, stationary ring, positioning pin, oil inlet elongated slot and oil inlet screw thread, the casing internal are provided with machine driving chamber and liquid
Conveyor chamber, the first transmission shaft and second driving shaft one end that machine driving chamber is internally provided with extend in liquid conveyor chamber, the
One transmission shaft and second driving shaft one end are respectively arranged with the first helical blade and the second helical blade, and on the first transmission shaft
One helical blade mutually agrees with the second helical blade on second driving shaft, in the middle part of the first transmission shaft and second driving shaft respectively
It is provided with sealing device, inlet and liquid outlet are provided on the side wall of liquid conveyor chamber；
It is arranged fluted on the rotating seat of the sealing device, the front end of rotating seat is provided with Yan Shengtao, prolongs raw put on and sets
Several fuel feed holes are equipped with, prolongs raw set front end and is provided with chuck rank；Rotating ring is provided on the rotating seat, the card of rotating ring lacks and groove
Between be provided with anti-rotation pin, be provided with dust-proof screw thread on the external cylindrical surface of rotating seat, the gear of block, which lacks, blocks stationary seat, stationary ring
It is provided with drag ring between the side that the short slot and gear of seat lack；Described prolong is provided with stationary ring, stationary ring and stationary ring on the outside of raw set
By positioning pin connection between seat, several oil inlet elongated slots are provided on the inside of stationary ring, the height of oil inlet elongated slot is more than the height of chuck rank
Degree；Be provided with oil inlet screw thread on first transmission shaft and second driving shaft, prolong between raw set inside and oil inlet screw thread there are
Gap.
Preferably, the molded line of first helical blade by cycloid AB, cycloid BC, circular arc C D, circular arc DE, circular arc EF,
Circular arc FG and circular arc HA compositions, the molded line of second helical blade is by cycloid A ' B ', cycloid B ' C ', circular arc C ' D ', circular arc D '
E ', circular arc E ' F ', circular arc F ' G ' and circular arc H ' A ' compositions, cycloid AB and circular arc E ' F ' conjugation, cycloid BC and circular arc D ' E ' conjugation,
Circular arc C D is the tangent arc of cycloid BC and circular arc DE, arc length 1.5-3.5mm, circular arc DE and cycloid B ' C ' conjugation, circular arc EF
With cycloid A ' B ' conjugation, circular arc FG and circular arc H ' A ' conjugation, circular arc HA and circular arc F ' G ' conjugation, circular arc C ' D ' be cycloid B ' C ' with
The tangent arc of circular arc C ' D ', arc length 1.5-3.5mm.
Preferably, being both provided between first helical blade and the second helical blade and liquid conveying chamber inner sidewall
Wearing layer.
Preferably, being provided with rubber layer on the outside of first helical blade and the second helical blade.
Preferably, the hand of spiral of the dust-proof screw thread is opposite with the transmission rotational axis direction inside rotating seat；It is described
The hand of spiral of oil inlet screw thread is identical as the transmission rotational axis direction inside rotating seat.
Beneficial effects of the present invention：The present invention by being provided with dust-proof screw thread on the external cylindrical surface by rotating seat, block
Gear lacks and blocks stationary seat, is provided with drag ring between a scarce side of the short slot and gear of stationary seat, drag ring always with it is dust-proof
Thread contact, when rotating seat rotates, the impurity rotation that dust-proof screw thread will go into dust-proof screw thread and drag ring contact site returns
To liquid conveyor chamber；When transmission shaft inside rotating seat rotates, the fluid inside oil pocket enters Yan Shengtao by oil inlet screw thread
It at the gap of transmission shaft, is then entered inside oil inlet elongated slot by fuel feed hole, rotating ring and stationary ring contact portion is moistened
It is sliding, it is finally flow back into oil pocket by the gap of oil inlet elongated slot end and chuck rank again, to prevent lubricating oil part impurity from containing
It measures excessively high；First helical blade and the second helical blade are designed using optimized model line so that sealing effect is good, and wearability is good, makes
Use long lifespan；The configuration of the present invention is simple, easy to use, sealing and high lubricating effect can be widely popularized and be applied.
The feature and advantage of the present invention will be described in detail by embodiment combination attached drawing.
【Description of the drawings】
Fig. 1 is a kind of main view diagrammatic cross-section of packaging machinery sealing elastomer Quimby pump of the present invention；
Fig. 2 is a kind of main view section partial schematic diagram of packaging machinery sealing elastomer Quimby pump of the present invention；
Fig. 3 is the present invention a kind of the first helical blade and the second helical blade of packaging machinery sealing elastomer Quimby pump
Section molded line schematic diagram.
In figure：1- casings, 2- machine drivings chamber, 3- liquid conveyor chamber, the first transmission shafts of 4-, 5- second driving shafts, 6-
One helical blade, the second helical blades of 62-, 7- wearing layers, 8- sealing devices, 9- inlets, 10- liquid outlets, 11- rotating seats,
12- grooves, 13- prolong that raw set, 14- fuel feed holes, 15- chuck rank, 16- rotating rings, 17- cards be scarce, 18- anti-rotation pins, the dust-proof spiral shells of 19-
Line, 20- blocks, 21- gear lack, 22- stationary seats, 23- short slots, 24- drag rings, 25- stationary rings, 26- positioning pins, 27- oil inlets elongated slot,
28- oil inlets screw thread, 29- cycloid AB, 30- cycloid BC, 31- circular arc C D, 32- circular arc DE, 33- circular arc EF, 34- circular arcs FG, 35- circle
Arc HA, 36- cycloid A ' B ', 37- cycloid B ' C ', 38- circular arc Cs ' D ', 39- circular arc D ' E ', 40- circular arc E ' F ', 41- circular arc F ' G ',
42- circular arc H ' A '.
【Specific implementation mode】
- Fig. 3 refering to fig. 1, a kind of packaging machinery sealing elastomer Quimby pump of the present invention, including casing 1, sealing device 8,
Block 20, stationary ring 25, positioning pin 26, oil inlet elongated slot 27 and oil inlet screw thread 28, the casing 1 are internally provided with machine driving chamber 2
It is defeated that the first transmission shaft 4 and 5 one end of second driving shaft being internally provided with liquid conveyor chamber 3, machine driving chamber 2 extend to liquid
It sending in chamber 3, the first transmission shaft 4 and 5 one end of second driving shaft are respectively arranged with the first helical blade 6 and the second helical blade 62,
The first helical blade 6 on first transmission shaft 4 mutually agrees with the second helical blade 62 on second driving shaft 5, the first transmission
Axis 4 and 5 middle part of second driving shaft are respectively arranged with sealing device 8, and inlet 9 is provided on the side wall of liquid conveyor chamber 3 and is gone out
Liquid mouth 10；Fluted 12 are arranged on the rotating seat 11 of the sealing device 8, the front end of rotating seat 11, which is provided with, prolongs raw set 13, prolongs
Several fuel feed holes 14 are provided on raw set 13, prolongs 13 front ends of raw set and is provided with chuck rank 15；It is provided on the rotating seat 11 dynamic
Ring 16, the card of rotating ring 16, which lacks, is provided with anti-rotation pin 18 between 17 and groove 12, be provided on the external cylindrical surface of rotating seat 11 anti-
Dirt screw thread 19, the gear of block 20 lack 21 and block stationary seat 22, set between the short slot 23 and a side of gear scarce 21 of stationary seat 22
It is equipped with drag ring 24；13 outside of raw set of prolonging is provided with stationary ring 25, is connected by positioning pin 26 between stationary ring 25 and stationary seat 22
It connects, 25 inside of stationary ring is provided with several oil inlet elongated slots 27, and the height of oil inlet elongated slot 27 is more than the height of chuck rank 15；Described first
It is provided with oil inlet screw thread 28 on transmission shaft 4 and second driving shaft 5, prolongs between 13 inside of raw set and oil inlet screw thread 28 that there are gaps；
The molded line of first helical blade 6 is by cycloid AB29, cycloid BC30, circular arc C D31, circular arc DE32, circular arc EF33, circular arc
FG34 and circular arc HA35 compositions, the molded line of second helical blade 62 is by cycloid A ' B ' 36, cycloid B ' C ' 37, circular arc C ' D '
38, circular arc D ' E ' 39, circular arc E ' F ' 40, circular arc F ' G ' 41 and circular arc H ' A ' 42 are formed, and cycloid AB29 and circular arc E ' F ' 40 are conjugated,
Cycloid BC30 and circular arc D ' E ' 39 are conjugated, and circular arc C D31 is the tangent arc of cycloid BC30 and circular arc DE32, arc length 1.5-
3.5mm, circular arc DE32 and cycloid B ' C ' 37 are conjugated, and circular arc EF33 and cycloid A ' B ' 36 are conjugated, circular arc FG34 and circular arc H ' A ' 42
Conjugation, circular arc HA35 and circular arc F ' G ' 41 are conjugated, and circular arc C ' D ' 38 is the tangent arc of cycloid B ' C ' 37 and circular arc C ' D ' 38, arc
A length of 1.5-3.5mm；It is provided with wearing layer 7 between 3 madial wall of the helical blade 6 and liquid conveyor chamber；First spiral
Blade 6 and 62 outside of the second helical blade are provided with rubber layer；Inside the hand of spiral and rotating seat 11 of the dust-proof screw thread 19
Transmission rotational axis direction it is opposite；The hand of spiral of the oil inlet screw thread 28 and the transmission rotational axis direction phase inside rotating seat 11
Together.
The course of work of the present invention：
A kind of packaging machinery sealing elastomer Quimby pump of the present invention during the work time, by inlet 9 and input duct
It is connected, liquid outlet 10 is connected with outlet pipe, starts the pump housing, and machine driving chamber 2 is so that the transmission of the first transmission shaft 4 and second
Axis 5 rotates, and liquid is transported to liquid outlet 10 by the first helical blade 6 and 62 engagement rotation of the second helical blade by inlet 9
Discharge, in 5 rotation process of the first transmission shaft 4 and second driving shaft, the liquid impurity that inlet 9 enters can enter drag ring
24 rotate back to impurity in liquid conveyor chamber 3 with 19 contact position of dust-proof screw thread, the rotation of rotating seat 11, and the fluid inside oil pocket is logical
Oil inlet screw thread 28 is crossed to raw set 13 is prolonged at the gap of transmission shaft, is then entered inside oil inlet elongated slot 27 by fuel feed hole 14,
Rotating ring 16 and 25 contact portion of stationary ring are lubricated, finally flowed back to again by 27 end of oil inlet elongated slot and the gap of chuck rank 15
Into oil pocket, to prevent lubricating oil part impurity content excessively high
The present invention by will be provided with dust-proof screw thread 19 on the external cylindrical surface of rotating seat 11, the gear of block 20 lack 21 block it is quiet
Ring seat 22, the short slot 23 of stationary seat 22 and gear, which lack, is provided with drag ring 24 between 21 side, drag ring 24 always with it is anti-
Dirt screw thread 19 contacts, and when rotating seat 11 rotates, dust-proof screw thread 19 will go into dust-proof screw thread 19 and 24 contact site of drag ring
Impurity rotation returns to liquid conveyor chamber 3；When transmission shaft rotation inside rotating seat 11, fluid inside oil pocket is by into whelk
Line 28, which enters, prolongs raw set 13 at the gap of transmission shaft, is then entered inside oil inlet elongated slot 27 by fuel feed hole 14, to dynamic
Ring 16 is lubricated with 25 contact portion of stationary ring, finally flow back into oil by the gap of 27 end of oil inlet elongated slot and chuck rank 15 again
Intracavitary, to prevent lubricating oil part impurity content excessively high；First helical blade 6 and the second helical blade 62 use optimized model line
Design so that sealing effect is good, and wearability is good, and service life is long；The configuration of the present invention is simple, easy to use, sealing and lubrication effect
Fruit is good, can be widely popularized and be applied.
Above-described embodiment is the description of the invention, is not limitation of the invention, it is any to simple transformation of the present invention after
Scheme all belong to the scope of protection of the present invention.
Claims (5)
1. a kind of packaging machinery sealing elastomer Quimby pump, it is characterised in that：Including casing (1), sealing device (8), block
(20), stationary ring (25), positioning pin (26), oil inlet elongated slot (27) and oil inlet screw thread (28), the casing (1) are internally provided with machinery
Drive cavity (2) and liquid conveyor chamber (3), the first transmission shaft (4) and second driving shaft that machine driving chamber (2) is internally provided with
(5) one end extends in liquid conveyor chamber (3), and the first transmission shaft (4) and second driving shaft (5) one end are respectively arranged with the first spiral shell
Vane piece (6) and the second helical blade (62), the first helical blade (6) on the first transmission shaft (4) on second driving shaft (5)
The second helical blade (62) mutually agree with, be respectively arranged with sealing device in the middle part of the first transmission shaft (4) and second driving shaft (5)
(8), inlet (9) and liquid outlet (10) are provided on the side wall of liquid conveyor chamber (3)；
It is arranged fluted (12) on the rotating seat (11) of the sealing device (8), the front end of rotating seat (11) is provided with Yan Shengtao
(13), several fuel feed holes (14) are provided on Yan Shengtao (13), Yan Shengtao (13) front end is provided with chuck rank (15)；The rotating ring
Rotating ring (16) is provided on seat (11), the card of rotating ring (16), which lacks, is provided with anti-rotation pin (18) between (17) and groove (12), move
Dust-proof screw thread (19) is provided on the external cylindrical surface of ring seat (11), the gear of block (20) lacks (21) and blocks stationary seat (22), stationary ring
It is provided with drag ring (24) between the short slot (23) and a side of gear scarce (21) of seat (22)；Described prolong sets on the outside of raw set (13)
It is equipped with stationary ring (25), is connect by positioning pin (26) between stationary ring (25) and stationary seat (22), stationary ring (25) is if inside is provided with
Dry oil inlet elongated slot (27), the height of oil inlet elongated slot (27) are more than the height of chuck rank (15)；First transmission shaft (4) and second
Oil inlet screw thread (28) is provided on transmission shaft (5), there are gaps between the insides Yan Shengtao (13) and oil inlet screw thread (28).
2. a kind of packaging machinery sealing elastomer Quimby pump as described in claim 1, it is characterised in that：First spiral
The molded line of blade (6) is by cycloid AB (29), cycloid BC (30), circular arc C D (31), circular arc DE (32), circular arc EF (33), circular arc FG
(34) it is formed with circular arc HA (35), the molded line of second helical blade (62) is by cycloid A ' B ' (36), cycloid B ' C ' (37), circle
Arc C ' D ' (38), circular arc D ' E ' (39), circular arc E ' F ' (40), circular arc F ' G ' (41) and circular arc H ' A ' (42) compositions, cycloid AB
(29) be conjugated with circular arc E ' F ' (40), cycloid BC (30) and circular arc D ' E ' (39) are conjugated, circular arc C D (31) be cycloid BC (30) with
The tangent arc of circular arc DE (32), arc length 1.5-3.5mm, circular arc DE (32) are conjugated with cycloid B ' C ' (37), circular arc EF (33)
It being conjugated with cycloid A ' B ' (36), circular arc FG (34) and circular arc H ' A ' (42) are conjugated, and circular arc HA (35) and circular arc F ' G ' (41) are conjugated,
Circular arc C ' D ' (38) is the tangent arc of cycloid B ' C ' (37) and circular arc C ' D ' (38), arc length 1.5-3.5mm.
3. a kind of packaging machinery sealing elastomer Quimby pump as described in claim 1, it is characterised in that：First spiral
It is both provided with wearing layer (7) between blade (6) and the second helical blade (62) and liquid conveyor chamber (3) madial wall.
4. a kind of packaging machinery sealing elastomer Quimby pump as described in claim 1, it is characterised in that：First spiral
It is provided with rubber layer on the outside of blade (6) and the second helical blade (62).
5. a kind of packaging machinery sealing elastomer Quimby pump as described in claim 1, it is characterised in that：The dust-proof screw thread
(19) the hand of spiral is opposite with the transmission rotational axis direction that rotating seat (11) is internal；The hand of spiral of the oil inlet screw thread (28)
It is identical as the transmission rotational axis direction that rotating seat (11) is internal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711381442.5A CN108302035B (en) | 2017-12-20 | 2017-12-20 | Packaging mechanical seal elastomer double-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711381442.5A CN108302035B (en) | 2017-12-20 | 2017-12-20 | Packaging mechanical seal elastomer double-screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108302035A true CN108302035A (en) | 2018-07-20 |
| CN108302035B CN108302035B (en) | 2023-04-21 |
Family
ID=62870428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711381442.5A Active CN108302035B (en) | 2017-12-20 | 2017-12-20 | Packaging mechanical seal elastomer double-screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108302035B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885370A (en) * | 1981-11-17 | 1983-05-21 | Sumitomo Eaton Kiki Kk | Brake system for hydraulic motor |
| CN2298389Y (en) * | 1997-05-09 | 1998-11-25 | 自贡机械密封件厂 | Machinery sealing device with anti-block and abrasion resistant |
| CN201368201Y (en) * | 2009-03-24 | 2009-12-23 | 宁波东联密封件有限公司 | Self-balance type mechanical sealing device |
| CN201723255U (en) * | 2010-07-09 | 2011-01-26 | 江西华电电力有限责任公司 | Assembled mechanical seal structure of screw rod expansion power machine |
| CN102155541A (en) * | 2011-04-15 | 2011-08-17 | 丹东克隆集团有限责任公司 | Mechanical seal device for compact corrugated pipe |
| CN204553832U (en) * | 2015-02-04 | 2015-08-12 | 江苏省宜兴非金属化工机械厂有限公司 | Double-face mechanical sealing structure |
| CN106286291A (en) * | 2016-10-21 | 2017-01-04 | 宁波邦威泵业有限公司 | Impeller pump shaft sealer |
| CN207583623U (en) * | 2017-12-20 | 2018-07-06 | 杭州电子科技大学 | A kind of packaging machinery sealing elastomer Quimby pump |
-
2017
- 2017-12-20 CN CN201711381442.5A patent/CN108302035B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885370A (en) * | 1981-11-17 | 1983-05-21 | Sumitomo Eaton Kiki Kk | Brake system for hydraulic motor |
| CN2298389Y (en) * | 1997-05-09 | 1998-11-25 | 自贡机械密封件厂 | Machinery sealing device with anti-block and abrasion resistant |
| CN201368201Y (en) * | 2009-03-24 | 2009-12-23 | 宁波东联密封件有限公司 | Self-balance type mechanical sealing device |
| CN201723255U (en) * | 2010-07-09 | 2011-01-26 | 江西华电电力有限责任公司 | Assembled mechanical seal structure of screw rod expansion power machine |
| CN102155541A (en) * | 2011-04-15 | 2011-08-17 | 丹东克隆集团有限责任公司 | Mechanical seal device for compact corrugated pipe |
| CN204553832U (en) * | 2015-02-04 | 2015-08-12 | 江苏省宜兴非金属化工机械厂有限公司 | Double-face mechanical sealing structure |
| CN106286291A (en) * | 2016-10-21 | 2017-01-04 | 宁波邦威泵业有限公司 | Impeller pump shaft sealer |
| CN207583623U (en) * | 2017-12-20 | 2018-07-06 | 杭州电子科技大学 | A kind of packaging machinery sealing elastomer Quimby pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108302035B (en) | 2023-04-21 |
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