CN1114019A - Fly ball screw shaft seal - Google Patents
Fly ball screw shaft seal Download PDFInfo
- Publication number
- CN1114019A CN1114019A CN 94111784 CN94111784A CN1114019A CN 1114019 A CN1114019 A CN 1114019A CN 94111784 CN94111784 CN 94111784 CN 94111784 A CN94111784 A CN 94111784A CN 1114019 A CN1114019 A CN 1114019A
- Authority
- CN
- China
- Prior art keywords
- shaft seal
- spiral
- axle envelope
- seal
- rotating ring
- 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.)
- Pending
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The shaft seal consists of spiral shaft sleeve, eccontric flyball riveted on the shaft sleeve and shaft seal movable ring putting on the shaft sleeve. When shutdown, the spring installed on the spiral shaft sleeve presses the shaft seal movable ring to the gland of the shaft seal static ring to implement the contact shaft seal. When powered on, the eccentric force of the flyball compresses the spring to make the movable ring and the gland of static ring decontact and the fluid kinetic shaft seal is implemented under the spiral suction action. The advantages are simple and impact structure, suitable for the standard shaft seal cavity of pump, reliable work and long service life.
Description
The present invention relates to pump, particularly the Sealing of pump.
So far, soft packing or mechanical seal are generally all adopted in the sealing of pump.Under the driving state, its contact friction wearing and tearing are big, especially even more serious when conveying has the fluid of burn into solid particle.Common mechanical sealing is work some months to a year at most, and the soft packing seal operating time is shorter.Frequent change sealing, the on-road efficiency of pump is brought adverse effect, increase maintenance workload and sealing cost.For example the patent No. is 86104524 " centrifugal sealing facilities for stalling ", is the method that is used with sub-propeller with centrifugal, has solved the sealing problem when contactless sealing is with parking when driving, but the essential Seal cage design that changes pump is difficult to promote the use of.The patent No. is " centrifugal seal " that 87100110 Australian Warman International Ltd come China's application, disclose centrifugal of a kind of usefulness sealing running clearance when driving is provided, realize the structure of contactless friction, and sealing problem when having solved parking, but the sealing problem during unresolved the driving, also need change the design of pump seal chamber, be difficult to equally apply.
At the deficiency of above technology, the invention provides a kind of fly ball screw shaft seal.This envelope is installed in the little envelope cavity of international standard ISO3069-1974 " axially sucking centrifugal pump-sealing of installation tool and gland sealed cavity size " and existing pump, realizes contactless screw fluid dynamic shaft seal when making pump automatically realize engagement shaft envelope and driving when stopping.Thereby making for a long time, the big problem of pump shaft envelope fretting wear is solved.
The present invention adopts following measure to realize.Fly ball screw shaft seal comprises centrifugal fly-weight, spiral, rotating ring, stationary ring, it is characterized in that: be provided with at least two spoon type centrifugal fly-weights, the axle sleeve of band spiral, axle envelope seal end plate, its flyball head falls in the little axle envelope cavity and is movably connected on the spiral sleeve, axle envelope rotating ring has fluting and overlaps the tension force effect that hangs on the spiral sleeve and be subjected to being installed in the spring on the spiral sleeve, and an axle envelope rotating ring is subjected to flyball centrifugal force and spring tension respectively.
The present invention compared with the prior art, its advantage is the axle sleeve that has adopted at least two spoon type centrifugal fly-weights and be with spiral, this envelope partly can be put into little shaft seal cavity, axle envelope seal end plate replaces the primitive axis sealed cover, can not change pump primitive axis envelope cavity size, use this envelope to redesign and revise former shaft seal cavity, have general application value; Since the screw fluid dynamic shaft seal when having taked to drive, contactless friction when having realized running, axle envelope long service life; The present invention is simple and compact for structure, reliable operation, manufacture cost are lower.
Below providing embodiment further specifies in conjunction with the accompanying drawings.
Accompanying drawing: fly ball screw shaft seal structure diagram.
The spiral sleeve 1 that is provided with multi-head spiral is used for replacing pump primitive axis envelope axle sleeve; Spoon type centrifugal fly-weight 2 is preferably four, is movably riveted on the spiral sleeve, and its head falls in the shaft seal cavity; Axle envelope rotating ring 4 has fluting, is injected with the polytetrafluoroethylene seal ring on it, and cover hangs on the spiral sleeve, and is subjected to the tension force of spring 3; Axle envelope seal end plate 5 is replaced pump primitive axis sealed cover; Guarantee the free gap of axle envelope rotating ring with stop screw 6 and hexagon thin nut 7.When stopping, press to an axle envelope seal end plate and realize the engagement shaft envelope automatically because the tension force effect of spring is sealed rotating ring with axle.When driving and after reaching desired speed, axle envelope rotating ring disengages with axle envelope seal end plate at spoon type centrifugal fly-weight action of centrifugal force lower compression spring, and under the spiral pumping action, realizes the contactless axle envelope of fluid dynamic.
Claims (3)
1, fly ball screw shaft seal comprises centrifugal fly-weight, spiral, rotating ring, stationary ring, it is characterized in that: be provided with at least two spoon type centrifugal fly-weights, the axle sleeve of band spiral, axle envelope seal end plate, its flyball head falls in the little axle envelope cavity and be movably connected on the spiral sleeve, axle envelope rotating ring has fluting and overlaps the tension force effect that hangs on the spiral sleeve and be subjected to being installed in the spring on the spiral sleeve, and an axle envelope rotating ring is subjected to flyball centrifugal force and spring tension respectively.
2, it is characterized in that according to the described fly ball screw shaft seal of claim 1: be injected with seal ring on the axle envelope rotating ring.
3, it is characterized in that according to the described fly ball screw shaft seal of claim 1: the stop screw that the band nut is installed on axle envelope rotating ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111784 CN1114019A (en) | 1994-06-08 | 1994-06-08 | Fly ball screw shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94111784 CN1114019A (en) | 1994-06-08 | 1994-06-08 | Fly ball screw shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1114019A true CN1114019A (en) | 1995-12-27 |
Family
ID=5035618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94111784 Pending CN1114019A (en) | 1994-06-08 | 1994-06-08 | Fly ball screw shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1114019A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094973A (en) * | 2009-12-11 | 2011-06-15 | 天津市新宇彩板有限公司 | Adjustable pressure type seal structure |
| CN103090011A (en) * | 2012-07-06 | 2013-05-08 | 马卫东 | Liquid sealing device and sealing liquid |
-
1994
- 1994-06-08 CN CN 94111784 patent/CN1114019A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094973A (en) * | 2009-12-11 | 2011-06-15 | 天津市新宇彩板有限公司 | Adjustable pressure type seal structure |
| CN103090011A (en) * | 2012-07-06 | 2013-05-08 | 马卫东 | Liquid sealing device and sealing liquid |
| CN103090011B (en) * | 2012-07-06 | 2015-04-29 | 辽阳泵业密封有限公司 | Liquid sealing device and sealing liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1114019A (en) | Fly ball screw shaft seal | |
| CN2218269Y (en) | Flying hammer screw shaft gland | |
| CN2345518Y (en) | Concrete pump conveying cylinder piston sealing device | |
| CN2575377Y (en) | Automatic regulating temperature valve for warming | |
| CN101463902A (en) | Mechanical seal stationary ring and rotating ring, and double-end mechanical seal composed of the same | |
| CN2305503Y (en) | Automatic diameter-adjusting piston for petroleum drilling mud pump | |
| CN2277466Y (en) | Centrifugal on-off screw seal | |
| CN216157845U (en) | Piston connecting rod of oil-free air compressor | |
| CN2199374Y (en) | Self-sealed plunger packing seal for reciprocating pump | |
| CN2238334Y (en) | Liquid ring opening type sealing device | |
| CN218598682U (en) | Hydraulic brake structure integrating oil seal and braking functions | |
| CN216199031U (en) | Mechanical seal structure for integrated double-end-face centrifugal slurry pump | |
| CN213839107U (en) | Dynamic sealing structure of sealed bin body | |
| CN2123369U (en) | Colloidal mill | |
| CN211144736U (en) | Two-phase flow type energy-saving air compressor | |
| CN220302398U (en) | Self-screwing type packing sealing structure | |
| CN85200362U (en) | Biconical piston and installation tool | |
| CN2237756Y (en) | Quickly-mountable mechanical sealing | |
| CN212768572U (en) | Pulverized coal metering pump | |
| CN217233727U (en) | Air compressor and vehicle | |
| CN2292188Y (en) | metal sealer | |
| CN2825932Y (en) | Polish rod-free transverse transmission sealing device for pumping well | |
| CN2455978Y (en) | Top assembled and closed ball valve with adjustable pressure | |
| CN2675906Y (en) | Non-leakage gear pump | |
| CN2149523Y (en) | Sealing apparatus for power stop use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |