CN103821729A - Cavity lock type zero leakage shaft seal slurry pump - Google Patents
Cavity lock type zero leakage shaft seal slurry pump Download PDFInfo
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- CN103821729A CN103821729A CN201410080692.5A CN201410080692A CN103821729A CN 103821729 A CN103821729 A CN 103821729A CN 201410080692 A CN201410080692 A CN 201410080692A CN 103821729 A CN103821729 A CN 103821729A
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Abstract
The invention discloses a cavity lock type zero leakage shaft seal slurry pump, which comprises a pump body, a support frame, a pump shaft and a cavity lock type zero leakage shaft seal mechanism, wherein the front end of the pump shaft is provided with an impeller, the cavity lock type zero leakage shaft seal mechanism comprises a cavity lock type shaft seal box, a cavity lock press cover, a cavity lock shaft sleeve, a moving ring tight pushing ring, a cavity lock sub press cover, a moving ring and a stationary ring, the cavity lock type shaft seal box is arranged at the front side of the pump body, the cavity lock press cover is arranged at the front side of the cavity lock type shaft seal box, the cavity lock shaft sleeve is positioned inside the cavity lock press cover and the cavity lock type shaft seal box and is sheathed on the pump shaft, the moving ring tight pushing ring, the cavity lock sub press cover the moving ring and the stationary ring are positioned between the cavity lock press cover and the cavity lock shaft sleeve, filling materials and a water seal ring are respectively arranged behind the stationary ring and between the inner wall of the cavity lock type shaft seal box and the cavity lock shaft sleeve, a reverse axial force positioning impeller is arranged on the pump shaft and between the cavity lock type shaft seal box and the impeller, and tongue-shaped blades with the facing direction opposite to the direction of blade arranged on the impeller are arranged on a wheel disc of the reverse axial force positioning impeller. The cavity lock type zero leakage shaft seal slurry pump has the advantages that the structure is reasonable and reliable, the combined sealing is adopted, the advantages of both fillinf material sealing and mechanical sealing are considered and combined, and the sealing performance is more excellent.
Description
Technical field
The present invention relates to the shaft seal structure field of slag stock pump, specifically a kind of chamber locking-type zero leakage shaft seal slag stock pump.
Background technique
Slag stock pump belongs to centrifugal pump from working principle, refers in concept the one machinery by make solid, liquid mixed medium energy increase by the effect of centrifugal force (rotation of the impeller of pump), converts electric energy to the kinetic energy of medium and the equipment of potential energy.Generally carry the pump that contains suspended solids in liquid (water) to be called slag stock pump by being applicable to.One of indispensable equipment in ore dressing, the each technological process of coal preparation plant at present.
In prior art, the shaft seal structure of slag stock pump mainly contains two kinds, i.e. packing seal and mechanical seal.Gland sealed is simple in structure, manufacture, install, maintenance all more convenient, therefore application comparatively general.The packing seal of slag stock pump is the wherein packing seal with lining water-cooled, wherein, the material of main part of Stuffing box has two kinds of carbon steel and stainless steels, and the Specifeca tion speeification of Stuffing box has pressure rating (two kinds of 0.6MPa and 1.6MPa) and the nominal diameter of axle (DN series be 30,40/50/60/70/80/90/100/110/120/130/140 and 160 etc.).Packing seal is by filler casing, filler, gland, the basic part such as bolt forms, and is placed in filler between casing and rotating shaft under the axial compression of bolt force and gland, produces radially and extends, make filler be close to the surrounding of rotating shaft, the lubricant oil adding from lubricating cup can make to form one deck oil film as thin as a wafer between the surface of contact of filler and rotating shaft in the time that axle rotates, and has both had lubrication, can stop again escaping and the infiltration of the outer gas of pump chamber of medium in pump chamber.Gland sealed major advantage is cheapness, installs simply.For example, but its shortcoming has a lot: leakage rate is large, leakage pollutes, damages chamber shaft locking sleeve, working life is short, power loss is large, power consumption etc.
Mechanical seal is in the large operating mode situation of rotor part shifting amount; therefore dynamic and static ring in mechanical seal often damages; once damaged; compacting part direct friction; sintering, the locking causing makes maintain and replace become very difficulty; even often can cause complete machine paralysis, the major accident that production line pauses.
In prior art, in order to play positioning action in coordinating with impeller, when being screwed, impeller and pump shaft be fixed on the position setting, generally on pump shaft, between axle sleeve and impeller, setting sleeve is installed, impeller just in time equates with the distance of front and back backplate in pump chamber like this, gap is identical, to prevent generation friction between flow passage components.
But in slag stock pump, mainly by liquid effects, the gravity of the difference force on impeller and whole rotating part forms axial force, the action direction of these two power is identical, and making a concerted effort is to be added and to be formed by two power.Can find out, in the identical situation of performance parameter, the axial force of slag stock pump is larger than general horizontal pump, and balance difficulty is than vertical pump difficulty.So in running, bearing easily damages, its reason is also to have very large relation with axial force.
Summary of the invention
The object of this invention is to provide a kind of chamber locking-type zero leakage shaft seal slag stock pump, for combined sealed, the length of double advantage of getting packing seal and mechanical seal, makes sealability more superior; Meanwhile, adopt anti-axial force location impeller to replace setting sleeve, except playing the positioning action identical with setting sleeve, can also play the effect that reduces axial force, thereby extend the working life of bearing.
Technological scheme of the present invention is as follows:
A kind of chamber locking-type zero leakage shaft seal slag stock pump, it is characterized in that: include the pump housing, be arranged on the support of pump housing front side and rotate rack-mount pump shaft and chamber locking-type zero leakage shaft seal mechanism by bearing, the front end of described pump shaft extends in the inner chamber of the pump housing, and the front end of pump shaft is provided with impeller, described chamber locking-type zero leakage shaft seal mechanism includes the chamber locking-type shaft seal case that is installed on pump housing front side, be installed on the chamber lock gland of locking-type shaft seal case front side, chamber, lock the inside of gland and chamber locking-type shaft seal case in chamber and be sleeved on the chamber shaft locking sleeve on pump shaft and the rotating ring push-tight ring between chamber lock gland and chamber shaft locking sleeve, secondary gland is locked in chamber, rotating ring and stationary ring, on the front end outer wall of described chamber shaft locking sleeve, there is annular projection, the bottom of described rotating ring push-tight ring has uncovered forward annular cavity, in described annular cavity, be respectively equipped with multiple springs, one end of described multiple springs leans respectively on the rear side outer wall of described annular projection, the other end of multiple springs leans respectively on the bottom surface of described annular cavity, described chamber is locked secondary gland ring around the outside of described rotating ring push-tight ring and rotating ring push-tight ring is locked on the end face of described annular projection, described rotating ring is fixed on the outer wall of chamber shaft locking sleeve, the front end of rotating ring leans the rear end at described rotating ring push-tight ring, described stationary ring be fixed on the inwall of described chamber lock gland and and described chamber shaft locking sleeve between there is gap, between described rotating ring and stationary ring, be sealed and matched for contactless dynamic pressure type, between the inwall of described chamber locking-type shaft seal case and chamber shaft locking sleeve, be respectively equipped with filler and seal cage at the rear of described stationary ring, anti-axial force location impeller is installed on described pump shaft between described chamber locking-type shaft seal case and impeller, on the wheel disc of described anti-axial force location impeller, have with described impeller on blade ligule blade towards the opposite.
Described chamber locking-type zero leakage shaft seal slag stock pump, is characterized in that: between the two ends and pump shaft of described chamber shaft locking sleeve, between rotating ring push-tight ring and the end face of annular projection, chamber locks between secondary gland and rotating ring push-tight ring, between stationary ring and the inwall of chamber lock gland and be respectively equipped with seal ring between anti-axial force location impeller and impeller.
Described chamber locking-type zero leakage shaft seal slag stock pump, is characterized in that: the rear end that secondary gland is locked in described chamber has respectively correspondence and snaps in the annular extension part in the multiple grooves on the outer wall of lock gland front side, chamber.
Described chamber locking-type zero leakage shaft seal slag stock pump, is characterized in that: the rear end of described rotating ring push-tight ring is provided with annular groove, the front end of described rotating ring has the annular protuberance snapping in described annular groove.
Described chamber locking-type zero leakage shaft seal slag stock pump, is characterized in that: the rear side of described chamber locking-type shaft seal case has the annular cavity that working space is provided for anti-axial force location impeller.
Beneficial effect of the present invention:
The present invention is rational in infrastructure, reliable, for combined sealed, the length of double advantage of getting packing seal and mechanical seal, sealability is more superior, has that sealing is strong, frictional behaviour good, applied widely, feature low, that accident rate is low, safe, leakage rate is almost nil consumes energy; Meanwhile, adopt anti-axial force location impeller to replace setting sleeve, except playing the positioning action identical with setting sleeve, can also play the effect that reduces axial force, thereby extend the working life of bearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of lumen locking-type zero leakage shaft seal mechanism of the present invention and anti-axial force location impeller.
Fig. 3 is the partial structurtes enlarged diagram of Fig. 2.
Fig. 4 is the structure sectional view of anti-axial force location impeller in the present invention.
Fig. 5 is the structural front view of anti-axial force location impeller in the present invention.
Embodiment
Referring to accompanying drawing, a kind of chamber locking-type zero leakage shaft seal slag stock pump, include the pump housing 1, be arranged on the support 2 of the pump housing 1 front side and be rotatably installed in pump shaft 4 and the chamber locking-type zero leakage shaft seal mechanism on support 2 by bearing 3, the front end of pump shaft 4 extends in the inner chamber of the pump housing 1, and the front end of pump shaft 4 is provided with impeller 5;
Chamber locking-type zero leakage shaft seal mechanism includes the chamber locking-type shaft seal case 6 that is installed on the pump housing 1 front side, be installed on the chamber lock gland 7 of locking-type shaft seal case 6 front sides, chamber, lock the inside of gland 7 and chamber locking-type shaft seal case 6 in chamber and be sleeved on the chamber shaft locking sleeve 8 on pump shaft 4 and the rotating ring push-tight ring 9 between chamber lock gland 7 and chamber shaft locking sleeve 8, secondary gland 10 is locked in chamber, rotating ring 11 and stationary ring 12, on the front end outer wall of chamber shaft locking sleeve 8, there is annular projection 13, the bottom of rotating ring push-tight ring 9 has uncovered forward annular cavity 14, in annular cavity 14, be respectively equipped with multiple springs 15, one end of multiple springs 15 leans respectively on the rear side outer wall of annular projection 13, the other end of multiple springs 15 leans respectively on the bottom surface of annular cavity 14, chamber is locked secondary gland 10 and is looped around the outside of rotating ring push-tight ring 9 and rotating ring push-tight ring 9 is locked on the end face of annular projection 13, rotating ring 11 is fixed on the outer wall of chamber shaft locking sleeve 8, the front end of rotating ring 11 leans the rear end at rotating ring push-tight ring 9, stationary ring 12 be fixed on the inwall of chamber lock gland 7 and and chamber shaft locking sleeve 8 between there is gap, between rotating ring 11 and stationary ring 12, be sealed and matched for contactless dynamic pressure type, between the inwall of chamber locking-type shaft seal case 6 and chamber shaft locking sleeve 8, be respectively equipped with filler 16 and seal cage 17 at the rear of stationary ring 12,
Anti-axial force location impeller 18 is installed on pump shaft 4 between chamber locking-type shaft seal case 6 and impeller 5, on the wheel disc of anti-axial force location impeller 18, have with impeller 5 on blade ligule blade 19 towards the opposite.
In the present invention, between the two ends of chamber shaft locking sleeve 8 and pump shaft 4, between rotating ring push-tight ring 9 and the end face of annular projection 13, chamber locks between secondary gland 10 and rotating ring push-tight ring 9, between stationary ring 12 and the inwall of chamber lock gland 7 and be respectively equipped with seal ring 20 between anti-axial force location impeller 18 and impeller 5; The rear end that secondary gland 10 is locked in chamber has respectively correspondence and snaps in the annular extension part 21 in the multiple grooves on the lock gland 7 front side outer walls of chamber; The rear end of rotating ring push-tight ring 9 is provided with annular groove, and the front end of rotating ring 11 has the annular protuberance 22 snapping in annular groove; The rear side of chamber locking-type shaft seal case 6 has the annular cavity 23 that working space is provided for anti-axial force location impeller 18.
The double advantage of getting packing seal and mechanical seal of the present invention, makes up the shortcoming of two kinds of sealings, realize first the perfect adaptation of two kinds of seal form.Its left end is non-contact mechanical seal, it is chamber locking-type zero leakage shaft seal mechanism, utilize hydrodynamic effect, make the surface of dynamic and static ring 12 produce fluid film, thereby rotating ring 11 is separated with stationary ring 12, thereby greatly reduce wearing and tearing and the superheating phenomenon that the direct contact in conventional machinery sealing causes, seal durability is extended more, consume energy lower, stability is stronger, and rotating ring 11 and stationary ring 12 to separate anti-seismic performance extremely strong.Simultaneously more at fed sheet of a media impurity, in the larger situation of particle, packing seal can be played the effect of impurity screening, in order to protect the work safety of rotating ring 11 and stationary ring 12 in mechanical seal.
Meanwhile, adopt anti-axial force location impeller 18 to replace traditional setting sleeve, except playing the positioning action identical with setting sleeve, can also play the effect that reduces axial force, thereby extend the working life of bearing 3.
Claims (5)
1. a chamber locking-type zero leakage shaft seal slag stock pump, it is characterized in that: include the pump housing, be arranged on the support of pump housing front side and rotate rack-mount pump shaft and chamber locking-type zero leakage shaft seal mechanism by bearing, the front end of described pump shaft extends in the inner chamber of the pump housing, and the front end of pump shaft is provided with impeller, described chamber locking-type zero leakage shaft seal mechanism includes the chamber locking-type shaft seal case that is installed on pump housing front side, be installed on the chamber lock gland of locking-type shaft seal case front side, chamber, lock the inside of gland and chamber locking-type shaft seal case in chamber and be sleeved on the chamber shaft locking sleeve on pump shaft and the rotating ring push-tight ring between chamber lock gland and chamber shaft locking sleeve, secondary gland is locked in chamber, rotating ring and stationary ring, on the front end outer wall of described chamber shaft locking sleeve, there is annular projection, the bottom of described rotating ring push-tight ring has uncovered forward annular cavity, in described annular cavity, be respectively equipped with multiple springs, one end of described multiple springs leans respectively on the rear side outer wall of described annular projection, the other end of multiple springs leans respectively on the bottom surface of described annular cavity, described chamber is locked secondary gland ring around the outside of described rotating ring push-tight ring and rotating ring push-tight ring is locked on the end face of described annular projection, described rotating ring is fixed on the outer wall of chamber shaft locking sleeve, the front end of rotating ring leans the rear end at described rotating ring push-tight ring, described stationary ring be fixed on the inwall of described chamber lock gland and and described chamber shaft locking sleeve between there is gap, between described rotating ring and stationary ring, be sealed and matched for contactless dynamic pressure type, between the inwall of described chamber locking-type shaft seal case and chamber shaft locking sleeve, be respectively equipped with filler and seal cage at the rear of described stationary ring, anti-axial force location impeller is installed on described pump shaft between described chamber locking-type shaft seal case and impeller, on the wheel disc of described anti-axial force location impeller, have with described impeller on blade ligule blade towards the opposite.
2. chamber locking-type zero leakage shaft seal slag stock pump according to claim 1, is characterized in that: between the two ends and pump shaft of described chamber shaft locking sleeve, between rotating ring push-tight ring and the end face of annular projection, chamber locks between secondary gland and rotating ring push-tight ring, between stationary ring and the inwall of chamber lock gland and be respectively equipped with seal ring between anti-axial force location impeller and impeller.
3. chamber locking-type zero leakage shaft seal slag stock pump according to claim 1, is characterized in that: the rear end that secondary gland is locked in described chamber has respectively correspondence and snaps in the annular extension part in the multiple grooves on the outer wall of lock gland front side, chamber.
4. chamber locking-type zero leakage shaft seal slag stock pump according to claim 1, is characterized in that: the rear end of described rotating ring push-tight ring is provided with annular groove, and the front end of described rotating ring has the annular protuberance snapping in described annular groove.
5. chamber locking-type zero leakage shaft seal slag stock pump according to claim 1, is characterized in that: the rear side of described chamber locking-type shaft seal case has the annular cavity that working space is provided for anti-axial force location impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080692.5A CN103821729A (en) | 2014-03-06 | 2014-03-06 | Cavity lock type zero leakage shaft seal slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080692.5A CN103821729A (en) | 2014-03-06 | 2014-03-06 | Cavity lock type zero leakage shaft seal slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103821729A true CN103821729A (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410080692.5A Pending CN103821729A (en) | 2014-03-06 | 2014-03-06 | Cavity lock type zero leakage shaft seal slurry pump |
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| Country | Link |
|---|---|
| CN (1) | CN103821729A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927579A (en) * | 2016-07-01 | 2016-09-07 | 南京林业大学 | Inner-leakage-free axial force self-balancing centrifugal fluid conveying device |
| CN107246403B (en) * | 2017-07-06 | 2023-09-05 | 邯钢集团邯宝钢铁有限公司 | Shaft end sealing device of acid mist fan |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54117908A (en) * | 1978-03-06 | 1979-09-13 | Kuraray Co Ltd | Activated slurry pump |
| EP0037637A1 (en) * | 1980-03-07 | 1981-10-14 | Slurrytech International (Orion) Limited | A pump with means for adjusting the clearances between the impeller and the housing |
| CN1824956A (en) * | 2006-03-29 | 2006-08-30 | 陈潜 | Axial parking sealing device |
| CN201193623Y (en) * | 2008-03-14 | 2009-02-11 | 威海芬德双轮泵业有限公司 | Under water stuff pump |
| CN202327106U (en) * | 2011-11-10 | 2012-07-11 | 天津市合润科技有限责任公司 | Heavy type rotary mechanical sealing device with hydraulic balance structure |
| CN202468445U (en) * | 2012-01-13 | 2012-10-03 | 广州有色金属研究院 | Slurry pump capable of conveniently regulating axial position of impeller |
-
2014
- 2014-03-06 CN CN201410080692.5A patent/CN103821729A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54117908A (en) * | 1978-03-06 | 1979-09-13 | Kuraray Co Ltd | Activated slurry pump |
| EP0037637A1 (en) * | 1980-03-07 | 1981-10-14 | Slurrytech International (Orion) Limited | A pump with means for adjusting the clearances between the impeller and the housing |
| CN1824956A (en) * | 2006-03-29 | 2006-08-30 | 陈潜 | Axial parking sealing device |
| CN201193623Y (en) * | 2008-03-14 | 2009-02-11 | 威海芬德双轮泵业有限公司 | Under water stuff pump |
| CN202327106U (en) * | 2011-11-10 | 2012-07-11 | 天津市合润科技有限责任公司 | Heavy type rotary mechanical sealing device with hydraulic balance structure |
| CN202468445U (en) * | 2012-01-13 | 2012-10-03 | 广州有色金属研究院 | Slurry pump capable of conveniently regulating axial position of impeller |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927579A (en) * | 2016-07-01 | 2016-09-07 | 南京林业大学 | Inner-leakage-free axial force self-balancing centrifugal fluid conveying device |
| CN105927579B (en) * | 2016-07-01 | 2019-01-04 | 南京林业大学 | A kind of centrifugal fluid transporter of non-internal leakage axial force self-balancing |
| CN107246403B (en) * | 2017-07-06 | 2023-09-05 | 邯钢集团邯宝钢铁有限公司 | Shaft end sealing device of acid mist fan |
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Application publication date: 20140528 |