CN103821759A - Cavity locking type zero-leakage shaft seal mechanism of slurry pump - Google Patents
Cavity locking type zero-leakage shaft seal mechanism of slurry pump Download PDFInfo
- Publication number
- CN103821759A CN103821759A CN201410081492.1A CN201410081492A CN103821759A CN 103821759 A CN103821759 A CN 103821759A CN 201410081492 A CN201410081492 A CN 201410081492A CN 103821759 A CN103821759 A CN 103821759A
- Authority
- CN
- China
- Prior art keywords
- chamber
- ring
- shaft
- locking
- shaft seal
- 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 invention discloses a cavity locking type zero-leakage shaft seal mechanism of a slurry pump. The cavity locking type zero-leakage shaft seal mechanism comprises a cavity locking type shaft seal box, a cavity locking pressure cover and a pump shaft, wherein the pump shaft is sleeved with a cavity locking shaft sleeve; an annular bulge is arranged on the outer wall at the front end of the cavity locking shaft sleeve; the cavity locking type zero-leakage shaft seal mechanism comprises a movable ring pushing and tightening ring, a cavity locking secondary pressing cover, a movable ring and a static ring; a plurality of springs are respectively arranged in an annular concave cavity at the bottom of the movable ring pushing and tightening ring; one ends of the springs are respectively leaned against the outer wall of the rear side of the annular bulge and the other ends of the springs are respectively leaned against the bottom face of the annular concave cavity; the cavity locking secondary pressing cover is used for locking the movable ring pushing and tightening ring; the movable ring is fixedly arranged on the outer wall of the cavity locking shaft sleeve and is leaned against the rear end of the movable ring pushing and tightening ring; the static ring is fixedly arranged on the inner wall of the cavity locking pressure cover; the movable ring and the static ring are in non-contact type dynamic pressure sealing fit; fillers and a water sealing ring are arranged between the inner wall of the cavity locking type shaft seal box and the cavity locking shaft sleeve. The cavity locking type zero-leakage shaft seal mechanism of the slurry pump is reasonable and reliable in structure and is in combined type seal; the cavity locking type zero-leakage shaft seal mechanism combines the advantages of filler seal and mechanical seal 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 slag stock pump chamber locking-type zero leakage shaft seal mechanism.
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.
Summary of the invention
The object of this invention is to provide a kind of slag stock pump chamber locking-type zero leakage shaft seal mechanism, for combined sealed, the length of double advantage of getting packing seal and mechanical seal, makes sealability more superior.
Technological scheme of the present invention is as follows:
One slag stock pump chamber locking-type zero leakage shaft seal mechanism, it is characterized in that: include be installed on pump housing front side chamber locking-type shaft seal case, be installed on the chamber lock gland of locking-type shaft seal case front side, chamber and successively through chamber lock gland and chamber locking-type shaft seal case and extend to the pump shaft in the pump housing, on described pump shaft, in the internal sleeve of chamber lock gland and chamber locking-type shaft seal case, chamber shaft locking sleeve is housed, on the front end outer wall of described chamber shaft locking sleeve, there is annular projection, include 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, 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.
Described slag stock pump chamber locking-type zero leakage shaft seal mechanism, 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 lock between secondary gland and rotating ring push-tight ring and stationary ring and the inwall of chamber lock gland between be respectively equipped with seal ring.
Described slag stock pump chamber locking-type zero leakage shaft seal mechanism, 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 slag stock pump chamber locking-type zero leakage shaft seal mechanism, 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.
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, having that sealing is strong, frictional behaviour good, applied widely, the feature low, that accident rate is low, safe, leakage rate is almost nil that consumes energy, is the highly sophisticated products of energy-conserving and environment-protective of new generation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the partial structurtes enlarged view of Fig. 1.
Fig. 3 is structure explosive view of the present invention.
Embodiment
Referring to accompanying drawing, one slag stock pump chamber locking-type zero leakage shaft seal mechanism, include be installed on pump housing front side chamber locking-type shaft seal case 1, be installed on the chamber lock gland 2 of locking-type shaft seal case 1 front side, chamber and successively through chamber lock gland 2 and chamber locking-type shaft seal case 1 and extend to the pump shaft in the pump housing, on pump shaft, in the internal sleeve of chamber lock gland 2 and chamber locking-type shaft seal case 1, chamber shaft locking sleeve 3 is housed, on the front end outer wall of chamber shaft locking sleeve 3, there is annular projection 4, include the rotating ring push-tight ring 5 between chamber lock gland 2 and chamber shaft locking sleeve 3, secondary gland 6 is locked in chamber, rotating ring 7 and stationary ring 8, the bottom of rotating ring push-tight ring 5 has uncovered forward annular cavity 9, in annular cavity 9, be respectively equipped with multiple springs 10, one end of multiple springs 10 leans respectively on the rear side outer wall of annular projection 4, the other end of multiple springs 10 leans respectively on the bottom surface of annular cavity 9, chamber is locked secondary gland 6 and is looped around the outside of rotating ring push-tight ring 5 and rotating ring push-tight ring 5 is locked on the end face of annular projection 4, rotating ring 7 is fixed on the outer wall of chamber shaft locking sleeve 3, the front end of rotating ring 7 leans the rear end at rotating ring push-tight ring 5, stationary ring 8 be fixed on the inwall of chamber lock gland 2 and and chamber shaft locking sleeve 3 between there is gap, between rotating ring 7 and stationary ring 8, be sealed and matched for contactless dynamic pressure type, between the inwall of chamber locking-type shaft seal case 1 and chamber shaft locking sleeve 3, be respectively equipped with filler 11 and seal cage 12 at the rear of stationary ring 8.
In the present invention, between the two ends and pump shaft of chamber shaft locking sleeve 3, between rotating ring push-tight ring 5 and the end face of annular projection 4, chamber lock between secondary gland 6 and rotating ring push-tight ring 5 and stationary ring 8 and the inwall of chamber lock gland 2 between be respectively equipped with seal ring 13; The rear end that secondary gland 6 is locked in chamber has respectively correspondence and snaps in the annular extension part 14 in the multiple grooves on the lock gland 2 front side outer walls of chamber; The rear end of rotating ring push-tight ring 5 is provided with annular groove, and the front end of rotating ring 7 has the annular protuberance 15 snapping in annular groove.
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 the non-contact mechanical seal that adopts laser micropore technology to manufacture, utilize hydrodynamic effect, make the surface of dynamic and static ring 8 produce fluid film, thereby rotating ring 7 is separated with stationary ring 8, thereby greatly reduce wearing and tearing and 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 7 and stationary ring 8 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 7 and stationary ring 8 in mechanical seal.
Claims (4)
1. a slag stock pump chamber locking-type zero leakage shaft seal mechanism, it is characterized in that: include be installed on pump housing front side chamber locking-type shaft seal case, be installed on the chamber lock gland of locking-type shaft seal case front side, chamber and successively through chamber lock gland and chamber locking-type shaft seal case and extend to the pump shaft in the pump housing, on described pump shaft, in the internal sleeve of chamber lock gland and chamber locking-type shaft seal case, chamber shaft locking sleeve is housed, on the front end outer wall of described chamber shaft locking sleeve, there is annular projection, include 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, 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.
2. slag stock pump according to claim 1 chamber locking-type zero leakage shaft seal mechanism, 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 lock between secondary gland and rotating ring push-tight ring and stationary ring and the inwall of chamber lock gland between be respectively equipped with seal ring.
3. slag stock pump according to claim 1 chamber locking-type zero leakage shaft seal mechanism, 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. slag stock pump according to claim 1 chamber locking-type zero leakage shaft seal mechanism, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410081492.1A CN103821759A (en) | 2014-03-06 | 2014-03-06 | Cavity locking type zero-leakage shaft seal mechanism of slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410081492.1A CN103821759A (en) | 2014-03-06 | 2014-03-06 | Cavity locking type zero-leakage shaft seal mechanism of slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103821759A true CN103821759A (en) | 2014-05-28 |
Family
ID=50756989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410081492.1A Pending CN103821759A (en) | 2014-03-06 | 2014-03-06 | Cavity locking type zero-leakage shaft seal mechanism of slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103821759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838329A (en) * | 2017-03-31 | 2017-06-13 | 成都赛乐化新机电有限公司 | Polyvinyl chloride mass polymerization bottom portion's mechanical seal assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4371173A (en) * | 1981-04-28 | 1983-02-01 | M.A.N. Maschinenfabrik Augsburg-Nurnburg Aktiengesellschaft | Fluid-locked shaft seal of reduced sliding speed |
| CN201184415Y (en) * | 2008-01-25 | 2009-01-21 | 昆明理工大学 | Stuffing mechanical combined seal device with external mechanical seal friction pair |
| CN102444718A (en) * | 2010-10-15 | 2012-05-09 | 长沙理工大学 | Combined mechanical seal |
| 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 |
| CN202991613U (en) * | 2012-11-26 | 2013-06-12 | 明光市留香泵业有限公司 | Efficient mechanical sealing structure of marine pump |
-
2014
- 2014-03-06 CN CN201410081492.1A patent/CN103821759A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4371173A (en) * | 1981-04-28 | 1983-02-01 | M.A.N. Maschinenfabrik Augsburg-Nurnburg Aktiengesellschaft | Fluid-locked shaft seal of reduced sliding speed |
| CN201184415Y (en) * | 2008-01-25 | 2009-01-21 | 昆明理工大学 | Stuffing mechanical combined seal device with external mechanical seal friction pair |
| CN102444718A (en) * | 2010-10-15 | 2012-05-09 | 长沙理工大学 | Combined mechanical seal |
| 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 |
| CN202991613U (en) * | 2012-11-26 | 2013-06-12 | 明光市留香泵业有限公司 | Efficient mechanical sealing structure of marine pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838329A (en) * | 2017-03-31 | 2017-06-13 | 成都赛乐化新机电有限公司 | Polyvinyl chloride mass polymerization bottom portion's mechanical seal assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201050598Y (en) | Mechanical seal | |
| CN101713461A (en) | Dry gas sealing device for technical screw compressor and application system thereof | |
| CN202158190U (en) | Gland type filling dynamic sealing device | |
| CN105422863B (en) | A kind of liquid oxygen pump sealer with assembled | |
| CN200968458Y (en) | Ball milling helix tube sealing device | |
| CN103939607A (en) | Integrated shaft end sealing device | |
| CN101893093B (en) | Dynamic seal structure of screw shaft of underwater pressure-bearing shell | |
| CN203783955U (en) | Double-end-face packaging mechanical seal | |
| CN203051766U (en) | Floating oil seal component and mechanical device with same | |
| CN204127321U (en) | A kind of mechanical seal device | |
| CN103821759A (en) | Cavity locking type zero-leakage shaft seal mechanism of slurry pump | |
| CN103629357B (en) | The sealing mechanism of vane type rotary valve | |
| CN103821729A (en) | Cavity lock type zero leakage shaft seal slurry pump | |
| CN111810253A (en) | Double-end-face dry air sealing device for industrial steam turbine | |
| CN107191596A (en) | A kind of non-contact mechanical seal and the seal assembly for preventing lubrication leakage | |
| CN205330867U (en) | Shaft seal device and have device's axial flow turbine | |
| CN104791291A (en) | Carbon ring sealed centrifugal fan | |
| CN202612648U (en) | Zero-gravity dynamic pressure groove magnetic shaft sealing device | |
| CN205715302U (en) | Twisting sucker head bearing housing sealing device | |
| CN203730762U (en) | High-pressure large-torque axial seal device | |
| CN210034422U (en) | Carbon ring type floating ring sealing device | |
| CN218494188U (en) | Shaft seal device of horizontal double-shaft self-cleaning stirring equipment | |
| CN204127325U (en) | The main shaft sealing construction that a kind of many silt particles axial-flow hydrogenerator group is suitable for | |
| CN206221339U (en) | A kind of Novel machine seal structure | |
| CN202645982U (en) | Non-contact type seal for ore pulp pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140528 |
|
| RJ01 | Rejection of invention patent application after publication |