CN102116308B - Adjustable mechanical sealing structure for pump - Google Patents
Adjustable mechanical sealing structure for pump Download PDFInfo
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- CN102116308B CN102116308B CN201110092798A CN201110092798A CN102116308B CN 102116308 B CN102116308 B CN 102116308B CN 201110092798 A CN201110092798 A CN 201110092798A CN 201110092798 A CN201110092798 A CN 201110092798A CN 102116308 B CN102116308 B CN 102116308B
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Abstract
The invention discloses an adjustable mechanical sealing structure for a pump, and relates to the adjustable mechanical sealing structure for a horizontal wear-resistant slurry pump and belongs to the technical field of mechanical sealing. The adjustable mechanical sealing structure for the pump comprises a moving ring, a stationary ring, a push ring, a spring, a framework oil seal, an oil seal press cover, a set screw, an inner hexagon bolt, a positioning clip, a bolt, an O-shaped ring, a second connecting flange, a driving ring, an inner shaft sleeve and an outer shaft sleeve, wherein the inner shaft sleeve and the outer shaft sleeve are in sleeve matching, axial distances of the inner shaft sleeve and the outer shaft sleeve can be regulated from -5 millimeters to +5 millimeters; and the connecting flange is additionally provided with a high-pressure water inlet on the basis of an existing low-pressure water inlet and an existing low-pressure outlet, a runner used for introducing high-pressure flushing water a cavity at the inner side of the moving ring and the stationary ring is processed inside the connecting flange, and the pressure of the high-pressure flushing water injected from the high-pressure water inlet is larger than that of the cavity. By virtue of the adjustable mechanical sealing structure for the pump, axial regulation of mechanical sealing can be realized, and complete cooling on the moving ring and the stationary ring can be ensured, thereby the service lives of the moving ring and the stationary ring are greatly prolonged.
Description
Technical field
The mechanical seal structure that the present invention relates to use on the centrifugal pump, the adjustable mechanical seal structure that particularly a kind of horizontal wear-resisting slag stock pump is used belongs to the mechanical sealing technology field.
Background technique
Mechanical seal is by at least one pair of end face perpendicular to spin axis, under the cooperation of the effect of hydrodynamic pressure and compensation mechanism elastic force (or magnetic force) and auxiliary seal, keeps fitting and slide relative and the leakage preventing device that constitutes.Mechanical seal is mainly as the seal arrangement of rotating machinery, such as equipment such as centrifugal pump, centrifuge, reaction kettle and compressors.This type of rotating machinery; Because transmission shaft is applied in inside and outside the equipment; Have a circumferential clearance between axle and the equipment, the flowing medium in the equipment is outwards revealed through this gap, if the equipment internal pressure is lower than barometric pressure; Then air is revealed in equipment through this gap, therefore must have a mechanical seal to stop medium to reveal and prevent the past interior intrusion of outside air outward.
In prior art, as shown in Figure 1, the mechanical seal form that general pump the is used schemes that adopt outer flushing more, its main structure is made up of axle sleeve 1, outside framework oil seal 2, rotating ring 6, stationary ring 7, spring 4, throw-out collar 5, first adpting flange 3, oil sealing cover 14.Axle sleeve 1 usefulness screw 15 is locked it on pump shaft 8, pushes up transmission part 16 and impeller 9 before and after it; Between axle sleeve 1 and the machine envelope pump cover 11 less clearance is arranged, and with the rectangle groove design, in the pump operation process, prevent that the large particle flowing medium from rushing in rotating ring 7 and stationary ring 6 rubbing surfaces.Rotating ring 7 and stationary ring 6 are for face contacts, and its material can be selected according to the flowing medium that concrete pump is carried, and rotating ring 7 is fixed on the axle sleeve 1, and along with axle sleeve 1 and pump shaft 8 rotate together; Stationary ring 6 is fixed on the throw-out collar 5, behind the throw-out collar 5 spring 4 is arranged simultaneously, and it is fixed on first adpting flange 3; Spring 4 is with certain forward thrust simultaneously; Make stationary ring 6 keep contacting, and when rotating ring 7 and stationary ring 6 have certain frictional loss, can compensate with the face of rotating ring 7.Stationary ring 6, throw-out collar 5 and spring 4 are fixed on first adpting flange 3, and first adpting flange, 3 usefulness bolts 12 are connected on the machine envelope pump cover 11, form stationary ring 6, throw-out collar 5, spring 4 and first adpting flange 3 state static with respect to operating as of pump shaft 8.The import and the outlet of cooling water are arranged on first adpting flange 3 simultaneously, and guide cooling water gets into the cavity between rotating ring 7 and the stationary ring 6, in operation process, takes away the heat that the rubbing surface place produces, and reaches cooling action.Outside framework oil seal 2 is between first adpting flange 3 and axle sleeve 1, and on-stream playing prevents that cooling water is toward the effect of external leakage.Oil sealing cover 14 is used to guarantee outside framework oil seal 2 fix in position, and is fixed on first adpting flange 3 with hexagon socket head cap screw and positioning checkpoint 13.O shape circle 10 is used in the inside and outside many places of mechanical seal, to prevent that pump cavity inner fluid medium is to external leakage.The outer flushing scheme of prior art is only cooled off in the rotating ring 7 and stationary ring 6 outsides, and its cooling effect only limits to the rubbing surface outside; And the inboard no-cooling-water flushing of the rubbing surface of rotating ring 7 and stationary ring 6; In pump cavity the washing away of bigger pressure and flowing medium turbulent flow down, less media particle can be broken through the obstruct of axle sleeve 1 rectangle groove, constantly is accumulated to the rubbing surface place of rotating ring 7 and stationary ring 6; The flowing medium particle accumulates at the rubbing surface place too much; Can't cool off with the huge heat of rotating ring 7 friction-produced, cause rotating ring 7 and stationary ring 6 Destructive wears, shorten the working life of rotating ring 7 and stationary ring 6 greatly; Pump with the field in; Usually because pump operation after a period of time, because abrasion and wearing and tearing appear in impeller 9, therefore needs transmission part 16 impeller 9 to regulate integrally; Guarantee the gap of impeller 9 at cavity; So that pump remains at the operation of high efficiency point, and the mechanical seal structure of existing technology is unadjustable, the relative distance that can't regulate mechanical seal and pump shaft 8 according to the pump operation situation.Therefore, though prior art is simple in structure, assembling, housekeeping operation are convenient, and technology capability is good, have that cooling is insufficient, rotating ring 7 and 6 working lifes of stationary ring are short, mechanical seal can not axial adjustment etc. deficiency.
Summary of the invention
The objective of the invention is for solve exist in the prior art mechanical seal can not axial adjustment, cooling is insufficient and rotating ring and stationary ring short problem in working life; A kind of pump disclosed by the invention is used the adjustable mechanical sealing configuration, can realize mechanical seal axial adjustment, guarantee rotating ring and stationary ring fully cools off, prolong working life of rotating ring and stationary ring greatly.
Outstanding improvement characteristics of the present invention are: (1) is divided into internal axle sleeve and external axle sleeve for realizing the axial adjustment of mechanical seal with axle sleeve, and internal axle sleeve is installed on the pump shaft, pushes up on transmission part and the impeller before and after it; External axle sleeve and machine envelope pump cover have less clearance, are provided with rectangle groove with the contacted part of machine envelope pump cover, and rotating ring is fixed on the internal axle sleeve, and there are driving ring and screw in the rear end; Internal axle sleeve and external axle sleeve are that sleeve cooperates; Can realize axial adjustment; After internal axle sleeve and external axle sleeve relative position are adjusted; Tighten screw and produce big coupling mechanism force by driving ring, external axle sleeve is firmly lock onto on the internal axle sleeve, realization internal axle sleeve, external axle sleeve and rotating ring are done as a whole along with pump shaft rotates together.(2) for strengthening the cooling effect of cooling water; The medial and lateral that guarantee rotating ring and stationary ring rubbing surface can both be cooled off fully, change the flushing scheme into integration scenario that outer flushing adds interior flushing, and outer flushing adopts low-pressure washing water to pour into from the pipe joint of low-pressure water import; Pressure is about 0.1MPa; Flow is 4～10L/min, and outer flushing is carried out in the outside of rotating ring and stationary ring rubbing surface with continuing to flow, plays the effect in the cooling friction pair outside; Interior flushing adopts high-pressure washing water to pour into from the pipe joint of high pressure water import, and its pressure is greater than chamber pressure 0.1MPa, and flow is 20～40L/min, and interior flushing is carried out in the inboard of rotating ring and stationary ring rubbing surface with continuing to flow, plays the inboard effect of cooling friction pair.(3) for reducing or avoid the flowing medium friction of granule and the loss of rotating ring and stationary ring and pump cavity; Improve the working life of rotating ring and stationary ring; The pressure that washes in the high-pressure washing water is increased to greater than chamber pressure 0.1Mpa; Make flowing medium can't flow to the rubbing surface of rotating ring and stationary ring, thereby the barrier fluid medium contact, and prolongs the working life of rotating ring and stationary ring greatly with stationary ring with rotating ring.
The objective of the invention is to realize through following technical proposals:
A kind of pump is used the adjustable mechanical sealing configuration, and it comprises outside framework oil seal, spring, throw-out collar, stationary ring, rotating ring, O shape circle, bolt, hexagon socket head cap screw and positioning checkpoint, oil sealing cover and screw; Peripheral unit comprises: impeller, machine envelope pump cover, transmission part; It also comprises adpting flange, driving ring, internal axle sleeve and external axle sleeve; Internal axle sleeve and external axle sleeve are that sleeve cooperates, but both axial adjustment distances be-5mm～+ 5mm; External axle sleeve and the contacted part of machine envelope pump cover are provided with rectangle groove; Adpting flange is on the basis of existing low-pressure water import and low-pressure water outlet; Increase the high pressure water import; And being used for high-pressure washing water guiding is got into the runner of rotating ring and stationary ring inboard cavity in the connection method machined, the high pressure washing water pressure that pours into from the high pressure water import is greater than chamber pressure.
Their annexation is: external axle sleeve is contained on the internal axle sleeve, with screw and driving ring external axle sleeve is locked on internal axle sleeve; Rotating ring is installed on the external axle sleeve and is locked; Stationary ring is installed on the throw-out collar, and connects throw-out collar with spring, the moving ring assembly that is installed on the adpting flange is steadily located and thrust forward arranged; Rotating ring is that face contacts with stationary ring, and is with hexagon socket head cap screw and positioning checkpoint that adpting flange and external axle sleeve is fixing locked after the relative position of internal axle sleeve and external axle sleeve is adjusted, and forms integrated mechanical sealing; The internal axle sleeve of integrated mechanical sealing is contained on the pump shaft, push up the transmission part of rear end after, load onto impeller and hold out against internal axle sleeve; Unclamp hexagon socket head cap screw and positioning checkpoint, adpting flange is locked on machine envelope pump cover with bolt; Between external axle sleeve and the machine envelope pump cover less clearance is arranged, adjusts the position of external axle sleeve, the face that guarantees rotating ring and stationary ring contact with pretightening force necessarily after, lock the screw on the driving ring, external axle sleeve is fixed on the internal axle sleeve; O shape circle is used in the inside and outside many places of mechanical seal, also uses outside framework oil seal between adpting flange and the external axle sleeve, and oil sealing cover is used to guarantee the outside framework oil seal fix in position, and is fixed on the adpting flange with hexagon socket head cap screw and positioning checkpoint.
The pressure of described high-pressure washing water requires greater than pump cavity pressure 0.1MPa, and flow is 20～40L/min.
Low-pressure washing water pours into from the low-pressure water import, flows out from the low-pressure water outlet, and its pressure is 0.1MPa, and flow is 4～10L/min.
Described high-pressure washing water intercepts the friction area that cavity medium gets into rotating ring and stationary ring.
Working procedure of the present invention is: in the installation process of adjustable mechanical seal; Locking hexagon socket head cap screw and positioning checkpoint; Unclamp the screw on the driving ring; Can adjust internal axle sleeve and lock screw again and unclamp positioning checkpoint afterwards according to the position of transmission part and impeller, realize the axial adjustment of mechanical seal.In fact; The locking and positioning clamp can make the relative position of rotating ring and stationary ring remain unchanged, and internal axle sleeve breaks away from external axle sleeve when adjustment; Along with transmission part and impeller axially adjust the distance after; Lock screw once more and make external axle sleeve be fixed in internal axle sleeve, and unclamp positioning checkpoint, recover the relation of the unitary rotation of internal axle sleeve, external axle sleeve and rotating ring.And adpting flange and stationary ring all are fixed on the machine envelope pump cover, are in the static state that does not change.In the pump operation process, internal axle sleeve, external axle sleeve and rotating ring are along with pump shaft circumference high-speed rotation, and rotating ring and stationary ring keep fitting and slide relative; Outer chamber in intercepting; Thereby prevent that flowing medium from leaking into the external world, if behind rotating ring and the stationary ring end wear, can compensate automatically by spring.After pump was moving a period of time, the front and rear cover plate of impeller can be worn, and it increases at overcurrent cavity internal clearance; Influence hydraulic performance; Hexagon socket head cap screw and positioning checkpoint are locked in termination of pumping this moment, unclamp the screw on the external axle sleeve, and it is whole mobile to regulate transmission part, internal axle sleeve and impeller; Realize the gap adjustment of impeller in flow passage components, make waterpower remain on the operation of high efficiency point.
Beneficial effect:
1, after pump was moving a period of time, the axial adjustment that can carry out mechanical seal according to actual conditions made waterpower remain on the operation of high efficiency point to a kind of pump of the present invention with adjustable mechanical seal;
2, a kind of pump of the present invention has strengthened the cooling effect of cooling water with adjustable mechanical seal, and sealing state is stable, and leakage rate is very little;
3, a kind of pump of the present invention has been avoided the friction of the media particle of rotating ring and stationary ring and pump cavity with adjustable mechanical seal; Improved the working life of rotating ring and stationary ring; And its Applicable scope enlarges; Can be used for low temperature, high temperature, high pressure, different rotating speeds, and various Korrosionsmedium with contain bad working environments such as abrasive particle medium.
Description of drawings
Fig. 1 is the sectional view of the mechanical seal for pump structure of prior art;
Fig. 2 is the right elevation of the mechanical seal for pump of prior art;
Fig. 3 is the sectional view of a kind of pump of the present invention with adjustable mechanical seal structure;
Fig. 4 is the right elevation of a kind of pump of the present invention with adjustable mechanical seal;
Wherein: 1-axle sleeve, 2-outside framework oil seal, 3-first adpting flange, 4-spring, 5-throw-out collar, 6-stationary ring, 7-rotating ring, 8-pump shaft, 9-impeller, 10-O shape circle, 11-machine envelope pump cover, 12-bolt, 13-hexagon socket head cap screw and positioning checkpoint, 14-oil sealing cover, 15-screw, 16-transmission part, the outlet of 17-low-pressure water, the import of 18-low-pressure water, 19-adpting flange, 20-external axle sleeve, 21-internal axle sleeve, 22-driving ring, the import of 23-high pressure water.
Concrete mode of execution
Below in conjunction with accompanying drawing and embodiment the present invention is done further explanation:
Embodiment
Like Fig. 3 and shown in Figure 4, a kind of pump is used adjustable mechanical seal, and it comprises rotating ring 7, stationary ring 6, throw-out collar 5, spring 4, outside framework oil seal 2, oil sealing cover 14, screw 15, hexagon socket head cap screw and positioning checkpoint 13, bolt 12 and O shape circle 10; Peripheral unit comprises: pump shaft 8, transmission part 16, machine envelope pump cover 11, impeller 9; It also comprises adpting flange 19, driving ring 22, internal axle sleeve 21 and external axle sleeve 20; Wherein, Internal axle sleeve 21 cooperates for sleeve with external axle sleeve 20, but both axial adjustment apart from be-5mm～+ 5mm, after internal axle sleeve 21 is contained on the pump shaft 8; Withstand on before and after it on transmission part 16 and the impeller 9, internal axle sleeve 21 and drive line structure are connected as one; External axle sleeve 20 is inherited the advantage of prior art, is provided with rectangle groove with machine envelope pump cover 11 contacted parts; Internal axle sleeve 21 can carry out axial adjustment with external axle sleeve 20 disengagings; Behind actual conditions adjustment axial distance according to pump operation; With screw 15 and driving ring 22 external axle sleeve 20 is locked on internal axle sleeve 21, makes internal axle sleeve 21, external axle sleeve 20 drive rotating ring 7 along with pump shaft 8 rotates together.Adpting flange 19 increases high pressure water import 23 on the basis of existing low-pressure water import 18 and low-pressure water outlet 17, and at adpting flange 19 machined runners, high pressure water is guided the inboard cavity that gets into rotating ring 7 and stationary ring 6, realizes washing in the cooling water.The pressure of high-pressure washing water requires greater than pump cavity pressure 0.1MPa the medium of conveying to be pushed in the pump cavity all the time by high-pressure washing water, thereby realizes cooling and intercept the friction area that cavity medium gets into rotating ring 7 and stationary ring 6.
Their annexation is: after external axle sleeve 20 is contained in internal axle sleeve 21, with screw 15 and driving ring 22 external axle sleeve 20 is locked on internal axle sleeve 21; Rotating ring 7 is installed on the external axle sleeve 20 and is locked; Stationary ring 6 is installed on the throw-out collar 5, and connects throw-out collars 5 with spring 4, rotating ring 7 assemblies that are installed on the adpting flange 19 is steadily located and thrust forward arranged; Rotating ring 7 and stationary ring 6 be for face contacts, after the relative position of internal axle sleeve 21 and external axle sleeve 20 is adjusted, with hexagon socket head cap screw and positioning checkpoint 13 adpting flange 19 and external axle sleeve 20 are fixed locked, the formation integrated mechanical sealing; The internal axle sleeve 21 of integrated mechanical sealing is contained on the pump shaft 8, push up the transmission part 16 of rear end after, load onto impeller 9 and hold out against internal axle sleeve 21; Unclamp hexagon socket head cap screw and positioning checkpoint 13, have bolt 12 to be locked on machine envelope pump cover 11 adpting flange 19; Adjust the position of external axle sleeve 20, the face that guarantees rotating ring 7 and stationary ring 6 contact with pretightening force necessarily after, lock the screw 15 on the driving ring 22, external axle sleeve 20 is fixed on the internal axle sleeve 21.O shape circle 10 is used in the inside and outside many places of mechanical seal, also uses outside framework oil seal 2 between adpting flange 19 and the external axle sleeve 20, the low-pressure washing watertight is encapsulated in the cavity, to prevent in the pump cavity that medium or sparge water are to external leakage.Outside framework oil seal 2 is between adpting flange 19 and external axle sleeve 20, and on-stream playing prevents that cooling water is toward the effect of external leakage.Oil sealing cover 14 is used to guarantee outside framework oil seal 2 fix in position, and is fixed on the adpting flange 19 with hexagon socket head cap screw and positioning checkpoint 13.
Working procedure of the present invention is: in the installation process of adjustable mechanical seal; Locking hexagon socket head cap screw and positioning checkpoint 13; Unclamp the screw 15 on the driving ring 22; Can adjust internal axle sleeve 21 and lock screw 15 again and unclamp positioning checkpoint 13 afterwards according to the position of transmission part 16 and impeller 8, realize the axial adjustment of mechanical seal.In fact; Locking and positioning clamp 13 can make the relative position of rotating ring 7 and stationary ring 6 remain unchanged, and internal axle sleeve 21 breaks away from external axle sleeve 20 when adjustment; Along with transmission part 16 and impeller 9 axially adjust distance after; Lock screw 15 once more and make external axle sleeve 20 be fixed in internal axle sleeve 21, and unclamp positioning checkpoint 13, recover the relation of the unitary rotation of internal axle sleeve 21, external axle sleeve 20 and rotating ring 7.And adpting flange 19 all is fixed on the machine envelope pump cover 11 with stationary ring 6, is in the static state that does not change.In the pump operation process, internal axle sleeve 21, external axle sleeve 20 and rotating ring 7 are along with pump shaft 8 circumference high-speed rotation, and rotating ring 7 keeps fitting and slide relative with stationary ring 6; Outer chamber in intercepting; Thereby prevent that flowing medium from leaking into the external world, if behind rotating ring 7 and stationary ring 6 end wears, can compensate automatically by spring 4.After pump was moving a period of time, the front and rear cover plate of impeller 9 can be worn, and it increases at overcurrent cavity internal clearance; Influence hydraulic performance; Hexagon socket head cap screw and positioning checkpoint 13 are locked in termination of pumping this moment, unclamp the screw 15 on the external axle sleeve 20, regulate transmission part 16, internal axle sleeve 21 and impeller 9 whole moving; Realize the gap adjustment of impeller 9 in flow passage components, make waterpower remain on the operation of high efficiency point.
The outstanding improvement characteristics of present embodiment are: (1) is divided into internal axle sleeve 21 and external axle sleeve 20 for realizing the axial adjustment of mechanical seal with axle sleeve 1, and internal axle sleeve 21 is installed on the axle, pushes up before and after it on transmission part 16 and the impeller 9; External axle sleeve 20 has less clearance with machine envelope pump cover 11, is provided with rectangle groove with machine envelope pump cover 11 contacted parts; Rotating ring 7 is fixed on the internal axle sleeve 21, and there are driving ring 22 and screw 15 in the rear end; Internal axle sleeve 21 cooperates for sleeve with external axle sleeve 20; Can realize axial adjustment; After internal axle sleeve 21 and external axle sleeve 20 relative positions are adjusted; Tighten screw 15 and produce big coupling mechanism force by driving ring 22, external axle sleeve 20 is firmly lock onto on the internal axle sleeve 21, realization internal axle sleeve 21, external axle sleeve 20 and rotating ring 7 are done as a whole along with pump shaft 8 rotates together.(2) for strengthening the cooling effect of cooling water; The medial and lateral that guarantee rotating ring 7 and stationary ring 6 rubbing surfaces can both be cooled off fully, change the flushing scheme into integration scenario that outer flushing adds interior flushing, and outer flushing adopts low-pressure washing water to pour into from the low-pressure water import; Pressure is about 0.1MPa; Flow is 4～10L/min, and outer flushing is carried out in the outside of rotating ring 7 and stationary ring 6 rubbing surfaces with continuing to flow, plays the effect in the cooling friction pair outside; Interior flushing adopts high-pressure washing water to pour into from the high pressure water import, and its pressure is greater than chamber pressure 0.1MPa, and flow is 20～40L/min, and interior flushing is carried out in the inboard of rotating ring 7 and stationary ring 6 rubbing surfaces with continuing to flow, plays the effect of cooling friction pair inboard.(3) for reducing or avoid the flowing medium friction of granule and the loss of rotating ring 7 and stationary ring 6 and pump cavity; Improve the working life of rotating ring 7 and stationary ring 6; The pressure that washes in the high-pressure washing water is increased to greater than chamber pressure 0.1Mpa; Make flowing medium can't flow to the rubbing surface of rotating ring 7 and stationary ring 6, thereby the barrier fluid medium contact, and prolongs the working life of rotating ring 7 and stationary ring 6 greatly with stationary ring 6 with rotating ring 7.
Protection scope of the present invention not only is confined to present embodiment, and present embodiment is used to explain the present invention, and all and the present invention change or modification under same principle and design condition is all within protection domain disclosed by the invention.
Claims (4)
1. a pump is used the adjustable mechanical sealing configuration, and it comprises outside framework oil seal (2), spring (4), throw-out collar (5), stationary ring (6), rotating ring (7), O shape circle (10), bolt (12), hexagon socket head cap screw and positioning checkpoint (13), oil sealing cover (14) and screw (15); Peripheral unit comprises: impeller (9), machine envelope pump cover (11), transmission part (16); It is characterized in that: it also comprises adpting flange (19), driving ring (22), internal axle sleeve (21) and external axle sleeve (20); Internal axle sleeve (21) and external axle sleeve (20) are that sleeve cooperates, both can the axial adjustment distance be-and 5mm～+ 5mm; External axle sleeve (20) is provided with rectangle groove with the contacted part of machine envelope pump cover (11); Adpting flange (19) is on the basis of existing low-pressure water import (18) and low-pressure water outlet (17); Increase high pressure water import (23); And being used for high-pressure washing water guiding is got into the runner of rotating ring (7) and the inboard cavity of stationary ring (6) in adpting flange (19) machined, the high pressure washing water pressure that pours into from high pressure water import (23) is greater than chamber pressure;
Their annexation is: external axle sleeve (20) is contained on the internal axle sleeve (21), with screw (15) and driving ring (22) external axle sleeve (20) is locked on internal axle sleeve (21); Rotating ring (7) is installed on the external axle sleeve (20) and is locked; Stationary ring (6) is installed on the throw-out collar (5), and is connected throw-out collar (5) with pin with spring (4), the moving ring assembly that is installed on the adpting flange (19) is steadily located and thrust forward arranged; Rotating ring (7) and stationary ring (6) are for face contacts, and be with hexagon socket head cap screw and positioning checkpoint (13) that adpting flange (19) and external axle sleeve (20) is fixing locked after the relative position of internal axle sleeve (21) and external axle sleeve (20) is adjusted, and forms integrated mechanical sealing; The internal axle sleeve (21) of integrated mechanical sealing is contained on the axle, push up the transmission part (16) of rear end after, load onto impeller (9) and hold out against internal axle sleeve (21); Unclamp hexagon socket head cap screw and positioning checkpoint (13), adpting flange (19) is locked on machine envelope pump cover (11) with bolt; Between external axle sleeve (20) and the machine envelope pump cover (11) less clearance is arranged; Adjust the position of external axle sleeve (20); The face that guarantees rotating ring (7) and stationary ring (6) contact with pretightening force necessarily after, lock the screw (15) on the driving ring, external axle sleeve (20) is fixed on the internal axle sleeve (21); O shape circle (10) is used in mechanical seal, also uses outside framework oil seal (2) between adpting flange (19) and the external axle sleeve (20), and oil sealing cover (14) is used to guarantee outside framework oil seal (2) fix in position, and is fixed on the adpting flange (19) with hexagon socket head cap screw and positioning checkpoint (13).
2. a kind of pump according to claim 1 is used the adjustable mechanical sealing configuration, it is characterized in that: the pressure of described high-pressure washing water requires greater than pump cavity pressure 0.1MPa, and flow is 20～40L/min.
3. a kind of pump according to claim 1 and 2 is used the adjustable mechanical sealing configuration, it is characterized in that: low-pressure washing water pours into from low-pressure water import (18), flows out from low-pressure water outlet (17), and its pressure is 0.1MPa, and flow is 4～10L/min.
4. a kind of pump according to claim 1 and 2 is used the adjustable mechanical sealing configuration, it is characterized in that: described high-pressure washing water intercepts the friction area that cavity medium gets into rotating ring (7) and stationary ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110092798A CN102116308B (en) | 2011-04-13 | 2011-04-13 | Adjustable mechanical sealing structure for pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110092798A CN102116308B (en) | 2011-04-13 | 2011-04-13 | Adjustable mechanical sealing structure for pump |
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| CN102116308A CN102116308A (en) | 2011-07-06 |
| CN102116308B true CN102116308B (en) | 2012-08-29 |
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| CN201110092798A Active CN102116308B (en) | 2011-04-13 | 2011-04-13 | Adjustable mechanical sealing structure for pump |
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| DE102013202569A1 (en) * | 2013-02-18 | 2014-08-21 | Robert Bosch Gmbh | Assembly comprising pumping element and mounting flange |
| CN103671259A (en) * | 2013-12-09 | 2014-03-26 | 无锡艾比德泵业有限公司 | Pump cover of filler pump |
| CN103742438B (en) * | 2013-12-26 | 2016-06-22 | 大连深蓝泵业有限公司 | Centrifugal multistage pump multiple centrifugal pump rotating-shaft support devices |
| CN104089020A (en) * | 2014-07-07 | 2014-10-08 | 上海创异流体机械有限公司 | Mechanical seal device with washing and cooling system |
| DE102015221255A1 (en) * | 2015-10-30 | 2017-05-04 | Ksb Aktiengesellschaft | Arrangement for shaft seal |
| CN107059269B (en) * | 2016-12-23 | 2020-06-09 | 杰克缝纫机股份有限公司 | Thread cutting device of sewing machine |
| CN109026821B (en) * | 2018-09-13 | 2020-05-26 | 湖南山水节能科技股份有限公司 | Pump with adjustable sealing structure |
| CN109372994A (en) * | 2018-11-13 | 2019-02-22 | 湖南天宏泵业制造有限公司 | A kind of adjustable type integrated mechanical sealing |
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