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CN2373639Y - Spring closed mechanical seal - Google Patents

Spring closed mechanical seal Download PDF

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Publication number
CN2373639Y
CN2373639Y CN 99206939 CN99206939U CN2373639Y CN 2373639 Y CN2373639 Y CN 2373639Y CN 99206939 CN99206939 CN 99206939 CN 99206939 U CN99206939 U CN 99206939U CN 2373639 Y CN2373639 Y CN 2373639Y
Authority
CN
China
Prior art keywords
spring
mechanical seal
safety cover
spring seat
slippage
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.)
Expired - Fee Related
Application number
CN 99206939
Other languages
Chinese (zh)
Inventor
刘洪楷
刘彦春
张雨虹
石富江
高纪平
郝进才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHIJIAZHUANG INDUSTRIAL WATER PUMP FACTORY
Original Assignee
SHIJIAZHUANG INDUSTRIAL WATER PUMP FACTORY
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHIJIAZHUANG INDUSTRIAL WATER PUMP FACTORY filed Critical SHIJIAZHUANG INDUSTRIAL WATER PUMP FACTORY
Priority to CN 99206939 priority Critical patent/CN2373639Y/en
Application granted granted Critical
Publication of CN2373639Y publication Critical patent/CN2373639Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Mechanical Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The spring closed mechanical seal comprises a rotating ring, a compensating ring, a spring and a spring seat, and is characterized in that the spring and the spring seat are positioned in a protective cover, the compensating ring is positioned on a sliding sleeve, and the sliding sleeve is positioned in a sliding hole of the protective cover. The utility model discloses the preparation can effectively be avoided because of the invasion of grit or abrasive medium to spring and spring holder, compact structure, accommodation are wide, use easy maintenance, the suitable mechanical seal device as various working medium, especially abrasive medium.

Description

The closed mechanical seal of a kind of spring
The utility model relates to a kind of improved mechanical seal, belongs to the mechanical sealing technology field.
Mechanical seal claims end face seal again, is the device of a kind of restraint of labour fluid along the running shaft leakage, is made up of rotating ring, stationary ring, elastic element and auxiliary seal ring etc. usually.During work, utilize counterrotating two coating surfaces of rotating ring and stationary ring and auxiliary seal to realize the function of its sealing.The abrasion of sealing surface can compensate automatically by elastic element.Elastic element can adopt spring or bellows etc., and the elastic element multiaction is on stationary ring, so stationary ring also claims compensated loop.Can mechanical seal proper functioning, depends on that can sealing surface set up reliable and stable lubricating liquid film and in time frictional heat is derived, in addition, when elastic element is spring, require spring can press all the time effectively on compensated loop, to guarantee sealing load.
The structural type of mechanical seal, according to working fluid medium, sealing load, the difference of requirement such as temperature and leakage rate and various forms is arranged, when flowing medium is when containing the abrasive particle medium of solid particle, except that the material of sealing surface need be selected for use the hard, wear-resistant material, for preventing to snap in spring because of solid particle, influence telescopic spring, and cause the phenomenon of seal failure to take place, the mechanical seal of abrasive particle medium often is designed to integrally closed structure, it is rotating ring, compensated loop, spring, integral body such as spring seat place the chamber of a sealing, on chamber, establish into, water outlet is introduced the cooling and lubricating water, this kind structure is though can exempt the invasion to spring and spring seat of abrasive particle or Korrosionsmedium, abrasion, but also brought the inconvenience in the use, the one, cause its physical dimension bigger, need bigger accommodation space; The 2nd, cleanliness, the corrosivity of cooling and lubricating water to be had relatively high expectations, this makes some slag stock pumps of quoting self residual-slurry water through purifying or sewage and carrying out cooling and lubricating, sewage pump etc. can't use this sealing structure; The 3rd, the abrasion condition of sealing surface is difficult for observing, and maintenance is also inconvenient.At present, along with of the extensive use of mechanical devices such as slag stock pump, sewage pump at aspects such as electric power, metallurgy, coal, building materials, environmental protection, the mechanical seal that is applicable to such mechanical device also there has been further requirement, need provide various structure advanced persons, mechanical seal easy to use, to satisfy the functional need of such mechanical device.
The purpose of this utility model is to provide a kind of mechanical seal that adapts to various working fluids, is particularly useful for the abrasive particle medium fluid.
The purpose of this utility model is achieved in that
The closed mechanical seal of a kind of spring; it comprises rotating ring, compensated loop, spring, spring seat; wherein; spring one end presses on compensated loop, the other end is seated in the spring seat; it is characterized in that described spring, spring seat are positioned at a safety cover 5, described compensated loop is installed in slippage and overlaps in the edge mouth of 6 one ends; the slippage cover is arranged in safety cover slip hole 7, and spring presses in slippage and puts.
Above-mentioned mechanical seal is equipped with auxiliary seal ring 8 on the described safety cover slip hole, and described spring seat is threaded with safety cover, described number of springs be a plurality of, be distributed on the spring seat.
Above-mentioned mechanical seal is provided with baffle ring 9 between described slippage cover and the spring, and described safety cover cylindrical is provided with shift fork 10, and the shift fork fork is on the pin 11 of safety cover end face.
Above-mentioned mechanical seal, the sealing surface of the described compensated loop knife edge type that is as the criterion, the width of the edge of a knife is 2-4MM.
Model utility; after spring and spring seat place establish the protecting jacket of sealing; can effectively prevent invasion and the corrosion of abrasive particle or Korrosionsmedium to spring and spring seat; therefore the cooling and lubricating water that uses there is not strict restriction; and compact structure; volume is less, and is suitable to various working mediums, the especially mechanical seal device of abrasive particle medium.
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A sectional drawing of Fig. 1.
Consult Fig. 1,2, be used for an embodiment of slag slurry submersible pump shown in the figure for the utility model.Among the figure, the utility model is loaded on the impeller shaft end of pump, impeller shaft is vertical state rotation, safety cover 5 is fixed on the diapire 12 of pump motor axle head oil sump, auxiliary seal ring 13 is housed on the cylindrical of safety cover, pressing plate 14 is equipped with in the exterior edge face, when screwing screw 15 clamping platens, safety cover can be fixed in the mounting hole of oil sump diapire, and can compress realization sealing between auxiliary seal ring 13, the cylindrical that makes cover and the hole wall simultaneously; Spring seat 4 is by in the screw that is threaded into safety cover on its external diameter, and the quantity of spring 3 is 8, uniform along the end face of spring seat; Compensated loop 2 is set on the exterior edge face of slippage cover 6, baffle ring 9 is positioned on the interior edge face of slippage cover, spring presses on baffle ring, the slip hole 7 of safety cover is slidingly matched with the cylindrical of slippage cover, the auxiliary seal ring 8 of slip hole is loaded on the hole end surface of slip hole, during clamping platen, can simultaneously this auxiliary seal ring be compressed, realize the sealing between slippage cover and the slip hole; Shift fork 10 is located on the safety cover cylindrical, and pin 11 is a screw, is screwed on the screw of safety cover end face that the curve bath of shift fork is stuck on the cylindrical of screw, is used to prevent that compensated loop from rotating; Rotating ring 1 is set on the rotary sleeve 16, rotary sleeve is fixed on the impeller shaft by screw 17, auxiliary seal ring 18 is housed between rotary sleeve and the impeller shaft, the sealing part of rotating ring and compensated loop has cooling and lubricating water spray pipe 19, in this figure illustrated embodiment, cooling and lubricating water causes pump discharge contains molecule after purifying residual-slurry water, so the rotating ring outer end also is equipped with and is got rid of sand table 20, the water and the solids precipitation thing that are used for stockpiling in dish throw away; Among the figure, the outside framework oil seal 21 of safety cover top is used for sealing the fluid of oil sump.
Because after the utility model adopts the spring enclosed construction, lower to the requirement of cooling and lubricating water, so when being used for figure embodiment slag stock pump device, can quote pump discharge contains molecule after purifying slag slurry WATER AS FLOW MEDIUM is the cooling and lubricating water, make the sealing of slag stock pump select for use design to become simple, use through practical application, favorable sealing property, compact structure uses maintenance all to repair very much conveniently, obtain satisfied using effect.

Claims (4)

1. closed mechanical seal of spring; it comprises rotating ring, compensated loop, spring, spring seat; wherein; spring one end presses on compensated loop, another sits up straight in the sub-spring seat; it is characterized in that described spring, spring seat are positioned at a safety cover [5], described compensated loop is installed in the edge mouth of slippage cover [6] one ends; the slippage cover is arranged in safety cover slip hole [7], and spring presses in slippage and puts.
2. mechanical seal according to claim 1 is characterized in that, auxiliary seal ring [8] is housed on the described safety cover slip hole, and described spring seat is threaded with safety cover, described number of springs be a plurality of, be distributed on the spring seat.
3. mechanical seal according to claim 2 is characterized in that, is provided with baffle ring [9] between described slippage cover and the spring, and described safety cover cylindrical is provided with shift fork [10], and the shift fork fork is on the pin [11] of safety cover end face.
4. mechanical seal according to claim 3 is characterized in that, the sealing surface of the described compensated loop knife edge type that is as the criterion, and the width of the edge of a knife is 2-4MM.
CN 99206939 1999-04-30 1999-04-30 Spring closed mechanical seal Expired - Fee Related CN2373639Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99206939 CN2373639Y (en) 1999-04-30 1999-04-30 Spring closed mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99206939 CN2373639Y (en) 1999-04-30 1999-04-30 Spring closed mechanical seal

Publications (1)

Publication Number Publication Date
CN2373639Y true CN2373639Y (en) 2000-04-12

Family

ID=34001078

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99206939 Expired - Fee Related CN2373639Y (en) 1999-04-30 1999-04-30 Spring closed mechanical seal

Country Status (1)

Country Link
CN (1) CN2373639Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072322A (en) * 2011-01-31 2011-05-25 江苏金鹰流体机械有限公司 Combined type sealing device with double end faces
CN103216464A (en) * 2013-01-18 2013-07-24 江苏亚梅泵业制造有限公司 Desulphurization pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072322A (en) * 2011-01-31 2011-05-25 江苏金鹰流体机械有限公司 Combined type sealing device with double end faces
CN103216464A (en) * 2013-01-18 2013-07-24 江苏亚梅泵业制造有限公司 Desulphurization pump

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee