CN108757550A - A kind of corrosion-resistant alkali pump integrated mechanical sealing - Google Patents

A kind of corrosion-resistant alkali pump integrated mechanical sealing Download PDF

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Publication number
CN108757550A
CN108757550A CN201810470607.4A CN201810470607A CN108757550A CN 108757550 A CN108757550 A CN 108757550A CN 201810470607 A CN201810470607 A CN 201810470607A CN 108757550 A CN108757550 A CN 108757550A
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CN
China
Prior art keywords
gland
impeller
ring
spring
corrosion
Prior art date
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Withdrawn
Application number
CN201810470607.4A
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Chinese (zh)
Inventor
凤元军
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Anhui Green Ring Pump Co Ltd
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Anhui Green Ring Pump Co Ltd
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Publication date
Application filed by Anhui Green Ring Pump Co Ltd filed Critical Anhui Green Ring Pump Co Ltd
Priority to CN201810470607.4A priority Critical patent/CN108757550A/en
Publication of CN108757550A publication Critical patent/CN108757550A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/06—Lubrication
    • F04D29/061—Lubrication especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/32—Esters of carbonic acid
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/221—Six-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/36—Seal compatibility, e.g. with rubber

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a kind of alkali pump integrated mechanical sealings, more particularly to a kind of corrosion-resistant alkali pump integrated mechanical sealing, including axle sleeve, gland and the media end sealing on the inside of gland and the atmosphere end water-stop on the outside of gland, impeller is set to the end of pump shaft by impeller hub, the axle sleeve is equipped with the staircase structural model connected by inclined surface close to the side of impeller, staircase structural model is equipped with annular groove of the opening towards pump shaft close to the side of impeller, the staircase structural model is equipped with axially position hole, side of the axle sleeve far from impeller is equipped with convex shape and radial positioning hole.The present invention has the following advantages compared with prior art：After the device is installed in alkali pump, it can be used for the medium that pumped (conveying) medium solid content is 40%, the rational design of axle sleeve structure, for the conveying of concentrated base medium, sealing effect is good, environmental protection safe to use, meet industrial production environmental requirement, service life is long, saves pernicious gas processing cost, remarkable in economical benefits.

Description

A kind of corrosion-resistant alkali pump integrated mechanical sealing
Technical field
The present invention relates to a kind of alkali pump integrated mechanical sealings, and in particular to a kind of corrosion-resistant alkali pump packaging type machinery Sealing.
Background technology
Alkali pump be located in use alkali cleaning tower bottom, the rust of pipeline and equipment and the impurity in cracking gas and Heavy constituent polymer is all deposited on bottom of tower, while NaOH and H in tower2S and CO2Component reacts, and generates Na2S、Na2CO3It generates Crystal, pump intake strainer are usually 40 mesh, are frequently occluded in the actual production process, make to evacuate in pump, strainer is reduced energy It enough solves the problems, such as blocked inlet, but also results in and contained a large amount of impurities into the lye in the pump housing and crystal, due to using itself Backwashing manner, these impurity and crystal are deposited in seal chamber, so that rotating ring and the gap of rotating seat, shaft room is blocked, are led Actuating ring axial action is dumb or even is stuck, and for spring because of the bite that is corroded, elasticity is insufficient, cannot provide intrinsic end face Than pressure, sealing surface is caused good cannot to be bonded, liquid film balance is destroyed, and so that sealing micro- leakage is occurred, with crystal and impurity Engaging friction pair end face, sealing surface are gradually worn, and rotating ring nose balance is ineffective, cause sealing leak amount to increase, eventually lead to Sealing thoroughly failure；
The prior art《The failure analysis of concentrated base pump mechanical sealing and improvement》（Village Yongfu writes）It is analyzed in the technical data that one text provides The failure cause of pump mechanical sealing, and give corresponding corrective measure, it specifically includes：（1）Change secret sealing mechanism, using stationary ring Chinese mugwort 3055 type cassette single mechanical end face seal of lattice is selected in compensation（Packaging type）, precision centering is realized by auto lock ring, it is adjustable Section formula gland directly coordinates common bolt to use, and packaging type structure is easy for installation, and side medium is not present in stationary ring and axle sleeve gap, protects The flexibility of stationary ring nose balance is demonstrate,proved, spring is located on the outside of auxiliary seal ring, completely separated with medium, avoids the corrosion of spring And card resistance；（2）Change Material Matting, removal sealflush with the back of the body it is cold, cassette moving sealing ring and static ring material are all made of carbonization Tungsten has high intensity and hardness, good wearability and corrosion resistance, to which impurity and crystal are difficult to cause to damage to it It is bad, meanwhile, tungsten carbide friction is secondary, and there is excellent thermal conductivity, linear expansion coefficient very little can protect at relatively high temperatures good Leakproofness, auxiliary seal ring material quotes fluorubber FPM2461, corrosion-resistant, elasticity is good, and maximum operating temperature is 250 DEG C；Make With the service life up to 2 years or more, but when in use, it can transport medium solid content and reduce, cannot be satisfied the conveying of high solids medium Demand, and can not avoid making to have corrosive poisonous and harmful media leaks to enter air, as industrial production wants environmental protection The continuous improvement asked, the technology cannot be satisfied corresponding demand.
Application No. is 201310530974.6 to disclose a kind of built-in type double mechanical seal structure of plastic pump, wherein the One rotating ring is mounted on the back side of impeller and the first stationary ring of the first rotating ring cooperation is located in pump cover, and the first stationary ring passes through the first bullet Spring connects seal end plate, and the first spring is static not with media contact, and the pump cover connects seal end plate, and impeller is in stationary ring pressure Spring base is fixed on the axis of lid principle impeller side, spring base is equipped with the second rotating ring, the second rotating ring and stationary ring of spring base The contact surface of gland is equipped with the second stationary ring of cooperation, and the second stationary ring and the second rotating ring pass through the second spring pressure on spring base Tightly, using double-face mechanical sealing structure, the coolant pressure of mechanical seal atmospheric side can be improved, is more than mechanical cavity pressure, Ensure that toxic, inflammable and explosive medium does not leak outside；But it is sealed into Split type mechanical seal, and in assembly and replacement, operation is more numerous It is trivial；In assembling process, since its axle sleeve structure limits, it is easy to stationary ring circumferencial direction unbalance stress, leaf when appearing in loading It is susceptible to rigging error when wheel, shell, holder installation, amount of spring compression is easy impacted, leads to face pressure when in use It is in the presence of suddenly big or suddenly small, when face pressure is excessive, is susceptible to abrasion, influences service life, it, can when face pressure is too small Leakage can be will appear, be unsatisfactory for seal request, therefore, it is necessary to be further improved on the basis of this again.
Invention content
The purpose of the present invention is being directed to existing issue, a kind of corrosion-resistant alkali pump integrated mechanical sealing is provided.
The present invention is achieved by the following technical solutions：A kind of corrosion-resistant alkali pump integrated mechanical sealing, including axis Set, gland and the media end sealing on the inside of gland and the atmosphere end water-stop on the outside of gland, gland is equipped with cold But the mouth of a river, the axle sleeve be set to pump shaft outside, impeller by impeller hub be set to pump shaft end, the axle sleeve close to impeller one Side is equipped with the staircase structural model connected by inclined surface, and the staircase structural model is equipped with opening towards pump shaft close to the side of impeller Annular groove, the staircase structural model are equipped with axially position hole, and side of the axle sleeve far from impeller is equipped with convex shape and radial direction Location hole；
The media end seals the first stationary ring for including the first rotating ring on staircase structural model and coordinating with the first rotating ring, First stationary ring is fixed by stationary seat and gland, and gland is equipped with the first spring base, and the first rotating ring and the first stationary ring are by the first bullet The first spring compression between spring abutment and stationary seat；
The atmosphere end water-stop includes the second rotating ring, and a side bottom of the separate impeller of gland is fixedly connected with the second stationary ring, is led to Second spring seat is fixed in the radial positioning hole for crossing pump shaft, and the second rotating ring and the second stationary ring pass through second on second spring seat Spring compression.
Further, O-ring is equipped between the annular groove and impeller hub, which forms diameter with impeller hub To sealing, solve due to seal face caused by parts machining error than press it is non-constant and caused by seal failure ask Topic.
Further, the integrated mechanical sealing is used for alkali pump, and the alkali pump includes the pump housing, the pump housing and gland it Between be equipped with sealing cover, between sealing cover and gland, between gland and stationary seat be equipped with O-ring；With the above the boss structure It is equipped with O-ring between two rotating rings and second spring seat, can ensure the leakproofness of water-stop；The sealing cover is close to impeller hub Side be set as inclined surface, the inclined surface extends to media end seal face, and sealing cover is close to impeller in the prior art The side of wheel hub is multi-step formula structure, is easy to form whirlpool in actual moving process, crystal is caused to accumulate, machine is caused to seal Failure, and in the device sealing surface rational design, whirlpool can be avoided the occurrence of, crystal can be accumulated, ensure media end The normal work of seal face.
Further, there are gaps between second stationary ring and axle sleeve, and the second stationary ring of cooling water pair and second can be made to move Ring fully rinses and cooling.
As further improvement of these options, first spring and second spring are multiple springs form, close Pressure is uniform on cover, is not influenced by diameter of axle variation；First spring designs for silent oscillation, due to the first rotating ring and the first stationary ring Mating reaction, cooperation O-ring medium and the first spring are separated, it is stuck by dielectric corrosion or particle to avoid the first spring.
As further improvement of these options, first spring base is an integral structure with gland, can make to add Work and assembly are simpler, save production cost and use cost.
As further improvement of these options, the integrated mechanical sealing is by axle sleeve, the first rotating ring, first quiet Ring, stationary seat, the first spring, gland, the second stationary ring, the second rotating ring, second spring, second spring seat assemble to obtain, Neng Goujian Step is matched and is replaced in makeup, ensures leakproofness, the service life for contributing to prolonged mechanical to seal.
The cooling nozzle injects cooling-lubricant, and the cooling-lubricant is made of the raw material of following weight percent： Zinc pyrithione 0.02-0.06%, propene carbonate 0.06-0.16%, diglycidylaniline 0.08-0.12%, magnesium stearate 0.04-0.08%, D-sorbite monoglyceride 0.06-0.08%, plant modified materials 1-2%, surplus are water；The plant modified materials Preparation method be：Tamarind seed, the sophora bud, the root of Dahurain angelica are distinguished after levigation dries and be 8-10% to water content, by weight 4:1:1 Mixing substitutes cycle for every 2 minutes to it in being equivalent to the alcohol that 5 times of mass concentrations of its weight are 60% with the frequency of 24.5kHz Extraction obtains extracting solution after twenty minutes, recycles ethyl alcohol, is concentrated into the 1/10 of its volume, is then added and is equivalent to its weight 3-6% Chlorinated paraffin, the rosin of 1-2%, the sodium phosphate of 0.2-0.8%, 0.1-0.4% alkaline earth metal sulfonate, temperature be 60-70 It is stirred to react 30-40 minutes and obtains under conditions of DEG C.
The cooling-lubricant disperses evenly and stably, and can effectively absorb the micro H that unreacted enters the pump housing2S and CO2, in water There is preferable mobility in sealing area, will not be adhered in water-stop region, high lubricating effect, can effectively radiate, energy Absorption abrasion defective material is simultaneously taken out of, protects the materials such as rotating ring and stationary ring tungsten carbide not corroded, effectively slows down its wear extent, extends Its service life.
The present invention has the following advantages compared with prior art：After the device is installed in alkali pump, it is solid to can be used for pumped (conveying) medium The medium that content is 40%, media end is sealed into in-flow structure design, reduce medium and crystal enters seal face can It can property；The rational design of axle sleeve structure, media end form radial seal by O-ring and impeller hub, solve due to parts The face pressure of seal face caused by mismachining tolerance it is non-constant and caused by seal failure the problem of, axially position hole is set It sets, the stability of integrated mechanical sealing installation can be further increased；And water-stop is used in atmospheric side, prevent that there is corrosion The poisonous and harmful media leaks such as property enter air, keep sealing effect more preferable, while can also be to side medium sealing surface and entire seal chamber It cooled down, lubricated and is rinsed；Packaging type structure assembly is simple, is easy installation and replacement, is used for the conveying of concentrated base medium, can Normal operation, without any leakage, sealing effect is good, and environmental protection safe to use meets industrial production environmental requirement, and service life is long, Save pernicious gas processing cost, remarkable in economical benefits.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the structural schematic diagram of axle sleeve.
Fig. 3 is the structural scheme of mechanism that integrated mechanical sealing is installed on alkali pump.
1- pump shafts, 2- axle sleeves, 21- staircase structural models, 22- annular grooves, 23- axially position holes, 24- convex shapes, 25- Radial positioning hole, the first rotating rings of 31-, the first stationary rings of 32-, the first springs of 33-, the first spring bases of 34-, 4- glands, 41- cooling waters Mouthful, 5- sealing covers, the second rotating rings of 61-, the second stationary rings of 62-, 63- second springs, 64- second spring seats, 7-O type circles, 8- impellers, 81- impeller hubs, the 9- pump housings.
Specific implementation mode
The following further describes the present invention with reference to the drawings.
As illustrated in fig. 1-3, a kind of corrosion-resistant alkali pump integrated mechanical sealing, including axle sleeve 2, gland 4 and be located at The media end sealing of 4 inside of gland and the atmosphere end water-stop positioned at 4 outside of gland, gland 4 is equipped with cooling nozzle 41, described Axle sleeve 2 is set to outside pump shaft 1, and impeller 8 is set to the end of pump shaft 1 by impeller hub 81, and the axle sleeve 2 is close to the side of impeller 8 Equipped with the staircase structural model 21 connected by inclined surface, the staircase structural model 21 is equipped with opening towards pump close to the side of impeller 8 The annular groove 22 of axis 1, the staircase structural model 21 are equipped with axially position hole 23, and side of the axle sleeve 2 far from impeller 8 is equipped with convex Type structure 24 and radial positioning hole 25；
Media end sealing include the first rotating ring 31 being located on staircase structural model 21 and coordinate with the first rotating ring 31 the One stationary ring 32, the first stationary ring 32 are fixed by stationary seat and gland 4, and gland 4 is equipped with the first spring base 34,31 He of the first rotating ring First stationary ring 32 is compressed by the first spring 33 between the first spring base 34 and stationary seat；
The atmosphere end water-stop includes the second rotating ring 61, and a side bottom of the separate impeller 8 of gland 4 is fixedly connected with the second stationary ring 62, second spring seat 64 is fixed by the radial positioning hole 25 of pump shaft 1, the second rotating ring 61 and the second stationary ring 62 are by being set to second Second spring 63 on spring base 64 compresses.
Further, O-ring 8, the O-ring 8 and impeller hub are equipped between the annular groove 22 and impeller hub 81 81 formed radial seals, solve due to seal face caused by parts machining error than press it is non-constant and caused by sealing mistake The problem of effect.
Further, the integrated mechanical sealing is used for alkali pump, and the alkali pump includes the pump housing 9, the pump housing 9 and gland It is equipped with sealing cover 5 between 4, between sealing cover 5 and gland 4, is equipped with O-ring between gland 4 and stationary seat；The sealing cover 5 leans on The side of nearly impeller hub 81 is set as inclined surface, and the inclined surface extends to media end seal face, close in the prior art Capping 5 is multi-step formula structure close to the side of impeller hub 81, is easy to form whirlpool in actual moving process, causes to crystallize Object accumulate, cause machine envelope failure, and in the device sealing surface rational design, whirlpool can be avoided the occurrence of, crystal can Accumulation ensures the normal work of media end seal face；24 top of the boss structure and the second rotating ring 61 and second spring seat It is equipped with O-ring between 64, can ensure the leakproofness of water-stop；There are gaps between second stationary ring 62 and axle sleeve 2, can make Cooling water pair the second stationary ring 61 and the second fully flushing and cooling of rotating ring 61.
As further improvement of these options, first spring 33 and second spring 63 are multiple springs form, Pressure is uniform on sealing surface, is not influenced by diameter of axle variation；First spring 33 designs for silent oscillation, due to 31 He of the first rotating ring The mating reaction of first stationary ring 61, cooperation O-ring separate medium and the first spring 33, avoid the first spring 33 by medium corruption Erosion or particle are stuck；First spring base 34 is an integral structure with gland 4, can be made processing and be assembled simpler, saving Production cost and use cost；The integrated mechanical sealing is by axle sleeve 2, the first rotating ring 31, the first stationary ring 32, stationary seat, One spring 33, gland 4, the second stationary ring 62, the second rotating ring 61, second spring 63, the assembly of second spring seat 64 obtain, and can simplify Assembly and replacement step, ensure leakproofness, the service life for contributing to prolonged mechanical to seal.
The cooling nozzle injects cooling-lubricant, and the cooling-lubricant is made of the raw material of following weight percent： Zinc pyrithione 0.04%, propene carbonate 0.12%, diglycidylaniline 0.1%, magnesium stearate 0.06%, D-sorbite are sweet Oleate 0.07%, plant modified materials 1.5%, surplus are water；The preparation method of the plant modified materials is：By tamarind seed, Chinese scholartree Rice, the root of Dahurain angelica distinguish levigation to dry be 9% to water content after, by weight 4:1:1 mixing, is being equivalent to 5 times of mass concentrations of its weight It is extracted to substitute within every 2 minutes cycle in 60% alcohol with the frequency of 24.5kHz, extracting solution is obtained after twenty minutes, recycles second Alcohol is concentrated into the 1/10 of its volume, and the chlorinated paraffin, 1.5% rosin, 0.5% phosphorus for being equivalent to its weight 4.5% is then added Sour sodium, 0.25% alkaline earth metal sulfonate, be stirred to react 35 minutes and obtain under conditions of temperature is 65 DEG C.
The cooling-lubricant disperses evenly and stably, and can effectively absorb the micro H that unreacted enters the pump housing2S and CO2, in water There is preferable mobility in sealing area, will not be adhered in water-stop region, high lubricating effect, can effectively radiate, energy Absorption abrasion defective material is simultaneously taken out of, protects the materials such as rotating ring and stationary ring tungsten carbide not corroded, effectively slows down its wear extent, extends Its service life.
The rational design of its 2 structure of bottom bracket axle can make integrated mechanical sealing form the entirety of a complete seal, be situated between Matter end forms radial seal by O-ring and impeller hub, solves the end due to seal face caused by parts machining error Face than press it is non-constant and caused by seal failure the problem of, the setting of axially position hole, can further increase packaging type machinery Seal the stability of installation；And water-stop is used in atmospheric side, it prevents from entering air with the poisonous and harmful media leaks such as corrosivity, Keep sealing effect more preferable, while side medium sealing surface and entire seal chamber can also be cooled down, lubricated and rinsed；Packaging type knot Structure assembly is simple, is easy installation and replacement, the medium for being 40% for conveying solid content, stable, without any leakage, sealing Effect is good, and service life is long, meets industrial production environmental requirement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.

Claims (10)

1. a kind of corrosion-resistant alkali pump integrated mechanical sealing, including axle sleeve, gland and media end on the inside of gland are close Envelope and the atmosphere end water-stop on the outside of gland, gland are equipped with cooling nozzle, which is characterized in that the axle sleeve is set to pump shaft Outside, impeller is set to the end of pump shaft by impeller hub, and the axle sleeve is equipped with the platform connected by inclined surface close to the side of impeller Hierarchic structure, the staircase structural model are equipped with annular groove of the opening towards pump shaft, the step knot close to the side of impeller Structure is equipped with axially position hole, and side of the axle sleeve far from impeller is equipped with convex shape and radial positioning hole；
The media end seals the first stationary ring for including the first rotating ring on staircase structural model and coordinating with the first rotating ring, First stationary ring is fixed by stationary seat and gland, and gland is equipped with the first spring base, and the first rotating ring and the first stationary ring are by the first bullet The first spring compression between spring abutment and stationary seat；
The atmosphere end water-stop includes the second rotating ring, and a side bottom of the separate impeller of gland is fixedly connected with the second stationary ring, is led to Second spring seat is fixed in the radial positioning hole for crossing pump shaft, and the second rotating ring and the second stationary ring pass through second on second spring seat Spring compression.
2. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that the annular groove with O-ring is equipped between impeller hub.
3. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that the packaging type machinery Sealing is used for alkali pump, and the alkali pump includes the pump housing, and sealing cover is equipped between the pump housing and gland, between sealing cover and gland, O-ring is equipped between gland and stationary seat.
4. a kind of corrosion-resistant alkali pump integrated mechanical sealing as claimed in claim 3, which is characterized in that the sealing cover is close The side of impeller hub is set as inclined surface, and the inclined surface extends to media end seal face.
5. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that on the boss structure O-ring is equipped between side and the second rotating ring and second spring seat.
6. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that second stationary ring with There are gaps between axle sleeve.
7. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that first spring and Second spring is multiple springs form.
8. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that first spring base It is an integral structure with gland.
9. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that the packaging type machinery Sealing by axle sleeve, the first rotating ring, the first stationary ring, stationary seat, the first spring, gland, the second stationary ring, the second rotating ring, second spring, Second spring seat assembles to obtain.
10. a kind of corrosion-resistant alkali pump integrated mechanical sealing as described in claim 1, which is characterized in that the cooling nozzle Cooling-lubricant is injected, the cooling-lubricant is made of the raw material of following weight percent：Zinc pyrithione 0.02-0.06%, Propene carbonate 0.06-0.16%, diglycidylaniline 0.08-0.12%, magnesium stearate 0.04-0.08%, D-sorbite are sweet Oleate 0.06-0.08%, plant modified materials 1-2%, surplus are water；The preparation method of the plant modified materials is：By tamarind kind Son, the sophora bud, the root of Dahurain angelica are distinguished after levigation dries and be 8-10% to water content, by weight 4:1:1 mixing, is being equivalent to 5 times of its weight Substitute within every 2 minutes cycle with the frequency of 24.5kHz in the alcohol that mass concentration is 60% to extract it, be extracted after twenty minutes Liquid recycles ethyl alcohol, is concentrated into the 1/10 of its volume, be then added be equivalent to the chlorinated paraffin of its weight 3-6%, 1-2% rosin, The sodium phosphate of 0.2-0.8%, the alkaline earth metal sulfonate of 0.1-0.4% are stirred to react 30- under conditions of temperature is 60-70 DEG C It obtains within 40 minutes.
CN201810470607.4A 2018-05-17 2018-05-17 A kind of corrosion-resistant alkali pump integrated mechanical sealing Withdrawn CN108757550A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111622948A (en) * 2020-06-04 2020-09-04 浙江力高泵业科技有限公司 Rotor pump with built-in internal flow balance type self-cleaning mechanical sealing structure
CN114542327A (en) * 2022-01-25 2022-05-27 大连双龙泵业集团有限公司 Mechanical sealing device for liquid oxygen pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111622948A (en) * 2020-06-04 2020-09-04 浙江力高泵业科技有限公司 Rotor pump with built-in internal flow balance type self-cleaning mechanical sealing structure
CN114542327A (en) * 2022-01-25 2022-05-27 大连双龙泵业集团有限公司 Mechanical sealing device for liquid oxygen pump
CN114542327B (en) * 2022-01-25 2023-06-30 大连双龙泵业集团有限公司 Mechanical sealing device for liquid oxygen pump

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