CN205714922U - Water pump seal of automobile - Google Patents

Abstract

The utility model discloses a kind of water pump seal of automobile, including rotating part and stationary part, mutually conflict in rotating part one end and stationary part one end, rotating part includes that corrugated tube, corrugated tube two ends are arranged with spring base, and corrugated tube end is provided with the flange for limiting spring base position and flange, spring it is provided with between spring base, stationary part includes the stationary ring being made up of carborundum, it is characterized in that: described corrugated tube one end inwall is provided with caulking groove, and in caulking groove, card is embedded with graphite annulus.This water pump seal of automobile, can preferably reduce abrasion between the two, improves the life-span.

Description

Water pump seal of automobile

Technical field

This utility model relates to mechanical seal, particularly to a kind of water pump seal of automobile.

Background technology

At present, automobile engine cooling water pump generally uses double carborundum water seal and seals, but double carborundum water seal Rotating ring and stationary ring are all made up of carbofrax material, owing to material is identical, the most dry when relatively rotating between the two The most serious abrasion can be produced during friction, affect the life-span of water pump seal of automobile.

At present, the Chinese patent of Publication No. CN 203948336 U discloses the double carbonization of a kind of anti-dry friction auto pump Silicon water seal, its retainer, auxiliary seal ring, rotating ring, stationary ring, upper spring seat, corrugated tube, spring, lower spring cup and ripple Base and grease, friction pair is made up of rotating ring and stationary ring, and material is carborundum or composite material of silicon carbide, Qi Zhong The sealing surface of stationary ring is provided with an annular groove, is filled with grease in annular groove.This anti-dry friction auto pump Although double carborundum water seals can improve the anti-wear performance between rotating ring and stationary ring to a certain extent, but is using one section After time, grease can gradually pollute, reduce, it is impossible to playing permanent lubrication between rotating ring and stationary ring, water seal Service life is the most relatively low.

Utility model content

The deficiency existed for prior art, the purpose of this utility model is to provide a kind of water pump seal of automobile, can be relatively Reduce well abrasion between the two, improve the life-span.

Above-mentioned technical purpose of the present utility model has the technical scheme that a kind of auto pump water Envelope, mutually conflicts including rotating part and stationary part, rotating part one end and stationary part one end, and rotating part includes corrugated tube, corrugated tube Two ends are arranged with spring base, and corrugated tube end is provided with the flange for limiting spring base position and flange, arrange between spring base There are spring, stationary part to include the stationary ring being made up of carborundum, it is characterized in that: described corrugated tube one end inwall is provided with caulking groove, In caulking groove, card is embedded with graphite annulus.

By technique scheme, the friction between original carborundum and carborundum is changed into graphite annulus and by carbonization Friction between silicon stationary ring, owing to graphite material is softer, anti-wear performance preferably and has certain lubricity, at graphite annulus Less with the abrasion occurred during carborundum generation phase mutual friction, it is simple to increase the life-span between the two when phase mutual friction.Simultaneously Flange and arranging of flange can avoid spring base to slide on corrugated tube, during to ensure that spring is between spring base Stability.

Preferably, described graphite annulus is made up of car matter graphite, and stationary ring is by the carbon that density is 3 ~ 3.06 grams every cubic centimetre SiClx is made.

By technique scheme, graphite annulus uses car matter graphite stationary ring to use the carborundum of this density, in reality Test has more preferable anti-wear performance relative to the carborundum of other kinds of graphite, color density, has the most wear-resisting Performance.

Preferably, it is in the spring base lower end outside graphite annulus and is provided with spacing ring.

By technique scheme, owing to corrugated tube is typically made up of elastomeric material, there is certain elasticity, work as graphite annulus Cannot ensure when being arranged on corrugated tube whether graphite annulus is installed to put in place, spring base arranges spacing ring, can be to corrugated tube The end installing graphite annulus carries out spacing, reduces the deformation space of corrugated tube.To reach to improve the purpose of graphite annulus installation progress.

Preferably, described stationary ring excircle and the one end away from graphite annulus are coated with rubber cushion.

By technique scheme, stationary ring is outside equipped with rubber cushion, can increase between stationary ring and shell bores Sealing property.Stationary ring is played a protective effect simultaneously, it is to avoid lead due to deflection between stationary ring and housing when mounted Cause stationary ring is destroyed.

Preferably, the periphery of described rubber cushion is provided with the bulge loop that cross section is circular arc.

By technique scheme, owing to the biggest requirement for precision of sealing area is the highest, add man-hour the most difficult, convex Ring the contact area that can reduce between rubber cushion and shell bores is set, with reduce for shell bores precision want Asking, reduce cost, arranging of bulge loop can increase deformation space simultaneously, it is simple to the installation of stationary ring.The transverse interface of bulge loop is During installing hole contact internal walls on circular arc, bulge loop and housing, the end face of bulge loop is first conflicted with the installing hole on housing and is pressed Contracting, makes bulge loop summit and both sides gradually form a sealing plane.Can occur in the middle part of bulge loop to deform the most uniformly simultaneously, right Bulge loop summit provides a more uniform elastic force so that conflicts between bulge loop and shell bores is more tight, to obtain relatively Good sealing effectiveness.

Preferably, described spring base is provided with the limited block for preventing spring pivotal.

By technique scheme, the arranging of limited block can avoid spring to rotate on spring base the sending out of phenomenon Raw, stable with elastically keeping of keeping that spring provided, it is to avoid because the change of the elastic force of spring causes graphite annulus and stationary ring Between compress degree and deform, cause, when stationary ring or graphite annulus abrasion, non-uniform phenomenon occurs, affect graphite annulus and quiet The life-span of stop ring.

Preferably, described spring base and spring are made by stainless steel material.

By technique scheme, rustless steel has preferable corrosion resistance, and intensity is higher simultaneously, and anti-fatigue ability is also The most prominent, use rustless steel can increase the life-span of spring and spring base as the material of spring base and spring, it is to avoid to make During with, graphite annulus and stationary ring can also use and spring or spring base have damaged the generation of phenomenon.

Preferably, it is provided with in the middle part of described corrugated tube and is easy to segmental arc and vertical section, the segmental arc of corrugated tube homogeneous deformation Opening towards bellows core.

By technique scheme, when corrugated tube is compressed, segmental arc can be extruded by vertical section, makes segmental arc two End deforms in the middle part of corrugated tube, it is to avoid corrugated tube two ends are deformed, and causes corrugated tube two ends can not produce preferably with resistance surface Laminating, affect sealing effectiveness.

Preferably, described corrugated tube is made up of nitrile rubber.

By technique scheme, nitrile rubber has excellent physical and mechanical properties, is not susceptible to oxygen in use process The phenomenons such as change, can improve the life-span that this auto pump oil sealing is overall.

Preferably, described corrugated tube is provided with chamfering away from the end face inwall of graphite annulus.

By technique scheme, chamfering the installation that can facilitate axle is set, arranging of chamfering can also be avoided simultaneously Add the phenomenon producing overlap man-hour at bellows injection moulding, improve machining accuracy.

Accompanying drawing explanation

Fig. 1 is the explosive view of embodiment；

Fig. 2 is the front view after embodiment assembling；

Fig. 3 is the sectional view in Fig. 2 at C-C；

Fig. 4 is the enlarged drawing in Fig. 3 at A；

Fig. 5 is the enlarged drawing in Fig. 3 at B.

Reference: 1, stationary part；2, rotating part；11, stationary ring；12, rubber cushion；121, bulge loop；21, spring base；22, ripple Stricture of vagina pipe；23, spring；24, graphite annulus；211, limited block；212, spacing ring；221, flange；222, segmental arc；223, vertical section； 224, flange；225, chamfering.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail.

This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but As long as all being protected by Patent Law in right of the present utility model.

As shown in Figure 1, Figure 2 and Figure 3, a kind of auto pump oil sealing, including rotating part 2 and stationary part 1, rotating part 2 one end End face and stationary part 1 are mutually conflicted.Rotating part 2 includes that corrugated tube 22, corrugated tube 22 one end are provided with flange 221 and flange 224, Flange 221 and flange 224(are as shown in Figure 5) together with formed one for the mounting groove installing spring base 21, spring base 21 is in In mounting groove, it is to avoid slide.Corrugated tube 22 other end inwall is provided with the caulking groove for installing graphite annulus 24, caulking groove Inside being provided with the graphite annulus 24 being made up of car matter graphite, caulking groove outer sheath is provided with spring base 21, and spring base 21 is away from corrugated tube One end of 22 sections is provided with spacing ring 212(as shown in Figure 4), spacing ring 212 is on caulking groove outer wall, is used for limiting inlay card The deflection of groove, it is to avoid caulking groove occurs bigger deformation in the installation process of graphite annulus 24, and causes graphite annulus 24 to be installed Time due to caulking groove occur bigger deformation cause installation accuracy the most up to standard.The wall thickness of stationary ring between 4 ~ 6 millimeters, graphite annulus Thickness in 2 millimeter, the width of sealing surface when the conflict that can ensure that graphite annulus and stationary ring is so set.

Spring 23, spring 23 and two spring bases 21 it are provided with by the trade mark between the spring base 21 at corrugated tube 22 two ends Be 304 rustless steel make.The limited block 211 preventing spring 23 from rotating on spring base 21 it is provided with on spring base 21, To prevent spring 23 from rotating on spring base 21.Limited block 211 makes spring by the way of spring base 21 is carried out punching press A part of material on seat 21 protrudes to side, so that spring 23 can be positioned by it.

As shown in figures 1 and 3, stationary part 1 includes stationary ring 11 and rubber cushion 12.Rubber cushion 12 is coated on stationary ring 11 excircle And stationary ring 11 is away from one end end face of graphite annulus 24.Stationary ring 11 is made up of carborundum.What during work, carborundum was made is quiet Stop ring 11 and the graphite annulus being made up of car matter graphite are mutually conflicted, and anti-wear performance between the two is preferable, occurs between In the case of dry friction, it is ensured that rub 2 hours and be not damaged by.The density of carborundum is 3 ~ 3.06 grams every cubic centimetre Time, abrasion resistant effect is best.Be provided with the bulge loop 121 that cross section is circular arc on the excircle of rubber cushion 12, bulge loop 121 be arranged on peace The contact area of rubber cushion 12 and shell bores can be reduced during dress, improve sealing property.Corrugated tube 22 is made up of nitrile rubber, Be provided with in the middle part of it be easy to deformation segmental arc 222 and vertical section 223, the opening of segmental arc 222 towards corrugated tube 22 center, when When corrugated tube 22 deforms, segmental arc 222 two ends are to segmental arc 222 middle bent, make outwardly to produce relatively in the middle part of segmental arc 222 Deformation for rule.Avoid corrugated tube 22 when compressed owing to generation irregular deformation affects the sealing of corrugated tube 22 end face Energy.Corrugated tube 22 is provided with chamfering 225 away from one end end face inwall of graphite annulus 24 simultaneously, to avoid carrying out corrugated tube 22 Finning is resulted in during injection molding.

The above is only exemplary embodiment of the present utility model, not for limiting protection model of the present utility model Enclosing, protection domain of the present utility model is determined by appended claim.

Claims (10)

1. a water pump seal of automobile, including rotating part (2) and stationary part (1), rotating part (2) one end and stationary part (1) one end Mutually conflicting, rotating part (2) includes that corrugated tube (22), corrugated tube (22) two ends are arranged with spring base (21), and corrugated tube (22) is held Portion is provided with the flange (221) for limiting spring base (21) position and flange (224), is provided with bullet between two spring bases (21) Spring (23), stationary part (1) includes the stationary ring (11) being made up of carborundum, it is characterized in that: described corrugated tube (22) one end inwall Being provided with caulking groove, in caulking groove, card is embedded with graphite annulus (24).

Water pump seal of automobile the most according to claim 1, is characterized in that: described graphite annulus (24) is made up of car matter graphite, Stationary ring (11) is made up of the carborundum that density is 3 ~ 3.06 grams every cubic centimetre.

Water pump seal of automobile the most according to claim 1, is characterized in that: be in the spring base (21) in graphite annulus (24) outside Lower end is provided with spacing ring (212).

Water pump seal of automobile the most according to claim 1, is characterized in that: described stationary ring (11) excircle and away from graphite One end of ring (24) is coated with rubber cushion (12).

Water pump seal of automobile the most according to claim 4, is characterized in that: be provided with horizontal stroke on the periphery of described rubber cushion (12) It it is the bulge loop (121) of circular arc to cross section.

Water pump seal of automobile the most according to claim 1, is characterized in that: described spring base is provided with for preventing on (21) The limited block (211) that spring (23) rotates.

Water pump seal of automobile the most according to claim 1, is characterized in that: described spring base (21) and spring (23) be not by Rust Steel material is made.

Water pump seal of automobile the most according to claim 1, is characterized in that: described corrugated tube (22) middle part is provided with is easy to ripple The segmental arc (222) of stricture of vagina pipe (22) homogeneous deformation and vertical section (223), the opening of segmental arc (222) is towards in corrugated tube (22) The heart.

Water pump seal of automobile the most according to claim 1, is characterized in that: described corrugated tube (22) is made up of nitrile rubber.

Water pump seal of automobile the most according to claim 9, is characterized in that: described corrugated tube (22) is away from graphite annulus (24) End face inwall be provided with chamfering (225).