CN2057979U

CN2057979U - Gap sealing apparatus of relatively rotating machine member

Info

Publication number: CN2057979U
Application number: CN 89214727
Authority: CN
Inventors: 徐春玲
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-23
Filing date: 1989-07-23
Publication date: 1990-06-06

Abstract

Disclosed is a new gap sealing device for the machine components of relative rotation, which comprises an inner and outer liquid blocking plates and a sealing cover of some liquid discharge ditches. The problems of the oil leakage, the water entering, the sand entering and other problems of the speed reducer, the gear box, the bearing body and other machines are solved. The excellent mechanical performance of the machine components is guaranteed and the service life of the machine components is prolonged. The liquid discharge ditches enable the impurity to first enter into the liquid ditches to flow out by guiding before enter into the machine. The lubricating oil leaked in the machine back flows into the machine by the liquid discharge ditches to really play the function of sealing.

Description

Gap sealing apparatus of relatively rotating machine member

The utility model is to be used for two seal arrangements in machinery part surface gap in relative rotation.

The sealability of the seal arrangement that uses is all not ideal enough at present, and obturator is the direct contact type seal arrangement in relative rotation, because contact surface has friction, wearing and tearing are arranged.Sealing can be lost efficacy after a period of time.Certain matching gap is arranged between obturator in relative rotation; the structure of noncontact seal device is reasonable inadequately; poorly sealed; they can not satisfy people's needs; particularly be in when working in the more environment of muddy water, sand dust and the liquid that is corrosive when machinery; impurity usually can be invaded machine intimate in suitable machinery part surface gap in relative rotation, and the lubricant oil of machine intimate also usually can leak out from this gap location, thereby causes the damage in advance of mechanical parts.According to some units statistics, in the bearing that has damaged, have 90% to be because the poorly sealed impurity such as sand dust that causes is invaded, make bearing scrap in advance.

The utility model is exactly for solving because of the intrusion of impurity and the leakage of lubricant oil cause scrapping too early of part, thus life-span of prolonged mechanical part relatively, and save lubricant oil and invented this new seal arrangement.

The utility model is exactly the seal arrangement of being made up of obturator that rotates and the obturator that do not change, the obturator that rotates is enclosed within the outside of the obturator that does not change, just in the front and back of special sealing cover (3) by having adorned inside and outside liquid blocking disk (2), (1) that is fixed on the axle, on inside and outside liquid blocking disk and sealing cover, all excavated the discharge opeing ditch,, the feasible timely in-line arrangement liquid of muddy water, the sand dust ditch that splashes down on obturator can not invade machine intimate thereby getting rid of, and the lubricant oil of machine intimate also can not leak out, and has played real seal action.

The utility model is to realize like this under the situation that this seal arrangement: Fig. 1 do not change for axle rotation sealing cover.The schematic representation of seal arrangement of the present utility model.Outside its endoporus of shell round platform (12) being arranged on the liquid blocking disk (1) is a conical surface or cylinder, and have a discharge opeing ditch (4), one shell round platform is arranged on interior liquid blocking disk (2), endoporus (13) is a conical surface or cylinder, and discharge opeing ditch (11) arranged, on the sealing cover (3), on the end face of the outside frustum or pylon (6) are arranged, and have discharge opeing ditch (5), (7), one frustum or pylon (9) are arranged on the inner side end, and having discharge opeing ditch (8), (10), the frustum (9) on the hole on the outer liquid blocking disk (12) and the sealing cover matches.

Fig. 2 is a schematic representation of the present utility model under the situation of not transferring the sealing cover rotation, one frustum or pylon (5) are arranged on the outer liquid blocking disk (1), have discharge opeing ditch (4) on its outer liquid blocking disk, (6), one frustum or pylon (10) are arranged on the interior liquid blocking disk (2), and have a discharge opeing ditch (9), (11), one shell round platform is arranged on the outside end face of sealing cover (3), its endoporus (12) is a conical surface or cylinder, inside has comprised a discharge opeing ditch (7), one shell round platform is arranged on inner side end, its endoporus (13) is a conical surface or cylinder, there is discharge opeing ditch (8) its inside, frustum (5) on the outer liquid blocking disk (1) and the taper hole (12) on the sealing cover match, and frustum (10) on the interior liquid blocking disk (2) and the taper hole (13) on the sealing cover match.

Such seal arrangement does not have, discusses extraneous liquid, impurity from where next to spattering, can only drop on taper hole (12) outer surface in addition on the outer liquid blocking disk (1) and on discharge opeing ditch (7) outer surface in addition of sealing cover (3), or drop on discharge opeing ditch (4) outer surface in addition of outer liquid blocking disk (1) shown in Figure 2 and on taper hole (12) outer surface in addition of sealing cover (3).Partial impurities will be gone out from landing on the part surface of its land, there are some impurity suitable surperficial under action of gravity in addition to dirty, will in-line arrangement liquid ditch after flowing to the discharge opeing ditch to dirty and can not cross the discharge opeing ditch to the discharge opeing ditch with interior Surface runoff, the discharge opeing ditch has played a water conservancy diversion, this just can have been avoided extraneous liquid, impurity to invade to machine intimate, has played seal action.The Surface runoff of discharge opeing ditch beyond the discharge opeing ditch can only not flow back to machine intimate by in-line arrangement liquid ditch in like manner the lubricant oil of machine intimate also can not be crossed.So the utility model seal arrangement can avoid lubricant oil to external leakage, plays seal action.

Fig. 1: axle rotation and the schematic representation of the utility model " the gap sealed new equipment of parts in relative rotation " under the situation that sealing cover does not change.

The outer liquid blocking disk of 1-; Liquid blocking disk in the 2-; The 3-sealing cover.

Fig. 3: be K portion enlarged view among Fig. 1, wherein (4), (5), (7) are the discharge opeing ditch, and (12) are the taper hole of outer liquid blocking disk, and (6) are the frustum of sealing cover 3.

Fig. 4: be I portion enlarged view among Fig. 1, wherein (8), (10), (11) are the discharge opeing ditch, and (13) are the taper hole of interior liquid blocking disk 2, and (9) are the frustum on the sealing cover 3.

Fig. 2 does not rotate the schematic representation of the utility model " the gap sealed new equipment of parts in relative rotation " under the situation of sealing cover rotation for axle.The outer liquid blocking disk of 1-wherein; Liquid blocking disk in the 2-; The 3-sealing cover.

Fig. 5 is a K portion enlarged view among Fig. 2.Wherein (4), (6), (7) are the discharge opeing ditch, and (12) are the taper hole on the sealing cover 3; (5) be frustum on the outer liquid blocking disk 1.

Fig. 6 is an I portion enlarged view among Fig. 2.Wherein (8), (9), (11) are the discharge opeing ditch, and (13) are the taper hole on the sealing cover 3, and (10) are the frustum on the interior liquid blocking disk 2.

Fig. 1, Fig. 3, Fig. 4 are an embodiment of the present utility model when axle rotation sealing cover does not change, the outer liquid blocking disk of 1-wherein, liquid blocking disk in the 2-, the 3-sealing cover, (12), the taper hole on (13)-liquid blocking disk 1,2, (6), the frustum that matches with taper hole on (9)-sealing cover 3, liquid blocking disk 1,2 all has a shell round platform, the discharge opeing ditch on (4), (5), (7), (8), (10), (the 11)-liquid blocking disk.Spatter next muddy water from the outside, sand dust, impurity, will splash on the outer surface of outer liquid blocking disk 1 and sealing cover 3, flow away along the surface then, or flow to discharge opeing ditch (7), (8), under action of gravity, flow away again, after small part impurity is splashed into inside, also can flow to discharge opeing ditch (4), (5), again under action of gravity, by frustum (6), flow out outside the parts cooperation place of internal taper hole (12), and can not invade parts inside, the lubricant oil that machine intimate leaks out flows into discharge opeing ditch (10), (11), the frustum (9) of under action of gravity, flowing through then, the cooperation place of taper hole (13), flow back to machine intimate, or flow in the discharge opeing ditch (8), under action of gravity, flow back to machine intimate again.This just can make unlikely the leaking out of lubricant oil of machine intimate.And extraneous muddy water, sand dust, impurity can not invaded parts inside, have played real seal action.

Claims

1, a kind of gap sealed new equipment of mechanical parts in relative rotation that is used for is made up of obturator that rotates and the obturator that does not change, and it is characterized in that forming by being fixed on the interior liquid blocking disk (2) on the axle, outer liquid blocking disk (1) and sealing cover (3).The obturator that rotates is enclosed within the surface of the obturator that does not change.

2, the gap sealed new equipment of mechanical parts in relative rotation according to claim 1, it is characterized in that, when axle rotates and sealing cover (Fig. 1), (Fig. 3), (Fig. 4) when not changeing, the endoporus (12) of outer liquid blocking disk (1) is a conical surface or cylinder, and discharge opeing ditch (4) is arranged; When axle is not transferred the sealing cover rotation, as (Fig. 2), (Fig. 5), (Fig. 6), on its outer liquid blocking disk (1) discharge opeing ditch (4), (6) are arranged, a frustum (5) is arranged on it.

3, the gap sealed new equipment of mechanical parts in relative rotation according to claim 1, it is characterized in that, when axle rotates and sealing cover (Fig. 1), (Fig. 3), (Fig. 4) when not changeing, internal surface of the endoporus (13) of liquid blocking disk (2) is the conical surface or cylinder in it.And discharge opeing ditch (11) arranged; When axle does not rotate and sealing cover when rotating, as (Fig. 2), (Fig. 5), (Fig. 6), discharge opeing ditch of liquid blocking disk is (9), (11) and frustum (10) is arranged in it.

4, the gap sealed new equipment of mechanical parts in relative rotation according to claim 1, it is characterized in that, when axle rotates and sealing cover (Fig. 1), (Fig. 3), (Fig. 4) when not changeing, discharge opeing ditch (5), (7), (8), (10) are stamped in its sealing; (Fig. 2), (Fig. 5), (Fig. 6) when axle is not transferred the sealing cover rotation, sealing cover has discharge opeing ditch (7), (8), and the surface of its endoporus (12), (13) is the conical surface or cylinder.