CN209753057U - Cutter shaft sealing structure of tearing machine - Google Patents

Abstract

The utility model discloses a tear machine knife shaft seal structure, including the pivot, locate pivot on the bearing, with bearing complex bearing frame, connect the bearing cap on the bearing frame and connect the gland on the bearing cap, be equipped with the inside first skeleton oil blanket of a lip between bearing cap and the pivot, be equipped with two at least outside second skeleton oil blankets of lip between bearing frame and the pivot, the gland still be equipped with between and the pivot and be used for dirt-proof gland packing. The utility model discloses a tear machine knife shaft seal structure can effectively adapt to the abominable operational environment of tear machine, prevents dust and filtration liquid entering bearing, has improved bearing seal reliability greatly, in addition, the utility model provides a tear machine knife shaft seal structure still has the assembly and dismantles the advantage that convenience, maintainability are good, processing is easier and the machining precision is guaranteed easily.

Description

Cutter shaft sealing structure of tearing machine

Technical Field

The utility model relates to a mechanical seal technical field, more specifically say, relate to a tear machine knife shaft seal structure.

Background

The tearing machine is used as novel crushing equipment and is widely applied to crushing pretreatment of materials such as domestic waste, kitchen waste, dangerous waste, large garbage, garden waste, scrap tires, electronic waste and the like.

Because the tearing machine is in a severe environment for a long time, whether the sealing and dust prevention of the bearing are reliable or not is directly related to the stable use of the tearing machine. At present, the sealing structure of the bearings of the tearing machine on the market is too simple, and the sealing and dustproof capacity is poor, so that the service life of the bearings is shortened.

Therefore, how to solve the problem that the sealing structure of the bearing of the tearing machine is too simple and the sealing effect is poor is a problem to be solved urgently by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a tear machine knife shaft seal structure, this structure can effectively improve sealed effect.

In order to achieve the above object, the present invention provides the following technical solutions:

The utility model provides a tear machine knife shaft seal structure, includes the pivot, locates change epaxial bearing, with bearing complex bearing frame, connect in bearing cap on the bearing frame and connect in gland on the bearing cap, the bearing cap with be equipped with the inside first skeleton oil blanket of a lip between the pivot, the bearing frame with be equipped with the outside second skeleton oil blanket of two at least lips between the pivot, the gland with still be equipped with between the pivot and be used for dirt-proof sealing filler.

Preferably, a first wear-resistant sleeve is arranged between the first framework oil seal and the rotating shaft.

Preferably, the first wear-resistant sleeve is provided with at least two threaded holes for facilitating the disassembly of the first wear-resistant sleeve.

Preferably, the gland is provided with an annular square groove for installing the sealing filler, and the sealing filler is arranged between the gland and the first wear-resistant sleeve.

Preferably, the sealing filler is a carbon fiber filler.

Preferably, the end face of the rotating shaft is provided with a dismounting oil hole which is communicated with the inner ring of the bearing so as to facilitate dismounting of the bearing.

Preferably, a second wear-resistant sleeve is arranged between the second framework oil seal and the rotating shaft.

Preferably, the bearing seat is provided with a dustproof flange at one end far away from the bearing cover, and the second wear-resistant sleeve is provided with a dustproof convex ring opposite to the flange.

Preferably, the distance between the flange and the collar is 1 to 2 mm.

Preferably, the clearance between the bearing cover and the rotating shaft is 1 to 2 mm.

The utility model provides a tearing machine arbor seal structure, through set up the inward first skeleton oil blanket of lip between bearing cap and pivot, can prevent the too fast loss of lubricated liquid from the bearing left side, and set up the gland packing between gland and pivot, can play and prevent the dust from getting into the bearing from the clearance between gland and the pivot, set up the outward second skeleton oil blanket of two lips between pivot and bearing frame, can prevent the dust from getting into from the bearing right side, and prevent the too fast loss of lubricated liquid from the bearing right side, and two second skeleton oil blankets can play the effect of dual protection, thereby take the protection measure of preventing dust and preventing the loss of lubricated liquid to the bearing respectively in both sides of bearing, can effectively adapt to the abominable operational environment of tearing machine, prevent dust and filtration liquid from getting into the bearing, the bearing seal reliability is greatly improved, in addition, the utility model provides a tear machine knife shaft seal structure still has the assembly and dismantles the advantage convenient, that the maintainability is good, processing is easier and the machining precision is guaranteed easily.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a specific embodiment of a sealing structure of a bearing of a tearing machine provided by the present invention.

The bearing comprises a rotating shaft 1, a disassembling oil hole 2, a threaded hole 3, a first wear-resistant sleeve 4, a sealing filler 5, a gland 6, a first framework oil seal 7, a bearing cover 8, a round nut 9, a stop washer 10, a positioning sleeve 11, an oil filling hole 12, a bearing seat 13, a bearing 14, a spring washer 15, a second framework oil seal 16, a flange 17, a convex ring 18 and a second wear-resistant sleeve 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a seal structure of tearing machine bearing, this structure can effectively improve sealed effect.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a sealing structure of a bearing of a tearing machine according to an embodiment of the present invention.

The utility model provides a tearing machine arbor seal structure, including pivot 1, locate pivot 1 last bearing 14, with bearing 14 complex bearing frame 13, connect bearing cap 8 on bearing frame 13, and connect gland 6 on bearing cap 8, be equipped with a lip inside first skeleton oil blanket 7 between bearing cap 8 and the pivot 1, be equipped with two at least outside second skeleton oil blanket 16 of lip between bearing frame 13 and the pivot 1, gland 6 still be equipped with and be used for dirt-proof gland packing 5 between with pivot 1.

Wherein, be equipped with the through-hole that is used for installing bearing 14 on the bearing frame 13, the size of through-hole should cooperate with the outer lane of bearing 14, be equipped with the annular locating surface that carries out axial positioning to the bearing outer lane on the through-hole, the inner circle and the cooperation of pivot 1 of bearing 14 are connected, and should carry out axial positioning to the both ends of bearing 14, in order to guarantee pivot 1 at rotatory in-process, bearing 14 can not axial displacement, bearing cap 8 is used for carrying out axial positioning to the other end of bearing outer lane, thereby with the outer lane chucking of bearing 14 on the annular step face of bearing frame 13. The bearing housing 13 and the bearing cover 8 can be fixed by bolt connection, and the bearing housing 13 should be provided with an oil filling hole 12 for adding lubricating liquid or lubricating grease at a position corresponding to the position where the bearing 14 is installed.

Be equipped with the inside first skeleton oil blanket 7 of a lip between bearing cap 8 and the pivot 1, first skeleton oil blanket 7 is established on the right side of bearing 14, and the lip of first skeleton oil blanket 7 is towards bearing 14, in order to prevent in the bearing 14 that lubricated liquid runs off from the clearance department between bearing cap 8 and the pivot 1, be equipped with two at least outside second skeleton oil blankets 16 of lip between bearing frame 13 and the pivot 1, one side of two second skeleton oil blankets 16 can compress tightly in the step face of bearing frame 13 tip, the opposite side can carry out axial positioning by the spring washer 15 that sets up on bearing frame 13, thereby ensure that two second skeleton oil blankets 16 can not slide for pivot 1.

Two second skeleton oil seals 16 establish the left side at bearing 14, because the operational environment of tearing machine is comparatively abominable, set up two lip second skeleton oil seals 16 outwards between bearing frame 13 and bearing 14, can play and prevent that the dust in the external environment from getting into bearing 14, and two lip second skeleton oil seals 16 outwards can play the effect of duplicate protection, and simultaneously, two lip outside second skeleton oil seals 16 can also play and prevent the lubricating oil in the bearing 14 from the effect that the left side runs off.

Gland 6 still is equipped with between 1 with the pivot and is used for dirt-proof gland packing 5, because the lip of first skeleton oil blanket 7 is inside, the dust probably enters into near first skeleton oil blanket 7 from the clearance between gland 6 and the pivot 1, and then passes through first skeleton oil blanket 7 and get into in the bearing 14, consequently, the gland packing 5 of setting between gland 6 and pivot 1 can play dirt-proof effect to further protected bearing 14 moving smoothness nature.

The utility model provides a cutter shaft sealing structure of a tearing machine, through arranging a lip inward first framework oil seal 7 between a bearing cover 8 and a rotating shaft 1, the excessive loss of lubricating liquid from the left side of a bearing 14 can be prevented, and a sealing filler 5 is arranged between a gland 6 and the rotating shaft 1, the dust can be prevented from entering the bearing 14 from a gap between the gland 6 and the rotating shaft 1, two lip outward second framework oil seals 16 are arranged between the rotating shaft 1 and a bearing seat 13, the dust can be prevented from entering from the right side of the bearing 14, the excessive loss of the lubricating liquid from the right side of the bearing 14 can be prevented, and the two second framework oil seals 16 can play a double protection effect, thereby the protection measures of preventing dust and the loss of the lubricating liquid are respectively taken at the two sides of the bearing 14, the bad working environment of the tearing machine can be effectively adapted, the dust and the percolate can be prevented from entering the bearing 14, the bearing 14 sealing reliability has been improved greatly, in addition, the utility model provides a tear machine knife shaft seal structure still has the assembly and dismantles the advantage that convenience, maintenance performance are good, processing is easier and the machining precision is guaranteed easily.

On the basis of above-mentioned embodiment, when considering first skeleton oil blanket 7 and pivot 1 direct contact, pivot 1 is at the pivoted in-process, first skeleton oil blanket 7 can lead to the fact wearing and tearing to pivot 1, lead to the life of pivot 1 to shorten, therefore, can set up first wear-resisting cover 4 between first skeleton oil blanket 7 and pivot 1, first wear-resisting cover 4 sets up simultaneously between gland 6 and pivot 1, thereby alright set up sealing filler 5 between gland 6 and first wear-resisting cover 4, at pivot 1 pivoted in-process, first skeleton oil blanket 7 just directly contacts with first wear-resisting cover 4, thereby play the effect of protection pivot 1.

On the basis of the above embodiment, first wear-resisting cover 4 needs to rotate along with pivot 1, therefore, should be interference fit between first wear-resisting cover 4 and the pivot 1, need dismantle the change after considering that first wear-resisting cover 4 damages in the use, for the dismantlement of making things convenient for first wear-resisting cover 4 to change, can be equipped with two at least screw holes 3 of being convenient for dismantle it on first wear-resisting cover 4, two screw holes 3 set up the outer terminal surface at first wear-resisting cover 4, and the axis of two screw holes 3 should be parallel with the axle center of pivot 1, so that when needing to dismantle first wear-resisting cover 4 and change, twist two bolts respectively in two screw holes 3, thereby through exerting the pulling force to the bolt, pull down first wear-resisting cover 4 from pivot 1, the convenience of first wear-resisting cover 4 dismantlement change has been improved greatly.

On the basis of the above-described embodiment, in consideration of the manner in which the seal packing 5 is disposed on the gland 6, it is preferable that an annular square groove for mounting the seal packing 5 be provided on the gland 6, and the seal packing 5 be filled in the annular square groove, and it is obvious that the seal packing 5 should be disposed between the gland 6 and the first wear-resistant sleeve 4 to play a role of dust prevention.

On the basis of the above embodiment, in consideration of the material selection of the sealing filler 5, it is preferable that the sealing filler 5 is a carbon fiber filler, which is widely used as a filling sealing material and has excellent chemical resistance and heat resistance, and thus is very suitable for the severe working environment of the tearing machine.

On the basis of the above embodiment, considering that the rotating shaft 1 and the bearing inner ring are also in interference fit, the bearing inner ring is detached from the bearing 14, so that the problem of inconvenience in detachment is solved, therefore, the end surface of the rotating shaft 1 can be provided with the oil hole 2 communicated with the bearing inner ring so as to facilitate detachment of the bearing 14, when the inner ring of the bearing 14 is detached from the rotating shaft 1 as required, lubricating oil can be injected into the oil hole 2, the lubricating oil can flow between the bearing inner ring and the rotating shaft 1 along the oil hole 2, and a layer of oil film is formed between the bearing inner ring and the rotating shaft 1, so that convenience in detaching the bearing inner ring from the rotating shaft 1 is improved.

On the basis of any of the above embodiments, considering that the second framework oil seals 16 are in direct contact with the rotating shaft 1, in the rotating process of the rotating shaft 1, the two second framework oil seals 16 can cause abrasion to the rotating shaft 1, and therefore, the second wear-resistant sleeve 19 can be arranged between the second framework oil seals 16 and the rotating shaft 1, and the effect of protecting the rotating shaft 1 can also be achieved. The one end of the wear-resisting cover 19 of second can hug closely the location shoulder of pivot 1 and locate on pivot 1, the other end of the wear-resisting cover 19 of second can hug closely with the inner circle of bearing 14, thereby, the wear-resisting cover 19 of second can also play the effect of carrying out axial positioning to the bearing inner circle, the other end of bearing inner circle can carry out axial positioning by locating the position sleeve 11 on the pivot 1, position sleeve 11 carries out axial positioning by screwing up round nut 9 in pivot 1, thereby can realize the axial positioning to the bearing inner circle both sides, for preventing that round nut 9 is not hard up, still can set up lock washer 10 on round nut 9.

In addition to the above embodiments, considering that the working environment of the tearing machine is severe, in order to prevent a large amount of dust from entering the vicinity of the second framework oil seal 16 from the large gap between the bearing seat 13 and the rotating shaft 1, and further affects the rotational fit between the second framework oil seal 16 and the second wear sleeve 19, there is a possibility that dust enters from the left side of the bearing 14 to affect the normal operation of the bearing 14, and therefore, a flange 17 for dust protection may be provided at the end of the bearing seat 13 remote from the bearing cap 8, and a collar 18 for dust protection opposite the flange 17 may be provided on the second wear sleeve 19, by providing the flange 17 on the bearing housing 13 and the collar 18 on the second wear sleeve 19 opposite the flange 17, the clearance between the bearing housing 13 and the shaft 1 is greatly reduced, thereby playing the effect of preventing large granule impurity from getting into, further having improved sealed dirt-proof effect.

On the basis of the above embodiment, considering the setting of the size of the gap between the flange 17 and the convex ring 18, the gap between the flange 17 and the convex ring 18 should not be too large or too small, the dustproof effect is reduced due to too large gap, and the normal rotation of the rotating shaft 1 is affected due to the vibration of the rotating shaft 1 with a certain amplitude during the rotation, and preferably, the distance between the flange 17 and the convex ring 18 is 1 to 2 mm.

In addition to the above-described embodiments, in order to further improve the reliability of sealing the bearing 14, in consideration of the fact that the gap between the bearing cover 8 and the bearing 14 is large, in order to avoid the lubricating fluid on the bearing 14 from flowing out too quickly from the gap between the bearing cover 8 and the bearing 14, the gap between the bearing cover 8 and the bearing 14 may be set to a small gap, and preferably, the gap between the bearing cover 8 and the rotating shaft 1 is 1 to 2 mm.

To sum up, the utility model provides a tear machine knife shaft seal structure has adopted a plurality of skeleton oil seals, booth clearance and has added the mode of the sealed combination of packings 5, can effectively adapt to the abominable operational environment of tear machine, prevents dust and filtration liquid entering bearing 14, has improved sealed reliability greatly, and has simultaneously the assembly and dismantle convenient, the maintainability good, process a great deal of advantage easy and that the machining precision is guaranteed more easily.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above the utility model provides a tear machine knife shaft seal structure introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. The utility model provides a tear machine knife shaft seal structure, includes pivot (1), locates bearing (14) on pivot (1), with bearing (14) complex bearing frame (13), connect in bearing cap (8) on bearing frame (13) and connect in gland (6) on bearing cap (8), its characterized in that, bearing cap (8) with be equipped with an inside first skeleton oil blanket (7) of lip between pivot (1), bearing frame (13) with be equipped with two at least outside second skeleton oil blanket (16) of lip between pivot (1), gland (6) with still be equipped with between pivot (1) and be used for dirt-proof sealing filler (5).

2. The cutter shaft sealing structure of the tearing machine as claimed in claim 1, wherein a first wear-resistant sleeve (4) is arranged between the first framework oil seal (7) and the rotating shaft (1).

3. The tearing machine knife shaft sealing structure according to claim 2, characterized in that the first wear-resistant sleeve (4) is provided with at least two threaded holes (3) for facilitating the detachment thereof.

4. The tearing machine knife shaft sealing structure according to claim 3, characterized in that the gland (6) is provided with an annular square groove for installing the sealing packing (5), and the sealing packing (5) is arranged between the gland (6) and the first wear-resistant sleeve (4).

5. The tearer knife shaft seal structure according to claim 4, characterized in that the seal packing (5) is a carbon fiber packing.

6. the cutter shaft sealing structure of the tearing machine according to claim 1, characterized in that a disassembly oil hole (2) communicated with the inner ring of the bearing (14) to facilitate the disassembly of the bearing (14) is arranged on the end surface of the rotating shaft (1).

7. The tearing machine knife shaft sealing structure according to any one of the claims 1 to 6, characterized in that a second wear-resistant sleeve (19) is arranged between the second framework oil seal (16) and the rotating shaft (1).

8. A tearer knife shaft seal structure according to claim 7, characterized in that the bearing seat (13) is provided with a flange (17) for dust protection at the end remote from the bearing cap (8), and the second wear sleeve (19) is provided with a collar (18) opposite the flange (17) for dust protection.

9. The slitter-shaft sealing structure according to claim 8, wherein a distance between the flange (17) and the collar (18) is 1 to 2 mm.

10. The slitter-shaft sealing structure according to claim 9, wherein a gap between the bearing cap (8) and the rotation shaft (1) is 1 to 2 mm.