CN213017317U - Bearing sealing mechanism and pressing equipment - Google Patents

Abstract

The utility model relates to a bearing sealing mechanism, including seal assembly and first centrifugation piece. The sealing assembly is used for being hermetically and fixedly connected with one end of the bearing seat and is in sealing fit with the rotating shaft, and an accommodating cavity communicated with the interior of the bearing is formed between the sealing assembly and the rotating shaft; the first centrifugal piece is used for being fixedly connected with the rotating shaft, is positioned in the accommodating cavity and is used for guiding airflow to flow towards the bearing when rotating along with the rotating shaft. Therefore, by adopting the bearing sealing mechanism, the first centrifugal piece can guide the air flow to flow towards the bearing when rotating along with the rotating shaft, and the air flow flowing towards the bearing can block lubricating oil or lubricating grease in the bearing from flowing out, so that the bearing can keep lubricating and the service life of the bearing is prolonged. The utility model discloses still relate to a compress tightly equipment.

Description

Bearing sealing mechanism and pressing equipment

Technical Field

The utility model relates to a mechanical seal technical field especially relates to a bearing seal mechanism and compress tightly equipment.

Background

In the moving process of the bearing, relative movement is necessarily generated between the inner ring and the outer ring of the bearing and the rolling bodies, so that friction is generated between moving bodies, a part of mechanical energy is consumed, and heat and abrasion are generated between the inner ring and the outer ring and between the inner ring and the rolling bodies. In order to reduce the friction resistance, slow down the wear rate of the bearing, control the temperature rise of the bearing and improve the service life of the bearing, the lubrication problem of the bearing must be considered in the design of a mechanism using the bearing, and the existing bearing keeps lubrication by adding lubricating oil or lubricating grease into the bearing.

Because lubricating oil or lubricating grease is added into the bearing, the bearing needs to be sealed. However, the sealing effect of the existing bearing sealing mechanism is poor, so that lubricating oil or lubricating grease is easy to leak or external impurities enter, and the service life of the bearing is affected.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a bearing sealing mechanism and a pressing device with good sealing effect to solve the problem of poor sealing effect of the existing bearing.

A bearing seal mechanism comprising:

the sealing assembly is used for being hermetically and fixedly connected with one end of the bearing seat and is in sealing fit with the rotating shaft, and an accommodating cavity communicated with the interior of the bearing is formed between the sealing assembly and the rotating shaft; and

the first centrifugal piece is used for being fixedly connected with the rotating shaft, is positioned in the accommodating cavity and is used for guiding airflow to flow towards the bearing when rotating along with the rotating shaft.

Therefore, by adopting the bearing sealing mechanism, the first centrifugal piece can guide the air flow to flow towards the bearing when rotating along with the rotating shaft, and the air flow flowing towards the bearing can block lubricating oil or lubricating grease in the bearing from flowing out, so that the bearing can keep lubricating and the service life of the bearing is prolonged.

In one embodiment, the sealing assembly includes a first sealing element and a second sealing element, the first sealing element is used for being hermetically and fixedly connected to the bearing seat, the second sealing element is used for being hermetically connected with a rotating shaft, the second sealing element is located on one side of the first sealing element, which is far away from the bearing seat, and the first sealing element and the second sealing element are arranged at intervals along the axial direction of the rotating shaft, so that a tortuous airflow channel communicating the accommodating cavity with the outside is formed between the first sealing element and the second sealing element.

In one embodiment, the first sealing element comprises a connecting part and at least one first sealing bulge, the connecting part is used for being connected with the bearing seat in a sealing mode, and the at least one first sealing bulge is fixedly connected to one side, away from the bearing seat, of the connecting part;

the second sealing element is provided with at least one first groove, each first sealing bulge extends into one corresponding first groove, and a gap exists between each first sealing bulge and each first groove to form the zigzag airflow channel.

In one embodiment, the bearing sealing mechanism further comprises a locking member, the locking member is used for fixedly connecting the rotating shaft, and the locking member abuts against one side of the second sealing member, which is far away from the first sealing member, so that the second sealing member is fixed relative to the rotating shaft.

In one embodiment, the sealing assembly includes a third sealing element, the third sealing element is connected to one end of the bearing seat in a sealing and fixed mode and is in sealing abutment with the rotating shaft, and the accommodating cavity is formed between the third sealing element and the rotating shaft.

In one embodiment, the first centrifugal part includes a body part fixedly connected to the rotating shaft and a centrifugal structure fixedly connected to a side of the body part away from the rotating shaft for guiding the airflow towards the sealing assembly and the bearing respectively when rotating with the rotating shaft.

In one embodiment, the centrifugal structure includes a first centrifugal portion and a second centrifugal portion, the first centrifugal portion and the second centrifugal portion are both fixedly connected to a side of the body portion away from the rotating shaft, and the first centrifugal portion and the second centrifugal portion are sequentially arranged in an axial direction of the rotating shaft, the first centrifugal portion is configured to guide the airflow to flow toward the sealing assembly when rotating with the rotating shaft, and the second centrifugal portion is configured to guide the airflow to flow toward the bearing when rotating with the rotating shaft.

In one embodiment, the first centrifugal portion includes at least two first protrusions, the at least two first protrusions are sequentially arranged along the axial direction of the rotating shaft, and each first protrusion is obliquely arranged toward a direction away from the second centrifugal portion.

In one embodiment, the second centrifugal portion includes at least two second protrusions, the at least two second protrusions are sequentially arranged along the axial direction of the rotating shaft, and each second protrusion is obliquely arranged toward a direction away from the first centrifugal portion.

The utility model provides a compressing apparatus, includes bearing frame, bearing and pivot and as above bearing sealing mechanism, the bearing set up in the bearing frame, the pivot support in the bearing, the bearing frame is followed the relative both sides of pivot axial direction all are provided with bearing sealing mechanism.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings 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 some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a compacting apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a bearing sealing mechanism of the compacting apparatus shown in FIG. 1;

FIG. 3 is a schematic view of the construction of a first centrifuge of the compacting apparatus shown in FIG. 1;

fig. 4 is a schematic structural view of a bearing sealing mechanism of the pressing device shown in fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, a pressing apparatus according to an embodiment of the present invention includes a bearing seat 11, a bearing 12, and a rotating shaft 13.

The bearing 12 is disposed in the bearing housing 11, and the rotating shaft 13 is supported by the bearing 12.

Further, the pressing device comprises two bearing housings 12 and at least two bearings 12. The two bearing blocks 11 are arranged at intervals in the vertical direction, each bearing block 11 is at least provided with one bearing 12, the rotating shaft 13 is arranged lengthways in the vertical direction, and the two opposite ends of the rotating shaft 13 are respectively arranged in the bearings 12 of the two bearing blocks 11, so that the rotating shaft 13 can rotate around a rotating axis parallel to the vertical direction.

In some embodiments, the pressing device further includes a frame 14 and a pressing assembly, the bearing seat 11 is disposed on the frame 14, and the pressing assembly is in transmission connection with the rotating shaft 13 and is configured to reciprocate in the vertical direction along with the rotation of the rotating shaft 13.

In practical application, the rotating shaft 13 is provided with an external thread, and the pressing assembly is in threaded connection with the rotating shaft 13 so as to move in a reciprocating manner along the vertical direction in the rotating process of the rotating shaft 13 around the rotating axis.

In some embodiments, the pressing assembly includes a nut 152, a first connecting plate 154, an intermediate assembly 156, and a pressing head 158, the nut 152 is screwed to the rotating shaft 13, the first connecting plate 154 is fixedly connected to the nut, the intermediate assembly 156 is connected to the frame 14 in a vertically reciprocating manner and is fixedly connected to the first connecting plate 154, and the pressing head 158 is fixedly connected to an end of the intermediate assembly 156 away from the first connecting plate 154 for pressing the material during reciprocating movement with the intermediate assembly 156.

It should be noted that, in practical applications, the rotating shaft 13 and the nut 152 are of a conventional ball screw structure, and are well known to those skilled in the art, and will not be described herein again.

In some embodiments, one bearing block 11 is fixedly connected to the frame 14, and the other bearing block 11 is movably connected to the frame 14 in the vertical direction. Thus, one end of the rotating shaft 13 is fixed relative to the frame 14 in the vertical direction, and the other end of the rotating shaft 13 is movable relative to the frame 14 in the vertical direction, so that the rotating shaft 13 is prevented from generating heat to cause the rotating shaft 13 to move in the vertical direction.

Further, the pressing apparatus further includes a second connecting plate 16, the second connecting plate 16 is connected to the frame 14 in a vertically reciprocatable manner, and the other bearing housing 11 is fixedly connected to the second connecting plate 16 in a vertically reciprocatable manner.

In practical applications, the bearing seat 11 fixed relative to the frame 14 in the vertical direction is located above the other bearing seat 11, i.e. the top end of the rotating shaft 13 is disposed in the bearing 12 in the bearing seat 11 fixed relative to the frame 14, and the bottom end of the rotating shaft 13 is disposed in the bearing 12 in the bearing seat 11 capable of reciprocating in the vertical direction.

In some embodiments, the pressing device further comprises a third connecting plate 17, the third connecting plate 17 is fixedly connected to the frame 14, and the bearing seat 11 is fixedly connected to the third connecting plate 17.

In some embodiments, the pressing device further includes a driving member 182, and the driving member 182 is fixedly connected to the frame 14 and is in transmission connection with the rotating shaft 13 to drive the rotating shaft 13 to rotate around the rotating axis. Further, the compacting apparatus further includes a coupling 184, and the coupling 184 is connected between the rotating shaft 13 and the driving member 182.

In practice, the driving member 182 is fixedly connected to the third connecting plate 17. Specifically, the drive 182 is a servo motor.

Referring to fig. 2-4, in some embodiments, the compaction apparatus further includes a bearing sealing mechanism including a seal assembly and the first centrifuge 22. The sealing assembly is hermetically and fixedly connected to the bearing seat 11 and is in sealing fit with the rotating shaft 13, a receiving cavity 212 communicating with the inside of the bearing 12 is formed between the sealing assembly and the rotating shaft 13, and the first centrifugal piece 22 is fixedly connected to the rotating shaft 13 and is located in the receiving cavity 212 for guiding the airflow to flow towards the bearing 12 when rotating along with the rotating shaft 13.

In this way, by adopting the above-mentioned bearing sealing mechanism, the first centrifugal member 22 guides the air flow to flow toward the bearing 12 when rotating with the rotating shaft 13, and the air flow flowing toward the bearing 12 hinders the lubricating oil or grease in the bearing 12 from flowing out, so that the bearing 12 is kept lubricated, and the service life of the bearing 12 is prolonged.

In practical application, the bearing sealing mechanisms are arranged on two opposite sides of each bearing seat 11 in the vertical direction.

Referring to fig. 2, in some embodiments, the sealing assembly includes a first sealing member 21 and a second sealing member 22, the first sealing member 21 is sealingly and fixedly connected to the bearing seat 11, the second sealing member 22 is sealingly connected to the rotating shaft 13, the second sealing member 23 is located at a side of the first sealing member 21 away from the bearing seat 11, and the first sealing member 21 and the second sealing member 23 are axially spaced apart from each other along the rotating shaft 13, so as to form a zigzag air flow channel communicating the accommodating cavity 212 with the outside between the first sealing member 21 and the second sealing member 23.

First sealing member 21 and pivot 13 form the holding chamber 212 with the inside intercommunication of bearing 12, and holding chamber 212 communicates with the external world through tortuous air flow channel, bearing 12 is inside to communicate with the external world through holding chamber 212 and air flow channel, and tortuous passageway is compared in sharp passageway, external impurity is difficult to pass through, consequently the tortuous passageway that first sealing member 21 and second sealing member 23 formed has the separation effect, sealing effect promptly, prevent that external impurity from getting into inside the bearing 12, tortuous passageway also can hinder the inside lubricating oil or the lubricating grease of bearing 12 to a certain extent simultaneously and leak, guarantee the lubrication of bearing 12 and improve the life of bearing 12.

It should be explained that, when the rotating shaft 13 is supported by the bearing 12, both sides of the bearing 12 in the axial direction of the rotating shaft 13 can communicate with the outside, and if the above-mentioned first sealing member 21 and second sealing member 23 are provided on one side of the bearing housing 11, the corresponding side of the bearing 12 communicates with the outside through the accommodating chamber 212 and the air flow passage.

Further, the first centrifugal member 22 serves to guide the air flow toward the second seal member 23 and the bearing 12, respectively, when rotating with the rotating shaft 13.

When the first centrifugal member 22 rotates along with the rotating shaft 13, the airflow guided to the second sealing member 23 enters the airflow channel formed by the first sealing member 21 and the second sealing member 23, and further prevents external impurities from entering the accommodating cavity 212 and the inside of the bearing 12. In this way, lubrication of the bearing 12 can be further ensured and the service life of the bearing 12 can be further improved.

In some embodiments, the first sealing member 21 includes a connecting portion 211 and at least one first sealing protrusion 213, the connecting portion 211 is connected to the bearing seat 11 in a sealing manner, and the at least one first sealing protrusion 213 is fixedly connected to a side of the connecting portion 211 away from the bearing seat 11.

Further, the second sealing member 23 has at least one first groove 231, each first sealing protrusion 213 extends into a corresponding first groove 231, and a gap exists between the first sealing protrusion 213 and the first groove 231 to form the above-mentioned zigzag air flow channel.

In some embodiments, the shape of the first sealing protrusion 213 is the same as that of the first groove 231, so that the gap between the first sealing protrusion 213 and the first groove 231 is uniformly distributed by adjusting the protrusion of the first sealing protrusion 213 into the first groove 231, thereby ensuring the sealing and protecting effect of the airflow channel.

Further, the cross section of the first sealing protrusion 213 is rectangular, and the cross section corresponding to the first groove 231 is also rectangular, so that the bent position of the bent airflow channel formed by the first sealing protrusion 213 and the first groove 231 is a right-angle bend.

It should be noted that, the first sealing member 21, the second sealing member 23 and the first centrifugal member 22 are substantially annular and are all disposed coaxially with the rotating shaft 13, and the aperture of the accommodating cavity 212 of the first sealing member 21 is larger than the diameter of the rotating shaft 13, so that after the first sealing member 21 is hermetically and fixedly connected to the bearing seat 11, a space for installing the first centrifugal member 22 exists between the rotating shaft 13 and the accommodating cavity 212, and the inside of the bearing 12 in the bearing seat 11 is communicated with the accommodating cavity 212.

In some embodiments, the first centrifugal member 22 includes a body portion 222 and a centrifugal structure, the body portion 222 is fixedly connected to the rotating shaft 13, and the centrifugal structure is fixedly connected to a side of the body portion 222 away from the rotating shaft 13 for guiding the airflow toward the second sealing member 23 and the bearing 12, respectively, when rotating with the rotating shaft 13.

Further, the centrifugal structure includes a first centrifugal portion 224 and a second centrifugal portion 226, the first centrifugal portion 224 and the second centrifugal portion 226 are both fixedly connected to a side of the body portion 222 away from the rotating shaft 13, and the first centrifugal portion 224 and the second centrifugal portion 226 are sequentially arranged in an axial direction of the rotating shaft 13, the first centrifugal portion 224 is used for guiding the airflow to flow toward the second sealing member 23 when rotating with the rotating shaft 13, and the second centrifugal portion 226 is used for guiding the airflow to flow toward the bearing 12 when rotating with the rotating shaft 13.

In practice, the first centrifugal portion 224 is closer to the second seal 23 than the second centrifugal portion 226, the first centrifugal portion 224 is configured to direct the airflow toward the second seal 23 when rotating with the rotating shaft 13, the second centrifugal portion 226 is closer to the bearing 12 than the first centrifugal portion 224, and the second centrifugal portion 226 is configured to direct the airflow toward the bearing 12 when rotating with the rotating shaft 13.

The first and second eccentric portions 224 and 226 are used for guiding the air flow toward the second seal 23 and the bearing 12 when rotating with the rotating shaft 13, and the first and second eccentric portions 224 and 226 are located outside the body portion 222. if the first eccentric portion 224 is closer to the bearing 12 than the second eccentric portion 226, but the first eccentric portion 224 is used for guiding the air flow toward the second seal 23 when rotating with the rotating shaft 13, then the second eccentric portion 226 is closer to the second seal 23 than the first eccentric portion 224, and the second eccentric portion 226 is used for guiding the air flow toward the bearing 12 when rotating with the rotating shaft 13, so that the air flows formed by the rotation of the first and second eccentric portions 224 and 226 will affect each other, thereby affecting the sealing effect.

In order to ensure that the air flow generated when the first and second centrifugal portions 224 and 226 rotate effectively hinders the outflow of the lubricating oil or grease inside the bearing 12 and the entrance of foreign substances from the outside, the sealing portion near the second seal 23 or the bearing 12 needs to guide the air flow toward the corresponding structure when rotating.

In some embodiments, the first centrifugal portion 224 includes at least two first protrusions, which are sequentially arranged along the axial direction of the rotating shaft 13, and each of the first protrusions is obliquely arranged toward a direction away from the second centrifugal portion 226 to guide the airflow toward the second sealing member 23 when rotating with the rotating shaft 13.

Because the first protrusion is disposed obliquely with respect to the horizontal plane, the first protrusion is fixedly connected to one side of the main body 222 away from the rotating shaft 13, the main body 222 and the rotating shaft 13 are disposed coaxially, and meanwhile, a rotating radius of one end of the first protrusion away from the main body 222 is larger than a rotating radius of one end of the first protrusion close to the main body 222, according to bernoulli's principle, when the flow is equal in height, the flow rate is high, and the pressure is low. When the first protrusion rotates along with the rotating shaft 13, the linear velocity of the end of the first protrusion far from the body portion 222 is greater, so that a pressure difference is generated between the end of the first protrusion far from the body portion 222 and the other end of the first protrusion, an air flow is formed under the action of the pressure difference, and the air flow flows from the end of the first protrusion close to the body portion 222 to the end of the first protrusion far from the body portion 222.

Referring to fig. 2, the first protrusion extends away from the body portion 222 and is inclined toward the second sealing member 23, so that the airflow generated by the first protrusion is transmitted from the bottom of the first protrusion to the top of the first protrusion, and the airflow is guided toward the second sealing member 23.

Meanwhile, it should be explained that, the airflow is guided to flow towards the second sealing member 23, rather than being guided to flow towards the second sealing member 23 in the vertical direction, the first protrusion is inclined relative to the horizontal plane, and the airflow direction is also inclined relative to the horizontal direction, so that only the airflow needs to be ensured to flow towards the second sealing member 23.

In order to ensure that the turning radii of the first protrusion away from the body portion 222 and the turning radii of the first protrusion near the two ends of the body portion 222 are different, i.e. it is required to ensure that the first protrusion has an outer surface inclined with respect to the horizontal plane, the first protrusion is configured as a protrusion having a tip and inclined with respect to the horizontal plane.

In addition, set up two at least first archs and can produce bigger air current when rotating the first protruding rotation of drive, improve the hindrance effect, improve sealed effect. Of course, in other embodiments, only one first projection may be provided.

Further, the second centrifugal portion 226 includes at least two second protrusions, which are sequentially arranged along the axial direction of the rotating shaft 13, and each of the second protrusions is obliquely arranged toward a direction away from the first centrifugal portion 224, so that the second protrusions guide the air flow toward the other one of the second seal 23 and the bearing 12 when rotating with the rotating shaft 13.

The working principle and structure of the second protrusion are the same as those of the first protrusion, and those skilled in the art can set the second protrusion according to the setting requirement, and only need to ensure that the airflow is guided to flow toward the bearing 12 when the second protrusion rotates, which is not described herein again.

In some embodiments, the bearing sealing mechanism further includes a locking member 30, the locking member 30 is fixedly connected to the rotating shaft 13, and the locking member 30 is located on a side of the second sealing member 23 away from the first sealing member 21, so that the second sealing member 23 is fixed relative to the rotating shaft 13. Specifically, the locker 30 is a lock nut.

It can be understood that the first centrifugal piece 22 and the second sealing piece 23 are both fixedly connected to the rotating shaft 13, the first centrifugal piece 22 is located in the accommodating cavity 212, the first centrifugal piece 22 can abut against the bearing 12, and the second sealing piece 23 can be fixed by the first centrifugal piece 22 and the lock nut.

Referring to fig. 4, in other embodiments, the sealing assembly includes a third sealing member 25, the third sealing member 25 is hermetically and fixedly connected to the bearing seat 11, and the first sealing member 21 is in sealing contact with the rotating shaft 13 to form a receiving cavity 212 communicating with the inside of the bearing 12 between the rotating shaft 13 and the receiving cavity.

In practical application, the bearing sealing mechanism is disposed below the bearing seat 11, and the bearing sealing mechanism is disposed on the upper and lower sides of the bearing seat 11 located below.

In particular, the third seal 25 is sealingly and fixedly connected to the side of the bearing housing 11 remote from the first seal 21.

Note that, the third seal 25 is similar in structure to the first seal 21 and is annular, but the third seal 25 is sealingly and fixedly connected to the bearing housing 11 and also sealingly abuts against the rotary shaft 13.

In this way, the first seal 21 and the second seal 23 can be provided on the upper side of the bearing housing 11, and the third seal 25 can be provided on the lower side of the bearing housing 11, thereby ensuring that the lubricating oil or grease inside the bearing 12 does not flow out.

In addition, in other embodiments, the first sealing element 21 or the third sealing element 25 may also be hermetically and fixedly connected to the second connecting plate 16 or the third connecting plate 17 fixedly connected to the bearing seat 11, as long as a receiving cavity 212 is formed between the first sealing element 21 or the third sealing element 25 and the rotating shaft 13.

It should be explained that if the first sealing member 21 and the second sealing member 23 are disposed at the lower side of the bearing seat 11, even if the first centrifugal member 22 is disposed in the accommodating chamber 212, the lubricant or grease inside the bearing 12 will still flow into the accommodating chamber 212 under the action of gravity and then flow out from the air flow channel, resulting in leakage of the lubricant or grease, and therefore the third sealing member 25 is disposed at the lower side of the lower bearing seat 11 to prevent the lubricant or grease inside the bearing 12 from flowing out.

In some embodiments, the third sealing element 25 has a second connection hole and a third connection hole which are coaxial and are communicated with each other, the aperture of the second connection hole is larger than that of the third connection hole, when the third sealing element 25 is sleeved on the rotating shaft 13, the inner wall of the third connection hole is in sealing contact with the rotating shaft 13, and the accommodating cavity 212 is formed between the second connection hole and the rotating shaft 13.

In some embodiments, the bearing sealing mechanism further includes a fourth sealing member 26, the fourth sealing member 26 is sealingly and fixedly connected to the rotating shaft 13, and an inner wall of the third connecting hole is sealingly connected with an outer side of the fourth sealing member 26 to seal the receiving cavity 212.

Further, a plurality of second sealing protrusions are formed on the outer side of the fourth sealing member 26, and second grooves which are in sealing fit with the plurality of second sealing protrusions are formed on the inner wall corresponding to the third connecting holes.

It will be appreciated that when the housing chamber 212 is located between the third seal 25 and the rotating shaft 13, the first centrifugal member 22 is mainly used for guiding the airflow to flow towards the bearing 12, and at the same time, because the third seal 25 is in sealing abutment with the rotating shaft 13, the airflow guided by the first centrifugal member 22 to flow towards the bottom of the housing chamber 212 will circulate in the housing chamber 212.

In some embodiments, a retaining member 30 can be provided in both embodiments, and the retaining member 30 can also be used to secure the fourth sealing member 26 relative to the shaft 13. Referring specifically to fig. 1, the locking members 30 of the two embodiments are actually disposed at opposite ends of the shaft 13.

It should be noted that, when the first centrifugal part 22 is located in the receiving cavity 212 between the third sealing member 25 and the rotating shaft 13, one side of the first centrifugal part 22 abuts against the bearing 12, and the other side thereof can abut against the shoulder of the rotating shaft 13 or the fourth sealing member 26, and the fourth sealing member 26 is locked by the locking member 30.

In some exemplary embodiments, two bearings 12 are provided in each bearing seat 11, wherein two tapered roller bearings 12 are provided in the upper bearing seat 11 and two angular ball bearings 12 are provided in the lower bearing seat 11.

Further, two narrow end faces of two tapered roller bearings 12 set up in opposite directions to improve tapered roller bearing 12's axial bearing capacity, and two wide end faces of two angular contact ball bearings 12 set up in opposite directions to convenient installation, thereby improve the installation accuracy, can ensure pivot 13 axial float when pivot 13 generates heat to extend simultaneously, avoid pivot 13 to take place crooked life-span and the gyration accuracy that influences pivot 13.

It can be understood that the bearing seat 11 located above is fixed relative to the frame 14, so that the bearing seat 11 and the bearing 12 are subjected to an axial acting force of the rotating shaft 13, and therefore two tapered roller bearings 12 with opposite narrow end surfaces are arranged, and the narrow end surfaces are mutually abutted, so that an axial load acting point can span, and the two bearings 12 can bear a larger overturning moment, and the axial bearing capacity is improved; the lower bearing seat 11 is floating and mainly plays a role of rotation support, and because the external environment of the floating end is better than that of the fixed end above, the third sealing element 25 can be matched with the first centrifugal element 22, and two angular contact ball bearings 12 with opposite wide end faces are arranged.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A bearing seal mechanism, comprising:

the sealing assembly is used for being hermetically and fixedly connected with one end of the bearing seat and is in sealing fit with the rotating shaft, and an accommodating cavity communicated with the interior of the bearing is formed between the sealing assembly and the rotating shaft; and

the first centrifugal piece is used for being fixedly connected with the rotating shaft, is positioned in the accommodating cavity and is used for guiding airflow to flow towards the bearing when rotating along with the rotating shaft.

2. The bearing seal mechanism of claim 1 wherein the seal assembly includes a first seal member and a second seal member, the first seal member is configured to be sealingly and fixedly connected to the bearing housing, the second seal member is configured to be sealingly connected to a rotating shaft, the second seal member is located on a side of the first seal member away from the bearing housing, and the first seal member and the second seal member are spaced apart along an axial direction of the rotating shaft to form a tortuous air flow path between the first seal member and the second seal member that communicates the receiving cavity with the outside.

3. The bearing seal mechanism of claim 2 wherein the first seal member includes a connecting portion and at least one first sealing protrusion, the connecting portion being configured to be sealingly connected to the bearing seat, the at least one first sealing protrusion being fixedly connected to a side of the connecting portion away from the bearing seat;

the second sealing element is provided with at least one first groove, each first sealing bulge extends into one corresponding first groove, and a gap exists between each first sealing bulge and each first groove to form the zigzag airflow channel.

4. The bearing seal mechanism of claim 2 further comprising a retaining member configured to be fixedly coupled to the shaft, wherein the retaining member abuts against a side of the second sealing member away from the first sealing member to fix the second sealing member relative to the shaft.

5. The bearing seal mechanism of claim 1 wherein the seal assembly includes a third seal member sealingly and fixedly connected to one end of the bearing housing and sealingly abutting the shaft, the third seal member and the shaft forming the receiving cavity therebetween.

6. The bearing seal mechanism of claim 1 wherein the first eccentric member includes a body portion fixedly attached to the shaft and an eccentric structure fixedly attached to a side of the body portion remote from the shaft for directing airflow toward the seal assembly and the bearing, respectively, when rotating with the shaft.

7. The bearing seal mechanism of claim 6 wherein the centrifugal structure comprises a first centrifugal portion and a second centrifugal portion, the first centrifugal portion and the second centrifugal portion are both fixedly connected to a side of the body portion away from the rotating shaft, and the first centrifugal portion and the second centrifugal portion are arranged in sequence in an axial direction of the rotating shaft, the first centrifugal portion is configured to direct the airflow toward the seal assembly when rotating with the rotating shaft, and the second centrifugal portion is configured to direct the airflow toward the bearing when rotating with the rotating shaft.

8. The bearing seal mechanism according to claim 7, wherein the first centrifugal portion includes at least two first protrusions, the at least two first protrusions are arranged in sequence in an axial direction of the rotating shaft, and each of the first protrusions is arranged to be inclined toward a direction away from the second centrifugal portion.

9. The bearing seal mechanism according to claim 7, wherein the second centrifugal portion includes at least two second protrusions, the at least two second protrusions are arranged in sequence in the axial direction of the rotating shaft, and each of the second protrusions is arranged to be inclined toward a direction away from the first centrifugal portion.

10. A compacting apparatus comprising a bearing housing, a bearing and a shaft, and a bearing seal mechanism as claimed in any one of claims 1 to 9, wherein the bearing is disposed in the bearing housing, the shaft is supported by the bearing, and the bearing seal mechanism is disposed on opposite sides of the bearing housing along an axial direction of the shaft.

Images