Bearing seat for high-dust environment and sealing device of bearing seat

Abstract

The utility model relates to the technical field of industrial manufacturing, particularly discloses a bearing seat for a high-dust environment and a sealing device of the bearing seat, and aims to solve the technical problems of dust prevention, installation and fixation, ventilation and heat dissipation and the like in the traditional design. Firstly, the multiple layers of rubber sealing rings are adopted and reasonably arranged, dust is effectively prevented from entering the bearing seat through the design, and a bearing and related parts are protected against dust damage. Bolt holes are evenly distributed in the surface of the flange, and a corresponding fixing method is provided, so that the fixing problem in the installation process is solved, the installation steps are simplified, and the installation efficiency is improved. The open hollow layer is directly communicated with the outside to form an air circulation air passage, so that the problems of dust circulation and ventilation and heat dissipation in the bearing seat are solved, the temperature of the bearing during operation is reduced, the service efficiency of the bearing is improved, and the service life of the bearing is prolonged. The design of the bearing seat improves the use performance and reliability of the bearing, and the bearing seat has important engineering application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial manufacturing, in particular to a bearing seat and a sealing device thereof for a high dust environment. Background Art

[0002] A bearing seat for high dust environment is mainly used in high dust (dust) working environment, can adapt to any speed conditions, and is widely used in high dust, flammable and explosive environments such as coal mines, sandstone, and mines. It is especially suitable for crushers, screening equipment and other equipment that will generate a large amount of air inside.

[0003] When industrial equipment such as crushers and screening equipment are in normal use, a very large amount of air will be generated inside the equipment. Since the entire equipment is closed, the air generated by the operation of the equipment can only overflow from the gaps between the rotating parts. At the same time, because crushers and screening equipment will produce a lot of dust when in use, the wind generated by the rotation will carry the dust and overflow into the bearings, thereby affecting the performance and service life of the bearings.

[0004] In the patent of "External Bearing Support" (publication number CN200971923Y, hereinafter referred to as prior art 1), it is disclosed that a first sealing ring is embedded in the sealing groove of the bearing cover, so even when the use environment is poor, due to the good sealing, impurities such as powder are difficult to enter the bearing, thereby protecting the bearing and increasing the service life of the bearing; however, since the environment we use is more severe, the equipment is in harsh working conditions for a long time. The prior art 1 only provides one layer of sealing ring, which is far from enough to isolate the dust, and if only one layer of sealing ring is provided, once the sealing ring is damaged, the bearing can no longer be protected. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a bearing seat and a sealing device thereof for a high dust environment, so as to solve the problem that dust may enter the interior of the bearing seat in a high dust environment, affect the normal operation of the bearing, and reduce the service life of the bearing.

[0006] In the first aspect, an embodiment of the utility model provides a bearing seat for a high dust environment, characterized in that it includes a flange and a mounting seat; the positions of the flange and the mounting seat are the flange layer and the mounting layer respectively, and the flange layer and the mounting layer are fixedly connected by columns to form a whole; the columns include a plurality of columns, and the plurality of columns are arranged between the flange layer and the mounting layer at preset uniform intervals; seals are provided inside the flange and the mounting seat; the seals include a first-level seal and a second-level seal; the first-level seal is arranged inside the flange; the second-level seal is arranged on the inner ring of the mounting seat.

[0007] Preferably, a hollow layer is formed between the flange layer and the installation layer by arranging a plurality of the columns at intervals; the hollow layer is an open space, and the hollow layer is directly connected to the outside.

[0008] Preferably, the flange layer and the hollow layer are connected to each other; the hollow layer forms an air circulation passage through direct connection with the outside and the connection with the flange layer.

[0009] Preferably, the sealing member is a rubber sealing ring, and the rubber sealing ring is provided with multiple layers inside the flange and the mounting seat.

[0010] Preferably, the multiple layers of rubber sealing rings disposed on the inner ring of the mounting seat are arranged in a stepped manner; and the diameters of the multiple layers of rubber sealing rings are arranged to increase gradually from the end away from the flange.

[0011] Preferably, the mounting seat is provided with a plurality of evenly distributed end cover mounting holes on the circumference of the body away from the end where the flange is provided, and the mounting seat is mounted on the bearing cover through the end cover mounting holes.

[0012] Preferably, the mounting seat is hollowed out inside between the rubber sealing ring and the bearing cover to form an accommodating space; a bearing is arranged in the accommodating space.

[0013] Preferably, the column is fixedly connected to the flange and the mounting seat at both ends by welding.

[0014] Preferably, the surface of the flange is provided with evenly distributed bolt holes, and the entire bearing seat is fixed to the equipment body by connecting the bolts to the bolt holes.

[0015] In a second aspect, a sealing device is provided, comprising a bearing seat for use in a high dust environment as described in any of the above items.

[0016] The utility model provides a bearing seat and a sealing device for a high dust environment, which has the following beneficial effects:

[0017] 1. Suitable for high dust environment: The bearing seat is designed for high dust environment. The internal seal effectively prevents dust from entering the bearing seat, protects the bearing and related components from dust, and extends the service life of the bearing seat.

[0018] 2. Dustproof seal design: A multi-layer rubber seal ring is designed with a stepped setting, which effectively enhances the sealing effect, improves the dustproof performance, reduces the impact of dust on the bearing, and maintains stable bearing performance.

[0019] 3. Air circulation duct design: Some parts are designed with an open hollow layer that is directly connected to the outside world, forming an air circulation duct, which helps the circulation of air inside the bearing seat, reduces the temperature of the bearing during operation, and improves the use efficiency and life of the bearing; it also discharges excess dust through the air circulation duct, so that the dust cannot enter the bearing seat and even the bearing.

[0020] In summary, the beneficial effects of the design of the bearing seat include increasing the service life of the bearing and protecting the bearing and related parts from dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment of the utility model will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0022] Figure 1 It is a cross-sectional structural diagram of a bearing seat used in a high dust environment;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the air flow passage of a bearing seat used in a high dust environment;

[0024] Figure 3 This is a schematic diagram of the flange mounting surface of a bearing seat for use in a high dust environment;

[0025] Figure 4 It is a cross-sectional structural diagram of a bearing seat column arrangement for use in a high dust environment;

[0026] Parts and numbers in the picture:

[0027] 1-Bearing seat;

[0028] 10-flange layer, 11-first-stage seal, 12-bolt hole;

[0029] 20-installation layer, 21-second-stage seal, 22-end cover installation hole, 23-bearing cover, 24-accommodation space;

[0030] 30-hollow layer, 31-air circulation channel;

[0031] 40-column;

[0032] 50- Equipment body. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0034] Example 1

[0035] See also Figures 1 to 4 The embodiment of the utility model provides a bearing seat for a high dust environment, characterized in that it includes a flange and a mounting seat; the flange and the mounting seat are located at the flange layer 10 and the mounting layer 20 respectively, and the flange layer 10 and the mounting layer 20 are fixedly connected by a column 40 to form a whole; the column 40 respectively fixes the flange and the mounting seat arranged at both ends together to form a whole; preferably, the column 40 is fixedly connected to the flange and the mounting seat at both ends by welding. However, it is not limited to welding, and also includes riveting, bonding, fastener connection, clamping connection, press-fit (press-in) connection or locking device connection.

[0036] Riveting is to rivet the flange and the mounting seat to the column 40 respectively, and a certain spacing distance is set between the flange and the mounting seat; and the flange and the mounting seat are permanently connected together. Riveting is suitable for connections that do not require disassembly, and has good sealing performance and structural strength. Bonding is to use adhesives to bond the two ends of the flange and the mounting seat to the two ends of the column 40 respectively. However, since the bonding strength is limited by the performance of the adhesive, it is selectively applicable according to the actual working conditions; fastener connection is to fix the components together through the tightening action of the thread through components such as screws and self-tapping screws. This method is suitable for small or light-load connections. Press-fit (press-in) connection is to press the components into another component by mechanical force, so that a close fit is produced between the two, which is more suitable for the connection of mating parts such as shafts and bearings; locking device connection is a connection method achieved by a locking device (such as a locking nut, a locking washer, etc.), which can effectively prevent the connection from loosening under external forces such as vibration. Compared with other connection methods, the advantages of welding are mainly reflected in the following aspects: high strength, welding can achieve continuous bonding of metals to form an integrated connection with high strength and rigidity, suitable for structural connections that bear large or high loads; good sealing, welding joints usually have no gaps, and can achieve better sealing, suitable for occasions with high requirements such as waterproofing, dustproofing, and gas penetration prevention; more suitable for applications with dustproof effects; lightweight, welding can reduce or eliminate other connectors at the connection site, thereby reducing the weight of the structure and facilitating lightweight design; corrosion resistance, welding joints have no threads and gaps, which reduces the intrusion of corrosive media and has better corrosion resistance, making the sealing of its components more stable and the service life more lasting; low cost, compared with some other connection methods, welding does not require additional connectors, the process is simple, and the required material cost is relatively low.

[0037] Example 2

[0038] See also Figures 1 to 4 The utility model embodiment provides a bearing seat for a high dust environment, characterized in that the column 40 includes a plurality of columns, and the plurality of columns 40 are arranged between the flange layer 10 and the mounting layer 20 at preset uniform intervals; firstly, the preset uniform intervals when the columns 40 are installed are arranged at intervals according to preset interval angles on the circumference of the mounting surface of the flange and the mounting seat; secondly, the interval angles when the columns 40 are installed must be sufficient, and sufficient intervals should be left to reserve space for air circulation and dust passage for the air circulation duct 31 described below.

[0039] The flange and the mounting seat are both provided with seals; the seals include a first-level seal 11 and a second-level seal 21; the first-level seal 11 is provided inside the flange; the second-level seal 21 is provided on the inner ring of the mounting seat; the dust is isolated step by step by the first-level seal 11 and the second-level seal 21 which are provided respectively until the dust cannot enter or is completely discharged.

[0040] Preferably, a hollow layer 30 is formed between the flange layer 10 and the mounting layer 20 by arranging a plurality of the columns 40 at intervals; the hollow layer 30 is an open space, and the hollow layer 30 is directly connected to the outside.

[0041] Preferably, the flange layer 10 and the hollow layer 30 are connected to each other; the hollow layer 30 forms an air flow passage 31 through direct communication with the outside and the connection with the flange layer 10; the air flow passage 31 enters from the outside of the flange and flows out through the spaces between the columns 40; for details, please refer to Figure 2 The air circulation channel 31 can also solve the problem of ventilation and heat dissipation inside the bearing seat. During the long-term operation of the bearing, a high temperature may be generated, affecting the normal operation and service life of the bearing. By designing the open hollow layer 30 to be directly connected to the outside world, the air circulation channel 31 is formed, which solves the problem of ventilation and heat dissipation inside the bearing seat 1, helps to reduce the temperature of the bearing during operation, and improves the use efficiency and life of the bearing.

[0042] Preferably, the seal is a rubber seal ring, and the rubber seal ring is provided with multiple layers inside the flange and the mounting seat; the rubber seal ring can effectively prevent dust and other tiny particles from entering the bearing, and keep the bearing clean; wherein, the seal can also be provided with a metal seal, and the metal seal can provide better sealing performance and effectively prevent the intrusion of dust and particles. Metal seals are generally suitable for environments with higher requirements for sealing performance; ball bearing sealing covers, some ball bearings are equipped with sealing covers, which can effectively prevent dust and particles from entering the bearing; gas seals, in certain environments, the use of gas seals can effectively prevent dust and particles from entering the bearing, and keep the bearing clean; liquid seals, liquid seals can use special lubricating oil or grease to fill the space between the bearing and the seal to form an effective sealing layer to prevent the intrusion of dust and particles.

[0043] Rubber seals have some advantages over other sealing measures, including easy installation. The seals usually have a relatively simple design and are easy to install on the outer or inner ring of the bearing. This allows the rubber seals to be replaced quickly when the bearing is replaced or maintained, which improves the convenience of operation; low cost. Compared with some complex metal seals or other sealing methods, rubber seals are usually low in cost. This is an advantage for applications that require a large number of bearing seals or are cost-sensitive; good elasticity and sealing. Rubber seals have good elasticity, can adapt to the movement of the bearing, and form a good sealing effect after installation. This elasticity can compensate for the incomplete match between the bearing and the external environment to a certain extent. Anti-pollution ability. Rubber seals can effectively prevent grease, lubricating oil and external contaminants from entering the bearing, keep the bearing clean and extend the service life of the bearing; wear resistance. Due to some characteristics of rubber materials, rubber seals have certain wear resistance and can maintain an effective sealing effect for a long time when the bearing is running. This rubber seal has certain advantages in terms of easy installation, low cost, good sealing performance and anti-pollution ability, so it is widely used in many bearing applications.

[0044] Preferably, the multiple layers of rubber sealing rings disposed on the inner ring of the mounting seat are arranged in a stepped manner; and the diameters of the multiple layers of rubber sealing rings are arranged to increase gradually from the end away from the flange.

[0045] Preferably, the mounting seat is provided with a plurality of evenly distributed end cover mounting holes 22 on the circumference of the body away from the end where the flange is provided, and the mounting seat is provided with the bearing cover 23 through the end cover mounting holes 22 .

[0046] Preferably, the mounting seat is hollowed out inside between the rubber sealing ring and the bearing cover 23 to form an accommodating space 24 ; a bearing is arranged in the accommodating space 24 .

[0047] Preferably, the surface of the flange is provided with evenly distributed bolt holes 12 , and the entire bearing seat 1 is fixed to the equipment body 50 by connecting the bearing seat with the bolt holes 12 through bolts.

[0048] Working principle:

[0049] A bearing seat for a high dust environment comprises three layers, namely a flange layer 10, a middle hollow layer 30, and a bearing mounting layer 20; see the attached Figure 1; The flange layer 10 and the bearing mounting layer 20 are connected into a whole through several columns 40 of the middle hollow layer 30, and the entire bearing seat 1 is not a closed whole; the flange layer 10 is made of a flange, and the entire bearing seat 1 is fixed to the equipment body 50 by bolts. At the same time, several rubber sealing rings are arranged inside the flange as the first-level seal to prevent dust leakage; several columns 40 are welded on the flange layer 10 to separate the flange and the bearing mounting layer 20, and there is enough space between each column 40. The other end of the column 40 is connected to a bearing mounting seat for mounting the bearing. A number of rubber sealing rings are also provided on the inner ring of the bearing mounting seat as a second-level seal to prevent dust from entering the bearing. When the crusher, screening equipment and other equipment are in normal use, a very large amount of air will be generated inside the equipment. Since the entire equipment is closed, the air generated by the operation of the equipment can only overflow from the gap between the rotating parts. At the same time, because the crusher and screening equipment will have a large amount of dust when in use, the wind generated by the rotation will carry the dust through the flange and overflow into the bearing, thereby affecting the performance and service life of the bearing. When the wind generated by the rotation of the equipment will overflow to the bearing seat 1 with dust, the dust will first be blocked by the rubber sealing ring of the first-level seal 11 provided inside the flange, but at this time, some dust will still pass through the rubber sealing ring and continue to overflow. At this time, the dust will enter the middle hollow layer 30. Since the middle hollow layer 30 is an open space, it is connected to the atmosphere and at the same time forms a gap between the holes of the flange. The air circulation duct 31 is formed. When the wind brings dust into this place, it will quickly release the internal pressure and spread around. At the same time, it loses the power to move along the axial direction, and also loses the power to enter the mounting layer 20 of the bearing; if there is still a small amount of dust near the mounting layer 20 of the bearing at this time, a number of rubber sealing rings are also arranged on the inner ring of the bearing mounting seat as a second-level seal to prevent dust from entering the bearing, and further prevent the remaining very small amount of dust from entering the bearing. Through the two-level seal of the bearing and the setting of the air circulation duct 31, the pressure of the dust and wind has been released at this time, and it is almost impossible to pass through the second-level seal; in a high-dust environment, dust will enter the inside of the bearing seat, affect the normal operation of the bearing, and reduce the service life of the bearing. By designing multiple layers of rubber sealing rings and reasonably arranging them, dust can be effectively prevented from entering the inside of the bearing seat, protecting the bearing and related components from dust invasion; such a setting effectively avoids the harm caused by dust and improves the service life of the bearing.

[0050] Compared with conventional bearing seats, the advantage of a bearing seat for high dust environments is that it can completely block dust from entering the bearing, greatly improving the service life and performance of the bearing. It is particularly suitable for equipment such as crushers and screening equipment that generate large amounts of air inside.

[0051] Example 3

[0052] In the second aspect, a sealing device is provided, comprising a bearing seat as described in any of the above embodiments; the bearing seat is provided with a multi-stage sealing arrangement to prevent dust from entering the bearing seat; and the dust is effectively discharged through the air circulation duct 31 formed between the flange and the column 40, so that the bearing seat is protected from dust erosion and the service life of the bearing is increased.

[0053] Example 4

[0054] See also Figures 1 to 4 The embodiment of the utility model provides a bearing seat for a high dust environment. In summary, the bearing seat and its sealing device for a high dust environment provided by the utility model have the following beneficial effects: the bearing seat is designed for a high dust environment, and the internal sealing member effectively prevents dust from entering the interior of the bearing seat, protects the bearing and related components from being invaded by dust, and extends the service life of the bearing seat; and a multi-layer rubber sealing ring is designed, and a stepped arrangement is adopted, which effectively enhances the sealing effect, improves the dustproof performance, reduces the impact of dust on the bearing, and maintains the stability of the bearing performance; plus an air circulation duct design: a partially opened hollow layer is designed to be directly connected to the outside world, forming an air circulation duct, which is conducive to the circulation of air inside the bearing seat, reduces the temperature of the bearing during operation, and improves the use efficiency and life of the bearing; and also discharges excess dust through the air circulation duct, so that the dust cannot enter the bearing seat and even the bearing.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A bearing seat for use in a high dust environment, characterized in that: Includes flange and mounting base; The flange and the mounting seat are located at the flange layer (10) and the mounting layer (20) respectively, and the flange layer (10) and the mounting layer (20) are fixedly connected via a column (40) to form a whole; The columns (40) include a plurality of columns, and the plurality of columns (40) are arranged between the flange layer (10) and the mounting layer (20) at preset uniform intervals; The flange and the mounting seat are both provided with sealing members; The sealing element comprises a first-stage sealing element (11) and a second-stage sealing element (21); the first-stage sealing element (11) is arranged inside the flange; and the second-stage sealing element (21) is arranged on the inner ring of the mounting seat.

2. The bearing seat for high dust environment according to claim 1, characterized in that: A hollow layer (30) is formed between the flange layer (10) and the mounting layer (20) by arranging a plurality of the uprights (40) at intervals; The hollow layer (30) is an open space, and the hollow layer (30) is directly connected to the outside.

3. A bearing seat for high dust environment according to claim 2, characterized in that: The flange layer (10) and the hollow layer (30) are connected to each other; The hollow layer (30) forms an air circulation passage (31) by being directly connected to the outside and penetrating the flange layer (10).

4. The bearing seat for high dust environment according to claim 1, characterized in that: The sealing member is a rubber sealing ring, and the rubber sealing ring is provided with multiple layers inside the flange and the mounting seat.

5. The bearing seat for high dust environment according to claim 4, characterized in that: The multiple layers of rubber sealing rings arranged on the inner ring of the mounting seat are arranged in a stepped manner; and the diameters of the multiple layers of rubber sealing rings are arranged to increase gradually from the end away from the flange.

6. A bearing seat for high dust environment according to claim 5, characterized in that: The mounting seat is provided with a plurality of evenly distributed end cover mounting holes (22) on the circumference of the body at an end away from the flange, and the mounting seat is provided with a bearing cover (23) through the end cover mounting holes.

7. A bearing seat for high dust environment according to claim 6, characterized in that: The mounting seat is hollowed out in the interior between the rubber sealing ring and the bearing cover (23) to form an accommodation space (24); a bearing is provided in the accommodation space (24).

8. The bearing seat for high dust environment according to claim 7, characterized in that: The column is fixedly connected to the flanges and mounting seats at both ends by welding.

9. The bearing seat for high dust environment according to claim 1, characterized in that: The surface of the flange is provided with evenly distributed bolt holes, and the bearing seat is fixed to the equipment body (50) by connecting the bolts to the bolt holes.

10. A sealing device, characterized in that: A bearing seat for use in a high dust environment as claimed in any one of claims 1 to 9.

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