Waterproof device for direct-drive motor of magnetism-assisting synchronous reluctance cooling tower

Abstract

The utility model belongs to the technical field of waterproof application of motors, and particularly discloses a waterproof device for a direct-drive motor of a magnetism-assisting synchronous reluctance cooling tower, which comprises a shaft head, a bearing outer cover, a bearing base, a bearing, a sealing cover plate, a sealing cover plate through groove, a conical waterproof silica gel sealing part, a conical waterproof silica gel sealing part through groove, a conical extrusion part and the like. The waterproof device has the advantages that the sealing cover plate, the conical waterproof silica gel sealing part and the two layers of waterproof sealing rings of the waterproof device form four waterproof structures, corrosive water, water vapor and other liquid are efficiently prevented from making contact with the interior of the motor bearing, the sealing and waterproof performance requirements are met, and meanwhile the waterproof device is reasonable in structural design and convenient to manufacture and assemble; four waterproof structure materials of the waterproof device can resist high temperature up to 240 DEG C, so that the waterproof device is prevented from being deformed due to high temperature; the reasonable and effective application of the waterproof device indirectly ensures that the equipment is not influenced by severe environmental factors, prolongs the service life of the motor, and reduces the manual maintenance cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor waterproof application, and specifically relates to a waterproof device for a magnetic synchronous reluctance cooling tower direct-drive motor. The utility model is suitable for waterproofing magnetic synchronous reluctance direct-drive motors, reducers and other motor equipment in cooling towers in other industries such as steel, chemical industry, power plants, and metallurgy, and is mainly used to prevent anti-corrosive water vapor from damaging the motor. Background Art

[0002] Reducers are widely used and are also used in cooling towers. At present, in the traditional cooling tower fan system, because the equipment in the cooling tower is a motor + fan direct drive mode, the waterproof performance of the motor is more stringent, so the waterproof performance of the equipment in the cooling tower has become an important part of the equipment design. At the same time, the waterproof performance of the reducer bearing is poor. When the mass fraction of oil and water in the radial bearing is 1%, the bearing life can be reduced by 90%. Long-term operation will cause bearing wear, seriously causing the reducer and similar working equipment to fail to work, resulting in production damage.

[0003] At present, the special bearing seals produced by manufacturers, after running in a high-temperature environment for 1-2 years, the constant friction between the seals and the bearings causes the seals to deform and corrode, making the bearings unable to achieve the sealing effect. Oil, water, chemically corrosive liquids and gases are mixed into the bearings, and the lubricating oil in the bearings deteriorates, eventually causing serious corrosion inside the bearings.

[0004] That is, the shortcomings of the current special bearing seals are reflected in: 1. The reducer in the cooling tower cannot prevent corrosive water and water vapor from radially entering the bearing, causing serious corrosion of the bearing; 2. The waterproof seal inside the bearing is easily deformed and cannot meet the performance requirements of waterproofing and corrosion resistance; 3. The seal material is ordinary material and is not resistant to high temperature environment and friction; 4. Ordinary equipment only installs sealing components inside the bearing cover, and there is no reasonable waterproof component designed between the shaft head and the bearing cover, and effective waterproof isolation cannot be achieved.

[0005] Therefore, based on the above problems, the utility model provides a waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower. Utility Model Content

[0006] Purpose of the utility model: The purpose of the utility model is to provide a waterproof device for a magnetic-assisted synchronous reluctance cooling tower direct-drive motor to solve the sealing protection problem of the magnetic-assisted synchronous reluctance direct-drive motor and other motor equipment in high temperature environment, corrosive environment, water and water vapor environment, corrosive liquid environment and corrosive gas environment.

[0007] Technical solution: The utility model provides a waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower, comprising a shaft head, a bearing outer cover, a bearing base and a bearing, wherein a sealing cover plate is arranged on the bearing base, a sealing cover plate through groove is arranged within the symmetry center line of the sealing cover plate, a conical waterproof silicone sealing portion is arranged within the sealing cover plate, a conical waterproof silicone sealing portion through groove is arranged within the conical waterproof silicone sealing portion, a conical extrusion portion is arranged on the inner wall of the sealing cover plate and below the sealing cover plate through groove; wherein, one end of the shaft head passes through the sealing cover plate through groove and is assembled with the bearing in the bearing outer cover, the conical waterproof silicone sealing portion is located in the conical extrusion portion of the inner wall of the sealing cover plate, and the outer wall of the shaft head and the bearing outer cover is tightly covered in the conical waterproof silicone sealing portion through groove of the conical waterproof silicone sealing portion.

[0008] In the technical solution, the waterproof device for the direct-drive motor of the magnetic-assisted synchronous reluctance cooling tower also includes at least two layers of waterproof sealing rings arranged on the inner wall of the bearing outer cover and used in conjunction with the bearing; wherein the waterproof sealing rings include but are not limited to hydrogenated nitrile rubber or silicone or fluororubber or silicone fluororubber.

[0009] In the technical solution, the waterproof device for the direct-drive motor of the magnetic-assisted synchronous reluctance cooling tower also includes a plurality of bearing base screw grooves arranged on the outer layer of the bearing base, and a plurality of sealing cover plate screw holes arranged on the outer layer of the sealing cover plate, and bolts for fixing and assembling the sealing cover plate and the bearing base through the sealing cover plate screw holes and the bearing base screw grooves; wherein the size of the conical waterproof silicone sealing part is larger than the size of the conical extrusion part, and the sealing cover plate is arranged as an open circular structure.

[0010] In the technical solution, the sealing cover plate includes but is not limited to tetrafluoroethylene material.

[0011] Compared with the prior art, the utility model has the beneficial effects of a waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower: 1. The sealing cover plate, the conical waterproof silicone sealing part, and the two-layer waterproof sealing ring of the waterproof device constitute a four-layer waterproof structure, which can effectively block the contact between corrosive water, water vapor and other liquids and the inside of the motor bearing, and achieve the sealing and waterproof performance requirements. At the same time, the structural design is reasonable and easy to manufacture and assemble; 2. The four waterproof structural materials of the waterproof device can withstand high temperatures of up to 240°C, preventing the waterproof device from being deformed by high temperatures; 3. The application of a reasonable and effective waterproof device indirectly ensures that the equipment is not affected by harsh environmental factors, extends the service life of the motor, and reduces labor maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the main structure of a waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower of the utility model;

[0014] Figure 2 It is a top view structural schematic diagram of a bearing outer cover, a bearing base and a bearing etc. of a waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower of the utility model;

[0015] Figure 3 It is a top view structural schematic diagram of a sealing cover plate, a sealing cover plate screw hole, and a sealing cover plate through groove for a waterproof device of a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower of the utility model;

[0016] Figure 4 It is a schematic diagram of the main cross-sectional structure of a conical waterproof silicone seal part and a conical waterproof silicone seal part through groove for a waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower of the utility model;

[0017] Figure 5 It is a schematic diagram of the main cross-sectional structure of a sealing cover plate, a sealing cover plate screw hole, a sealing cover plate through groove, and a conical extrusion portion of a waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower of the utility model;

[0018] Among them, the serial numbers in the figure are as follows: 1-shaft head, 2-bolt, 3-sealing cover, 4-conical waterproof silicone sealing part, 5-bearing outer cover, 6-bearing base, 7-waterproof sealing ring, 8-bearing, 31-sealing cover screw hole, 32-sealing cover through groove, 33-conical extrusion part, 41-conical waterproof silicone sealing part through groove, 61-bearing base screw groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Embodiment 1

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The waterproof device for a direct-drive motor of a magnetic synchronous reluctance cooling tower shown in the figure comprises a shaft head 1, a bearing outer cover 5, a bearing base 6 and a bearing 8.

[0023] A sealing cover plate 3 is provided on the bearing base 6.

[0024] A sealing cover plate through groove 32 is provided in the symmetric center line of the sealing cover plate 3.

[0025] A conical waterproof silicone sealing portion 4 is provided inside the sealing cover plate 3.

[0026] The conical waterproof silicone seal portion 4 is provided with a conical waterproof silicone seal portion through groove 41.

[0027] The inner wall of the sealing cover plate 3 is provided with a conical extrusion portion 33 below the sealing cover plate through groove 32;

[0028] Among them, one end of the shaft head 1 passes through the sealing cover plate groove 32 and is assembled with the bearing 8 in the bearing outer cover 5. The conical waterproof silicone sealing part 4 is located in the conical extrusion part 33 of the inner wall of the sealing cover plate 3. The outer walls of the shaft head 1 and the bearing outer cover 5 are tightly wrapped in the conical waterproof silicone sealing part groove 41 of the conical waterproof silicone sealing part 4. After the assembly is completed, the sealing cover plate 3 and the conical waterproof silicone sealing part 4 form two waterproof structures to block corrosive water, water vapor and other liquids from contacting the inside of the motor bearing, thereby achieving the sealing and waterproof performance requirements.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, the waterproof device for the direct-drive motor of the magnetic-assisted synchronous reluctance cooling tower further includes at least two layers of waterproof sealing rings 7 arranged on the inner wall of the bearing outer cover 5 and used in conjunction with the bearing 8;

[0031] The above design structure forms 4 waterproof structures after assembly, which can effectively block the contact between corrosive water, water vapor and other liquids and the inside of the motor bearing, thus achieving the sealing and waterproof performance requirements;

[0032] The waterproof sealing ring 7 includes but is not limited to hydrogenated nitrile rubber or silicone rubber or fluororubber or silicone fluororubber, which is resistant to high temperature, prevents deformation and is durable, thereby achieving a safe sealing and waterproofing function.

[0033] Embodiment 3

[0034] On the basis of the first or second embodiment, the waterproof device for the direct-drive motor of the magnetic synchronous reluctance cooling tower further includes a plurality of bearing base screw grooves 61 arranged on the outer layer of the bearing base 6, and a plurality of sealing cover plate screw holes 31 arranged on the outer layer of the sealing cover plate 3, and bolts 2 for fixing and assembling the sealing cover plate 3 and the bearing base 6 through the sealing cover plate screw holes 31 and the bearing base screw grooves 61. The above-mentioned design structure is a split type as a whole, which is convenient for assembly and production, and also convenient for disassembly and maintenance;

[0035] Among them, the size of the conical waterproof silicone sealing part 4 is larger than the size of the conical extrusion part 33, and the sealing cover plate 3 is set as an open circular structure, which is convenient for the assembly of the conical waterproof silicone sealing part 4. At the same time, after assembly, the inner wall / outer wall of the conical waterproof silicone sealing part 4 is tightly fitted with the inner wall of the conical extrusion part 33, the outer wall of the connecting surface of the shaft head 1 and the bearing outer cover 5, respectively, to achieve sealing.

[0036] In addition, preferably, the sealing cover plate 3 includes but is not limited to polytetrafluoroethylene material, which is resistant to high temperature, prevents deformation and is durable, thereby achieving a safe sealing and waterproofing function.

[0037] The structural principle or working principle of the waterproof device for direct-drive motor of magnetic-assisted synchronous reluctance cooling tower of this structure:

[0038] Please review Figures 1 to 5 :

[0039] First, the two layers of waterproof sealing rings 7 are sequentially mounted and installed on the inner wall of the bearing outer cover 5, and the innermost layer of the two layers of waterproof sealing rings 7 is mounted on the bearing 8;

[0040] Then, the conical waterproof silicone seal 4 is mounted on the shaft head 1 and the bearing outer cover 5 through the conical waterproof silicone seal groove 41;

[0041] Finally, the sealing cover plate 3 is mounted on the shaft head 1 and the bearing outer cover 5 through the sealing cover plate through groove 32 , and the sealing cover plate 3 and the bearing base 6 are fixedly assembled by using the bolts 2 through the sealing cover plate screw holes 31 and the bearing base screw grooves 61 .

[0042] After assembly, it is difficult for water and water vapor to enter the inside of the bearing outer cover 5. In addition, there are two layers of waterproof sealing rings 7 inside the bearing outer cover 5. There are a total of four waterproof measures, which completely block radial water and water vapor, and make the inside of the bearing outer cover 5 completely in a vacuum, so that the magnetic-assisted synchronous reluctance cooling tower direct-drive motor is not affected by water, water vapor, and corrosive liquids and gases, allowing the motor to work normally.

[0043] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations 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 more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A waterproof device for a direct-drive motor in a magnetic-assisted synchronous reluctance cooling tower, comprising a shaft head (1), a bearing outer cover (5), a bearing base (6) and a bearing (8), characterized in that: The bearing base (6) is provided with a sealing cover plate (3). A sealing cover plate through groove (32) is provided in the symmetric center line of the sealing cover plate (3). The sealing cover plate (3) is provided with a conical waterproof silica gel sealing portion (4). The conical waterproof silicone seal portion (4) is provided with a conical waterproof silicone seal portion through groove (41). The inner wall of the sealing cover plate (3) is provided with a conical extrusion portion (33) below the sealing cover plate through groove (32); One end of the shaft head (1) passes through the sealing cover plate through groove (32) and is assembled with the bearing (8) in the bearing outer cover (5); the conical waterproof silicone seal (4) is located in the conical extrusion portion (33) of the inner wall of the sealing cover (3); and the outer wall of the shaft head (1) and the bearing outer cover (5) is tightly covered in the conical waterproof silicone seal through groove (41) of the conical waterproof silicone seal (4).

2. A waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower according to claim 1, characterized in that: The waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower also includes at least two layers of waterproof sealing rings (7) arranged on the inner wall of the bearing outer cover (5) and used in conjunction with the bearing (8); The waterproof sealing ring (7) includes but is not limited to hydrogenated nitrile rubber or silicone rubber or fluororubber or silicone fluororubber.

3. The waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower according to claim 1, characterized in that: The waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower further comprises a plurality of bearing base screw grooves (61) arranged on the outer layer of the bearing base (6), a plurality of sealing cover plate screw holes (31) arranged on the outer layer of the sealing cover plate (3), and bolts (2) for fixing and assembling the sealing cover plate (3) and the bearing base (6) through the sealing cover plate screw holes (31) and the bearing base screw grooves (61); The size of the conical waterproof silicone sealing portion (4) is larger than the size of the conical extrusion portion (33), and the sealing cover plate (3) is configured as an open circular structure.

4. The waterproof device for a direct-drive motor of a magnetic-assisted synchronous reluctance cooling tower according to claim 1, characterized in that: The sealing cover plate (3) includes but is not limited to tetrafluoroethylene material.

Images