A stainless steel motor

Abstract

The present invention provides a stainless steel motor with good sealing effect and easy to replace end covers. A stainless steel motor comprises a front end cover, a rear end cover, a shaft seal, a rear cover, a rotor and a stator. The stator is sleeved on the rotor. The axial connection parts between the stator and the front end cover, the axial connection parts between the stator and the rear end cover, and the axial connection parts between the rear end cover and the rear cover are all provided with a first seal. The radial connection parts between the stator and the front end cover, the radial connection parts between the stator and the rear end cover, and the radial connection parts between the rear end cover and the rear cover are all provided with a second seal. The present invention forms two sealing forms at the joint surface of the motor parts through the arrangement of the first seal and the second seal. The two sealing forms form a double seal, thereby obtaining a better sealing effect than the prior art. The present invention replaces the front end cover without completely disassembling the machine, and is applicable to various forms of front end cover structures, making it easy to replace the end cover.

Description

Technical Field

[0001] The invention relates to a motor, in particular to a stainless steel motor. Background Art

[0002] Stainless steel motors refer to motors made of stainless steel for the exposed part, and are used in certain special environments, such as the ocean, coastal docks, food processing, chemical industry, metallurgy and other places. Existing ordinary motors are generally painted with aluminum or carbon steel on the surface. Such motors cannot be used in the above environments for a long time. For example, the ocean and coastal docks have very high requirements for the surface corrosion of motors, while food processing, chemical industry, metallurgy and other places require frequent cleaning of stains and dust on the surface of the motor. Stainless steel motors can adapt to the above special environments, but the sealing performance of the existing stainless steel motor structure is not enough to meet the higher requirements of the above environment. After long-term use, the inside of the motor is easily corroded by the external environment and causes failures. In addition to improving the sealing performance, it is also necessary to consider the convenience of end cover maintenance and replacement, and the existing stainless steel motor structure cannot solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a stainless steel motor with good sealing effect and easily removable end cover, so as to solve the problems described in the background technology.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A stainless steel motor comprises a front end cover, a rear end cover, a shaft seal, a rear cover, a rotor and a stator. The stator is sleeved on the rotor, the front end of the stator is fixedly connected to the front end cover, the rear end of the stator is fixedly connected to the rear end cover, the shaft seal is fixedly connected to the front end of the front end cover, and the rear cover is fixedly connected to the rear end of the rear end cover. The axial connection parts between the stator and the front end cover, the axial connection parts between the stator and the rear end cover, and the axial connection parts between the rear end cover and the rear cover are all provided with a first seal, and the radial connection parts between the stator and the front end cover, the radial connection parts between the stator and the rear end cover, and the radial connection parts between the rear end cover and the rear cover are all provided with a second seal.

[0006] Preferably, the second seal comprises an integrally formed root and a raised portion, the raised portion protrudes from the outer ring surface of the root, and a cross-sectional width ratio of the raised portion to the root is 0.4-0.6:1.

[0007] Preferably, the second sealing member is a sealing ring with an inverted T-shaped cross-section, and the outer surface of the second sealing member is flush with the surfaces of each radial connection portion.

[0008] Preferably, the first sealing member is a sealing ring with an O-shaped cross-section, and the outer surface of the first sealing member is higher than the surface of each axial connection portion.

[0009] Preferably, the stator includes an iron core, copper wire, an insulating plate and a casing, the copper wire is wound on the iron core, the casing is sleeved outside the iron core, the front end face of the casing, the front end face of the rear end cover and the front end face of the rear cover are all provided with a left half groove for fixing the second seal, the rear end face of the front end cover, the rear end face of the casing and the rear end face of the rear end cover are all provided with a right half groove for cooperating with the left half groove to fix the second seal, each left half groove and the corresponding right half groove form a second sealed cavity, and the volume of the second sealed cavity is smaller than the volume of the second seal.

[0010] Preferably, the front end of the casing is provided with a casing convex portion whose outer diameter is smaller than the front end of the casing, the front end of the rear end cover is provided with a rear end cover convex portion whose outer diameter is smaller than the rear end cover, and the front end of the rear cover is provided with a rear cover convex portion whose outer diameter is smaller than the rear cover, and the outer surfaces of the casing convex portion, the rear end cover convex portion and the rear cover convex portion are all provided with a first sealing cavity for fixing the first sealing component.

[0011] Preferably, the end face of the convex part of the casing is provided with a plurality of threaded holes, the front end of the front cover is provided with a shaft sealing chamber, the end of the shaft sealing chamber is connected to the shaft seal, and the inside of the shaft sealing chamber is provided with a plurality of countersunk holes for matching the threaded holes, the countersunk holes and the threaded holes are fixedly connected by hexagon socket screws, and the top end of the hexagon socket screws is located in the shaft sealing chamber.

[0012] Preferably, the rotor comprises a rotating shaft, a first bearing, a magnetic steel and a second bearing, and the first bearing, the magnetic steel and the second bearing are sleeved on the rotating shaft.

[0013] Preferably, a third seal is provided at the axial connection portion between the shaft seal and the front end cover. The third seal is a seal ring with an O-shaped cross-section, and an outer surface of the third seal is higher than the surface of the axial connection portion.

[0014] The beneficial effects of the present invention are:

[0015] A stainless steel motor of the present invention forms two sealing forms at the joint surfaces of motor parts by arranging a first sealing member and a second sealing member. The first sealing member is located inside the motor and forms a seal at an axial connection portion, which is suitable for sealing and blocking in corrosive and humid environments. The second sealing member is located on the motor surface and forms a seal at a radial connection portion, which is suitable for environments where water pressure cleaning of the motor surface is required. The two sealing forms form a double seal, thereby obtaining a better sealing effect than the prior art. The present invention also enables the front end cover to be replaced without completely disassembling the machine through the structure of the stator and the front end cover, and is applicable to various forms of front end cover structures, making it easy to remove and replace the end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 yes Figure 1 A partial enlarged view of the middle A part;

[0019] Figure 3 It is a schematic diagram of the rotor structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the stator structure of the present invention;

[0021] Figure 5 is a schematic diagram of the structure of the second sealing member of the present invention;

[0022] Figure 6 It is a schematic diagram of the connection between the stator and the front end cover of the present invention;

[0023] Figure 7 It is a schematic diagram of the front end cover structure of the present invention;

[0024] Figure 8 It is another schematic diagram of the front end cover structure of the present invention.

[0025] In the figure: 1, front end cover, 2, rear end cover, 3, shaft seal, 4, rear cover, 5, rotor, 6, stator, 7, first seal, 8, second seal, 9, left half groove, 10, right half groove, 11, second seal chamber, 12, first seal chamber, 13, threaded hole, 14, countersunk hole, 15, hexagon socket screw, 16, third seal, 101, shaft seal chamber, 201, rear end cover convex part, 401, rear cover convex part, 501, rotating shaft, 502, first bearing, 503, magnetic steel, 504, second bearing, 601, iron core, 602, copper wire, 603, insulating plate, 604, casing, 801, root, 802, raised part, 6041, casing convex part. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the protection scope of the present invention.

[0027] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0028] Example:

[0029] like Figure 1 and Figure 2 The stainless steel motor shown includes a front cover 1, a rear cover 2, a shaft seal 3, a rear cover 4, a rotor 5 and a stator 6. The stator is sleeved on the rotor, the front end of the stator is fixedly connected to the front cover, the rear end of the stator is fixedly connected to the rear cover, the shaft seal is fixedly connected to the front end of the front cover, and the rear cover is fixedly connected to the rear end of the rear cover. The front cover, the rear cover and the rear cover are all made of stainless steel.

[0030] The axial connection parts between the stator and the front end cover, the axial connection parts between the stator and the rear end cover, and the axial connection parts between the rear end cover and the rear cover are all provided with a first seal 7, which is an O-shaped cross-section sealing ring, and the outer surface of the first seal is higher than the surface of each axial connection part.

[0031] A second sealing member 8 is provided at the radial connection portion between the stator and the front end cover, the radial connection portion between the stator and the rear end cover, and the radial connection portion between the rear end cover and the rear cover.

[0032] like Figure 3 As shown, the rotor includes a rotating shaft 501, a first bearing 502, a magnetic steel 503 and a second bearing 504, and the first bearing, the magnetic steel and the second bearing are sleeved on the rotating shaft.

[0033] like Figure 4 As shown, the stator includes an iron core 601, a copper wire 602, an insulating plate 603 and a housing 604. The copper wire is wound on the iron core, and the housing is sleeved outside the iron core. The housing is made of stainless steel. The front end face of the housing, the front end face of the rear end cover and the front end face of the rear cover are all provided with a left half groove 9 for fixing the second sealing member, and the rear end face of the front end cover, the rear end face of the housing and the rear end cover are all provided with a right half groove 10 for fixing the second sealing member in cooperation with the left half groove. Each left half groove and the corresponding right half groove form a second sealing cavity 11, and the volume of the second sealing cavity is smaller than the volume of the second sealing member.

[0034] like Figure 5 As shown, the second seal includes an integrally formed root 801 and a raised portion 802, the raised portion protruding from the outer ring surface of the root, and the cross-sectional width ratio of the raised portion to the root is 0.4-0.6: 1. The second seal is a seal ring with an inverted T-shaped cross section, and the outer surface of the second seal is flush with the surface of each radial connection part.

[0035] A casing protrusion 6041 with an outer diameter smaller than that of the casing is provided at the front end of the casing, a rear end cover protrusion 201 with an outer diameter smaller than that of the rear end cover is provided at the front end of the rear end cover, a rear cover protrusion 401 with an outer diameter smaller than that of the rear cover is provided at the front end of the rear cover, and a first sealing cavity 12 for fixing a first sealing component is provided on the outer surfaces of the casing protrusion, the rear end cover protrusion and the rear cover protrusion.

[0036] like Figure 6 As shown, a plurality of threaded holes 13 are provided on the end face of the convex part of the casing, a shaft sealing chamber 101 is provided at the front end of the front cover, the end of the shaft sealing chamber is connected to the shaft seal, a plurality of countersunk holes 14 for matching the threaded holes are provided inside the shaft sealing chamber, the countersunk holes and the threaded holes are fixedly connected by hexagon socket screws 15, and the top end of the hexagon socket screws is located in the shaft sealing chamber.

[0037] In order to better seal the shaft seal chamber, a third seal 16 is provided at the axial connection between the shaft seal and the front end cover. The third seal is an O-shaped sealing ring, and its outer surface is higher than the surface of the axial connection.

[0038] This stainless steel motor forms two types of seals at the joint surfaces of the motor parts by setting up the first seal and the second seal. The first seal is located inside the motor and forms a seal at the axial connection part, which is suitable for sealing barriers in corrosive and humid environments. The second seal is located on the surface of the motor and forms a seal at the radial connection part, which is suitable for environments where water pressure cleaning of the motor surface is required. The two types of seals form a double seal to achieve a better sealing effect than the prior art. This stainless steel motor also uses the structure of the stator and the front end cover to allow the front end cover to be replaced without completely disassembling the machine. It should be pointed out that the structure of this stainless steel motor is applicable to various forms of front end cover structures, making it easy to remove and replace the end cover, such as Figure 7 and Figure 8 The front end cover structures shown are all suitable for this stainless steel motor.

[0039] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A stainless steel motor, comprising a front cover, a rear cover, a shaft seal, a rear cover, a rotor and a stator, wherein the stator is sleeved on the rotor, the front end of the stator is fixedly connected to the front cover, the rear end of the stator is fixedly connected to the rear cover, the shaft seal is fixedly connected to the front end of the front cover, and the rear cover is fixedly connected to the rear end of the rear cover, characterized in that: The radial connection parts between the stator and the front end cover, the radial connection parts between the stator and the rear end cover, and the radial connection parts between the rear end cover and the rear cover are all provided with a first seal, the first seal is a sealing ring with an O-shaped cross-section, and the outer surface of the first seal is higher than the surface of each radial connection part; the axial connection parts between the stator and the front end cover, the axial connection parts between the stator and the rear end cover, and the axial connection parts between the rear end cover and the rear cover are all provided with a second seal; the second seal includes an integrally formed root and a protrusion, the protrusion protrudes from the outer ring surface of the root, and the cross-sectional width ratio of the protrusion to the root is 0.4~0.6:1; the second seal is a sealing ring with an inverted T-shaped cross-section, and the outer surface of the protrusion of the second seal away from the root is flush with the surface of the motor.

2. A stainless steel motor according to claim 1, characterized in that: The stator includes an iron core, copper wire, an insulating plate and a casing, the copper wire is wound on the iron core, the casing is sleeved outside the iron core, the front end face of the casing, the front end face of the rear end cover and the front end face of the rear cover are all provided with a left half groove for fixing the second sealing member, the rear end face of the front end cover, the rear end face of the casing and the rear end face of the rear end cover are all provided with a right half groove for matching the left half groove to fix the second sealing member, each left half groove and the corresponding right half groove form a second sealing cavity, and the volume of the second sealing cavity is smaller than the volume of the second sealing member.

3. A stainless steel motor according to claim 2, characterized in that: The front end of the casing is provided with a casing convex portion with an outer diameter smaller than the front end of the casing, the front end of the rear cover is provided with a rear cover convex portion with an outer diameter smaller than the rear cover, and the front end of the rear cover is provided with a rear cover convex portion with an outer diameter smaller than the rear cover. The outer surfaces of the casing convex portion, the rear end cover convex portion and the rear cover convex portion are all provided with a first sealing cavity for fixing the first sealing component.

4. A stainless steel motor according to claim 3, characterized in that: The end face of the convex part of the casing is provided with a plurality of threaded holes, the front end of the front cover is provided with a shaft sealing chamber, the end of the shaft sealing chamber is connected to the shaft seal, the inside of the shaft sealing chamber is provided with a plurality of countersunk holes for matching the threaded holes, the countersunk holes and the threaded holes are fixedly connected by hexagon socket screws, and the top end of the hexagon socket screws is located in the shaft sealing chamber.

5. The stainless steel motor according to claim 1, characterized in that: The rotor comprises a rotating shaft, a first bearing, a magnetic steel and a second bearing, wherein the first bearing, the magnetic steel and the second bearing are sleeved on the rotating shaft.

6. The stainless steel motor according to claim 1, characterized in that: A third sealing member is provided at the radial connection portion between the shaft seal and the front end cover. The third sealing member is a sealing ring with an O-shaped cross section. The outer surface of the third sealing member is higher than the surface of the radial connection portion.

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