CN213484636U - Double-oil-seal waterproof motor - Google Patents

Abstract

The utility model relates to a two oil blanket waterproof motor, including motor body, the last handhole door that is fixed with of motor body, be fixed with water slinging ring and handhole door apron on the handhole door respectively, the handhole door with the water slinging ring encloses and establishes the first cavity of formation, the handhole door with the handhole door apron enclose establish form with the second cavity of first cavity intercommunication, the second cavity with motor body inner space junction oil blanket. The utility model discloses two oil blanket waterproof motor is through protecting the motor sealing member to reach the effect that promotes motor protective properties, it prevents outside silt through a series of mazes like cavity seal earlier, impurity such as water is close to motor seal structure, adopt two oil blanket to add grease simultaneously, the handhole door sets up the hole that leaks, promote motor seal structure reliability, and simple structure, the process easily realizes, through the water spray test, the inside water inlet condition that does not have of motor, the oil blanket is lossless, the inside sign of intaking that does not have of oil blanket surface handhole door, it is anticipated to accord with the design.

Description

Double-oil-seal waterproof motor

Technical Field

The application belongs to the field of motor production and manufacturing, and particularly relates to a double-oil-seal waterproof motor.

Background

When the motor is in operation, impurities such as external silt, dust, water and the like can damage the sealing structure of the motor, so that the motor is subjected to water inflow and silt inflow, and faults such as insulation, machine burning and the like are caused. Most electric motors are not waterproof, largely because their operating environment does not require waterproofing, and waterproof materials limit overall performance while increasing costs that are generally only valuable for certain applications, such as pumps and fluid handling, off-road vehicles, and other applications where liquid contact with the motor may occur. Due to water and solvents, motion control components are often exposed to the risk of corrosion and failure, and waterproof motors are key components to address the problem of water-induced motor failure. Many methods of waterproofing will restrict the flow of air to the motor, which will negatively impact the maximum power output of the motor.

For a motor system with a flange directly driven by a motor, the problem of water inflow from the flange end can occur in the running process of the motor. If the water is not discharged and enters the motor, insulation failure can occur, burning can be caused seriously, and safety problem is caused. This requires the design of a motor system that is well water-proof, while ensuring that the motor power is not affected.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the waterproof motor with the double oil seals is provided for solving the problem of insufficient waterproof performance of the motor in the prior art.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a two oil blanket waterproof motor, includes the motor body, be fixed with the handhole door in the motor body, be fixed with water slinging ring and handhole door apron on the handhole door respectively, the handhole door with the water slinging ring encloses to establish and forms first cavity, the handhole door with the handhole door apron encloses to establish form with the second cavity of first cavity intercommunication, the second cavity with motor body inner space junction oil blanket.

In one embodiment, the hole cover is provided with a groove, the water slinging ring cover is arranged on the groove, and the first cavity is the groove body.

In one embodiment, an inner hole is formed in the middle of the hole cover, the groove is located on the outer side of the hole cover, the second cavity is connected with the inner space of the motor main body through the inner hole, and an oil seal is formed at the connection position.

In one embodiment, the oil seal is a fluororubber oil seal.

In one embodiment, the oil seal is a single-lip or double-lip oil seal with polytetrafluoroethylene coated surface.

In one embodiment, lubricating grease is added in the middle of the double-lip oil seal.

In one embodiment, the end part of the water throwing ring is provided with a chamfer, and the chamfer covers the hole cover plate.

In one embodiment, the bottom end of the hole cover is provided with a water leakage hole.

The utility model has the advantages that: the utility model discloses two oil blanket waterproof motor is through protecting the motor sealing member to reach the effect that promotes motor protective properties, it prevents outside silt through a series of mazes like cavity seal earlier, impurity such as water is close to motor seal structure, adopt two oil blanket to add grease simultaneously, the handhole door sets up the hole that leaks, promote motor seal structure reliability, and simple structure, the process easily realizes, through the water spray test, the inside water inlet condition that does not have of motor, the oil blanket is lossless, the inside sign of intaking that does not have of oil blanket surface handhole door, it is anticipated to accord with the design.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

Fig. 1 is a cross-sectional view of a double oil seal waterproof motor according to an embodiment of the present application.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, a double oil seal waterproof motor includes a motor body 1, a hole cover 2 is fixed on the motor body 1, a water slinger 3 and a hole cover plate 4 are respectively fixed on the hole cover 2, the hole cover 2 and the water slinger 3 are enclosed to form a first cavity, the hole cover 2 and the hole cover plate 4 are enclosed to form a second cavity communicated with the first cavity, and the joint of the second cavity and the inner space of the motor body 1 is oil sealed. The double-oil-seal waterproof motor adopts an oil seal lip-to-lip installation mode, high-temperature grease is filled into the middle cavity, the service life of an oil seal can be prolonged, and the hole cover 2, the hole cover plate 4 and the water throwing ring 3 form a waterproof system.

In one embodiment, the hole cover 2 is provided with a groove, the water slinging ring 3 is covered on the groove, and the first cavity is a groove body. In one embodiment, the hole cover 2 is provided with an inner hole in the middle, the groove is positioned on the outer side of the hole cover 2, the second cavity is connected with the inner space of the motor body 1 through the inner hole, and the joint is oil-sealed. The oil seal is arranged in a hole cover structure, the inner hole of the hole cover 2 is provided with double oil seals, the outer side of the hole cover is provided with a groove, and the groove and the water throwing ring 3 arranged on the flange form a first labyrinth seal structure. The water throwing ring 3 is arranged on the flange, rotates along with the flange, external water is difficult to enter the groove, even if the external water enters the groove, the external water is blocked by a second labyrinth seal structure formed by the hole cover 2 and the hole cover baffle 4, so that the water entering the groove flows away along the lower part of a circumferential surface flow channel measured in the groove of the hole cover 2, and the external water is effectively prevented from entering the motor through an oil seal. The cover plate 4 on the right side of the cover 2 forms a labyrinth seal with the cover 2 to prevent external water from getting close to oil, so that the cover plate 4 needs to form an effective seal with the end face on the right side of the cover 2 when being assembled. In addition, the hole cover baffle 4 also has the function of preventing the oil seal 5 from moving outwards and preventing the abrasion and damage of rotating parts.

Common materials for the oil seal 5 are: nitrile rubber, fluororubber, silicone rubber, acid ester rubber, polyurethane, polytetrafluoroethylene, and the like. The material of the oil seal must be selected taking into account the compatibility of the material with the working medium, the adaptability to the working temperature range and the ability of the lip to follow the rotating shaft when rotating at high speed. In one embodiment, the oil seal 5 is a fluororubber oil seal. The fluororubber oil seal has the characteristics of high temperature resistance, oil resistance, ozone resistance, corrosion resistance of various chemicals and the like.

In one embodiment, the oil seal 5 adopts a single-lip or double-lip oil seal with the surface coated with polytetrafluoroethylene, so that the interior of the motor is effectively protected.

In one embodiment, grease is added in the middle of the double-lip oil seal. Lubricating grease is added in the middle of the double-lip oil seal, so that the lip of the oil seal is effectively lubricated, and the service life of the oil seal is greatly prolonged. The grease base is selected according to the conditions of use, for example, a lithium grease is selected. The lithium-based lubricating grease has good heat resistance and water resistance, the consistency is rarely changed when the temperature is changed, the applicable temperature range is wide, and the lubricating performance of the lithium-based lubricating grease is not reduced when the lithium-based lubricating grease meets water.

In one embodiment, the end of the water slinger 3 is provided with a chamfer which covers the cover plate 4. The water slinging ring 3 is designed with a chamfer, the position of the chamfer exceeds the baffle 4 of the hole cover, and even if the motor enters water, the water can hardly enter the inside through the position of the chamfer.

In one embodiment, the bottom of the hole cover 2 is provided with a water leakage hole. The hole cover 2 is designed with a water leakage hole installed at the lowermost end so that water introduced into the vicinity of the oil seal 5 can be leaked therefrom.

The waterproof system forms a plurality of protections: for the first protection, the water throwing ring 3 is arranged on the flange and can rotate at a high speed along with the flange, and when water is about to enter from the outside, most of the water is thrown out by the high-speed rotation of the water throwing ring 3; the second protection, when some water enters the water slinging ring 3, the water flows along the groove, the outer diameter of the cover plate 4 of the hole cover is larger than that of the circular groove of the hole cover 2, and the cover plate 4 of the hole cover blocks the water, so that the water flows downwards and flows out from the edge of the water slinging ring 3; a third protection, wherein when the second protection does not completely block water and little water enters the oil seal 5, the oil seal 5 is used as protection, and the water flowing in can flow out along the notch on the end face of the hole cover 2; the fourth protection, the first three lines of defence have been can keep off water outside the motor completely, for the guarantee of the one more layer, when first oil blanket 5 became invalid, the motor was because long-time work, and oil blanket 5 department has formed an oil film, also can block water completely. The four protection can completely block water, and the waterproof performance of the motor is ensured.

The utility model has the advantages that: the utility model discloses two oil blanket waterproof motor is through protecting the motor sealing member to reach the effect that promotes motor protective properties, it prevents outside silt through a series of mazes like cavity seal earlier, impurity such as water is close to motor seal structure, adopt two oil blanket to add grease simultaneously, the handhole door sets up the hole that leaks, promote motor seal structure reliability, and simple structure, the process easily realizes, through the water spray test, the inside water inlet condition that does not have of motor, the oil blanket is lossless, the inside sign of intaking that does not have of oil blanket surface handhole door, it is anticipated to accord with the design.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (8)

1. The utility model provides a two oil blanket waterproof motor, its characterized in that, includes the motor body, be fixed with the handhole door in the motor body, be fixed with water slinging ring and handhole door apron on the handhole door respectively, the handhole door with the water slinging ring encloses to establish and forms first cavity, the handhole door with the handhole door apron encloses to establish form with the second cavity of first cavity intercommunication, the second cavity with motor body inner space junction oil blanket.

2. The double-oil-seal waterproof motor as claimed in claim 1, wherein a groove is formed in the hole cover, the water slinging ring is covered on the groove, and the first cavity is a groove body of the groove.

3. The double-oil-seal waterproof motor as claimed in claim 2, wherein an inner hole is formed in the middle of the hole cover, the groove is located on the outer side of the hole cover, the second cavity is connected with the inner space of the motor body through the inner hole, and the joint is oil-sealed.

4. A double oil seal waterproof motor according to claim 1, wherein the oil seal is a fluororubber oil seal.

5. The double-oil-sealed waterproof motor according to claim 1, wherein the oil seal is a single-lip or double-lip oil seal with the surface coated with polytetrafluoroethylene.

6. The double-oil-seal waterproof motor according to claim 5, wherein lubricating grease is added in the middle of the double-lip oil seal.

7. The double-oil-sealed waterproof motor according to claim 1, wherein the end of the water slinging ring is provided with a chamfer, and the chamfer wraps the hole cover plate.

8. The double-oil-seal waterproof motor as claimed in claim 1, wherein a water leakage hole is formed at the bottom end of the hole cover.

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