CN211830408U - Pressure relief device for end cover of motor - Google Patents

Abstract

The utility model discloses a motor end cover pressure relief device aims at overcoming the problem that current motor caused the motor to embrace the axle when pressure differential appears because of the inner chamber, and its technical essential lies in, including protection casing, clamp plate and sealed the pad, sealed the port department of installing at the inner chamber of motor, sealed pad outer cover has the protection casing. The gasket is secured to a port of the interior cavity of the motor by a mounting bolt. The pressure plate is an annular pressure plate. The utility model discloses an outside protection casing makes the motor protection grade reach IP55 with sealed the pad, when the pressure differential appears in the inner chamber of motor, sealed pad can break because of inner chamber outer chamber pressure differential, causes the inner chamber pressure balance of motor, and bearing lubricating grease can not be because of the motor inner chamber is inhaled to the negative pressure, and the motor can not cause the axle of embracing.

Description

Pressure relief device for end cover of motor

Technical Field

The utility model relates to a technical field is made to the motor, concretely relates to motor end cover pressure relief device.

Background

In an accident state, under the condition that the pressure difference between the inner cavity and the outer cavity of the motor occurs, if the decompression of the inner cavity and the outer cavity of the motor is not instantly realized, bearing lubricating grease is likely to be sucked into the inner cavity of the motor by negative pressure, so that the shaft wrapping phenomenon can be generated in a short time by the motor, the motor is stopped immediately once the shaft wrapping phenomenon occurs, and the motor is not allowed to stop under some special environments, so that the research on a decompression structure (hole) and a plugging material is very necessary.

Disclosure of Invention

In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is to provide a motor end cover pressure relief device. The utility model discloses an outside protection casing makes the motor protection grade reach IP55 with sealed the pad, when the pressure differential appears in the inner chamber of motor, sealed pad can break because of inner chamber outer chamber pressure differential, causes the inner chamber pressure balance of motor, and bearing lubricating grease can not be because of the motor inner chamber is inhaled to the negative pressure, and the motor can not cause the axle of embracing.

In order to achieve the purpose, the utility model provides a motor end cover pressure relief device, the technical essential of adoption lies in, including protection casing, clamp plate and sealed the pad, sealed the port department at the inner chamber of motor of installing, sealed pad outer cover has the protection casing.

As a further improvement of the present invention, the gasket is fixed to the port of the inner chamber of the motor by a mounting bolt.

As a further improvement of the utility model, the pressing plate is an annular pressing plate.

The utility model discloses following technological effect has:

1. the utility model discloses a port department at the inner chamber of motor has set up sealed the pad, and when the pressure differential appeared in the inner chamber of motor, the pressure of inner chamber can make sealed the pad damaged, so bearing grease can not be because of the inner chamber of negative pressure inspiration motor in, the phenomenon that causes the axle just can not appear in the motor.

2. The utility model discloses an outside protection casing that sets up, when the motor normal operating, protection casing and sealed pad can make the motor protection level reach IP 55.

Drawings

Figure 1 is a schematic structural view of the present invention,

as shown in the figure, 1 is a protective cover, 2 is a sealing gasket, 3 is a pressure plate, 4 is a mounting bolt, and 5 is an inner cavity.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "radial", "axial", "circumferential", and the like, indicate orientations and positional relationships based on the orientation or positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but 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. It should be noted that unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; 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 invention can be understood in specific cases to those skilled in the art. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Some exemplary embodiments of the invention have been described for illustrative purposes, and it is to be understood that the invention may be practiced otherwise than as specifically described.

Fig. 1 shows a schematic structural diagram of the present invention in an embodiment.

The utility model discloses a motor end cover pressure relief device, including protection casing 1, sealed pad 2 and clamp plate 3, sealed pad 2 is installed in the port department of the inner chamber 5 of motor, sealed pad 2 outer cover has protection casing 1.

When no pressure difference exists between the inner cavity and the outer cavity of the motor, the protection level of the motor reaches IP55 through the external protective cover 1 and the sealing gasket 2, when the motor is in an accident state, the sealing gasket 2 is broken due to different pressures of the inner cavity and the outer cavity of the motor, so that the pressure of the inner cavity and the outer cavity of the motor is balanced, bearing lubricating grease cannot be sucked into the inner cavity 5 of the motor due to negative pressure, and the phenomenon that the motor is held in the shaft is avoided.

In some embodiments, the gasket 2 is fixed to the port of the internal cavity 5 of the motor by means of mounting bolts 4. The operation is convenient and fast, and the implementation is convenient.

In some embodiments, the pressing plate 3 is annular, the edge of the annular pressing plate 3 and the edge of the sealing gasket 2 are contacted to install the sealing gasket 2 at the port of the inner cavity 5 of the motor, the pressing plate 3 is annular, an open structure can be formed in the middle of the pressing plate 3, the sealing gasket 4 cannot be blocked, and the sealing gasket 4 is damaged when the pressure of the inner cavity and the outer cavity is different, so that the pressure balance of the inner cavity and the outer cavity of the motor is realized, and the bearing lubricating grease is prevented from being sucked into the inner cavity 5 of the motor due to the negative pressure of the inner cavity 5 of the motor.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (3)

1. The utility model provides a motor end cover pressure relief device, its characterized in that, includes protection casing (1), sealed pad (2) and clamp plate (3), sealed pad (2) are installed in the port department of the inner chamber (5) of motor, sealed pad (2) dustcoat has protection casing (1).

2. Motor end cap pressure relief device according to claim 1, characterized in that said gasket (2) is fixed to the port of the inner cavity (5) of the motor by means of mounting bolts (4).

3. The motor end cap pressure relief device of claim 1 or 2 wherein said pressure plate (3) is an annular pressure plate.

Images