Explosion-proof motor

Abstract

The utility model provides an explosion-proof motor. The explosion-proof motor comprises a rotor, a front shell and a rear shell, the rear end of the front shell is fixed with the front end of the rear shell, and the front shell and the rear shell form a closed space for accommodating the stator and the rotor; the stator is fixed on the inner side walls of the front shell and the rear shell, the rotor is rotatably connected in the stator, and one end of a rotating shaft on the rotor movably penetrates through the front end of the front shell and then extends out of the front shell; a notch is formed in the side wall of the front end of the rear shell and used for allowing a leading-out wire of the stator to penetrate through, and a sealing structure is arranged between the leading-out wire and the notch; according to the utility model, flammable and explosive articles can be effectively prevented from being contacted with the rotor and the stator of the motor, so that the flammable and explosive articles can be prevented from being burnt or even exploded when a coil in the motor is ignited due to faults, and potential safety hazards are eliminated.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to an explosion-proof motor. Background Technology

[0002] Electric motors are commonly used drive components. Currently, none of the electric motors on the market have explosion-proof functions. When existing electric motors are used in flammable and explosive environments, if the coils in the motor malfunction and spark, it can easily cause flammable and explosive materials to burn or even explode, thus posing a great safety hazard. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an explosion-proof motor that can effectively prevent flammable and explosive materials from coming into contact with the rotor and stator of the motor. In the event of arcing in the coils of the motor due to a fault, it can also prevent the combustion or even explosion of flammable and explosive materials, thereby eliminating safety hazards.

[0004] This utility model provides an explosion-proof motor, including a rotor, a front housing, and a rear housing; the rear end of the front housing is fixed to the front end of the rear housing, and the front housing and the rear housing form a closed space for accommodating the stator and the rotor; the stator is fixed on the inner sidewall of the front housing and the rear housing, and the rotor is rotatably connected in the stator, with one end of the rotor shaft moving through the front end of the front housing and extending out of the front housing; a notch is provided on the sidewall of the front end of the rear housing for the stator lead wire to pass through, and a sealing structure is provided between the lead wire and the notch.

[0005] By adopting the above-mentioned structure, this utility model can enclose the stator and rotor in the closed space formed by the front and rear housings through the cooperation of the front and rear housings. This effectively prevents flammable and explosive materials from coming into contact with the rotor and stator of the motor. In the event of arcing in the coils of the motor due to a fault, it can also prevent the combustion or even explosion of flammable and explosive materials, thereby eliminating safety hazards.

[0006] In one possible implementation, the rear end of the front housing abuts against the front end of the rear housing; a plurality of first lugs are circumferentially provided on the outer wall of the rear end of the front housing, and a plurality of second lugs are circumferentially provided on the outer wall of the front end of the rear housing, each second lug corresponding to one of the first lugs, and the front end of each second lug abuts against the rear end of the corresponding first lug; the front housing and the rear housing are fastened by bolts passing through the second lugs and threadedly connected to the first lugs; with this structure, the front housing and the rear housing can be reliably fixed by the cooperation of the first lugs, the second lugs and the bolts, and since the rear end of the front housing abuts against the front end of the rear housing, the gap between the front housing and the rear housing can be sealed.

[0007] In one possible implementation, the sealing structure includes a sealing plug made of rubber material, with a groove on the side wall of the sealing plug. The sealing plug is fitted into the notch, and the groove engages with the edge of the notch to form a tight seal. The front end of the sealing plug is tightly sealed against the rear end of the front housing. A wire hole is provided on the sealing plug, and a lead wire passes through the wire hole. The outer side wall of the lead wire is tightly sealed against the wall of the wire hole. By adopting this structure, the sealing plug can reliably seal the gap between the lead wire and the notch. Attached Figure Description

[0008] Figure 1 This is the first three-dimensional structural schematic diagram of the present invention;

[0009] Figure 2 This is a second three-dimensional structural schematic diagram of the present invention;

[0010] Figure 3 This is a schematic diagram of the three-dimensional structure of the sealing plug. Detailed Implementation

[0011] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0012] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0013] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0014] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] See Figure 1-3As shown in the figure, this application discloses an explosion-proof motor, including a rotor, a front housing 1, and a rear housing 2; the rear end of the front housing 1 is fixed to the front end of the rear housing 2, and the front housing 1 and the rear housing 2 form a closed space for accommodating the stator and the rotor; the stator is fixed on the inner sidewall of the front housing 1 and the rear housing 2, and the rotor is rotatably connected in the stator, with one end of the rotor shaft moving through the front end of the front housing 1 and extending out of the front housing 1; a notch 21 is provided on the sidewall of the front end of the rear housing 2, the notch 21 is used for the stator lead wire 3 to pass through, and a sealing structure is provided between the lead wire 3 and the notch 21.

[0016] The rear end of the front housing 1 abuts against the front end of the rear housing 2; several first lugs 11 are circumferentially arranged on the outer wall of the rear end of the front housing 1, and several second lugs 22 are circumferentially arranged on the outer wall of the front end of the rear housing 2. Each second lug 22 is corresponding to one of the first lugs 11, and the front end of each second lug 22 abuts against the rear end of the corresponding first lug 11. The front housing 1 and the rear housing 2 are fastened by bolts 4 that pass through the second lugs 22 and are threadedly connected to the first lugs 11. With this structure, the front housing and the rear housing can be reliably fixed by the cooperation of the first lugs, the second lugs and the bolts. And because the rear end of the front housing abuts against the front end of the rear housing, the gap between the front housing and the rear housing can be sealed.

[0017] The sealing structure includes a sealing plug 5 made of rubber material. A groove 51 is provided on the side wall of the sealing plug 5. The sealing plug 5 is fitted into the notch 21. The groove 51 and the edge of the notch 21 are engaged and tightly sealed. The front end of the sealing plug 5 is tightly sealed with the rear end of the front housing 1. A wire hole 52 is provided on the sealing plug 5. The lead wire 3 passes through the wire hole 52. The outer side wall of the lead wire 3 is tightly sealed with the wall of the wire hole 52. With this structure, the sealing plug can reliably seal the gap between the lead wire and the notch.

[0018] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An explosion-proof electric machine characterized by: The application relates to a motor, which comprises a rotor, a front shell (1) and a rear shell (2); the rear end of the front shell (1) is fixed to the front end of the rear shell (2), the front shell (1) and the rear shell (2) form a closed space for accommodating a stator and the rotor; the stator is fixed to the inner side wall of the front shell (1) and the rear shell (2), the rotor is rotationally connected in the stator, one end of a rotating shaft on the rotor is movably penetrated through the front end of the front shell (1) and extends out of the front shell (1); a notch (21) is arranged on the side wall of the front end of the rear shell (2), the notch (21) is used for allowing a lead-out wire (3) of the stator to pass through, and a sealing structure is arranged between the lead-out wire (3) and the notch (21).

2. The explosion-proof electric machine of claim 1, wherein: The rear end of the front shell (1) abuts against the front end of the rear shell (2); a plurality of first lugs (11) are circumferentially arranged on the outer wall of the rear end of the front shell (1), a plurality of second lugs (22) are circumferentially arranged on the outer wall of the front end of the rear shell (2), each second lug (22) is arranged in correspondence with one first lug (11), the front end of each second lug (22) abuts against the rear end of the first lug (11) at the corresponding position, and the front shell (1) and the rear shell (2) are fastened by bolts (4) which are arranged in the second lugs (22) and are threadedly connected with the first lugs (11).

3. The explosion-proof electric machine according to claim 1 or 2, characterized in that: The sealing structure comprises a sealing plug (5) made of rubber material, a clamping groove (51) is arranged on the side wall of the sealing plug (5), the sealing plug (5) is embedded at the notch (21), the clamping groove (51) is clamped and tightly sealed with the edge of the notch (21), and the front end of the sealing plug (5) is tightly sealed with the rear end of the front shell (1); a wire hole (52) is arranged on the sealing plug (5), the lead-out wire (3) is arranged in the wire hole (52), and the outer side wall of the lead-out wire (3) is tightly sealed with the hole wall of the wire hole (52).

Images