Sealing shell structure of explosion-proof compression motor

Abstract

The utility model discloses a sealing shell structure of an explosion-proof compression motor, which comprises a compression motor shell and a fixed flange plate arranged on the left side of the compression motor shell, a movable flange plate is arranged on the left side of the fixed flange plate, and uniformly distributed positioning rods are in threaded connection with the movable flange plate. The right end of the positioning rod is in threaded connection with the right side of the fixed flange plate, a through hole is formed in the movable flange plate, and an annular sealing sleeve is fixedly installed on the right side of the movable flange plate. According to the utility model, the movable flange plate and the fixed flange plate are precisely aligned and matched, and a core sealing system consists of an annular sealing sleeve and a stepped sealing structure, so that triple protection barriers of rigid contact, conical surface compression and magnetofluid dynamic sealing are formed; meanwhile, the rubber ring on the left side of the fixed flange plate and a wedging groove of the movable flange plate form elastic compensation sealing, and the service life of the sealing piece is remarkably prolonged by matching with the continuous lubricating function of micropores in the outer side of the rectangular metal sealing ring.

Description

Technical Field

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

[0002] In industrial sectors such as petrochemicals, mining, and flammable and explosive gas environments, compressor motors are critical power equipment, and their sealing and explosion-proof performance directly affects production safety. Traditional compressor motor housings typically employ a single flange structure, achieving static sealing through rubber gaskets or metal sealing rings.

[0003] Under high pressure and vibration conditions, sealing failure is prone to occur. At the same time, during use, the sealing reliability is poor and the micro gaps in the metal flange can easily lead to the infiltration of flammable gases. Therefore, those skilled in the art have provided a sealing housing structure for an explosion-proof compressor motor to solve the above-mentioned problems. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a sealed housing structure for an explosion-proof compressor motor.

[0005] To solve the above problems, the present invention adopts the following technical solution;

[0006] A sealed housing structure for an explosion-proof compressor motor includes a compressor motor housing and a fixed flange mounted on its left side. A movable flange is provided on the left side of the fixed flange. The movable flange is threaded with evenly distributed positioning rods. The right end of the positioning rods is threaded to the right side of the fixed flange. A through hole is provided on the movable flange. An annular sealing sleeve is fixedly installed on the right side of the movable flange. The annular sealing sleeve is located inside the fixed flange. A stepped sealing structure is provided on the inner side of the fixed flange.

[0007] The stepped sealing structure includes a rectangular metal sealing ring, which is installed on the inner side of the fixed flange and fits against the outer side of the annular sealing sleeve. A conical sealing ring is fixedly installed on the inner side of the fixed flange, which is located to the right of the rectangular metal sealing ring and contacts the outer side of the annular sealing sleeve. A spiral groove is formed on the inner side of the fixed flange, and the interior of the spiral groove is filled with magnetic fluid.

[0008] As a further description of the above technical solution: two guide plates are connected to both the left and right sides of the fixed flange, and the guide plates are in contact with the movable flange.

[0009] As a further description of the above technical solution: the movable flange is bolted to a sealing protective cover on the side away from the fixed flange, and the sealing protective cover blocks the through hole.

[0010] As a further description of the above technical solution: a rubber ring is fixedly connected to the left side of the fixed flange, and a fitting groove is provided on the right side of the movable flange. The rubber ring is located inside the fitting groove and fits against the inner wall of the fitting groove.

[0011] As a further description of the above technical solution: the outer side of the rectangular metal sealing ring is provided with uniformly distributed micropores, and the interior of the micropores is filled with lubricant.

[0012] As a further description of the above technical solution: the fixed flange is provided with evenly distributed pressure relief channels.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] In this invention, through the precise alignment and fit between the movable flange and the fixed flange, the core sealing system consists of an annular sealing sleeve and a stepped sealing structure, forming a triple protective barrier of rigid contact, conical surface compression, and magnetic fluid dynamic sealing. At the same time, the rubber ring on the left side of the fixed flange and the mating groove of the movable flange form an elastic compensation seal. Combined with the continuous lubrication function of the micropores on the outer side of the rectangular metal sealing ring, the service life of the seal is significantly improved. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a front view cross-sectional structural diagram of the fixed flange of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0018] Figure 4 This is a three-dimensional structural diagram of the fixed flange of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the movable flange of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Compressor motor housing; 2. Fixed flange; 3. Movable flange; 4. Positioning rod; 5. Through hole; 6. Annular sealing sleeve; 7. Stepped sealing structure; 701. Rectangular metal sealing ring; 702. Conical sealing ring; 703. Spiral groove; 704. Magnetohydrodynamic fluid; 8. Guide plate; 9. Sealing protective cover; 10. Rubber ring; 11. Fitting groove; 12. Micropore; 13. Pressure relief channel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0023] Please see Figure 1-5 In this utility model, a sealing housing structure for an explosion-proof compressor motor includes a compressor motor housing 1 and a fixed flange 2 installed on its left side. A movable flange 3 is provided on the left side of the fixed flange 2. The movable flange 3 is threaded with evenly distributed positioning rods 4. The right end of the positioning rods 4 is threaded to the right side of the fixed flange 2. A through hole 5 is provided on the movable flange 3. An annular sealing sleeve 6 is fixedly installed on the right side of the movable flange 3. The annular sealing sleeve 6 is located inside the fixed flange 2. A stepped sealing structure 7 is provided on the inner side of the fixed flange 2.

[0024] The stepped sealing structure 7 includes a rectangular metal sealing ring 701, which is installed on the inner side of the fixed flange 2 and fits against the outer side of the annular sealing sleeve 6. A conical sealing ring 702 is fixedly installed on the inner side of the fixed flange 2. The conical sealing ring 702 is located to the right of the rectangular metal sealing ring 701 and contacts the outer side of the annular sealing sleeve 6. A spiral groove 703 is opened on the inner side of the fixed flange 2, and the interior of the spiral groove 703 is filled with magnetic fluid 704.

[0025] A rubber ring 10 is fixedly connected to the left side of the fixed flange 2, and a mating groove 11 is provided on the right side of the movable flange 3. The rubber ring 10 is located inside the mating groove 11 and fits against the inner wall of the mating groove 11.

[0026] The rectangular metal sealing ring 701 has uniformly distributed micropores 12 on its outer side, and the inside of the micropores 12 is filled with lubricant.

[0027] The fixed flange 2 has evenly distributed pressure relief channels 13, which are sealed by rupture discs.

[0028] During installation, the operator first aligns the movable flange 3 with the fixed flange 2 and tightens the threads using the evenly distributed positioning rods 4, so that the drive shaft passes precisely through the through hole 5 and maintains stable operation. During this process, the rubber ring 10 enters the interior of the mating groove 11.

[0029] In terms of sealing, the annular sealing sleeve 6 on the right side of the movable flange 3 is tightly embedded inside the fixed flange 2, forming multiple protections with the stepped sealing structure 7. For example, the rigid sealing layer is tightly fitted to the outside of the annular sealing sleeve 6 through the rectangular metal sealing ring 701, providing basic sealing protection. Subsequently, the conical surface is used for compression sealing. The conical sealing ring 702 applies radial pressure to the annular sealing sleeve 6 through the inclined surface structure, which significantly improves the sealing effect. At the same time, the magnetic fluid 704 filled in the spiral groove 703 forms an adaptive sealing layer under the action of the magnetic field, which can effectively block the penetration of high-pressure gas.

[0030] Furthermore, the rubber ring 10 on the left side of the fixed flange 2 is precisely embedded in the fitting groove 11 of the movable flange 3. Through elastic deformation, it compensates for assembly tolerances and vibration displacement. The micropores 12 on the outer side of the rectangular metal sealing ring 701 continuously release lubricant, which reduces friction loss and extends the service life of the seal.

[0031] When the internal pressure of the casing exceeds the threshold, the rupture disc in the pressure relief channel 13 ruptures first to achieve directional pressure relief. The stepped sealing structure, combined with the metal and rubber composite seal, effectively blocks the propagation path of the explosion shock wave.

[0032] In this invention, through the precise alignment and fit between the movable flange 3 and the fixed flange 2, the core sealing system consists of an annular sealing sleeve 6 and a stepped sealing structure 7, forming a triple protective barrier of rigid contact, conical surface compression, and dynamic sealing by magnetic fluid 704. At the same time, the rubber ring 10 on the left side of the fixed flange 2 and the mating groove 11 of the movable flange 3 form an elastic compensation seal. Combined with the continuous lubrication function of the micropores 12 on the outer side of the rectangular metal sealing ring 701, the service life of the seal is significantly improved.

[0033] Please see Figure 1 and 4 In this case, two guide plates 8 are connected to both the left and right sides of the fixed flange 2, and the guide plates 8 are in contact with the movable flange 3.

[0034] In this invention, the guide plates 8 added to the left and right sides of the fixed flange 2 are precisely matched with the movable flange 3 to ensure the axial alignment accuracy during assembly and greatly reduce the risk of sealing failure caused by installation deviation.

[0035] Please see Figure 1 and 2 Among them, the movable flange 3 is connected to a sealing protective cover 9 by bolts on the side away from the fixed flange 2, and the sealing protective cover 9 blocks the through hole 5.

[0036] In this utility model, the sealing protective cover 9 installed on the outside of the movable flange 3 is fastened with bolts to form a second physical barrier, which not only prevents external foreign objects from entering the drive shaft through the through hole 5, but also avoids leakage of internal lubricating medium.

[0037] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A sealed housing structure for an explosion-proof compressor motor, comprising a compressor motor housing (1) and a fixed flange (2) mounted on its left side, characterized in that: A movable flange (3) is provided on the left side of the fixed flange (2). The movable flange (3) is threaded with evenly distributed positioning rods (4). The right end of the positioning rods (4) is threaded to the right side of the fixed flange (2). A through hole (5) is provided on the movable flange (3). An annular sealing sleeve (6) is fixedly installed on the right side of the movable flange (3). The annular sealing sleeve (6) is located inside the fixed flange (2). A stepped sealing structure (7) is provided on the inner side of the fixed flange (2). The stepped sealing structure (7) includes a rectangular metal sealing ring (701), which is installed on the inner side of the fixed flange (2) and fits against the outer side of the annular sealing sleeve (6). A conical sealing ring (702) is fixedly installed on the inner side of the fixed flange (2). The conical sealing ring (702) is located on the right side of the rectangular metal sealing ring (701) and contacts the outer side of the annular sealing sleeve (6). A spiral groove (703) is opened on the inner side of the fixed flange (2), and the interior of the spiral groove (703) is filled with magnetic fluid (704).

2. The sealed housing structure of an explosion-proof compressor motor according to claim 1, characterized in that: The fixed flange (2) has two guide plates (8) connected to both its left and right sides, and the guide plates (8) are in contact with the movable flange (3).

3. The sealed housing structure of an explosion-proof compressor motor according to claim 1, characterized in that: The movable flange (3) is bolted to a sealing cover (9) on the side away from the fixed flange (2), and the sealing cover (9) blocks the through hole (5).

4. The sealed housing structure of an explosion-proof compressor motor according to claim 1, characterized in that: A rubber ring (10) is fixedly connected to the left side of the fixed flange (2), and a fitting groove (11) is provided on the right side of the movable flange (3). The rubber ring (10) is located inside the fitting groove (11) and fits against the inner wall of the fitting groove (11).

5. The sealed housing structure of an explosion-proof compressor motor according to claim 1, characterized in that: The rectangular metal sealing ring (701) has uniformly distributed micropores (12) on its outer side, and the micropores (12) are filled with lubricant.

6. The sealed housing structure of an explosion-proof compressor motor according to claim 1, characterized in that: The fixed flange (2) has evenly distributed pressure relief channels (13).

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