Rotary sealing structure for infiltration tank

Abstract

The utility model relates to the technical field of rotary sealing, and discloses a rotary sealing structure for an infiltration tank, which comprises a first coupling, a transmission shaft, a stainless steel pipe, a flange, a gland, a bearing, a sealing gasket, a bearing sleeve, a graphite sealing steel sleeve, a second coupling and a bolt pair, the outer end of the transmission shaft is connected with a driving shaft of a motor speed reducer through a second coupling; a corresponding mounting hole is formed in the infiltration tank, the stainless steel pipe is arranged in the mounting hole, and the stainless steel pipe is hermetically welded with the wall of the infiltration tank; the inner side of the flange is welded with the outer ring of the stainless steel pipe, a sealing gasket is mounted between the bearing sleeve and the flange, and the front end of the bearing sleeve extends into the stainless steel pipe; bearings are installed at the front end and the rear end of the bearing sleeve. Good sealing can be provided, the whole sealing structure is integrally installed, the whole sealing structure can be welded in the infiltration tank in a sealed mode after being externally assembled, installation is convenient, and operation is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary sealing technical field especially relates to a kind of rotary sealing structure for infiltration tank. BACKGROUND

[0002] In mechanical manufacturing industry, infiltration technology is effective measure to solve casting leakage, it is through the method of first vacuumizing casting and then pressurizing, make infiltration liquid immerse into the loose, blowhole and other defects inside of casting, after solidification, fill the micro-pore of casting, to solve leakage. Infiltration tank can be installed with rotary frame and other structures in its interior in later period, to assist better infiltration operation of workpiece. In the installation and use of rotary frame and other structures, under certain pressure, infiltration liquid leakage is prone to occur, affect use, therefore need to adopt sealing structure.

[0003] There are also some rotary sealing structures in prior art, for example, Chinese invention patent with application number CN202311458249.2, name is bidirectional rotary sealing type speed reducer screw seal structure, which discloses a screw seal structure, can effectively reduce the oil pressure of oil seal inside, reduce the failure of sealing structure caused by excessive local oil pressure, improve the reliability of sealing, reduce the maintenance and replacement caused by sealing structure leakage. For example, Chinese invention patent with application number CN202311852513.0, name is a kind of vacuum furnace water-cooled rotary shaft sealing device, which discloses a rotary shaft sealing device, can realize that large diameter rotary support shaft can guarantee not to leak when water cooling, and also does not affect the rotation of shaft. It mainly solves the problem of cooling water leakage during rotary sealing, by pre-tightening gland extruding graphite sealing pad, re-forming sealing effect. UTILITY MODEL CONTENT

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a rotary sealing structure for infiltration tank different from the existing structure, which can provide good sealing, the entire sealing structure is installed integrally, and after external assembly, it can be sealed and welded in the infiltration tank as a whole, convenient to install and easy to operate.

[0005] The utility model discloses a following technical scheme realizes: a kind of rotary sealing structure for infiltration tank, including first coupling, transmission shaft, stainless steel pipe, flange, gland, bearing, sealing washer, bearing sleeve, graphite sealing steel sleeve, second coupling and bolt pair, the first coupling is connected with the inner end of transmission shaft, the outer end of transmission shaft is connected with the drive shaft of motor speed reducer by second coupling;Infiltration tank is provided with corresponding mounting hole, the stainless steel pipe is arranged in the mounting hole, the stainless steel pipe is sealed and welded with the infiltration tank wall;The inner side of the flange is welded with the outer ring of stainless steel pipe, sealing washer is installed between the bearing sleeve and flange, the front end of bearing sleeve is in-depth into stainless steel pipe;The front end and rear end of bearing sleeve are both installed with bearing, the both sides of bearing are both installed with gland, and bearing is pressed in bearing sleeve;The outer side of bearing sleeve is also provided with graphite sealing steel sleeve, and the graphite sealing steel sleeve is connected and fixed between the flange by bolt pair.

[0006] Further, the bearing sleeve includes a bearing sleeve body, bearing mounting holes, a connecting through hole, and an end cover hole. The bearing sleeve body has one bearing mounting hole at each of the front and rear ends. The rear end of the bearing sleeve body has an end cover hole above the bearing mounting hole. The rear end of the bearing sleeve body has a connecting through hole. Each of the two bearing mounting holes at the front and rear ends has one bearing fixed therein. The connecting through hole has one gland installed therein.

[0007] Compared with the prior art, the utility model has the advantages that: in the rotary sealing structure for infiltration tank of the utility model, the transmission shaft is supported by the two bearings at the front and rear ends of the bearing sleeve during rotation. The graphite sealing steel sleeve and the flange are connected and fixed by the bolt pair, so that the graphite sealing steel sleeve, the bearing sleeve, the sealing washer, and the flange are tightly connected, providing good sealing. The entire rotary sealing structure for infiltration tank is integrally installed. After external assembly, it is integrally sealingly welded in the corresponding mounting hole of the infiltration tank, making installation convenient. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a structural schematic diagram of the rotary sealing structure for infiltration tank of the utility model;

[0009] Figure 2 is a structural schematic diagram of the bearing sleeve in the utility model.

[0010] In the figure: first coupling-1; transmission shaft-2; stainless steel pipe-3; flange-4; gland-5; bearing-6; sealing washer-7; bearing sleeve-8; graphite sealing steel sleeve-9; second coupling-10; bolt pair-11; infiltration tank wall-20; motor speed reducer-30; bearing sleeve body-81; bearing mounting hole-82; connecting through hole-83; end cover hole-84. DETAILED DESCRIPTION

[0011] Other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present application. The present application can also be implemented or applied in other different specific embodiments, and various modifications or changes can be made to the details in the present specification without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0012] The present application aims at the defects of the prior art, and provides a rotary sealing structure for an infiltration tank.

[0013] Embodiment one

[0014] The present embodiment provides a rotary sealing structure for an infiltration tank, referring to Figure 1 , which comprises a first coupling 1, a transmission shaft 2, a stainless steel pipe 3, a flange 4, a gland 5, a bearing 6, a sealing gasket 7, a bearing sleeve 8, a graphite sealing steel sleeve 9, a second coupling 10 and a bolt pair 11. The first coupling 1 is connected to the inner end of the transmission shaft 2, and the outer end of the transmission shaft 2 is connected to the driving shaft of the motor reducer 30 through the second coupling 10. The infiltration tank is provided with a corresponding mounting hole, and the stainless steel pipe 3 is arranged in the mounting hole. The stainless steel pipe 3 is sealingly welded with the tank wall 20 of the infiltration tank. The inner side of the flange 4 is welded with the outer ring of the stainless steel pipe 3, and the sealing gasket 7 is arranged between the bearing sleeve 8 and the flange 4. The front end of the bearing sleeve 8 penetrates into the stainless steel pipe 3. The front end and the rear end of the bearing sleeve 8 are both provided with the bearing 6, and the two sides of the bearing 6 are both provided with the gland 5, which presses the bearing 6 in the bearing sleeve 8. The outer side of the bearing sleeve 8 is further provided with the graphite sealing steel sleeve 9, which is connected and fixed with the flange 4 through the bolt pair 11, so that the graphite sealing steel sleeve 9, the bearing sleeve 8, the sealing gasket 7 and the flange 4 are tightly connected.

[0015] Specifically, referring to Figure 1 , Figure 2 , the bearing sleeve 8 comprises a bearing sleeve body 81, a bearing mounting hole 82, a connecting through hole 83 and an end cover hole 84. The front and rear ends of the bearing sleeve body 81 are each provided with one bearing mounting hole 82, and the rear end of the bearing sleeve body 81 is provided with one end cover hole 84 above the bearing mounting hole 82. The rear end of the bearing sleeve body 81 is provided with the connecting through hole 83. Two bearings 6 are fixed in the two bearing mounting holes 82 at the front and rear ends respectively, and one gland 5 is arranged in the connecting through hole 83. The gland 5 is connected with the bearing sleeve body 81 through bolts.

[0016] The utility model discloses a kind of rotary sealing structures for infiltration tank, motor speed reducer 30 is rotated by second connecting shaft 10 with driving shaft 2, and further rotates the device in infiltration tank by first connecting shaft 1 with drive.The rotation of driving shaft 2, provide support by the two bearings 6 of bearing sleeve 8 inner front, rear end, and bearing is pressed solid by using gland 5, graphite sealing steel sleeve 9, graphite sealing steel sleeve 9 is fixed with flange 4 by bolt pair 11 connection, so that graphite sealing steel sleeve 9, bearing sleeve 8, sealing pad 7, flange 4 are tightly connected, can provide good sealing.The whole rotary sealing structure for infiltration tank adopts integrated installation, after external assembly, it is integrally sealed and welded in the corresponding installation hole in infiltration tank, easy to operate, it is convenient to add in infiltration tank later period.

[0017] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, the description of the specification is only for the sake of clarity, the skilled person should consider the specification as a whole, the technical solutions in each embodiment can also be combined appropriately to form other embodiments that the skilled person can understand.

Claims

1. A rotary seal structure for an impregnation pot, characterized by: The utility model relates to a kind of stainless steel pipe drive shafts, including first coupling (1), drive shaft (2), stainless steel pipe (3), flange (4), gland (5), bearing (6), gasket (7), bearing sleeve (8), graphite sealing steel sleeve (9), second coupling (10) and bolt pair (11), the first coupling (1) is connected with the inner end of drive shaft (2), the outer end of drive shaft (2) is connected with the drive shaft of motor speed reducer (30) by second coupling (10); Corresponding mounting hole is provided on the impregnation tank, the stainless steel pipe (3) is arranged in the mounting hole, the stainless steel pipe (3) is sealedly welded with the tank wall (20) of impregnation tank;The inner side of flange (4) is welded with the outer ring of stainless steel pipe (3), gasket (7) is installed between bearing sleeve (8) and flange (4), the front end of bearing sleeve (8) is in stainless steel pipe (3);Bearing (6) is installed in the front end and rear end of bearing sleeve (8), bearing (6) is installed on both sides of bearing (6), and bearing (6) is pressed in bearing sleeve (8);The outer side of bearing sleeve (8) is further provided with graphite sealing steel sleeve (9), and graphite sealing steel sleeve (9) is connected and fixed between flange (4) by bolt pair (11).

2. The rotary seal structure for an impregnation pot according to claim 1, characterized by: The bearing sleeve (8) includes bearing sleeve body (81), bearing mounting hole (82), connecting through hole (83) and end cover hole (84), the front and rear ends of bearing sleeve body (81) are each provided with one bearing mounting hole (82), the rear end of bearing sleeve body (81) is provided with one end cover hole (84) above bearing mounting hole (82), and the rear end of bearing sleeve body (81) is provided with connecting through hole (83);Two bearing mounting holes (82) in the front and rear ends are each fixed with one bearing (6), and one gland (5) is installed in connecting through hole (83).

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