Sealing structure for transmission shaft of coating machine

Abstract

The utility model relates to a sealing structure for a transmission shaft of a coating machine. The sealing structure comprises an inflatable seal mounting block, a bearing mounting seat, a deep groove ball bearing, an O-shaped ring, a lip-shaped shaft seal and an inflatable seal, the bearing mounting seat is mounted on the inflatable sealing mounting block, and the deep groove ball bearing is mounted between the inflatable sealing mounting block and the bearing mounting seat; the O-shaped ring is connected to the side wall, connected with the bearing mounting seat, of the inflatable sealing mounting block; the lip-shaped shaft seal is arranged on the inner side of the bearing mounting seat, and the inflatable seal is arranged on the inner side of the inflatable seal mounting block; a transmission shaft penetrates through the inflation seal installation block and the bearing installation base, and the outer wall of the transmission shaft makes contact with the lip-shaped shaft seal and the inflation seal. The sealing structure of the transmission shaft of the coating machine aims to overcome the existing defects, the mechanical structure is simple, and the machining difficulty and the manufacturing cost are reduced to a great extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coating machine transmission shaft sealing structure. BACKGROUND

[0002] In the film coating process of tablets, there may be toxic or high-activity drugs, so there is a requirement for closed design. Unlike other structures of the coating machine, the transmission structure needs to pass out from the internal closed area and be connected with the motor drive of the technical area, so how to ensure its sealing is particularly crucial.

[0003] However, the existing transmission shaft sealing structure has the problems of complex structure, difficult processing, high manufacturing cost, and inability to quickly disassemble and inspect the transmission shaft, therefore, a coating machine transmission shaft sealing structure is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a coating machine transmission shaft sealing structure which overcomes the defects of the prior art and has the advantages of simple mechanical structure, greatly reduced difficulty of mechanical processing and manufacturing cost.

[0005] The technical scheme for achieving the above object is as follows: a coating machine transmission shaft sealing structure, comprising an inflation sealing mounting block, a bearing mounting seat, a deep groove ball bearing, an O-shaped ring, a lip seal and an inflation seal.

[0006] The bearing mounting seat is installed on the inflation sealing mounting block, and the deep groove ball bearing is installed between the inflation sealing mounting block and the bearing mounting seat. The side wall, where the inflation sealing mounting block is connected with the bearing mounting seat, is connected with the O-shaped ring. The inner side of the bearing mounting seat is provided with the lip seal, and the inner side of the inflation sealing mounting block is provided with the inflation seal. The transmission shaft penetrates through the inflation sealing mounting block and the bearing mounting seat, and the outer wall is in contact with the lip seal and the inflation seal.

[0007] Preferably, the inflation sealing mounting block and the bearing mounting seat are connected by screws.

[0008] Preferably, a sealing groove is arranged between the bearing mounting seat and the matching surface of the inflation sealing mounting block to place the O-shaped ring.

[0009] Preferably, the inflation sealing mounting block is connected to the inner box body by welding.

[0010] Preferably, the side of the bearing mounting seat close to the inflation sealing mounting block is provided with a stepped groove, and the deep groove ball bearing is located in the stepped groove.

[0011] The utility model discloses a beneficial effect is: this coating machine transmission shaft sealing structure has solved the problem that closed coating machine transmission shaft is difficult to realize closed and is not favorable to transmission shaft dismounting maintenance. Mechanical structure is relatively simplified, and the degree of difficulty of machining and manufacturing cost are reduced greatly. Meanwhile, the use of the fixed structure is also favorable to the quick dismounting of transmission shaft, and the on -the -spot technical personnel is convenient to the maintenance and cleaning of transmission structure. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the schematic diagram of the utility model coating machine transmission shaft sealing structure.

[0013] In the drawing: 1, inflatable seal mounting block;2, bearing mounting seat;3, deep groove ball bearing;4, O ring;5, lip seal;6, screw;7, inflatable seal. SPECIFIC EMBODIMENTS

[0014] The technical scheme of the utility model will be described below in conjunction with the drawings. In the description of the utility model, it needs to be explained that the orientation or position relation of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0015] The utility model will be further described below in conjunction with the drawings.

[0016] As Figure 1 Shown, a kind of coating machine transmission shaft sealing structure, including inflatable seal mounting block 1, bearing mounting seat 2, deep groove ball bearing 3, O ring 4, lip seal 5 and inflatable seal 7;Bearing mounting seat 2 is installed on inflatable seal mounting block 1, and inflatable seal mounting block 1 and bearing mounting seat 2 are connected by screw 6.Inflatable seal mounting block 1 is connected on inner tank by welding.

[0017] Specifically, deep groove ball bearing 3 is installed between inflatable seal mounting block 1 and bearing mounting seat 2;O ring 4 is connected on the side wall of inflatable seal mounting block 1 and bearing mounting seat 2 connection;Sealing groove is provided between the cooperation surface of bearing mounting seat 2 and inflatable seal mounting block 1, for placing O ring 4.Bearing mounting seat 2 is provided with step groove on the side close to inflatable seal mounting block 1, and deep groove ball bearing 3 is located in step groove.

[0018] Specifically, the inner side of the bearing mounting seat 2 is provided with a lip-shaped shaft seal 5, and the inner side of the air charging sealing mounting block 1 is provided with an air charging seal 7; the transmission shaft penetrates the air charging sealing mounting block 1 and the bearing mounting seat 2, and the outer wall is in contact with the lip-shaped shaft seal 5 and the air charging seal 7.

[0019] Specifically, the air charging sealing mounting block 1 is welded on the inner box of the coating machine, and the remaining mounting surface of the bearing mounting seat 2 is designed with uniformly distributed threaded holes, so as to facilitate the installation and fixation of the bearing mounting seat 2.

[0020] Specifically, the bearing mounting seat 2 is fixed on the air charging sealing mounting block 1 through the screw 6. At the same time, the O-shaped ring 4 is placed in the sealing groove of the bearing mounting seat 2. The O-shaped ring 4 can provide the sealing property of the transmission assembly of the coating machine during use.

[0021] Specifically, the deep groove ball bearing 3 is loaded from the stepped end face of the bearing mounting seat 2, and is fixed by being pressed tightly between the bearing mounting seat 2 and the air charging sealing mounting block 1.

[0022] Specifically, the lip-shaped shaft seal 5 is loaded from the other side of the bearing mounting seat 2, so as to ensure the sealing between the bearing mounting seat 2 and the transmission shaft. At the same time, the air charging seal 7 is installed in the groove of the air charging sealing mounting block 1, and after being inflated, it is pressed against the transmission shaft, so as to realize the sealing between the air charging sealing mounting block 1 and the transmission shaft. The internal process area and the technical area are isolated, so as to ensure that the tablets can perform the coating process in a closed environment.

[0023] The transmission shaft sealing structure of the coating machine solves the problems that the transmission shaft of the closed coating machine is difficult to realize sealing, and is not conducive to the disassembly and maintenance of the transmission shaft. The mechanical structure is relatively simplified, and the difficulty of mechanical processing and the manufacturing cost are greatly reduced. At the same time, the use of the fixing structure is also conducive to the quick disassembly and assembly of the transmission shaft, and is convenient for the on-site technical personnel to maintain and clean the transmission structure.

[0024] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A coating pan drive shaft seal structure, characterized by, It comprises an air seal mounting block (1), a bearing mounting seat (2), a deep groove ball bearing (3), an O-ring (4), a lip seal (5) and an air seal (7). The bearing mounting seat (2) is mounted on the air seal mounting block (1), and the deep groove ball bearing (3) is mounted between the air seal mounting block (1) and the bearing mounting seat (2); the O-ring (4) is connected to the side wall of the air seal mounting block (1) and the bearing mounting seat (2); the inner side of the bearing mounting seat (2) is provided with the lip seal (5), and the inner side of the air seal mounting block (1) is provided with the air seal (7); the transmission shaft penetrates the air seal mounting block (1) and the bearing mounting seat (2), and the outer wall is in contact with the lip seal (5) and the air seal (7).

2. The coater drive shaft seal structure of claim 1, wherein, The air seal mounting block (1) and the bearing mounting seat (2) are connected by screws (6).

3. The coater drive shaft seal structure of claim 1, wherein, A sealing groove is arranged between the mating surfaces of the bearing mounting seat (2) and the air seal mounting block (1) for placing the O-ring (4).

4. The coater drive shaft seal structure of claim 1, wherein, The air seal mounting block (1) is connected to the inner box body by welding.

5. The coater drive shaft seal of claim 1, wherein, The bearing mounting seat (2) is provided with a stepped groove on the side close to the air seal mounting block (1), and the deep groove ball bearing (3) is located in the stepped groove.

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