A rotary shaft sleeve fixing device on a steam tube rotary dryer

Abstract

The application provides a rotating shaft sleeve fixing device of a steam tube rotary dryer, which is installed in a steam box body, a rotating steam shaft is matched in the steam box body, a steam inlet, a condensate outlet, a residual gas outlet and a residual liquid outlet are arranged on the steam box body, and the device is characterized in that: a fixed shaft sleeve is fixedly arranged in the steam box body, a rotating shaft sleeve that rotates synchronously with the rotating steam shaft is sleeved on the rotating steam shaft, the fixed shaft sleeve, the rotating shaft sleeve and the rotating steam shaft are all provided with openings corresponding to the steam inlet, the condensate outlet, the residual gas outlet and the residual liquid outlet respectively, and pressing plates for sealing the gap between the rotating shaft sleeve and the rotating steam shaft are respectively arranged on the two end faces of the rotating shaft sleeve. Compared with the prior art, the rotating shaft sleeve fixing device of the steam tube rotary dryer has the following advantages: 1) the fixing of the rotating shaft sleeve and the rotating steam shaft is ensured, so that the relative rotation between the two does not occur; 2) the sealing between the rotating shaft sleeve and the rotating steam shaft is realized, so that steam leakage is avoided; and 3) the device is easy to operate and has low cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of chemical equipment, in particular to a rotating shaft sleeve fixing device of a steam pipe rotary dryer. BACKGROUND

[0002] The steam pipe rotary dryer is widely used in the field of petrochemical industry. For similar rotary equipment, the shaft sleeve needs to be fixed to the rotating shaft and rotate with the rotating shaft, and also needs to be able to seal steam. The previous fixing method is prone to steam leakage and the shaft sleeve is separated from the fixing and relative sliding with the rotating shaft, which causes the steam inlet position to be misaligned, resulting in steam not being able to enter the cavity smoothly, heat transfer failure, and a significant reduction in production capacity. SUMMARY

[0003] In view of the above problems, the present application provides a rotating shaft sleeve fixing device of a steam pipe rotary dryer, which can effectively ensure the connection and fixation of the shaft sleeve and the rotating shaft, and also ensure the sealing reliability of the shaft sleeve and the non-leakage of steam.

[0004] The technical scheme adopted by the present application is as follows:

[0005] A rotating shaft sleeve fixing device of a steam pipe rotary dryer is installed in a steam box, and a rotating steam shaft is matched in the steam box. The steam box is provided with a steam inlet, a condensate outlet, a residual gas outlet, and a residual liquid outlet. The steam box is fixedly provided with a fixed shaft sleeve, and the rotating steam shaft is provided with a rotating shaft sleeve that rotates synchronously with the rotating steam shaft. The fixed shaft sleeve, the rotating shaft sleeve, and the rotating steam shaft are all provided with openings corresponding to the steam inlet, the condensate outlet, the residual gas outlet, and the residual liquid outlet. The two end faces of the rotating shaft sleeve are also respectively provided with a pressing plate for sealing the gap between the rotating shaft sleeve and the rotating steam shaft.

[0006] Preferably, the pressing plate is installed on the end face of the rotating shaft sleeve through a plurality of connecting screws.

[0007] Preferably, a sealing gasket is further arranged between the pressing plate and the end face of the rotating shaft sleeve.

[0008] More preferably, the pressing plate is of a half-split structure.

[0009] Preferably, the rotating steam shaft is further provided with a gland for positioning the pressing plate, and the gland is located at one end of the rotating shaft sleeve. The gland is provided with a plurality of through holes for the screws to pass through.

[0010] More preferably, the gland is welded to the rotating steam shaft.

[0011] Preferably, the rotating shaft sleeve is installed on the rotating steam shaft through a plurality of positioning members, each positioning member comprising a blanking plate and a positioning bolt, the rotating shaft sleeve is provided with a plurality of first positioning holes, the rotating steam shaft is provided with a plurality of second positioning holes, and the positioning bolt is positioned through the blanking plate, the second positioning hole and the first positioning hole.

[0012] Preferably, the fixed shaft sleeve is fixedly installed in the steam box body through a screw.

[0013] Compared with the prior art, the rotating shaft sleeve fixing device of the steam tube rotary dryer has the following advantages: 1) the rotating shaft sleeve and the rotating steam shaft are fixed, so that relative rotation between the two does not occur; 2) the rotating shaft sleeve and the rotating steam shaft are sealed, so that steam leakage is prevented; and 3) the device is easy to operate and has low cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a structural schematic view of the rotating shaft sleeve fixing device of the steam tube rotary dryer according to the present application;

[0015] Figure 2 FIG. 2 is an A-A and B-B sectional view of the rotating shaft sleeve fixing device of the steam tube rotary dryer according to the present application;

[0016] Figure 3 FIG. 3 is an enlarged view C-C of the rotating shaft sleeve fixing device of the steam tube rotary dryer according to the present application;

[0017] Figure 4 FIG. 4 is an enlarged view D-D of the rotating shaft sleeve fixing device of the steam tube rotary dryer according to the present application;

[0018] Figure 5 FIG. 5 is a schematic view of the pressing plate in the rotating shaft sleeve fixing device of the steam tube rotary dryer according to the present application;

[0019] Figure 6 FIG. 6 is a schematic view of the gland in the rotating shaft sleeve fixing device of the steam tube rotary dryer according to the present application. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present application are described in detail with reference to the accompanying drawings.

[0021] Figures 1 to 6 FIG. 7 is a preferred embodiment of the rotating shaft sleeve fixing device of the steam tube rotary dryer according to the present application. Figures 1 to 6As shown, the rotating shaft sleeve fixing device on the steam tube rotary dryer is installed in the steam box 1, the rotating steam shaft 2 is matched in the steam box, the steam box 1 is provided with a steam inlet N1, a condensate outlet N2, a residual gas outlet N3 and a residual liquid outlet N4, the fixed shaft sleeve 3 is fixedly arranged in the steam box 1, the rotating steam shaft 2 is sleeved with the rotating shaft sleeve 4 which rotates synchronously with the rotating steam shaft, the fixed shaft sleeve 3, the rotating shaft sleeve 4 and the rotating steam shaft 2 are all provided with openings corresponding to the steam inlet, the condensate outlet, the residual gas outlet and the residual liquid outlet respectively; the two end faces of the rotating shaft sleeve 4 are further respectively provided with the pressing plates 6 for sealing the gap between the rotating shaft sleeve and the rotating steam shaft, so that the sealing between the rotating shaft sleeve and the rotating steam shaft is realized, and it is ensured that the steam does not leak.

[0022] The pressing plate 6 is a half structure, and a separation line is arranged in the middle of the pressing plate 6. The pressing plate 6 is installed on the end face of the rotating shaft sleeve 4 through a plurality of connecting screws 601, and can be conveniently disassembled; the pressing plate 6 and the end face of the rotating shaft sleeve 4 are further provided with the sealing gasket 5, so as to maintain the sealing property; the rotating shaft sleeve 4 on the rotating steam shaft is fixed and sealed through the pressing plate, the sealing gasket 5 and the screw structure.

[0023] The rotating steam shaft 2 is further provided with the gland 7 for positioning the pressing plate, the gland 7 is located at one end of the rotating shaft sleeve 4, and a plurality of through holes 71 for the screws to pass through are arranged on the gland, so that when one pressing plate 6 is installed at one end of the rotating shaft sleeve 4, the screws pass through the through holes 71 on the gland 7 and are installed on the end face of one end of the rotating shaft sleeve 4. The gland 7 is welded on the rotating steam shaft 2, the sealing gasket 5, the pressing plate 6 and the rotating shaft sleeve 4 are fixed together through the connecting screws, and the sealing gasket 5 is pressed to realize sealing and does not leak steam.

[0024] A circle of openings Φ12 (for example, M10 is used as the connecting screw) and a circle of through holes 71 are arranged on the same diameter center circle of the gland 7, the space for the tightening tool of the M10 screw is used as the reference, and the screws are conveniently fastened. A circle of round holes is arranged on the pressing plate 6, the screws for pressing the sealing gasket 5 are arranged at the positions of the through holes 71 of the gland 7, the pressing plate 6 and the rotating shaft sleeve 4 are directly connected, and the sealing of one end of the rotating shaft sleeve 4 and the rotating steam shaft 2 is realized. At the same time, the screws realize the fixing of one end of the rotating shaft sleeve 4 and the rotating steam shaft 2 through the connection of the gland 7, the pressing plate 6 and the rotating shaft sleeve 4.

[0025] At the other end of the rotating shaft sleeve 4, the sealing gasket 5 is arranged between the pressing plate 6 and the end face of the other end of the rotating shaft sleeve 4, and the pressing plate 6 is live and is not welded.

[0026] The rotating shaft sleeve 4 is installed on the rotating shaft 2 through a plurality of positioning members 8, each of which comprises a blocking plate 81 and a positioning bolt 82, the rotating shaft sleeve 4 is provided with a plurality of first positioning holes, the rotating shaft 2 is provided with a plurality of second positioning holes, and the positioning bolt 82 positions the rotating shaft sleeve 4 by penetrating the blocking plate 81, the second positioning hole and the first positioning hole; the rotating shaft sleeve 4 and the rotating shaft 2 are further fixed through the positioning bolt 82. The blocking plate 81 is used to prevent the positioning bolt 82 from falling into the rotating shaft 2, and the structure ensures the reliable and safe fixation of the rotating shaft sleeve 4 and the rotating shaft 2; in this way, the design of the circumferential positioning bolt and the blocking plate is increased, the fixation of the rotating shaft sleeve 4 and the rotating shaft 2 is further ensured, the relative sliding between the two is prevented, the steam passage and the condensate passage are smooth, the production standard is ensured, and thus the long-term stable operation of the equipment is realized.

[0027] Process engineering: steam enters from the steam inlet 101, passes through the fixed shaft sleeve 3, the rotating shaft sleeve 4 and the rotating shaft 2 corresponding to the steam inlet, enters the rotating shaft 2, and then passes through subsequent heat exchange, the condensate passes through the fixed shaft sleeve 3, the rotating shaft sleeve 4 and the rotating shaft 2 corresponding to the condensate outlet 102, and is discharged from the condensate outlet 102, the residual gas outlet is used for discharging residual gas, and the residual liquid outlet is used for discharging residual liquid. The four openings on the fixed shaft sleeve 3, the rotating shaft sleeve 4 and the rotating shaft 2 correspond to the steam inlet 101, the condensate outlet 102, the residual gas outlet 103 and the residual liquid outlet 104 on the steam tank 1 one by one, and once there is a misalignment, the steam will not enter smoothly, the condensate will not be discharged smoothly, the heat exchange will not be sufficient, the process production parameters will not be reached, and the equipment function will fail.

[0028] In summary, the technical scheme of the present application can effectively achieve the above-mentioned purposes, and the structure and function principle of the present application have been fully verified in the embodiments, and the expected effect and purpose can be achieved. Without departing from the principles and essence of the present application, various changes or modifications can be made to the embodiments of the present application. Therefore, the present application includes all alternatives within the scope of the patent application, any equivalent changes made within the scope of the present application are within the scope of the present application.

Claims

1. A rotating shaft sleeve fixing device for a steam tube rotary dryer, installed inside a steam chamber, wherein a rotating steam shaft is fitted inside the steam chamber, and the steam chamber is provided with a steam inlet, a condensate outlet, a residual gas outlet, and a residual liquid outlet, characterized in that: A fixed bushing is fixedly installed inside the steam box, and a rotating bushing that rotates synchronously with the rotating steam shaft is fitted on the rotating steam shaft. The fixed bushing, the rotating bushing, and the rotating steam shaft are all provided with openings corresponding to the steam inlet, condensate outlet, residual gas outlet, and residual liquid outlet, respectively. Pressure plates for sealing the gap between the rotating bushing and the rotating steam shaft are also installed on both ends of the rotating bushing. The pressure plate is mounted on the end face of the rotating shaft sleeve by multiple connecting screws; a sealing gasket is also provided between the pressure plate and the end face of the rotating shaft sleeve; a pressure cover for positioning the pressure plate is also provided on the rotating shaft sleeve, the pressure cover is located at one end of the rotating shaft sleeve, and the pressure cover has multiple through holes for screws to pass through; the pressure cover is welded to the rotating shaft sleeve; the rotating shaft sleeve is mounted on the rotating shaft sleeve by multiple positioning components, each positioning component including a blocking plate and a positioning bolt, the rotating shaft sleeve has multiple first positioning holes, the rotating shaft sleeve has multiple second positioning holes, and the positioning bolt passes through the blocking plate, the second positioning holes and the first positioning holes to position the rotating shaft sleeve.

2. The rotating shaft sleeve fixing device on the steam pipe rotary dryer according to claim 1, characterized in that: The pressure plate has a split structure.

3. The rotating shaft sleeve fixing device on the steam pipe rotary dryer according to claim 1, characterized in that: The fixed bushing is fixedly installed inside the steam box by screws.

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