Main transmission shaft sealing device of belt type sludge drying machine

Abstract

The utility model discloses a main transmission shaft sealing device of a belt type sludge drying machine, and belongs to the technical field of sealing devices, the main transmission shaft sealing device comprises a mounting seat and a framework oil seal, the mounting seat is annular, the inner ring of the mounting seat is in interference fit with the framework oil seal, a positioning hole is formed in the mounting seat, and the framework oil seal is arranged in the positioning hole. Rivets penetrate through the positioning holes to fix the installation base on the heat preservation plate, and the inner ring of the framework oil seal makes close contact with the main transmission shaft. The installation base and the framework oil seal are arranged at the contact position of the main transmission shaft and the heat preservation plate for sealing, the installation base and the framework oil seal are in interference fit, so that no gap exists between the two parts, the installation base is fixed to the heat preservation plate through the rivet, and the inner ring of the framework oil seal is in close contact with the main transmission shaft; local extrusion does not exist, leakage of heat and odor is prevented, the service life of the oil seal is prolonged, and the sealing effect is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of sealing devices, and in particular relates to a main drive shaft sealing device for a belt-type sludge dryer. Background Art

[0002] The belt type sludge dryer uses hot air to remove moisture from the sludge. The humid hot air is cooled and dehumidified by the surface cooler, and then heated by the heater to become dry hot air for recycling. There are positive pressure and negative pressure areas inside the belt type sludge dryer. In order to prevent the internal hot air from dissipating to the outside, the hot air positive pressure area needs to be sealed, and generally an insulation board is used for sealing.

[0003] When installing the main drive shaft, a hole needs to be opened at the insulation board of the equipment, and the shaft head part is extended out of the insulation board of the equipment to install the reduction motor. In this way, it is necessary to perform sealing treatment at the corresponding opening of the insulation board. The existing sealing treatment generally uses foam glue for bonding and sealing. Foam glue is applied to the contact position between the insulation board and the drive shaft for sealing. This foam glue sealing is OK for short-term use, but after a long time, the glue surface ages and easily causes leakage, which will cause heat loss, and the internal odor will also leak out, polluting the environment. Therefore, a device is needed to seal the contact between the main drive shaft and the insulation board. Utility Model Content

[0004] In order to solve the above problems, the present application proposes a main drive shaft sealing device of a belt-type sludge dryer.

[0005] The purpose of the present application is to provide a main drive shaft sealing device for a belt-type sludge dryer, which ensures the sealing between the main drive shaft and the insulation plate by adding a sealing device at the insulation plate to prevent leakage of odor.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] A main drive shaft sealing device for a belt-type sludge dryer comprises: a mounting seat and a skeleton oil seal, wherein the mounting seat is annular, an inner ring of the mounting seat and the skeleton oil seal are interference fit, a positioning hole is provided on the mounting seat, a rivet passes through the positioning hole to fix the mounting seat on an insulation plate, and the inner ring of the skeleton oil seal is in close contact with the main drive shaft.

[0008] Furthermore, the outer diameter of the skeleton oil seal is smaller than the diameter of the fixed bearing seat, and the inner diameter of the skeleton oil seal is larger than the diameter of the main transmission shaft.

[0009] Furthermore, the thickness of the skeleton oil seal is greater than the thickness of the mounting seat.

[0010] Furthermore, the skeleton oil seal and the mounting seat are in close contact with the insulation board on one side thereof.

[0011] Compared with the prior art, the beneficial effects of this application are:

[0012] The present application performs sealing by arranging a mounting seat and a skeleton oil seal at the position where the main drive shaft contacts the insulation plate. The mounting seat and the skeleton oil seal have an interference fit so that there is no gap between the two components and the connection is tight. The mounting seat is fixed to the insulation plate by rivets, and the inner ring of the skeleton oil seal is in close contact with the main drive shaft without local extrusion, thereby preventing leakage of heat and odor and improving the service life and sealing effect of the oil seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the installation diagram for this application;

[0014] Figure 2 for Figure 1 A partial enlarged view of part A;

[0015] Figure 3 A three-dimensional schematic diagram without installing insulation panels for this application;

[0016] Figure 4 for Figure 3 A partial enlarged view of part B in FIG.

[0017] Among them: 1. Insulation board, 2. Main transmission shaft, 3. Skeleton oil seal, 4. Mounting seat, 5. Sludge dryer frame, 6. Metal mesh belt, 7. Sprocket, 8. Fixed bearing seat, 9. Reducer motor, 10. Adjustable bearing seat, 11. Driven shaft, 12. Chain. DETAILED DESCRIPTION

[0018] The present application is further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0019] A main drive shaft sealing device for a belt type sludge drying machine, such as Figure 1-4 As shown, it includes: a mounting seat 4 and a skeleton oil seal 3, the mounting seat 4 is annular, and the inner ring of the mounting seat 4 and the skeleton oil seal 3 have an interference fit, so that the skeleton oil seal 3 can be fixed on the mounting seat 4 to prevent the skeleton oil seal 3 and the mounting seat 4 from being loosely connected, and the mounting seat 4 is provided with a positioning hole, and the rivet passes through the positioning hole to fix the mounting seat 4 on the insulation board 1, and the inner ring of the skeleton oil seal 3 is in close contact with the main transmission shaft 2 to ensure that there is enough pressure between the oil seal and the shaft to prevent the leakage of lubricating oil and ensure the sealing effect of the skeleton oil seal 3. The material of the skeleton oil seal 3 has a certain elasticity, so in the case of close contact, the oil seal will not loosen due to temperature changes.

[0020] like Figure 2As shown, the outer diameter of the skeleton oil seal 3 is smaller than the diameter of the fixed bearing seat 2 , and the inner diameter of the skeleton oil seal 3 is larger than the diameter of the main transmission shaft 2 , which facilitates the installation of the skeleton oil seal 3 .

[0021] like Figure 2 As shown, the thickness of the skeleton oil seal 3 is greater than the thickness of the mounting seat 4 , which facilitates the installation of the skeleton oil seal 3 .

[0022] like Figure 2 As shown, the skeleton oil seal 3 and the mounting seat 4 are in close contact with the insulation board 1 on one side thereof, so as to prevent leakage of odor.

[0023] In the technical solution of this application, if Figure 3 As shown, the belt type sludge dryer also includes a sludge dryer frame 5, a metal mesh belt 6, a sprocket 7, a main transmission shaft 2, a driven shaft 11, a fixed bearing seat 8, an adjustable bearing seat 10, and a reduction motor 9. The fixed bearing seat 8 and the adjustable bearing seat 10 are respectively mounted on both ends of the sludge dryer frame 5, the main transmission shaft 2 and the driven shaft 11 are respectively mounted on the fixed bearing seat 8 and the adjustable bearing seat 10, the sprocket 7 is located on both sides of the main transmission shaft 2 and the driven shaft 11, and the sprocket 7 is respectively connected to the main transmission shaft 2 and the driven shaft 11 through a pin shaft, as shown in FIG. Figure 4 As shown, chains 12 are provided on both sides of the metal mesh belt 6. The chains 12 drive the metal mesh belt 6 to move under the rotation of the sprocket 7. The insulation plate 1 seals the sludge dryer frame 5. One side of the main transmission shaft 2 passes through the insulation plate 1 and is detachably connected to the reduction motor 9. The reduction motor 9 is located on the outside of the insulation plate 1.

[0024] When the sludge enters the metal mesh belt 6, the reduction motor 9 drives the main transmission shaft 2 to rotate, and the metal mesh belt 6 drives the sludge to be transported inside the equipment. At this time, the contact position between the main transmission shaft 2 and the insulation plate 1 is sealed through the oil seal mounting seat 4 and the skeleton oil seal 3. The inner hole of the skeleton oil seal 3 fits with the main transmission shaft 2. When the main transmission shaft 2 rotates, the internal hot air will not overflow from here, thereby reducing heat loss, reducing internal odor overflow, and reducing environmental pollution.

[0025] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. A main drive shaft sealing device for a belt-type sludge dryer, characterized in that: include: The mounting seat and the skeleton oil seal, the mounting seat is annular, the inner ring of the mounting seat and the skeleton oil seal are interference fit, the mounting seat is provided with a positioning hole, the rivet passes through the positioning hole to fix the mounting seat on the insulation board, and the inner ring of the skeleton oil seal is in close contact with the main transmission shaft.

2. A main transmission shaft sealing device for a belt-type sludge drying machine as claimed in claim 1, characterized in that: The outer diameter of the skeleton oil seal is smaller than the diameter of the fixed bearing seat, and the inner diameter of the skeleton oil seal is larger than the diameter of the main transmission shaft.

3. The main transmission shaft sealing device of a belt-type sludge drying machine as claimed in claim 1, characterized in that: The thickness of the skeleton oil seal is greater than the thickness of the mounting seat.

4. The main transmission shaft sealing device of a belt-type sludge drying machine as claimed in claim 1, characterized in that: The skeleton oil seal and the mounting seat are in close contact with the insulation board at one side thereof.

Images