Shaft sealing assembly of spiral conveyor

Abstract

The utility model relates to the technical field of shaft sealing devices of spiral conveyors, in particular to a shaft sealing assembly of a spiral conveyor, which comprises a spiral outer pipe layer and a sealing bottom plate, a layer of isolation pipe is arranged in the spiral outer pipe layer, the sealing bottom plate is arranged at the bottoms of the isolation pipe and the spiral outer pipe layer, and a rotating shaft is arranged in the isolation pipe. A spiral blade arrangement outline is drawn on the spiral outer pipe layer, an error combination block is arranged between the isolation pipe and the spiral outer pipe layer, an end sealing device is arranged on the right side of the rotating shaft, and a meshing end is arranged on the right side of the end sealing device. The device has the advantages that the shaft sealing device adopted by the device not only enables the spiral blade to work normally, but also prevents conveyed materials from being in contact with the rotating shaft, the transmission shaft is well protected on the basis, the device is special in design but simple to use, a user can master the device quickly, and the device is convenient to use. And the use is quicker and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyor shaft sealing devices, in particular to a screw conveyor shaft sealing component. Background Art

[0002] A screw conveyor is a machine that uses a motor to drive the screw to rotate and push materials to achieve the purpose of conveying. The screw conveyor can convey horizontally, inclined or vertically, and has the advantages of simple structure, small cross-sectional area, good sealing, easy operation, easy maintenance, and convenient closed transportation. A mechanical seal refers to a device that prevents fluid leakage by maintaining contact and relative sliding of at least one pair of end faces perpendicular to the axis of rotation under the action of fluid pressure and the elastic force or magnetic force of the compensation mechanism and the cooperation of auxiliary seals. The mechanical seal of the elastic loading mechanism and the auxiliary seal is a metallic bellows, which is called a metal bellows seal. Screw conveyors are suitable for light industry, chemical industry, environmental protection, food and other industries.

[0003] For example, a sealing assembly for a rotating shaft disclosed in publication number CN108612847B includes a water pump shaft, an anti-fouling sheet, a dustproof lip, an integral sealing device, a frame, a spring ring, a sealing adhesive layer, a spring groove, a grease layer, a bearing static ring, a bearing dynamic ring, a connecting lip piece 1, a connecting lip piece 2, a connecting hole and a fixing plug. By arranging a connecting lip piece 1 and a connecting lip piece 2 at the connecting end of the sealing assembly, and connecting the two ends of the sealing assembly through the connecting hole and the fixing plug between the connecting lip piece 1 and the connecting lip piece 2, it is ensured that during the bonding process during the installation process of the sealing assembly, it is prevented that the two ends of the sealing assembly are fitted by the hands of dry personnel, and it is ensured that during use, the connection between the two ends of the sealing assembly is more firmly connected to prevent long-term vibration and rotation from causing the sealing assembly connection to become debonded.

[0004] The shaft seal assembly of the above-mentioned device makes the connection between the two ends of the seal assembly more stable, but the shaft seal assembly is an integrally formed structure and needs to be replaced as a whole after damage, which increases the maintenance cost. In addition, the installation process is relatively cumbersome, and there are many operating steps in the installation process of the shaft, which not only wastes the required materials in the structure, but also appears redundant in the installation operation. Utility Model Content

[0005] The utility model aims to provide a shaft sealing assembly for a screw conveyor to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shaft sealing assembly of a screw conveyor, comprising a spiral outer tube layer and a sealing bottom plate, an isolation tube is arranged inside the spiral outer tube layer, and the sealing bottom plate is arranged at the bottom of the isolation tube and the spiral outer tube layer, and a rotating shaft is arranged inside the isolation tube, a spiral blade placement contour is outlined on the spiral outer tube layer, and an error connection block is arranged between the isolation tube and the spiral outer tube, an end sealing device is arranged on the right side of the rotating shaft, and an engaging end is arranged on the right side of the end sealing device.

[0007] Preferably, a raised end surface is arranged at the front end of the rotating shaft, and a recessed opening is arranged on the outer surface of the raised end surface, and a circumscribed shaft is arranged on the outer layer of the raised end surface.

[0008] Preferably, a recessed opening is also provided on the external shaft, and a fixing column is provided in the recessed opening, and a pressing end is arranged on the outer end surface of the fixing column, and a rebound buckle is arranged at the bottom of the pressing end.

[0009] Preferably, a roller indentation is arranged on the surface of the circumscribed shaft, and a plurality of rolling bodies are arranged in a sealing device at the end corresponding to the roller indentation, and a retaining frame is arranged outside the rolling body.

[0010] Preferably, a built-in space is provided in the central part of the end sealing device, and the built-in space runs through various parts of the end sealing device, and an oil inlet is provided at the upper end of the built-in space.

[0011] Preferably, a meshing end is provided at the end of the external shaft, and an insertion opening is provided at the central portion, and a sealing profile is provided at the junction of the end sealing device and the outer layer.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Compared with the shaft sealing components of other screw conveyors, the spiral outer tube and internal isolation tube used in this device can prevent the spiral blades from causing unnecessary burden on the rotating shaft during installation and use. The setting of the isolation tube also prevents the spiral blades from bringing the transported materials into the rotating shaft to cause jamming or other impacts during use.

[0014] 2. This device installs an end sealing device at the end of the rotating shaft to facilitate the continuous rotation of the rotating shaft. The installation of this device allows a more convenient access to the front end of the rotating shaft, and when the rotating shaft rotates, the bearing arranged inside it will continue to rotate. When the rotating shaft does not have enough rotation force at a certain moment, it can be supplemented when needed. This design also isolates the rotating shaft from the outside world, acting as a protective measure. When the rotating shaft needs to stop, the internal rotating shaft will also bear the excess force.

[0015] 3. The device is relatively simple and quick in design and ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front overview of the utility model;

[0017] Figure 2 This is an exploded view of the internal tube of the utility model;

[0018] Figure 3 It is a cross-sectional view of the end sealing device of the utility model;

[0019] Figure 4 It is a side sectional view of the utility model.

[0020] In the figure: spiral outer tube 1, mounting profile 2, sealing base plate 3, rotating shaft 4, raised end face 5, recessed opening 6, end sealing device 7, error combining block 8, isolation tube 9, mounting opening 10, meshing end 11, roller indentation 12, sealing profile 13, oil inlet 14, retaining frame 15, rolling element 16, built-in space 17, convex profile 18, pressing end 19, fixing column 20, rebound buckle 21. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4 The utility model provides a technical solution: a shaft sealing component of a screw conveyor, including a spiral outer tube layer and a sealing bottom plate 3, a spacer tube 9 is arranged inside the spiral outer tube layer, the spacer tube 9 and the spiral outer tube 1 are at the same length, and the sealing bottom plate 3 is arranged at the bottom of the spacer tube 9 and the spiral outer tube layer, the sealing bottom plate 3 connects the pores between the spacer tube 9 and the spiral outer tube 1, and at the same time, a rotating shaft 4 is arranged inside the spacer tube 9, a spiral blade placement profile 2 is outlined on the spiral outer tube layer for inserting the spiral blade, and an error combination block 8 is arranged between the spacer tube 9 and the spiral outer tube 1, the error combination block 8 is arranged between the spacer tube 9 and the spiral outer tube 1, and is the same as the placement profile 2 of the spiral blade but is staggered from each other, mainly connecting the two inner tubes to each other, and an end sealing device 7 is arranged on the right side of the rotating shaft 4;

[0023] A raised end face 5 is provided at the front end of the rotating shaft 4. The setting of the raised end face 5 gives the rotating shaft 4 more operating space, and a recessed opening 6 is provided on the outer surface of the raised end face 5. At the same time, an external shaft is provided on the outer layer of the raised end face 5. The recessed opening 6 is also provided on the external shaft, and a fixing column 20 is provided in the recessed opening 6. The fixing column 20 is inserted from the external shaft to the raised end face 5, so that the external shaft and the rotating shaft are subjected to the same force while the rotating shaft 4 is placed inside to achieve the protection effect as much as possible. At the same time, a pressing end 19 is arranged on the outer end face of the fixing column 20 to facilitate the user to press down the fixing column 20 to ensure stable fixation. A rebound buckle 21 is arranged at the bottom of the pressing end 19, mainly for the convenience of disassembly;

[0024] Roller indentations 12 are arranged on the surface of the circumscribed shaft, and a number of rolling bodies 16 are placed in the end sealing device 7 corresponding to the roller indentations 12, and a retaining frame 15 is arranged on the outside of the rolling body 16. The connection between the retaining frame 15 and the rolling body 16 allows the rotation of the rotating shaft 4 to drive it to rotate along the indentation, which can provide different functions during operation or when stopped. A built-in space 17 is arranged in the central part of the end sealing device 7, and the built-in space 17 shuttles through various places of the end sealing device 7. At the same time, an oil inlet 14 is arranged at the upper end of the built-in space 17, which mainly receives lubricating oil and transmits it to various places to ensure the operation of the device. A meshing end 11 is arranged at the end of the circumscribed shaft, and an insertion port 10 is arranged in the central part. At the same time, a sealing profile 13 is arranged at the junction of the end sealing device 7 and the outer layer. The setting of the sealing profile 13 forms a sealed space to isolate the inside.

[0025] In actual use, first place the rotating shaft 4 along the inside of the isolation barrel until it reaches the end and stops, press the pressing end 19, insert the fixing column 20 into the recessed opening 6 of the raised end face 5 until it is stably fixed, then insert the meshing end 11 of the external shaft into the corresponding position, place the spiral blade on the corresponding placement contour 2, pour a small amount of lubricating oil into the oil inlet 14, start the drive motor to drive the rotating shaft 4, and at this time the rotating shaft 4 is in a sealed state.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft seal assembly for a screw conveyor, comprising a spiral outer tube layer and a sealing bottom plate (3), wherein a layer of an isolation tube (9) is arranged inside the spiral outer tube layer, and the isolation tube (9) and the bottom of the spiral outer tube layer are provided with the sealing bottom plate (3), and a rotating shaft (4) is arranged inside the isolation tube (9), characterized in that: The spiral outer tube layer is outlined with a spiral blade placement profile (2), and an offset joint block (8) is arranged between the isolation tube (9) and the spiral outer tube (1). An end sealing device (7) is arranged on the right side of the rotating shaft (4), and a meshing end (11) is arranged on the right side of the end sealing device (7).

2. The shaft seal assembly of a screw conveyor according to claim 1, characterized in that: A convex end surface (5) is arranged at the front end of the rotating shaft (4), a concave opening (6) is arranged on the outer surface of the convex end surface (5), and a circumscribed shaft is arranged on the outer layer of the convex end surface (5).

3. The shaft seal assembly of a screw conveyor according to claim 2, characterized in that: The circumscribed shaft is also provided with a recessed opening (6), and a fixing column (20) is provided in the recessed opening (6). A pressing end (19) is arranged on the outer end surface of the fixing column (20), and a rebound buckle (21) is arranged at the bottom of the pressing end (19).

4. The shaft seal assembly of a screw conveyor according to claim 3, characterized in that: The surface of the circumscribed shaft is provided with a roller indentation (12), and a plurality of rolling bodies (16) are arranged in a sealing device (7) at the end corresponding to the roller indentation (12), and a retaining frame (15) is arranged outside the rolling body (16).

5. The shaft seal assembly of a screw conveyor according to claim 4, characterized in that: A built-in space (17) is arranged in the central part of the end sealing device (7), and the built-in space (17) runs through various parts of the end sealing device (7). An oil inlet (14) is arranged at the upper end of the built-in space (17).

6. The shaft seal assembly of a screw conveyor according to claim 5, characterized in that: An engaging end (11) is arranged at the end of the external shaft, and an insertion opening (10) is arranged at the central part, and a sealing profile (13) is arranged at the junction of the end sealing device (7) and the outer layer.

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