A kind of waste heat boiler scraper machine shaft end sealing device

Abstract

The utility model discloses a kind of waste heat boiler scraper machine shaft end sealing devices, applied to the sealing of rotating shaft end and box insertion, including end cap half shell, fixed assembly and sealing assembly;Multiple end cap half shell is symmetrically arranged on the outside of rotating shaft and located the outside of box;Fixed assembly is arranged at the connecting place of end cap half shell and box, and fixed assembly includes insertion connecting part, and insertion connecting part end is connected to the side of end cap half shell and box;Sealing assembly includes axial sealing part and lateral sealing part, axial sealing part is arranged in the inner wall of end cap half shell, and lateral sealing part is arranged in the side of end cap half shell close to box;The utility model is by setting spliced end cap half shell on the outside of rotating shaft, and the end cap half shell is fixed by insertion connecting part and box, and end cap half shell is sealed by axial sealing part and lateral sealing part, compared with the design of integral end cap, the design can directly remove end cap without disassembling rotating shaft end bearing, and the maintenance replacement of end cap half shell is carried out.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary components for waste heat boilers, and in particular to a shaft end sealing device for a scraper conveyor of a waste heat boiler. Background Technology

[0002] The waste heat boiler scraper conveyor is mainly composed of a closed-section shell (machine trough), scraper chain, drive device, tensioning device and safety protection device. During the use of the waste heat boiler scraper conveyor, the shaft end caps at the head and tail of the machine often fail, mainly manifested as end cap breakage and end cap jamming. At this time, it is necessary to replace the damaged end cap.

[0003] However, since the end cap is made of cast iron and is fitted onto the outside of the shaft, the bearing at the outer end of the shaft must be completely disassembled before the end cap can be moved and separated from the shaft during the replacement process. This operation prolongs the maintenance and replacement time of the end cap.

[0004] Therefore, in order to solve the above-mentioned end cover replacement problem, a shaft end sealing device for a waste heat boiler scraper conveyor is proposed. Summary of the Invention

[0005] The purpose of this utility model is to provide a shaft end sealing device for a waste heat boiler scraper conveyor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shaft end sealing device for a waste heat boiler scraper conveyor, used for sealing the intersection of the shaft end and the housing, comprising:

[0007] End cap half shells, a plurality of said end cap half shells are symmetrically arranged on the outside of the rotating shaft and located on the outside of the housing;

[0008] A fixing component, wherein multiple fixing components are used to fix the end cover half shell and the box body, the fixing component is disposed at the connection between the end cover half shell and the box body, the fixing component includes a plug-in part, the end of the plug-in part is inserted and connected to the side of the end cover half shell and the box body, and an anti-loosening part is provided on the outer side of the plug-in part;

[0009] A sealing assembly is used to seal the connection between the rotating shaft, the housing and the end cover half shell. The sealing assembly includes an axial sealing part and a lateral sealing part. The axial sealing part is disposed on the inner wall of the end cover half shell, and the lateral sealing part is disposed on the side of the end cover half shell near the housing.

[0010] Preferably, the lateral sealing portion includes:

[0011] A sealing half-groove is formed on the side of the end cap half-shell;

[0012] The second packing is disposed in the inner cavity of the sealing half-groove and is used to seal the connection between the end cover half-shell and the housing.

[0013] An isolation layer is disposed on opposite sides of multiple end cap halves, and the isolation layer is used to seal the joints of the multiple end cap halves.

[0014] Preferably, the axial sealing portion includes:

[0015] Sealing ring grooves, and multiple sealing ring grooves are formed on the inner wall of the end cap half shell;

[0016] The first packing, and a plurality of the first packings are disposed in the inner cavity of the sealing ring groove, the first packings being used to seal the connection between the end cap half-shell and the rotating shaft.

[0017] Preferably, the insertion part includes fixing bolts, and the ends of a plurality of fixing bolts are sequentially inserted and connected to the side of the end cover half shell and the side of the box body.

[0018] Preferably, a fixing hole is provided on the side of the end cap half shell, and the fixing hole is used for the insertion of fixing bolts.

[0019] Preferably, the anti-loosening part includes a compression spring, which is disposed in the inner cavity of the fixing hole and sleeved on the outside of the fixing bolt.

[0020] Preferably, the inner wall of the fixing hole is provided with an enlarged groove, which is used to compress the deformation of the spring.

[0021] The technical effects and advantages of this utility model are as follows:

[0022] This utility model features a spliced ​​end cap half-shell on the outer side of the rotating shaft. The spliced ​​end cap half-shell is fixed to the housing by the insertion part in the fixing assembly. The inner wall and side of the end cap half-shell are provided with axial sealing parts and lateral sealing parts for sealing treatment. Compared with the integral end cap design, the split end cap half-shell structure of this design allows the end cap to be removed directly without disassembling the bearing at the end of the rotating shaft for maintenance and replacement of the end cap half-shell. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the connection between the overall structure and the housing of this utility model.

[0024] Figure 2 This is a front view of the entire utility model.

[0025] Figure 3 This is a cross-sectional view of the end cap half-shell of this utility model.

[0026] Figure 4 This is a schematic diagram of the end cap half-shell structure of this utility model.

[0027] In the diagram: 1. Housing; 2. End cover half-shell; 201. Sealing half-groove; 202. Sealing ring groove; 203. Fixing hole; 2031. Compression spring; 3. Rotating shaft; 4. Fixing bolt; 5. First packing; 6. Second packing; 7. Isolation layer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides, for example Figure 1-4 As shown: Example 1

[0030] A waste heat boiler scraper conveyor shaft end sealing device is used for sealing the end of the rotating shaft 3 where it intersects with the housing 1, and includes an end cover half shell 2, a sealing component and a fixing component;

[0031] Specifically, multiple end cap half shells 2 are symmetrically arranged on the outside of the rotating shaft 3 and on the outside of the housing 1. Multiple fixing components are used to fix the end cap half shells 2 and the housing 1. The fixing components are set at the connection between the end cap half shells 2 and the housing 1. The sealing components are used to seal the connection between the rotating shaft 3, the housing 1 and the end cap half shells 2.

[0032] It should be noted that the end cap half shell 2 is made of cast iron, the end of the shaft 3 away from the end cap half shell 2 is a bearing, the fixing component includes a plug-in part, the end of the plug-in part is inserted and connected to the side of the end cap half shell 2 and the box 1, the outside of the plug-in part is provided with an anti-loosening part, the sealing component includes an axial sealing part and a lateral sealing part, the axial sealing part is provided on the inner wall of the end cap half shell 2, and the lateral sealing part is provided on the side of the end cap half shell 2 close to the box 1.

[0033] Specifically, the lateral sealing part includes a sealing half-groove 201, a second packing 6, and an isolation layer 7;

[0034] It should be noted that the sealing half groove 201 is opened on the side of the end cap half shell 2, the second packing 6 is set in the inner cavity of the sealing half groove 201, and the isolation layer 7 is set on the opposite sides of the multiple end cap half shells 2.

[0035] Specifically, the second packing 6 is used to seal the connection between the end cap half shell 2 and the box body 1, and the isolation layer 7 is used to seal the splicing of multiple end cap half shells 2. The material of the second packing 6 is high-temperature resistant asbestos packing, and the material of the isolation layer 7 is asbestos cloth.

[0036] The axial sealing part includes: a sealing ring groove 202 and a first packing 5;

[0037] Specifically, multiple sealing ring grooves 202 are formed on the inner wall of the end cover half shell 2, and multiple first packings 5 ​​are set in the inner cavity of the sealing ring grooves 202. The first packings 5 ​​are used to seal the connection between the end cover half shell 2 and the rotating shaft 3.

[0038] It should be noted that the material of the first packing 5 is high-temperature resistant asbestos packing;

[0039] Specifically, the insertion part includes fixing bolts 4, and the ends of multiple fixing bolts 4 are sequentially inserted and connected to the side of the end cover half shell 2 and the side of the box body 1.

[0040] It should be noted that the side of the housing 1 is provided with threaded holes for the insertion of the fixing bolts 4, and the side of the end cover half shell 2 is provided with fixing holes 203 for the insertion of the fixing bolts 4.

[0041] Specifically, fixing bolts 4 secure the end cap half shell 2 to the housing 1; Example 2

[0042] An anti-loosening part is applied to the shaft end sealing device of the waste heat boiler scraper conveyor in Embodiment 1;

[0043] Specifically, the anti-loosening part includes a compression spring 2031, which is disposed in the inner cavity of the fixing hole 203 and sleeved on the outside of the fixing bolt 4. The inner wall of the fixing hole 203 is provided with an enlarged groove, which is used for the compression spring 2031 to deform under pressure. The compression spring 2031 pushes under pressure, which increases the friction at the thread engagement of the fixing bolt 4, thus preventing the fixing bolt 4 from loosening.

[0044] In actual use, a spliced ​​end cover half shell 2 is provided on the outside of the rotating shaft 3. The spliced ​​end cover half shell 2 is fixed to the housing 1 by the plug-in part in the fixing component. The inner wall and side of the end cover half shell 2 are provided with axial sealing part and lateral sealing part for sealing treatment. Compared with the integral end cover design, the split end cover half shell 2 structure of this design can directly remove the end cover and perform maintenance and replacement of the end cover half shell 2 without disassembling the bearing at the end of the rotating shaft 3.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing device for the shaft end of a waste heat boiler scraper conveyor, used for sealing the intersection of the shaft end (3) and the housing (1), characterized in that, include: End cap half shell (2), a plurality of said end cap half shells (2) are symmetrically arranged on the outside of the rotating shaft (3) and located on the outside of the box body (1); Fixing components, a plurality of the fixing components are used to fix the end cap half shell (2) and the box body (1). The fixing components are disposed at the connection between the end cap half shell (2) and the box body (1). The fixing components include a plug-in part. The end of the plug-in part is inserted and connected to the side of the end cap half shell (2) and the box body (1). The outer side of the plug-in part is provided with an anti-loosening part. A sealing assembly is used to seal the connection between the rotating shaft (3), the housing (1) and the end cover half shell (2). The sealing assembly includes an axial sealing part and a lateral sealing part. The axial sealing part is disposed on the inner wall of the end cover half shell (2), and the lateral sealing part is disposed on the side of the end cover half shell (2) near the housing (1).

2. The waste heat boiler scraper conveyor shaft end sealing device according to claim 1, characterized in that, The lateral sealing portion includes: A sealing half-groove (201) is formed on the side of the end cap half-shell (2); The second packing (6) is disposed in the inner cavity of the sealing half groove (201) and is used to seal the connection between the end cap half shell (2) and the box body (1). An isolation layer (7) is disposed on opposite sides of multiple end cap half shells (2) and is used to seal the joints of the multiple end cap half shells (2).

3. The waste heat boiler scraper conveyor shaft end sealing device according to claim 1, characterized in that, The axial sealing part includes: Sealing ring grooves (202), a plurality of the sealing ring grooves (202) are formed on the inner wall of the end cap half shell (2); First packing (5), a plurality of first packing (5) are disposed in the inner cavity of sealing ring groove (202), the first packing (5) is used to seal the connection between end cap half shell (2) and rotating shaft (3).

4. The waste heat boiler scraper conveyor shaft end sealing device according to claim 1, characterized in that, The insertion part includes fixing bolts (4), and the ends of multiple fixing bolts (4) are sequentially inserted and connected to the side of the end cover half shell (2) and the side of the box body (1).

5. The waste heat boiler scraper conveyor shaft end sealing device according to claim 4, characterized in that, The end cap half shell (2) has a fixing hole (203) on its side, which is used to fix the bolt (4) through.

6. The waste heat boiler scraper conveyor shaft end sealing device according to claim 5, characterized in that, The anti-loosening part includes a compression spring (2031), which is disposed in the inner cavity of the fixing hole (203) and sleeved on the outside of the fixing bolt (4).

7. The waste heat boiler scraper conveyor shaft end sealing device according to claim 6, characterized in that, An enlarged groove is provided on the inner wall of the fixing hole (203), which is used to compress the deformation of the spring (2031).

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