Sealing installation structure of rotating shaft of biomass pulverizer
By adopting a separate upper and lower felt sealing structure on the rotating shaft of the crusher, the problem of inconvenient replacement of traditional seals is solved, achieving a balance between sealing effect and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-14
AI Technical Summary
When the skeleton oil seal of the rotating shaft of a traditional crusher is damaged during high-speed rotation, it is difficult to replace, requiring the disassembly of the entire rotating shaft, which increases maintenance time and inconvenience.
The system employs a separate upper and lower felt installation and sealing method. The upper and lower sealing caps are nested and fixed to the rotating shaft and connected by bolt fasteners. The upper and lower felt seals are installed in their respective sealing grooves and joined together, achieving a sealing effect while facilitating replacement.
It achieves a sealing effect while simplifying the seal replacement process, avoiding the need to disassemble the entire rotating shaft, and improving the portability and efficiency of replacement.
Smart Images

Figure CN224120656U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biomass crushers, and in particular to a sealed installation structure for the rotating shaft of a biomass crusher. Background Technology
[0002] Traditional crushers typically use skeleton oil seals to seal the rotating shaft. However, if the seal is damaged during high-speed rotation, replacing it is very troublesome. It requires disassembling the entire rotating shaft, removing the skeleton oil seal from the end, and replacing it with a new one. This process increases maintenance and replacement time and is extremely inconvenient.
[0003] This utility model design adopts a separate upper and lower felt installation and sealing method, which not only achieves a sealing effect but also takes into account the portability of replacing the seal. There is no need to disassemble the entire rotating shaft for installation. The upper and lower sealing caps are nested and fixedly installed on the rotating shaft of the crusher, which is firmly locked and easy to disassemble and assemble. After opening, the upper and lower felt seals can be removed to replace the upper and lower felt seals. Utility Model Content
[0004] The main technical problem solved by this utility model is to provide a sealing installation structure for the rotating shaft of a biomass crusher, which can adopt a separate upper and lower felt installation sealing form, which not only achieves the sealing effect, but also takes into account the portability of replacing the seal, without having to disassemble the entire rotating shaft for installation.
[0005] To solve the above-mentioned technical problems, the present invention provides a sealing installation structure for the rotating shaft of a biomass crusher, including an upper sealing cover, a lower sealing cover, an upper felt seal, and a lower felt seal. The upper sealing cover and the lower sealing cover are nested and fixedly installed on the rotating shaft of the crusher. A sealing groove is provided on the inner side of both the upper sealing cover and the lower sealing cover. The upper felt seal and the lower felt seal are respectively installed into the sealing grooves on the inner side of the upper sealing cover and the lower sealing cover, and the upper felt seal and the lower felt seal are joined together. The connection between the upper felt seal and the lower felt seal is sealed and closed.
[0006] In a preferred embodiment of this utility model, the upper sealing cap and the lower sealing cap are nested and mounted around the rotating shaft of the crusher.
[0007] In a preferred embodiment of this utility model, bolt fasteners are connected to the cover bodies of the upper sealing cover and the lower sealing cover.
[0008] The beneficial effects of this utility model are: This utility model can adopt a separate upper and lower felt installation and sealing form, which not only achieves the sealing effect, but also takes into account the portability of replacing the seal. It does not require disassembling the entire rotating shaft for installation. The upper and lower sealing caps are nested and fixedly installed on the rotating shaft of the crusher, which is firmly locked and easy to disassemble and assemble. After opening, the upper and lower felt seals can be removed to replace the upper and lower felt seals. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0010] Figure 1 This is a schematic diagram of a preferred embodiment of a sealing installation structure for the rotating shaft of a biomass crusher according to the present invention;
[0011] Figure 2 This is a schematic diagram of the sealing installation structure of the rotating shaft of a biomass pulverizer when it is installed on the rotating shaft of the pulverizer.
[0012] The components in the attached diagram are labeled as follows: 1. Sealed upper end cover; 2. Sealed lower end cover; 3. Upper felt seal; 4. Lower felt seal. Detailed Implementation
[0013] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0014] Please see Figure 1 and Figure 2 The embodiments of this utility model include:
[0015] A sealing installation structure for the rotating shaft of a biomass crusher includes an upper sealing cover 1, a lower sealing cover 2, an upper felt seal 3, and a lower felt seal 4. The upper sealing cover 1 and the lower sealing cover 2 are nested and fixedly installed on the rotating shaft of the crusher. Sealing grooves are provided on the inner sides of both the upper sealing cover 1 and the lower sealing cover 2. The upper felt seal 3 and the lower felt seal 4 are respectively installed into the sealing grooves on the inner sides of the upper sealing cover 1 and the lower sealing cover 2, and the upper felt seal 3 and the lower felt seal 4 are joined together. The connection between the upper felt seal 3 and the lower felt seal 4 is sealed and closed.
[0016] In addition, the upper sealing cover 1 and the lower sealing cover 2 are nested together and mounted around the rotating shaft of the crusher.
[0017] In addition, bolt fasteners 5 are connected to the cover bodies of the upper sealing cover 1 and the lower sealing cover 2.
[0018] The structure of this utility model product is that the upper sealing cover 1 and the lower sealing cover 2 are nested and fixedly installed on the rotating shaft of the crusher. The upper sealing cover 1 and the lower sealing cover 2 are nested and installed around the rotating shaft of the crusher. Bolt fasteners 5 are connected to the cover body of the upper sealing cover 1 and the lower sealing cover 2.
[0019] Both the upper sealing cover 1 and the lower sealing cover 2 have sealing grooves on their inner sides. The upper felt seal 3 and the lower felt seal 4 are respectively installed into the sealing grooves on the inner sides of the upper sealing cover 1 and the lower sealing cover 2, and the upper felt seal 3 and the lower felt seal 4 are interlocked. The connection between the upper felt seal 3 and the lower felt seal 4 is sealed and closed. This utility model adopts a separate upper and lower felt installation and sealing form, which not only achieves the sealing effect, but also takes into account the portability of replacing the seal. It does not require disassembling the entire rotating shaft for installation. The upper sealing cover 1 and the lower sealing cover 2 are nested and fixedly installed on the rotating shaft of the crusher, which is firmly locked and easy to disassemble and assemble. After opening, the upper felt seal 3 and the lower felt seal 4 can be replaced by taking them out from the top and bottom.
[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A sealing installation structure for the rotating shaft of a biomass crusher, comprising an upper sealing cover, a lower sealing cover, an upper felt seal, and a lower felt seal, characterized in that, The upper sealing cover and the lower sealing cover are nested and fixedly installed on the rotating shaft of the crusher. Both the upper sealing cover and the lower sealing cover have sealing grooves on their inner sides. The upper felt seal and the lower felt seal are respectively installed into the sealing grooves on the inner sides of the upper sealing cover and the lower sealing cover, and the upper felt seal and the lower felt seal are joined together and sealed at the connection between the upper felt seal and the lower felt seal.
2. The sealing installation structure for the rotating shaft of a biomass crusher according to claim 1, characterized in that, The upper sealing cap and the lower sealing cap are nested together and mounted around the rotating shaft of the crusher.
3. The sealing installation structure for the rotating shaft of a biomass pulverizer according to claim 1, characterized in that, Bolt fasteners are connected to the cover bodies of the upper and lower sealing caps.