Wear-resistant gas jet device
By adding aluminum oxide ceramic inner lining and outer protective bushing to the key contact surfaces of the jet, the wear problem of high-speed dust-containing airflow on the jet components is solved, extending the service life and maintaining the power performance.
Patent Information
- Application Number
- CN202420672044.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-03
AI Technical Summary
Existing jets are easily worn in high-speed dust-containing airflow, resulting in damage to components and short service life.
The jet liner and compressed air outer protective bushing of the outer wall of the compressed air pipe are installed on the inner wall of the large and small head and the outlet connecting pipe, and wear-resistant materials such as aluminum oxide ceramics are used to reduce direct contact with the dust air flow.
It extends the service life of the jet, maintains the original power performance, and reduces wear and improves wear resistance through the use of lining materials.
Smart Images
Figure CN222141628U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of ejector devices, and in particular to a wear-resistant gas ejector device. Background Art
[0002] The design and products of ejectors are mostly used for water flow and clean gas media. However, with the expansion of the market and technology, ejectors are used in more and more application scenarios of dust-containing airflow, such as multi-point sampling of CEMC in denitrification systems (SCR).
[0003] The existing ejector usually includes an outlet flange, an outlet connecting pipe and a reducer, which are connected and fixed in sequence. A compressed air pipe is arranged in the reducer, and a compressed air connecting flange is arranged on the part of the compressed air pipe extending outside the reducer. A compressed air nozzle is arranged on one end of the compressed air pipe located in the reducer.
[0004] Since the dust concentration at the sampling point is very high and the speed is very fast, during the operation of the ejector, the reducer and reducer, compressed air pipe and compressed air nozzle are all in contact with the high-speed and dusty airflow, and are easily worn by the high-speed and dusty airflow and worn through in a short time, causing damage to the ejector. Utility Model Content
[0005] In order to improve the problem that the components of the ejector are easily worn and damaged by high-speed and dust-containing airflow, the present application provides a wear-resistant gas ejector device.
[0006] The present application provides a wear-resistant gas jet device adopts the following technical solution:
[0007] A wear-resistant gas jet device comprises an outlet flange, an outlet connecting pipe and a reducer which are connected and fixed in sequence, a compressed air pipe is arranged inside the reducer, a compressed air connecting flange is arranged on the part of the compressed air pipe extending outside the reducer, a compressed air nozzle is arranged on one end of the compressed air pipe located inside the reducer, a working medium inlet is arranged on the side wall of the reducer, an ejector liner is arranged on the inner wall of the reducer and the inner wall of the outlet connecting pipe close to the reducer, and a compressed air outer protective sleeve is arranged on the outer wall of the compressed air pipe inside the reducer.
[0008] In one embodiment, the ejector liner and the compressed air outer protective sleeve are made of a material including aluminum oxide ceramics.
[0009] The wear-resistant gas jet device provided in the embodiment of the present disclosure can achieve the following technical effects:
[0010] In actual use, the inner wall of the reducer, the inner wall of the outlet connecting pipe close to the reducer, and the outer wall of the compressed air pipe in the reducer are in contact with the high-speed dust-laden airflow for a long time. By adding linings to these contact surfaces, the high-speed dust-laden medium is prevented from contacting the ordinary steel of the ejector itself, greatly extending the service life of the ejector. At the same time, the dimensions of the original ejector's key structure are maintained, and the original dynamic performance of the ejector is maintained.
[0011] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic structural diagram of an existing wear-resistant gas jet device provided in an embodiment of the present application.
[0013] Figure 2 It is a schematic structural diagram of a wear-resistant gas jet device provided with an ejector liner and a compressed air outer protective sleeve provided in an embodiment of the present application.
[0014] Explanation of the accompanying reference numerals: 1. Outlet flange; 2. Outlet connecting pipe; 3. Reducer and reducer; 4. Compressed air nozzle; 5. Compressed air pipe; 6. Working medium inlet; 7. Compressed air connecting flange; 8. Ejector lining; 9. Compressed air outer protective sleeve. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0016] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0017] The following is combined with Figure 1-2 This application is described in further detail.
[0018] A wear-resistant gas jet device comprises an outlet flange 1, an outlet connecting pipe 2 and a reducer 3 which are connected and fixed in sequence, a compressed air pipe 5 is arranged inside the reducer 3, a compressed air connecting flange 7 is arranged on the part of the compressed air pipe 5 extending outside the reducer 3, a compressed air nozzle 4 is arranged on one end of the compressed air pipe 5 located inside the reducer 3, a working medium inlet 6 is arranged on the side wall of the reducer 3, an ejector lining 8 is arranged on the inner wall of the reducer 3 and the inner wall of the outlet connecting pipe 2 close to the reducer 3, and a compressed air outer protective bushing 9 is arranged on the outer wall of the compressed air pipe 5 inside the reducer 3.
[0019] In actual use, the inner wall of the reducer 3, the inner wall of the outlet connecting pipe 2 near the reducer 3, and the outer wall of the compressed air pipe 5 in the reducer 3 are in contact with the high-speed dusty airflow for a long time. By adding linings to these contact surfaces, the high-speed dusty medium is prevented from contacting the ordinary steel of the ejector itself, greatly extending the service life of the ejector. At the same time, the dimensions of the original ejector's key structure are maintained, and the original dynamic performance of the ejector is maintained.
[0020] In one embodiment, the material of the ejector liner 8 and the compressed air outer protective liner 9 includes aluminum oxide ceramics, which has good wear resistance.
[0021] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A wear-resistant gas jet device, comprising an outlet flange, an outlet connecting pipe and a reducer which are connected and fixed in sequence, wherein a compressed air pipe is arranged inside the reducer, a compressed air connecting flange is arranged on the part of the compressed air pipe extending outside the reducer, a compressed air nozzle is arranged on one end of the compressed air pipe located inside the reducer, and a working medium inlet is arranged on the side wall of the reducer, characterized in that: The inner wall of the reducer and the inner wall of the outlet connecting pipe near the reducer are provided with an ejector liner, and the outer wall of the compressed air pipe in the reducer is provided with a compressed air outer protective sleeve; The inner wall of the reducer, the inner wall of the outlet connecting pipe close to the reducer, and the outer wall of the compressed air pipe in the reducer are in contact with the high-speed dust-laden airflow.
2. The wear-resistant gas jet device according to claim 1, characterized in that: The materials used to make the ejector inner lining and the compressed air outer protective sleeve include aluminum oxide ceramics.