Breathable upper nozzle capable of preventing negative pressure in steel pouring process
By designing a breathable water supply port with a longitudinal air chamber, a breathable groove, an internal protective cover and a longitudinal protective cover, the negative pressure problem caused by the reduction of back pressure during the pouring process is solved, and the stability of back pressure and the pouring process is achieved. The normal ending.
Patent Information
- Application Number
- CN202420174374.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-24
AI Technical Summary
During the steel pouring process, ordinary breathable water outlets become longer as time goes by, and the inner holes are washed and the back pressure decreases, resulting in negative pressure, and the final pouring cannot be done normally.
A breathable water supply port including a longitudinal air chamber, an air permeable groove, an internal protective cover and a longitudinal protective cover is designed. Through structures such as metal assembly shrapnel and metal protective net, the back pressure is maintained and the negative pressure is prevented from occurring.
It effectively solves the negative pressure problem caused by the reduction of back pressure, maintains the relative stability of back pressure, ensures the normal final pouring of the steel casting process, and reduces the cost of later use through the detachable structural design.
Smart Images
Figure CN222470703U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water inlets, in particular to a breathable water inlet which can prevent negative pressure from occurring during steel pouring. Background Art
[0002] As steel mills have become increasingly strict with the flow rate and back pressure of the breathable nozzles during the steel pouring process, the original ordinary breathable nozzles can no longer meet the requirements of some steel mills. During use, as the steel pouring time becomes longer, the inner hole is flushed and the nozzle back pressure will become lower and lower, resulting in negative pressure and unable to perform normal final pouring. Utility Model Content
[0003] The technical problem to be solved by the utility model is that as the steel pouring time of ordinary breathable nozzles becomes longer during use, the inner hole is flushed and the back pressure of the nozzle becomes lower and lower, resulting in negative pressure and failure of normal final pouring.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a breathable upper water inlet for preventing negative pressure from occurring during steel pouring, comprising an upper water inlet body, a longitudinal air chamber being provided inside the upper water inlet body, an air permeable groove communicating with the interior of the longitudinal air chamber being provided on the inner side surface of the upper water inlet body, an installation groove being provided on the inner side surface of the upper water inlet body corresponding to the position of the air permeable groove, an internal protective cover being fixedly installed inside the installation groove, a longitudinal strip air guide port communicating with the air permeable groove being provided on the inner arc surface of the internal protective cover, and the inner side surface of the internal protective cover being elastically equipped with the longitudinal protective cover at the opening position of the longitudinal strip air guide port.
[0005] The inner top surface and the inner bottom surface of the longitudinal strip-shaped air guide port are provided with metal assembly spring pieces protruding toward the inside of the longitudinal strip-shaped air guide port.
[0006] The metal assembly spring sheet has an inner bending limiting section of an integral structure bent toward the inside of the longitudinal air chamber.
[0007] The longitudinal protective cover is internally fixedly provided with a metal protective net for resisting erosion.
[0008] The longitudinal protective cover comprises a flip cover shell installed inside the longitudinal strip air guide port and a metal reset spring fixed on the flip cover shell and the inner side wall of the internal protective cover.
[0009] A built-in extrusion spring is fixed on the inner side of the flip cover.
[0010] The beneficial effects of the utility model are:
[0011] (1) The utility model prevents negative pressure from occurring during the steel pouring process by providing an internal protective cover with a longitudinal strip-shaped air guide port at the position of the air vent. A longitudinal protective cover with a metal protective net installed inside is elastically mounted on the inner side of the internal protective cover, which can resist scouring and prevent the inner hole from expanding, and can also protect the air permeable layer from being eroded and scour. During use, the back pressure can remain relatively stable, effectively solving the problem of negative pressure.
[0012] (2) The detachable structure design facilitates subsequent maintenance and reduces subsequent use costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] Figure 2 It is a structural schematic diagram of the longitudinally arranged protective cover in the utility model. DETAILED DESCRIPTION
[0016] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0018] Figure 1 and Figure 2 The breathable upper water inlet shown in the figure prevents negative pressure from occurring during the steel pouring process, comprises an upper water inlet body 1, a longitudinal air chamber 2 is provided inside the upper water inlet body 1, a breathable groove 3 connected to the interior of the longitudinal air chamber 2 is provided on the inner side surface of the upper water inlet body 1, a mounting groove 4 is provided on the inner side surface of the upper water inlet body 1 corresponding to the position of the breathable groove 3, an internal protective cover 5 is fixedly installed inside the mounting groove 4, a longitudinal strip air guide port 6 connected to the breathable groove 3 is provided on the inner arc surface of the internal protective cover 5, and a longitudinal protective cover 7 is elastically assembled on the inner side surface of the internal protective cover 5 at the opening position of the longitudinal strip air guide port 6.
[0019] In order to improve the longitudinal anti-seismic performance and stability of the longitudinal protective cover 7 , the inner top surface and the inner bottom surface of the longitudinal strip air guide port 6 are provided with metal assembly spring pieces 8 protruding toward the inside of the longitudinal strip air guide port 6 .
[0020] In order to improve the release of the internal protective cover 5 , the metal assembly spring 8 has an inner bending limit section 9 of an integral structure bent toward the inside of the longitudinal air chamber 2 .
[0021] The inner bending limit section 9 is stuck on the inner wall of the longitudinal air chamber 2, thereby preventing the internal protective cover 5 from being loosened from the inside of the mounting groove 4. When disassembling, the longitudinal protective cover 7 is turned outward, and then the metal assembly spring 8 is pressed inward to separate the inner bending limit section 9 from the inner wall of the longitudinal air chamber 2, so that the internal protective cover 5 can be easily detached from the inside of the mounting groove 4.
[0022] In order to resist scouring, prevent the inner hole from expanding, and protect the breathable layer from being eroded and scoured, the back pressure can be kept relatively stable during use, effectively solving the problem of negative pressure. A metal protective mesh 10 for resisting scouring is fixedly installed inside the longitudinal protective cover 7.
[0023] For installation, air guiding and elastic reset, the longitudinal protective cover 7 includes a flip cover shell 71 installed inside the longitudinal strip air guide port 6 and a metal reset spring 72 fixed on the flip cover shell 71 and the inner side wall of the internal protective cover 5 .
[0024] In order to improve the internal elastic reset effect of the flip cover 71, a built-in extrusion spring 73 is fixed on the inner side of the flip cover 71. One side of the built-in extrusion spring 73 is fixed on the inner side of the flip cover 71, and the other side presses upward on the inner top surface of the venting groove 3.
[0025] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A ventilated water inlet for preventing negative pressure from occurring during steel pouring, comprising a water inlet body (1), characterized in that: The upper nozzle body (1) is provided with a longitudinal air chamber (2) inside, and an air permeable groove (3) communicating with the interior of the longitudinal air chamber (2) is provided on the inner side surface of the upper nozzle body (1), and an installation groove (4) is provided on the inner side surface of the upper nozzle body (1) corresponding to the position of the air permeable groove (3), and an internal protective cover (5) is fixedly installed inside the installation groove (4), and a longitudinal strip air guide port (6) communicating with the air permeable groove (3) is provided on the inner curved surface of the internal protective cover (5), and a longitudinal protective cover (7) is elastically mounted on the inner side surface of the internal protective cover (5) at the opening position of the longitudinal strip air guide port (6).
2. The ventilated upper water inlet for preventing negative pressure from occurring during steel pouring according to claim 1 is characterized in that: The inner top surface and the inner bottom surface of the longitudinal strip-shaped air guide port (6) are provided with metal assembly spring pieces (8) protruding toward the inside of the longitudinal strip-shaped air guide port (6).
3. The ventilated upper water inlet for preventing negative pressure from occurring during steel pouring according to claim 2 is characterized in that: The metal assembly spring sheet (8) has an inner bending limit section (9) of an integral structure that is bent toward the inside of the vertical air chamber (2).
4. The ventilated upper water inlet for preventing negative pressure from occurring during steel pouring according to claim 1 is characterized in that: The longitudinal protective cover (7) is internally fixed with a metal protective net (10) for resisting erosion.
5. The ventilated upper water inlet for preventing negative pressure from occurring during steel pouring according to claim 1 is characterized in that: The longitudinal protective cover (7) comprises a flip cover shell (71) installed inside the longitudinal strip-shaped air guide port (6) and a metal reset spring (72) fixed on the flip cover shell (71) and the inner side wall of the internal protective cover (5).
6. The ventilated upper water inlet for preventing negative pressure from occurring during steel pouring according to claim 5 is characterized in that: A built-in extrusion spring (73) is fixed on the inner side of the flip cover (71).