Design of stream inoculation pipe

Abstract

The utility model relates to a metal-stream inoculation pipe. The metal-stream inoculation pipe comprises a copper pipe and a flat duckbilled piece. One side of the copper pipe is connected with one end of a pipe body of the flat duckbilled piece, and the flat duckbilled piece is composed of a flat opening, the pipe body matched with the copper pipe and a hose clamp lock. The utility model aims to provide the design of the stream inoculation pipe, and the purposes of controlling the product quality and reducing the cost are achieved by adding all the stream inoculants into the molten iron according to the designed adding amount of the stream inoculants.

Description

Technical Field

[0001] The utility model belongs to the field of automotive casting pouring, and specifically relates to the design of a in-stream inoculation tube. Background Art

[0002] With the gradual development of the automotive industry, whether it is fuel vehicles or new energy vehicles, there are strict requirements for the internal quality of castings, especially for the mechanical properties and metallographic structure of castings, which are clearly defined. The commonly used braking system of automobiles is mainly made of gray cast iron brake discs, and the commonly used special system of automobiles is mainly made of nodular cast iron steering knuckles. Whether it is gray cast iron or nodular cast iron, they all belong to inoculated cast iron. Therefore, during the pouring of molten iron, good in-process inoculation is required to meet the product performance conditions.

[0003] Currently, the in-process inoculation methods used include bottom inoculation in ladles, inverted ladle inoculation, and in-stream inoculation. The inoculation method that has the best effect on products is in-stream inoculation. However, in current production, the importance of in-stream inoculation is not enough. Under the existing process, in-stream inoculation only uses a pipeline to spray inoculants into the molten iron by means of pneumatic conveying. Since the particle size of the inoculants is 0.2 - 0.7 mm, when spraying the inoculants, the small-sized inoculants will be affected by thermal expansion and the flow rate of the molten iron, resulting in the actual amount of inoculants entering the molten iron, that is, the actual effective amount of inoculants is less than the theoretical calculation. Most of the inoculants will be wasted during the pouring process. The inoculants are sprayed in a scattered form when ejected by compressed air. Since there is a certain distance between the end of the barrel and the molten iron flow, the inoculants are sprayed outside the molten iron, resulting in poor product performance and increased production costs for the company.

[0004] Therefore, in view of the above problems, a new in-stream inoculation tube needs to be designed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an in-stream inoculation tube, so that all the added amount of inoculants can enter the molten iron, in order to solve problems such as poor quality of poured products and waste of costs.

[0006] The utility model is realized through the following technical solutions:

[0007] The utility model relates to the design of an in-stream inoculation tube, including: a copper tube and a flat duckbill part. One side of the copper tube is connected to one end of the tube body of the flat duckbill part. The flat duckbill part consists of a flat opening, a tube body that cooperates with the copper tube, and a hose clamp lock. Among them, there is a flat opening with a width of 4 mm and a length of 25 mm.

[0008] Preferably, one side of the copper tube is connected to one end of the tube body of the flat duckbill part, and the connection part is tightly fastened through the hose clamp lock in cooperation with a 1.5 - mm groove opened on the tube body of the flat duckbill part.

[0009] Preferably, a gradually decreasing transition section is provided at the middle position of the tube body of the flat duckbill part, and its flat opening needs to be aligned with the position of the molten iron flow.

[0010] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0011] 1. By installing a flat duckbill part at the end of the copper tube, the present utility model has an effect of gathering the inoculant flowing with the molten iron, enabling all the inoculant to enter the molten iron and realizing the controllability of product performance.

[0012] 2. The present utility model adopts a flat duckbill structure, which is light in weight, convenient to install and low in cost, and is more convenient for controlling the inoculant compared with directly making a flat opening at the end of the tube.

[0013] 3. The present utility model reduces the damage of the original inoculation copper tube and lowers the cost of low consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is the overall side view of the present utility model;

[0016] Figure 2 is the cross-sectional view of the tube body slot of the present utility model;

[0017] Figure 3 is the cross-sectional view of the hose clamp lock of the present utility model;

[0018] Figure 4 is the side view of the copper tube used by the present utility model for comparison with the prior art;

[0019] In the figure: 1, copper tube; 2, flat duckbill part; 21, flat opening; 22, tube body; 23, hose clamp lock. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to describe in detail the structural features, technical solutions and functional characteristics of the present utility model, the present utility model will be further described below in conjunction with the drawings and embodiments:

[0021] Refer to Figures 1-4As shown in the figure, the design of a kind of in-stream inoculation tube of the utility model includes: a copper tube and a flat duckbill part. One side of the copper tube is connected to one end of the tube body of the flat duckbill part. The flat duckbill part consists of a tube body that cooperates with the copper tube, a flat opening and a hose clamp lock. There is a flat opening with a width of 4 mm and a length of 25 mm.

[0022] Among them, one side of the copper tube is connected to one end of the tube body of the flat duckbill part. The connection part is fastened in cooperation with a 1.5-mm groove opened on the tube body of the flat duckbill part through the hose clamp lock. The tube body can adjust the extended length according to the working requirements and be fastened after adjustment, which is relatively convenient for installation.

[0023] Among them, a gradually decreasing transition section is arranged at the middle position of the tube body of the flat duckbill part to reduce the divergence angle. Its flat opening needs to be aligned with the position of the molten iron flow. The flat opening is aligned with the molten iron flow, reducing the overflow of the inoculant to both sides, improving the absorption rate of the inoculant, and making it more convenient to control the inoculant.

[0024] The working process of the device of the utility model:

[0025] The inoculant enters the copper tube in the form of a scattered liquid ejected by compressed air, and then passes through the tube body of the flat duckbill part fastened by the hose clamp lock. Then the inoculant enters the gradually decreasing transition section to the flat opening, and its flat opening is aligned with the position of the molten iron, so that the inoculant is sprayed into the molten iron.

[0026] It should be understood that the above-mentioned embodiments of the utility model are only examples given in detail to illustrate the utility model, rather than limitations on the implementation manners of the utility model. For those of ordinary skill in the art in this technical field, various changes or modifications can be made on the basis of the above description. Any different forms of changes or modifications derived from the technical solutions of the utility model are also regarded as the protection scope of the appended claims of this application.

Claims

1. Design of a flow - along inoculation tube, comprising: Copper tube (1), flat duckbill part (2), characterized in that one side of the copper tube (1) is connected to one end of the tube body (22) of the flat duckbill part (2), and the flat duckbill part (2) is composed of a flat opening (21), a tube body (22) that cooperates with the copper tube, and a hose clamp lock (23), and a flat opening (21) with a width of 4 mm and a length of 25 mm is provided therein.

2. The design of a in-stream inoculation tube according to claim 1, characterized in that, One side of the copper tube (1) is connected to one end of the tube body (22) of the flat duckbill part (2), and the connection is fastened by cooperating with a 1.5-mm groove provided on the tube body (22) of the flat duckbill part (2) through the hose clamp lock (23).

3. The design of a in-stream inoculation tube according to claim 1, characterized in that, A gradually decreasing transition section is provided at the middle position of the tube body (22) of the flat duckbill part (2), and its flat opening (21) needs to be aligned with the position of the molten iron flow.

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