Improved outer layer runner

Abstract

The utility model discloses an improved outer layer pouring tube belongs to horizontal centrifugal casting field, this pouring tube includes pouring pipe body and baffle, and the baffle is the plate -like structure that can insert the front end of pouring pipe body, and its top end and bottom are all with the arc shape that pouring pipe outer wall contour matches, and both sides are vertical plane, baffle inserts after the outer surface and pipe body flush, form smooth transition structure. The utility model discloses through optimizing the baffle shape, avoided the equipment damage and fling water etc. safety quality accident caused because of front end protruding impact cold type end cap in the operation of pouring trolley, unified outer layer pouring tube specification simultaneously, reduced the operation difficulty and labor intensity, reduced the repair accident, effectively promoted the process quality guarantee ability.

Description

Technical Field

[0001] This utility model relates to the field of horizontal centrifugal casting technology, and in particular to an improved outer layer casting pipe. Background Technology

[0002] Horizontal centrifugal casting is a common casting process used to produce hollow cylindrical and tubular castings. During the outer pouring process, a pouring funnel is used in conjunction with an outer pouring pipe to guide and pour the molten metal. The outer pouring pipe is usually pre-inserted with refractory bricks and has a baffle installed at its front end to prevent material leakage during pouring. Currently, commonly used outer casting pipes are divided into two types: one is a structure with a front-end insert plate (such as...). Figure 1 , Figure 2 , Figure 3 As shown), the insert plate 2 is fixed to the front end of the casting pipe with screws, but the insert plate 2 usually protrudes from the outer wall of the pipe body; another type is the old-fashioned integrated casting pipe with a sealed front end, which has a closed structure at the front end and no protruding parts, but it needs to be assembled after passing through the brick, which is inconvenient to operate.

[0003] However, for some small-diameter products with small end cap diameters, the shaking of the funnel during the pouring trolley's movement after the outer layer of the centrifugal product has been poured may cause the outer pouring pipe to hit the cold-formed end cap. This is especially true for the insert plate at the front of the outer pouring pipe, which, being larger than the outer pouring pipe, could damage the end cap if it hits it, potentially causing water spillage and other safety and quality issues. Therefore, small-diameter products still use the old-style front-sealed integral outer pouring pipe. While the old-style front-sealed integral outer pouring pipe eliminates the risk of collision, the brick-piercing and assembly process is cumbersome, and the pouring pipe, after being inserted into the refractory brick, is quite heavy, making connection to the pouring funnel difficult. Frequent movement also carries the risk of damaging the refractory brick, affecting production efficiency and process quality.

[0004] Therefore, it is necessary to develop an improved outer casting pipe to overcome the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an improved outer casting pipe. By redesigning the baffle structure, after it is assembled with the casting pipe body, the front end forms a smooth transition without protrusions, thereby effectively avoiding safety and quality accidents such as damage to the cold-formed end cap and water splashing caused by the presence of protrusions during the operation of the casting trolley. This solution also achieves the standardization of the outer casting pipe specifications, reduces the difficulty and labor intensity of on-site operation, reduces the frequency of equipment rework, and comprehensively improves the reliability and stability of process quality.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An improved outer casting pipe includes a casting pipe body and a baffle. The baffle is a plate-like structure that can be inserted into the front end of the casting pipe body. The top end of the baffle has an arc shape that matches the outer wall contour of the casting pipe body. The lower end of the baffle is provided with a plug-in structure, and its bottom end is also an arc shape that matches the outer wall contour of the casting pipe body. Both sides of the baffle are vertical planar structures. After the baffle is inserted, its outer surface is flush with the outer wall of the casting pipe body, so that the front end of the casting pipe forms a smooth transition structure without protrusions.

[0007] A further improvement of this utility model is that: the baffle is provided with an installation hole, and the front end of the casting pipe body is provided with a threaded hole at the corresponding position, and the baffle is fixed to the casting pipe body by fastening screws.

[0008] A further improvement of this utility model is that the nut of the fastening screw is embedded or flush with the outer surface of the baffle, ensuring that there is no protrusion after fixing.

[0009] A further improvement of this utility model is that the thickness of the baffle is equivalent to the wall thickness of the casting pipe body, so that the continuity of the outer contour of the casting pipe is maintained after insertion.

[0010] A further improvement of this utility model is that the insertion end of the baffle is provided with a guide slope or rounded corner to facilitate the insertion operation.

[0011] A further improvement of this utility model is that the baffle is made of a high-temperature resistant metal material, and its material is the same as or similar to that of the casting pipe body.

[0012] A further improvement of this utility model is that the casting pipe body is a series of products with different diameters, and the baffle is designed to match the diameter specifications of the casting pipe body, which is suitable for the outer layer casting operation of various specifications of horizontal centrifugal casting products.

[0013] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows: 1. This utility model modifies the shape of the baffle so that there is no protrusion at the front of the outer pouring pipe after the outer pouring pipe is assembled with the baffle. This avoids the risk of the protrusion at the front of the outer pouring pipe damaging the cold end cap and causing water spillage and other safety and quality accidents during the pouring trolley's movement.

[0014] 2. This utility model standardizes the specifications of the outer pouring pipe on site by modifying the shape of the baffle, which reduces the labor intensity and operation difficulty on site, reduces the repair accidents of the outer pouring pipe, facilitates the brick threading and assembly work of on-site operators, ensures on-time production, reduces the intensity of work, and improves the quality assurance of the process.

[0015] 3. After the improved outer pouring pipe provided by this utility model is assembled through the brick, there is no protrusion at the front of the pouring pipe. This prevents the protrusion at the front of the outer pouring pipe from damaging the cold-formed end cap during the pouring trolley's movement, thus reducing quality accidents and the occurrence of defective products.

[0016] 4. This utility model has a simple structure, low modification cost, and is easy to promote and apply in production, with significant economic and safety benefits. Attached Figure Description

[0017] Figure 1 This is a front view of the existing outer casting pipe and insert plate assembly in the background technology of this utility model; Figure 2 This is a side view of the assembly of the outer casting pipe and the insert plate in the background technology of this utility model; Figure 3 This is a schematic diagram of the insert structure in the background art of this utility model; Figure 4 This is a front view of the assembly of the outer casting pipe and the improved baffle in an embodiment of this utility model; Figure 5 This is a side view of the assembly of the outer casting pipe and the improved baffle in an embodiment of this utility model; Figure 6 This is a schematic diagram of the improved baffle structure in an embodiment of this utility model; Among them, 1. casting pipe body; 2. insert plate; 3. baffle; 3-1. top end; 3-2. bottom end. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: like Figure 4 , Figure 5 , Figure 6 As shown, an improved outer casting pipe includes a casting pipe body 1 and a baffle 3. The casting pipe body 1 is made of metal and has a certain length and diameter, used to guide the casting material. The baffle 3 is a plate-shaped structure that can be inserted into the front end of the casting pipe body 1, and its outline is adapted to the front opening of the casting pipe body 1. After the baffle 3 is inserted, its outer surface is flush with the outer wall of the casting pipe body 1, so that the front end of the casting pipe forms a smooth transition structure without protrusions.

[0019] Furthermore, such as Figure 6 As shown, the top end 3-1 of the baffle 3 has an arc shape that matches the outline of the outer wall of the casting pipe body 1; the lower end 3-2 of the baffle 3 is provided with a plug-in structure, and its bottom end is also an arc shape that matches the outline of the outer wall of the casting pipe body 1; both sides of the baffle 3 are vertical planar structures.

[0020] Furthermore, the baffle 3 is provided with mounting holes, and the front end of the casting pipe body 1 is provided with threaded holes at the corresponding positions. The baffle 3 is fixed to the casting pipe body 1 by fastening screws.

[0021] Furthermore, the nuts of the fastening screws are embedded or flush with the outer surface of the baffle 3 to ensure that there are no protrusions after fixing.

[0022] Furthermore, the thickness of the baffle 3 is comparable to the wall thickness of the casting pipe body 1, maintaining the continuity of the outer contour of the casting pipe after insertion.

[0023] Furthermore, the insertion end of the baffle 3 is provided with a guide bevel or rounded corner to facilitate the insertion operation.

[0024] Furthermore, the baffle 3 is made of high-temperature resistant metal material, and its material is the same as or similar to that of the casting pipe body 1.

[0025] Furthermore, the casting pipe body 1 is a series of products with different diameters, and the baffle 3 is designed to match the diameter specifications of the casting pipe body 1, which is suitable for the outer layer casting operation of various specifications of horizontal centrifugal casting products.

[0026] In practice, the refractory bricks are first inserted through the rear end of the casting pipe, then the baffle 3 is inserted into the front end of the casting pipe and tightened with screws so that the outer surface of the baffle 3 is completely flush with the outer wall of the casting pipe without any protrusions.

[0027] The baffle 3 can be designed to match different outer diameter specifications of the casting pipe, ensuring that there are no protruding structures at the front end of the casting pipe of any specification. During use, the casting pipe is connected to the casting funnel and installed as a whole on the casting trolley for centrifugal casting. After casting is completed, when the casting trolley moves out, since there are no protrusions at the front end of the casting pipe, it will not collide with the cold-formed end cap, thus ensuring equipment and operational safety.

[0028] In summary, this utility model has a simple structure and is easy to implement. It is suitable for the outer layer casting operation of various horizontal centrifugal casting products and has high practicality and promotion value.

Claims

1. An improved outer layer pipe, characterized by: The system includes a casting pipe body (1) and a baffle (3). The baffle (3) is a plate-shaped structure that can be inserted into the front end of the casting pipe body (1). The top end (3-1) of the baffle (3) has an arc shape that matches the outer wall contour of the casting pipe body (1). The lower end (3-2) of the baffle (3) is provided with a plug-in structure, and its bottom end is also an arc shape that matches the outer wall contour of the casting pipe body (1). Both sides of the baffle (3) are vertical planar structures. After the baffle (3) is inserted, its outer surface is flush with the outer wall of the casting pipe body (1), so that the front end of the casting pipe forms a smooth transition structure without protrusions.

2. The improved outer casting pipe according to claim 1, characterized in that: The baffle (3) is provided with mounting holes, and the front end of the casting pipe body (1) is provided with threaded holes. The baffle (3) is fixed to the casting pipe body (1) by fastening screws.

3. The improved outer-layer tubular of claim 2, wherein: The nuts of the fastening screws are embedded or flush with the outer surface of the baffle (3) to ensure that there are no protrusions after fixing.

4. The improved outer-layer tubular according to claim 1, characterized in that: The thickness of the baffle (3) is equivalent to the wall thickness of the casting pipe body (1), and it maintains the continuity of the outer contour of the casting pipe after insertion.

5. The improved outer-layer tubular of claim 1, wherein: The insertion end of the baffle (3) is provided with a guide slope or rounded corner to facilitate insertion.

6. The improved outer-layer tubular of claim 1, wherein: The baffle (3) is made of high-temperature resistant metal material, and its material is the same as or similar to that of the casting pipe body (1).

7. The improved outer-layer tubular of claim 1, wherein: The casting pipe body (1) is a series of products with different diameters. The baffle (3) is designed to match the diameter specifications of the casting pipe body (1) and is suitable for the outer layer casting operation of various specifications of horizontal centrifugal casting products.

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