Pool-shaped pouring cup

Abstract

The utility model provides a pool-shaped pouring cup, which belongs to the technical field of casting and comprises a pouring cup sand mold, a first pouring groove and a second pouring groove which are sequentially communicated are arranged on the upper end face of the pouring cup sand mold, the bottom face of the second pouring groove is communicated with a direct pouring gate, and the lower end of the direct pouring gate extends to the lower end face of the pouring cup sand mold. The cross section of the first pouring groove is larger than that of the second pouring groove, the bottom face of the first pouring groove is lower than that of the second pouring groove so that a dam structure can be formed at the bottom of the first pouring groove and the bottom of the second pouring groove, and a slag baffle is longitudinally arranged on the side, close to the second pouring groove, of the first pouring groove. And an overflowing gap is formed between the lower end of the slag baffle and the bottom surface of the first pouring groove. The pool-shaped pouring cup provided by the utility model can avoid the cold shut defect caused by the fact that a first strand of molten metal enters a cavity, plays a role in stabilizing flow to prevent gas entrapment, ensures that the molten metal entering the casting cavity through a direct pouring gate is pure, and avoids the defect of slag inclusion of a casting.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of foundry technology, more specifically, relates to a pool-shaped sprue cup. BACKGROUND

[0002] The sprue cup is a tool used in the casting process, which is located at the top of the pouring system, and plays a role in receiving metal liquid, reducing splashing and overflow, facilitating pouring, and reducing the impact of metal liquid on the mold. Specifically, the structure of the sprue cup is usually funnel-shaped, which can be manufactured separately or directly formed in the mold. When the metal liquid flows out from the ladle, the sprue cup helps to guide the metal liquid to flow smoothly into the straight sprue, avoiding damage to the mold or casting defects caused by direct impact.

[0003] In order to further buffer the metal liquid, the sprue cup can be designed into a pool-shaped structure, and the metal liquid is first poured into the pool-shaped structure, and then slowly flows into the straight sprue as the liquid level rises. Although the existing pool-shaped sprue cup can achieve the effect of buffering the metal liquid, the slag blocking effect is relatively poor, and the oxidized waste slag in the metal liquid is easy to enter the casting cavity through the straight sprue, ultimately causing the defect of slag inclusion in the casting. SUMMARY

[0004] The utility model aims at providing a pool-shaped sprue cup, which can improve the slag blocking effect and reduce the slag inclusion defect of the casting.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a pool-shaped sprue cup, which comprises a sprue cup sand mold, a first pouring groove and a second pouring groove are sequentially communicated on the upper end face of the sprue cup sand mold, a straight sprue is communicated with the bottom surface of the second pouring groove, the lower end of the straight sprue extends to the lower end face of the sprue cup sand mold, the cross section of the first pouring groove is larger than that of the second pouring groove, the bottom surface of the first pouring groove is lower than that of the second pouring groove, so as to form a dam structure at the bottom of the first pouring groove and the second pouring groove, a slag blocking plate is longitudinally arranged on one side of the first pouring groove close to the second pouring groove, an overflow gap is formed between the lower end of the slag blocking plate and the bottom surface of the first pouring groove, and the upper end of the overflow gap is lower than the upper end of the dam structure.

[0006] In a possible implementation manner, the cross sections of the first pouring groove and the second pouring groove decrease from top to bottom.

[0007] In a possible implementation manner, the cross section of the straight sprue decreases from top to bottom.

[0008] In a possible implementation manner, the height of the dam structure is greater than 2 times the height of the overflow gap.

[0009] In a possible implementation, the slag dam is made of ceramic material.

[0010] In a possible implementation, the inner wall of the first pouring channel, the inner wall of the second pouring channel, the inner wall of the straight sprue and the outer surface of the slag dam are provided with a refractory layer.

[0011] In a possible implementation, the two sides of the slag dam are respectively embedded in the interior of the sprue cup sand mold.

[0012] In a possible implementation, horizontal positioning plates are respectively welded on the upper portions of the two sides of the slag dam, and the positioning plates are embedded in the interior of the sprue cup sand mold.

[0013] In a possible implementation, a slag filter screen is arranged in the flow gap.

[0014] In a possible implementation, the lower end of the slag filter screen is embedded in the bottom of the first pouring channel, and the upper end of the slag filter screen is inserted into the lower end of the slag dam.

[0015] The pool-shaped sprue cup has the advantages that compared with the prior art, the first pouring channel and the second pouring channel of the sprue cup sand mold are sequentially communicated, and the straight sprue is communicated at the bottom of the second pouring channel. A dam structure is formed between the first pouring channel and the second pouring channel, the slag dam is longitudinally arranged on one side of the first pouring channel close to the second pouring channel, and a flow gap is formed between the lower end of the slag dam and the bottom surface of the first pouring channel. When the pool-shaped sprue cup is used for pouring, the metal liquid first enters the first pouring channel, the metal liquid passes through the flow gap at the lower end of the slag dam, is blocked by the dam structure, and as the liquid surface of the metal liquid rises in the first pouring channel, the liquid surface gradually exceeds the dam structure and slowly flows into the second pouring channel, and finally flows into the casting cavity through the straight sprue. The first pouring channel can buffer the impact of the metal liquid, can prevent the generation of horizontal vortex and form vertical vortex, and thus is beneficial to separating slag and bubbles. The waste slag impurities in the metal liquid float on the upper layer of the metal liquid, and thus are blocked by the slag dam. The waste slag impurities cannot pass through the flow gap, the metal liquid passing through the straight sprue into the casting cavity is pure, and the casting part is prevented from having the defect of slag inclusion. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1The utility model provides a pool-shaped gate cup's structure schematic diagram for first kind of embodiment of the utility model.

[0018] Figure 2 The utility model provides a pool-shaped gate cup's plan view for first kind of embodiment of the utility model.

[0019] Figure 3 The utility model provides a pool-shaped gate cup's structure schematic diagram for second kind of embodiment of the utility model.

[0020] Figure 4 The utility model provides a pool-shaped gate cup's plan view for second kind of embodiment of the utility model.

[0021] Figure 5 The utility model provides a pool-shaped gate cup's structure schematic diagram for third kind of embodiment of the utility model.

[0022] In the drawing: 1, gate cup sand mould, 2, first pouring groove, 3, second pouring groove, 4, straight gate, 5, dam structure, 6, slag baffle, 7, overflow gap, 8, positioning plate, 9, slag filter screen. DETAILED DESCRIPTION

[0023] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly, the following is combined with the drawing and embodiment, and the utility model is further detailedly explained.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0024] Unless otherwise explicitly defined, as using the term "first", "second" or "third" and the like, is for distinguishing different objects, and is not used to describe a particular order.

[0025] Unless otherwise explicitly defined, for the orientation words, such as using the term "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low" and the like indicate the orientation or position relationship based on the orientation and position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, so it can not be understood as limiting the specific protection scope of the utility model.

[0026] Please refer to Figure 1 And Figure 2The utility model provides a pool shape gate cup with the first pouring groove 2 and the second pouring groove 3 of gate cup sand mould 1 are communicated in proper order, and the straight gate 4 is communicated at the bottom of the second pouring groove 3. The dam structure 5 is formed between the first pouring groove 2 and the second pouring groove 3, and the overflow gap 7 is formed between the lower end of the slag baffle 6 and the bottom of the first pouring groove 2. When pouring with the pool shape gate cup, the metal liquid first enters the first pouring groove 2, and after passing through the overflow gap 7 at the lower end of the slag baffle 6, is blocked by the dam structure 5. As the liquid level of the metal liquid rises in the first pouring groove 2, the liquid level gradually exceeds the dam structure 5 and slowly flows into the second pouring groove 3, and finally flows into the casting cavity through the straight gate 4. The first pouring groove 2 can buffer the impact of the metal liquid, prevent the generation of horizontal vortex and form vertical vortex, thereby facilitating the separation of slag and bubbles. The waste slag impurities in the metal liquid will float on the upper layer of the metal liquid, thereby being blocked by the slag baffle 6, and the waste slag impurities will not pass through the overflow gap 7, ensuring that the metal liquid entering the casting cavity through the straight gate 4 is pure, and avoiding the defects of slag inclusion in the casting.

[0027] The utility model provides a pool shape gate cup with the first pouring groove 2 and the second pouring groove 3 of gate cup sand mould 1 are communicated in proper order, and the straight gate 4 is communicated at the bottom of the second pouring groove 3. The dam structure 5 is formed between the first pouring groove 2 and the second pouring groove 3, and the overflow gap 7 is formed between the lower end of the slag baffle 6 and the bottom of the first pouring groove 2. When pouring with the pool shape gate cup, the metal liquid first enters the first pouring groove 2, and after passing through the overflow gap 7 at the lower end of the slag baffle 6, is blocked by the dam structure 5. As the liquid level of the metal liquid rises in the first pouring groove 2, the liquid level gradually exceeds the dam structure 5 and slowly flows into the second pouring groove 3, and finally flows into the casting cavity through the straight gate 4. The first pouring groove 2 can buffer the impact of the metal liquid, prevent the generation of horizontal vortex and form vertical vortex, thereby facilitating the separation of slag and bubbles. The waste slag impurities in the metal liquid will float on the upper layer of the metal liquid, thereby being blocked by the slag baffle 6, and the waste slag impurities will not pass through the overflow gap 7, ensuring that the metal liquid entering the casting cavity through the straight gate 4 is pure, and avoiding the defects of slag inclusion in the casting.

[0028] Please refer to Figure 1 , Figure 3 and Figure 5 , the cross sections of the first pouring groove 2 and the second pouring groove 3 decrease from top to bottom, the liquid level of the metal liquid entering the first pouring groove 2 and the second pouring groove 3 can slowly rise, ensuring the stability of the metal liquid pouring process, and at the same time, the first pouring groove 2 and the second pouring groove 3 with the open structure can not only accommodate more metal liquid, but also facilitate pouring. The cross section of the straight gate 4 decreases from top to bottom, the metal liquid entering the straight gate 4 is effectively converged before flowing into the casting cavity, and especially when the volume of the metal liquid is large, the metal liquid can also be buffered in the straight gate 4.

[0029] Preferably, the height of the dam structure 5 is greater than 2 times the height of the flow gap 7, so that the molten metal cannot directly enter the second runner 3 after passing through the flow gap 7, but is blocked by the dam structure 5, and the dam structure 5 has sufficient height relative to the flow gap 7 to improve the effect of blocking the molten metal by the dam structure 5.

[0030] Specifically, the slag dam plate 6 is made of ceramic material and has high fire resistance, so that it can withstand the temperature of the molten metal without deformation or damage.

[0031] In addition, the inner wall of the first runner 2, the inner wall of the second runner 3, the inner wall of the straight sprue 4, and the outer surface of the slag dam plate 6 are provided with a refractory layer. The refractory layer is formed by manually brushing and drying refractory paint, which can effectively protect the inner wall of the first runner 2, the inner wall of the second runner 3, the inner wall of the straight sprue 4, and the outer surface of the slag dam plate 6, form an isolation, and avoid the combination of the above-mentioned areas and the molten metal caused by high temperature, thereby avoiding defects.

[0032] Please refer to Figure 2 In the second embodiment, the two sides of the slag dam plate 6 are respectively provided with a positioning plate 8 embedded in the inside of the sprue cup sand mold 1. Specifically, the two sides of the slag dam plate 6 are respectively horizontally welded with a positioning plate 8, and the positioning plate 8 is embedded in the inside of the sprue cup sand mold 1. After the resin sand is filled and hardened, the slag dam plate 6 is kept stable by the positioning plate 8.

[0033] Please refer to Figure 4 In the third embodiment, a slag filter screen 9 is arranged in the flow gap 7, which can further improve the effect of blocking the slag of the molten metal. Specifically, the lower end of the slag filter screen 9 is embedded in the bottom of the first runner 2, and the upper end of the slag filter screen 9 is inserted into the lower end of the slag dam plate 6. When the sand mold of the first runner 2 is formed, the lower end of the slag filter screen 9 is first embedded in the bottom of the first runner 2, and when the slag dam plate 6 is installed, the clamping groove at the lower end of the slag dam plate 6 is clamped on the upper end of the slag filter screen 9, which can effectively fix the slag filter screen 9 and avoid it from being washed away by the molten metal. The slag filter screen 9 is made of ceramic filter screen and has high fire resistance.

[0034] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pool-type gate, characterized by The application relates to a sprue cup sand mold (1) which is provided with a first pouring groove (2) and a second pouring groove (3) which are sequentially communicated at the upper end surface of the sprue cup sand mold (1), a straight sprue (4) which is communicated with the bottom surface of the second pouring groove (3) and extends to the lower end surface of the sprue cup sand mold (1), the cross section of the first pouring groove (2) is larger than that of the second pouring groove (3), the bottom surface of the first pouring groove (2) is lower than that of the second pouring groove (3), a dam structure (5) is formed at the bottom of the first pouring groove (2) and the second pouring groove (3), a slag baffle (6) is longitudinally arranged on one side of the first pouring groove (2) close to the second pouring groove (3), an overflow gap (7) is formed between the lower end of the slag baffle (6) and the bottom surface of the first pouring groove (2), and the upper end of the overflow gap (7) is lower than the upper end of the dam structure (5). The slag baffle (6) is embedded in the inside of the sprue cup sand mold (1). Positioning plates (8) are horizontally welded on the upper parts of the two sides of the slag baffle (6), and the positioning plates (8) are embedded in the inside of the sprue cup sand mold (1).

2. A tubular gate bush according to claim 1, wherein The cross sections of the first pouring groove (2) and the second pouring groove (3) decrease from top to bottom.

3. A tubular gate bush according to claim 1, wherein The cross section of the straight sprue (4) decreases from top to bottom.

4. A tubular gate bush according to claim 1, wherein The height of the dam structure (5) is greater than twice the height of the overflow gap (7).

5. A tubular gate bush according to claim 1, wherein The slag baffle (6) is made of ceramic material.

6. A tubular gate bush according to claim 1, wherein The inner walls of the first pouring groove (2) and the second pouring groove (3), the inner wall of the straight sprue (4) and the outer surface of the slag baffle (6) are provided with a refractory layer.

7. A tub-shaped gate cup according to any one of claims 1-6, characterized in that A slag baffle filter screen (9) is arranged in the overflow gap (7).

8. A tubular gate bush according to claim 7, wherein The lower end of the slag baffle filter screen (9) is embedded in the bottom of the first pouring groove (2), and the upper end of the slag baffle filter screen (9) is inserted into the lower end of the slag baffle (6).

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