Four-vortex molten iron sliding nozzle device for pig casting machine

Abstract

The utility model discloses a four-vortex molten iron sliding nozzle device for a pig-casting machine, and belongs to the technical field of pig-casting machine production and manufacturing. A four-vortex molten iron sliding nozzle device for a pig casting machine comprises a bottom plate, a connecting plate is installed at one end of the bottom plate, first side plates are arranged on the two sides of the bottom plate respectively, second side plates are arranged on the periphery of the connecting plate, a plurality of sliding nozzles are arranged on the surface of the connecting plate, fireproof plates are arranged between the first side plates and the bottom plate respectively, and the fireproof plates are connected with the bottom plate. A circulation channel is arranged between the pair of refractory plates, flow guide plate strips are installed on the surface of the connecting plate, and a plurality of flow dividing channels are arranged between the flow guide plate strips. According to the device, through the design of the spiral runner, the molten iron generates a vortex effect, the flow speed of the molten iron is remarkably increased, the conveying process of the molten iron is accelerated, the problems that the flow speed of the molten iron is low and the molten iron is easy to condense in a traditional device are solved, and the phenomena of narrowing of the runner and splashing of the molten iron caused by condensation of the molten iron are effectively prevented; and the occurrence risks of iron loss and safety accidents are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the production and manufacturing technical field of the cast iron machine, especially relates to four vortex iron runner device for cast iron machine. BACKGROUND

[0002] In the cast iron production process, the molten iron flows out from the blast furnace or smelting furnace, and needs to be guided to the cast iron mold through the runner device to complete the cast iron operation, however, the traditional cast iron machine runner device has many problems, which seriously affects the efficiency and quality of the cast iron operation.

[0003] The traditional runner device usually adopts the way of installing trapezoidal plates directly on the transition chute, so that the molten iron directly flows down from the inclined edge of the trapezoidal plate, this design leads to a wide molten iron flow channel and slow flow rate, and the molten iron is easy to condense in the flow process, thereby gradually narrowing the flow channel, when the molten iron reaches the inclined runner, the available runner area becomes smaller, forming pressure, causing the molten iron to splash out of the flow channel, not only increasing the risk of explosion, but also causing a large amount of iron loss;

[0004] In addition, the molten iron flowing gently onto the cast iron mold is often mixed with slag, which easily affects the surface quality of the pig iron, at the same time, the frequent splashing of the molten iron also causes the roller and connecting rod on the chain belt to stick and damage, increasing the maintenance cost and downtime of the equipment. SUMMARY

[0005] The utility model discloses a four vortex molten iron runner device for cast iron machine to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a four vortex molten iron runner device for cast iron machine, comprising a bottom plate, one end of the bottom plate is provided with a connecting plate, both sides of the bottom plate are respectively provided with a first side plate, the periphery of the connecting plate is provided with a second side plate, the second side plate is connected with the first side plate through a connecting piece, the surface of the connecting plate is provided with a plurality of runners, a plurality of spiral flow channels are respectively arranged in the runners, a pair of first side plates are respectively provided with a refractory plate between the bottom plate, a flow-through channel is arranged between a pair of refractory plates, a flow guide plate strip is installed on the surface of the connecting plate, a plurality of shunt channels are arranged between the flow guide plate strips, a plurality of annular flow holes are arranged on the flow guide plate strip and communicated with a plurality of shunt channels, and the annular flow holes correspond to the runners one by one.

[0007] By adopting the technical scheme, the combination of the bottom plate, the connecting plate, the first side plate and the second side plate forms a stable device main body structure, which provides reliable physical support and refractory protection for molten iron conveying. The spiral flow channel design in the spout can cause the molten iron to produce a vortex effect and accelerate the flow rate of the molten iron, thereby realizing rapid and uniform molten iron conveying, reducing the condensation tendency of the molten iron during conveying, reducing the risk of the flow channel being narrowed due to condensation, maintaining a stable molten iron passage, avoiding the problem of molten iron spilling due to the reduction of the spout area, improving operation safety and reducing iron loss. At the same time, the setting of the refractory plate and the flow passage enhances the refractory heat insulation performance of the device, reduces the thermal shock damage of high-temperature molten iron to the device, and the cooperation of the annular flow hole on the guide plate strip and the shunt passage can realize uniform shunting of the molten iron, ensure that the molten iron is stably and uniformly distributed to each spout, and further improve the cast iron operation efficiency and the cast quality, and reduce the risk of affecting the surface quality of the castings due to the inclusion of the molten iron.

[0008] Optionally, the connecting piece includes a mounting seat mounted on the outer sidewall of a pair of the first side plates, and the second side plate is connected with the mounting seat through a fixing bolt.

[0009] By adopting the technical scheme, the combination of the mounting seat and the fixing bolt firmly connects the second side plate with the first side plate, which significantly improves the mechanical strength and stability of the device as a whole, ensures that the device structure is still stable in a harsh cast iron environment with high temperature and high pressure, and facilitates disassembly and installation, thereby facilitating maintenance, repair or replacement of parts of the device, effectively reducing equipment downtime, and improving production efficiency.

[0010] Optionally, the spout includes a fixed seat and a cylindrical seat connected with the fixed seat, and the outer diameter of the fixed seat is greater than the outer diameter of the cylindrical seat.

[0011] By adopting the technical scheme, the combination of the fixed seat and the cylindrical seat enables the spout to have more reasonable stress distribution, enhances its compression resistance, impact resistance and wear resistance, and prolongs the service life of the spout. The structure feature that the outer diameter of the fixed seat is greater than the outer diameter of the cylindrical seat is beneficial to the smooth flow of the molten iron into the spout and the stable flow of the molten iron, reduces the degree of turbulence of the molten iron at the inlet of the spout, and reduces the possibility of splashing and leakage of the molten iron.

[0012] Optionally, the spiral flow channel is formed in the fixed seat and the cylindrical seat, and the spiral flow channel gradually decreases from the upper end of the fixed seat to the lower end of the cylindrical seat.

[0013] By adopting the technical scheme, with the gradual shrinkage of the spiral flow channel, the flow rate of the molten iron gradually increases in the flowing process, a vortex effect of accelerated flow is formed, the condensation time of the molten iron in the runner is further reduced, the blockage of the molten iron caused by condensation is effectively prevented, the smooth conveying of the molten iron is ensured, meanwhile, the molten iron maintains a suitable flow rate and temperature when entering the cast iron mold, which helps to improve the forming quality and surface finish of the castings.

[0014] Optionally, the pair of refractory plates are respectively arc-shaped, and the two ends of the flow guide plate strip are respectively connected with the end portions of the pair of refractory plates.

[0015] By adopting the technical scheme, the arc-shaped plate structure is more suitable for the internal space layout of the cast iron machine, the fireproof protection coverage range of the device is improved, the heat insulation effect of the molten iron conveying process is enhanced, the connection stability of the flow guide plate strip and the refractory plate is improved, the flow direction and stability of the molten iron in the distribution and conveying process are ensured, the splashing and leakage caused by flow deviation of the molten iron are avoided, and the safety of the production process and the stability of the quality of the castings are improved.

[0016] Optionally, the gap between the flow guide plate strip and the second side plate is filled with a refractory filler.

[0017] By adopting the technical scheme, the refractory filler enhances the fireproof and heat insulation performance of the device, effectively blocks the heat conduction of the high-temperature molten iron to the outside of the device, reduces the risk of thermal deformation and damage of the flow guide plate strip and the second side plate caused by high temperature, prolongs the service life of the components, and at the same time, to a certain extent, also plays a role in stabilizing the flow of the molten iron, reduces the fluctuation of the molten iron caused by thermal disturbance, and improves the stability of the molten iron conveying.

[0018] Optionally, a transition groove is arranged between the flow guide plate strip and the connecting plate, and the plurality of distribution channels are respectively in communication with the transition groove.

[0019] By adopting the technical scheme, a buffer and transition space is provided for the molten iron flowing from the flow guide plate strip to the distribution channels, the molten iron first enters the transition groove and then is evenly distributed to each runner through the distribution channels, such a design avoids the local wear and uneven flow rate caused by the direct impact of the molten iron on the inlet of the distribution channel, enables the molten iron flow to enter the distribution channel smoothly and uniformly, further improves the uniformity and stability of the molten iron distribution, and is beneficial to improving the quality consistency of the castings.

[0020] Optionally, the plurality of distribution channels gradually expand from the annular flow hole to the transition groove.

[0021] By adopting the technical scheme, with gradual expansion of the shunt passage, the flow rate of the molten iron gradually reduces after entering the shunt passage, the pressure is released gently, energy loss and vortex formation of the molten iron flow in the shunting process are reduced, the stability of the molten iron flow is ensured, problems such as splashing of the molten iron and scouring of the cast iron mold caused by sudden change of the flow rate are avoided, and the castings quality is improved and the equipment wear is reduced.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] 1. The device is designed through a spiral flow channel, so that the molten iron produces a vortex effect, significantly improves the flow rate of the molten iron, and accelerates the conveying process of the molten iron, which not only solves the problem of slow flow rate of the molten iron and easy condensation in the traditional device, but also effectively prevents the flow channel from being narrowed and the molten iron from splashing due to condensation of the molten iron, reduces the risk of iron loss and safety accidents.

[0024] 2. The annular flow holes on the guide plate strip cooperate with the shunt passage to ensure that the molten iron can be evenly distributed to each spout, and the uniform shunting mechanism helps to improve the quality and consistency of the castings and avoid casting defects caused by uneven distribution of the molten iron.

[0025] 3. The setting of the refractory plate and the flow passage, and the filling of the refractory filler between the guide plate strip and the second side plate, together enhance the refractory heat insulation performance of the device, effectively reduce the thermal shock damage of the high-temperature molten iron to the device, and prolong the service life of the device.

[0026] 4. The second side plate is firmly connected with the first side plate through the connecting mode of the mounting seat and the fixing bolt, the mechanical strength and stability of the whole device are improved, and the design ensures the reliable operation of the device in harsh environments such as high temperature and high pressure, reduces the maintenance cost and downtime of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the connection structure of the bottom plate and the connecting plate of the utility model;

[0029] Figure 3 It is a schematic diagram of the utility model Figure 2 It is a schematic diagram of the enlarged structure of A in the utility model;

[0030] Figure 4 It is a schematic diagram of the spout cross-section structure of the utility model.

[0031] In the figure: 1, the base plate; 2, connecting plate; 3, the first side plate; 4, the second side plate; 5, connecting piece; 51, mounting seat; 52, fixing bolt; 6, the mouth of the slide; 61, the fixed seat; 62, cylindrical seat; 7, spiral flow channel; 8, refractory plate; 9, flow channel; 10, guide plate; 1001, refractory filler; 1002, transition groove; 11, shunt channel; 12, annular flow hole. DETAILED DESCRIPTION

[0032] The technical scheme of the present application will be described clearly and completely below in conjunction with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0033] In the description of the present application, it should be noted that the terms "intermediate", "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] As Figure 1 The specific scheme of the embodiment is as follows: a four-vortex iron runner device for a cast iron machine, comprising a base plate 1, the base plate 1 serving as the basic support structure of the entire device, bearing and fixedly connecting a connecting plate 2, a first side plate 3 and other related components, providing stable bottom support for the device, ensuring the overall stability of the device during the casting process, ensuring that each component of the device can be closely matched, maintaining the normal operation of the device, providing a stable platform for the delivery and shunting of molten iron;

[0035] One end of the base plate 1 is provided with a connecting plate 2, which provides a channel for the shunting and delivery of molten iron, so that the runner 6 can be stably installed on the device, ensuring that the molten iron can accurately flow into the runner 6 and be delivered through the spiral flow channel 7, improving the stability and accuracy of the delivery of molten iron.

[0036] The two sides of the bottom plate 1 are respectively provided with first side plates 3, which enhance the overall structural strength of the device, prevent the device from being deformed or damaged due to lateral force during cast iron process, ensure the normal operation of the device, and are made of high-strength and high-temperature-resistant materials.

[0037] The second side plate 4 is connected with the first side plate 3 through the connecting piece 5, and the connecting piece 5 includes a mounting seat 51 mounted on the outer sidewall of a pair of first side plates 3, and the second side plate 4 is connected with the mounting seat 51 through a fixing bolt 52.

[0038] The surface of the connecting plate 2 is provided with a plurality of spout 6, the spout 6 includes a fixed seat 61, and a cylindrical seat 62 connected with the fixed seat 61, the outer diameter of the fixed seat 61 is greater than the outer diameter of the cylindrical seat 62, the spout 6 is used for guiding the molten iron to flow into the cast iron mold, the structure design of the fixed seat 61 and the cylindrical seat 62 makes it have good compression resistance, impact resistance and wear resistance, ensures that the molten iron can flow smoothly and stably into the cast iron mold, and accelerates the flow of molten iron through the spiral flow channel 7, reduces the risk of condensation, improves the quality and production efficiency of the castings, and can be provided with a wear-resistant coating or heat-resistant material on the inner wall of the spout 6, prolonging the service life of the spout 6, at the same time, the shape, size and position of the spout 6 can be adjusted according to the requirements of different cast iron molds;

[0039] A plurality of spout 6 is respectively provided with a spiral flow channel 7, the spiral flow channel 7 is opened in the fixed seat 61 and the cylindrical seat 62, and the spiral flow channel 7 gradually decreases from the upper end of the fixed seat 61 to the lower end of the cylindrical seat 62. The design of the spiral flow channel 7 makes the molten iron produce vortex effect during flow, accelerates the flow rate of the molten iron, reduces the condensation time of the molten iron during conveying, prevents the molten iron from being blocked, ensures the smooth conveying of the molten iron, and improves the forming quality and surface finish of the castings.

[0040] A pair of said first side plates 3 are respectively provided with fire-resistant plates 8 between the bottom plate 1, a pair of said fire-resistant plates 8 are respectively arc-shaped, and the fire-resistant plates 8 provide fire-resistant and heat-insulating protection for the delivery of molten iron, and form a flow channel 9 with another fire-resistant plate 8, effectively blocking the heat conduction of high-temperature molten iron to the bottom plate 1 and the first side plate 3, reducing the risk of thermal deformation of the device, prolonging the service life of the device, and the fire-resistant plates 8 can be ceramic fiber plates or high-alumina fire-resistant plates 8, improving the fire-resistant temperature and heat-insulating effect of the fire-resistant plates 8, and a pair of said fire-resistant plates 8 are provided with a flow channel 9 therebetween;

[0041] The surface of the connecting plate 2 is provided with a flow guide plate strip 10, which is used to guide the molten iron into the flow channel 11 and communicate with the runner 6 through the annular flow hole 12, realizing uniform distribution of the molten iron, ensuring that the molten iron can be evenly distributed to each runner 6, ensuring the consistency of the casting quality, while reducing the risk of splashing and leakage of the molten iron, both ends of the flow guide plate strip 10 are respectively connected with the end of a pair of said fire-resistant plates 8, and the gap between the flow guide plate strip 10 and the second side plate 4 is filled with a fire-resistant filler 1001, which effectively blocks the heat conduction of high-temperature molten iron to the outside of the device, reduces the risk of damage to the flow guide plate strip 10 and the second side plate 4 due to high temperature, and prolongs the service life of the device, and the flow guide plate strip 10 and the connecting plate 2 are provided with a transition groove 1002, which avoids direct impact of the molten iron on the inlet of the flow channel 11, reduces local wear and uneven flow problems, enables the molten iron flow to enter the flow channel 11 smoothly and uniformly, and improves the uniformity and stability of the molten iron distribution.

[0042] A plurality of flow channels 11 are provided between the flow guide plate strips 10, a plurality of said flow channels 11 are respectively communicated with the transition groove 1002, and a plurality of said flow channels 11 gradually expand from the annular flow hole 12 to the transition groove 1002. The flow channel 11 gradually reduces the flow rate of the molten iron after entering the flow channel 11, releases the pressure smoothly, reduces energy loss and vortex formation, ensures the stability of the molten iron flow, avoids splashing and scouring of the molten iron due to sudden change of flow rate, and the flow guide plate strip 10 is provided with a plurality of annular flow holes 12 communicated with a plurality of said flow channels 11, the annular flow hole 12 corresponds to the runner 6 one by one, and the annular flow hole 12 realizes precise distribution of the molten iron, ensures that each runner 6 can obtain uniform and stable supply of the molten iron, improves the quality and consistency of the casting.

[0043] The working steps of the above embodiment are as follows:

[0044] After the molten iron flows out of the blast furnace or smelting furnace, it first enters the flow channel 9 of the device, which provides a stable and fire-resistant initial inflow path for the molten iron, ensuring that the molten iron can smoothly enter the subsequent flow distribution system;

[0045] The molten iron flowing out from the flow channel 9 then enters the transition groove 1002 between the guide plate strip 10 and the connecting plate 2;

[0046] The molten iron buffered in the transition groove 1002 then flows into several sub-flow channels 11 between the guide plate strips 10, which are gradually enlarged by the annular flow holes 12 to the transition groove 1002, so that the flow rate of the molten iron gradually decreases after entering the sub-flow channels 11, the pressure is released gently, thereby reducing the energy loss and vortex formation of the molten iron flow during the sub-flow process, and ensuring the stability of the molten iron flow;

[0047] The molten iron passing through the sub-flow channels 11 finally passes through several annular flow holes 12 on the guide plate strip 10, and these annular flow holes 12 correspond to the runner 6 one by one;

[0048] After the molten iron passes through the annular flow hole 12, it enters the corresponding runner 6, and the spiral flow channel 7 in the runner 6 gradually decreases from the upper end of the fixed seat 61 to the lower end of the cylindrical seat 62, which is a unique design that makes the molten iron produce a vortex effect during the flow process, and the flow rate gradually increases;

[0049] Under the acceleration of the spiral flow channel 7, the molten iron flows into the cast iron mold at a suitable flow rate and temperature.

[0050] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A four-vortex iron runner device for a casting machine, characterized by, The utility model provides a kind of continuous casting machine, including bottom plate, one end of the bottom plate is equipped with connecting plate, both sides of the bottom plate are equipped with first side plate respectively, the periphery of the connecting plate is equipped with second side plate, the second side plate is connected with the first side plate by connecting piece, the surface of the connecting plate is equipped with several chute, several chute are equipped with spiral flow channel respectively, a pair of first side plate is equipped with refractory plate between the bottom plate respectively, flow-through passage is equipped between a pair of refractory plate, the surface of the connecting plate is equipped with guide vane, several shunt channels are equipped between the guide vane, the guide vane is equipped with several annular flow hole that communicate with several shunt channels, the annular flow hole and chute one to one correspondence.

2. The four-vortex iron runner device for a casting machine according to claim 1, characterized in that: The connecting piece includes a mounting seat mounted on the outer sidewall of a pair of first side plates, and the second side plates are connected with the mounting seats by fixing bolts.

3. The four-vortex iron runner device for a casting machine according to claim 1, characterized in that: The chute includes a fixing seat and a cylindrical seat connected with the fixing seat, and the outer diameter of the fixing seat is larger than the outer diameter of the cylindrical seat.

4. The four-vortex iron runner device for a casting machine according to claim 3, characterized in that: The spiral flow channel is formed in the fixing seat and the cylindrical seat, and the spiral flow channel gradually decreases from the upper end of the fixing seat to the lower end of the cylindrical seat.

5. The four-vortex iron runner device for a casting machine according to claim 1, characterized in that: A pair of refractory plates are arc-shaped, and both ends of the guide vane are connected with the end portions of a pair of refractory plates.

6. The four-vortex iron runner device for a casting machine according to claim 1, characterized in that: The gap between the guide vane and the second side plate is filled with refractory filler.

7. The four-vortex iron runner device for a casting machine according to claim 1, characterized in that: The guide vane and the connecting plate are provided with a transition groove, and several shunt channels are communicated with the transition groove respectively.

8. The four-vortex iron runner device for a casting machine according to claim 7, characterized in that: The shunt channels gradually expand from the annular flow hole to the transition groove.

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