Casting ladle structure for centrifugal casting pipe
By adopting a combined design of connecting rod lifting components and plug rods in the centrifugal casting tube casting package structure, the problem of difficult slag and flow control in the prior art is solved, and the effect of improving product quality and reducing temperature losses is achieved.
Patent Information
- Application Number
- CN202421638250.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-11
AI Technical Summary
In the existing centrifugal casting technology, the molten iron is prone to steel slag during the outflow process, which affects the product's qualification rate, and it is difficult to reliably control the molten iron flow rate at the outlet, resulting in a large loss of molten iron temperature.
A centrifugal casting tube casting package structure is designed, and the connecting rod lifting component outside the insulation package is combined with the plug rod to control the flow of molten iron at the outlet to ensure that molten iron flows out of non-surface positions and avoid steel slag outflow.
It effectively reduces the steel slag on the surface of the molten iron during the pouring process, improves product quality, realizes reliable control of the molten iron flow rate at the outlet, and reduces the molten iron temperature loss.
Smart Images
Figure CN222902596U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipe casting, and more specifically, it relates to a pouring ladle structure for centrifugal cast pipes. Background Art
[0002] Currently, when casting pipe fittings such as ductile iron pipes, a sector ladle is mainly used for centrifugal pouring. Its working principle is to clamp the molten iron ladle on a rotating device, and the molten iron in the ladle is made to flow into the appropriate position for casting operations by rotating the molten iron ladle. However, the molten iron in the ladle flows out from the upper part of the ladle, and during the outflow process, the steel slag on the surface of the molten iron is easily carried out, resulting in the molten iron for pouring being prone to carry steel slag, which directly affects the qualification rate of the product.
[0003] In the prior art, there is a technology with the name of "a pouring machine for a centrifugal pipe casting machine" and a publication number of "110560654A". This technology relates to a pouring machine for a centrifugal pipe casting machine and belongs to the field of mechanical equipment. The present invention includes an electric tilting ladle device, a split trolley, and a chute assembly. The electric tilting ladle device includes an electric tilting ladle frame, a ladle, and a ladle driving mechanism. The split trolley is installed on the electric tilting ladle frame. The ladle is rotatably installed on the electric tilting ladle frame. The ladle is connected to the ladle driving mechanism. The chute assembly is installed on the split trolley and the chute assembly cooperates with the ladle. The ladle in the electric tilting ladle device rotates to pour the molten iron in the ladle into the chute assembly installed on the split trolley. While one chute assembly is in the process of pouring, the other chute assembly pours the molten iron remaining in the chute to achieve a cleaning function.
[0004] However, this technology does not address the technical problems and technical solutions of the present application. Content of the Utility Model
[0005] The technical problem to be solved by the utility model is: in view of the deficiencies of the prior art, to provide a pouring ladle structure for centrifugal cast pipes that can reduce the steel slag on the surface of the molten iron during the pouring process, improve the product quality, reliably control the flow rate of the molten iron at the water outlet, and reduce the temperature loss of the molten iron.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is as follows:
[0007] The utility model is a pouring ladle structure for centrifugal cast pipes. A connecting rod lifting component is arranged outside the heat preservation ladle. The connecting rod lifting component is connected to the upper end of a plug rod. The plug rod extends into the heat preservation ladle. The lower end of the plug rod is aligned with the water outlet on the heat preservation ladle. The water outlet is communicated with a chute. A ladle cover is arranged on the heat preservation ladle.
[0008] The heat preservation ladle includes a heat preservation ladle side part and a heat preservation ladle bottom part. The connecting rod lifting component is connected to the outside of the heat preservation ladle side part. The water outlet is arranged at the heat preservation ladle bottom part.
[0009] The described heat preservation bag includes the side part of the heat preservation bag, the bottom part of the heat preservation bag, and the folded edge part of the heat preservation bag. The lower end of the side part of the heat preservation bag is connected to the bottom part of the heat preservation bag, and the upper end of the side part of the heat preservation bag is connected to the folded edge part of the heat preservation bag. The water outlet is arranged on the folded edge part of the heat preservation bag, and the connecting rod lifting component is connected to the outside of the folded edge part of the heat preservation bag.
[0010] An electromagnetic induction coil is arranged on the outer ring of the side part of the described heat preservation bag.
[0011] A nitrogen pressurizing component is arranged on the upper part of the described heat preservation bag, and a nitrogen inlet is arranged on the nitrogen pressurizing component.
[0012] The described nitrogen pressurizing component is of an inverted U-shaped structure, and the nitrogen pressurizing component extends to a position below the surface of the pouring liquid inside the heat preservation bag.
[0013] The receiving port of the described chute is located below the water outlet.
[0014] Refractory bricks are arranged on the inner bottom surface of the described chute.
[0015] The described connecting rod lifting component is a telescopic cylinder or an electric telescopic rod.
[0016] Adopting the technical solution of the present utility model, the working principle and beneficial effects are as described below:
[0017] The structure of the pouring ladle for centrifugal cast pipes described in the present utility model is as follows: When the structure is set up, a heat-insulating ladle is provided. Molten iron for pouring is contained in the heat-insulating ladle. A connecting rod lifting component is arranged outside the heat-insulating ladle. The connecting rod lifting component is connected to the upper end of the plug rod. The plug rod extends into the heat-insulating ladle, and the lower end of the plug rod is aligned with the water outlet on the heat-insulating ladle. By controlling the component to control the telescopic movement of the connecting rod lifting component, the connecting rod lifting component drives the plug rod to lift and lower in the heat-insulating ladle. When the plug rod descends to the lowest position, the plug rod blocks the water outlet. When the plug rod rises, the plug rod leaves the water outlet, and the molten iron can flow out from the water outlet. The water outlet is connected to a chute, and the chute is used to convey the molten iron, so that the molten iron flows to the position of the casting mold along the extending direction of the chute. A ladle cover is arranged on the heat-insulating ladle, and the ladle cover is used to seal the heat-insulating ladle from above to play a heat-insulating role. The connecting rod lifting system is controlled by the control component to rise and fall. The plug rod is connected to the connecting rod lifting system, and the connecting rod lifting system drives the plug rod to lift and lower. The ladle cover is placed above the heat-insulating ladle to reduce the dissipation of the heat of the molten iron in the heat-insulating ladle. The main function of the heat-insulating ladle is to be a container for molten iron and can supplement molten iron. The water outlet is on the heat-insulating ladle. It can be arranged at the bottom of the heat-insulating ladle, which is a bottom leakage type, or can be arranged in the middle part of the side of the heat-insulating ladle, which is a pneumatic heat-insulating type or a non-pneumatic heat-insulating type. By controlling the lifting of the plug rod, the flow rate of the molten iron at the water outlet is controlled, so that the pouring speed is determined by the opening size of the plug rod. The chute is a component that controls the molten iron to flow into the centrifuge tube mold after the molten iron flows out. The above structure realizes the outflow of the molten iron from a non-surface position of the heat-insulating ladle, rather than flowing out from the surface position. The steel slag on the surface of the molten iron will not flow out from the water outlet, thereby effectively removing the steel slag in the molten iron and avoiding the steel slag from entering the mold, thus improving the quality of the molten iron. Moreover, through the control of the plug rod, the flow rate of the molten iron can be reliably controlled to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The following briefly describes the content expressed in each drawing of this specification and the marks in the drawings:
[0019] Figure 1 FIG. 9 is a schematic structural diagram of Embodiment 1 (bottom leakage type) of the structure of the pouring ladle for centrifugal cast pipes described in the present utility model;
[0020] Figure 2 FIG. 13 is a schematic structural diagram of Embodiment 2 (pneumatic heat-insulating type) of the structure of the pouring ladle for centrifugal cast pipes described in the present utility model;
[0021] Figure 3 FIG. 17 is a schematic structural diagram of Embodiment 3 (non-pneumatic heat-insulating type) of the structure of the pouring ladle for centrifugal cast pipes described in the present utility model;
[0022] Figure 4 FIG. 21 is a schematic structural diagram of the chute of the structure of the pouring ladle for centrifugal cast pipes described in the present utility model;
[0023] The labels in the attached drawings are respectively: 1. connecting rod lifting component; 2. plunger rod; 3. cover; 4. heat preservation bag; 5. water outlet; 6. chute; 7. nitrogen pressurizing component; 8. electromagnetic induction coil; 9. side part of heat preservation bag; 10. bottom part of heat preservation bag; 11. folded edge part of heat preservation bag; 12. nitrogen inlet; 13. receiving port; 14. refractory brick. Specific embodiments
[0024] The following further details the specific embodiments of the present utility model, such as the shapes, structures of the various components involved, the mutual positions and connection relationships between the various parts, the functions of the various parts, and the working principles, etc., by describing the embodiments with reference to the attached drawings:
[0025] As shown in the attached Figure 1 - attached Figure 4As shown in the figure, the utility model relates to a pouring ladle structure for centrifugal casting pipes. A connecting rod lifting component 1 is arranged outside the heat preservation ladle 4. The connecting rod lifting component 1 is connected to the upper end of the plug rod 2. The plug rod 2 extends into the heat preservation ladle 4. The lower end of the plug rod 2 is aligned with the water outlet 5 on the heat preservation ladle 4. The water outlet 5 is communicated with the chute 6. A ladle cover 3 is arranged on the heat preservation ladle 4. The above structure proposes an improved technical solution for the deficiencies in the prior art. When setting up the structure, a heat preservation ladle 4 is provided. Molten iron for pouring is contained in the heat preservation ladle 4. A connecting rod lifting component 1 is arranged outside the heat preservation ladle 4. The connecting rod lifting component 1 is connected to the upper end of the plug rod 2. The plug rod 2 extends into the heat preservation ladle 4. The lower end of the plug rod 2 is aligned with the water outlet 5 on the heat preservation ladle 4. By controlling the component to control the telescopic movement of the connecting rod lifting component, the connecting rod lifting component drives the plug rod 2 to lift and lower in the heat preservation ladle 4. When the plug rod 2 descends to the lowest position, the plug rod 2 blocks the water outlet 5. When the plug rod 2 rises, the plug rod 2 leaves the water outlet 5, and the molten iron can flow out from the water outlet 5. The water outlet 5 is communicated with the chute 6. The chute 6 is used to convey the molten iron, so that the molten iron flows to the position of the casting mold along the extending direction of the chute 6. A ladle cover 3 is arranged on the heat preservation ladle 4. The ladle cover is used to seal the heat preservation ladle from above to play a heat preservation role. The connecting rod lifting system 1 is controlled by the control component to rise and fall. The plug rod 2 is connected to the connecting rod lifting system 1, and the connecting rod lifting system drives the plug rod 2 to lift and lower. The ladle cover 3 is placed above the heat preservation ladle 4 to reduce the dissipation of the heat of the molten iron in the heat preservation ladle 4. The main function of the heat preservation ladle 4 is to be a container for molten iron and can supplement molten iron. The water outlet 5 is on the heat preservation ladle. It can be arranged at the bottom of the heat preservation ladle 4, which is a bottom leakage type, or can be arranged at the middle part on the side of the heat preservation ladle 4, which is a pneumatic heat preservation type or a non-pneumatic heat preservation type. The flow rate of the molten iron at the water outlet 5 is controlled by the lifting and lowering of the plug rod 2, so that the pouring speed is determined by the opening size of the plug rod 2. The chute 6 is a component that controls the molten iron to flow into the centrifuge pipe mold (mold) after the molten iron flows out. The above structure enables the molten iron to flow out from a non-surface position (bottom position or near the middle position) of the heat preservation ladle, rather than flowing out from the surface position, and the steel slag on the surface of the molten iron will not flow out from the water outlet, thereby effectively removing the steel slag in the molten iron and preventing the steel slag from entering the mold, thus improving the quality of the molten iron. Moreover, through the control of the plug rod, the flow rate of the molten iron can be reliably controlled to meet the use requirements. The pouring ladle structure for centrifugal casting pipes described in the utility model can reduce the steel slag on the surface of the molten iron during the pouring process, improve the product quality, reliably control the flow rate of the molten iron at the water outlet, and reduce the temperature loss of the molten iron.
[0026] The heat preservation ladle 4 described above includes a heat preservation ladle side part 9 and a heat preservation ladle bottom part 10. The connecting rod lifting component 1 is connected to the outside of the heat preservation ladle side part 9. The water outlet 5 is arranged at the heat preservation ladle bottom part 10. The above structure forms a bottom leakage type pouring ladle structure for centrifugal casting pipes, which can continuously add molten iron into the heat preservation ladle, and the water outlet 5 can continuously discharge water, realizing the continuous supply of molten iron for pouring.
[0027] The described heat-insulating ladle 4 includes a side part 9 of the heat-insulating ladle, a bottom part 10 of the heat-insulating ladle, and a folded edge part 11 of the heat-insulating ladle. The lower end of the side part 9 of the heat-insulating ladle is connected to the bottom part 10 of the heat-insulating ladle, and the upper end of the side part 9 of the heat-insulating ladle is connected to the folded edge part 11 of the heat-insulating ladle. The water outlet 5 is arranged on the folded edge part 11 of the heat-insulating ladle, and the connecting rod lifting component 1 is connected to the outside of the folded edge part 11 of the heat-insulating ladle. In the above structure, the water outlet is arranged at the middle position of the heat-insulating ladle, which is convenient for arranging the electromagnetic induction coil 8 at the lower part to form a centrifugal casting ladle structure with air pressure heat preservation. Without arranging the electromagnetic induction coil 8, it is a non-air pressure heat preservation structure.
[0028] An electromagnetic induction coil 8 is arranged on the outer ring of the described side part 9 of the heat-insulating ladle. In the above structure, the electromagnetic induction coil 8 is arranged along the circumference of the heat-insulating ladle for heating the heat-insulating ladle to form a heat preservation structure.
[0029] A nitrogen pressurizing component 7 is arranged at the upper part of the heat-insulating ladle 4, and a nitrogen inlet 12 is arranged on the nitrogen pressurizing component 7. The described nitrogen pressurizing component 7 is of an inverted U-shaped structure, and the nitrogen pressurizing component 7 extends to a position below the surface of the pouring liquid in the heat-insulating ladle 4. In the above structure, the nitrogen pressurizing component 7 divides the heat-insulating ladle into an internal cavity 15 and a pouring trough 16. Compressed gas can be introduced through the nitrogen inlet 12 to apply pressure to the molten iron in the internal cavity, so that the molten iron is pressed into the pouring trough by the pressure, and the molten iron flows out from the water outlet on the folded edge part 11 of the heat-insulating ladle to supply the pouring mold.
[0030] The receiving port 13 of the described chute 6 is located below the water outlet 5. In the above structure, the molten iron flowing out from the water outlet enters the chute through the receiving port 13 and then flows to the pipe fitting forming mold.
[0031] Refractory bricks 14 are arranged on the inner bottom surface of the described chute 6. In the above structure, when the refractory bricks are severely eroded, new refractory bricks can be directly used for replacement. The material of the refractory bricks can be high-aluminum bricks, silicon carbide bricks, silicon-mullite bricks, dolomite bricks, magnesia-chrome bricks, etc., effectively improving the service life.
[0032] The described connecting rod lifting component 1 is a telescopic cylinder or an electric telescopic rod. In the above structure, the connecting rod lifting component 1 can be selected with different principles as long as it can realize the lifting function.
[0033] The centrifugal casting ladle structure described in the present utility model can control the temperature loss and spheroidization recession within a relatively narrow allowable range. In order to effectively control the heat loss and spheroidization recession, new molten iron is added every 7 - 10 minutes. The heat-insulating ladle can move horizontally. According to the production line design requirements, the entire heat-insulating ladle is installed on a horizontal walking mechanism, and the movement of the heat-insulating ladle is controlled by a variable frequency motor drive system. One heat-insulating ladle can simultaneously meet the pouring requirements of multiple workstations.
[0034] The centrifugal casting pipe pouring bag structure described in the utility model is provided with an insulation bag 4 when the structure is set, and molten iron for pouring is contained in the insulation bag 4. A connecting rod lifting component 1 is provided outside the insulation bag 4, and the connecting rod lifting component 1 is connected to the upper end of the plug rod 2, and the plug rod 2 extends into the insulation bag 4, and the lower end of the plug rod 2 is aligned with the water outlet 5 on the insulation bag 4. The connecting rod lifting component is controlled to extend and retract by a control component, and the connecting rod lifting component drives the plug rod 2 to rise and fall in the insulation bag 4. When the plug rod 2 drops to the lowest position, the plug rod 2 blocks the water outlet 5. When the plug rod 2 rises, the plug rod 2 leaves the water outlet 5, and the water outlet 5 can flow out the molten iron. The water outlet 5 is connected to a chute 6, and the chute 6 is used to transport the molten iron, so that the molten iron flows to the casting mold position along the direction in which the chute 6 extends. A bag cover 3 is provided on the insulation bag 4, and the bag cover is used to close the insulation bag from above to play a role of heat preservation. The connecting rod lifting system 1 controls its rise and fall through the control component, the plug rod 2 is connected to the connecting rod lifting system 1, and the plug rod 2 is driven by the connecting rod lifting system to rise and fall; the bag cover 3 is placed above the insulation bag 4 to reduce the heat dissipation of the molten iron in the insulation bag 4; the insulation bag 4 mainly functions as a container for molten iron, and can replenish molten iron; the water outlet 5 is on the insulation bag, which can be set at the bottom of the insulation bag 4, which is a bottom leakage type, or can be set in the middle part of the side of the insulation bag 4, which is an air pressure insulation type or a non-air pressure insulation type. The flow rate of the molten iron at the water outlet 5 is controlled by the lifting of the plug rod 2, so that the speed of the casting is determined by the size of the opening of the plug rod 2; the flow trough 6 is a component that controls the molten iron to flow into the inside of the centrifuge tube mold (mold) after the molten iron flows out. The above structure enables the molten iron to flow out from the non-surface position (bottom position or near the middle position) of the insulation bag instead of the surface position, and the slag on the surface of the molten iron will not flow out from the outlet, thereby effectively removing the slag in the molten iron and preventing the slag from entering the mold, thereby improving the quality of the molten iron. Moreover, by controlling the plug rod, the flow rate of the molten iron can be reliably controlled to meet the use requirements.
[0035] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A centrifugal casting tube pouring ladle structure, characterized in that: A connecting rod lifting component (1) is arranged outside the insulation bag (4), the connecting rod lifting component (1) is connected to the upper end of the plug rod (2), the plug rod (2) extends into the insulation bag (4), the lower end of the plug rod (2) is aligned with the water outlet (5) on the insulation bag (4), the water outlet (5) is connected to the chute (6), and a bag cover (3) is arranged on the insulation bag (4).
2. The centrifugal casting tube pouring ladle structure according to claim 1, characterized in that: The insulation bag (4) comprises an insulation bag side portion (9) and an insulation bag bottom portion (10), the connecting rod lifting component (1) is connected to the outside of the insulation bag side portion (9), and the water outlet (5) is arranged on the insulation bag bottom portion (10).
3. The centrifugal casting tube pouring ladle structure according to claim 1, characterized in that: The insulation bag (4) comprises an insulation bag side portion (9), an insulation bag bottom portion (10), and an insulation bag folded edge portion (11); the lower end of the insulation bag side portion (9) is connected to the insulation bag bottom portion (10); the upper end of the insulation bag side portion (9) is connected to the insulation bag folded edge portion (11); the water outlet (5) is arranged on the insulation bag folded edge portion (11); and the connecting rod lifting component (1) is connected to the outside of the insulation bag folded edge portion (11).
4. The centrifugal casting tube pouring ladle structure according to claim 3 is characterized in that: An electromagnetic induction coil (8) is arranged on the outer ring of the side portion (9) of the heat preservation bag.
5. The centrifugal casting tube pouring ladle structure according to claim 4, characterized in that: A nitrogen pressurizing component (7) is arranged on the upper part of the heat preservation bag (4), and a nitrogen adding port (12) is arranged on the nitrogen pressurizing component (7).
6. The centrifugal casting tube pouring ladle structure according to claim 5, characterized in that: The nitrogen pressurizing component (7) is an inverted U-shaped structure, and the nitrogen pressurizing component (7) extends to the lower part of the surface of the casting liquid in the insulation bag (4).
7. The centrifugal casting tube pouring ladle structure according to claim 2 or 3, characterized in that: The receiving interface (13) of the chute (6) is located below the water outlet (5).
8. The centrifugal casting tube pouring ladle structure according to claim 2 or 3, characterized in that: The inner bottom surface of the chute (6) is provided with refractory bricks (14).
9. The centrifugal casting tube pouring ladle structure according to claim 2 or 3, characterized in that: The connecting rod lifting component (1) is a telescopic cylinder or an electric telescopic rod.