A quenching device for ADI ductile cast iron

Abstract

This utility model discloses a quenching device for ADI ductile iron, relating to the field of ADI ductile iron technology. It includes a quenching tank, characterized in that: a water leakage pipe is connected to the lower end of the quenching tank, and a water pump is installed on the water leakage pipe; a three-way valve is connected to the other end of the water leakage pipe; two water injection pipes are connected to the other two ends of the three-way valve; the other ends of each water injection pipe are connected to the upper part of the quenching tank; a heater and a cooler are respectively installed on the water injection pipes; a filter screen is installed at the connection between the water leakage pipe and the quenching tank; an electric push rod is installed inside the quenching tank; a cleaning pipe is fixedly connected to the telescopic end of the electric push rod, and the opening of the cleaning pipe corresponds to the filter screen; a cleaning pump is connected to the other end of the cleaning pipe. The beneficial effects of this utility model are: this structure facilitates the control of the quenching tank temperature, facilitates the filtration and cleaning of impurities in the quenching tank, makes the temperature of the liquid inside more uniform, and makes quenching more convenient.

Description

Technical Field

[0001] This utility model relates to the field of ADI ductile iron technology, and in particular to a quenching device for ADI ductile iron. Background Technology

[0002] ADI (Austenitizing Dimer) is a ductile iron material formed through austenitization and isothermal quenching. Its matrix consists of bainite, retained austenite, and acicular ferrite, exhibiting high strength, wear resistance, and shock absorption. Its specific gravity is approximately 10% lower than steel, resulting in significant cost-effectiveness, and it is widely used to replace steel and aluminum components. In ductile iron production, strength adjustment requires quenching. However, traditional quenching equipment often leaves residues such as oxide scale and metal shavings after use; some equipment struggles to filter these residues, while others, though easy to filter, are difficult to clean. Furthermore, traditional equipment suffers from difficulties in controlling the quenching fluid temperature and uneven temperature distribution, severely impacting the quenching effect. Therefore, this paper provides a quenching device for ADI ductile iron to solve these problems. Utility Model Content

[0003] The technical problem this invention aims to solve is to address the aforementioned technical deficiencies by providing a quenching device for ADI ductile iron. This structure facilitates temperature control of the quenching tank, facilitates filtration and cleaning of impurities within the quenching tank, ensures more uniform temperature of the liquid within, and makes quenching more convenient.

[0004] The technical solution adopted by this utility model is as follows: a quenching device for ADI ductile iron is provided, including a quenching tank, characterized in that: a water leakage pipe is connected to the lower end of the quenching tank, and a water pump is installed on the water leakage pipe; a three-way valve is connected to the other end of the water leakage pipe; two water injection pipes are connected to the other two ends of the three-way valve; the other ends of the water injection pipes are connected to the upper part of the quenching tank; a heater and a cooler are respectively installed on the water injection pipes; a filter screen is installed at the connection between the water leakage pipe and the quenching tank; an electric push rod is installed inside the quenching tank; a cleaning pipe is fixedly connected to the telescopic end of the electric push rod, and the opening of the cleaning pipe corresponds to the filter screen; a cleaning pump is connected to the other end of the cleaning pipe.

[0005] To further optimize this technical solution, a quenching device for ADI ductile iron is provided with motors at both ends of the quenching pool; an agitator is installed at the output end of the motor and the agitator is located inside the quenching pool.

[0006] To further optimize this technical solution, the stirring paddle of a quenching device for ADI ductile iron rotates in different directions; the water leakage pipe is located on the left and right sides of the lower end of the quenching pool; two inclined water injection heads are respectively set at the left and right ends of the upper part of the quenching pool; the water injection pipe is connected to the corresponding water injection head.

[0007] To further optimize this technical solution, a stirring paddle for a quenching device for ADI ductile iron is located between the water injection head and the filter screen.

[0008] To further optimize this technical solution, a three-way valve for a quenching device for ADI ductile iron is an electric three-way valve.

[0009] Compared with the traditional quenching device for ADI ductile iron, the advantages of this invention are as follows:

[0010] 1. The installation of quenching tank, water pump, drain pipe, three-way valve, heater and cooler facilitates the control of the temperature of the quenching tank and ensures that the liquid temperature in the tank is uniform and stable within the process requirements range throughout the quenching process.

[0011] 2. The setup of the filter screen, electric push rod, cleaning pump, and filter tube ensures that impurities on the filter screen are cleaned, facilitating the filtration of liquid in the quenching tank. The filter screen can be cleaned without stopping the machine.

[0012] 3. The motor and agitator create a strong countercurrent in the quenching tank, ensuring uniform mixing of the liquid. At the same time, the bottom-drawing and top-pouring circulation path makes the temperature of the liquid more uniform and facilitates circulating liquid quenching. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a partial structural schematic diagram of the present invention;

[0015] Figure 3 This is a schematic diagram showing partial structural changes of the present invention;

[0016] In the diagram, 1. Quenching tank; 2. Leakage pipe; 3. Water pump; 4. Three-way valve; 5. Water injection pipe; 6. Heater; 7. Cooler; 8. Filter screen; 9. Electric push rod; 10. Filter cleaning pipe; 11. Motor; 12. Agitator; 13. Water injection head; 14. Cleaning pump. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-3As shown, a quenching device for ADI ductile iron includes a quenching tank 1, characterized in that: a water leakage pipe 2 is connected to the lower end of the quenching tank 1, and a water pump 3 is installed on the water leakage pipe 2; a three-way valve 4 is connected to the other end of the water leakage pipe 2; two water injection pipes 5 are connected to the other two ends of the three-way valve 4; the other ends of the water injection pipes 5 are connected to the upper part of the quenching tank 1; a heater 6 and a cooler 7 are respectively installed on the water injection pipes 5; a filter screen 8 is installed at the connection between the water leakage pipe 2 and the quenching tank 1; an electric push rod 9 is installed inside the quenching tank 1; and a cleaning filter pipe 10 is fixedly connected to the telescopic end of the electric push rod 9. The opening of the cleaning pipe 10 corresponds to the filter screen 8; the other end of the cleaning pipe 10 is connected to the cleaning pump 14; motors 11 are installed at both ends of the quenching pool 1; a stirring paddle 12 is installed at the output end of the motor 11, and the stirring paddle 12 is located inside the quenching pool 1; the stirring paddle 12 rotates in different directions; the drain pipe 2 is located on the left and right sides of the lower end of the quenching pool 1; two inclined water injection heads 13 are respectively installed at the left and right ends of the upper part of the quenching pool 1; the water injection pipe 5 is connected to the corresponding water injection head 13; the stirring paddle 12 is located between the water injection head 13 and the filter screen 8; the three-way valve 4 is an electric three-way valve 4.

[0019] During use, the ADI ductile iron to be quenched is placed in the quenching tank 1 for quenching. During quenching, the water pump 3 pumps water into the quenching tank 1 through the drain pipe 2. The water enters one of the water injection pipes 5 through the three-way valve 4 and then circulates back into the quenching tank 1 to complete the water circulation. When the liquid temperature in the quenching tank 1 is lower than the set isothermal range, the heater 6 is activated to heat up the circulating liquid. When the workpiece releases residual heat and causes the liquid temperature to exceed the set range, the cooler 7 is activated to force the circulating liquid to cool down, ensuring that the liquid temperature in the tank is uniform and stable within the process requirements range throughout the quenching process.

[0020] The filter screen 8 can intercept impurities in the quenching tank 1 in real time, such as oxide scale, metal shavings and other residues, to prevent impurities from adhering to the workpiece surface or clogging the pipeline with the liquid circulation. When impurities accumulate on the surface of the filter screen 8, the electric push rod 9 and the cleaning pump 14 are turned on. The cleaning pump 14 generates negative pressure through the cleaning pipe 10 to adsorb and clean the surface of the filter screen 8. At the same time, the electric push rod 9 drives the cleaning pipe 10 to move back and forth across the entire filter screen 8, thereby adsorbing the entire surface of the filter screen 8 and cleaning the impurities on the filter screen 8. This facilitates the filtration of the liquid in the quenching tank 1. The filter screen 8 can be cleaned without stopping the machine, which not only ensures the continuity of quenching liquid filtration, but also removes impurities in time to prevent the filter screen 8 from clogging, effectively reducing the frequency of equipment maintenance and extending the service life of the filter screen 8.

[0021] The two motors 11 drive the stirring paddles 12 in different directions. The stirring paddles 12 driven by the two motors 11 adopt a counter-rotating design, such as clockwise on the left and counterclockwise on the right. When running, they can form a strong counter-current in the quenching tank 1, which forces the liquid in the tank to roll and mix fully, and better stir the quenching tank 1, making the liquid in the tank evenly mixed. At the same time, the filter pipes are symmetrically arranged on the left and right sides of the lower end of the quenching tank 1. Together with the water injection heads 13 set at the upper end of the tank, they form a circulation path of bottom pumping and top injection, making the temperature of the liquid in the tank more uniform and facilitating the circulating liquid quenching treatment.

[0022] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A quenching apparatus for ADI ductile iron, comprising a quenching tank (1), characterized in that: The lower end of the quenching pool (1) is connected to a drain pipe (2), and a water pump (3) is installed on the drain pipe (2); the other end of the drain pipe (2) is connected to a three-way valve (4); the other two ends of the three-way valve (4) are connected to two water injection pipes (5); the other ends of the water injection pipes (5) are connected to the upper part of the quenching pool (1); a heater (6) and a cooler (7) are respectively installed on the water injection pipes (5); a filter screen (8) is installed at the connection between the drain pipe (2) and the quenching pool (1); an electric push rod (9) is installed in the quenching pool (1); a cleaning pipe (10) is fixedly connected to the telescopic end of the electric push rod (9), and the opening of the cleaning pipe (10) corresponds to the filter screen (8); the other end of the cleaning pipe (10) is connected to a cleaning pump (14).

2. The quenching apparatus for ADI ductile cast iron according to claim 1, wherein: Motors (11) are installed at both ends of the quenching pool (1); a stirring paddle (12) is installed at the output end of the motor (11), and the stirring paddle (12) is located inside the quenching pool (1).

3. The quenching apparatus for ADI nodular iron according to claim 2, wherein: The stirring paddle (12) rotates in different directions; the water pipe (2) is located on the left and right sides of the lower end of the quenching pool (1); two inclined water injection heads (13) are respectively set at the left and right ends of the upper part of the quenching pool (1); the water injection pipe (5) is connected to the corresponding water injection head (13).

4. The quenching apparatus for ADI nodular iron according to claim 3, wherein: The agitator (12) is located between the water injection head (13) and the filter screen (8).

5. The quenching apparatus for ADI nodular iron according to claim 1, wherein: The three-way valve (4) is an electric three-way valve (4).

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