A cold core box core making purification gas pipeline

Abstract

The utility model discloses a cold core box core making purification gas pipeline, comprising a transverse pipe, a dehumidification pipe is fixedly installed on the transverse pipe, and a compressed gas connecting pipe is fixedly installed at one end of the transverse pipe, and a cold core box connecting pipe is fixedly installed at the other end of the transverse pipe, and the cold core box connecting pipe and the compressed gas connecting pipe end are both installed with connecting flanges, the compressed gas connecting pipe end is connected to an external compressed gas tank, and the cold core box connecting pipe end is connected to an external cold core box; a heating core strip is fixedly installed in a drying area opened inside the dehumidification pipe. In the cold core box core making purification gas pipeline, compressed gas contacts with a spirally arranged high-temperature heating core strip, and the moisture in the compressed gas can be dried by the high-temperature heating core strip, so that the compressed gas does not contain water vapor, and it is avoided that the water vapor reacts with the resin component in the sand core to reduce the hardness of the sand core product, thereby improving the molding quality of the sand core product.

Description

Technical Field

[0001] The utility model relates to the field of cold core boxes, in particular to a cold core box core making purification gas pipeline. Background Art

[0002] The cold core box production process is to mix the phenolic resin of one component and the polyisocyanate of the second component with the dry blend in a certain proportion and inject the mixture into the core box, and then blow the catalyst such as TEA triethylamine and DMEA dimethylethylamine into the sand core after gasification. The first component and the second component undergo a polymerization reaction through catalysis to generate urethane (amino formic acid resin), which is then hardened. This reaction process can be completed instantly.

[0003] In cold core box core making, after blowing amine to harden the sand core, gas (dry compressed air, nitrogen or carbon dioxide) is needed to wash and purify the sand core to blow away the residual amine in the sand core. Now in the washing and purifying gas blowing pipeline: when using compressed air to wash and purify the cold core box, the compressed air containing moisture will react with the resin component in the sand core to reduce the hardness of the sand core product, thereby reducing the molding quality of the sand core product. Utility Model Content

[0004] The utility model aims to provide a cold box core making purification gas pipeline to solve the defects mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, a cold core box core making purification gas pipeline is provided, including a transverse tube, a desiccant tube is fixedly installed on the transverse tube, and a compressed gas connecting tube is fixedly installed on one end of the transverse tube, and a cold core box connecting tube is fixedly installed on the other end of the transverse tube, and connecting flanges are installed on the ends of the cold core box connecting tube and the compressed gas connecting tube, the end of the compressed gas connecting tube is connected to an external compressed gas tank, and the end of the cold core box connecting tube is connected to an external cold core box; a heating core strip is fixedly installed in a dry area opened inside the desiccant tube, and a sealing cover is screwed and fixed on the outside of the desiccant tube.

[0006] Preferably, the compressed gas connecting pipe, the transverse pipe and the cold box connecting pipe are combined together into a "U" shape, and the compressed gas connecting pipe and the cold box connecting pipe are arranged horizontally.

[0007] Preferably, a receiving opening is provided on the surface of the desiccant pipe, and the receiving opening is adapted to the size of the sealing cover, and the sealing cover covers the outside of the receiving opening and is screwed and fixed by four sets of fixing bolts.

[0008] Preferably, the cross-section of the sealing cover is "C"-shaped, and the length of the sealing cover is greater than the length of the heating core strip. At the same time, the sealing cover and the receiving port are sealed by a bottom sealing strip and a side sealing strip.

[0009] Preferably, the heating core bar is a spiral structure inside the desiccant pipe, and the axial sections of the heating core bar and the desiccant pipe are concentric circle structures.

[0010] Preferably, four groups of screw holes are evenly formed on the surface of the dehumidification pipe, and four groups of through holes are evenly formed on the outer side of the sealing cover, and the fixing bolts pass through the through holes formed on the sealing cover and are screwed into the screw holes formed on the dehumidification pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the compressed gas contacts the spirally arranged high-temperature heating core strip, and the moisture in the compressed gas can be dried by the high-temperature heating core strip, so that the compressed gas does not contain water vapor, thereby avoiding the reaction of water vapor with the resin component in the sand core to reduce the hardness of the sand core product, thereby improving the molding quality of the sand core product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of the structure of the utility model;

[0013] Figure 2 The utility model structure Figure 1 Side view of

[0014] Figure 3 The utility model structure Figure 1 A top view of

[0015] Figure 4 The utility model structure Figure 1 Bottom view of .

[0016] Numbers in the figure: 1. Compressed gas connecting pipe; 2. Horizontal pipe; 3. Dehumidification pipe; 4. Drying area; 5. Heating core strip; 6. Bottom sealing strip; 7. Sealing cover; 8. Side sealing strip; 9. Fixing bolt; 10. Cold core box connecting pipe. DETAILED DESCRIPTION

[0017] See also Figure 1-4 The utility model provides a cold core box core making purification gas pipeline, including a transverse tube 2, a desiccant tube 3 is fixedly installed on the transverse tube 2, and a compressed gas connecting tube 1 is fixedly installed at one end of the transverse tube 2, and a cold core box connecting tube 10 is fixedly installed at the other end of the transverse tube 2, and connecting flanges are installed at the ends of the cold core box connecting tube 10 and the compressed gas connecting tube 1, the end of the compressed gas connecting tube 1 is connected to an external compressed gas tank, and the end of the cold core box connecting tube 10 is connected to an external cold core box; a heating core strip 5 is fixedly installed in a drying area 4 opened inside the desiccant tube 3, and a sealing cover 7 is screwed and fixed on the outer side of the desiccant tube 3.

[0018] Working principle: When in use, the compressed gas enters the interior of the desiccant pipe 3 from the compressed gas connecting pipe 1 and the transverse pipe 2, and contacts the spirally arranged high-temperature heating core strip 5. The moisture in the compressed gas can be dried by the high-temperature heating core strip 5, so that the compressed gas does not contain water vapor, avoiding the reaction of water vapor with the resin component in the sand core to reduce the hardness of the sand core product, thereby improving the molding quality of the sand core product.

[0019] As a preferred embodiment, the compressed gas connecting pipe 1, the transverse pipe 2 and the cold box connecting pipe 10 are combined together into a "U" shape, and the compressed gas connecting pipe 1 and the cold box connecting pipe 10 are arranged horizontally.

[0020] The surface of the desiccant pipe 3 is provided with a receiving opening, and the receiving opening is adapted to the size of the sealing cover 7 . Meanwhile, the sealing cover 7 covers the outside of the receiving opening and is screwed and fixed by four sets of fixing bolts 9 .

[0021] like Figure 1-4 As shown: the sealing cover 7 covers the outside of the accommodating opening and is screwed and fixed by four sets of fixing bolts 9. The end of the heating core strip 5 can be fixed to the sealing cover 7. By disassembling the sealing cover 7, the heating core strip 5 can be taken out from the desiccant pipe 3.

[0022] As a preferred embodiment, the cross-section of the sealing cover 7 is "C"-shaped, and the length of the sealing cover 7 is greater than the length of the heating core strip 5. At the same time, the sealing cover 7 and the receiving port are sealed by a bottom sealing strip 6 and a side sealing strip 8.

[0023] The heating core strip 5 is a spiral structure inside the desiccant pipe 3, and the axial sections of the heating core strip 5 and the desiccant pipe 3 are concentric circle structures.

[0024] The heating core strip 5 is a spiral structure, which increases the contact area between the compressed gas and the heating core strip 5 and improves the drying effect of the heating core strip 5 on the compressed air.

[0025] As a preferred embodiment, four groups of screw holes are evenly opened on the surface of the dehumidification pipe 3, and four groups of through holes are evenly opened on the outer side of the sealing cover 7. The fixing bolts 9 pass through the through holes opened on the sealing cover 7 and are screwed into the screw holes opened on the dehumidification pipe 3.

Claims

1. A cold box core making purge gas pipeline, comprising a transverse pipe (2), characterized in that: The dehumidification pipe (3) is fixedly mounted on the transverse pipe (2), and a compressed gas connecting pipe (1) is fixedly mounted on one end of the transverse pipe (2), while a cold box connecting pipe (10) is fixedly mounted on the other end of the transverse pipe (2), and connecting flanges are installed at the ends of the cold box connecting pipe (10) and the compressed gas connecting pipe (1), the end of the compressed gas connecting pipe (1) is connected to an external compressed gas tank, and the end of the cold box connecting pipe (10) is connected to an external cold box; a heating core strip (5) is fixedly mounted in a drying area (4) opened inside the dehumidification pipe (3), and a sealing cover (7) is screwed and fixed to the outer side of the dehumidification pipe (3).

2. A cold box core making purge air pipeline according to claim 1, characterized in that: The compressed gas connecting pipe (1), the transverse pipe (2) and the cold core box connecting pipe (10) are combined together to form a "U" shape, and the compressed gas connecting pipe (1) and the cold core box connecting pipe (10) are arranged horizontally.

3. A cold box core making purge air pipeline according to claim 1, characterized in that: The surface of the desiccant pipe (3) is provided with a receiving opening, and the receiving opening is adapted to the size of the sealing cover (7). The sealing cover (7) covers the outside of the receiving opening and is screwed and fixed by four sets of fixing bolts (9).

4. A cold box core making purge air pipeline according to claim 3, characterized in that: The cross section of the sealing cover (7) is set in a "C" shape, and the length of the sealing cover (7) is greater than the length of the heating core strip (5). At the same time, the sealing cover (7) and the receiving port are sealed by a bottom sealing strip (6) and a side sealing strip (8).

5. The cold box core making purge air pipeline according to claim 1, characterized in that: The heating core strip (5) is a spiral structure inside the desiccant pipe (3), and the axial sections of the heating core strip (5) and the desiccant pipe (3) are concentric circle structures.

6. A cold box core making purge air pipeline according to claim 3, characterized in that: The surface of the dehumidification pipe (3) is evenly provided with four groups of screw holes, and the outer side of the sealing cover (7) is evenly provided with four groups of through holes, and the fixing bolts (9) pass through the through holes provided on the sealing cover (7) and are screwed into the screw holes provided on the dehumidification pipe (3).

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