Chiller baking equipment for heating and drying by utilizing hot air of air compressor
By designing a cold iron baking equipment that uses hot air for air compressor heating and drying, the high construction cost and energy consumption problems caused by the new baking room in the foundry are solved, and efficient drying of cold iron is achieved, reducing production costs and improving product quality.
Patent Information
- Application Number
- CN202421998406.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-16
AI Technical Summary
In the prior art, in order to avoid moisture in cold iron during use, foundries need to directly build a new baking room, resulting in high construction costs and high energy consumption.
A cold iron baking equipment is designed to heat and dry with hot air from the air compressor. The waste heat generated by the air compressor is transferred to the oven, and the cold iron is dried by hot air.
Through the secondary utilization of waste heat of the air compressor, the construction cost of baking equipment is reduced, energy consumption is reduced, the overall cost is reduced, and the quality of cast products is improved.
Smart Images
Figure CN222925878U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting drying equipment, in particular to a chill mold baking device that uses the hot air of an air compressor for heating and drying. Background Art
[0002] The main steps of sand mold casting include drawing (drafting), tooling (mold making), core making, molding (sand box molding), melting, pouring, and cleaning, etc. During casting, after some castings are formed, due to uneven thickness, the thick walls cool slowly while the thin walls cool quickly, and shrinkage porosity, a casting defect, is extremely likely to occur in the thick-walled areas. Currently, in order to accelerate the local cooling rate of castings, the chillers placed inside the sand box cavity, on the surface of the sand box cavity, and inside the mold are called chill molds. The chill molds are used in conjunction with the gating system and riser system to control the solidification sequence of the castings. It can reduce the size of the riser, improve the process yield, and also improve the feeding channel to enhance the internal quality grade of the castings and provide high-quality castings.
[0003] The chill molds used in casting are exposed to the air and have moisture on the surface (especially in winter or rainy / snowy weather). If used directly, when casting products, the moisture evaporates at high temperature to form water vapor and enters the interior of the castings, resulting in a relatively high probability of casting pores. The pores will reduce the effective load-bearing area of the castings, cause stress concentration, and reduce the mechanical properties such as plasticity, toughness, and fatigue resistance of the castings; the pores will also reduce the airtightness of container castings that bear fluid working pressure and are prone to leakage. The pores exposed after machining seriously damage the surface quality of the machined surface and cause the castings to be scrapped. The internal pores are a serious hidden danger for the sudden failure of castings during operation. In order to avoid the presence of moisture in the chill molds during use, currently, foundries directly build new baking rooms for baking chill molds, but this requires a relatively high cost for building the baking rooms, and the heat is generated by electricity, resulting in a large waste of electricity, a relatively high overall cost, and high energy consumption. Content of the Utility Model
[0004] The purpose of the utility model is to provide a chill mold baking device that uses the hot air of an air compressor for heating and drying, aiming to solve the problems mentioned above.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] A chill mold baking device that uses the hot air of an air compressor for heating and drying, including an air compressor and a baking oven arranged on one side of the air compressor. One end of the air compressor is provided with an air compressor exhaust pipe, and the air compressor exhaust pipe is connected to the interior of the baking oven through a pipeline for delivering the hot air generated by the air compressor into the baking oven;
[0007] The interior of the baking oven is provided with a support frame, and the support frame is provided with a plurality of upright columns arranged at intervals. Cold iron support brackets are fixedly connected to the opposite side surfaces between the upright columns.
[0008] Preferably, a cold iron tray is provided at the top of the cold iron support bracket.
[0009] Preferably, a hot air discharge port is provided at the inner top of the baking oven, and the hot air discharge port is arranged vertically downward.
[0010] Preferably, a fan is installed on the hot air discharge port for the hot air to fully flow through the entire baking oven.
[0011] Preferably, a traction waste heat pipeline is connected to the air compressor exhaust pipe, the traction waste heat pipeline is connected to a mixed air main pipeline, the mixed air main pipeline is connected to a connecting pipeline, and the other end of the connecting pipeline is connected to the interior of the baking oven.
[0012] Preferably, a heat insulation layer is provided on the outer surface of the air compressor exhaust pipe.
[0013] Preferably, the thickness of the heat insulation layer is 50 mm.
[0014] Preferably, a rolling shutter door is installed at the entrance of the baking oven.
[0015] Preferably, the temperature inside the baking oven is 60°C - 70°C.
[0016] Preferably, pores are formed at the bottom and / or around the cold iron tray.
[0017] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:
[0018] In the present utility model, through the secondary utilization of the waste heat of the air compressor, the baking oven can complete the drying treatment of the cold iron. Compared with directly building a new baking room in the foundry, the method of secondary utilization of the waste heat of the air compressor avoids the problem of too high construction cost of the baking equipment, and there is no need to convert other energy sources for heating and drying, with relatively low overall cost and less energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic structural diagram of the present utility model.
[0020] Markings in the figure:
[0021] 1. Air compressor; 101. Air compressor exhaust pipe;
[0022] 2. Baking oven; 201. Support frame; 202. Upright column; 203. Cold iron support bracket;
[0023] 3. Traction waste heat pipeline; 4. Mixed air main pipeline; 5. Connecting pipeline; 6. Outer wall; 7. Chilled iron tray. Detailed implementation mode
[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0025] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "provided with", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0026] Refer to Figure 1 , a chilled iron baking equipment that uses the hot air of an air compressor for heating and drying, including an air compressor 1 and a baking oven 2. The baking oven 2 is provided on one side of the air compressor 1. When the equipment is installed in the factory area, the outer wall 6 of the foundry workshop can be utilized, and the baking oven 2 can be built on the side wall of the workshop using heat preservation partitions. During the operation of the air compressor 1, a large amount of waste heat gas will be generated, and the hot air can be transmitted into the baking oven 2.
[0027] A rolling shutter door is installed at the entrance of the baking oven 2 to facilitate opening or closing the entrance of the baking oven 2.
[0028] One end of the air compressor 1 is provided with an air compressor exhaust duct 101. The air compressor exhaust duct 101 is connected to the inside of the baking oven 2 through a pipeline, and is used to convey the hot air generated by the air compressor 1 into the baking oven 2. The inside of the baking oven 2 has a heat source for drying, and the chilled iron to be dried in the baking oven 2 can be dried.
[0029] A support frame 201 is provided inside the baking oven 2. A number of spaced upright columns 202 are provided on the support frame 201. Cold iron support brackets 203 are fixedly connected to the opposite side surfaces between the upright columns 202. A chilled iron tray 7 is provided at the top of the cold iron support bracket 203, and the chilled iron to be dried can be placed in the chilled iron tray 7 for drying treatment.
[0030] In this embodiment, by transferring the waste heat generated during the operation of the air compressor 1 into the baking oven 2, a heat source is provided inside the baking oven 2. Then, through the cooperation of the support frame 201 and the chill pallet support 203, the chill pallet support 203 can lift the chill pallet 7. Then, multiple chills to be dried can be placed in the lifted chill pallet 7, so that the chills to be dried can be dried in the baking oven 2. Through the secondary utilization of the waste heat of the air compressor 1, the baking oven 2 can complete the drying of the chills. Compared with directly building a new baking room in the foundry, the method of secondary utilization of the waste heat of the air compressor avoids the problem of too high construction cost of the baking equipment, and there is no need to convert other energy sources for heating and drying. The overall cost is relatively low, the consumed energy is less, and the production cost of the company is also reduced. It can also solve the problem of casting porosity defects caused by using un-baked chills in casting, greatly improving the quality of casting products and the work efficiency.
[0031] In a possible embodiment, as Figure 1 shown, pores are provided at the bottom and / or around the chill pallet 7. The number of pores is several, and several pores are evenly spaced. Through the pores, hot air ventilation is facilitated, so that the chills on the chill pallet 7 can be efficiently dried.
[0032] In a possible embodiment, as Figure 1 shown, in order to improve the hot air diffusion rate inside the baking oven 2, a hot air discharge port is provided at the inner top of the baking oven 2. The hot air discharge port is vertically downward, and a fan is installed on the hot air discharge port to ensure that the hot air fully flows through the entire baking oven 2, facilitating the baking of the chills inside the baking oven 2. The temperature inside the baking oven 2 can reach 60°C - 70°C.
[0033] In a possible embodiment, as Figure 1 shown, a heat insulation layer is provided on the outer surface of the air compressor exhaust pipe 101, and the thickness of the heat insulation layer can be 50 mm. A traction waste heat pipeline 3 is also connected to the air compressor exhaust pipe 101. The traction waste heat pipeline 3 is connected to a mixed air main pipeline 4, and the mixed air main pipeline 4 is connected to a connecting pipeline 5. The other end of the connecting pipeline 5 is connected to the inside of the baking oven 2. At this time, the connecting pipeline 5 can be connected to the hot air discharge port at the inner top of the baking oven 2. Through the cooperative setting of the air compressor exhaust pipe 101, the traction waste heat pipeline 3, the mixed air main pipeline 4, and the connecting pipeline 5, the hot air generated by the air compressor 1 can be transported into the baking oven 2.
Claims
1. A cold iron baking device that uses hot air from an air compressor for heating and drying, characterized in that: It comprises an air compressor (1) and a baking oven (2) arranged on one side of the air compressor (1); an air compressor exhaust duct (101) is arranged at one end of the air compressor (1); the air compressor exhaust duct (101) is connected to the interior of the baking oven (2) through a pipeline, and is used to transport hot air generated by the air compressor (1) into the baking oven (2); A support frame (201) is provided inside the baking oven (2), and a plurality of spaced-apart columns (202) are provided on the support frame (201), and cold iron support plate brackets (203) are fixedly connected to the opposite sides of the columns (202) and the columns (202).
2. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 1, characterized in that: A cold iron tray (7) is provided on the top of the cold iron support plate bracket (203).
3. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 1, characterized in that: The inner top of the baking oven (2) is provided with a hot air discharge port, and the hot air discharge port is arranged vertically downward.
4. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 3, characterized in that: The hot air discharge port is provided with a fan for allowing the hot air to fully flow through the entire baking oven (2).
5. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 1, characterized in that: The air compressor exhaust pipe (101) is connected to a traction waste heat pipeline (3), the traction waste heat pipeline (3) is connected to a mixed air main pipeline (4), the mixed air main pipeline (4) is connected to a connecting pipeline (5), and the other end of the connecting pipeline (5) is connected to the interior of the baking oven (2).
6. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 1, characterized in that: The outer surface of the air compressor exhaust tube (101) is provided with a heat-insulating layer.
7. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 6, characterized in that: The thickness of the thermal insulation layer is 50 mm.
8. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 1, characterized in that: A rolling door is installed at the entrance of the baking oven (2).
9. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 1, characterized in that: The temperature inside the baking oven (2) is 60°C-70°C.
10. The cold iron baking equipment using air compressor hot air for heating and drying according to claim 2, characterized in that: The bottom and / or surrounding of the cold iron tray (7) are provided with holes.