Cast iron machine device adopting aerial fog cooling

Abstract

A pig casting machine device adopting aerial fog cooling is characterized by comprising a pig casting machine (1), a pig casting mold (2), a first aerial fog cooling section (3), a second aerial fog cooling section (4) and a third aerial fog cooling section (5), and the first aerial fog cooling section (3), the second aerial fog cooling section (4) and the third aerial fog cooling section (5) are arranged at intervals in the movement direction of the pig casting machine (1). And the three cooling sections are arranged at intervals, so that disassembly and assembly are convenient, the influence of temperature return on the product is avoided, and middle cracks are avoided. When the cast iron is cooled by aerial fog, the diameter of water drops is reduced by 80-90%, and the cast iron is cooled more uniformly; nozzle blockage is reduced, and maintenance is convenient; the water spraying amount is saved by 40%-50%; and the chilling and crushing proportion of the high-purity pig iron is reduced.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the field of steel smelting, and more particularly, to an iron casting machine device using gas mist cooling. Background Art

[0002] The cast iron machine is a device used to cast pig iron blocks and is widely used in the metallurgical and foundry industries. In order to allow the cast iron to cool and form quickly and evenly in the iron mold, it is often necessary to spray water on the surface of the newly solidified cast iron in the middle or tail of the cast iron machine.

[0003] High-purity pig iron is often used to manufacture high-end ductile iron castings such as wind power, nuclear power and high-speed trains. Conventional water spray cooling often causes pig iron blocks to turn white due to uneven cooling, and some iron blocks fall from the circulating chain of the cast iron machine onto the cement floor and break due to high brittleness. Therefore, it is necessary to optimize the cooling method to reduce the whitening and breakage of high-purity pig iron blocks. Utility Model Content

[0004] The utility model aims to provide an iron casting machine device adopting gas mist cooling to solve the problems of white cast iron and easy breakage of the current high-purity pig iron block.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A casting machine device using gas mist cooling comprises a casting machine 1, a casting mold 2, a gas mist cooling stage 1 3, a gas mist cooling stage 2 4 and a gas mist cooling stage 3 5, wherein the gas mist cooling stage 1 3, the gas mist cooling stage 2 4 and the gas mist cooling stage 3 5 are arranged at intervals along the moving direction of the casting machine 1.

[0007] Furthermore, the first gas mist cooling section 3 , the second gas mist cooling section 4 and the third gas mist cooling section 5 are spaced 20-60 cm apart along the moving direction of the iron casting machine 1 .

[0008] Furthermore, the first section 3 of aerosol cooling is composed of a first spray header 61, a first nozzle 71, a first water pipe 81, and a first compressed air pipe 91, the first water pipe 81 is equipped with an electromagnetic flowmeter and a flow regulating valve, and the first compressed air pipe 91 is equipped with a pressure regulating valve; the second section 4 of aerosol cooling is composed of a second spray header 62, a second nozzle 72, a second water pipe 82, and a second compressed air pipe 92, the second water pipe 82 is equipped with an electromagnetic flowmeter and a flow regulating valve, and the second compressed air pipe 92 is equipped with a pressure regulating valve; the third section 5 of aerosol cooling is composed of a third spray header 63, a third nozzle 73, a third water pipe 83, and a third compressed air pipe 93, the third water pipe 83 is equipped with an electromagnetic flowmeter and a flow regulating valve, and the third compressed air pipe 93 is equipped with a pressure regulating valve.

[0009] Furthermore, the mist cooling section 3 is installed at a distance from the head of the iron casting machine 1 that is 1 / 5 to 1 / 4 of the length of the iron casting machine, and 5 to 8 first nozzles 71 are installed thereon.

[0010] Furthermore, the second gas mist cooling stage 4 is installed at a distance from the head of the iron casting machine 1 that is 1 / 2 to 3 / 5 of the length of the iron casting machine, and 6 to 9 first nozzles 71 are installed thereon.

[0011] Furthermore, the third stage of mist cooling 5 is installed at a distance of 3 / 4 to 4 / 5 of the length of the iron casting machine from the head of the iron casting machine 1, and 7 to 10 first nozzles 71 are installed thereon.

[0012] Further, the first nozzle 71 includes a water inlet hole and an air inlet hole, the first water pipe 81 and the first compressed air pipe 91 both enter the first spray header 61 and are separated, the first water pipe 81 is connected to the water inlet hole, and the first compressed air pipe 91 is connected to the air inlet hole; the second nozzle 72 includes a water inlet hole and an air inlet hole, the second water pipe 82 and the second compressed air pipe 92 both enter the second spray header 62 and are separated, the second water pipe 82 is connected to the water inlet hole, and the second compressed air pipe 92 is connected to the air inlet hole; the third nozzle 73 includes a water inlet hole and an air inlet hole, the third water pipe 83 and the third compressed air pipe 93 both enter the third spray header 63 and are separated, the third water pipe 83 is connected to the water inlet hole, and the third compressed air pipe 93 is connected to the air inlet hole.

[0013] The advantages and effects of the utility model are as follows: (1) The interval arrangement of the three cooling sections facilitates disassembly and installation, and avoids the influence of temperature recovery on the product, thus avoiding the generation of cracks in the middle. (2) When the cast iron is cooled by gas mist, the diameter of the water droplets is reduced by 80% to 90%, and the cast iron is cooled more evenly; (3) The nozzle blockage is reduced, which is convenient for maintenance; (4) The amount of water sprayed is saved by 40% to 50%; (5) The proportion of white cast iron and broken is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a cast iron machine device using gas mist cooling in this utility model.

[0015] Among them: 1. cast iron machine; 2. cast iron mold; 3. aerosol cooling stage 1; 4. aerosol cooling stage 2; 5. aerosol cooling stage 3; 61. first spray header; 71. first nozzle; 81. first water pipe; 91. first compressed air pipe; 62. second spray header; 72. second nozzle; 82. second water pipe; 92. second compressed air pipe; 63. third spray header; 73. third nozzle; 83. third water pipe; 93. third compressed air pipe. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model is clearly and completely described below. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The technical solution of the utility model is further explained and illustrated below in conjunction with specific embodiments.

[0018] A cast iron machine device using gas mist cooling comprises a cast iron machine 1, a cast iron mold 2, a gas mist cooling first stage 3, a gas mist cooling second stage 4 and a gas mist cooling third stage 5.

[0019] Furthermore, the aerosol cooling stages one to three are composed of a first spray header 61, a second spray header 62, a third spray header 63, a first nozzle 71, a second nozzle 72, a third nozzle 73, a first water pipe 81, a second water pipe 82, a third water pipe 83, a first compressed air pipe 91, a second compressed air pipe 92, and a third compressed air pipe 93.

[0020] After receiving the liquid iron at the head of the iron casting machine 1, the cast iron mold 2 runs in sequence with the iron casting machine 1 to the aerosol cooling stage 1 3, the aerosol cooling stage 2 4, and the aerosol cooling stage 3 5, and is then cooled by the cooling water atomized from the nozzle, and finally falls into the cast iron block groove at the tail of the iron casting machine 1 under the action of gravity.

[0021] Cooling water enters the spray header through the water pipe, and compressed air also enters the spray header through the compressed air pipe. The cooling water and compressed air are separated in the spray header, and enter the water inlet and air inlet of the nozzle respectively, and mix in the inner cavity of the nozzle to complete the atomization of the cooling water. The atomized water is evenly sprayed on the solidified high-temperature cast iron from the nozzle outlet.

[0022] The water pipe is made of stainless steel, on which an electromagnetic flowmeter and a flow regulating valve are installed to display and adjust the water flow.

[0023] The compressed air pipe is also made of stainless steel, on which a pressure regulating valve is installed. The working pressure range is 0.1 to 0.3 MPa, and is generally set to 0.2 MPa.

[0024] The material of the spray header is also stainless steel pipe, and the material of the nozzle is brass.

[0025] The gas mist cooling section 3 is installed at 1 / 5 to 1 / 4 of the length of the cast iron machine (from the head of the cast iron machine), and 5 to 8 nozzles are installed thereon.

[0026] The second stage of gas mist cooling 4 is installed at 1 / 2 to 3 / 5 of the length of the cast iron machine (from the head of the cast iron machine), and 6 to 9 nozzles are installed thereon.

[0027] The third section 5 of the mist cooling is installed at 3 / 4 to 4 / 5 of the length of the cast iron machine (from the head of the cast iron machine), and 7 to 10 nozzles are installed thereon.

[0028] The nozzles of each section are evenly arranged below the spray header.

[0029] The water spraying amount of the first stage 3 of the mist cooling is 0.4-0.6L / kg iron, the water spraying amount of the second stage 4 of the mist cooling is 0.3-0.5L / kg iron, and the water spraying amount of the third stage 5 of the mist cooling is 0.2-0.4L / kg iron.

[0030] Example 1

[0031] A cast iron machine device using mist cooling includes a cast iron machine 1, a cast iron mold 2, a mist cooling stage 1 3, a mist cooling stage 2 4 and a mist cooling stage 3 5. The mist cooling stages 1 to 3 are installed at 1 / 4, 1 / 2 and 3 / 4 of the length of the cast iron machine (from the machine head), respectively, and are composed of a spray header, a nozzle, a water pipe and a compressed air pipe, wherein the number of nozzles is 6, 7 and 8 respectively. The mist cooling stages 1 to 3 are spaced 45 cm apart along the moving direction of the cast iron machine 1, which is convenient for the installation and disassembly of the mist cooling stages and avoids the occurrence of cracks in the middle of the cast iron due to a large temperature return caused by a large distance. When casting begins, the water pipes and compressed air pipes of the mist cooling stages 1 to 3 are opened, and the cooling water volume is 0.45 L / kg iron, 0.32 L / kg iron and 0.24 L / kg iron respectively, and the compressed air pressure is 0.2 MPa.

[0032] After receiving the liquid iron at the head of the iron casting machine 1, the cast iron mold 2 is sequentially operated with the iron casting machine 1 to the gas mist cooling stage 1 3, the gas mist cooling stage 2 4, and the gas mist cooling stage 3 5, and then cooled by the atomized cooling water, and finally falls into the cast iron block tank under the action of gravity at the tail of the iron casting machine 1. The high-purity pig iron blocks produced are observed, and no white cast iron or broken phenomenon is observed.

[0033] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be based on the scope defined in the attached claims.

Claims

1. A cast iron machine device using gas mist cooling, characterized in that: The invention comprises an iron casting machine (1), an iron casting mold (2), a first gas mist cooling section (3), a second gas mist cooling section (4) and a third gas mist cooling section (5), wherein the first gas mist cooling section (3), the second gas mist cooling section (4) and the third gas mist cooling section (5) are arranged at intervals along the moving direction of the iron casting machine (1).

2. The iron casting machine device using gas mist cooling according to claim 1, characterized in that: The first gas mist cooling section (3), the second gas mist cooling section (4) and the third gas mist cooling section (5) are spaced 20-60 cm apart along the moving direction of the iron casting machine (1).

3. The iron casting machine device using gas mist cooling according to claim 2, characterized in that: The first stage (3) of aerosol cooling is composed of a first spray header (61), a first nozzle (71), a first water pipe (81), and a first compressed air pipe (91); an electromagnetic flowmeter and a flow regulating valve are installed on the first water pipe (81); and a pressure regulating valve is installed on the first compressed air pipe (91); the second stage (4) of aerosol cooling is composed of a second spray header (62), a second nozzle (72), a second water pipe (82), and a second compressed air pipe (92); an electromagnetic flowmeter and a flow regulating valve are installed on the second water pipe (82); and a pressure regulating valve is installed on the second compressed air pipe (92); the third stage (5) of aerosol cooling is composed of a third spray header (63), a third nozzle (73), a third water pipe (83), and a third compressed air pipe (93); an electromagnetic flowmeter and a flow regulating valve are installed on the third water pipe (83); and a pressure regulating valve is installed on the third compressed air pipe (93).

4. The iron casting machine device using gas mist cooling according to claim 3, characterized in that: The mist cooling section (3) is installed at a distance from the head of the iron casting machine (1) of 1 / 5 to 1 / 4 of the length of the iron casting machine, and 5 to 8 first nozzles (71) are installed on it.

5. The iron casting machine device using gas mist cooling according to claim 4, characterized in that: The second gas mist cooling section (4) is installed at a distance from the head of the iron casting machine (1) of 1 / 2 to 3 / 5 of the length of the iron casting machine, and 6 to 9 first nozzles (71) are installed on it.

6. The iron casting machine device using gas mist cooling according to claim 5, characterized in that: The third stage of mist cooling (5) is installed at a distance from the head of the iron casting machine (1) of 3 / 4 to 4 / 5 of the length of the iron casting machine, and 7 to 10 first nozzles (71) are installed on it.

7. The iron casting machine device using gas mist cooling according to claim 6, characterized in that: The first nozzle (71) comprises a water inlet hole and an air inlet hole, the first water pipe (81) and the first compressed air pipe (91) both enter the first spray header (61) and are separated, the first water pipe (81) is connected to the water inlet hole, and the first compressed air pipe (91) is connected to the air inlet hole; the second nozzle (72) comprises a water inlet hole and an air inlet hole, the second water pipe (82) and the second compressed air pipe (92) both enter the second spray header (62) and are separated, the second water pipe (82) is connected to the water inlet hole, and the second compressed air pipe (92) is connected to the air inlet hole; the third nozzle (73) comprises a water inlet hole and an air inlet hole, the third water pipe (83) and the third compressed air pipe (93) both enter the third spray header (63) and are separated, the third water pipe (83) is connected to the water inlet hole, and the third compressed air pipe (93) is connected to the air inlet hole.

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