CN114799134B - Control valve system, cast part cooling system and cast part cooling method - Google Patents
Control valve system, cast part cooling system and cast part cooling method Download PDFInfo
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- CN114799134B CN114799134B CN202210447301.3A CN202210447301A CN114799134B CN 114799134 B CN114799134 B CN 114799134B CN 202210447301 A CN202210447301 A CN 202210447301A CN 114799134 B CN114799134 B CN 114799134B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
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Abstract
The application belongs to the technical field of casting, and particularly relates to a control valve system, a cast part cooling system and a cast part cooling method, wherein the control valve system comprises a multi-way pilot reversing valve, a first cooling mechanism, a second cooling mechanism, a flushing mechanism, a blowing mechanism, a protection liquid injection mechanism and a pressure release valve, and the multi-way pilot reversing valve is provided with five air outlets, can flexibly control the work of each mechanism, is convenient to operate and has high control stability; the application also provides a casting cooling system and a casting cooling method, wherein the casting cooling system is provided with a plurality of operation processes, adopts a stepped cooling mode of water and liquid nitrogen, and the spray heads are uniformly arranged in the circumferential direction, so that the cooling efficiency and effect of a single casting are greatly improved, and the yield is improved; the conveyor belt conveys casting parts to carry out cooling pipelining, so that the cooling efficiency of mass casting parts is greatly improved.
Description
Technical Field
The application relates to the technical field of casting, in particular to a control valve system, a casting cooling system and a casting cooling method.
Background
In the existing casting cooling process, the casting is generally directly put into cooling liquid (the cooling liquid is generally water) from casting equipment through a manual operation machine for cooling, the method has the advantages of low cost and simple operation, but has great defects that the casting is directly put into water at the beginning of casting forming, the surface of the casting is directly contacted with a large amount of water, the surface temperature of the casting is rapidly reduced (for example, the temperature is instantaneously reduced to 100 ℃ from 1200 ℃), however, the temperature is still higher in the casting due to the fact that the temperature conduction needs a certain time, so that the casting is not uniformly cooled, cracks, even burst, product scrapping and personnel injury are easily caused, and the manual operation cooling mode is low in efficiency.
Second, in some casting cooling apparatuses, although in the form of spraying the cooling liquid, the casting is also unevenly cooled and cracked by spraying it in only one direction, and the duration of the water spray cooling process is longer because the cooling efficiency of spraying water to the surface of the casting is lower than that of directly placing the casting in water. And, adopting the water spray mode, when the casting temperature is greater than 100 ℃, the cooling water and the casting temperature difference are big, and water encounters the direct gasification of casting, and cooling efficiency is higher, but when the casting is less than 100 ℃, the cooling efficiency of cooling water spray will drop by a wide margin (for example, adopting 30 ℃ water spray, it takes 2 minutes to drop the casting from 1200 ℃ to 100 ℃, but it takes more than 10 minutes to drop the casting from 100 ℃ to 50 ℃), this will seriously affect the work progress of casting cooling. And, after the water spray cooling, a large amount of water is evaporated, and the cooling effect of the water which is not evaporated is also reduced due to the higher temperature, which leads to a large amount of water resource waste.
In the existing cast part cooling equipment, the electrical equipment is adopted for control, the electrical equipment is positioned close to the cooling equipment and even inside the cooling equipment, and due to the high temperature influence of the cast part, the service life of the electrical equipment is greatly shortened, and the operation stability of the cooling equipment is influenced.
Disclosure of Invention
The application aims to solve the problems of poor cooling effect, low efficiency, water resource waste and the like of cast parts in the prior art, and provides a control valve system, a cast part cooling system and a cast part cooling method.
In order to achieve the above purpose, the present application adopts the following technical scheme:
a control valve system, characterized by: the device comprises a multi-way pilot reversing valve, a first cooling mechanism, a second cooling mechanism, a flushing mechanism, a blowing mechanism, a protective liquid injection mechanism and a pressure release valve; the multi-way pilot reversing valve comprises a circular valve body and a circular rotary valve core; the valve core is rotatably arranged in the valve body, the bottom of the valve core is provided with a valve core air inlet which is connected with a pilot air source, the side part of the valve core is provided with at least one valve core air outlet, and the extending directions of the valve core air inlet and the valve core air outlet are mutually perpendicular; six openings which can be communicated with the valve core air outlet are arranged on the circumference of the valve body, the included angle between the adjacent openings is 60 degrees, and the six openings are a plugging opening, a first air outlet, a second air outlet, a third air outlet, a fourth air outlet and a fifth air outlet respectively; a plugging bolt is arranged at the plugging port; the first air outlet, the second air outlet, the third air outlet, the fourth air outlet and the fifth air outlet are respectively connected with pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protection liquid spraying mechanism through pipelines; the pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protection liquid injection mechanism are respectively connected with the pressure release valve through pipelines.
Preferably, the pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism and the protection liquid injection mechanism are all valve pneumatic actuators; the blowing mechanism comprises a fan, and the pneumatic actuator of the blowing mechanism is a pneumatic switch.
Preferably, the number of the valve core air outlets is three, and the included angle between the adjacent valve core air outlets is 120 degrees.
The application also provides a casting cooling system, which comprises a control valve system, a shell, a filtering mechanism, a cooling liquid collecting tank and a conveyor belt; the inner space of the shell is approximately cylindrical, openings are formed at two ends of the shell, and the conveyor belt is arranged in the middle of the shell and penetrates through the two ends of the shell; the bottom of the shell is provided with a cooling liquid collecting tank, a liquid leakage plate is arranged between the shell and the cooling liquid collecting tank, a filtering mechanism is arranged in the cooling liquid collecting tank, and the cooling liquid collecting tank is connected with a cooling liquid storage device through a cooling liquid recovery pipe; a first spray head, a second spray head, a third spray head, a blowing head and a fourth spray head are sequentially arranged on the inner wall of the shell from one end to the other end; the outside of the shell is provided with a control valve system, the first cooling mechanism is connected with the cooling liquid storage device through a first liquid inlet pipe, the first liquid inlet pipe is provided with a booster pump, and the first cooling mechanism is connected with the first spray head through a first liquid outlet pipe; the second cooling mechanism is connected with a low-temperature liquid tank through a second liquid inlet pipe, liquid nitrogen or liquid carbon dioxide is filled in the low-temperature liquid tank, and the second cooling mechanism is connected with a second spray head through a second liquid outlet pipe; the flushing mechanism is connected with the cooling liquid storage device through a third liquid inlet pipe, a pressurizing pump is arranged on the third liquid inlet pipe, and the flushing mechanism is connected with a third spray head through a third liquid outlet pipe; the air blowing mechanism is communicated with the atmosphere through an air inlet pipe, a fan is arranged on the air inlet pipe, and the air blowing mechanism is connected with an air blowing head through an air outlet pipe; the protection liquid injection mechanism is connected with the protection liquid storage device through a fourth liquid inlet pipe, a pressurizing pump is arranged on the fourth liquid inlet pipe, and the protection liquid injection mechanism is connected with a fourth spray head through a fourth liquid outlet pipe.
Preferably, the conveyor belt is a hollow-out belt-shaped structure made of metal materials.
Preferably, the first annular partition plate, the second annular partition plate, the third annular partition plate and the fourth annular partition plate are respectively arranged between every two adjacent first spray nozzles, second spray nozzles, third spray nozzles, blowing heads and fourth spray nozzles, the shell is divided into five groups of spaces through the annular partition plates, and the five groups of spaces are sequentially a first space, a second space, a third space, a fourth space and a fifth space.
Preferably, three groups of first spray heads, three groups of second spray heads, three groups of third spray heads, three groups of air blowing heads and three groups of fourth spray heads are respectively arranged in the first space, the second space, the third space, the fourth space and the fifth space, and the three groups of first spray heads, the three groups of second spray heads, the three groups of third spray heads, the three groups of air blowing heads and the three groups of fourth spray heads are respectively arranged in an isosceles triangle shape in the inner circumferential direction of the shell.
Preferably, two adjacent second spray heads, third spray heads, air blowing heads and fourth spray heads are respectively provided with a second annular partition plate, a third annular partition plate and a fourth annular partition plate, the two adjacent second spray heads, the third annular partition plate and the fourth annular partition plate are divided into four groups of spaces through the annular partition plates, and the first spray heads and the second spray heads are positioned in the same space.
The application also provides a casting cooling method, which comprises the following specific steps of:
s1, placing casting parts on a conveyor belt, wherein adjacent casting parts keep a preset interval;
s2, when the casting piece is conveyed to the first nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the first air outlet, the first cooling mechanism is opened for primary cooling, after the primary cooling is finished, the pressure release valve is opened for releasing pressure of an actuator of the first cooling mechanism, and the first cooling mechanism is closed;
s3, when the casting piece is conveyed to the second nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the second air outlet, the second cooling mechanism is opened for secondary cooling, and after the second cooling mechanism is completed, the pressure release valve is opened for pressure release of an actuator of the second cooling mechanism;
s4, when the casting piece is conveyed to the third nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the third air outlet, the flushing mechanism is opened to flush and clean the casting piece, and after the flushing is completed, the pressure release valve is opened to release pressure of an actuator of the flushing mechanism;
s5, when the casting piece is conveyed to the blowing head, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the fourth air outlet, the fan is opened, moisture on the surface of the casting piece is dried, and after the moisture is dried, the pressure release valve is opened to release pressure on an actuator of the blowing mechanism;
s6, when the casting piece is conveyed to the fourth nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the fifth air outlet, the protection liquid spraying mechanism is opened, protection liquid is sprayed on the surface of the casting piece, and after the casting piece is finished, the pressure release valve is opened to release pressure of an actuator of the protection liquid spraying mechanism;
s7: when the next cast member enters the housing, the operations of steps S2-S6 are repeated.
The control valve system, the cast part cooling system and the cast part cooling method provided by the application have the beneficial effects that:
1. the multi-way pilot reversing valve is remotely operated, so that the cooling system of the casting part at high temperature can be farther away, the exposure of personnel in a high-temperature environment is avoided, and the working environment of operators is improved; the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protection liquid injection mechanism are controlled simultaneously through the multi-way pilot reversing valve, so that the operation difficulty is reduced, and the operation is simpler and more convenient.
2. In the casting cooling system, a first cooling mechanism, a second cooling mechanism, a flushing mechanism, a blowing mechanism and a protective liquid spraying mechanism are sequentially arranged, and three groups of the mechanisms are respectively and uniformly arranged, so that the operation treatment can be fully and uniformly carried out; the whole cooling process adopts the pipelining treatment of the conveyor belt, and the efficiency is high.
3. The cooling process adopts a stepped cooling mode, so that the cooling effect is good and the efficiency is high. The first cooling mechanism adopts water to spray and cool, the cooling is even, compared with the method that the cast piece is immersed in water directly, cracks are not easy to generate, the cast piece can be quickly reduced to about 100 ℃ from above 1200 ℃ by water spraying cooling, when the temperature of the cast piece is reduced to below 100 ℃, the water cooling efficiency is greatly reduced, at the moment, the cast piece is quickly reduced to 30-50 ℃ from 100 ℃ by liquefied nitrogen or liquefied carbon dioxide, the temperature is close to normal temperature, the method is more friendly to workers, and the cooling efficiency of the cast piece is greatly improved by adopting a step cooling mode of two different media.
4. The liquefied nitrogen or the liquefied carbon dioxide can also reduce the temperature of the internal environment of the shell, is favorable for liquefying the water vapor, improves the recovery rate of the water vapor and reduces the waste of water resources.
5. Some clastic particles exist on the surface of the casting piece, after the first cooling and the second cooling, the casting piece is cleaned by spraying water through a spray nozzle, so that the surface of the casting piece is cleaner, after the surface of the casting piece is cleaned, the surface of the casting piece is dried by a fan, and the clean and dry surface is favorable for covering of subsequent protective oil; the casting is protected from corrosion by spraying a protective oil on the surface of the casting.
6. In the casting cooling system, a cooling liquid collecting tank is arranged, so that the cooling liquid can be recycled, and the waste of resources is reduced; the whole process adopts the mode operation of pilot valve pneumatic control, compares higher in automatically controlled stability, and only the fan is the consumer, and cooling system is outside, is connected with the casing through the air-supply line, does not receive the temperature influence of casting.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application.
FIG. 1 is a schematic diagram of a multi-way pilot operated directional valve of the present application;
FIG. 2 is a schematic diagram of a multi-way pilot reversing valve according to the present application;
FIG. 3 is a schematic diagram of another embodiment of a multi-way pilot operated directional valve of the present application;
FIG. 4 is a schematic diagram II of another embodiment of a multi-way pilot operated directional valve of the present application;
FIG. 5 is a schematic view of the cast member cooling system of the present application;
FIG. 6 is a schematic structural view of another embodiment of the casting cooling system of the present application;
fig. 7 is a cross-sectional view at the broken line a of fig. 5 and 6.
In the figure: the multi-way pilot reversing valve 1, the valve body 101, the rotary valve core 102, the plugging port 1011, the first air outlet 1012, the second air outlet 1013, the third air outlet 1014, the fourth air outlet 1015, the fifth air outlet 1016, the valve core air inlet 1021 and the valve core air outlet 1022; the first cooling mechanism 2, the first liquid inlet pipe 201, the first liquid outlet pipe 202 and the first spray head 203; the second cooling mechanism 3, a second liquid inlet pipe 301, a second liquid outlet pipe 302 and a second spray head 303; the flushing mechanism 4, a third liquid inlet pipe 401, a third liquid outlet pipe 402 and a third spray head 403; the air blowing mechanism 5, the air inlet pipe 501, the air outlet pipe 502 and the air blowing head 503; the protection liquid spraying mechanism 6, a fourth liquid inlet pipe 601, a fourth liquid outlet pipe 602 and a fourth spray head 603; the casing 7, the drain plate 71, the filter mechanism 8, the coolant collecting tank 9, the coolant recovery pipe 901, the conveyor belt 10, and the casting 11.
Detailed Description
The following detailed description of embodiments of the present application will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present application can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.
First embodiment: referring to fig. 1-7, a control valve system comprises a multi-way pilot reversing valve 1, a first cooling mechanism 2, a second cooling mechanism 3, a flushing mechanism 4, a blowing mechanism 5, a protection liquid injection mechanism 6 and a pressure relief valve (not shown in the figure); the multi-way pilot reversing valve 1 comprises a circular valve body 101 and a circular rotary valve core 102; the valve core 102 is rotatably arranged in the valve body 101, a valve core air inlet 1021 is arranged at the bottom of the valve core 102, the valve core air inlet 1021 is connected with a pilot air source, at least one valve core air outlet 1022 is arranged at the side part of the valve core 102, and the extending directions of the valve core air inlet 1021 and the valve core air outlet 1022 are mutually perpendicular; six openings which can be communicated with the valve core air outlet 1022 are arranged on the circumference of the valve body, the included angle between the adjacent openings is 60 degrees, and the six openings are a plugging port 1011, a first air outlet 1012, a second air outlet 1013, a third air outlet 1014, a fourth air outlet 1015 and a fifth air outlet 1016 respectively; a plugging bolt is arranged at the plugging port 1011; the first air outlet 1012, the second air outlet 1013, the third air outlet 1014, the fourth air outlet 1015 and the fifth air outlet 1016 are respectively connected with pneumatic actuators of the first cooling mechanism 2, the second cooling mechanism 3, the flushing mechanism 4, the blowing mechanism 5 and the protection liquid spraying mechanism 6 through pipelines; pneumatic actuators of the first cooling mechanism 2, the second cooling mechanism 3, the flushing mechanism 4, the blowing mechanism 5 and the protective liquid spraying mechanism 6 are respectively connected with a pressure release valve through pipelines; by controlling the relief valve, the gas in the pneumatic actuator can be discharged, and the first cooling mechanism 2, the second cooling mechanism 3, the flushing mechanism 4, the blowing mechanism 5, and the protection liquid injection mechanism 6 can be stopped.
The first cooling mechanism 2, the second cooling mechanism 3, the flushing mechanism 4 and the protection liquid injection mechanism 6 are all valves, can be opened and closed under the control of the multi-way pilot reversing valve and the pressure release valve, and can operate a plurality of valves at the same time, so that the operation is more convenient; the blowing mechanism 5 comprises a fan, the pneumatic actuator of the blowing mechanism is a pneumatic switch, and the on-off of a power supply of the fan is controlled by controlling the on-off of the pneumatic switch.
When the spool air outlet port 1022 is in communication with the first air outlet port 1012, the pilot gas can be introduced into the pneumatic actuator of the first cooling mechanism 2, thereby opening the first cooling mechanism 2; when the valve core air outlet 1022 is not communicated with the first air outlet 1012, the air pressure in the pneumatic actuator of the first cooling mechanism 2 can be discharged through the pressure release valve, so that the first cooling mechanism 2 stops working; furthermore, the second cooling mechanism 3, the flushing mechanism 4, the blowing mechanism 5 or the protective liquid spraying mechanism 6 have the same principle of operation as the first cooling mechanism 2.
Referring to fig. 3 and 4, the number of the valve core air outlets 1022 is three, and the included angle between the adjacent valve core air outlets 1022 is 120 °. In the rotation process of the valve core 102, two pipeline connection states are provided, wherein the first connection state is that the valve core air outlet 1022 is simultaneously communicated with the plugging port 1011, the second air outlet 1013 and the fourth air outlet 1015, and the second connection state is that the valve core air outlet 1022 is simultaneously communicated with the first air outlet 1012, the third air outlet 1014 and the fifth air outlet 1016. By arranging the three valve core air outlets 1022, three operation processes can be performed simultaneously, and the working efficiency of casting cooling can be greatly improved in the mass production and cooling processes of castings.
Referring to fig. 5, a cast member cooling system includes a control valve system, a housing 7, a filter mechanism 8, a coolant collection tank 9, and a conveyor belt 10; the inner space of the shell 7 is approximately cylindrical, two ends of the shell 7 are open, the conveyor belt 10 is arranged in the middle of the shell 7 and penetrates through two ends of the shell 7, the conveyor belt 10 conveys the high-temperature casting into a cooling system, and after cooling, the casting is conveyed out; the conveyer belt 10 is of a hollowed-out strip-shaped structure made of metal materials, so that the conveyer belt can bear the high temperature of a casting piece, and meanwhile, the contact area between the conveyer belt 10 and a casting piece support is reduced, and the conveyer belt is beneficial to the cooling liquid to fully contact the high-temperature casting piece; the bottom of the shell 7 is provided with a cooling liquid collecting tank 9, a liquid leakage plate 71 is arranged between the shell 7 and the cooling liquid collecting tank 9, a filtering mechanism 8 is arranged in the cooling liquid collecting tank 9, and the cooling liquid collecting tank 9 is connected with a cooling liquid storage device through a cooling liquid recovery pipe 901 and used for recovering the filtered cooling liquid into the cooling liquid storage device, so that the waste of the cooling liquid is reduced; the cooling liquid can be water; a first nozzle 203, a second nozzle 303, a third nozzle 403, a blowing head 503 and a fourth nozzle 603 are arranged on the inner wall of the shell 7 in sequence from right to left; the outside of the shell 7 is provided with a control valve system, the first cooling mechanism 2 is connected with a cooling liquid storage device through a first liquid inlet pipe 201, a pressurizing pump is arranged on the first liquid inlet pipe 201, and the first cooling mechanism 2 is connected with a first spray head 203 through a first liquid outlet pipe 202; the second cooling mechanism 3 is connected with a low-temperature liquid tank through a second liquid inlet pipe 301, liquid nitrogen or liquid carbon dioxide is filled in the low-temperature liquid tank, and the second cooling mechanism 3 is connected with a second spray head 303 through a second liquid outlet pipe 302; the flushing mechanism 4 is connected with a cooling liquid storage device through a third liquid inlet pipe 401, a pressurizing pump is arranged on the third liquid inlet pipe 401, and the flushing mechanism 4 is connected with a third spray head 403 through a third liquid outlet pipe 402; the air blowing mechanism 5 is communicated with the atmosphere through an air inlet pipe 501, a fan is arranged on the air inlet pipe 501, and the air blowing mechanism 5 is connected with an air blowing head 503 through an air outlet pipe 502; the protection liquid injection mechanism 6 is connected with the protection liquid storage device through a fourth liquid inlet pipe 601, a pressurizing pump is arranged on the fourth liquid inlet pipe 601, and the protection liquid injection mechanism 6 is connected with a fourth spray head 603 through a fourth liquid outlet pipe 602.
Referring to fig. 5 and 7, the first nozzle 203, the second nozzle 303, the third nozzle 403, the air blowing head 503, and the fourth nozzle 603 are disposed between two adjacent nozzles, and a first annular partition, a second annular partition, a third annular partition, and a fourth annular partition are disposed between two adjacent nozzles, and the annular partition divides the housing 7 into five groups of spaces, namely, a first space, a second space, a third space, a fourth space, and a fifth space, in order, so that mutual interference between different spaces can be reduced by the partition. Three groups of first spray heads 203 are arranged in the first space, and the three groups of first spray heads 203 are arranged on the inner circumference of the shell 7 in an isosceles triangle shape, so that the first spray heads 203 can cover the casting more comprehensively, the cooling is more comprehensively and uniformly, and cracks cannot be generated due to uneven cooling. Similarly, for more uniform spraying, three groups of second nozzles 303, three groups of third nozzles 403, three groups of blowing heads 503, and three groups of fourth nozzles 603 are respectively arranged in the second space, the third space, the fourth space, and the fifth space, and the three groups of second nozzles 303, the three groups of third nozzles 403, the three groups of blowing heads 503, and the three groups of fourth nozzles 603 are respectively arranged in an isosceles triangle on the inner circumference of the housing 7.
Second embodiment: referring to fig. 6, the difference from the first embodiment is that the annular partition between the first space and the second space is removed, so that the second annular partition, the third annular partition, and the fourth annular partition are respectively provided between every two adjacent second nozzle 303, third nozzle 403, air blowing head 503, and fourth nozzle 603 from right to left on the inner wall of the housing 7, and are divided into four groups of spaces by the annular partition, and the first nozzle 203 and the second nozzle 303 are located in the same space. The purpose of this is that when the high temperature casting piece enters the shell 7, the first nozzle 203 is sprayed on the surface of the high temperature casting piece, a large amount of water vapor is generated by vaporization, and the water vapor overflows through the opening of the shell 7, so that water resource waste is caused; when the first nozzle 203 finishes spraying, the conveyor belt 10 conveys the casting 11 to the second nozzle 303, the second nozzle 303 sprays liquid nitrogen or liquid carbon dioxide to further cool the surface of the casting, and at the same time, the liquid nitrogen or liquid carbon dioxide is gasified after being heated, but the temperature of the liquid nitrogen or liquid carbon dioxide is lower than that of the water vapor, which can help the liquefaction of the water vapor in the shell 7, so that the cooling water flowing into the cooling water collecting tank 9 at the bottom of the shell 7 is recovered, and the water resource waste is reduced.
Third embodiment: a casting cooling method, which comprises the following specific steps of:
s1, placing casting pieces 11 on a conveyor belt 10, wherein the adjacent casting pieces 11 keep a preset interval;
s2, when the casting 11 is conveyed to the first nozzle 203, the multi-way pilot reversing valve 1 is regulated to enable the valve core air outlet 1022 to be communicated with the first air outlet 1012, the first cooling mechanism 2 is opened for first cooling, after the first cooling is finished, the decompression valve is opened to decompress an actuator of the first cooling mechanism 2, and the first cooling mechanism 2 is closed;
s3, when the casting piece 11 is conveyed to the second spray head 303, the multi-way pilot reversing valve 1 is regulated to enable the valve core air outlet 1022 to be communicated with the second air outlet 1013, the second cooling mechanism 3 is opened for secondary cooling, and after the second cooling mechanism is completed, the pressure relief valve is opened for pressure relief of an actuator of the second cooling mechanism 3;
s4, when the casting 11 is conveyed to the third spray head 403, the multi-way pilot reversing valve 1 is regulated to enable the valve core air outlet 1022 to be communicated with the third air outlet 1014, the flushing mechanism 4 is opened to flush and clean the casting, and after the flushing is completed, the pressure release valve is opened to release pressure of an actuator of the flushing mechanism 4;
s5, when the casting piece 11 is conveyed to the blowing head 503, the multi-way pilot reversing valve 1 is regulated to enable the valve core air outlet 1022 to be communicated with the fourth air outlet 1015, a fan is turned on, moisture on the surface of the casting piece is dried, and after the moisture is dried, a pressure release valve is turned on to release pressure of an actuator of the blowing mechanism 5;
s6, when the casting piece 11 is conveyed to the fourth nozzle 603, the multi-way pilot reversing valve 1 is regulated to enable the valve core air outlet 1022 to be communicated with the fifth air outlet 1016, the protection liquid spraying mechanism 6 is opened, protection liquid is sprayed on the surface of the casting piece, and after the completion, a pressure release valve is opened to release pressure of an actuator of the protection liquid spraying mechanism 6;
s7: when the next casting 11 enters the housing 7, the operations of steps S2-S6 are repeated.
In steps S2-S6, when the operation of any one of the steps is completed and the next cast piece does not enter the step, the pressure release valve is opened to release the pressure of the corresponding actuator, thereby closing the mechanism in the step. For example, when the cast member 11 enters the second space from the first space, the next cast member does not reach the first space yet, and at this time, the first cooling mechanism 2 can be closed by the pressure release valve, so that waste of resources is avoided.
Certain terms are used throughout the description and claims to refer to particular components. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect. The description hereinafter sets forth a preferred embodiment for practicing the application, but is not intended to limit the scope of the application, as the description is given for the purpose of illustrating the general principles of the application. The scope of the application is defined by the appended claims.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or system comprising such elements.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the application are intended to be within the scope of the appended claims.
Claims (7)
1. A cast member cooling system, characterized by: comprises a control valve system, a shell, a filtering mechanism, a cooling liquid collecting tank and a conveyor belt;
the control valve system comprises a multi-way pilot reversing valve, a first cooling mechanism, a second cooling mechanism, a flushing mechanism, a blowing mechanism, a protection liquid injection mechanism and a pressure relief valve; the multi-way pilot reversing valve comprises a circular valve body and a circular rotary valve core; the valve core is rotatably arranged in the valve body, the bottom of the valve core is provided with a valve core air inlet which is connected with a pilot air source, the side part of the valve core is provided with at least one valve core air outlet, and the extending directions of the valve core air inlet and the valve core air outlet are mutually perpendicular; six openings which can be communicated with the valve core air outlet are arranged on the circumference of the valve body, the included angle between the adjacent openings is 60 degrees, and the six openings are a plugging opening, a first air outlet, a second air outlet, a third air outlet, a fourth air outlet and a fifth air outlet respectively; a plugging bolt is arranged at the plugging port; the first air outlet, the second air outlet, the third air outlet, the fourth air outlet and the fifth air outlet are respectively connected with pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protection liquid spraying mechanism through pipelines; pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protection liquid injection mechanism are respectively connected with a pressure release valve through pipelines; the pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism and the protection liquid injection mechanism are all valve pneumatic actuators; the air blowing mechanism comprises a fan, and a pneumatic actuator of the fan is a pneumatic switch;
the inner space of the shell is approximately cylindrical, openings are formed at two ends of the shell, and the conveyor belt is arranged in the middle of the shell and penetrates through the two ends of the shell; the bottom of the shell is provided with a cooling liquid collecting tank, a liquid leakage plate is arranged between the shell and the cooling liquid collecting tank, a filtering mechanism is arranged in the cooling liquid collecting tank, and the cooling liquid collecting tank is connected with a cooling liquid storage device through a cooling liquid recovery pipe; a first spray head, a second spray head, a third spray head, a blowing head and a fourth spray head are sequentially arranged on the inner wall of the shell from one end to the other end;
the outside of the shell is provided with a control valve system, the first cooling mechanism is connected with the cooling liquid storage device through a first liquid inlet pipe, the first liquid inlet pipe is provided with a booster pump, and the first cooling mechanism is connected with the first spray head through a first liquid outlet pipe; the second cooling mechanism is connected with a low-temperature liquid tank through a second liquid inlet pipe, liquid nitrogen or liquid carbon dioxide is filled in the low-temperature liquid tank, and the second cooling mechanism is connected with a second spray head through a second liquid outlet pipe; the flushing mechanism is connected with the cooling liquid storage device through a third liquid inlet pipe, a pressurizing pump is arranged on the third liquid inlet pipe, and the flushing mechanism is connected with a third spray head through a third liquid outlet pipe; the air blowing mechanism is communicated with the atmosphere through an air inlet pipe, a fan is arranged on the air inlet pipe, and the air blowing mechanism is connected with an air blowing head through an air outlet pipe; the protection liquid injection mechanism is connected with the protection liquid storage device through a fourth liquid inlet pipe, a pressurizing pump is arranged on the fourth liquid inlet pipe, and the protection liquid injection mechanism is connected with a fourth spray head through a fourth liquid outlet pipe.
2. The cast member cooling system of claim 1 wherein: the number of the valve core air outlets is three, and the included angle between the adjacent valve core air outlets is 120 degrees.
3. The cast member cooling system of claim 1 wherein: the conveyor belt is of a hollowed-out belt-shaped structure made of metal materials.
4. The cast member cooling system of claim 1 wherein: the shell is divided into five groups of spaces, namely a first space, a second space, a third space, a fourth space and a fifth space, by the annular partition plates.
5. The casting cooling system of claim 4, wherein: three groups of first spray heads, three groups of second spray heads, three groups of third spray heads, three groups of blowing heads and three groups of fourth spray heads are respectively arranged in the first space, the second space, the third space, the fourth space and the fifth space, and the three groups of first spray heads, the three groups of second spray heads, the three groups of third spray heads, the three groups of blowing heads and the three groups of fourth spray heads are respectively arranged in an isosceles triangle shape in the inner circumferential direction of the shell.
6. The cast member cooling system of claim 1 wherein: the second annular partition plate, the third annular partition plate and the fourth annular partition plate are respectively arranged between every two adjacent second spray heads, every two adjacent third spray heads, every two adjacent fourth spray heads, the four groups of spaces are divided by the annular partition plates, and the first spray heads and the second spray heads are located in the same space.
7. A method of cooling a cast part, comprising: cooling of the cast part by the cast part cooling system according to any one of claims 1 to 6, comprising the specific steps of:
s1, placing casting parts on a conveyor belt, wherein adjacent casting parts keep a preset interval;
s2, when the casting piece is conveyed to the first nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the first air outlet, the first cooling mechanism is opened for primary cooling, after the primary cooling is finished, the pressure release valve is opened for releasing pressure of an actuator of the first cooling mechanism, and the first cooling mechanism is closed;
s3, when the casting piece is conveyed to the second nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the second air outlet, the second cooling mechanism is opened for secondary cooling, and after the second cooling mechanism is completed, the pressure release valve is opened for pressure release of an actuator of the second cooling mechanism;
s4, when the casting piece is conveyed to the third nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the third air outlet, the flushing mechanism is opened to flush and clean the casting piece, and after the flushing is completed, the pressure release valve is opened to release pressure of an actuator of the flushing mechanism;
s5, when the casting piece is conveyed to the blowing head, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the fourth air outlet, the fan is opened, moisture on the surface of the casting piece is dried, and after the moisture is dried, the pressure release valve is opened to release pressure on an actuator of the blowing mechanism;
s6, when the casting piece is conveyed to the fourth nozzle, the multi-way pilot reversing valve is regulated to enable the valve core air outlet to be communicated with the fifth air outlet, the protection liquid spraying mechanism is opened, protection liquid is sprayed on the surface of the casting piece, and after the casting piece is finished, the pressure release valve is opened to release pressure of an actuator of the protection liquid spraying mechanism;
s7: when the next cast member enters the housing, the operations of steps S2-S6 are repeated.
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| CN114799134A (en) | 2022-07-29 |
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