CN114799134A - Control valve system, casting cooling system and casting cooling method - Google Patents
Control valve system, casting cooling system and casting cooling method Download PDFInfo
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- CN114799134A CN114799134A CN202210447301.3A CN202210447301A CN114799134A CN 114799134 A CN114799134 A CN 114799134A CN 202210447301 A CN202210447301 A CN 202210447301A CN 114799134 A CN114799134 A CN 114799134A
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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 invention belongs to the technical field of casting, and particularly relates to a control valve system, a casting cooling system and a casting 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 protective liquid injection mechanism and a pressure release valve; the invention also provides a casting cooling system and a casting cooling method, wherein the casting cooling system has a plurality of operation processes, a stepped cooling mode of water and liquid nitrogen is adopted, and 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 the casting parts to carry out the streamlined cooling operation, so that the cooling efficiency of the large-batch casting parts is greatly improved.
Description
Technical Field
The invention 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, a casting is directly placed into cooling liquid (the cooling liquid generally adopts water) from a casting device for cooling through a manual operation machine, the method is low in cost and simple in operation, but has the great defect that the casting has a high temperature at the beginning of casting forming, is directly placed into water, the surface of the casting is in direct contact with a large amount of water, the surface temperature of the casting is rapidly reduced (for example, the surface temperature is instantly reduced to 100 ℃ from 1200 ℃), but the temperature is still high inside the casting due to the fact that temperature conduction needs a certain time, so that cracks and even explosion of the casting are easily caused due to uneven cooling, products are scrapped, even personnel are injured, and the efficiency of a manual operation cooling mode is low.
Secondly, in some casting cooling apparatuses, although the cooling liquid is sprayed, the cooling liquid is sprayed only in one direction, the casting is also cooled unevenly, cracks are generated, 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 putting the casting into water. And, by adopting the water spraying mode, when the temperature of the casting is higher than 100 ℃, the temperature difference between the cooling water and the casting is large, the water is directly gasified when meeting the casting, and the cooling efficiency is higher, but when the temperature of the casting is lower than 100 ℃, the cooling efficiency of the cooling water spraying is greatly reduced (for example, 2 minutes is needed for reducing the temperature of the casting from 1200 ℃ to 100 ℃ by adopting the water spraying at 30 ℃, but more than 10 minutes is needed for reducing the temperature of the casting from 100 ℃ to 50 ℃), which seriously influences the working progress of cooling the casting. Moreover, after the water is sprayed for cooling, a large amount of water is evaporated, and the cooling effect of the water which is not evaporated is reduced due to the high temperature, which leads to a large amount of water resource waste.
In current casting cooling arrangement, adopt electrical equipment to control, electrical equipment's position is close to cooling arrangement and even is located inside the cooling arrangement, because the high temperature influence of casting, will shorten electrical equipment's life-span greatly to influence the stability of cooling arrangement operation.
Disclosure of Invention
The invention aims to solve the problems of poor cooling effect, low efficiency, waste of water resources and the like of a casting in the prior art, and provides a control valve system, a casting cooling system and a casting cooling method.
In order to achieve the purpose, the invention 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, the valve core air inlet 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 extension directions of the valve core air inlet and the valve core air outlet are mutually vertical; six openings which can be communicated with the air outlet of the valve core are arranged on the valve body in the circumferential direction, the included angle between every two 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 a pneumatic actuator of the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protective 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 protective liquid spraying mechanism are respectively connected with the pressure release valves through pipelines.
Preferably, the pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism and the protective liquid spraying 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 every two adjacent valve core air outlets is 120 degrees.
The invention 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, wherein the control valve system 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 in the 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; a cooling liquid collecting tank is arranged at the bottom of the shell, 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; a control valve system is arranged outside the shell, the first cooling mechanism is connected with the cooling liquid storage device through a first liquid inlet pipe, a pressure pump is arranged on the first liquid inlet pipe, 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 the 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 the 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 pressure 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 pressure 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 conveyer belt is the fretwork banding structure that metal material preparation formed.
Preferably, a first annular partition plate, a second annular partition plate, a third annular partition plate and a fourth annular partition plate are respectively arranged between every two adjacent first nozzles, second nozzles, third nozzles, blowing heads and fourth nozzles, and the shell is divided into five groups of spaces through the annular partition plates, namely a first space, a second space, a third space, a fourth space and a fifth space in sequence.
Preferably, three groups of first nozzles, three groups of second nozzles, three groups of third nozzles, three groups of blowing heads and three groups of fourth nozzles are arranged in the first space, the second space, the third space, the fourth space and the fifth space respectively, and the three groups of first nozzles, the three groups of second nozzles, the three groups of third nozzles, the three groups of blowing heads and the three groups of fourth nozzles are arranged in an isosceles triangle shape in the inner circumferential direction of the shell respectively.
Preferably, a second annular partition plate, a third annular partition plate and a fourth annular partition plate are respectively arranged between every two adjacent second spray heads, third spray heads, air blowing heads and fourth spray heads, the space is divided into four groups by the annular partition plates, and the first spray heads and the second spray heads are located in the same space.
The invention also provides a casting cooling method, which cools the casting through the casting cooling system and comprises the following specific steps:
s1, placing the castings on the conveyer belt, and keeping the adjacent castings at a preset interval;
s2, when the casting piece is conveyed to the first nozzle, the multi-way pilot reversing valve is adjusted to enable the air outlet of the valve core to be communicated with the first air outlet, the first cooling mechanism is opened to carry out first cooling, and after the first cooling mechanism is finished, the pressure relief valve is opened to relieve the pressure of the 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 adjusted to enable the air outlet of the valve core to be communicated with the second air outlet, the second cooling mechanism is opened to carry out second cooling, and after the second cooling is finished, the pressure relief valve is opened to carry out pressure relief on the actuator of the second cooling mechanism;
s4, when the casting piece is conveyed to a third spray head, the multi-way pilot reversing valve is adjusted to enable the air outlet of the valve core to be communicated with the third air outlet, the flushing mechanism is opened to flush and clean the casting piece, and after the flushing mechanism is finished, the pressure relief valve is opened to relieve the pressure of an actuator of the flushing mechanism;
s5, when the casting is conveyed to the blowing head, adjusting the multi-way pilot reversing valve to enable the air outlet of the valve core to be communicated with the fourth air outlet, opening the fan to blow dry moisture on the surface of the casting, and opening the pressure release valve to release pressure of an actuator of the blowing mechanism after the moisture is blown dry;
s6, when the casting is conveyed to the fourth nozzle, adjusting the multi-way pilot reversing valve to communicate the valve core air outlet with the fifth air outlet, opening the protective liquid injection mechanism, spraying the protective liquid on the surface of the casting, and opening the pressure release valve to release the pressure of the actuator of the protective liquid injection mechanism after the completion;
s7: when the next cast member enters the housing, the operations of steps S2-S6 are repeated.
The invention provides a control valve system, a casting cooling system and a casting cooling method, which have the beneficial effects that:
1. through the remote operation of the multi-way pilot reversing valve, the cooling system can be farther away from a high-temperature casting part cooling system, the exposure of personnel in a high-temperature environment is avoided, and the working environment of the operators is improved; the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protective liquid spraying mechanism are simultaneously controlled 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 part 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 mechanisms are uniformly arranged respectively, so that the operation treatment can be fully and uniformly carried out; the whole cooling process adopts conveyor belt streamlined treatment, and the efficiency is high.
3. The cooling process adopts a stepped cooling mode, the cooling effect is good, and the efficiency is high. The first cooling mechanism is cooled by water spraying, the cooling is uniform, the temperature is milder than that of a casting piece directly immersed in water, cracks are not easy to generate, the casting piece can be quickly reduced to about 100 ℃ from more than 1200 ℃ by water spraying cooling, when the temperature of the casting piece is reduced to below 100 ℃, the water cooling efficiency is greatly reduced, at the moment, the casting piece is cooled for the second time by liquefied nitrogen or liquefied carbon dioxide, the temperature of the casting piece is quickly reduced to 30-50 ℃ from 100 ℃, the temperature is close to the normal temperature, the cooling mechanism is more friendly to workers, and the cooling efficiency of the casting piece is greatly improved by a stepped cooling mode of different mediums for two times.
4. Liquefied nitrogen or liquefied carbon dioxide can also make the inside ambient temperature of casing decline, help the liquefaction of vapor, improve the rate of recovery of vapor, have reduced the waste of water resource.
5. The surface of the casting part is provided with a plurality of chip particles, after the casting part is cooled for the first time and the second time, the surface of the casting part is cleaned by spraying water through a spray head, the surface of the casting part is cleaner, after the surface of the casting part is cleaned, the surface moisture of the casting part is dried by a fan, and the clean and dry surface is beneficial to the subsequent covering of protective oil; the protective oil is sprayed on the surface of the casting, so that the casting can be protected from corrosion.
6. The cooling liquid collecting tank is arranged in the casting part cooling system, so that the cooling liquid can be recycled, and the waste of resources is reduced; the whole course adopts the mode operation of pilot valve gas accuse, compares in automatically controlled stability higher, and only the fan is the consumer, and the cooling system outside is located to the fan, is connected with the casing through the air-supply line, does not receive the temperature influence of cast member.
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 application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
FIG. 1 is a first schematic structural diagram of a multi-way pilot operated directional control valve of the present invention;
FIG. 2 is a second schematic structural view of the multi-way pilot operated directional control valve of the present invention;
FIG. 3 is a first schematic structural view of another embodiment of the multi-way pilot operated directional control valve of the present invention;
FIG. 4 is a second schematic structural view of another embodiment of the multi-way pilot operated directional control valve of the present invention;
FIG. 5 is a schematic structural view of a casting cooling system of the present invention;
FIG. 6 is a schematic structural view of another embodiment of the casting cooling system of the present invention;
fig. 7 is a cross-sectional view at a broken line a of fig. 5 and 6.
In the figure: the multi-way pilot-operated directional control valve comprises a multi-way pilot-operated directional control valve 1, a valve body 101, a rotary valve core 102, a blocking port 1011, a first air outlet 1012, a second air outlet 1013, a third air outlet 1014, a fourth air outlet 1015, a fifth air outlet 1016, a valve core air inlet 1021 and a valve core air outlet 1022; the first cooling mechanism 2, a first liquid inlet pipe 201, a first liquid outlet pipe 202 and a first spray head 203; a 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 device comprises a blowing mechanism 5, an air inlet pipe 501, an air outlet pipe 502 and a blowing head 503; the protective liquid injection mechanism 6, a fourth liquid inlet pipe 601, a fourth liquid outlet pipe 602 and a fourth nozzle 603; the device comprises a shell 7, a leakage plate 71, a filtering mechanism 8, a cooling liquid collecting tank 9, a cooling liquid recovery pipe 901, a conveyor belt 10 and a casting part 11.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
The 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 protective liquid spraying mechanism 6 and a pressure relief valve (not shown in the figure); the multi-way pilot-operated directional control valve 1 comprises a circular valve body 101 and a circular rotary valve core 102; the valve core 102 is rotatably installed inside the valve body 101, the bottom of the valve core 102 is provided with a valve core air inlet 1021, the valve core air inlet 1021 is connected with a pilot gas source, the side part of the valve core 102 is provided with at least one valve core air outlet 1022, and the extension 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 valve body in the circumferential direction, the included angle between the adjacent openings is 60 degrees, and the six openings are a blocking opening 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 the 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 through pipelines; the 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 the pressure release valves 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 protective liquid ejecting mechanism 6 can be stopped.
The first cooling mechanism 2, the second cooling mechanism 3, the flushing mechanism 4 and the protective liquid injection mechanism 6 are valves which can be opened and closed under the control of a multi-way pilot reversing valve and a pressure relief valve, and a plurality of valves can be operated simultaneously, so that the operation is more convenient; the blowing mechanism 5 comprises a fan, a pneumatic actuator of the fan 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 gas outlet 1022 is communicated with the first gas outlet 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 spool air outlet 1022 and the first air outlet 1012 are not communicated, the air pressure in the pneumatic actuator of the first cooling mechanism 2 can be discharged through the relief valve, so that the first cooling mechanism 2 stops operating; further, the second cooling mechanism 3, the flushing mechanism 4, the blowing mechanism 5, or the protective liquid spraying mechanism 6 has the same operation principle as the first cooling mechanism 2.
Referring to fig. 3 and 4, the number of the valve core air outlets 1022 is three, and an included angle between adjacent valve core air outlets 1022 is 120 °. During the rotation of the valve core 102, two pipeline connection states are provided, the first connection state is that the valve core air outlet 1022 is simultaneously communicated with the blocking 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. Through setting up three case gas outlets 1022, can carry out three operation process simultaneously, in cast member mass production and cooling process, can improve the refrigerated work efficiency of cast member greatly.
Referring to fig. 5, a casting cooling system includes a control valve system, a housing 7, a filtering 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 opened, the conveyor belt 10 is arranged in the middle of the shell 7 and penetrates through two ends of the shell 7, and the conveyor belt 10 conveys the high-temperature casting parts into a cooling system and then conveys the high-temperature casting parts out after cooling; the conveyor belt 10 is a hollow-out belt-shaped structure made of metal materials, so that the conveyor belt can bear the high temperature of a casting part, meanwhile, the contact area between the conveyor belt 10 and a casting part support is reduced, and the conveyor belt is beneficial to full contact of cooling liquid with the high-temperature casting part; a cooling liquid collecting tank 9 is arranged at the bottom of the shell 7, 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 adopt water; a first spray nozzle 203, a second spray nozzle 303, a third spray nozzle 403, a blowing head 503 and a fourth spray nozzle 603 are sequentially arranged on the inner wall of the shell 7 from right to left; a control valve system is arranged outside the shell 7, the first cooling mechanism 2 is connected with a cooling liquid storage device through a first liquid inlet pipe 201, a pressure 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 pressure 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 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 blowing mechanism 5 is connected with a 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 pressure 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, a first circular ring-shaped partition plate, a second circular ring-shaped partition plate, a third circular ring-shaped partition plate and a fourth circular ring-shaped partition plate are respectively arranged between every two adjacent first nozzles 203, second nozzles 303, third nozzles 403, blowing heads 503 and fourth nozzles 603, the shell 7 is divided into five groups of spaces through the circular ring-shaped partition plates, the five groups of spaces are sequentially a first space, a second space, a third space, a fourth space and a fifth space, and mutual interference of different spaces can be reduced through the partition plates. Install three first shower nozzles 203 of group in the first space, three first shower nozzles 203 of group are isosceles triangle and arrange on the inside circumference of casing 7, can make the more comprehensive cast member that covers of first shower nozzle 203 like this for the cooling is more comprehensive even, can not produce the crack because of the cooling is inhomogeneous. Similarly, in order to achieve 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 also 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 on the inner circumference of the casing 7 in an isosceles triangle shape.
Second embodiment: referring to fig. 6, the difference with respect to the first embodiment is that the annular partition between the first space and the second space is removed, so that on the inner wall of the casing 7, from right to left, a second annular partition, a third annular partition and a fourth annular partition are respectively arranged between every two adjacent second nozzles 303, third nozzles 403, blowing heads 503 and fourth nozzles 603, and are divided into four groups of spaces by the annular partitions, and the first nozzles 203 and the second nozzles 303 are located in the same space. The purpose of this is that when the high-temperature casting enters the housing 7, the first nozzle 203 sprays on the surface of the high-temperature casting, and a large amount of water vapor is generated by vaporization, and the water vapor overflows through the opening of the housing 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 can spray liquid nitrogen or liquid carbon dioxide to further cool the surface of the casting, and simultaneously, the liquid nitrogen or the liquid carbon dioxide is gasified after being heated, but the temperature of the liquid nitrogen or the liquid carbon dioxide is lower than that of water vapor, so that the water vapor in the shell 7 can be liquefied, and the water vapor flows into the cooling water collecting tank 9 at the bottom of the shell 7 to be recovered, and the waste of water resources is reduced.
The third embodiment: a casting cooling method is used for cooling a casting through a casting cooling system, and comprises the following specific steps:
s1, placing the casting parts 11 on the conveyor belt 10, and keeping the adjacent casting parts 11 at a preset distance;
s2, when the casting part 11 is conveyed to the first nozzle 203, adjusting the multi-way pilot reversing valve 1 to enable the valve core gas outlet 1022 to be communicated with the first gas outlet 1012, opening the first cooling mechanism 2 for first cooling, opening the pressure release valve to release pressure of the actuator of the first cooling mechanism 2 after the first cooling mechanism 2 is cooled, and closing the first cooling mechanism 2;
s3, when the casting part 11 is conveyed to the second spray head 303, adjusting the multi-way pilot reversing valve 1 to enable the valve core gas outlet 1022 to be communicated with the second gas outlet 1013, opening the second cooling mechanism 3 for secondary cooling, and after the secondary cooling is finished, opening the pressure release valve to release the pressure of the actuator of the second cooling mechanism 3;
s4, when the casting part 11 is conveyed to the third spray head 403, adjusting the multi-way pilot reversing valve 1 to enable the valve core air outlet 1022 to be communicated with the third air outlet 1014, opening the flushing mechanism 4 to flush and clean the casting part, and opening the pressure relief valve to relieve the pressure of an actuator of the flushing mechanism 4 after the flushing mechanism 4 is finished;
s5, when the casting part 11 is conveyed to the blowing head 503, adjusting the multi-way pilot reversing valve 1 to enable the valve core air outlet 1022 to be communicated with the fourth air outlet 1015, opening the fan to blow dry the moisture on the surface of the casting part, and opening the pressure release valve to release the pressure of the actuator of the blowing mechanism 5 after the moisture is blown dry;
s6, when the casting 11 is conveyed to the fourth nozzle 603, adjusting the multi-way pilot reversing valve 1 to enable the valve core air outlet 1022 to be communicated with the fifth air outlet 1016, opening the protective liquid injection mechanism 6, spraying the protective liquid on the surface of the casting, and opening the pressure release valve to release the pressure of the actuator of the protective liquid injection mechanism 6 after the completion;
s7: when the next cast product 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 member does not enter the step, the relief valve is opened to relieve the pressure of the corresponding actuator, thereby closing the mechanism in the step. For example, when the casting 11 enters the second space from the first space, the next casting does not reach the first space, and at this time, the first cooling mechanism 2 can be closed by the pressure relief valve, so that waste of resources is avoided.
As used in the specification and in the claims, certain terms are used to refer to particular components. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of 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 good 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 good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. 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, the valve core air inlet 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 extension directions of the valve core air inlet and the valve core air outlet are mutually vertical; six openings which can be communicated with the air outlet of the valve core are arranged on the valve body in the circumferential direction, the included angle between every two 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 a pneumatic actuator of the first cooling mechanism, the second cooling mechanism, the flushing mechanism, the blowing mechanism and the protective 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 protective liquid spraying mechanism are respectively connected with the pressure release valves through pipelines.
2. The control valve system of claim 1, wherein: the pneumatic actuators of the first cooling mechanism, the second cooling mechanism, the flushing mechanism and the protective liquid spraying mechanism are all valve pneumatic actuators; the blowing mechanism comprises a fan, and the pneumatic actuator of the blowing mechanism is a pneumatic switch.
3. The control valve 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.
4. A casting cooling system comprising a control valve system according to any of claims 1-3, characterized in that: the device also comprises a shell, a filtering mechanism, a cooling liquid collecting tank and a conveying belt; the inner space of the shell is approximately cylindrical, openings are formed in the 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; a cooling liquid collecting tank is arranged at the bottom of the shell, 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; a control valve system is arranged outside the shell, the first cooling mechanism is connected with the cooling liquid storage device through a first liquid inlet pipe, a pressure pump is arranged on the first liquid inlet pipe, 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 the 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 the 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 pressure 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 pressure 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.
5. The casting cooling system of claim 4, wherein: the conveyer belt is the fretwork banding structure that the metal material preparation formed.
6. The casting cooling system of claim 4, wherein: a first annular partition plate, a second annular partition plate, a third annular partition plate and a fourth annular partition plate are respectively arranged between every two adjacent first nozzles, second nozzles, third nozzles, air blowing heads and fourth nozzles, and the shell is divided into five groups of spaces through the annular partition plates, namely a first space, a second space, a third space, a fourth space and a fifth space in sequence.
7. The casting cooling system of claim 6, wherein: three groups of first nozzles, three groups of second nozzles, three groups of third nozzles, three groups of blowing heads and three groups of fourth nozzles 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 nozzles, the three groups of second nozzles, the three groups of third nozzles, the three groups of blowing heads and the three groups of fourth nozzles are respectively arranged in an isosceles triangle shape in the inner circumferential direction of the shell.
8. The casting cooling system of claim 4, wherein: a second annular partition plate, a third annular partition plate and a fourth annular partition plate are respectively arranged between every two adjacent second spray heads, third spray heads, air blowing heads and fourth spray heads, the space is divided into four groups of spaces through the annular partition plates, and the first spray heads and the second spray heads are located in the same space.
9. A method of cooling a casting, comprising: cooling of the casting by the casting cooling system of any one of claims 4 to 8, comprising the steps of:
s1, placing the castings on the conveyer belt, and keeping the adjacent castings at a preset interval;
s2, when the casting piece is conveyed to the first nozzle, the multi-way pilot reversing valve is adjusted to enable the air outlet of the valve core to be communicated with the first air outlet, the first cooling mechanism is opened to carry out first cooling, and after the first cooling mechanism is finished, the pressure relief valve is opened to relieve the pressure of the 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 adjusted to enable the air outlet of the valve core to be communicated with the second air outlet, the second cooling mechanism is opened to carry out second cooling, and after the second cooling is finished, the pressure relief valve is opened to carry out pressure relief on the actuator of the second cooling mechanism;
s4, when the casting piece is conveyed to a third spray head, the multi-way pilot reversing valve is adjusted to enable the air outlet of the valve core to be communicated with the third air outlet, the flushing mechanism is opened to flush and clean the casting piece, and after the flushing mechanism is finished, the pressure relief valve is opened to relieve the pressure of an actuator of the flushing mechanism;
s5, when the casting is conveyed to the blowing head, adjusting the multi-way pilot reversing valve to enable the air outlet of the valve core to be communicated with the fourth air outlet, opening the fan to blow dry moisture on the surface of the casting, and opening the pressure release valve to release pressure of an actuator of the blowing mechanism after the moisture is blown dry;
s6, when the casting piece is conveyed to the fourth nozzle, the multi-way pilot reversing valve is adjusted to enable the air outlet of the valve core to be communicated with the fifth air outlet, the protective liquid injection mechanism is opened, protective liquid is sprayed on the surface of the casting piece, and after the protective liquid injection mechanism is opened, the pressure relief valve is opened to relieve the pressure of an actuator of the protective liquid injection mechanism;
s7: when the next cast member enters the housing, the operations of steps S2-S6 are repeated.
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| CN114799134B (en) | 2023-10-20 |
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