Constant temperature device for casting machine

Abstract

The utility model discloses a constant temperature device for a casting machine, which comprises a heat preservation box, a roundabout flow channel, a water supply mechanism, a recovery mechanism, an air convection mechanism and a temperature sensor, the bottom of the heat preservation box is open, the heat preservation box can be covered on the top surface of a machine table of the casting machine in a sealing manner, and box doors capable of being opened are arranged on four side walls of the heat preservation box. A top plate of the heat preservation box is a hollow plate, the bottom face of the top plate is a heat conductor, and a water inlet and a water outlet are formed in the top plate. The circuitous runner is arranged in the top plate and is connected between the water inlet and the water outlet; the water supply mechanism is connected with the water inlet through a water pipe and used for supplying water to the circuitous runner. The recycling mechanism is connected with the water outlet through a water pipe; the air convection mechanism is arranged in the heat preservation box and used for driving air in the heat preservation box to convect up and down. According to the constant temperature device for the casting machine, the constant temperature of the casting machine can be kept to a certain extent, and therefore the casting quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a constant temperature device for a casting machine. Background Art

[0002] Low-pressure casting refers to a casting method in which the mold is generally placed above a sealed crucible, compressed air is introduced into the crucible, low pressure is created on the surface of the molten metal, the molten metal rises from the riser to fill the mold and control solidification. This casting method has good shrinkage compensation, dense casting structure, and is easy to cast large, thin-walled and complex castings. No riser is required, and the metal utilization rate reaches 95%. It is pollution-free and easy to automate.

[0003] However, low-pressure casting is greatly affected by environmental changes. When the ambient temperature changes greatly, it is easy to cause shrinkage of the internal structure of the casting; especially in early winter, the temperature difference between morning and evening is large, with the maximum temperature difference of about 15-20 degrees. The scrap rate of castings increases by about 2% compared with summer, mainly due to cold shut and insufficient pouring caused by low temperature. In order to solve the increase in the scrap rate of castings caused by the large temperature difference in low-pressure casting, a casting machine constant temperature device is urgently needed to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a constant temperature device for a casting machine, which can solve the problem of increased scrap rate of castings caused by large temperature differences in the above-mentioned low-pressure casting.

[0005] In order to achieve the above object, the utility model is implemented through the following technical scheme: a constant temperature device for a casting machine, comprising:

[0006] An insulation box, the bottom of which is open, a sealable cover of which is arranged on the top surface of the casting machine, four side walls of which are provided with openable box doors, a top plate of which is a hollow plate, the bottom surface of which is a heat conductor, and a water inlet and a water outlet;

[0007] A circuitous flow channel is arranged in the top plate and connected between the water inlet and the water outlet;

[0008] A water supply mechanism, connected to the water inlet through a water pipe, for supplying water to the circuitous flow channel;

[0009] A recovery mechanism connected to the water outlet via a water pipe;

[0010] An air convection mechanism, disposed in the heat preservation box, for driving the air in the heat preservation box to convect upward and downward; and

[0011] The temperature sensor is arranged in the thermal insulation box.

[0012] Furthermore, the circuitous flow channel is disposed in a bilaterally symmetrical manner in the top plate.

[0013] Further, the top plate includes an upper plate and a lower plate sealed and buckled up and down, and a plurality of partition plates are arranged in the top plate, and the plurality of partition plates are arranged in parallel to divide the inner cavity of the top plate into a first flow channel, two second flow channels, two third flow channels, two fourth flow channels and a fifth flow channel, wherein the first flow channel, the two second flow channels, the two third flow channels and the two fourth flow channels are all arranged along the long side direction of the top plate, and the fifth flow channel is arranged along the wide side direction of the top plate;

[0014] The first flow channel is located in the middle, the water inlet is arranged on the upper plate and connected to the water inlet end of the first flow channel, the two second flow channels are symmetrically arranged on both sides of the first flow channel, and the water inlet end of the second flow channel is simultaneously connected to the water outlet end of the first flow channel, the two third flow channels are symmetrically arranged on the outside of the second flow channel, the water inlet ends of the two third flow channels are respectively connected to the water outlet ends of the two second flow channels, the two fourth flow channels are respectively located on the outside of the two third flow channels, and are respectively arranged close to the two side walls of the inner cavity of the top plate; the water inlet ends of the two fourth flow channels are respectively connected to the water outlet ends of the two third flow channels, the fifth flow channel is connected between the water outlet ends of the two fourth flow channels, and is arranged close to the wide side of the top plate, and the water outlet is communicated with the fifth flow channel, thereby forming the detour channel.

[0015] Furthermore, the sum of the interception areas of the two second flow channels is smaller than the interception area of ​​the first flow channel.

[0016] Furthermore, the interception areas of the two third flow channels are greater than the interception area of ​​the first flow channel.

[0017] Furthermore, the sum of the interception areas of the two fourth flow channels is equal to the area of ​​the interception surface of the first flow channel.

[0018] Furthermore, the air convection mechanism includes a plurality of exhaust fans, and the plurality of exhaust fans are evenly spaced and arranged on the bottom surface of the lower plate.

[0019] Furthermore, the door is provided with a transparent window.

[0020] Beneficial effects of the utility model:

[0021] The above-mentioned thermostatic device for the casting machine has a heat preservation box fixed on the top of the casting machine, which seals the workpiece on the casting machine, making it less susceptible to external temperature and keeping the temperature constant within a certain range.

[0022] When in use, the door allows the workpiece to enter and leave the casting machine, and is also convenient for the operator to observe and operate. During use, water of corresponding temperature can be supplied to the circuitous flow channel through the water supply mechanism according to the temperature in the insulation box. Since the top plate is a heat conductor, the insulation box can be heated or cooled, and the temperature of the insulation box can be maintained within a certain range, thereby reducing the impact of the production environment on the temperature field of the low-pressure mold; at the same time, the air convection mechanism is started to make the air in the insulation box convect up and down, further keeping the temperature constant within a range, thereby achieving the purpose of reducing production scrap and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a thermostatic device for a casting machine according to the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of a heat preservation box in a constant temperature device for a casting machine according to the utility model;

[0025] Figure 3 It is a schematic diagram of the structure of a circuitous flow channel in a thermostatic device for a casting machine of the utility model;

[0026] Figure 4 It is a schematic diagram of the arrangement of the air convection mechanism in a thermostatic device for a casting machine of the utility model;

[0027] Reference numerals:

[0028] 1. Casting machine;

[0029] 100, thermal insulation box; 110, water inlet; 120, water outlet; 200, circuitous flow channel; 210, first flow channel; 220, second flow channel; 230, third flow channel; 240, fourth flow channel; 250, fifth flow channel; 300, water supply mechanism; 400, recovery mechanism; 500, air convection mechanism; 510, exhaust fan; 600, temperature sensor. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0031] like Figures 1 to 4 As shown, this embodiment provides a thermostatic device for a casting machine, which includes a heat preservation box 100 , a circuitous flow channel 200 , a water supply mechanism 300 , a recovery mechanism 400 , an air convection mechanism 500 and a temperature sensor 600 .

[0032] Specifically, the bottom of the insulation box 100 is open, and the sealable cover of the insulation box 100 is arranged on the top surface of the casting machine 1, and the four side walls of the insulation box 100 are provided with openable box doors, and the top plate of the insulation box 100 is a hollow plate, and the bottom surface of the top plate is a heat conductor, and the top plate is provided with a water inlet 110 and a water outlet 120.

[0033] The circuitous flow channel 200 is arranged in the top plate and connected to the circuitous flow channel 200 between the water inlet 110 and the water outlet 120. The water supply mechanism 300 is connected to the water inlet 110 through a water pipe, and is used to supply water to the circuitous flow channel 200. The recovery mechanism 400 is connected to the water outlet 120 through a water pipe, and is used to recover the liquid flowing out of the circuitous flow channel 200. The air convection mechanism 500 is arranged in the insulated box 100, and is used to drive the air in the insulated box 100 to convect up and down. The temperature sensor 600 is arranged in the insulated box 100.

[0034] It should be noted that, in the present embodiment, the water supply mechanism 300 is a water supply device with a heating function commonly used in the prior art.

[0035] When using the device, since the heat preservation box 100 is fixed on the top of the casting machine 1, the workpiece on the casting machine 1 is sealed, making it less susceptible to external temperature and keeping the temperature constant within a certain range.

[0036] When in use, the box door facilitates the workpiece to enter and leave the casting machine 1, and is also convenient for the operator to observe and operate. During use, water of corresponding temperature can be supplied to the circuitous flow channel 200 through the water supply mechanism 300 according to the temperature in the insulation box 100. Since the top plate is a heat conductor, the insulation box 100 can be heated or cooled, and the temperature of the insulation box 100 can be maintained within a certain range, thereby reducing the impact of the production environment on the temperature field of the low-pressure mold; at the same time, the air convection mechanism 500 is started to make the air in the insulation box 100 convect up and down, further keeping the temperature constant within a range, thereby achieving the purpose of reducing production scrap and saving production costs.

[0037] In this embodiment, the circuitous flow channel 200 is disposed in a bilaterally symmetrical manner in the top plate. By symmetrically disposing the circuitous flow channel 200, the temperature in the heat preservation box 100 can be further ensured to be uniform.

[0038] Specifically, the top plate includes an upper plate and a lower plate sealed and buckled up and down, and a plurality of partition plates are arranged in the top plate, and the plurality of partition plates are arranged in parallel to divide the inner cavity of the top plate into a first flow channel 210, two second flow channels 220, two third flow channels 230, two fourth flow channels 240 and a fifth flow channel 250. The first flow channel 210, the two second flow channels 220, the two third flow channels 230, and the two fourth flow channels 240 are all arranged along the long side direction of the top plate, and the fifth flow channel 250 is arranged along the wide side direction of the top plate.

[0039] The first flow channel 210 is located in the middle. The water inlet 110 is arranged on the upper plate and connected to the water inlet end of the first flow channel 210. The two second flow channels 220 are symmetrically arranged on both sides of the first flow channel 210, and the water inlet ends of the second flow channels 220 are simultaneously connected to the water outlet ends of the first flow channel 210. The two third flow channels 230 are symmetrically arranged on the outside of the second flow channels 220, and the water inlet ends of the two third flow channels 230 are respectively connected to the water outlet ends of the two second flow channels 220. The two fourth flow channels 240 are respectively located on the outside of the two third flow channels 230, and are respectively arranged against the two side walls of the inner cavity of the top plate, and the water inlet ends of the two fourth flow channels 240 are respectively connected to the water outlet ends of the two third flow channels 230, and the fifth flow channel 250 is connected between the water outlet ends of the two fourth flow channels 240 and is arranged against the wide side of the top plate, and the water outlet 120 is connected to the fifth flow channel 250, thereby forming a circuitous channel.

[0040] As a preferred embodiment, the sum of the interception areas of the two second flow channels 220 is smaller than the interception area of ​​the first flow channel 210. When the water flows from the first flow channel 210 into the second flow channel 220, the water pressure can be increased, thereby increasing the flow rate of the water, so that the water enters the third flow channel 230 as soon as possible. In addition, the interception area of ​​the third flow channel 230 can be made larger than the interception area of ​​the first flow channel 210. When the water comes out of the second flow channel 220, since the interception areas of the two third flow channels 230 are larger than the interception area of ​​the first flow channel 210, the water can be spread out quickly, the heat exchange area can be increased, and thus the heat exchange rate can be increased. Furthermore, the sum of the interception areas of the two fourth flow channels 240 can be made equal to the area of ​​the interception surface of the first flow channel 210, so that the flow rate of the water flowing into the fifth flow channel 250 can be the same as the flow rate of the water flowing into the first flow channel 210, so that the final inflow and outflow speed of the entire water supply mechanism 300 is increased, thereby improving the temperature of the entire device.

[0041] In this embodiment, the air convection mechanism 500 includes a plurality of exhaust fans 510, and the plurality of exhaust fans 510 are evenly spaced and arranged on the bottom surface of the lower plate. In addition, in a specific implementation, transparent windows can be arranged on the box doors to facilitate observation of the internal conditions of the constant temperature box.

[0042] When using the device, since the heat preservation box 100 is fixed on the top of the casting machine 1, the workpiece on the casting machine 1 is sealed, making it less susceptible to external temperature and keeping the temperature constant within a certain range.

[0043] When in use, the box door facilitates the workpiece to enter and leave the casting machine 1, and is also convenient for the operator to observe and operate. During use, water of corresponding temperature can be supplied to the circuitous flow channel 200 through the water supply mechanism 300 according to the temperature in the insulation box 100. Since the top plate is a heat conductor, the insulation box 100 can be heated or cooled, and the temperature of the insulation box 100 can be maintained within a certain range, thereby reducing the impact of the production environment on the temperature field of the low-pressure mold; at the same time, the air convection mechanism 500 is started to make the air in the insulation box 100 convect up and down, further keeping the temperature constant within a range, thereby achieving the purpose of reducing production scrap and saving production costs.

[0044] In addition, since the sum of the interception areas of the two second flow channels 220 is smaller than the interception area of ​​the first flow channel 210, when water flows from the first flow channel 210 into the second flow channel 220, the water pressure can be increased, thereby increasing the water flow rate and allowing the water to enter the third flow channel 230 as quickly as possible.

[0045] Since the interception area of ​​the third flow channel 230 is larger than the interception area of ​​the first flow channel 210, when the water flows out of the second flow channel 220, since the interception areas of the two third flow channels 230 are larger than the interception area of ​​the first flow channel 210, the water can be spread out quickly, increasing the heat exchange area, thereby increasing the heat exchange speed. When the sum of the interception surfaces of the two fourth flow channels 240 is equal to the area of ​​the interception surface of the first flow channel 210, the flow rate of the water flowing into the fifth flow channel 250 can be the same as the water flow into the first flow channel 210, thereby increasing the final inflow and outflow speed of the entire water supply mechanism 300, thereby improving the temperature performance of the entire device.

[0046] Finally, it should be noted that the above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A constant temperature device for a casting machine, characterized in that: include: An insulation box, the bottom of which is open, a sealable cover of which is arranged on the top surface of the casting machine, four side walls of which are provided with openable box doors, a top plate of which is a hollow plate, the bottom surface of which is a heat conductor, and a water inlet and a water outlet; A circuitous flow channel is arranged in the top plate and connected between the water inlet and the water outlet; A water supply mechanism, connected to the water inlet through a water pipe, for supplying water to the circuitous flow channel; A recovery mechanism connected to the water outlet via a water pipe; An air convection mechanism, disposed in the heat preservation box, for driving the air in the heat preservation box to convect upward and downward; and The temperature sensor is arranged in the thermal insulation box.

2. The thermostat for a casting machine according to claim 1, characterized in that: The circuitous flow channel is disposed in a bilaterally symmetrical manner in the top plate.

3. The thermostat for a casting machine according to claim 1, characterized in that: The top plate comprises an upper plate and a lower plate which are sealed and buckled up and down, and a plurality of partition plates are arranged in the top plate, and the plurality of partition plates are arranged in parallel to divide the inner cavity of the top plate into a first flow channel, two second flow channels, two third flow channels, two fourth flow channels and a fifth flow channel, wherein the first flow channel, the two second flow channels, the two third flow channels and the two fourth flow channels are arranged along the long side direction of the top plate, and the fifth flow channel is arranged along the wide side direction of the top plate; The first flow channel is located in the middle, the water inlet is arranged on the upper plate and connected to the water inlet end of the first flow channel, the two second flow channels are symmetrically arranged on both sides of the first flow channel, and the water inlet end of the second flow channel is simultaneously connected to the water outlet end of the first flow channel, the two third flow channels are symmetrically arranged on the outside of the second flow channel, the water inlet ends of the two third flow channels are respectively connected to the water outlet ends of the two second flow channels, the two fourth flow channels are respectively located on the outside of the two third flow channels, and are respectively arranged close to the two side walls of the inner cavity of the top plate; the water inlet ends of the two fourth flow channels are respectively connected to the water outlet ends of the two third flow channels, the fifth flow channel is connected between the water outlet ends of the two fourth flow channels, and is arranged close to the wide side of the top plate, and the water outlet is communicated with the fifth flow channel, thereby forming a detour channel.

4. The thermostat for a casting machine according to claim 3, characterized in that: The sum of the interception areas of the two second flow channels is smaller than the interception area of ​​the first flow channel.

5. The thermostat for a casting machine according to claim 3, characterized in that: The interception areas of the two third flow channels are greater than the interception area of ​​the first flow channel.

6. The thermostat for a casting machine according to claim 3, characterized in that: The sum of the two fourth flow channel interception areas is equal to the area of ​​the first flow channel interception surface.

7. The thermostat for a casting machine according to claim 3, characterized in that: The air convection mechanism comprises a plurality of exhaust fans, and the plurality of exhaust fans are evenly spaced and arranged on the bottom surface of the lower plate.

8. The thermostat for a casting machine according to claim 1, characterized in that: The box doors are all provided with transparent windows.

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