Cooling and shaping device for lost foam casting

Abstract

The utility model relates to the technical field of molds, in particular to an evanescent mode casting cooling and shaping device which comprises a dry sand heat conduction box, an external water passing tank is fixedly installed outside the dry sand heat conduction box, the top of the dry sand heat conduction box is communicated with the outside, and a water passing cavity is arranged between the dry sand heat conduction box and the external water passing tank. A plurality of flow guide plates are fixedly installed on the inner wall of the water passing cavity, a flowing gap is formed between every two adjacent flow guide plates, a plurality of bottom heat conduction cones are fixedly installed on the bottom wall of the dry sand heat conduction box, each bottom heat conduction cone is of a hollow structure, and the bottoms of the bottom heat conduction cones communicate with the water passing cavity; a fixing pipe communicated with the water passing cavity is fixedly installed on a box body on one side of the external water passing box, and an external flow pipe communicated with the water passing cavity is fixedly installed on a box body on the other side of the external water passing box. The cooling device has a good cooling effect, and the production efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, concretely, relate to lost foam casting cooling and shaping device. BACKGROUND

[0002] The lost foam casting technology is widely applied in the modern foundry industry owing to its remarkable advantages such as no need of stripping, high casting precision and good surface quality, and cooling and shaping is a crucial link in the production process of lost foam casting, and its effect directly influences the dimensional accuracy, internal structure and mechanical properties of castings, and effective cooling can improve production efficiency, such as shortening cooling time, and can quickly realize the taking-out operation of castings, achieving the effect of improving production efficiency.

[0003] At present, the traditional lost foam casting cooling and shaping mode mainly adopts natural cooling, and natural cooling needs to rely on the castings to dissipate heat to the air, to achieve the effect of cooling and heat dissipation, but natural cooling takes too long time, seriously affecting production efficiency, and part of the cooling mode adopts air cooling, and in the air cooling process, the castings are filled in dry sand, and the dry sand causes shielding to the castings, so that air cooling cannot be efficiently and normally carried out, and at the same time, the wind blowing is also easy to blow the internal dry sand, influencing the shaping of the castings, and along with the continuous improvement of the quality and production efficiency requirements of the market on the lost foam castings, it has important practical significance to research and develop a lost foam casting cooling and shaping device capable of realizing uniform cooling. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing lost foam casting cooling and shaping device to solve the defects in the prior art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme:

[0006] The lost foam casting cooling and shaping device comprises a dry sand heat conduction box, an outer water tank is fixedly installed outside the dry sand heat conduction box, the top of the dry sand heat conduction box is connected with the outside, a water passing cavity is arranged between the dry sand heat conduction box and the outer water tank, a plurality of flow guide plates are fixedly installed on the inner wall of the water passing cavity, flow gaps are arranged between every two adjacent flow guide plates, a plurality of bottom heat conduction cones are fixedly installed on the bottom wall of the dry sand heat conduction box, the bottom heat conduction cone is a hollow structure, the bottom of the bottom heat conduction cone is connected with the water passing cavity, a fixed pipe connected with the water passing cavity is fixedly installed on one side tank body of the outer water tank, and an outer flow pipe connected with the water passing cavity is fixedly installed on the tank body of the other side of the outer water tank.

[0007] As a preferred, the water outlet end of the fixed pipe is located at the position close to the bottom of the outer water tank, and the water inlet end of the outer flow pipe is located at the position close to the top of the outer water tank.

[0008] The water flows from the bottom, fills the whole water passage chamber and then is discharged outward, so that the heat exchange and cooling effect are improved.

[0009] Preferably, a dry sand cushion layer is arranged in the dry sand heat conducting box, and a lost foam is embedded in the dry sand cushion layer.

[0010] Preferably, a plurality of support legs are fixedly installed at the bottom of the outer water passage box and arranged vertically, and a support base is fixedly installed at the bottom end of the support leg.

[0011] Preferably, a conveying pump is arranged on one side of the outer water passage box, and the conveying pump is used for water conveying operation on the fixed pipe.

[0012] Preferably, a water inlet pipe is fixedly installed at the water inlet end of the conveying pump, a water outlet pipe is fixedly installed at the water outlet end of the conveying pump, a first hose is fixedly installed at the end of the water outlet pipe, and the first hose is flange-connected with the fixed pipe.

[0013] Preferably, a second hose is fixedly installed at the end of the outer flow pipe, and a conveying pipe is fixedly installed at the end of the second hose.

[0014] Preferably, a spiral heat exchange pipe which is arranged spirally and used for heat exchange operation is arranged in the conveying pipe, a water outlet pipe is fixedly installed at the water inlet end of the spiral heat exchange pipe, and a flange pipe is fixedly installed at the water outlet end of the spiral heat exchange pipe, and the water outlet pipe and the flange pipe both pass through the conveying pipe.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The utility model discloses a dry sand heat conducting box cooling device, which comprises an outer water passage box, a water passage chamber, a dry sand heat conducting box, a guide plate and a bottom heat conducting cone.

[0017] 2. The utility model discloses a dry sand heat conducting box cooling device, which comprises an outer water passage box, a water passage chamber, a dry sand heat conducting box, a guide plate and a bottom heat conducting cone.

[0018] 3. The utility model discloses a spiral heat exchange pipe is arranged in the conveying pipe, carries out secondary heat exchange to the hot water after cooling casting piece, realizes the recycling of heat, reduces the use cost of cooling water, guarantees the cooling effect, reaches the effect of energy saving and environmental protection, reduces production cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is whole structure schematic diagram of the utility model;

[0020] Figure 2 It is one of cross section view of outer water tank of the utility model;

[0021] Figure 3 It is two of cross section view of outer water tank of the utility model;

[0022] The meaning of each reference numeral in the drawing is as follows:

[0023] 1, dry sand heat conduction tank;10, dry sand cushion layer;11, lost foam;12, outer water tank;121, water chamber;13, guide plate;131, flow gap;14, bottom heat conduction cone;15, support leg;151, support base;

[0024] 2, conveying pump;20, water inlet pipe;21, water outlet pipe;22, first hose;23, fixed pipe;

[0025] 3, outer flow pipe;30, second hose;31, conveying pipe;32, spiral heat exchange pipe;33, flange pipe;34, outer pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Please refer to Figures 1-3 The utility model provides a technical scheme: lost foam casting cooling and shaping device, dry sand heat conduction tank 1 is externally fixedly installed with outer water tank 12, the top of dry sand heat conduction tank 1 is communicated with the outside, dry sand heat conduction tank 1 is laid with dry sand cushion layer 10, and dry sand cushion layer 10 is buried with lost foam 11, which realizes normal pouring operation.

[0028] In this embodiment, the dry sand heat conduction box 1 and the outer water tank 12 are provided with a water passing chamber 121, a plurality of guide plates 13 are fixedly installed on the inner wall of the water passing chamber 121, flow gaps 131 are arranged between two adjacent guide plates 13, a fixed pipe 23 communicating with the water passing chamber 121 is fixedly installed on one side of the outer water tank 12, and an outer flow pipe 3 communicating with the water passing chamber 121 is fixedly installed on the other side of the outer water tank 12, so that the circulating water can flow around the dry sand heat conduction box 1 to form an efficient heat exchange space, greatly shortening the cooling time of the castings compared with the traditional natural cooling, and significantly improving the production efficiency; at the same time, the guide plates 13 and the flow gaps 131 on the inner wall of the water passing chamber 121 effectively guide the uniform distribution of water flow, and enhance the uniformity of cooling, preventing the castings from deforming, cracking and other defects.

[0029] As shown in Figure 2 , a plurality of bottom heat conduction cones 14 are fixedly installed on the bottom wall of the dry sand heat conduction box 1, the bottom heat conduction cone 14 is a hollow structure, the bottom of the bottom heat conduction cone 14 is communicated with the water passing chamber 121, and the heat of the bottom of the dry sand heat conduction box 1 can be quickly conducted to the circulating water in the water passing chamber 121, so as to strengthen the heat dissipation effect of the bottom, cooperate with the overall cooling of the water passing chamber 121, realize the uniform cooling of the castings in all directions, and ensure the size accuracy and internal quality of the castings.

[0030] As shown in Figure 1 , the water outlet end of the fixed pipe 23 is located at the position close to the bottom of the outer water tank 12, and the water inlet end of the outer flow pipe 3 is located at the position close to the top of the outer water tank 12, so that the water flow can enter from the bottom, and then be discharged from the top after completely filling the water passing chamber 121, fully utilizing the space of the water passing chamber 121, increasing the contact area and contact time of water and the dry sand heat conduction box 1, greatly improving the heat exchange and cooling effect, and ensuring the rapid cooling and setting of the castings.

[0031] As shown in Figure 1 , a plurality of support legs 15 vertically arranged are fixedly installed on the bottom of the outer water tank 12, and a support base 151 is fixedly installed at the bottom end of the support leg 15 to realize stable support operation.

[0032] As shown in Figure 1 , a conveying pump 2 is arranged on one side of the outer water tank 12, the conveying pump 2 is used for water conveying operation of the fixed pipe 23, a water inlet pipe 20 is fixedly installed at the water inlet end of the conveying pump 2, a water outlet pipe 21 is fixedly installed at the water outlet end of the conveying pump 2, a first hose 22 is fixedly installed at the end of the water outlet pipe 21, and the first hose 22 is flange connected with the fixed pipe 23, realizing the circulating conveying of cooling water, ensuring that the cooling water always flows in the water passing chamber 121, maintaining the continuous and stable cooling effect, and guaranteeing the continuity and efficiency of the cooling and setting of the castings

[0033] AsFigure 1 As shown, the end of the outflow pipe 3 is fixedly installed with a second hose 30, the end of the second hose 30 is fixedly installed with a conveying pipe 31, the conveying pipe 31 is provided with a spiral heat exchange pipe 32 in a spiral shape and used for heat exchange operation, the water inlet end of the spiral heat exchange pipe 32 is fixedly installed with an external pipe 34, the water outlet end of the spiral heat exchange pipe 32 is fixedly installed with a flange pipe 33, the external pipe 34 and the flange pipe 33 all pass through the conveying pipe 31, the hot water flowing out of the water passing cavity 121 is subjected to secondary heat exchange, the heat exchange is realized through the water inlet end external pipe 34 and the water outlet end flange pipe 33 of the spiral heat exchange pipe 32, the heat recovery is realized, the use cost of the cooling water is reduced, and the effects of energy saving and environmental protection and reducing production cost are achieved.

[0034] It is worth noting that the end of the conveying pipe 31 is connected with an external water storage container, and the end of the water inlet pipe 20 is also fixedly installed on the external water storage container, so that the water subjected to heat exchange in the conveying pipe 31 can flow into the external water storage container for storage, and the water inlet pipe 20 can also suck water from the external water storage container for cooling use.

[0035] The lost foam casting cooling and shaping device of the utility model in use, first of all, the device is stably placed in the work site through the supporting leg 15 and the supporting base 151, the dry sand cushion layer 10 is laid in the dry sand heat conduction box 1, and the lost foam 11 is buried therein, and the preparation work before pouring is completed.

[0036] Then, the pouring operation is carried out, after the high-temperature metal liquid is injected into the lost foam 11, the conveying pump 2 is started at this time, the cooling water is pumped into the water passing cavity 121 from the fixed pipe 23 through the water inlet pipe 20, the water outlet pipe 21 and the first hose 22, the water flow enters from the bottom of the outer water passing box 12, is uniformly distributed through the flow guide plate 13 and the flow gap 131, flows around the dry sand heat conduction box 1, exchanges heat with the dry sand heat conduction box 1, carries away the heat of the casting, and the bottom heat conduction cone 14 at the bottom of the dry sand heat conduction box 1 rapidly conducts the bottom heat to the circulating water in the water passing cavity 121, realizing omnibearing and uniform cooling.

[0037] The cooled water flows out from the outflow pipe 3, enters the conveying pipe 31 through the second hose 30, is subjected to secondary heat exchange in the spiral heat exchange pipe 32 in the conveying pipe 31, realizes heat exchange through the external pipe 34 and the flange pipe 33, completes heat recovery and utilization, and the water after heat recovery is discharged to the corresponding storage container outside along the end of the conveying pipe 31.

[0038] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A lost foam casting cooling and sizing device comprising a dry sand heat conducting box (1) characterized in that: The outer water passing box (12) is fixedly installed outside the dry sand heat conducting box (1), the top of the dry sand heat conducting box (1) is communicated with the outside, a water passing chamber (121) is arranged between the dry sand heat conducting box (1) and the outer water passing box (12), a plurality of guide plates (13) are fixedly installed on the inner wall of the water passing chamber (121), a flow gap (131) is arranged between every two adjacent guide plates (13), a plurality of bottom heat conducting cones (14) are fixedly installed on the bottom wall of the dry sand heat conducting box (1), the bottom heat conducting cone (14) is a hollow structure, the bottom of the bottom heat conducting cone (14) is communicated with the water passing chamber (121), a fixed pipe (23) communicated with the water passing chamber (121) is fixedly installed on one side of the outer water passing box (12), and an outer flow pipe (3) communicated with the water passing chamber (121) is fixedly installed on the other side of the outer water passing box (12).

2. The lost foam molding cooling and shaping apparatus of claim 1, wherein: The water outlet end of the fixed pipe (23) is located at the position close to the bottom of the outer water passing box (12), and the water inlet end of the outer flow pipe (3) is located at the position close to the top of the outer water passing box (12).

3. The lost foam molding cooling and sizing apparatus of claim 1, wherein: The dry sand heat conducting box (1) is paved with a dry sand paving layer (10), and the dry sand paving layer (10) is embedded with an expendable pattern (11).

4. The lost foam molding cooling and shaping apparatus of claim 1, wherein: A plurality of support legs (15) in vertical arrangement are fixedly installed on the bottom of the outer water passing box (12), and a support base (151) is fixedly installed on the bottom end of the support leg (15).

5. The lost foam molding cooling and shaping apparatus of claim 1, wherein: A conveying pump (2) is arranged on one side of the outer water passing box (12), and the conveying pump (2) is used for water conveying operation of the fixed pipe (23).

6. The lost foam molding cooling and shaping apparatus of claim 5, wherein: A water inlet pipe (20) is fixedly installed on the water inlet end of the conveying pump (2), an outlet pipe (21) is fixedly installed on the water outlet end of the conveying pump (2), a first hose (22) is fixedly installed on the end of the outlet pipe (21), and the first hose (22) is flange connected with the fixed pipe (23).

7. The lost foam molding and cooling apparatus of claim 1, wherein: A second hose (30) is fixedly installed on the end of the outer flow pipe (3), and a conveying pipe (31) is fixedly installed on the end of the second hose (30).

8. The lost foam molding cooling and shaping apparatus of claim 7, wherein: A spiral heat exchange pipe (32) in spiral arrangement and used for heat exchange operation is arranged in the conveying pipe (31), a water outlet pipe (34) is fixedly installed on the water inlet end of the spiral heat exchange pipe (32), and a flange pipe (33) is fixedly installed on the water outlet end of the spiral heat exchange pipe (32), wherein the water outlet pipe (34) and the flange pipe (33) both pass through the conveying pipe (31).

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