Sprue heat preservation device for low-pressure casting

Abstract

The utility model relates to the technical field of sprue heat preservation, in particular to a sprue heat preservation device for low-pressure casting, which comprises a liquid guide funnel, a heat preservation sprue detachably mounted on the outer side surface of the liquid guide funnel, and a butt joint sealing head detachably mounted on the outer side surface of the bottom of the liquid guide funnel, a liquid pipe arranged on the inner side wall face of the heat preservation pouring gate is fixedly connected to the bottom surface of the liquid guide funnel, and a concentration funnel barrel arranged on the bottom edge position of the liquid guide funnel is fixedly connected to the top edge position of the inner side of the liquid pipe. The residual heat source after flow guiding and transferring can penetrate through the air guiding pipe to guide residual hot air into the liquid guiding funnel, meanwhile, bubbles are used for turning over in the molten steel in the liquid guiding funnel, sticky molten steel in the liquid guiding funnel is turned over and stirred, the molten steel on the outer side of the liquid guiding funnel and the molten steel in the deep position of the liquid guiding funnel are turned over and mixed, and the molten steel in the liquid guiding funnel and the molten steel in the liquid guiding funnel are mixed. In this way, the temperature of the molten steel is kept, and the low-temperature sticky molten steel and the surrounding high-temperature molten steel are effectively mixed and softened.

Description

Technical Field

[0001] The utility model relates to the technical field of gate heat preservation, in particular to a gate heat preservation device for low-pressure casting. Background Art

[0002] Low-pressure casting is an anti-gravity casting method, which means that liquid metal fills the cavity against the gravity direction under the action of external force and solidifies. Since the pressure used is relatively low, it is called low-pressure casting. In low-pressure casting, one or more gates are arranged at the thick and large parts of the casting to complete the filling and feeding of the casting. For castings with multiple hot joints on the same surface, multiple gates need to be arranged.

[0003] A patent with the publication number of CN216065485U discloses a heat preservation gate basin device for low-pressure casting, which includes a gate basin unit detachably connected below the casting mold. A lifting pipe is connected and communicated at the bottom of the gate basin unit, and the lifting pipe is used to convey the externally pressurized molten metal against the gravity direction through the gate basin unit to the casting mold; the gate basin unit includes a gate basin body and a gate basin cover. The gate basin cover is connected above the gate basin body to jointly form a cavity for holding molten metal. In the casting process of the utility model, gas heating is cancelled, reducing energy consumption; the temperature around the mold decreases, making the mold not easy to crack, and the gate basin and the gate basin cover do not deform. The service life of the mold is extended and the consumption of spare parts is reduced. However, when the molten steel is being poured, a large amount of high-temperature gas will be generated inside, and these high-temperature gases will accumulate or escape inside the pouring device, resulting in the problem of waste of high-temperature gas.

[0004] A large amount of high-temperature gas will be generated inside the pouring device by the molten steel, and these high-temperature gases will accumulate or escape inside the pouring device, which will harm the surrounding employees. Moreover, in order to maintain the heat preservation state at the gate, a high-temperature heating device needs to be used to heat the external substances at a high temperature, and then the environment around the gate is heated at a high temperature. This method will increase energy consumption, and the high-temperature gas generated inside the pouring device will also be wasted. Summary of the Utility Model

[0005] Therefore, the technical problem to be solved by the present utility model is to overcome the problem in the prior art that in order to maintain a constant temperature state at the gate, a high-temperature heating device needs to be used to heat the external substances at a high temperature, and then the environment around the gate is heated at a high temperature. This method will increase energy consumption, and the high-temperature gas generated inside the pouring device will also be wasted.

[0006] To solve the above technical problems, the utility model provides a gate heat preservation device for low-pressure casting, which includes a liquid guiding funnel and a heat preservation gate detachably installed on the outer surface of the liquid guiding funnel, and a docking sealing head detachably installed on the outer surface of the bottom of the liquid guiding funnel. A liquid pipe is fixedly connected to the bottom surface of the liquid guiding funnel and is arranged on the inner wall surface of the heat preservation gate. A centralized funnel cylinder is fixedly connected to the inner top edge position of the liquid pipe and is arranged at the bottom edge position of the liquid guiding funnel. A circulating heat absorption copper pipe is fixedly connected to the inner wall surface of the heat preservation gate and wraps around the outer surface of the liquid pipe. One end of the circulating heat absorption copper pipe extends to the outer surface of the heat preservation gate, and two groups of blowers are respectively fixedly installed at both ends of the circulating heat absorption copper pipe. An air suction pipe is fixedly installed on the outer surface of the liquid pipe and at the top edge position of the heat preservation gate, and the other end of the air suction pipe is fixedly connected to the receiving end of the blower.

[0007] In an embodiment of the utility model, two groups of air guiding pipes are fixedly connected to the output end of the blower, and one end of the other group of air guiding pipes is fixedly connected to the outer surface of the liquid guiding funnel.

[0008] In an embodiment of the utility model, the end of the air guiding pipe connected to the liquid guiding funnel extends deep into the inner side of the liquid guiding funnel, and a docking head is detachably installed at one end of the two groups of air guiding pipes.

[0009] In an embodiment of the utility model, a cavity is arranged between the heat preservation gate and the liquid pipe, and the surface of the circulating heat absorption copper pipe is arranged on the inner wall surface of the cavity.

[0010] In an embodiment of the utility model, a clamping ring is fixedly connected to the outer surface of the liquid pipe and at the bottom edge position of the heat preservation gate, and a locking buckle is fixedly connected to the outer surface of the clamping ring.

[0011] In an embodiment of the utility model, the outer surface of the docking sealing head is movably lapped at the bottom edge position of the liquid pipe, and a liquid guiding pipe is fixedly connected to the bottom surface of the docking sealing head.

[0012] In an embodiment of the utility model, a docking sleeve ring is fixedly connected to the outer surface of the docking sealing head.

[0013] In an embodiment of the utility model, the surface of the locking buckle is detachably installed on the inner wall surface of the docking sleeve ring.

[0014] The above technical solution of the utility model has the following advantages compared with the prior art:

[0015] The utility model discloses a pouring gate insulation device for low-pressure casting, which cooperates with a liquid guide funnel to drain the molten steel and inject the molten steel into the interior of a liquid pipe. While draining the molten steel, the concentrated funnel tube on the inner surface of the liquid guide funnel is cooperated to perform preliminary compression on the accumulated molten steel, so as to slow down the flow speed of the molten steel under high-speed flow. At this time, the high-temperature gas generated on the surface of the molten steel is accumulated and collected through the gap left between the outer surface of the concentrated funnel tube and the liquid pipe. At this time, the blower is cooperated to quickly absorb the interior of the suction pipe, and the high-temperature airflow is injected into the interior of the circulating heat-absorbing copper pipe. The heat conductivity on the surface of the circulating heat-absorbing copper pipe is used to heat the surface of the liquid pipe and the butt sealing head in multiple directions by the heat source, so that the surface of the liquid pipe and the butt sealing head is always in a high-temperature state, and the excessive heat source dissipation on the inner wall surface of the liquid pipe and the butt sealing head is reduced, which will cause condensation and molding effect between the inner wall surface of the liquid pipe and the butt sealing head.

[0016] The utility model discloses a pouring gate insulation device for low-pressure casting. The heat source remaining after the diversion transfer will pass through the air guide pipe to guide the remaining hot gas into the interior of the liquid guide funnel. At the same time, the bubbles are used to churn the molten steel inside the liquid guide funnel, and then the viscous molten steel inside the liquid guide funnel is stirred, so that the molten steel outside the liquid guide funnel and the molten steel deep in the liquid guide funnel are stirred and mixed, so as to maintain the temperature of the molten steel, so that the low-temperature viscous molten steel and the surrounding high-temperature molten steel are effectively mixed and softened, thereby reducing the accumulation of molten steel inside the liquid guide funnel and increasing the fluidity of the molten steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a transverse cross-sectional stereoscopic view of the heat preservation gate in the utility model;

[0020] Figure 3 It is a cutaway stereogram of the heat preservation gate in the utility model;

[0021] Figure 4 It is a perspective view of the expanded cross-section of the butt seal head in the utility model;

[0022] Figure 5 It is a partial cutaway stereoscopic view of the heat preservation gate in the utility model;

[0023] Description of the reference numerals in the drawings: 11, liquid guiding funnel; 111, liquid pipe; 112, centralized funnel cylinder; 12, heat preservation gate; 121, circulating heat absorption copper pipe; 122, blower; 123, suction pipe; 124, air guide pipe; 125, docking head; 126, clamping ring; 127, lock; 13, docking sealing head; 131, liquid guiding pipe; 132, docking ferrule. Detailed implementation manners

[0024] The following further describes the present utility model in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments cited do not limit the present utility model.

[0025] Refer to Figure 1 - Figure 5 As shown, a gate heat preservation device for low-pressure casting of the present utility model includes a liquid guiding funnel 11 and a heat preservation gate 12 detachably installed on the outer surface of the liquid guiding funnel 11, a docking sealing head 13 detachably installed on the outer surface of the bottom of the liquid guiding funnel 11. A liquid pipe 111 is fixedly connected to the bottom surface of the liquid guiding funnel 11 and is arranged on the inner wall surface of the heat preservation gate 12. A centralized funnel cylinder 112 is fixedly connected to the inner top edge position of the liquid pipe 111 and is arranged at the bottom edge position of the liquid guiding funnel 11; A circulating heat absorption copper pipe 121 is fixedly connected to the inner wall surface of the heat preservation gate 12 and wraps the outer surface of the liquid pipe 111. One end of the circulating heat absorption copper pipe 121 extends to the outer surface of the heat preservation gate 12. Two groups of blowers 122 are fixedly installed at both ends of the circulating heat absorption copper pipe 121 respectively. A suction pipe 123 is fixedly installed on the outer surface of the liquid pipe 111 and at the top edge position of the heat preservation gate 12. The other end of the suction pipe 123 is fixedly connected to the receiving end of the blower 122;

[0026] The liquid guiding funnel 11 is used to drain the molten steel and pour it into the interior of the liquid pipe 111. While draining the molten steel, the concentrated funnel cylinder 112 on the inner surface of the liquid guiding funnel 11 is used to preliminarily compress the accumulated molten steel, so as to slow down the flow rate of the molten steel under high-speed flow. At this time, through the gap between the outer surface of the concentrated funnel cylinder 112 and the liquid pipe 111, the high-temperature gas generated on the surface of the molten steel is accumulated and collected. At this time, the blower 122 is used to quickly absorb the inside of the suction pipe 123, and the high-temperature air flow is poured into the interior of the circulating heat-absorbing copper pipe 121. Using the heat conduction performance on the surface of the circulating heat-absorbing copper pipe 121, the heat source is used to heat the surfaces of the liquid pipe 111 and the butt joint sealing head 13 in all directions, so that the surfaces of the liquid pipe 111 and the butt joint sealing head 13 are always in a high-temperature state, reducing the excessive dissipation of the heat source on the inner wall surfaces of the liquid pipe 111 and the butt joint sealing head 13, which will condense the forming effect between the inner wall surfaces of the liquid pipe 111 and the butt joint sealing head 13, and avoiding the waste of the high-temperature air flow generated inside the pouring device.

[0027] Refer to Figure 1 - Figure 5 As shown, in an embodiment of the present invention, two sets of air guide pipes 124 are fixedly connected to the output end of the blower 122. One end of the other set of air guide pipes 124 is fixedly connected to the outer surface of the liquid guiding funnel 11. The end of the air guide pipe 124 connected to the liquid guiding funnel 11 extends deep into the inner side of the liquid guiding funnel 11. A docking head 125 is detachably installed at one end of the two sets of air guide pipes 124. There is a cavity between the heat-insulating pouring gate 12 and the liquid pipe 111, and the surface of the circulating heat-absorbing copper pipe 121 is arranged on the inner side wall of the cavity. A clamping ring 126 is fixedly connected to the outer surface of the liquid pipe 111 and at the bottom edge position of the heat-insulating pouring gate 12. A locking buckle 127 is fixedly connected to the outer surface of the clamping ring 126. The outer surface of the butt joint sealing head 13 is movably lapped at the bottom edge position of the liquid pipe 111. A liquid guide pipe 131 is fixedly connected to the bottom surface of the butt joint sealing head 13. A docking collar 132 is fixedly connected to the outer surface of the butt joint sealing head 13. The surface of the locking buckle 127 is detachably installed on the inner side wall of the docking collar 132;

[0028] The residual heat source after the diversion transfer will pass through the air guide pipe 124 to guide the residual hot gas into the interior of the liquid guiding funnel 11, and at the same time, the bubbles are used to churn the molten steel inside the liquid guiding funnel 11, and then the viscous molten steel inside the liquid guiding funnel 11 is stirred and mixed, so that the temperature of the molten steel is maintained, and the low-temperature viscous molten steel and the surrounding high-temperature molten steel are effectively mixed and softened, thereby reducing the accumulation of molten steel inside the liquid guiding funnel 11, increasing the fluidity of molten steel, and avoiding the concentrated funnel tube 112 on the bottom surface of the liquid guiding funnel 11. The molten steel is relatively small in one-time diversion, and a large amount of molten steel will accumulate inside the liquid guiding funnel 11. The accumulated molten steel will quickly dissipate the heat source to the outside inside the liquid guiding funnel 11. The cooled molten steel will increase the viscosity of the molten steel to a certain extent, and the molten steel cannot effectively pass through the concentrated funnel tube 112, causing blockage inside the concentrated funnel tube 112.

[0029] Working principle: cooperate with the liquid guide funnel 11 to drain the molten steel and pour it into the interior of the liquid pipe 111. While draining the molten steel, cooperate with the concentrating funnel tube 112 on the inner surface of the liquid guide funnel 11 to initially compress the accumulated molten steel, so as to slow down the flow speed of the molten steel under high-speed flow. At this time, the high-temperature gas generated on the surface of the molten steel is accumulated and collected through the gap between the outer surface of the concentrating funnel tube 112 and the liquid pipe 111. At this time, cooperate with the blower 122 to close the suction pipe 12 3 is quickly absorbed, and the high-temperature airflow is infused into the circulating heat-absorbing copper tube 121. The heat conductivity on the surface of the circulating heat-absorbing copper tube 121 is used to heat the surface of the liquid tube 111 and the butt-jointed sealing head 13 in multiple directions, so that the surface of the liquid tube 111 and the butt-jointed sealing head 13 is always in a high-temperature state, reducing the excessive dissipation of the heat source on the inner wall surface of the liquid tube 111 and the butt-jointed sealing head 13, which will condense and form between the inner wall surfaces of the liquid tube 111 and the butt-jointed sealing head 13;

[0030] The residual heat source after the diversion transfer will pass through the air guide pipe 124 to guide the residual hot gas into the interior of the liquid guiding funnel 11. At the same time, the bubbles are used to churn the molten steel inside the liquid guiding funnel 11, and then the viscous molten steel inside the liquid guiding funnel 11 is stirred, so that the molten steel outside the liquid guiding funnel 11 and the molten steel deep in the liquid guiding funnel 11 are stirred and mixed, so as to maintain the temperature of the molten steel, and make the low-temperature viscous molten steel and the surrounding high-temperature molten steel effectively mixed and softened, thereby reducing the accumulation of molten steel inside the liquid guiding funnel 11 and increasing the fluidity of the molten steel.

[0031] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A pouring gate insulation device for low-pressure casting, comprising a liquid guide funnel (11) and an insulation pouring gate (12) detachably mounted on the outer surface of the liquid guide funnel (11), and a butt seal head (13) detachably mounted on the outer surface of the bottom of the liquid guide funnel (11), characterized in that: The bottom surface of the liquid guide funnel (11) is fixedly connected to a liquid pipe (111) arranged on the inner wall surface of the insulation gate (12); the inner top edge position of the liquid pipe (111) is fixedly connected to a concentrating funnel tube (112) arranged on the bottom edge position of the liquid guide funnel (11); the inner wall surface of the insulation gate (12) is fixedly connected to a circulating heat-absorbing copper pipe (121) wrapped around the outer surface of the liquid pipe (111); one end of the circulating heat-absorbing copper pipe (121) extends to the outer surface of the insulation gate (12); two groups of blowers (122) are respectively fixedly installed at both ends of the circulating heat-absorbing copper pipe (121); an air suction pipe (123) is fixedly installed on the outer surface of the liquid pipe (111) and located at the top edge position of the insulation gate (12); the other end of the air suction pipe (123) is fixedly connected to the receiving end of the blower (122).

2. A pouring gate insulation device for low pressure casting according to claim 1, characterized in that: Two groups of air guide tubes (124) are fixedly connected to the output end of the blower (122), and one end of the other group of air guide tubes (124) is fixedly connected to the outer surface of the liquid guide funnel (11).

3. A pouring gate insulation device for low pressure casting according to claim 2, characterized in that: One end of the air guide tube (124) connected to the liquid guide funnel (11) extends to the deep inside of the liquid guide funnel (11), and a docking joint (125) is detachably mounted on one end of the two sets of air guide tubes (124).

4. The pouring gate insulation device for low pressure casting according to claim 1, characterized in that: A cavity is provided between the heat-insulating pouring gate (12) and the liquid pipe (111), and the surface of the circulating heat-absorbing copper pipe (121) is provided on the inner wall surface of the cavity.

5. The pouring gate insulation device for low pressure casting according to claim 1, characterized in that: A clamping ring (126) is fixedly connected to the outer surface of the liquid pipe (111) at the bottom edge of the thermal insulation gate (12), and a locking buckle (127) is fixedly connected to the outer surface of the clamping ring (126).

6. The pouring gate insulation device for low pressure casting according to claim 1, characterized in that: The outer surface of the butt-jointed sealing head (13) is movably overlapped at the bottom edge of the liquid pipe (111), and a liquid guide pipe (131) is fixedly connected to the bottom surface of the butt-jointed sealing head (13).

7. The low pressure casting pouring insulation device according to claim 1, characterized in that: A butt joint ring (132) is fixedly connected to the outer surface of the butt joint sealing head (13).

8. The pouring gate insulation device for low pressure casting according to claim 5, characterized in that: The surface of the lock buckle (127) is detachably mounted on the inner wall surface of the docking ring (132).

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