CN216680159U

CN216680159U - Furnace cover structure of low-pressure casting holding furnace

Info

Publication number: CN216680159U
Application number: CN202123276461.6U
Authority: CN
Inventors: 张发达; 李新涛; 赵亮; 陈佳铭; 周培全; 顾银华
Original assignee: Aluminum Wuxi Co ltd
Current assignee: Aluminum Wuxi Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-06-07
Anticipated expiration: 2031-12-23

Abstract

The utility model belongs to the technical field of low pressure casting and specifically relates to a bell structure of low pressure casting heat preservation stove is related to, and it includes the bell, the bell is the level setting, it has the liquid outlet to follow vertical the opening on the bell. The bottom wall of the furnace cover is provided with a heat gathering port, the heat gathering port is coaxially communicated with the liquid outlet, and the inner diameter of the heat gathering port is gradually increased along the vertical downward direction. This application has the effect that improves the finished product quality of foundry goods.

Description

Furnace cover structure of low-pressure casting holding furnace

Technical Field

The application relates to the field of low-pressure casting, in particular to a furnace cover structure of a low-pressure casting holding furnace.

Background

The low-pressure casting is a casting method that a mould is arranged above a sealed heat preservation furnace filled with alloy liquid, compressed air is introduced into the heat preservation furnace to cause low pressure on the surface of molten metal, so that the molten metal rises from a liquid lifting pipe connecting the metal in the furnace and a mould cavity to fill a casting mould and control solidification.

Holding furnaces are usually composed of a furnace body and a furnace lid attached to the top of the furnace body.

Referring to fig. 1, a furnace cover 1 is a planar plate-shaped structure, a liquid outlet 2 is formed on the furnace cover 1, and a liquid lifting pipe 3 vertically penetrates through the liquid outlet 2 of the furnace cover 1.

After the casting is formed in the mold, excess scrap material may be solidified on the casting at the gate and need to be cut off.

With respect to the related art in the above, the inventors consider that: the temperature of the liquid outlet of bell is lower, influences the solidification rate of foundry goods in runner department, and the waste material that can make the foundry goods solidify in runner department on the one hand is longer, and then influences the die sinking, and on the other hand makes the foundry goods appear the shrinkage porosity easily, has reduced the finished product quality of foundry goods.

SUMMERY OF THE UTILITY MODEL

In order to improve the finished product quality of foundry goods, this application provides a bell structure of low pressure casting heat preservation stove.

The application provides a pair of bell structure of low pressure casting heat preservation stove adopts following technical scheme:

the utility model provides a bell structure of low pressure casting heat preservation stove, includes the bell, the bell is the level setting, it has the liquid outlet to open along vertical on the bell, the diapire of bell is opened there is heat gathering mouth, heat gathering mouth with the coaxial intercommunication of liquid outlet, the internal diameter of heat gathering mouth is crescent along vertical decurrent direction.

Through adopting above-mentioned technical scheme, the hot-air in the heat preservation stove upwards disperses, and the hot-air gathering is in gathering the hot mouthful to make the bell be close to the position temperature of liquid outlet higher, reduced the speed that metal liquid solidifies in runner department, thereby reduced the foundry goods at the waste material length that runner department solidifies, the die sinking of being convenient for. Meanwhile, the shrinkage porosity of the casting is reduced, and the quality of the finished casting is improved.

Optionally, the roof of bell is provided with the insulation cover, the insulation cover with the coaxial setting of liquid outlet, the insulation cover is used for the cover to establish in the outside of stalk.

By adopting the technical scheme, the heat preservation sleeve reduces the heat loss degree of the furnace cover at the liquid outlet, and further improves the heat preservation degree of the liquid outlet of the furnace cover.

Optionally, the inner diameter of the heat-insulating sleeve is equal to the inner diameter of the liquid outlet.

Through adopting above-mentioned technical scheme, when the stalk wears to locate in the liquid outlet, the insulation cover is laminated in the stalk, has improved the insulation effect of insulation cover to the stalk, and then has reduced the bell and has been close to the thermal scattering and disappearing of liquid outlet.

Optionally, a reinforcing rib is fixed on the outer circumferential wall of the heat-insulating sleeve, and the reinforcing rib is fixed on the furnace cover.

Through adopting above-mentioned technical scheme, the steadiness of insulation support has been improved to the strengthening rib.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the hot air gathers in gathering the hot mouth to make the bell be close to the position temperature of liquid outlet higher, reduced the speed that metal liquid solidifies in runner department, thereby reduced the waste material length that the foundry goods solidifies in runner department, be convenient for the die sinking. Meanwhile, the condition that the casting is shrunk and loosened is reduced, and the finished product quality of the casting is improved;

2. the heat preservation sleeve is arranged, so that the heat loss of the furnace cover close to the liquid outlet is further reduced.

Drawings

Fig. 1 is a schematic view showing a structure of a furnace cover and a lift pipe in the related art.

FIG. 2 is a schematic structural view showing the structure of a furnace cover of a low-pressure casting holding furnace according to example 1 of the present application.

FIG. 3 is a schematic structural view showing the structure of a furnace cover of a low-pressure casting holding furnace according to example 2 of the present application.

Description of reference numerals:

1. a furnace cover; 2. a liquid outlet; 3. a riser tube; 4. a heat collecting port; 5. a thermal insulation sleeve; 6. and (5) reinforcing ribs.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses bell structure of low pressure casting heat preservation stove.

Example 1

Referring to fig. 2, bell 1 structure of low pressure casting heat preservation stove includes bell 1, and bell 1 is the level setting, and the center of bell 1 has liquid outlet 2 along vertical opening, and the diapire of bell 1 is opened has and is gathered hot mouthful 4, gathers the internal diameter of hot mouthful 4 and increases gradually along vertical decurrent direction, gathers the top and the liquid outlet 2 intercommunication of hot mouthful 4.

Referring to fig. 1 and 2, the lift tube 3 passes through the liquid outlet 2 of the furnace cover 1 in use, and the inner wall of the heat collecting port 4 is spaced from the inner wall of the lift tube 3.

The hot-air in the heat preservation stove upwards disperses, and the hot-air gathers in gathering hot mouthful 4 to make bell 1 be close to the position temperature of liquid outlet 2 higher, reduced the speed that metal liquid solidifies in runner department on the one hand, thereby reduced the waste material length that the foundry goods solidifies in runner department, the die sinking of being convenient for. On the other hand, the condition that the casting piece is shrunk and loosened is reduced, and the finished product quality of the casting piece is improved.

The implementation principle of the embodiment 1 is as follows: set up through the diapire at bell 1 and gather hot mouthful 4 to make the heat assemble in gathering hot mouthful 4, improved bell 1 and be close to the temperature of liquid outlet 2 department, and then reduced the waste material length that the foundry goods solidifies in runner department, the die sinking of being convenient for has reduced the condition that the shrinkage porosity appears in the foundry goods simultaneously, has improved the finished product quality of foundry goods.

Example 2

Referring to fig. 3, embodiment 2 differs from embodiment 1 in that: the structure of the insulating sleeve 5 and the reinforcing ribs 6 is added.

Referring to fig. 1 and 3, the top wall of the furnace cover 1 is fixedly connected with a heat-insulating sleeve 5, the inner diameter of the heat-insulating sleeve 5 is the same as that of the liquid outlet 2, and the heat-insulating sleeve 5 and the liquid outlet 2 are coaxially arranged. When the liquid outlet 2 is worn to locate by the liquid lifting pipe 3, the thermal insulation sleeve 5 is attached to the outer wall of the liquid lifting pipe 3.

The heat preservation sleeve 5 reduces the heat loss degree of the furnace cover 1 at the liquid outlet 2, further improves the heat preservation degree of the liquid outlet 2 of the furnace cover 1, and further improves the finished product quality of the casting.

Referring to fig. 3, in addition, reinforcing ribs 6 are fixedly connected to the outer circumferential wall of the heat insulation sleeve 5, the reinforcing ribs 6 are triangular plates, the reinforcing ribs 6 are fixedly connected to the furnace cover 1, and four reinforcing ribs 6 are uniformly distributed around the circumference of the heat insulation sleeve 5.

The four reinforcing ribs 6 play a role in reinforcing the heat insulation sleeve 5, and the stability of the heat insulation sleeve 5 is improved.

The implementation principle of the embodiment 2 is as follows: the heat preservation sleeve 5 is arranged, so that the heat preservation degree of the liquid outlet 2 of the furnace cover 1 is further improved, and the quality of the finished casting is further improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a bell structure of low pressure casting heat preservation stove which characterized in that: including bell (1), bell (1) is the level setting, bell (1) is gone up along vertical opening has liquid outlet (2), the diapire of bell (1) is opened and is gathered hot mouthful (4), gather hot mouthful (4) with the coaxial intercommunication of liquid outlet (2), the internal diameter of gathering hot mouthful (4) is along vertical decurrent direction crescent.

2. The cover structure of a low pressure casting heat retention furnace according to claim 1, characterized in that: the roof of bell (1) is provided with insulation cover (5), insulation cover (5) with liquid outlet (2) coaxial setting, insulation cover (5) are used for the cover to establish the outside at stalk (3).

3. The cover structure of a low pressure casting heat retention furnace according to claim 2, characterized in that: the inner diameter of the heat insulation sleeve (5) is equal to that of the liquid outlet (2).

4. The cover structure of a low pressure casting heat retention furnace according to claim 2, characterized in that: and a reinforcing rib (6) is fixed on the outer circumferential wall of the heat insulation sleeve (5), and the reinforcing rib (6) is fixed on the furnace cover (1).