CN215288932U

CN215288932U - Heat treatment equipment for low-pressure cast aluminum alloy shell

Info

Publication number: CN215288932U
Application number: CN202121637194.8U
Authority: CN
Inventors: 马铭伟; 王昱; 张懿瀛; 路林; 张宏明; 潘普明; 张学明; 董伟; 张亚黎; 路国义
Original assignee: Yingkou Jinhe Mechanical And Electrical Equipment Co ltd
Current assignee: Yingkou Jinhe Mechanical And Electrical Equipment Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-12-24
Anticipated expiration: 2031-07-19

Abstract

The utility model relates to a heat treatment facility technical field specifically is low pressure casting aluminum alloy casing heat treatment facility, including the homogenization stove, the interior stove in outer stove is located to the homogenization stove including outer stove and cover, it has closed hot-blast wind channel to enclose between outer stove and the interior stove, the interior roof and the interior diapire of outer stove are fixed respectively and are equipped with two centrifugal fan, two centrifugal fan's air outlet is located hot-blast wind channel and is the setting of keeping away from the other side, the exit end that is located the centrifugal fan's of the entrance point at top and is located the centrifugal fan of bottom all communicates with the interior stove, and the fixed exit frame that is equipped with of exit end that is located the centrifugal fan of bottom, the exit frame internal fixation is equipped with the guide plate. The utility model discloses a mode of longitudinal circulation heating, area is little, and the effective space of interior stove is big to the high temperature hot-blast that will be located the centrifugal fan of bottom through the guide plate and blow off evenly is full of in whole interior stove, the temperature distribution homogeneity in the stove in the improvement.

Description

Heat treatment equipment for low-pressure cast aluminum alloy shell

Technical Field

The utility model relates to a heat treatment equipment technical field specifically is low pressure casting aluminum alloy casing heat treatment equipment.

Background

The aluminum alloy shell casting is difficult to produce, qualified shell castings are difficult to produce by adopting common gravity casting, and even if the shell castings can be produced, the qualified rate is low. The low-pressure casting pouring process is an effective method for producing qualified and stable-quality aluminum alloy shell castings.

The low-pressure casting is a casting method in which liquid alloy is pressed into a casting mold cavity from bottom to top under the action of pressure and is solidified under the action of pressure to obtain a casting. The aluminum alloy shell has dendritic crystal segregation in the solidification process of low-pressure casting, and has the phenomena of coarse precipitated phases, uneven chemical component distribution and the like in crystal boundaries and crystal grains.

The utility model discloses a utility model with publication number CN213012995U discloses a homogeneity stove, its homogeneity furnace body that includes the subregion and set up, is located the fixed baffle that is equipped with in homogeneity furnace body middle part in every district, and the baffle is heating chamber and studio from top to bottom respectively, and every district is equipped with a circulating fan and one set of proportion nozzle, is close to circulating fan department in the homogeneity furnace body and is equipped with the return air board. The utility model discloses an adopt the circulating air of horizontal circulation to heat in the stove, not only have the defect that furnace body area is big, have the defect that effective heating space is little in the stove moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low pressure casting aluminum alloy casing heat treatment facility to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the heat treatment equipment for the low-pressure cast aluminum alloy shell comprises a homogenizing furnace, wherein the homogenizing furnace comprises an outer furnace and an inner furnace sleeved in the outer furnace, a hot air duct is enclosed between the outer furnace and the inner furnace and is annular, an inner furnace supporting block is arranged in the hot air duct, the bottom end and the top end of the inner furnace supporting block are respectively and fixedly connected with the inner bottom wall of the outer furnace and the outer bottom wall of the inner furnace, a burner is fixedly connected with the side wall of the outer furnace, a nozzle of the burner obliquely and upwards extends into the hot air duct, two centrifugal fans are respectively and fixedly arranged on the inner top wall and the inner bottom wall of the outer furnace, air outlets of the two centrifugal fans are positioned in the hot air duct and are arranged back to back, the inlet end of the centrifugal fan positioned at the top and the outlet end of the centrifugal fan positioned at the bottom are both communicated with the inner furnace, and an outlet frame is fixedly arranged at the outlet end of the centrifugal fan positioned at the bottom, and a guide plate is fixedly arranged in the outlet frame.

Optionally, the guide plate includes two water conservancy diversion swash plates, two sets of broken line guide plates and two water conservancy diversion vertical plates, the front and back lateral wall of lateral wall, broken line guide plate around the water conservancy diversion swash plate and the front and back lateral wall of water conservancy diversion vertical plate respectively with exit frame inner wall fixed connection around, two sets of broken line guide plate is located the centre of two water conservancy diversion swash plates, and is two sets of broken line guide plate is the symmetry setting about exit frame's vertical center pin, two the water conservancy diversion vertical plate is located the centre of two sets of broken line guide plates.

Optionally, the broken line guide plate includes first straight board, with first straight board bottom integrated into one piece's swash plate, with swash plate bottom integrated into one piece's the straight board of second, first straight board is parallel equidistant straight line distribution with the water conservancy diversion vertical plate, the swash plate is to the slope of water conservancy diversion vertical plate direction, two the bottom of water conservancy diversion swash plate is inside wall about fixed connection exit frame respectively, and the top of water conservancy diversion swash plate is to the slope of the straight board direction of second.

Optionally, a motor for driving the centrifugal fan to rotate is fixedly mounted on the outer bottom wall of the outer furnace, and the outer bottom wall of the outer furnace is fixedly connected with the base.

Optionally, the inner furnace supporting block is rectangular, and a cavity communicated with a hot air duct is formed in the inner furnace supporting block.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model adopts a longitudinal circulation heating mode, has small occupied area and large effective space of the inner furnace, and evenly fills the whole inner furnace with high-temperature hot air blown out by the centrifugal fan positioned at the bottom through the guide plate, thereby improving the temperature distribution uniformity in the inner furnace;

2. the utility model discloses a water conservancy diversion swash plate and broken line guide plate reduce the hot-blast velocity of flow of high temperature, make air current longitudinal distribution more tend to evenly, have reduced the production of large-scale vortex to evenly separate the high temperature through first straight board, the straight board of second and water conservancy diversion longitudinal plate and hot-blastly, improve the air current distribution condition.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a schematic structural view of the middle outlet frame and the guide plate of the present invention.

In the figure: 1. homogenizing and curing; 2. an outer furnace; 3. an inner furnace; 4. a hot air duct; 5. an inner furnace support block; 6. burning a nozzle; 7. a centrifugal fan; 8. an outlet frame; 9. a baffle; 901. a flow guiding sloping plate; 902. a fold line baffle; 9021. a first straight plate; 9022. a sloping plate; 9023. a second straight plate; 903. a flow guide longitudinal plate; 10. a motor; 11. a base.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1-2, the present invention provides a heat treatment apparatus for low-pressure cast aluminum alloy shells, which comprises an equalizing furnace 1, wherein the equalizing furnace 1 comprises an outer furnace 2 and an inner furnace 3 sleeved in the outer furnace 2. Enclose between outer stove 2 and the interior stove 3 and close there is hot-blast wind channel 4, hot-blast wind channel 4 is the annular, and is equipped with interior stove supporting block 5 in the hot-blast wind channel 4, and interior stove supporting block 5 is the rectangle block shape, and the bottom and the top of the interior stove supporting block 5 of cavity that intercommunication hot-blast wind channel 4 were seted up to interior stove supporting block 5 are respectively through the interior diapire of the outer stove 2 of bolt fixed connection and the outer diapire of interior stove 3. The side wall of the outer furnace 2 is fixedly connected with a burner 6 through a bolt, and a nozzle of the burner 6 obliquely and upwards extends into the hot air duct 4.

The interior roof and the interior diapire of outer stove 2 are equipped with two centrifugal fan 7 through the bolt fastening respectively, and the air outlet of two centrifugal fan 7 is located hot-blast wind channel 4 and is the setting of keeping away from each other, is located the entrance point of the centrifugal fan 7 at top and is located the exit end of the centrifugal fan 7 of bottom and all communicates with interior stove 3. Outer stove 2's outer diapire fixed mounting has the rotatory motor 10 of drive centrifugal fan 7, and the outer diapire of outer stove 2 of flange bolted connection is passed through to motor 10's shell, and motor 10's output shaft stretches into hot-blast wind channel 4 and through the fan axle of shaft coupling fixed connection centrifugal fan 7, and motor 10 is located the outside of homogenization stove 1, avoids the inside high temperature of homogenization stove 1 to cause the damage to motor 10. The outer bottom wall of the outer furnace 2 is fixedly connected with a base 11, and the base 11 is used for elevating the outer furnace 2 and providing an installation space for the motor 10 positioned at the bottom.

The utility model adopts a longitudinal circulation heating mode, occupies small area and has large effective space of the inner furnace 3. And starting the motor 10, pumping out the air in the inner furnace 3 from bottom to top by the centrifugal fan 7 positioned at the top, and sending the air into the hot air duct 4, and sending the air in the hot air duct 4 into the inner furnace 3 by the centrifugal fan 7 positioned at the bottom, wherein the process is a circulating process of circulating furnace gas. And (4) starting the burner 6, spraying fuel and combustion-supporting air from the burner 6, and igniting the fuel to form a high-temperature product. The high-temperature product is mixed with the circulating furnace gas to form high-temperature hot air, so that a high-temperature environment is provided for homogenizing the workpieces in the inner furnace 3. And an emptying pipe is arranged at the top of the outer furnace 2 for removing tail gas.

An outlet frame 8 is fixedly arranged at the outlet end of the centrifugal fan 7 positioned at the bottom, and a guide plate 9 is fixedly arranged in the outlet frame 8. The guide plate 9 comprises two inclined guide plates 901, two groups of broken line guide plates 902 and two longitudinal guide plates 903, the front and rear side walls of the inclined guide plates 901, the front and rear side walls of the broken line guide plates 902 and the front and rear side walls of the longitudinal guide plates 903 are welded with the front and rear inner walls of the outlet frame 8 respectively, the two groups of broken line guide plates 902 are positioned in the middle of the two inclined guide plates 901, the two groups of broken line guide plates 902 are symmetrically arranged about the longitudinal central axis of the outlet frame 8, and the two longitudinal guide plates 903 are positioned in the middle of the two groups of broken line guide plates 902.

The broken-line guide plate 902 comprises a first straight plate 9021, an inclined plate 9022 integrally formed with the bottom end of the first straight plate 9021 and a second straight plate 9023 integrally formed with the bottom end of the inclined plate 9022, the first straight plate 9021 and the flow guide longitudinal plate 903 are in parallel and linearly distributed at equal intervals, the inclined plate 9022 inclines towards the flow guide longitudinal plate 903, the bottom ends of the two flow guide inclined plates 901 are respectively welded to the left inner side wall and the right inner side wall of the outlet frame 8, and the top ends of the flow guide inclined plates 901 incline towards the second straight plate 9023.

The guide plate 9 is used for uniformly filling the whole inner furnace 3 with high-temperature hot air blown out by the centrifugal fan 7 positioned at the bottom, wherein the guide inclined plate 901 and the broken line guide plate 902 are used for reducing the flow velocity of the high-temperature hot air, so that the longitudinal distribution of air flow is more uniform, the generation of large eddy is reduced, and the first straight plate 9021, the second straight plate 9023 and the guide longitudinal plate 903 are used for uniformly separating the high-temperature hot air, so that the air flow distribution condition is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Low pressure casting aluminum alloy casing heat treatment facility, including homogenization stove (1), homogenization stove (1) is located including outer stove (2) and cover interior stove (3) in outer stove (2), its characterized in that: a hot air duct (4) is enclosed between the outer furnace (2) and the inner furnace (3), the hot air duct (4) is annular, an inner furnace supporting block (5) is arranged in the hot air duct (4), the bottom end and the top end of the inner furnace supporting block (5) are respectively and fixedly connected with the inner bottom wall of the outer furnace (2) and the outer bottom wall of the inner furnace (3), the side wall of the outer furnace (2) is fixedly connected with a burner (6), a nozzle of the burner (6) obliquely and upwards extends into the hot air duct (4), the inner top wall and the inner bottom wall of the outer furnace (2) are respectively and fixedly provided with two centrifugal fans (7), air outlets of the two centrifugal fans (7) are positioned in the hot air duct (4) and are arranged back to back, the inlet end of the centrifugal fan (7) positioned at the top and the outlet end of the centrifugal fan (7) positioned at the bottom are both communicated with the inner furnace (3), and the outlet end of the centrifugal fan (7) positioned at the bottom is fixedly provided with an outlet frame (8), a guide plate (9) is fixedly arranged in the outlet frame (8).

2. The apparatus for heat treating a low pressure cast aluminum alloy enclosure of claim 1, wherein: guide plate (9) include two water conservancy diversion swash plates (901), two sets of broken line guide plate (902) and two water conservancy diversion vertical plates (903), the front and back lateral wall of water conservancy diversion swash plate (901), the front and back lateral wall of broken line guide plate (902) and the front and back lateral wall of water conservancy diversion vertical plate (903) respectively with the front and back inner wall fixed connection of export frame (8), two sets of broken line guide plate (902) are located the centre of two water conservancy diversion swash plates (901), and two sets of broken line guide plate (902) are the symmetry setting about the vertical center pin of export frame (8), two water conservancy diversion vertical plate (903) are located the centre of two sets of broken line guide plate (902).

3. The apparatus of claim 2, wherein: the broken line guide plate (902) comprises a first straight plate (9021), an inclined plate (9022) integrally formed at the bottom end of the first straight plate (9021), and a second straight plate (9023) integrally formed at the bottom end of the inclined plate (9022), wherein the first straight plate (9021) and the flow guide longitudinal plate (903) are linearly distributed in parallel at equal intervals, the inclined plate (9022) inclines towards the direction of the flow guide longitudinal plate (903), the bottom ends of the two flow guide inclined plates (901) are respectively and fixedly connected with the left inner side wall and the right inner side wall of the outlet frame (8), and the top end of the flow guide inclined plate (901) inclines towards the direction of the second straight plate (9023).

4. The apparatus for heat treating a low pressure cast aluminum alloy enclosure of claim 1, wherein: the outer bottom wall of the outer furnace (2) is fixedly provided with a motor (10) for driving the centrifugal fan (7) to rotate, and the outer bottom wall of the outer furnace (2) is fixedly connected with a base (11).

5. The apparatus for heat treating a low pressure cast aluminum alloy enclosure of claim 1, wherein: the inner furnace supporting block (5) is rectangular, and a cavity communicated with the hot air duct (4) is formed in the inner furnace supporting block (5).