CN219402316U

CN219402316U - Compact rapid cooling structure

Info

Publication number: CN219402316U
Application number: CN202320807864.9U
Authority: CN
Inventors: 俞国平
Original assignee: Ningbo East Heating Equipment Co ltd
Current assignee: Ningbo East Heating Equipment Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-25
Anticipated expiration: 2033-04-13

Abstract

The application discloses compact rapid cooling structure relates to the technical field of powder metallurgy. A compact rapid cooling structure is provided with a rapid cooling section behind a high-temperature sintering zone of a sintering furnace, the rapid cooling section comprises a wind feeding zone, a cooling zone and a heat exchange circulating zone which are sequentially communicated, a circulating fan is arranged above a furnace body of the rapid cooling section, the wind feeding zone is communicated with an air outlet of the circulating fan, a mesh belt penetrates through the cooling zone, a powder metallurgy product is supported by the mesh belt, the mesh belt advances along the cooling zone, and the heat exchange circulating zone is communicated with an air inlet of the circulating fan. This application has the occupation space who reduces quick cooling structure, reduces the effect of the installation degree of difficulty.

Description

Compact rapid cooling structure

Technical Field

The application relates to the field of powder metallurgy, in particular to a compact rapid cooling structure.

Background

Powder metallurgy sinter hardening is a process in which a powder metallurgy product having a suitable metal or alloy composition is rapidly cooled from a sintering temperature by the action of a rapid cooling structure, and austenite in the powder metallurgy product undergoes non-diffusional lattice transformation to a martensitic structure. Powder metallurgy sinter hardening combines sintering and heat treatment into one process, and improves the hardness and strength of the powder metallurgy product through rapid cooling.

The powder metallurgy sintering furnace is continuous equipment integrating sintering cooling into a whole and is used for performing powder metallurgy sintering hardening. The powder metallurgy sintering furnace needs to be added with a rapid cooling structure after a high-temperature sintering area, so that the process requirements of powder metallurgy products are met. The common quick cooling structure comprises a centrifugal fan and a heat exchanger, wherein the protective atmosphere is extracted through the centrifugal fan, changed into cold air through cooling of the heat exchanger, blown into the product surface, and quickly cooled to achieve the hardening effect.

The existing rapid cooling structure is provided with a plurality of connecting lines and equipment, occupies huge volume, causes large installation difficulty and is not suitable for a small-sized powder metallurgy sintering furnace.

Disclosure of Invention

In order to reduce the occupation space of the rapid cooling structure and reduce the installation difficulty, the application provides a compact rapid cooling structure.

The application provides a compact rapid cooling structure adopts following technical scheme:

a compact rapid cooling structure is characterized in that a rapid cooling section is arranged behind a high-temperature sintering area of a sintering furnace, the rapid cooling section comprises a wind supply area, a cooling area and a heat exchange circulating area which are sequentially communicated, a circulating fan is arranged above a furnace body of the rapid cooling section, the wind supply area is communicated with an air outlet of the circulating fan, a mesh belt penetrates through the cooling area, a powder metallurgy product is supported by the mesh belt, the mesh belt runs along the cooling area, and the heat exchange circulating area is communicated with an air inlet of the circulating fan.

Through adopting above-mentioned technical scheme, in the cooling section is blown into with cold wind to circulating fan, cold wind conveys in the air supply district, enters into the cooling district and carries out rapid cooling to the powder alloy product on the guipure, and the temperature of cold wind rises and removes and reach the heat transfer circulation district, reduces the temperature of cold wind again to form the circulation in the circulating fan returns to. The whole loop is concentrated in the quick cooling section, so that the occupied space of the quick cooling structure is reduced, and the small sintering furnace can be used, so that the installation difficulty is reduced.

Optionally, the air supply district install connect in the bellows on quick-cooling section top, bellows intercommunication in the air outlet of fan, the bellows keep away from one side intercommunication of fan has many tuber pipes, the tuber pipe orientation the upper surface of guipure.

Through adopting above-mentioned technical scheme, make the distribution of cold wind more even through many tuber pipes to cold wind can be to the even cooling of powder metallurgy goods.

Optionally, the inboard array of bellows is provided with the grid tray, the bellows is connected with the adjusting part who is used for adjusting the grid tray.

By adopting the technical scheme, the grid plate is used for scattering cold air, and changing the wind direction of the cold air, so that the cold air cools the powder metallurgy product more uniformly.

Optionally, the adjusting part includes the mount, mount fixedly connected with in the bellows outside, the furnace body top fixedly connected with motor of quick cooling section, the output of motor is connected with the lead screw, the lead screw keep away from the other end of motor connect in the mount, lead screw threaded connection has the fly leaf, the furnace body inner wall of quick cooling section with be connected with the gag lever post between the mount, the gag lever post wears to locate the fly leaf, the fly leaf is connected with the support, the support is kept away from the one end of fly leaf is connected with the connecting rod, the grid tray connect in the connecting rod.

Through adopting above-mentioned technical scheme, motor drive lead screw rotates, drives the fly leaf and moves along the directional direction of gag lever post, and the fly leaf drives support and connecting rod motion to realize the motion of grid tray direction, thereby grid tray motion changes the direction of cold wind, conveniently adjusts the direction of the cold wind that gets into the cooling zone.

Optionally, the connecting rod rotate connect in the roof of bellows, the connecting rod keep away from the slotted hole has been seted up to the one end of the roof of bellows, the slotted hole cover is equipped with the connecting axle, connecting axle fixed connection in the grid tray.

Through adopting above-mentioned technical scheme, through rotating the connection, the lower extreme of connecting rod can rotate, and the connecting rod rotates and makes the connecting axle in the slotted hole can drive grid tray motion to adjust the orientation of air inlet.

Optionally, a sealing sleeve is arranged above the furnace body of the rapid cooling section, and the sealing sleeve is sleeved on the outer side of the motor.

By adopting the technical scheme, the sealing sleeve enables the motor to be in sealing connection with the furnace body, so that the phenomenon that external air enters the cooling section to oxidize a powder metallurgy product is reduced.

Optionally, the heat exchange circulation area is arranged at the bottom of the quick cooling section and extends to one side, and a plurality of groups of heat exchangers are arranged in the heat exchange circulation area.

Through adopting above-mentioned technical scheme, the heat exchanger is used for dispeling the heat to the cold wind after the cooling, reduces the temperature of cold wind again.

Optionally, a filtering chamber is arranged inside the circulating fan.

By adopting the technical scheme, powder metallurgy products possibly carried in cold air are filtered through the filter chamber.

In summary, the present application has the following beneficial effects:

1. the circulating fan blows cold air into the cooling section, the cold air is conveyed in the air supply area, enters the cooling area and rapidly cools powder alloy products on the mesh belt, the temperature of the cold air rises and moves to reach the heat exchange circulating area, the temperature of the cold air is reduced again, and accordingly circulation is formed in the circulating fan. The whole loop is concentrated in the quick cooling section, so that the occupied space of the quick cooling structure is reduced, and the small sintering furnace can be used, so that the installation difficulty is reduced.

2. The motor drives the screw rod to rotate, drives the movable plate to directionally move along the direction of the limiting rod, and drives the support and the connecting rod to move, so that the movement of the grid plate in the direction is realized, the direction of cold air is changed by the movement of the grid plate, and the direction of the cold air entering the cooling area is conveniently adjusted.

Drawings

FIG. 1 is a schematic plan view of the whole structure of the embodiment of the present application;

fig. 2 is a schematic plan view of another angle of the whole embodiment of the present application.

Reference numerals illustrate: 1. a cooling section; 11. a wind supply area; 12. a cooling zone; 13. a heat exchange circulation zone; 2. an air outlet; 21. a wind box; 22. an air duct; 23. a grid plate; 3. a fixing frame; 31. a screw rod; 32. a motor; 33. a movable plate; 34. a bracket; 35. a connecting rod; 36. a connecting shaft; 4. a mesh belt; 41. a powder metallurgical article; 5. sealing sleeve; 6. a heat exchanger; 7. and an air inlet.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-2.

The embodiment of the application discloses a compact rapid cooling structure. Referring to fig. 1, a compact rapid cooling structure comprises a rapid cooling section, wherein the rapid cooling section is arranged behind a high-temperature sintering zone of a sintering furnace, the rapid cooling section comprises a wind supply zone 11, a cooling zone 12 and a heat exchange circulation zone 13 which are sequentially communicated, a circulating fan is arranged above a furnace body of the rapid cooling section, an air outlet 2 of the circulating fan is communicated with the wind supply zone 11, and the heat exchange circulation zone 13 is communicated with an air inlet 7 of the circulating fan.

The air-sending area 11 sends cold air to the cooling area 12, the powder alloy product is cooled in the cooling area 12, the cooled cold air is heated and moves to the heat exchange circulation area 13 to dissipate heat and reduce the temperature again, and the cold air after heat exchange can return to the air-sending area 11 again for circulation. The whole circulation loop is intensively and compactly arranged in the quick cooling section, so that the occupied space of the quick cooling structure is small, the device can be used in a small sintering furnace, and the installation strength is reduced.

The top of the air supply area 11 is connected with an air box 21, the air box 21 is communicated with an air outlet 2 of the circulating fan, cold air is blown out from the circulating fan to be stored in the air box 21, an adjustable grid plate 23 is arranged on the inner side of the air box 21, and the grid plate 23 is used for scattering the cold air into multiple directions. The end of the bellows 21, which is far away from the circulating fan, is communicated with a plurality of air pipes 22, and cold air is blown out through the plurality of air pipes 22 to reach the cooling area 12, so that the cold air is uniformly distributed.

The bellows 21 is still connected with the adjusting part who is used for adjusting grid tray 23, and adjusting part includes fixed frame 3 in the bellows 21 outside, is connected with lead screw 31 and gag lever post between the furnace body roof of fixed frame 3 and cooling zone 1, and the length direction of lead screw 31 and gag lever post keeps parallelism, and lead screw 31 threaded connection has fly leaf 33, and the gag lever post wears to locate fly leaf 33, realizes the directional removal of fly leaf 33 along the gag lever post through rotating lead screw 31. A motor 32 is fixedly connected above the cooling section 1 furnace body, a screw rod 31 is connected to the output end of the motor 32, and the motor 32 is used for driving the screw rod 31 to rotate. The movable plate 33 is connected with a support 34, one end of the support 34 away from the movable plate 33 is connected with a connecting rod 35, the connecting rod 35 presents an L shape, one end of the connecting rod 35 is rotationally connected to the top wall of the air box 21, one end of the connecting rod 35 away from the top wall of the air box 21 is provided with a slotted hole, the slotted hole is connected with a connecting shaft 36, and the connecting shaft 36 is fixedly connected to the grid plate 23.

The motor 32 operates to drive the screw rod 31 to rotate, the movable plate 33 is driven to move along the direction of the limiting rod, the movable plate 33 moves to drive the bracket 34 and the connecting rod 35 to move, the connecting rod 35 rotates to drive the grid plate 23 to rotate through the connecting shaft 36 in the slotted hole, and accordingly the direction of cold air moving by the grid plate 23 is changed.

The sealing sleeve 5 is arranged above the furnace body of the quick cooling section, and the sealing sleeve 5 is sleeved outside the motor 32, so that the tightness of connection between the motor 32 and the screw rod 31 is enhanced, the whole quick cooling section is in a sealing state, and the possibility that external air enters the cooling section 1 to cause oxidation of the powder metallurgy product 41 is reduced.

The cooling zone 12 is internally penetrated with a mesh belt 4, the mesh belt 4 is supported with a powder metallurgy product 41, the mesh belt 4 drives the powder metallurgy product 41 to move in the cooling zone 12, the mesh belt 4 is arranged right below a plurality of air pipes 22, the air pipes 22 blow out cold air, and the cold air rapidly cools the powder metallurgy product 41 above the mesh belt 4.

The heat exchange circulation zone 13 is arranged at the bottom of the quick cooling section and extends to one side, three groups of heat exchangers 6 are arranged in the heat exchange circulation zone 13, two groups of heat exchangers 6 are respectively positioned at the side edges of the air supply section and the cooling section 1, the three groups of heat exchangers 6 are used for radiating cold air in sequence, and the heat exchange circulation zone 13 is provided with a larger radiating area, so that better radiating of the cold air is realized. The outlet of the heat exchange circulation zone 13 is communicated with the air inlet 7 of the circulation fan, the temperature of the cold air is reduced again after heat dissipation, and the cold air returns to the circulation fan and is blown into the air box 21. The inside of the circulating fan is also provided with a filtering chamber which can remove powder alloy products possibly carried in the cold air.

The implementation principle of the compact rapid cooling structure in the embodiment of the application is as follows: after the powder alloy product is sintered at high temperature in the sintering furnace, the mesh belt 4 conveys the powder alloy product to the cooling area 12, a fan is started to blow cold air into the air box 21, the grid plate 23 breaks up the cold air and changes the air outlet direction of the cold air, the cold air is blown out from the air pipes 22 to rapidly cool the powder metallurgy product 41, the cold air enters the heat exchange circulation area 13 to be in contact with the three groups of heat exchangers 6 for heat dissipation, and the cold air returns to the circulation fan to be blown out again after being filtered, so that the recycling of the cold air is completed.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.

Claims

1. The utility model provides a compact rapid cooling structure, its characterized in that is provided with quick cooling section behind the high temperature sintering district of fritting furnace, quick cooling section is including air supply district (11), cooling district (12) and heat transfer circulation district (13) that communicate each other in proper order, quick cooling section's furnace body top is provided with circulating fan, air supply district (11) communicate in circulating fan's air outlet (2), cooling district (12) run through have guipure (4), guipure (4) bearing has powder metallurgy goods (41), guipure (4) are followed cooling district (12) are march, heat transfer circulation district (13) communicate in circulating fan's air intake (7).

2. A compact flash cooling structure as in claim 1, wherein: the air supply area (11) is provided with an air box (21) connected to the top end of the quick cooling section, the air box (21) is communicated with an air outlet (2) of the fan, one side, away from the fan, of the air box (21) is communicated with a plurality of air pipes (22), and the air pipes (22) face the upper surface of the mesh belt (4).

3. A compact flash cooling structure as in claim 2, wherein: grid plates (23) are arranged on the inner side of the bellows (21) in an array mode, and the bellows (21) is connected with an adjusting assembly used for adjusting the grid plates (23).

4. A compact rapid cooling structure according to claim 3, characterized in that: the utility model provides a quick cooling device, including adjusting part, including mount (3), mount (3) fixedly connected with in bellows (21) outside, furnace body top fixedly connected with motor (32) of quick cooling section, the output of motor (32) is connected with lead screw (31), lead screw (31) keep away from the other end of motor (32) connect in mount (3), lead screw (31) threaded connection has fly leaf (33), the furnace body inner wall of quick cooling section with be connected with the gag lever post between mount (3), the gag lever post wears to locate fly leaf (33), fly leaf (33) are connected with support (34), support (34) are kept away from the one end of fly leaf (33) is connected with connecting rod (35), grid tray (23) connect in connecting rod (35).

5. A compact flash cooling structure as in claim 4, wherein: the connecting rod (35) is rotationally connected to the top wall of the air box (21), a slotted hole is formed in one end, away from the top wall of the air box (21), of the connecting rod (35), a connecting shaft (36) is connected to the slotted hole, and the connecting shaft (36) is fixedly connected to the grid plate (23).

6. A compact flash cooling structure as in claim 4, wherein: a sealing sleeve (5) is arranged above the furnace body of the quick cooling section, and the sealing sleeve (5) is sleeved outside the motor (32).

7. A compact flash cooling structure as in claim 1, wherein: the heat exchange circulation area (13) is arranged at the bottom of the quick cooling section and extends to one side, and a plurality of groups of heat exchangers (6) are arranged in the heat exchange circulation area (13).

8. A compact flash cooling structure as in claim 1, wherein: the circulating fan is internally provided with a filtering chamber.