CN111207596A

CN111207596A - Cooling system

Info

Publication number: CN111207596A
Application number: CN202010142024.6A
Authority: CN
Inventors: 刘鹏; 徐文立; 胡芳; 黄徐炯; 高炀
Original assignee: Ningbo Hiper Vacuum Technology Co Ltd
Current assignee: Ningbo Hiper Vacuum Technology Co Ltd
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2020-05-29

Abstract

The invention discloses a cooling system, which relates to the technical field of cooling devices, and comprises a furnace body, wherein a heat insulation cylinder is arranged in the furnace body, a heat insulation door is arranged at the end part of the heat insulation cylinder, an openable end socket is arranged at the end part of the furnace body, and a cooling mechanism is arranged on the end socket; the cooling mechanism comprises a cooler, an impeller and a driving device; the impeller set up in thermal-insulated door ring with between the medial surface of head, drive arrangement is used for the drive the impeller cools off the furnace body through letting in recirculated cooling water to the cooling jacket of furnace body, realizes the inside air current circulation of furnace body through cooling body, passes through the cooler with the inside heat of furnace body and discharges, and two kinds of cooling methods cooperate, cool off fast and efficient, can shorten production cycle greatly, improve production efficiency.

Description

Cooling system

Technical Field

The invention relates to the technical field of cooling devices, in particular to a cooling system.

Background

Sintering furnaces are widely used in industrial production, and because high-temperature sintering raises the temperature in the furnace to a very high level, subsequent cooling often takes a long time to wait for the temperature in the furnace to drop. The cooling generally comprises sealed cooling and natural cooling, wherein the sealed cooling is that the sintering furnace enters a cooling process, the heating is stopped, and inert gas with certain pressure is filled in to cool the product under certain pressure. The natural cooling is that the sintering furnace enters a cooling process, heating is stopped, and gas is not filled, so that the product is cooled down in a natural state. In the case of a pressure sintering furnace, the cooling speed is proportional to the pressure, the cooling speed is higher when the pressure is higher, and the cooling effect is still better, particularly, the pressure of 3-4 MPa is charged in the pressure sintering furnace with the volume of about 3 cubic meters under high pressure, and the cooling speed is about 10 hours. However, in the vacuum sintering furnace, the cooling (filling pressure below atmospheric pressure) and natural cooling are sealed in vacuum, and the cooling time is very long, and some cooling times even reach 1-2 days. The larger the furnace type is, the larger the heat capacity in the furnace is, and the longer the cooling time is. The production efficiency is an important guarantee for enterprise development, the production time is too long, the production efficiency is not high, and many orders can be missed.

Disclosure of Invention

In order to solve the technical problems, the invention provides a cooling system, which can quickly cool a furnace, shorten the production period and improve the production efficiency.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a cooling system which comprises a heat insulation cylinder arranged in a furnace body, wherein a heat insulation door is arranged at the end part of the heat insulation cylinder, an openable end socket is arranged at the end part of the furnace body, and a cooling mechanism is arranged on the end socket.

Optionally, the cooling mechanism comprises a cooler, an impeller and a driving device; the impeller is arranged between the heat insulation door ring and the inner side face of the seal head, and the driving device is used for driving the impeller.

Optionally, the cooling mechanism further includes a wind shield, and the wind shield is disposed between the cooler and the heat insulation cylinder.

Optionally, the driving device includes a housing, a stator, a rotating shaft, a rotor, a connecting terminal and a driving jacket; the stator is arranged on the inner wall of the shell, the rotating shaft is rotatably arranged in the middle of the shell, and the output end of the rotating shaft is in transmission connection with the impeller; the rotor is sleeved on the rotating shaft; the driving jacket is arranged outside the shell; a first flange is arranged at one end of the shell, a first sealing strip is arranged between the first flange and the end part of the shell, and the end part of the shell is sealed through the first flange and the first sealing strip; one end of the first flange is provided with a wiring terminal which is hermetically fixed on the first flange; a second flange is arranged at the other end of the shell, a through hole is formed in the second flange and is used for communicating the interior of the shell with the interior of the furnace body, a second sealing strip is arranged between the second flange and the end part of the shell, and the end part of the shell is sealed by the second flange and the second sealing strip; a third sealing strip is arranged between the second flange and the furnace body flange and seals the end face of the second flange with the end face of the furnace body flange; a circulating cooling water cavity is arranged inside the second flange; and cooling water is introduced into the driving jacket to cool the stator.

Optionally, the driving device is an electric driving device.

Optionally, the driving device comprises a magnetic fluid sealing transmission structure; the magnetic fluid sealing transmission structure comprises a furnace body flange, a sealing shell, a main shaft, a magnetic fluid vacuum transmission assembly and a rotary joint; the sealing shell is fixed on the sealing head by the flange, and the main shaft penetrates through the sealing shell and the furnace body flange; the impeller is arranged at one end of the main shaft, and the other end of the main shaft is connected with the driving device; the magnetic fluid vacuum transmission assembly is arranged in the middle of the main shaft; the end, far away from the head, of the main shaft is a hollow shaft, the rotary joint is arranged at the end, far away from the end of the head, of the main shaft, and cooling water inlet water and cooling water return water are arranged on the rotary joint.

Optionally, the housing includes a drive jacket, and the drive jacket is provided with a first inlet and a first outlet.

Optionally, the cooler is a ring cooler or a square cooler.

Optionally, a heat insulation door ring is arranged at an end of the heat insulation cylinder, and the heat insulation door is used for plugging the heat insulation door ring.

Optionally, the furnace body comprises a cooling jacket, and circulating cooling water is introduced into the cooling jacket;

optionally, a plurality of flow blocking fins are arranged on the inner wall of the furnace body.

Compared with the prior art, the invention has the following technical effects:

according to the cooling system disclosed by the invention, the furnace body is cooled by introducing circulating cooling water into the cooling jacket of the furnace body, airflow circulation inside the furnace body is realized through the cooling mechanism, heat inside the furnace body is discharged through the cooler, the two cooling modes are matched, the cooling is quick and efficient, the production period can be greatly shortened, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of the cooling system of the present invention;

FIG. 2 is a schematic structural view of a baffle fin in the cooling system of the present invention;

FIG. 3 is a schematic view of a square cooler in the cooling system of the present invention;

FIG. 4 is a schematic view of an electric driving device in the cooling system of the present invention;

FIG. 5 is a schematic structural view of a second flange of the electric driving device in the cooling system of the present invention;

FIG. 6 is a schematic structural diagram of another embodiment of the cooling system of the present invention;

FIG. 7 is a schematic view of the configuration of the annular cooler in the cooling system of the present invention;

FIG. 8 is a schematic view of another configuration of the annular cooler of the cooling system of the present invention;

FIG. 9 is a schematic structural view of a further embodiment of the cooling system of the present invention;

FIG. 10 is a schematic structural view of a further embodiment of a cooling system according to the present invention;

FIG. 11 is a side view of the structure of FIG. 10;

FIG. 12 is a schematic structural diagram of a magnetic fluid seal transmission structure in the cooling system of the present invention.

Description of reference numerals: 1. a heat insulating cylinder; 2. a flow blocking fin; 3. a thermally insulated door ring; 4. a heat-insulating door; 5. a windshield; 6. a cooler; 7. an impeller; 8. a drive device; 9. a cooling jacket; 10. a furnace body; 11. a branch coil pipe; 12. a fin; 21. an electric device; 22. a pulley transmission; 23. the magnetic fluid seals the drive structure; 8-1, a rotating shaft; 8-2, a first bearing; 8-3, a stator; 8-4, a rotor; 8-5, a second bearing; 8-6, a safety cover; 8-7, a first flange; 8-8, a driving jacket; 8-9, a shell; 8-10 parts of a second flange; 8-11, through holes; 8-12, fastening screws; 8-13 parts of a wiring terminal; 8-14, terminal flange;

23-1, a furnace body flange; 23-2, bearing pressing rings; 23-3, sealing the shell; 23-4, a magnetic fluid vacuum transmission component; 23-5, a rear end cover; 23-6, oil nozzle; 23-7, bearing gland; 23-8, a belt pulley; 23-9, a main shaft; 23-10, a rotary joint; 23-11, cylindrical roller bearings; 23-12 and deep groove ball bearings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1, the present embodiment provides a cooling system, the sintering furnace includes a furnace body 10, a heat insulation cylinder 1 is disposed inside the furnace body 10, a heat insulation door 4 is disposed at an end of the heat insulation cylinder 1, an openable end socket is disposed at an end of the furnace body 10, and a cooling mechanism is disposed on the end socket.

In this embodiment, as shown in fig. 1-5, the cooling mechanism includes a cooler 6, an impeller 7, and a drive device 8; the impeller 7 is arranged between the heat insulation door ring 3 and the inner side surface of the seal head, and the driving device 8 is used for driving the impeller 7.

The cooling mechanism further comprises a wind shield 5, and the wind shield 5 is arranged between the cooler 6 and the heat insulation barrel 1.

The driving device 8 comprises a shell 8-9, a stator 8-3, a rotating shaft 8-1, a rotor 8-4, a wiring terminal 8-13 and a driving jacket 8-8; the stator 8-3 is arranged on the inner wall of the shell 8-9, the head of the fastening screw 8-12 is inserted into a fixing hole of the stator 8-3 in a fixing mode, and the stator 8-3 can be fixed on the shell 8-9 in a shrink fit mode to ensure the stator to be fixed; the rotating shaft 8-1 is rotatably arranged in the middle of the shell 8-9, and the output end of the rotating shaft 8-1 is in transmission connection with the impeller; the rotor 8-4 is sleeved on the rotating shaft 8-1; the driving jacket 8-8 is arranged outside the shell 8-9; a first flange 8-7 is arranged at one end of the shell 8-9, a first sealing strip is arranged between the first flange 8-7 and the end part of the shell 8-9, and the end part of the shell is sealed by the first flange 8-7 and the first sealing strip; the first flange 8-7 is provided with a terminal flange 8-14, the terminal flange 8-14 is fixed on the end face of the first flange in a sealing mode through a fourth sealing strip, the wiring terminal 8-13 is sealed with the terminal flange 8-14 through a fifth sealing strip, one end of the wiring terminal is further provided with a pressing plate, and the wiring terminal 8-13 is fixed on the terminal flange 8-14; a second flange 8-10 is arranged at the other end of the shell 8-9, a through hole 8-11 is formed in the second flange 8-10, the through hole 8-11 is used for communicating the inside of the shell 8-9 with the inside of the furnace body, a second sealing strip is arranged between the second flange 8-10 and the end part of the shell 8-9, the end part of the shell is sealed by the second flange 8-10 and the second sealing strip, a third sealing strip is arranged between the second flange 8-10 and the flange of the furnace body, the end face of the second flange 8-10 is sealed by the third sealing strip with the end face of the flange of the furnace body, therefore, the inside of the shell is communicated with the inside of the furnace body, and the inside of the shell; a circulating cooling water cavity is arranged inside the second flange 8-10; and cooling water is introduced into the driving jacket 8-8 and used for cooling the stator 8-3. The shell 8-9 comprises a driving jacket 8-8, and the driving jacket 8-8 is provided with a first inlet and a first outlet.

The rotating shaft 8-1 is not sealed with the second flange 8-10 due to rotation, and gas in the driving device can be rapidly pumped out by combining the through hole 8-11 on the second flange 8-10, so that the vacuum balance between the furnace and the driving device is realized, and the poor vacuum in the furnace caused by the unclean pumping of the gas in the driving device is avoided.

Circulating cooling water is introduced into the second flange 8-10, so that the temperature of the first bearing 8-2 can be reduced, and the first bearing 8-2 can work normally. Cooling water is introduced into the driving jacket 8-8 and used for reducing the temperature of the stator 8-3 and avoiding overburning of the stator 8-3.

The cooler 6 is a square cooler 6.

The end of the heat insulation barrel 1 is provided with a heat insulation door ring 3, and the heat insulation door 4 is used for plugging the heat insulation door ring 3. The furnace body 10 comprises a cooling jacket 9, and circulating cooling water is introduced into the cooling jacket 9; a plurality of flow blocking fins 2 are arranged on the inner wall of the furnace body 10.

Entering a cooling process, stopping heating, opening the heat insulation door 4, filling gas into the furnace, after reaching a certain pressure, starting a driving device, driving the impeller 7 to rotate, enabling the impeller 7 to adopt a centrifugal impeller to generate directional airflow, enabling the airflow to flow out from a channel between the heat insulation door ring 3 and the heat insulation door 4 through a bin, enabling the airflow to be converged into the cooler 6 under the action of the wind shield 5, discharging heat through cooling water in the cooler 6 through the branch coil 11 and the fins 12, enabling the airflow to enter the impeller 7 and flow out from the periphery of the impeller 7, then flowing through a channel between the heat insulation cylinder 1 and the inner wall of the furnace body 10, enabling the temperature of the outer wall of the heat insulation cylinder 1 to be much lower than that of the inner wall of the heat insulation cylinder 1, cooling through circulating water in the cooling jacket 9 of the furnace body 10, enabling the passing airflow to be more fully radiated, further reducing the temperature, and enabling the airflow to flow, make the air current more abundant contact with furnace body 10 inner wall, the heat in the air current is more abundant is absorbed by furnace body 10 inner wall, and the air current flows into in the heat insulating cylinder 1 from the passageway between the heat insulating door ring 3 and the heat insulating door 4 of the heat insulating cylinder 1 other end, absorbs the heat in the storage box again, through the dual cooling of cooler 6 and the cooling jacket 9 of furnace body 10, and the cooling effect is better, and cooling rate is faster.

Example two:

the present embodiment is an embodiment improved on the basis of the first embodiment.

As shown in fig. 6-9, in this embodiment, the cooler 6 is an annular cooler 6. And a group of cooling mechanisms are respectively arranged on the end sockets at the two ends of the furnace body 10. The cooling mechanism at the rear end of the furnace body 10 adopts the multi-layer cooler 6 shown in fig. 7, the cooling mechanism at the front end of the furnace body 10 adopts the single-layer cooler 6 shown in fig. 8, the airflow in the furnace body 10 flows from the bin to the rear end of the furnace body 10 and flows into the heat insulation cylinder 1 and the inner wall of the furnace body 10 through the cooler 6 at the rear end, and then flows into the heat insulation cylinder 1 through the cooler 6 at the front end of the furnace body 10 to cool the bin, and the triple cooling of the two coolers 6 and the cooling jacket 9 further shortens the cooling time and improves the cooling efficiency and the cooling effect.

Example three:

As shown in fig. 10 to 12, the driving device in the present embodiment includes a magnetic fluid seal transmission structure 23; the magnetic fluid sealing transmission structure 23 comprises a furnace body flange 23-1, a sealing shell 23-3, a main shaft 23-9, a magnetic fluid vacuum transmission assembly 23-4 and a rotary joint 23-10; the sealing shell 23-3 is fixed on the sealing head by the flange, and the main shaft 23-9 penetrates through the sealing shell 23-3 and the furnace body flange 23-1; the impeller 7 is arranged at one end of the main shaft 23-9, and the other end of the main shaft 23-9 is connected with the driving device; the magnetic fluid vacuum transmission assembly 23-4 is arranged in the middle of the main shaft 23-9; the end, far away from the end socket, of the main shaft 23-9 is a hollow shaft, the rotary joint 23-10 is arranged at the end part, far away from the end socket, of the main shaft 23-9, and cooling water inlet water and cooling water return water are arranged on the rotary joint 23-10.

A belt pulley 23-8 is arranged at the other end of the main shaft 23-9, and the power of the electric device 21 is transmitted to the main shaft 23-9 through belt transmission, so that the impeller 7 is driven.

The bearing inner ring rotates along with the main shaft 23-9, the bearing outer ring, the bearing pressing ring 23-2, the rear end cover 23-5 and the bearing pressing cover 23-7 are fixedly connected with the sealing shell 23-3, and the moving part and the fixed part are sealed through the magnetic fluid vacuum transmission assembly 23-4. The magnetic fluid is adopted for sealing, the magnetic fluid has no loss in the rotating process due to the special performance of the magnetic fluid, the sealing is reliable, the O-shaped ring can generate heat and be worn in the rotating process, and compared with the conventional O-shaped ring for direct sealing, the sealing performance is better, and the service life is longer. In order to ensure that the magnetic fluid works at the optimal working temperature, the hollow part of the main shaft 23-9 is cooled by cooling water, and a cooling water loop is arranged between the magnetic fluid vacuum transmission assembly 23-4 and the sealing shell 23-3 for cooling. In order to keep the main shaft 23-9 rotating and the water inlet and return joint not rotating, the rotary joint 23-10 is adopted for connection.

The driving motor is arranged externally, so that short circuit in vacuum caused by too small gap between the stator 8-3 and the rotor 8-4 of the motor when vacuum in the furnace is started is avoided. As the belt pulley transmission device 22 is used for transmission, the main shaft 23-9 is subjected to the offset load force given by the belt pulley 23-8, the cylindrical roller bearing 23-11 is selected as the bearing close to one side of the belt pulley 23-8, the radial force and the circumferential force can be simultaneously borne, and the service life of the fan is prolonged. The external arrangement of the motor can also facilitate the replacement outside the furnace body 10 when the motor is accidentally damaged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. The cooling system is characterized by comprising a heat insulation cylinder arranged inside a furnace body, wherein a heat insulation door is arranged at the end part of the heat insulation cylinder, an openable end socket is arranged at the end part of the furnace body, and a cooling mechanism is arranged on the end socket.

2. The cooling system of claim 1, wherein the cooling mechanism comprises a chiller, an impeller, and a drive; the impeller is arranged between the heat insulation door ring and the inner side face of the seal head, and the driving device is used for driving the impeller.

3. The cooling system of claim 2, wherein the cooling mechanism further comprises a windshield disposed between the cooler and the insulated canister.

4. The cooling system of claim 2, wherein the drive means comprises a housing, a stator, a shaft, a rotor, a terminal block, and a drive jacket; the stator is arranged on the inner wall of the shell, the rotating shaft is rotatably arranged in the middle of the shell, and the output end of the rotating shaft is in transmission connection with the impeller; the rotor is sleeved on the rotating shaft; the driving jacket is arranged outside the shell; a first flange is arranged at one end of the shell, a first sealing strip is arranged between the first flange and the end part of the shell, and the end part of the shell is sealed through the first flange and the first sealing strip; one end of the first flange is provided with a wiring terminal which is hermetically fixed on the first flange; a second flange is arranged at the other end of the shell, a through hole is formed in the second flange and is used for communicating the interior of the shell with the interior of the furnace body, a second sealing strip is arranged between the second flange and the end part of the shell, and the end part of the shell is sealed by the second flange and the second sealing strip; a third sealing strip is arranged between the second flange and the furnace body flange and seals the end face of the second flange with the end face of the furnace body flange; a circulating cooling water cavity is arranged inside the second flange; and cooling water is introduced into the driving jacket to cool the stator.

5. Cooling system according to claim 2 or 4, characterized in that the drive is an electric drive.

6. The fan cooling system on a sintering furnace of claim 2, wherein the driving device comprises a magnetic fluid seal transmission structure; the magnetic fluid sealing transmission structure comprises a furnace body flange, a sealing shell, a main shaft, a magnetic fluid vacuum transmission assembly and a rotary joint; the sealing shell is fixed on the sealing head by the flange, and the main shaft penetrates through the sealing shell and the furnace body flange; the impeller is arranged at one end of the main shaft, and the other end of the main shaft is connected with the driving device; the magnetic fluid vacuum transmission assembly is arranged in the middle of the main shaft; the end, far away from the head, of the main shaft is a hollow shaft, the rotary joint is arranged at the end, far away from the end of the head, of the main shaft, and cooling water inlet water and cooling water return water are arranged on the rotary joint.

7. The cooling system, as set forth in claim 4, wherein the housing comprises a drive jacket having a first inlet and a first outlet disposed thereon.

8. The cooling system of claim 2, wherein the cooler is a ring cooler or a square cooler.

9. The cooling system, as set forth in claim 1, wherein the end of the heat insulating cylinder is provided with a heat insulating door ring, the heat insulating door being used to close the heat insulating door ring.

10. The cooling system according to claim 1, wherein the furnace body comprises a cooling jacket, and circulating cooling water is introduced into the cooling jacket; optionally, a plurality of flow blocking fins are arranged on the inner wall of the furnace body.