Sealing water-cooled motor device of vacuum furnace

Abstract

The utility model relates to the technical field of water-cooling motors, in particular to a vacuum furnace sealing water-cooling motor device, which comprises at least one group of water-cooling mechanisms, each water-cooling mechanism comprises a double-layer water jacket and a water-cooling motor, and the double-layer water jackets are fixedly connected between the water-cooling motors and a furnace body of a vacuum furnace. A sealing piece is further arranged between the double-layer water jacket and the furnace body of the vacuum furnace; a rotating shaft on the water-cooled motor penetrates through the double-layer water jacket and then extends into the furnace body of the vacuum furnace; the double-layer water jacket is provided with a water inlet and a first flow guide port, the water cooling motor is provided with a water outlet and a second flow guide port, and the first flow guide port and the second flow guide port are connected through a first pipeline. According to the vacuum furnace sealing water-cooled motor device, cooling and heat dissipation are carried out on the sealing element and the bearing on the water-cooled motor, the damage probability of the sealing ring and the bearing is reduced, the cooling effect is good, and gas leakage in the vacuum furnace is effectively avoided through the sealing element.

Description

Technical Field

[0001] The utility model relates to the technical field of water-cooled motors, in particular to a sealed water-cooled motor device for a vacuum furnace. Background Art

[0002] In the final stage of vacuum furnace annealing production, the cooling fan needs to be turned on to cool the coil (aluminum coil) in the furnace. The function of the cooling fan is to force the gas to circulate and exchange heat with the condenser, thereby lowering the temperature of the coil.

[0003] It turns out that the old cooling fan has the following problems:

[0004] First, the old cooling fan uses a dynamic seal, namely a skeleton oil seal. Because the rotating shaft is easily exposed to high temperatures in the high temperature environment of the furnace, the lack of a cooling device will cause the temperature of the seal on the furnace body to rise. Long-term operation can easily lead to reduced sealing effectiveness and even seal wear, resulting in poor sealing and air leakage. A small amount of air leakage in a vacuum furnace can easily cause the oxide film on the material coil to be thick, while a large amount of air leakage can easily cause the entire furnace of material coils to be oxidized and scrapped, resulting in significant economic losses.

[0005] Second, the rotating shaft can easily transfer the high temperature in the furnace to the bearings on the furnace body, causing high temperature of the bearings, which are easily damaged, causing greater vibration, and wear of the bearing chamber. Repairs are difficult and require the old cooling fan base to be cut as a whole and then re-welded to the furnace body, which is a lot of work.

[0006] Therefore, a vacuum furnace sealed water-cooled motor device is urgently needed to solve the above problems. Utility Model Content

[0007] In order to solve the technical problem that the rotating shaft of the old cooling fan easily conducts the high temperature in the furnace to the sealing position and bearings on the furnace body, thereby increasing their temperature, the utility model provides a sealed water-cooled motor device for a vacuum furnace, which cools and dissipates heat for the seals and bearings on the water-cooled motor, reducing the probability of damage to the seals and bearings, achieving good cooling effect, and the seals effectively preventing gas leakage in the vacuum furnace.

[0008] The utility model provides a sealed water-cooled motor device for a vacuum furnace, comprising at least one water-cooling mechanism, wherein the water-cooling mechanism comprises a double-layer water jacket and a water-cooled motor, wherein the double-layer water jacket is fixedly connected between the water-cooled motor and a furnace body of the vacuum furnace, a sealing member is further provided between the double-layer water jacket and the furnace body of the vacuum furnace, and a rotating shaft on the water-cooled motor passes through the double-layer water jacket and reaches the interior of the furnace body of the vacuum furnace; a water inlet and a first guide port are provided on the double-layer water jacket, and a water outlet and a second guide port are provided on the water-cooled motor, wherein the first guide port and the second guide port are connected via a first pipe.

[0009] Furthermore, one end of the double-layer water jacket is fixedly connected to the end cover on the water-cooled motor, a fixing seat is provided on the furnace body of the vacuum furnace, the other end of the double-layer water jacket is fixedly connected to the fixing seat, the sealing member is located between the double-layer water jacket and the fixing seat, and the rotating shaft on the water-cooled motor passes through the double-layer water jacket and the fixing seat to the inside of the furnace body of the vacuum furnace.

[0010] Furthermore, a flange is provided at the end of the double-layer water jacket, which is fixedly connected to a mounting base via bolts. The sealing member is a first gasket located between the flange and the mounting base. Cooling water flowing through the double-layer water jacket cools the first gasket. The first gasket effectively prevents gas from leaking from the vacuum furnace between the double-layer water jacket and the mounting base, thereby reducing quality losses such as oxidation of the coil caused by air leakage.

[0011] Furthermore, a notch is provided on the furnace body of the vacuum furnace and a fixing seat is fixedly connected to the notch. The fixing seat is provided with an opening for the rotating shaft of the water-cooled motor to pass through.

[0012] Furthermore, the water-cooled motor includes a housing and two end caps fixedly connected at either end of the housing. The water outlet and second guide port are provided on the housing, one of the end caps being provided with a bearing. The double-layer water jacket is fixedly connected between the end cap with the bearing and the furnace body of the vacuum furnace. A rotating shaft is rotatably disposed within the housing, and the end of the rotating shaft passes through the bearing and the double-layer water jacket to the interior of the vacuum furnace body. Cooling water cools the bearings provided on the inner side of the end caps of the water-cooled motor.

[0013] Furthermore, a second gasket is provided between the housing and both end caps. This is to prevent air from leaking from the water-cooled motor during operation, which could cause external air to enter the housing. Because the vacuum furnace operates at negative pressure, a leak in the water-cooled motor could cause external air in the housing to be sucked into the vacuum furnace from the rotating shaft, potentially affecting the quality of the aluminum coil.

[0014] Furthermore, the end of the rotating shaft, which passes through the interior of the vacuum furnace, is fixedly connected to a large-diameter impeller. Conventional cooling fans have low air volume, resulting in a long cooling time for the coils. Therefore, a large-diameter impeller is used in this embodiment. The rotating shaft drives the large-diameter impeller to rotate, generating a large air volume and thus shortening the cooling time for the coils.

[0015] Furthermore, a plurality of the water cooling mechanisms are provided, and one water inlet and another water outlet on two adjacent water cooling mechanisms are connected via a second pipe.

[0016] Compared with the prior art, the present invention has the following technical effects:

[0017] The sealed water-cooled motor device for vacuum furnaces is used in the annealing process of vacuum furnaces to reduce the temperature of the rotating shaft, seals and bearings on the water-cooled motor, improve the cooling effect, and reduce the cooling time. It replaces the leakage caused by the wear of the skeleton oil seal of the old cooling fan and the damage to the bearings on the furnace body. It also reduces the oxidation of the coils and the quality defects of thick oxide film in the annealing cooling stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a sealed water-cooled motor device for a vacuum furnace according to the present invention;

[0019] Figure 2 This utility model Figure 1 A schematic diagram of the structure of the middle part;

[0020] Figure 3 This utility model Figure 1 A magnified schematic diagram of the structure of middle B;

[0021] The reference numerals in the accompanying drawings are:

[0022] 1. Water-cooled motor; 11. Rotating shaft; 12. Water outlet; 13. Second diversion port;

[0023] 2. Double-layer water jacket; 21. Water inlet; 22. First diversion port;

[0024] 3. Vacuum furnace; 31. Furnace body; 32. Furnace door; 33. Furnace chamber; 34. Cooler;

[0025] 4. First sealing gasket;

[0026] 5. Fixed seat; 51. Opening; 6. Flange; 7. Second sealing gasket; 8. Large diameter impeller. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 3As shown, a sealed water-cooled motor device for a vacuum furnace includes at least one water-cooling mechanism, wherein the water-cooling mechanism includes a double-layer water jacket 2 and a water-cooled motor 1. The double-layer water jacket 2 is fixedly connected between the water-cooled motor 1 and the furnace body 31 of the vacuum furnace 3. Specifically, one end of the double-layer water jacket 2 is fixedly connected to the end cover on the water-cooled motor 1. A fixing seat 5 is provided on the furnace body 31 of the vacuum furnace 3. The other end of the double-layer water jacket 2 is fixedly connected to the fixing seat 5. A sealing member is also provided between the double-layer water jacket 2 and the furnace body 31 of the vacuum furnace 3. That is, the seal is located between the double-layer water jacket 2 and the fixed seat 5. The rotating shaft 11 of the water-cooled motor 1 passes through the double-layer water jacket 2 and then into the furnace body 31 of the vacuum furnace 3. Of course, the rotating shaft 11 of the water-cooled motor 1 passes through the double-layer water jacket 2 and the fixed seat 5 in sequence before entering the furnace body 31 of the vacuum furnace 3. The double-layer water jacket 2 is provided with a water inlet 21 and a first guide port 22, and the water-cooled motor 1 is provided with a water outlet 12 and a second guide port 13. The first guide port 22 and the second guide port 13 are connected by a first pipe. The structure of the double-layer water jacket 2 and the water-cooled motor 1 is prior art and will not be described here.

[0029] The external cooling water is circulated through the water inlet 21, the channel of the double-layer water jacket 2, the first guide port 22, the second guide port 13 and the water outlet 12. The external device supplies cooling water to ensure that the cooling water can be recycled.

[0030] When the water-cooled motor 1 drives the rotating shaft 11 to rotate, the rotating shaft 11 generates heat itself and transmits the high temperature in the furnace, thereby increasing the temperature of the bearings and the temperature of the sealing components inside the water-cooled motor 1 .

[0031] External cooling water enters the channel of the double-layer water jacket 2 through the water inlet 21. Because one end of the double-layer water jacket 2 is fixedly connected to the end cap of the water-cooled motor 1 and the other end of the double-layer water jacket 2 is fixedly connected to the fixed seat 5, the cooling water flowing through the double-layer water jacket 2 can cool the bearings disposed on the water-cooled motor 1 and located inside the end cap, as well as the seals. The water cooling mechanism of this embodiment cools and dissipates heat from the seals and bearings of the water-cooled motor 1, increasing the reliability of the water-cooled motor 1 and reducing the risk of damage to the seals and bearings of the water-cooled motor 1 due to long-term high-temperature operation. This improves the cooling effect and reduces the cooling time. After the bearings are cooled and dissipated, the temperature of the rotating shaft 11 is further reduced, achieving cooling and heat dissipation of the rotating shaft 11. The cooling water then enters the water-cooled motor 1 through the first guide port 22 and the second guide port 13, thereby further cooling the bearings disposed on the water-cooled motor 1 and located inside the end cap.

[0032] In this embodiment, bearings are no longer provided on the furnace body 31 of the vacuum furnace 3, thereby preventing the bearings on the furnace body 31 of the vacuum furnace 3 from generating high temperatures. Instead, the water-cooled motor 1 is secured to the furnace body 31 of the vacuum furnace 3 via a double-layer water jacket 2. The rotating shaft 11 of the water-cooled motor 1 passes through the double-layer water jacket 2 and the fixing seat 5 before reaching the interior of the furnace body 31 of the vacuum furnace 3. A seal (a static seal) is provided between the double-layer water jacket 2 and the fixing seat 5. This seal prevents excessive temperatures and replaces the oil seal (a dynamic seal) of the conventional cooling fan. The seal effectively prevents gas from leaking from the double-layer water jacket 2 and the fixing seat 5 within the vacuum furnace 3, thereby reducing quality losses such as oxidation of the material coil (aluminum coil) caused by gas leakage.

[0033] The water-cooling mechanism of the sealed water-cooled motor device for a vacuum furnace of this embodiment is applied to the annealing process of the vacuum furnace 3. It reduces the temperature of the rotating shaft 11, the seal, and the bearings of the water-cooled motor 1 during the annealing and cooling stage of the material coil (specifically, electronic optical foil) in the vacuum furnace 3, thereby improving the cooling effect and reducing the cooling time. It replaces the air leakage caused by wear of the skeleton oil seal of the old cooling fan and the damage to the bearings of the furnace body 31, and also reduces the oxidation of the material coil and the quality defect of thick oxide film during the annealing and cooling stage.

[0034] The sealed water-cooled motor device for a vacuum furnace in this embodiment has a compact structure, cools and dissipates heat for the seal and the bearings on the water-cooled motor 1, reduces the probability of damage to the seal ring and the bearing, and has a good cooling effect. In addition, the seal effectively prevents the gas in the vacuum furnace 3 from leaking from between the double-layer water jacket 2 and the fixing seat 5, has good sealing performance, and greatly improves the reliability of the operation of the water-cooled motor 1.

[0035] In one embodiment, a flange 6 is provided at the end of the double-layer water jacket 2. The flange 6 is fixedly connected to the fixing seat 5 by bolts. The sealing member is a first gasket 4, which is located between the flange 6 and the fixing seat 5. The cooling water flowing through the double-layer water jacket 2 cools the first gasket 4. The first gasket 4 effectively prevents gas from leaking from the vacuum furnace 3 between the double-layer water jacket 2 and the fixing seat 5, thereby reducing quality losses such as oxidation of the coil caused by gas leakage.

[0036] As an implementable embodiment, a notch is provided on the furnace body 31 of the vacuum furnace 3 and the fixing seat 5 is fixedly connected to the notch. The fixing seat 5 can be fixed to the notch of the furnace body 31 by locking or welding. The fixing seat 5 is provided with an opening 51 for the rotating shaft 11 on the water-cooled motor 1 to pass through. Specifically, the rotating shaft 11 on the water-cooled motor 1 passes through the double-layer water jacket 2 and the opening 51 on the fixing seat 5 to the inside of the furnace body 31 of the vacuum furnace 3.

[0037] As an implementable embodiment, according to the requirements of the annealing stage of the vacuum furnace 3, multiple water-cooling mechanisms are provided, and one of the water inlets 21 and the other water outlet 12 on two adjacent water-cooling mechanisms are connected through a second pipe, that is, multiple water-cooling mechanisms realize the circulation of cooling water through the second pipe. Usually, the two water-cooling mechanisms located on the outside of the multiple water-cooling mechanisms are used to connect to external equipment that supplies cooling water.

[0038] As an implementable embodiment, the water-cooled motor 1 includes a housing and two end covers fixedly connected to both ends of the housing respectively. The housing and the two end covers can be fixedly connected by locking. The water outlet 12 and the second guide port 13 are provided on the housing, and a bearing is provided on one of the end covers. The double-layer water jacket 2 is fixedly connected between the end cover provided with the bearing and the furnace body 31 of the vacuum furnace 3. A rotating shaft 11 is rotatably provided in the housing, and the end of the rotating shaft 11 passes through the bearing and the double-layer water jacket 2 to the inside of the furnace body 31 of the vacuum furnace 3. The method of rotatably providing the rotating shaft 11 in the housing is prior art and will not be described here. Generally, in the prior art, the rotating shaft 11 is rotated by a stator and a magnetic steel assembly provided in the housing, and will not be described in detail here. The cooling water can cool the bearings on the inner side of the end cover provided on the water-cooled motor 1.

[0039] As an embodiment, a second sealing gasket 7 is provided between the housing and both end caps. The second sealing gasket 7 is provided to prevent air leakage from the water-cooled motor 1 during operation, thereby preventing external air from entering the housing. Because the vacuum furnace 3 is under negative pressure, any air leakage from the water-cooled motor 1 will cause external air in the housing to be sucked into the vacuum furnace 3 from the location of the rotating shaft 11, thereby affecting the quality of the aluminum coil.

[0040] As one possible implementation, the end of the rotating shaft 11, which passes through the interior of the vacuum furnace 3's furnace body 31, is fixedly connected to the large-diameter impeller 8 via bolts and nuts. Conventional cooling fans have low airflow, resulting in a long cooling time for the coils. Therefore, a large-diameter impeller 8 is used in this embodiment. The rotating shaft 11 drives the large-diameter impeller 8 to rotate, generating a high airflow and thus shortening the coil cooling time.

[0041] As an implementable embodiment, a furnace door 32 is provided on the furnace body 31 of the vacuum furnace 3, and a cooler 34 and a furnace 33 are provided inside the furnace body 31 of the vacuum furnace 3. Two air vents are relatively provided on the furnace 33, and the cooler 34 is located between the large-diameter impeller 8 and one of the air vents. Among them, two air gates are slidingly provided on the furnace 33, and the air gates are used to open or close the air vents. Specifically, the sliding method of the air gates is the existing technology and is not described here. During the vacuum annealing cooling stage of the material coil (specifically, it can be electronic light foil), the two air gates are opened, and the vacuum furnace sealed water-cooled motor device of this embodiment is used to gradually reduce the temperature inside the furnace 33 and the temperature of the material coil. At the same time, the heat generated by the water-cooled motor 1 itself and the heat conducted by the rotating shaft 11 are taken away in time, which well protects the first sealing gasket 4 and the bearings on the water-cooled motor 1 and improves the operational reliability.

[0042] The embodiments described above are only preferred embodiments of the present invention and are only used to explain the present invention, not to limit the scope of implementation of the present invention. For those skilled in the art, it is of course possible to easily make other implementation methods by replacing or changing the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A sealed water-cooled motor device for a vacuum furnace, comprising at least one water-cooling mechanism, characterized in that: The water cooling mechanism comprises a double-layer water jacket (2) and a water-cooled motor (1); the double-layer water jacket (2) is fixedly connected between the water-cooled motor (1) and a furnace body (31) of a vacuum furnace (3); a sealing member is further provided between the double-layer water jacket (2) and the furnace body (31) of the vacuum furnace (3); a rotating shaft (11) on the water-cooled motor (1) passes through the double-layer water jacket (2) and reaches the interior of the furnace body (31) of the vacuum furnace (3); a water inlet (21) and a first guide port (22) are provided on the double-layer water jacket (2); a water outlet (12) and a second guide port (13) are provided on the water-cooled motor (1); the first guide port (22) and the second guide port (13) are connected via a first pipe.

2. The vacuum furnace sealed water-cooled motor device according to claim 1, characterized in that: One end of the double-layer water jacket (2) is fixedly connected to the end cover on the water-cooled motor (1); a fixing seat (5) is provided on the furnace body (31) of the vacuum furnace (3); the other end of the double-layer water jacket (2) is fixedly connected to the fixing seat (5); the sealing member is located between the double-layer water jacket (2) and the fixing seat (5); and the rotating shaft (11) on the water-cooled motor (1) passes through the double-layer water jacket (2) and the fixing seat (5) and reaches the interior of the furnace body (31) of the vacuum furnace (3).

3. The vacuum furnace sealed water-cooled motor device according to claim 2, characterized in that: A flange (6) is provided at the end of the double-layer water jacket (2); the flange (6) and the fixing seat (5) are fixedly connected by bolts; the sealing member is a first sealing gasket (4); and the first sealing gasket (4) is located between the flange (6) and the fixing seat (5).

4. The vacuum furnace sealed water-cooled motor device according to claim 2, characterized in that: A notch is provided on the furnace body (31) of the vacuum furnace (3) and a fixing seat (5) is fixedly connected to the notch. The fixing seat (5) is provided with an opening (51) for the rotating shaft (11) on the water-cooled motor (1) to pass through.

5. The vacuum furnace sealed water-cooled motor device according to claim 1, characterized in that: The water-cooled motor (1) comprises a housing and two end covers fixedly connected to both ends of the housing, the water outlet (12) and the second guide port (13) are arranged on the housing, one of the end covers is provided with a bearing, the double-layer water jacket (2) is fixedly connected between the end cover provided with the bearing and the furnace body (31) of the vacuum furnace (3), a rotating shaft (11) is rotatably arranged in the housing, and the end of the rotating shaft (11) passes through the bearing and the double-layer water jacket (2) to the interior of the furnace body (31) of the vacuum furnace (3).

6. The vacuum furnace sealed water-cooled motor device according to claim 5, characterized in that: A second sealing gasket (7) is provided between the shell and the two end covers.

7. The vacuum furnace sealed water-cooled motor device according to claim 5, characterized in that: The end of the rotating shaft (11) passing through the furnace body (31) of the vacuum furnace (3) is fixedly connected to the large-diameter impeller (8).

8. The vacuum furnace sealed water-cooled motor device according to claim 1, characterized in that: There are multiple water cooling mechanisms, and one water inlet (21) and another water outlet (12) on two adjacent water cooling mechanisms are connected via a second pipe.

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