Centrifugal defoaming machine with cooling and sealing device

Abstract

The utility model belongs to the technical field of centrifugal defoaming machines, and particularly relates to a centrifugal defoaming machine with a cooling and sealing device, which comprises a control system and a defoaming cavity connected with the control system, the defoaming cavity is connected with a vacuum component, a mixing tank is arranged in the defoaming cavity, a breather valve is arranged at the top end of the mixing tank, and the mixing tank is connected with a driving component. The driving assembly is arranged below the defoaming cavity, the output end of the driving assembly is connected with the mechanical sealing assembly, and a cooling box is arranged outside the mechanical sealing assembly and connected with the cooling assembly; the cooling assembly, the driving assembly and the breather valve are all connected with the control system. According to the centrifugal defoaming machine, bubbles in materials are eliminated through centrifugal force generated by high-speed operation, the purity and quality of the materials can be effectively improved, high stability can be kept during operation through an integrated cooling and sealing device, operation faults caused by temperature rise or poor sealing are avoided, and the service life of the materials is prolonged. Therefore, the continuity and the reliability of the production process are ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of centrifugal defoamer, specifically relating to a centrifugal defoamer with cooling and sealing devices. Background Technology

[0002] Centrifugal defoamers are commonly used in biotechnology, pharmaceuticals, and chemical industries. Their working principle involves using the centrifugal force generated by high-speed rotation to eliminate air bubbles in materials. However, the following technical challenges often arise during the use of centrifugal defoamers:

[0003] (1) Poor sealing: Under vacuum negative pressure conditions, conventional sealing rings are easily damaged due to the pressure difference between the internal refrigerant pressure and the external vacuum environment, resulting in a decrease in sealing performance. The decrease in sealing performance not only affects the sterile environment of the equipment, but may also lead to refrigerant leakage, further affecting the stability and safety of the equipment.

[0004] (2) Easy to generate heat: Mechanical seals generate a lot of heat when rotating at high speed. If heat is not dissipated in time, the heat will affect the performance and operational safety of the equipment. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides a centrifugal defoamer with cooling and sealing devices, which solves the problems of poor cooling and sealing performance of the mechanical seal in existing centrifugal defoamers.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A centrifugal defoamer with cooling and sealing devices is provided, including a control system and a defoaming chamber connected to the control system. The defoaming chamber is connected to a vacuum assembly. A mixing tank is provided inside the defoaming chamber. A breather valve is provided at the top of the mixing tank. The mixing tank is connected to a drive assembly, which is located below the defoaming chamber. The output end of the drive assembly is connected to a mechanical seal assembly. A cooling box is provided outside the mechanical seal assembly and is connected to a cooling assembly. The cooling assembly, drive assembly, and breather valve are all connected to the control system.

[0008] The mechanical seal assembly includes a sealing bushing, a rotating ring seat at one end of the sealing bushing, a driving ring at the other end of the sealing bushing, a rotating ring on the rotating ring seat, a stationary ring on the side of the rotating ring seat near the driving ring, a cooling box outside the stationary ring, and a cooling chamber formed between the cooling box and the stationary ring.

[0009] A first sealing ring is provided inside the sealing bushing, a second sealing ring is provided between the sealing bushing and the moving ring seat, and a third sealing ring is provided between the stationary ring and the cooling box. The first, second, and third sealing rings are all E-shaped sealing rings.

[0010] The beneficial effects of adopting the above technical solution are as follows: The control system allows for precise coordination of various components and mechanisms, ensuring the accuracy and stability of the defoaming process. Precise control optimizes defoaming efficiency while reducing energy consumption and failure rate. Furthermore, the connection between the defoaming chamber and the vacuum component provides a negative pressure environment for both the defoaming chamber and the mixing tank. This negative pressure environment facilitates the faster escape of bubbles from the material, thereby improving defoaming efficiency. The mixing tank within the defoaming chamber utilizes centrifugal force to effectively eliminate bubbles from the material during high-speed rotation of the drive component. Additionally, the breather valve located at the top of the mixing tank regulates and balances the air pressure inside the mixing tank and the defoaming chamber, preventing pressure surges caused by gases generated during material mixing or reaction. This ensures stable operation of the device under negative pressure conditions. Simultaneously, the breather valve prevents contaminants such as particles, dust, and bacteria from entering the mixing tank, guaranteeing the cleanliness of the material processing process. The mechanical seal assembly located at the output end of the drive component includes a sealing bushing, a rotating ring seat, a rotating ring, a stationary ring, and multiple E-type seals, forming a multi-layer sealing structure. This ensures sealing performance under vacuum negative pressure conditions. Compared to traditional O-type seals, E-type seals offer better fit and sealing performance. Furthermore, E-type seals provide better sealing performance when there is positive pressure of refrigerant in the inner cavity and negative vacuum pressure in the outer cavity, effectively improving sealing performance, reducing leakage risk, and extending the service life of the device. The cooling assembly connected to the mechanical seal assembly can circulate and cool the mechanical seal assembly, ensuring temperature stability during high-speed operation. The cooling chamber formed between the cooling box and the stationary ring not only helps to cool down the device, avoiding overheating issues caused by the centrifugal defoamer, but also reduces leakage risk, ensuring the stability and reliability of the device during operation.

[0011] This centrifugal defoamer integrates cooling and sealing devices, and the mechanical seal component adopts an E-shaped sealing ring design, which can form better sealing performance under refrigerant positive pressure and vacuum negative pressure environments, reducing the risk of leakage. It can also be cooled by the cooling component, avoiding operational failures or changes in material properties caused by device overheating, thereby ensuring the stability and safety of the operation process.

[0012] Furthermore, the cooling assembly includes a chiller, which is provided with a first inlet, a second inlet and a first outlet. The first outlet of the chiller is connected to one end of a first hose, and the other end of the first hose is connected to a third inlet. The second inlet of the chiller is connected to one end of a second hose, and the other end of the second hose is connected to a second outlet. The third inlet and the second outlet are both located on the cooling box.

[0013] The beneficial effects of adopting the above technical solution are as follows: the first water inlet of the chiller is used to receive the external low-temperature water source, while the first water outlet outputs the refrigerant (cooling water) cooled by the chiller. The first hose connects the first water outlet of the chiller and the second water inlet of the cooling tank, and the second hose connects the first water inlet of the chiller and the second water outlet of the cooling tank, forming a circulation path of the cooling medium between the cooling tank and the chiller. This allows the cooling medium to flow freely between the chiller and the cooling tank, achieving the purpose of cooling and helping to ensure the operational stability and safety of the device.

[0014] Furthermore, the drive assembly includes a first drive motor, a first rotating shaft is provided at the output end of the first drive motor, a first gear is provided on the first rotating shaft, the first gear is meshed with a second gear, a second rotating shaft is provided in the middle of the second gear, and a mechanical seal assembly is provided on the second rotating shaft.

[0015] Furthermore, a fixed base is provided at the end of the second rotating shaft away from the drive motor, a rotating disk is provided on the fixed base, a mixing tank is provided on the rotating disk, and a second cooling box is provided outside the second rotating shaft and the rotating disk. The second cooling box is connected to a chiller through a hose.

[0016] The beneficial effects of adopting the above technical solution are as follows: When the first drive motor starts, the first rotating shaft transmits rotational power to the first gear and the second gear, driving the second rotating shaft and the mechanical seal assembly to rotate, and transmitting the rotational force to the rotating disk. The rotation of the rotating disk realizes the centrifugal treatment of the material in the mixing tank, effectively improving the defoaming efficiency. Moreover, the mechanical seal can ensure the sealing performance of the centrifugal defoamer under vacuum negative pressure conditions, reducing the risk of leakage. The second cooling box is set outside the second rotating shaft and the rotating disk, and is connected to the chiller through a hose to form an effective cooling system. It can remove the heat generated by the centrifugal motion in time, avoid overheating of the equipment, and thus protect the mechanical seal assembly and other moving parts from high temperature damage, thereby extending the service life.

[0017] Furthermore, the vacuum assembly includes a vacuum pump, and the degassing chamber is provided with an exhaust port and an extraction port, with the extraction port connected to the vacuum pump via a pipe.

[0018] The beneficial effects of adopting the above technical solution are as follows: the vacuum pump is connected to the defoaming chamber through the air extraction port, which can efficiently extract the air in the defoaming chamber. In a vacuum environment, the bubbles in the material are more likely to break due to the reduced external pressure, thereby improving the quality of defoaming. At the same time, the vacuum environment can also reduce the risk of oxidation and deterioration of the material during the centrifugation process.

[0019] Furthermore, in addition to the outer side of the bubble chamber, a second cooling box is provided, and support brackets are provided on both sides of the second cooling box, with shock-absorbing pads at the bottom of the support brackets.

[0020] The beneficial effects of adopting the above technical solution are as follows: the second cooling box, which is set outside the defoaming chamber, is connected to the chiller through a hose, and can continuously provide cooling medium to the defoaming chamber, thereby effectively controlling the temperature of the defoaming chamber and the material inside, ensuring the stability and quality of the material, while the shock-absorbing pad can significantly reduce the vibration noise during the operation of the device.

[0021] Furthermore, a top cover is provided at the top of the defoaming chamber, and the top cover is detachably connected to the defoaming chamber. A fourth sealing ring is provided between the top cover and the defoaming chamber.

[0022] The beneficial effects of adopting the above technical solution are as follows: the top cover is used to seal and protect the inside of the defoaming chamber, and the top cover and the defoaming chamber are detachably connected by bolts and other connecting parts, which facilitates opening or closing the defoaming chamber. The fourth sealing ring is set between the top cover and the defoaming chamber, which can ensure a tight fit between the top cover and the defoaming chamber and reduce the risk of leakage.

[0023] Furthermore, the first sealing ring, the second sealing ring, and the third sealing ring are made of polyurethane or polyacrylate rubber.

[0024] The beneficial effects of adopting the above technical solution are as follows: both polyurethane and polyacrylate rubber materials have good elasticity and wear resistance, and can adapt to the slight deformation and long-term wear of the sealing surface, thereby improving the sealing performance and reducing the risk of leakage.

[0025] In summary, the centrifugal defoamer with cooling and sealing devices provided by this utility model has the following beneficial effects:

[0026] (1) The centrifugal defoamer uses the centrifugal force generated by high-speed operation to eliminate bubbles in the material, which can effectively improve the purity and quality of the material. Furthermore, by integrating cooling and sealing devices, it can maintain high stability during operation, avoiding operational failures caused by temperature rise or poor sealing, thereby ensuring the continuity and reliability of the production process.

[0027] (2) The mechanical seal assembly includes a sealing bushing, a rotating ring seat, a rotating ring, a stationary ring, and multiple E-type sealing rings, forming a multi-layer sealing structure to ensure sealing performance under vacuum negative pressure conditions. Compared with traditional O-type sealing rings, E-type sealing rings have better fit and sealing performance. When there is positive pressure of refrigerant in the inner cavity and negative pressure of vacuum in the outer cavity, E-type sealing rings can form better sealing performance and effectively reduce the risk of leakage.

[0028] (3) The cooling component uses components such as chiller, hose and cooling box to circulate and cool the mechanical seal component, which not only ensures the temperature stability of the equipment during high-speed operation, but also helps to reduce thermal stress and wear, and improves the safety and reliability of centrifugal defoamer. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the mechanical seal in this utility model;

[0031] Figure 3 This is a cross-sectional view of the mechanical seal assembly in this utility model;

[0032] Figure 4 This is a schematic diagram of the drive component in this utility model;

[0033] The components include: 1. Defoaming chamber; 11. Support bracket; 12. Top cover; 13. Third cooling box; 14. Air extraction port; 15. Exhaust port; 2. Mixing tank; 3. Drive assembly; 31. First drive motor; 32. First rotating shaft; 33. First gear; 34. Second gear; 35. Second rotating shaft; 36. Fixed base; 37. Rotary disk; 38. Second cooling box; 4. Mechanical seal assembly; 41. Sealing bushing; 42. Moving ring seat; 43. Drive ring; 44. Moving ring; 45. Stationary ring; 46. First sealing ring; 47. Second sealing ring; 48. Third sealing ring; 49. Third water inlet; 410. Second water outlet; 5. First cooling box; 6. Cooling assembly; 61. First water inlet; 62. First water outlet; 63. Second water inlet; 64. Chiller; 65. First hose; 66. Second hose; 7. Breathing valve. Detailed Implementation

[0034] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0035] like Figures 1-4As shown, the centrifugal defoamer with cooling and sealing devices provided by this utility model includes a control system and a defoaming chamber 1 connected to the control system. The defoaming chamber 1 is connected to a vacuum assembly. A mixing tank 2 is installed inside the defoaming chamber 1. A breather valve 7 is installed at the top of the mixing tank 2. The mixing tank 2 is connected to a drive assembly 3, which is located below the defoaming chamber 1. The output end of the drive assembly 3 is connected to a mechanical seal assembly 4. A cooling box is installed outside the mechanical seal assembly 4 and is connected to a cooling assembly 6. The cooling assembly 6, the drive assembly 3, and the breather valve 7 are all connected to the control system. The control system can precisely coordinate each component and mechanism, ensuring the accuracy and stability of the defoaming process. Through precise control, the defoaming efficiency can be optimized, while reducing energy consumption and failure rate. The connection between the defoaming chamber 1 and the vacuum assembly provides a negative pressure environment for the defoaming chamber 1 and the mixing tank 2. The negative pressure environment facilitates the faster escape of bubbles in the material, thereby improving the defoaming efficiency. The mixing tank 2 inside the defoaming chamber 1, under the high-speed operation of the drive assembly 3, utilizes... Centrifugal force effectively eliminates air bubbles in the material. Additionally, the breather valve 7, located at the top of the mixing tank 2, regulates and balances the air pressure inside the mixing tank 2 and the defoaming chamber 1, preventing sudden pressure changes caused by gases generated during material mixing or reaction. This ensures stable operation of the device under negative pressure conditions. Simultaneously, the breather valve 7 prevents contaminants such as particles, dust, and bacteria from entering the mixing tank 2, guaranteeing the cleanliness of the material processing. Furthermore, the mechanical seal assembly 4 achieves a better sealing effect when there is positive refrigerant pressure in the inner cavity and negative vacuum pressure in the outer cavity, ensuring the sealing performance of the defoamer under negative vacuum conditions and reducing the risk of leakage. The mechanical seal assembly 4 employs a multi-seal structure, improving the equipment's sealing performance and durability. Additionally, a cooling box, located outside the mechanical seal assembly 4 and connected to the cooling assembly 6, circulates cooling to the mechanical seal assembly 4, ensuring temperature stability during high-speed operation, reducing thermal stress and wear caused by temperature increases, and improving the safety and reliability of the equipment.

[0036] like Figure 2 and Figure 3As shown, the mechanical seal assembly 4 includes a sealing bushing 41, a rotating ring seat 42 at one end of the sealing bushing 41, a driving ring 43 at the other end of the sealing bushing 41, a rotating ring 44 on the rotating ring seat 42, a stationary ring 45 on the side of the rotating ring seat 42 near the driving ring 43, a cooling box outside the stationary ring 45, and a cooling chamber formed between the cooling box and the stationary ring 45; a first sealing ring 46 is provided inside the sealing bushing 41, a second sealing ring 47 is provided between the sealing bushing 41 and the rotating ring seat 42, and a third sealing ring 48 is provided between the stationary ring 45 and the cooling box. The first sealing ring 46, the second sealing ring 47 and the third sealing ring 48 are all E-shaped sealing rings, and the materials of the first sealing ring 46, the second sealing ring 47 and the third sealing ring 48 are polyurethane or polyacrylate rubber materials. The mechanical seal assembly 4, located at the output end of the drive assembly 3, includes a sealing bushing 41, a rotating ring seat 42, a rotating ring 44, a stationary ring 45, and multiple E-type sealing rings, forming a multi-layer sealing structure. This ensures sealing performance under vacuum negative pressure conditions. Compared with traditional O-type sealing rings, E-type sealing rings have better fit and sealing performance. In addition, E-type sealing rings can form better sealing performance when there is refrigerant positive pressure in the inner cavity and vacuum negative pressure in the outer cavity, effectively improving sealing performance, reducing the risk of leakage, and extending the service life of the device.

[0037] like Figure 1 As shown, the cooling assembly 6 includes a chiller 64, which has a first inlet 61, a second inlet 63, and a first outlet 62. The first outlet 62 of the chiller 64 is connected to one end of a first flexible hose 65, and the other end of the first flexible hose 65 is connected to a third inlet 49. The second inlet 63 of the chiller 64 is connected to one end of a second flexible hose 66, and the other end of the second flexible hose 66 is connected to a second outlet 410. The third inlet 49 and the second outlet 410 are both located on the cooling tank. The first inlet 61 of the chiller 64 is used to receive... The system receives low-temperature water from an external source, while the first outlet 62 outputs refrigerant (cooling water) cooled by the chiller 64. The first hose 65 connects the first outlet 62 of the chiller 64 to the second inlet 63 of the cooling tank, and the second hose 66 connects the first inlet 61 of the chiller 64 to the second outlet 410 of the cooling tank, forming a circulation path for the cooling medium between the cooling tank and the chiller 64. This allows the cooling medium to flow freely between the chiller 64 and the cooling tank, achieving the purpose of cooling and helping to ensure the operational stability and safety of the device.

[0038] like Figure 1 and 4As shown, the drive assembly 3 includes a first drive motor 31, a first rotating shaft 32 is provided at the output end of the first drive motor 31, a first gear 33 is provided on the first rotating shaft 32, the first gear 33 is meshed with a second gear 34, a second rotating shaft 35 is provided in the middle of the second gear 34, a mechanical seal assembly 4 is provided on the second rotating shaft 35, and a fixed base 36 is provided at the end of the second rotating shaft 35 away from the drive motor, a rotating disk 37 is provided on the fixed base 36, a mixing tank 2 is provided on the rotating disk 37, and a second cooling box 38 is provided outside the second rotating shaft 35 and the rotating disk 37, and the second cooling box 38 is connected to the chiller 64 through a hose. When the first drive motor 31 starts, the first rotating shaft 32 transmits rotational power to the first gear 33 and the second gear 34, driving the second rotating shaft 35 and the mechanical seal assembly 4 to rotate, and transmitting the rotational force to the rotating disk 37. The rotation of the rotating disk 37 achieves centrifugal treatment of the material in the mixing tank 2, effectively improving the defoaming efficiency. The mechanical seal can ensure the sealing performance of the centrifugal defoamer under vacuum negative pressure conditions, reducing the risk of leakage.

[0039] like Figure 1 As shown, the empty assembly includes a vacuum pump. The defoaming chamber 1 is equipped with an exhaust port and an extraction port 14, with the extraction port 14 connected to the vacuum pump via a pipe. The vacuum pump, connected to the defoaming chamber 1 through the extraction port 14, can efficiently extract air from the defoaming chamber 1. In a vacuum environment, bubbles in the material are more likely to break due to the reduced external pressure, thereby improving the defoaming quality. At the same time, the vacuum environment can also reduce the risk of oxidation and deterioration of the material during centrifugation.

[0040] In this embodiment of the invention, a top cover 12 is provided at the top of the defoaming chamber 1. The top cover 12 is detachably connected to the defoaming chamber 1, and a fourth sealing ring is provided between the top cover 12 and the defoaming chamber 1. The top cover 12 is used to seal and protect the interior of the defoaming chamber 1, and the top cover 12 and the defoaming chamber 1 are detachably connected by bolts or other connecting parts, which facilitates opening or closing the defoaming chamber 1. The fourth sealing ring is provided between the top cover 12 and the defoaming chamber 1 to ensure a tight fit between the top cover 12 and the defoaming chamber 1, reducing the risk of leakage. A second cooling box 38 is provided outside the defoaming chamber 1. Support brackets 11 are provided on both sides of the second cooling box 38, and shock-absorbing pads are provided at the bottom of the support brackets 11. The second cooling box 38, located outside the defoaming chamber 1, is connected to a chiller 64 through a hose, which can continuously provide a cooling medium to the defoaming chamber 1, thereby effectively controlling the temperature of the defoaming chamber 1 and the material inside, ensuring the stability and quality of the material. The shock-absorbing pads can significantly reduce the vibration noise during the operation of the device.

[0041] In summary, the centrifugal defoamer provided by this utility model utilizes the centrifugal force generated by high-speed rotation to eliminate air bubbles in materials, which can effectively improve the purity and quality of materials. Furthermore, by integrating cooling and sealing devices, it can maintain high stability during operation, avoiding operational failures caused by temperature rise or poor sealing, thereby ensuring the continuity and reliability of the production process.

Claims

1. A centrifugal deaerator having a cooling and sealing device, characterized in that: The utility model provides a kind of control system and the bubble removal cavity (1) connected with control system, the bubble removal cavity (1) is connected with vacuum assembly, mixing tank (2) is provided in the bubble removal cavity (1), the top of the mixing tank (2) is provided with breather valve (7), the mixing tank (2) is connected with drive assembly (3), the drive assembly (3) is arranged below bubble removal cavity (1), the output end of the drive assembly (3) is connected with mechanical seal assembly (4), the outside of the mechanical seal assembly (4) is provided with cooling box, the cooling box is connected with cooling assembly (6);The cooling assembly (6), drive assembly (3) and breather valve (7) are connected with control system; The mechanical seal assembly (4) includes a seal sleeve (41), one end of the seal sleeve (41) is provided with a dynamic ring seat (42), the other end of the seal sleeve (41) is provided with a driving ring (43), the dynamic ring seat (42) is provided with a dynamic ring (44), the side of the dynamic ring seat (42) close to the driving ring (43) is provided with a static ring (45), the outside of the static ring (45) is provided with a first cooling box (5), and a cooling chamber is formed between the first cooling box (5) and the static ring (45). The seal sleeve (41) is provided with a first sealing ring (46) therein, the seal sleeve (41) is provided with a second sealing ring (47) between the seal sleeve (41) and the dynamic ring seat (42), the static ring (45) is provided with a third sealing ring (48) between the static ring (45) and the cooling box, and the first sealing ring (46), the second sealing ring (47) and the third sealing ring (48) are all E-shaped sealing rings.

2. The centrifugal defoaming machine with cooling and sealing device according to claim 1, characterized in that: The cooling assembly (6) includes a water chiller (64), the water chiller (64) is provided with a first water inlet (61), a second water inlet (63) and a first water outlet (62), one end of the first water outlet (62) of the water chiller (64) is connected with a first hose (65), the other end of the first hose (65) is connected with a third water inlet (49), one end of the second water inlet (63) of the water chiller (64) is connected with a second hose (66), the other end of the second hose (66) is connected with a second water outlet (410), and the third water inlet (49) and the second water outlet (410) are both arranged on the cooling box.

3. The centrifugal defoaming machine with cooling and sealing device according to claim 1, characterized in that: The drive assembly (3) includes a first drive motor (31), the output end of the first drive motor (31) is provided with a first rotating shaft (32), the first rotating shaft (32) is provided with a first gear (33), the first gear (33) is meshed and connected with a second gear (34), the second gear (34) is provided with a second rotating shaft (35) in the middle, and the second rotating shaft (35) is provided with a mechanical seal assembly (4).

4. The centrifugal defoaming machine with cooling and sealing device according to claim 3, characterized in that: The second rotating shaft (35) is provided with a fixed base (36) away from the drive motor, the fixed base (36) is provided with a rotating disc (37), the rotating disc (37) is provided with a mixing tank (2), and the outside of the second rotating shaft (35) and the rotating disc (37) is provided with a second cooling box (38), and the second cooling box (38) is connected with the water chiller (64) through a hose.

5. The centrifugal defoaming machine with cooling and sealing device according to claim 1, characterized in that: The vacuum assembly comprises a vacuum pump, and an exhaust port and an air suction port (14) are arranged on the defoaming cavity (1), and the air suction port (14) is connected with the vacuum pump through a pipeline.

6. The centrifugal defoaming machine with cooling and sealing device according to claim 1, characterized in that: The defoaming cavity (1) is externally provided with a second cooling box (38), both sides of the second cooling box (38) are provided with supporting brackets (11), and the bottom end of the supporting bracket (11) is provided with a shock pad.

7. The centrifugal-type defoaming machine with cooling and sealing device according to claim 1, characterized in that: The top end of the defoaming cavity (1) is provided with a top cover (12), the top cover (12) is detachably connected with the defoaming cavity (1), and the fourth sealing ring is arranged between the top cover (12) and the defoaming cavity (1).

8. The centrifugal defoaming machine with cooling and sealing device according to claim 1, characterized in that: The material of the first sealing ring (46), the second sealing ring (47) and the third sealing ring (48) is polyurethane or polyacrylate rubber material.

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