A liquid nitrogen cooling structure for a drum centrifuge chamber

Abstract

The utility model provides a kind of liquid nitrogen cooling structure for drum centrifugal cavity, comprising: centrifuge body, the cooling assembly for being used to cool the drum centrifugal cavity is installed in the centrifuge body interior, the cooling assembly includes refrigerant inlet channel, the refrigerant inlet channel is formed from left to right and penetrates in the middle lower side of transmission component, the refrigerant discharge channel is formed from left to right and penetrates in the middle upper side of transmission component, compared with prior art, the utility model has the beneficial effects as follows: by setting cooling cavity in centrifugal shaft interior, and cooling assembly is installed in its interior, instead of conventional cooling mode, it has better cooling effect, avoid the problem of temperature accumulation rise in drum, by setting cooling assembly, prevent excessive heat accumulation in chamber during high-speed rotation, improve the cooling effect and cooling efficiency in drum cavity, meet the demand when processing high-temperature material or long time running, improve the stability of equipment operation.

Description

Technical Field

[0001] This utility model belongs to the field of centrifuge cooling technology, and specifically relates to a liquid nitrogen cooling structure for a rotary drum centrifuge chamber. Background Technology

[0002] Existing centrifuges suffer from significant shortcomings in cooling the rotor chamber, primarily manifesting as excessively high temperatures leading to decreased separation efficiency, impaired material properties, and reduced equipment operational stability. This problem stems from excessive heat accumulation within the chamber during high-speed rotation, while traditional cooling systems have limitations in effectively dissipating this heat. For example, some centrifuges employ natural heat dissipation or simple air cooling, which have low heat dissipation efficiency and are insufficient for handling high-temperature materials or prolonged operation.

[0003] Conventional solutions include optimizing the chamber structure to enhance heat conduction, increasing the cooling medium flow rate, or improving the type of cooling device (such as introducing water cooling or refrigerant cooling). However, these methods also have corresponding drawbacks: while optimizing the chamber structure can improve heat dissipation, it may be limited by equipment space and manufacturing processes; increasing the cooling medium flow rate can improve cooling capacity, but it may lead to increased energy consumption and system complexity; improving the type of cooling device can improve cooling efficiency, but it can increase costs and may introduce new maintenance challenges. Therefore, we aim to design a torque protection structure with a novel design to address this problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a liquid nitrogen cooling structure for a rotary drum centrifuge chamber, thereby solving the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a liquid nitrogen cooling structure for a rotary drum centrifuge chamber, comprising: a centrifuge body, wherein a cooling component for cooling the rotary drum centrifuge chamber is installed inside the centrifuge body, and a rotary drum is rotatably mounted in the middle of the centrifuge body through a transmission component and a drive motor, wherein a centrifugal shaft for centrifugal separation is installed inside the rotary drum;

[0006] The cooling assembly includes a refrigerant inlet channel. The lower middle side of the transmission assembly forms a refrigerant inlet channel from left to right, and the upper middle side of the transmission assembly forms a refrigerant outlet channel from left to right. The refrigerant inlet channel is fixedly connected to the right end of the equalizing component for cooling the centrifugal shaft, thereby achieving cooling of the centrifugal chamber of the drum.

[0007] In a preferred embodiment, a cooling chamber is provided inside the right side of the centrifugal shaft, and a material distribution chamber is provided inside the left end of the centrifugal shaft. A partition is provided between the cooling chamber and the material distribution chamber for sealing and separation.

[0008] In a preferred embodiment, the refrigerant inlet channel and the refrigerant outlet channel are arranged symmetrically about the axis of the transmission assembly. Each of the refrigerant inlet channel and the refrigerant outlet channel is provided with a refrigerant pipe. In actual use, the outer ends of the refrigerant inlet channel and the refrigerant outlet channel are connected to a rotary joint, and are connected to an external liquid nitrogen tank through the rotary joint and a liquid nitrogen pump for transporting liquid nitrogen into the cooling assembly.

[0009] In a preferred embodiment, the left ends of the refrigerant inlet channel and the refrigerant outlet channel are both connected to the inside of the right end of the cooling chamber, and the refrigerant inlet channel and the refrigerant outlet channel are not connected to the material distribution chamber.

[0010] In a preferred embodiment, the distribution component includes a manifold, and an inlet pipe is provided on the lower right side of the manifold, which is sealed to the right end of the refrigerant inlet channel.

[0011] In a preferred embodiment, the right end of the manifold is fixedly connected to the middle of the fixing plate, and the edge of the fixing plate is fixedly connected to the inner wall of the cooling chamber. The fixing plate has multiple air holes for communication from left to right.

[0012] In a preferred embodiment, the outer wall of the manifold is provided with three sets of refrigerant pipes. Each set of refrigerant pipes consists of multiple branch pipes arranged in a straight line. The three sets of refrigerant pipes are arranged at a 120-degree angle to each other, and there is a gap between the branch pipes and the inner wall of the cooling chamber.

[0013] In a preferred embodiment, a sealing ring is provided on the outer wall of the left end of the manifold, and the manifold is sealed to the partition plate through the sealing ring. The left end of the manifold extends through the partition plate into the material distribution chamber, and the inside of the manifold is not directly connected to the inside of the material distribution chamber.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are: 1. By setting a cooling chamber inside the centrifugal shaft and installing a cooling component inside it, nitrogen is transported to the centrifugal shaft through the cooling component and simultaneously cools the transmission component. The liquid nitrogen entering the centrifugal shaft will cool the drum, replacing the traditional cooling method. It has a better cooling effect and avoids the problem of temperature accumulation and rise inside the drum.

[0015] 2. By setting up cooling components, excessive heat accumulation in the chamber during high-speed rotation is prevented, improving the cooling effect and efficiency in the drum chamber. This meets the requirements when processing high-temperature materials or operating for extended periods, and enhances the stability of equipment operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a liquid nitrogen cooling structure for a rotary centrifuge chamber according to the present invention.

[0018] Figure 2 This is a schematic diagram of the centrifuge shaft structure of a liquid nitrogen cooling structure for a rotary centrifuge chamber according to the present invention.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the centrifuge shaft and transmission assembly of a liquid nitrogen cooling structure for a rotary centrifuge chamber according to the present invention.

[0020] Figure 4 This is a schematic diagram of the cooling component structure of a liquid nitrogen cooling structure for a rotary centrifuge chamber according to the present invention.

[0021] In the diagram, 100 is the centrifuge body, 110 is the drum, 120 is the transmission assembly, 130 is the centrifuge shaft, 131 is the cooling chamber, 132 is the material distribution chamber, and 133 is the partition.

[0022] 200-Cooling component, 210-Refrigerant inlet channel, 220-Refrigerant outlet channel, 230-Divider, 231-Fixing plate, 232-Inlet pipe, 233-Manifold, 234-Branch pipe, 235-Sealing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] As the first embodiment of this utility model:

[0025] Please see Figures 1 to 4A liquid nitrogen cooling structure for a rotating drum centrifuge chamber includes: a centrifuge body 100, a cooling assembly 200 for cooling the centrifuge chamber of a rotating drum 110 installed inside the centrifuge body 100, a rotating drum 110 rotatably mounted in the middle of the centrifuge body 100 via a transmission assembly 120 and a drive motor, and a centrifuge shaft 130 for centrifugal separation installed inside the rotating drum 110.

[0026] The cooling assembly 200 includes a refrigerant inlet channel 210. The transmission assembly 120 extends from left to right through the lower middle side to form the refrigerant inlet channel 210. The transmission assembly 120 extends from left to right through the upper middle side to form the refrigerant outlet channel 220. The refrigerant inlet channel 210 is fixedly connected to the right end of the equalizing component 230 for cooling the centrifugal shaft 130, thereby cooling the centrifugal chamber of the drum 110.

[0027] A cooling chamber 131 is provided inside the right side of the centrifugal shaft 130, and a material distribution chamber 132 is provided inside the left end of the centrifugal shaft 130. A partition 133 is provided between the cooling chamber 131 and the material distribution chamber 132 for sealing and separation.

[0028] Specifically, by setting a cooling chamber 131 inside the centrifugal shaft 130 and installing a cooling assembly 200 inside it, in actual use, the cooling assembly 200, together with an external liquid nitrogen tank, can deliver liquid nitrogen to the centrifugal shaft 130 through the cooling assembly 200 and simultaneously cool the transmission assembly 120. The liquid nitrogen entering the centrifugal shaft 130 will cool the drum 110, replacing the traditional cooling method, which has a better cooling effect and avoids the problem of temperature accumulation and rise inside the drum 110.

[0029] As a second embodiment of this utility model:

[0030] Please see Figures 1 to 4 The refrigerant inlet channel 210 and the refrigerant outlet channel 220 are arranged symmetrically about the axis of the transmission assembly 120. Both the refrigerant inlet channel 210 and the refrigerant outlet channel 220 are equipped with a refrigerant pipe. In actual use, the outer ends of the refrigerant inlet channel 210 and the refrigerant outlet channel 220 are connected to a rotary joint, and are connected to an external liquid nitrogen tank through the rotary joint and a liquid nitrogen pump to transport liquid nitrogen into the cooling assembly 200.

[0031] The left ends of the refrigerant inlet channel 210 and the refrigerant outlet channel 220 are connected to the inside of the right end of the cooling chamber 131, but the refrigerant inlet channel 210 and the refrigerant outlet channel 220 are not connected to the distribution chamber 132.

[0032] The distribution unit 230 includes a manifold 233, and an inlet pipe 232 is provided on the lower right side of the manifold 233, which is sealed to the right end of the refrigerant inlet channel 210.

[0033] The right end of the manifold 233 is fixedly connected to the middle of the fixing plate 231, and the edge of the fixing plate 231 is fixedly connected to the inner wall of the cooling cavity 131. The fixing plate 231 has multiple air holes for communication from left to right.

[0034] The outer wall of the manifold 233 is provided with three sets of refrigerant pipes. Each set of refrigerant pipes consists of multiple branch pipes 234 arranged in a straight structure. The three sets of refrigerant pipes are arranged at a 120-degree angle to each other, and there is a gap between the branch pipes 234 and the inner wall of the cooling chamber 131.

[0035] A sealing ring 235 is provided on the outer wall of the left end of the manifold 233, and it is sealed to the partition 133 through the sealing ring 235. The left end of the manifold 233 extends through the partition 133 into the material distribution chamber 132. The inside of the manifold 233 is not directly connected to the inside of the material distribution chamber 132.

[0036] Based on the first embodiment described above, further, in actual use, the external liquid nitrogen tank delivers liquid nitrogen to the rotary joint located at the right end of the transmission assembly 120 via a liquid nitrogen pump, and connects with the refrigerant inlet channel 210. The liquid nitrogen passes through the refrigerant inlet channel 210, crosses the transmission assembly 120, and then enters the manifold 233 via the inlet pipe 232. Under the action of the manifold 233, the liquid nitrogen is evenly delivered to the outer wall of the centrifugal shaft 130 of the drum 110 through multiple branch pipes 234 on its surface, thereby rapidly reducing the overall temperature of the centrifugal shaft 130. Since the centrifugal shaft 130 is placed inside the centrifugal chamber of the drum 110, the low-temperature centrifugal shaft... The spindle 130 can directly cool the centrifugal chamber of the drum 110. The liquid nitrogen entering the cooling chamber 131, after the pressure gradually increases, continuously flows into the refrigerant discharge channel 220 and is then discharged through the rotary joint (a return pipe can be set to connect to an external liquid nitrogen recovery device to avoid direct discharge of liquid nitrogen and waste of resources). The part of the manifold 233 that extends to the powder chamber directly cools the incoming material, preventing excessive heat accumulation in the chamber during high-speed rotation, improving the cooling effect and efficiency in the drum 110 chamber, meeting the needs of processing high-temperature materials or long-term operation, and improving the stability of equipment operation.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid nitrogen cooling structure for a rotary centrifuge chamber, comprising: A centrifuge body (100) is characterized in that a cooling assembly (200) for cooling the centrifugal chamber of the drum (110) is installed inside the centrifuge body (100), and the drum (110) is rotatably mounted in the middle of the centrifuge body (100) through a transmission assembly (120) and a drive motor, and a centrifugal shaft (130) for centrifugal separation is installed inside the drum (110). The cooling assembly (200) includes a refrigerant inlet channel (210). The transmission assembly (120) forms a refrigerant inlet channel (210) by passing through the lower middle side from left to right. The transmission assembly (120) forms a refrigerant outlet channel (220) by passing through the upper middle side from left to right. The refrigerant inlet channel (210) is fixedly connected to the right end of the equalizing component (230) for cooling the centrifugal shaft (130) and thus cooling the centrifugal chamber of the drum (110).

2. The liquid nitrogen cooling structure for a rotary centrifuge chamber as described in claim 1, characterized in that: A cooling chamber (131) is provided inside the right side of the centrifugal shaft (130), and a material distribution chamber (132) is provided inside the left end of the centrifugal shaft (130). A partition (133) is provided between the cooling chamber (131) and the material distribution chamber (132) for sealing separation.

3. The liquid nitrogen cooling structure for a rotary centrifuge chamber as described in claim 1, characterized in that: The refrigerant inlet channel (210) and the refrigerant outlet channel (220) are arranged symmetrically about the axis of the transmission assembly (120), and a refrigerant pipe is provided inside both the refrigerant inlet channel (210) and the refrigerant outlet channel (220).

4. The liquid nitrogen cooling structure for a rotary centrifuge chamber as described in claim 3, characterized in that: The left ends of the refrigerant inlet channel (210) and the refrigerant outlet channel (220) are connected to the inside of the right end of the cooling chamber (131), and the refrigerant inlet channel (210) and the refrigerant outlet channel (220) are not connected to the material distribution chamber (132).

5. The liquid nitrogen cooling structure for a rotary centrifuge chamber as described in claim 1, characterized in that: The equalizing component (230) includes a manifold (233), and an inlet pipe (232) is provided on the lower right side of the manifold (233), and is sealed to the right end of the refrigerant inlet channel (210) through the inlet pipe (232).

6. The liquid nitrogen cooling structure for a rotary centrifuge chamber as described in claim 1, characterized in that: The right end of the manifold (233) is fixedly connected to the middle of the fixing plate (231), and the edge of the fixing plate (231) is fixedly connected to the inner wall of the cooling cavity (131). The fixing plate (231) has multiple air holes for communication from left to right.

7. The liquid nitrogen cooling structure for a rotary centrifuge chamber as described in claim 1, characterized in that: The outer wall of the manifold (233) is provided with three sets of refrigerant pipes. Each set of refrigerant pipes consists of multiple branch pipes (234) arranged in a straight structure. The three sets of refrigerant pipes are arranged at a 120-degree angle to each other, and there is a gap between the branch pipes (234) and the inner wall of the cooling chamber (131).

8. The liquid nitrogen cooling structure for a rotary centrifuge chamber as described in claim 1, characterized in that: The left end of the manifold (233) is provided with a sealing ring (235) and is sealed to the partition (133) through the sealing ring (235). The left end of the manifold (233) extends through the partition (133) into the material distribution chamber (132). The inside of the manifold (233) is not directly connected to the inside of the material distribution chamber (132).

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