A laboratory centrifuge

Abstract

The utility model provides a laboratory centrifugal equipment belongs to test tube centrifugal equipment technical field, including the motor that centrifuge cylinder inner bottom part set up, the rack that rotates to set up on the motor, the cylinder cover of centrifuge cylinder top, motor top is provided with the sealing plate, the top of sealing plate is provided with the rotating shaft that is connected with motor rotation, the middle part of rack is provided with the temperature adjusting cavity, is provided with the fan heater in the cavity, the fan heater air outlet end is provided with the ventilation pipeline, the first air pipe is connected with and is provided with in the bottom of ventilation pipeline, the second air pipe is connected with and is provided with in the top of ventilation pipeline, the utility model discloses through the fan heater supplies cold wind or hot air, and then makes the temperature adjusting gas through the ventilation pipeline into the air distribution pipe, thereby makes the air distribution pipe synchronous to the first air pipe and the second air pipe air supply, again through the first branch pipe to the upper part of centrifuge cylinder air supply temperature adjustment, the second branch pipe to the lower part of centrifuge cylinder air supply temperature adjustment, thereby makes the upper and lower two of centrifuge cylinder can be received simultaneously and make up air temperature adjustment, and then improved the speed of temperature adjustment to the space in centrifuge cylinder.

Description

Technical Field

[0001] This utility model relates to the field of test tube centrifugation equipment technology, specifically to a laboratory centrifugation device. Background Technology

[0002] In laboratory sample processing, test tube centrifugation is the core step in achieving stratification and solid-liquid separation of micro-samples (such as nucleic acid extraction and protein separation). Laboratory test tubes of 1.5mL, 5mL, and 10mL are commonly used as containers.

[0003] In related technologies, when separating proteins or other biochemical liquids from samples, the detection solution is placed into a test tube, which is then placed on a rack inside a centrifuge tube for fixation. A motor connected to the bottom of the rack rotates the test tube fixed on the rack to perform centrifugation. However, in existing centrifuges, the temperature inside the test tube slowly increases with centrifugation time and rotation speed during rotation. The temperature inside the centrifuge tube cannot be regulated, which can easily lead to a decrease in the activity of some heat-sensitive samples, or even complete failure (such as protein precipitation or virus inactivation). Although some centrifuges are equipped with temperature-controlled devices, their temperature control speed is slow, and they can only supply regulating gas to the centrifuge tube through a single pipe, which cannot quickly fill the centrifuge tube with cold or hot gas. To solve the above problems, a laboratory centrifuge device is proposed. Utility Model Content

[0004] In view of this, the present invention provides a laboratory centrifuge device. The present invention supplies cold or hot air through a heater, and then allows the temperature-controlled gas to enter the air distribution pipe through the ventilation duct. This allows the air distribution pipe to simultaneously supply air to the first air duct and the second air duct. The first branch pipe supplies air to the upper part of the centrifuge cylinder for temperature control, and the second branch pipe supplies air to the lower part of the centrifuge cylinder for temperature control. This allows both the upper and lower parts of the centrifuge cylinder to be simultaneously supplied with supplemental air for temperature control, thereby improving the speed of temperature control within the centrifuge cylinder.

[0005] To solve the above-mentioned technical problems, this utility model provides a laboratory centrifuge device, including a motor installed at the bottom of the centrifuge cylinder, a mounting rack rotatably mounted on the motor, several test tubes fixedly placed on the mounting rack, a cylinder cover at the top of the centrifuge cylinder, a sealing plate above the motor, a rotating shaft connected to the motor for rotation above the sealing plate, the rotating shaft being connected to the bottom of the mounting rack, a temperature-regulating chamber in the middle of the mounting rack, a cavity inside the cylinder cover, a heater installed inside the cavity, a ventilation duct at the outlet of the heater, a first air duct connected to the bottom of the ventilation duct, a second air duct connected to the upper part of the ventilation duct, the first air duct passing through the bottom plate of the cylinder cover and entering the upper part of the temperature-regulating chamber, the second air duct being located inside the first air duct, and the first air duct axially passing through the second air duct and located at the bottom of the temperature-regulating chamber.

[0006] The bottom of the first duct is connected to multiple first branch pipes around its perimeter. The first branch pipes are used to supply air and regulate the temperature of the upper part of the centrifuge. The bottom of the second duct is connected to multiple second branch pipes around its perimeter. The second branch pipes are used to supply air and regulate the temperature of the lower part of the centrifuge. This allows both the upper and lower parts of the centrifuge to receive supply air and regulate the temperature simultaneously, thereby improving the speed of temperature regulation of the internal environment of the centrifuge.

[0007] The ventilation duct includes a main duct that is sealed and connected to the air outlet of the heater, and a distribution duct that is vertically connected to the air outlet of the main duct. The main duct is located in the middle of the distribution duct.

[0008] The first duct is connected to the bottom of the distribution duct via a first reducing connector, and the second duct is connected to the top of the distribution duct via a second reducing connector. The diameter of the first duct is larger than that of the second duct, and the length of the second duct is larger than that of the first duct.

[0009] A coupling is embedded in the middle of the sealing plate. The lower end of the coupling is sealed to the motor output shaft, and the upper end of the coupling is sealed to the rotating shaft.

[0010] The placement rack includes an upper positioning plate and a lower positioning plate arranged in the vertical direction. Multiple support rods are provided at the edge between the upper and lower positioning plates. The support rods are spaced apart from the test tubes, and the temperature control chamber passes through the surface of the upper positioning plate.

[0011] The surface of the cylinder cover is provided with several heat dissipation holes, which are used for heat dissipation of the heater.

[0012] An upper guide rail is provided on the upper inner wall of the centrifuge cylinder to adapt to the rotation of the upper positioning plate, and a lower guide rail is provided on the lower inner wall of the centrifuge cylinder to adapt to the rotation of the lower positioning plate. The upper and lower guide rails are used to assist the rotation of the upper and lower positioning plates respectively, thereby stabilizing the rack when it rotates.

[0013] An insulation cavity is embedded in the inner wall of the centrifuge cylinder. The insulation cavity is filled with an insulation layer, which is used to insulate the outer wall of the centrifuge cylinder. A sealing ring is fixed on the top of the insulation cavity to seal the insulation cavity. The top wall of the sealing ring has an annular groove to receive a positioning ring. A positioning ring that matches the annular groove is fixed on the bottom of the cylinder cover. The positioning ring is pressed into the annular groove to make the connection between the centrifuge cylinder and the cylinder cover tighter.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Cold or hot air is supplied by a heater, which then allows the temperature-controlled gas to enter the air distribution pipe through the ventilation duct. This allows the air distribution pipe to simultaneously supply air to the first and second air ducts. The first branch pipe supplies air to the upper part of the centrifuge cylinder for temperature control, and the second branch pipe supplies air to the lower part of the centrifuge cylinder for temperature control. This allows both the upper and lower parts of the centrifuge cylinder to receive supplemental air for temperature control at the same time, thereby improving the speed of temperature control within the centrifuge cylinder.

[0015] 2. The first duct is connected to the bottom of the distribution duct through the first reducing joint, and the second duct is connected to the upper part of the distribution duct through the second reducing joint. By changing the diameter, ducts of different diameters can be connected to the distribution duct.

[0016] 3. The upper and lower guide rails are used to assist the rotation of the upper and lower positioning plates respectively, thereby stabilizing the placement frame during rotation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 This utility model Figure 2 A magnified view of part A; Figure 4 This is a schematic diagram of the assembly structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 100, centrifuge cylinder; 101, motor; 102, rack; 103, test tube; 104, cylinder cover; 105, heat dissipation hole; 200, sealing plate; 201, coupling; 202, rotating shaft; 203, temperature regulating chamber; 300, cavity; 301, warm air blower; 302, ventilation duct; 303, first air duct; 304, second air duct; 305, first branch pipe; 306, second branch pipe; 307, main air duct; 308, distribution air duct; 309, first reducing connector; 310, second reducing connector; 400, upper positioning plate; 401, lower positioning plate; 402, support rod; 403, upper guide rail; 404, lower guide rail; 500, insulation chamber; 501, insulation layer; 502, sealing ring; 503, annular groove; 504, positioning ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0020] like Figure 1-4 As shown: This embodiment provides a laboratory centrifuge device, including a motor 101 installed at the bottom of a centrifuge cylinder 100, a rack 102 rotatably mounted on the motor 101, several test tubes 103 fixedly placed on the rack 102, a cylinder cover 104 at the top of the centrifuge cylinder 100, a sealing plate 200 above the motor 101, a rotating shaft 202 rotatably connected to the motor 101 above the sealing plate 200, the rotating shaft 202 being connected to the bottom of the rack 102, a temperature-regulating chamber 203 in the middle of the rack 102, a cavity 300 inside the cylinder cover 104, a heater 301 inside the cavity 300, the heater 301 having the ability to blow cold and hot air, and an ice crystal box adapted inside the heater 301. An auxiliary fan is used for blowing and cooling, and it is also equipped with ceramic heating elements or electric heating wires. When powered on, it works with the fan to blow and heat up. The air outlet of the heater 301 is equipped with a ventilation duct 302. The ventilation duct 302 is used to circulate the air blown out by the heater 301. The ventilation duct 302 is used to connect the first air duct 303 and the second air duct 304 to the heater 301. The bottom of the ventilation duct 302 is connected to the first air duct 303, and the upper part of the ventilation duct 302 is connected to the second air duct 304. The first air duct 303 passes through the bottom plate of the cylinder cover 104 and enters the upper part of the temperature regulating cavity 203. The second air duct 304 is located inside the first air duct 303. The first air duct 303 passes axially through the second air duct 304 and is located at the bottom of the temperature regulating cavity 203.

[0021] In use, the heater 301 supplies cold or hot air, which in turn causes the temperature-controlled gas to enter the air distribution pipe 308 through the ventilation pipe 302. This allows the air distribution pipe 308 to simultaneously supply air to the first air pipe 303 and the second air pipe 304. The first branch pipe 305 supplies air to the upper part of the centrifuge cylinder 100 for temperature control, and the second branch pipe 306 supplies air to the lower part of the centrifuge cylinder 100 for temperature control. This allows both the upper and lower parts of the centrifuge cylinder 100 to receive supplemental air for temperature control at the same time, thereby improving the speed of temperature control within the centrifuge cylinder 100.

[0022] This embodiment provides a laboratory centrifuge device. like Figure 2 , 3 As shown: Multiple first branch pipes 305 are connected around the bottom of the first air duct 303. The first branch pipes 305 are welded to the first air duct 303. The first branch pipes 305 are used to supply air and regulate the temperature of the upper part of the centrifuge cylinder 100. Multiple second branch pipes 306 are connected around the bottom of the second air duct 304. The second air duct 304 is welded to the second branch pipes 306. The second branch pipes 306 are used to supply air and regulate the temperature of the lower part of the centrifuge cylinder 100. Thus, the upper and lower parts of the centrifuge cylinder 100 can be supplied with air and regulated at the same time, thereby improving the speed of temperature regulation of the internal environment of the centrifuge cylinder 100.

[0023] Its effect is as follows: the first branch pipe 305 is used to make up air and adjust the temperature of the upper part of the centrifuge cylinder 100, and the second branch pipe 306 is used to make up air and adjust the temperature of the lower part of the centrifuge cylinder 100, so that the upper and lower parts of the centrifuge cylinder 100 can be made up air and adjusted at the same time, thereby improving the speed of adjusting the temperature of the internal environment of the centrifuge cylinder 100.

[0024] like Figure 2 , 3 As shown: The ventilation duct 302 includes a main duct 307 that is sealed and connected to the air outlet of the heater 301. The main duct 307 and the air outlet of the heater 301 are sealed and connected by a flange. The air outlet of the main duct 307 is vertically connected to a distribution duct 308. The main duct 307 and the distribution duct 308 are welded together. An electric valve is installed on the main duct 307. The main duct 307 is located in the middle of the distribution duct 308. The first duct 303 is connected to the bottom of the distribution duct 308 through a first reducing joint 309. The second duct 304 is connected to the upper part of the distribution duct 308 through a second reducing joint 310. The diameter of the first duct 303 is larger than the diameter of the second duct 304, and the length of the second duct 304 is larger than the length of the first duct 303.

[0025] The effect is as follows: the first duct 303 is connected to the bottom of the distribution duct 308 through the first reducing joint 309. One end of the first reducing joint 309 is welded to the first duct 303 and the other end is welded to the distribution duct 308. The second duct 304 is connected to the upper part of the distribution duct 308 through the second reducing joint 310. One end of the second reducing joint 310 is welded to the second duct 304 and the other end is welded to the distribution duct 308. By changing the diameter, ducts of different diameters can be connected to the distribution duct 308.

[0026] like Figure 2 , 4 As shown: A coupling 201 is embedded in the middle of the sealing plate 200. The lower end of the coupling 201 is sealed to the output shaft of the motor 101, and the upper end of the coupling 201 is sealed to the rotating shaft 202.

[0027] like Figure 1 , 2 As shown in Figure 4: The placement rack 102 includes an upper positioning plate 400 and a lower positioning plate 401 arranged in the vertical direction. Multiple support rods 402 are provided at the edge between the upper positioning plate 400 and the lower positioning plate 401. The upper end of the support rod 402 is welded to the lower surface of the upper positioning plate 400 or fixed by bolts, and the lower end of the support rod 402 is welded to the upper surface of the lower positioning plate 401 or fixed by bolts. The support rods 402 are spaced apart from the test tube 103, and the temperature regulating cavity 203 passes through the surface of the upper positioning plate 400.

[0028] like Figure 1 , 2As shown: The surface of the cylinder cover 104 is provided with several heat dissipation holes 105, which penetrate the surface of the cylinder cover 104 and are used for heat dissipation of the heater 301.

[0029] like Figure 1 , 2 As shown in Figures 3 and 4: An upper guide rail 403 is provided on the upper inner wall of the centrifuge cylinder 100, which is adapted to the rotation of the upper positioning disk 400. The upper guide rail 403 is welded to the inner wall of the centrifuge cylinder 100. The guide groove of the upper guide rail 403 is polished and adapted to the sliding edge of the upper positioning disk 400. A lower guide rail 404 is provided on the lower inner wall of the centrifuge cylinder 100, which is adapted to the rotation of the lower positioning disk 401. The upper guide rail 403 and the lower guide rail 404 are used to assist the rotation of the upper positioning disk 400 and the lower positioning disk 401, respectively. The lower guide rail 404 is welded to the inner wall of the centrifuge cylinder 100. The guide groove of the lower guide rail 404 is polished and adapted to the sliding edge of the lower positioning disk 401, thereby stabilizing the placement rack 102 to be more stable when it rotates.

[0030] Its effect is that the upper guide rail 403 and the lower guide rail 404 are used to assist the rotation of the upper positioning plate 400 and the lower positioning plate 401 respectively, thereby making the placement frame 102 more stable when rotating.

[0031] like Figure 1 , 2 As shown in Figure 4: A heat-insulating cavity 500 is embedded in the inner wall of the centrifuge cylinder 100. The heat-insulating cavity 500 is used to fill the heat-insulating layer 501. The heat-insulating layer 501 is used to insulate the outer wall of the centrifuge cylinder 100. A sealing ring 502 is fixedly provided on the top of the heat-insulating cavity 500. The sealing ring 502 is used to seal the heat-insulating cavity 500. An annular groove 503 is provided on the top wall of the sealing ring 502. The annular groove 503 is used to receive the positioning ring 504. A positioning ring 504 that matches the annular groove 503 is fixedly provided at the bottom of the cylinder cover 104. The positioning ring 504 is used to press into the annular groove 503 to make the connection between the centrifuge cylinder 100 and the cylinder cover 104 tighter.

[0032] Working principle: The cap 104 is placed over the top of the centrifuge cylinder 100, allowing the air outlets of the first and second air ducts 303 and 304 to extend into the temperature-regulating chamber 203. Cold or hot air is supplied by the heater 301, which then allows the temperature-regulating gas to enter the distribution duct 308 through the ventilation duct 302. This allows the distribution duct 308 to simultaneously supply air to the first and second air ducts 303 and 304. The temperature is then regulated by the first branch pipe 305 supplying air to the upper part of the centrifuge cylinder 100. Two branch pipes 306 supply air to the lower part of the centrifuge cylinder 100 for temperature regulation, so that the upper and lower parts of the centrifuge cylinder 100 can be simultaneously supplied with air for temperature regulation, thereby improving the speed of temperature regulation of the space inside the centrifuge cylinder 100. The outer wall of the centrifuge cylinder 100 is insulated by the insulation layer 501, and the positioning ring 504 is used to press into the annular groove 503 to make the connection between the centrifuge cylinder 100 and the cylinder cover 104 tighter, thereby further improving the heat preservation effect of the gas inside the centrifuge cylinder 100.

[0033] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A laboratory centrifuge device, comprising a motor (101) disposed at the bottom of a centrifuge tube (100), a mounting rack (102) rotatably disposed on the motor (101), a plurality of test tubes (103) fixedly placed on the mounting rack (102), and a cap (104) at the top of the centrifuge tube (100), characterized in that: A sealing plate (200) is provided above the motor (101), and a rotating shaft (202) rotatably connected to the motor (101) is provided above the sealing plate (200). The rotating shaft (202) is connected to the bottom of the placement rack (102). A temperature regulating cavity (203) is provided in the middle of the placement rack (102). A cavity (300) is provided inside the cylinder cover (104), and a heater (301) is provided inside the cavity (300). A ventilation outlet is provided at the air outlet of the heater (301). The ventilation duct (302) is connected to a first air duct (303) at its bottom and to a second air duct (304) at its upper part. The first air duct (303) passes through the bottom plate of the cylinder cover (104) and enters the upper part of the temperature regulating cavity (203). The second air duct (304) is located inside the first air duct (303). The first air duct (303) passes axially through the second air duct (304) and is located at the bottom of the temperature regulating cavity (203).

2. The laboratory centrifuge device as described in claim 1, characterized in that: The bottom of the first duct (303) is provided with multiple first branch pipes (305) connected around the perimeter, and the bottom of the second duct (304) is provided with multiple second branch pipes (306) connected around the perimeter.

3. A laboratory centrifuge as described in claim 2, characterized in that: The ventilation duct (302) includes a main air duct (307) that is sealed and connected to the air outlet of the heater (301), and a distribution air duct (308) that is vertically connected to the air outlet of the main air duct (307). The main air duct (307) is located in the middle of the distribution air duct (308).

4. A laboratory centrifuge as described in claim 3, characterized in that: The first duct (303) is connected to the bottom of the distribution duct (308) through the first reducing connector (309), and the second duct (304) is connected to the upper part of the distribution duct (308) through the second reducing connector (310). The diameter of the first duct (303) is larger than the diameter of the second duct (304), and the length of the second duct (304) is larger than the length of the first duct (303).

5. A laboratory centrifuge as described in claim 4, characterized in that: A coupling (201) is embedded in the middle of the sealing plate (200). The lower end of the coupling (201) is sealed to the output shaft of the motor (101), and the upper end of the coupling (201) is sealed to the rotating shaft (202).

6. A laboratory centrifuge as described in claim 5, characterized in that: The placement rack (102) includes an upper positioning plate (400) and a lower positioning plate (401) arranged in the vertical direction. Multiple support rods (402) are provided at the edge between the upper positioning plate (400) and the lower positioning plate (401). The support rods (402) are spaced apart from the test tube (103). The temperature regulating cavity (203) passes through the surface of the upper positioning plate (400).

7. A laboratory centrifuge apparatus as described in claim 6, characterized in that: The surface of the cylinder cover (104) is provided with several heat dissipation holes (105).

8. A laboratory centrifuge apparatus as described in claim 7, characterized in that: An upper guide rail (403) is provided on the upper inner wall of the centrifuge tube (100) to be adapted to the rotation of the upper positioning disk (400), and a lower guide rail (404) is provided on the lower inner wall of the centrifuge tube (100) to be adapted to the rotation of the lower positioning disk (401).

9. A laboratory centrifuge as described in claim 8, characterized in that: The centrifuge tube (100) has an insulated cavity (500) embedded in its inner wall. The insulated cavity (500) is filled with an insulation layer (501). A sealing ring (502) is fixedly provided on the top of the insulated cavity (500). An annular groove (503) is provided on the top wall of the sealing ring (502). A positioning ring (504) that matches the annular groove (503) is fixedly provided on the bottom of the tube cover (104).

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