Table type low-speed centrifugal machine

Abstract

The utility model belongs to the technical field of centrifugal machines, and particularly relates to a table type low-speed centrifugal machine which comprises an installation base and supporting legs fixed to the four corners of the installation base, a centrifugal shell is fixedly installed on the installation base, a connecting piece is fixedly installed on the side wall of the centrifugal shell, and an installation piece is rotationally connected to the connecting piece. And the mounting piece is fixedly connected with the cover plate, and one end of the mounting piece is rotationally connected with an electric push rod. According to the utility model, the unique structural design ensures stable operation, the mounting seat is tightly connected with the supporting legs and all parts, vibration and displacement are effectively resisted, accurate sealing and protection mechanisms such as a cover plate sealing ring and a protective cover are adopted, a sample is prevented from being leaked and polluted, personnel safety and the service life of transmission parts are guaranteed, and the test tube is stably and reliably fixed; the double-layer triangular staggered fixing seat is matched with the special mounting groove, so that the centrifugal precision and the sample integrity are improved, the experiment accuracy, the experiment efficiency and the equipment durability are greatly enhanced, and the experiment process and the result quality are optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifuge technical field, concretely is a table type low speed centrifuge. BACKGROUND

[0002] Generally, the traditional table type low speed centrifuge may have some deficiencies in structural design and use convenience.

[0003] On the one hand, the cover plate opening and closing mode of the traditional centrifuge may be relatively cumbersome, which is not conducive to rapid operation and frequent use. For example, some old centrifuges may need to manually lift the cover plate, which is inconvenient and laborious to operate, and there may be safety hazards during operation, such as accidentally pinching hands.

[0004] On the other hand, the traditional centrifuge may not be stable and reliable in fixing the test tube. If the test tube is not fixed firmly during high-speed rotation, it is easy to loosen, shift, or even break, resulting in sample loss and experimental failure. At the same time, the transmission system of the traditional centrifuge may not be stable and efficient, affecting the centrifugal effect and the service life of the equipment.

[0005] In addition, the traditional table type low speed centrifuge may have deficiencies in protection design. For example, the transmission part may not have a good protection device, which is easy to be affected by external dust, impurities, etc., thereby reducing the transmission efficiency and the reliability of the equipment. Moreover, the lack of protection device may also pose a certain safety risk to the operator.

[0006] In summary, in order to solve the problems of the traditional table type low speed centrifuge, its structure needs to be optimized and improved to improve its use convenience, stability and safety. SUMMARY

[0007] (I) Technical problem solved

[0008] In view of the deficiencies of the prior art, the utility model provides a table type low speed centrifuge, which solves the problems proposed in the above background technology.

[0009] (II) Technical scheme

[0010] The utility model discloses in order to realize above-mentioned purpose specifically adopts following technical scheme:

[0011] A table low speed centrifuge, including mounting seat and the leg fixed at four corners of mounting seat, the centrifugal shell is fixedly installed on the mounting seat, the connecting piece is fixedly installed on the side wall of centrifugal shell, the mounting piece is rotatably connected on the connecting piece, the mounting piece is fixedly connected with the cover plate, one end of the mounting piece is rotatably connected with the electric push rod, the bottom of the electric push rod is rotatably connected with the rotating seat, the rotating seat is fixedly installed on the mounting seat, the mounting seat is fixedly installed with the speed reducer motor, the output end of the speed reducer motor is fixedly connected with the driving disc, the belt is rotatably connected on the driving disc, the inner circle of the belt is rotatably connected with the auxiliary disc, the auxiliary disc is fixedly connected with the transmission shaft, the transmission shaft extends to the inside through the mounting seat and the centrifugal shell, the side of the transmission shaft is fixedly connected with the fixed seat, the fixed seat is equipped with the test tube installation groove.

[0012] Further, the bottom of the leg is provided with a mounting plate, and the mounting plate is provided with a mounting hole.

[0013] Further, the cover plate is matched with the diameter of the centrifugal shell, and a sealing ring is installed around the cover plate, and a transparent glass is installed at the center of the cover plate.

[0014] Further, the driving disc, the belt, the auxiliary disc and the transmission shaft are in the shroud, and the shroud is installed at the bottom of the mounting seat.

[0015] Further, the installation height of the shroud is higher than the height of the leg, so that the shroud is prevented from contacting the bottom.

[0016] Further, the test tube installation groove does not penetrate the fixed seat and has a certain thickness, so that the test tube can be stably fixed.

[0017] Further, the fixed seat is provided with double layers and is distributed in a triangular shape around the transmission shaft, and each fixed seat is staggered.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the table low speed centrifuge has the following beneficial effects:

[0020] The unique structure design of the table low speed centrifuge ensures stable operation, the mounting seat and the leg and the components are closely connected, vibration and displacement are effectively resisted, accurate sealing and protection mechanism such as the cover plate sealing ring and the shroud prevent sample leakage and pollution, ensure personnel safety and the service life of the transmission component, the test tube is stably and reliably fixed, the double-layer triangular staggered fixed seat is matched with the special installation groove, the centrifugal precision and the sample integrity are improved, the experimental accuracy, efficiency and equipment durability are greatly enhanced, and the experimental process and the quality of the results are optimized. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1The utility model discloses a three-dimensional structure schematic diagram.

[0022] Figure 2 The utility model discloses a side view structure schematic diagram.

[0023] Figure 3 The utility model discloses a rear view structure schematic diagram.

[0024] Figure 4 The utility model discloses a transmission shaft, fixed seat and test tube installation groove design structure schematic diagram.

[0025] In the drawing: 1, mounting seat, 2, support leg, 3, centrifugal shell, 4, connecting piece, 5, cover plate, 6, mounting piece, 7, electric push rod, 8, rotating seat, 9, speed reducer motor, 10, driving disc, 11, belt, 12, auxiliary disc, 13, shield, 14, transmission shaft, 15, fixed seat, 16, test tube installation groove. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0027] EMBODIMENT

[0028] As Figures 1-4 shown, an embodiment of the utility model provides a benchtop low speed centrifuge, including mounting seat 1 and the support leg 2 of four corners fixed in mounting seat 1;

[0029] Mounting seat 1 and support leg 2, mounting seat 1 is board-like or block-like structure, provides the installation platform for each part of centrifuge. The support leg 2 of its four corners extends vertically downward, and the mounting plate at the bottom of support leg 2 is flat, and the mounting holes are evenly distributed on the mounting plate, to ensure stable connection with the external supporting surface.

[0030] Function: mounting seat 1 bears the weight of centrifugal shell 3, power transmission system and other core components and the stress generated during operation, and disperses the load to support leg 2. Support leg 2 transmits force to the mounting surface, and the stable support effect ensures the smooth operation of the centrifuge, prevents the loosening of components, sample splashing and experimental errors caused by shaking. The mounting holes facilitate bolt fastening according to the experimental layout and the table or support, enhance the overall stability, and ensure the safe and accurate development of the experiment.

[0031] The centrifugal shell 3 is a cavity structure of approximate cylinder or prism, the connecting piece 4 of the side wall is a metal block or a plastic block with a pivot function, and is nested with the corresponding part of the mounting piece 6 to realize rotary connection. The cover plate 5 is a circular or rectangular plate, which is complementary to the shape of the centrifugal shell 3, and the sealing ring at the edge is made of elastic rubber material and is tightly fitted. One end of the mounting piece 6 is rigidly connected with the cover plate 5, and the other end is connected with the head of the electric push rod 7 through a pin shaft, the bottom of the electric push rod 7 is connected with the rotating seat 8 through a universal joint, and the rotating seat 8 is firmly welded on the mounting base 1.

[0032] Effect: The centrifugal shell 3 creates a closed and safe space for the centrifugal process, bears and disperses the centrifugal force, and protects the internal components and the sample. The connecting piece 4 and the mounting piece 6 form a flexible and reliable cover plate 5 connection mechanism, which is convenient for opening and closing operation. The electric push rod 7 accurately extends and retracts under the instruction of the control system, drives the cover plate 5 to stably ascend and descend, and the sealing ring ensures the air tightness of the chamber when closed, preventing sample leakage, pollution and external impurity interference. The transparent glass facilitates real-time observation of the centrifugal state, optimizing the operation experience and experimental efficiency.

[0033] The speed reducer motor 9 is compactly installed in the motor installation position reserved in the mounting base 1, and the output shaft is concentrically keyed connected with the driving disc 10. The driving disc 10 is a metal disc with a trapezoidal groove on the edge for adapting the belt 11. The belt 11 is made of high-strength rubber or polyurethane material, and the inner surface is toothed to accurately mesh with the driving disc 10 and the auxiliary disc 12. The auxiliary disc 12 is rigidly connected with the transmission shaft 14 through a key or a spline, the transmission shaft 14 penetrates the mounting base 1 and the centrifugal shell 3 through a precision bearing, and the guard 13 is a metal or plastic cover suspended from the bottom of the mounting base 1 with a height exceeding the support leg 2, which protects the transmission components in all directions.

[0034] Effect: The speed reducer motor 9 outputs stable speed and torque according to experimental requirements, which is efficiently and losslessly transmitted to the transmission shaft 14 through the driving disc 10, the belt 11 and the auxiliary disc 12, driving the test tube fixed seat 15 to stably rotate. The belt 11 transmission has buffering and shock absorption, noise reduction, easy maintenance and is suitable for different working conditions. The guard 13 shields dust, water vapor and foreign matter, maintains the cleanliness and dryness of the transmission components, reduces wear and corrosion, reduces the risk of failure, prolongs the service life, ensures the long-term reliable operation of the equipment and the safety of the operator.

[0035] The fixed seat 15 is integrally formed by metal or high-strength engineering plastic, and the double layers are distributed on both sides of the transmission shaft 14 in the form of equilateral triangle, and are staggered.

[0036] Function: The fixed seat 15 with double-layer triangular staggered layout builds a stable three-dimensional framework, multi-directionally constrains the test tube, disperses the centrifugal force, eliminates the risk of loosening, displacement, and rupture, and guarantees the safety and integrity of the sample. The test tube installation slot 16 precisely fits the profile of the test tube, the non-slip liner increases friction, and the thick-walled bottom provides strong support to ensure that the test tube is vertically centered, maintains balance and stability, improves the precision and reliability of centrifugation, and lays a foundation for the accuracy of experimental results.

[0037] When the table centrifuge is working, the reduction motor 9 starts, and its output end drives the driving disc 10 to rotate, which drives the auxiliary disc 12 to rotate through the belt 11, and then makes the transmission shaft 14 rotate stably. The test tube installation slot 16 in the fixed seat 15 fixed on the side of the transmission shaft 14 is distributed in a double-layer triangular staggered manner, which firmly clamps the test tube to be centrifuged, and the sample in the test tube is rapidly stratified or separated according to the density difference under the action of strong centrifugal force with the high-speed rotation of the transmission shaft 14. The installation seat 1 and its four corner legs 2 stably support the overall structure to ensure smooth operation without shaking. The centrifuge shell 3 provides a closed and safe space for centrifugation operation, and the side wall connecting piece 4 cooperates with the mounting piece 6 to realize flexible opening and closing of the cover plate 5. The electric push rod 7 precisely controls the action of the cover plate 5, and the sealing ring and transparent glass of the cover plate 5 ensure sealing and facilitate observation. The shroud 13 effectively protects the power transmission system from external interference, and all components work together to accurately and efficiently complete the centrifugal separation task, meeting various experimental needs.

[0038] As shown in Figure 1 , in some embodiments, the bottom of the leg 2 is provided with a mounting plate, and the mounting plate is provided with a mounting hole; the design of the mounting plate and the mounting hole gives the centrifuge high flexibility in installation, allowing it to seamlessly adapt to various experimental scenarios. In the laboratory benchtop installation scenario, by precisely matching the mounting points reserved on the benchtop with the mounting holes, and using bolts for tight connection, the centrifuge can be stably installed at the desired operating height and position, facilitating operation by the experimental personnel and sample processing.

[0039] As shown in Figure 1 , in some embodiments, the cover plate 5 matches the diameter of the centrifuge shell 3, and a sealing ring is installed around it. A transparent glass is installed at the center of the cover plate 5; the transparent glass at the center of the cover plate 5 provides a real-time observation window for the experimental personnel.

[0040] As shown in Figure 2 , in some embodiments, the driving disc 10, belt 11, auxiliary disc 12, and transmission shaft 14 are in the shroud 13, which is installed at the bottom of the installation seat 1; the shroud 13 is precisely positioned at the bottom of the installation seat 1, and its depth is consistent with the mechanical principle and spatial layout logic of the overall structure of the centrifuge; this structural design eliminates the intrusion path of foreign matter from the root.

[0041] As shown in Figure 2As shown, in some embodiments, the installation height of the protective cover 13 is higher than the height of the support leg 2 to prevent the protective cover 13 from contacting the bottom; the design eliminates the possibility of the protective cover 13 directly contacting the placement surface from the outset.

[0042] like Figure 4 As shown, in some embodiments, the test tube mounting groove 16 does not penetrate the fixing base 15 and has a certain thickness, which can stably fix the test tube; prevent the test tube from passing through the bottom of the test tube mounting groove 16, eliminate the risk of test tube loosening or falling off due to lack of bottom support, ensure that the sample can be safely and stably centrifuged under extreme working conditions, and lay a solid foundation for obtaining accurate experimental data.

[0043] like Figure 4 As shown, in some embodiments, the fixing seats 15 are arranged in a double layer in a triangular pattern around the drive shaft 14, and the fixing seats 15 are staggered. The staggered arrangement of the fixing seats 15 optimizes space utilization and enhances the fixation effect on the test tubes, while also being able to fix multiple sets.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A benchtop low speed centrifuge comprising a mounting base (1) and legs (2) fixed at the four corners of the mounting base (1), characterised in that: The mounting seat (1) is fixedly installed with a centrifugal shell (3), a connecting piece (4) is fixedly installed on the side wall of the centrifugal shell (3), the connecting piece (4) is rotatably connected with a mounting piece (6), the mounting piece (6) is fixedly connected with a cover plate (5), one end of the mounting piece (6) is rotatably connected with an electric push rod (7), the bottom of the electric push rod (7) is rotatably connected with a rotating seat (8), the rotating seat (8) is fixedly installed on the mounting seat (1), a reduction motor (9) is fixedly installed on the mounting seat (1), the output end of the reduction motor (9) is fixedly connected with a driving disc (10), the driving disc (10) is rotatably connected with a belt (11), the inner ring of the belt (11) is drivingly connected with an auxiliary disc (12), the auxiliary disc (12) is fixedly connected with a transmission shaft (14), the transmission shaft (14) extends to the inside through the mounting seat (1) and the centrifugal shell (3), the side edge of the transmission shaft (14) is fixedly connected with a fixed seat (15), the fixed seat (15) is provided with a test tube mounting groove (16).

2. A bench top low speed centrifuge as claimed in claim 1, wherein: The bottom of the supporting leg (2) is provided with a mounting plate, and the mounting plate is provided with a mounting hole.

3. A bench top low speed centrifuge as claimed in claim 1, wherein: The diameter of the cover plate (5) matches that of the centrifugal shell (3), a sealing ring is installed around the cover plate (5), and a transparent glass is installed at the center of the cover plate (5).

4. A bench top low speed centrifuge as claimed in claim 1, wherein: The driving disc (10), the belt (11), the auxiliary disc (12) and the transmission shaft (14) are in a protective cover (13), and the protective cover (13) is installed at the bottom of the mounting seat (1).

5. A bench top low speed centrifuge as claimed in claim 4, wherein: The installation height of the protective cover (13) is higher than the height of the supporting leg (2), so that the protective cover (13) is prevented from contacting the bottom.

6. A bench top low speed centrifuge as claimed in claim 1, wherein: The test tube mounting groove (16) does not penetrate the fixed seat (15) and has a thickness, so that the test tube can be stably fixed.

7. A bench top low speed centrifuge as claimed in claim 1, wherein: The fixed seat (15) is provided with double layers and is triangularly distributed around the transmission shaft (14), and each fixed seat (15) is designed in an interlaced manner.

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