A constant temperature shaker convenient to maintain

Abstract

The utility model discloses a constant temperature shaking table convenient to maintain, including box body shell, the bottom four corners of box body shell are all screw -threaded connection has the adjusting support, and the bottom inner wall of box body shell is fixed with the drive layer framework through screw, the middle part of drive layer framework is provided with bearing mounting seat, and the bearing mounting seat is installed with servo motor through bolt, the utility model discloses a layered structure through adopting drive layer framework, heat -preserving layer framework and carrier layer framework, and utilize first lock hole, second lock hole cooperation quick -release type cam lock realizes each layer quick locking and split, need not help complex tool to complete each layer separation, when servo motor, heating pipe etc. component failure, can directly targeted dismounting corresponding framework layer maintenance, greatly shorten maintenance time, reduce the influence to other components, simultaneously, carrier layer framework fixes heat -preserving layer through magic tape, only needs to peel off magic tape when replacing heat -preserving layer, further improves maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of biological experimental equipment technology, and in particular to a constant temperature shaker that is easy to maintain. Background Technology

[0002] Thermostatic shakers are core equipment in fields such as biological experiments, microbial culture, and chemical reactions. By simulating a stable temperature environment and controllable oscillation, they provide suitable growth or reaction conditions for experimental samples. They are widely used in biopharmaceuticals, environmental monitoring, food testing, and other scenarios, and are one of the key devices to ensure the accuracy of experimental data and the stability of experimental processes.

[0003] However, existing constant temperature shakers have significant shortcomings in practical use.

[0004] On the one hand, the internal structure of the equipment is mostly integrated, and there is no convenient disassembly mechanism between the drive components (such as motors and wheels), the insulation components (such as heating tubes and insulation layers) and the sample carrier components. When a component malfunctions and needs to be repaired or replaced, a large number of screws need to be removed or the entire equipment needs to be disassembled. This is not only cumbersome and time-consuming, but may also damage other normal components during the disassembly process, resulting in extremely low maintenance efficiency.

[0005] On the other hand, the temperature control accuracy is insufficient. Most devices only have temperature sensors in a single location, which cannot comprehensively monitor the temperature distribution in different areas inside the chamber. This can easily lead to local temperature deviations and uneven sample culture environment. At the same time, the insulation layer of some devices is fixed in a complicated way, which is inconvenient to disassemble and assemble. When the insulation performance deteriorates after long-term use, it is difficult to replace it quickly, which further affects the temperature stability. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a temperature-controlled shaker that is easy to maintain.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A maintenance-friendly constant temperature shaker includes a housing shell. Adjustable feet are threaded to the four bottom corners of the housing shell. A drive layer frame is fixed to the inner bottom wall of the housing shell with screws. A bearing mounting seat is located in the middle of the drive layer frame, and a servo motor is bolted to the bearing mounting seat. The output shaft of the servo motor is connected to an eccentric wheel, and a fixing connecting rod is welded to one side of the top outer wall of the eccentric wheel. A heat insulation layer frame is located directly above the drive layer frame. First locking holes are drilled through the four bottom corners of the heat insulation layer frame and the four top corners of the drive layer frame. A carrier layer skeleton is located at the top, and a second locking hole is opened through the four corners of the top of the insulation layer skeleton and the four corners of the bottom of the carrier layer skeleton. The inner walls of the first and second locking holes are locked by quick-release cam locks. A sliding groove is opened vertically on the top outer wall of the carrier layer skeleton, and a sliding wheel is slidably inserted into the inner wall of the sliding groove. The adjacent sliding wheels are fixedly connected to the same guide rail, and a guide block is slidably inserted into the inner wall of the guide rail. A fixed carrier plate is welded to one side of the outer wall of the guide block. A transparent cover plate is hinged to one side of the middle of the outer shell of the box, and a PLC controller is embedded in one side of the outer wall of the outer shell of the box.

[0008] As a further improvement of this utility model: the four corner steel pipes of the insulation layer frame are all fixed with mounting brackets by screws, and heating pipes are installed on the outer wall of the opposite side of the mounting brackets.

[0009] As a further embodiment of this utility model: the outer walls of the carrier layer skeleton are all glued with Velcro, and the outer walls of the Velcro are fixed with a heat insulation layer. The length of the heat insulation layer is the sum of the lengths of the drive layer skeleton, the heat insulation layer skeleton, and the carrier layer skeleton, and the width of the heat insulation layer is adapted to the width of the drive layer skeleton.

[0010] As a further embodiment of this utility model: the top outer wall of the fixed carrier plate has equidistantly distributed circular holes, and the inner wall of each circular hole is bonded with an anti-slip rubber sleeve.

[0011] As a further embodiment of this utility model: the bottom outer wall of the fixed carrier plate is fixed with a connecting support plate by screws, and a rectangular through groove is opened in the middle of the connecting support plate. Limiting brackets are slidably inserted into both sides of the bottom of the connecting support plate, and the bottom of the limiting brackets is fixed to the bottom of the outer shell of the box by screws.

[0012] As a further improvement of this utility model: the length of the rectangular through groove is adapted to the diameter of the eccentric wheel, and the width of the inner wall of the rectangular through groove is adapted to the diameter of the fixed connecting rod.

[0013] As a further improvement of this utility model: four temperature sensors are installed on the inner walls of the outer casing at equal distances and staggered positions, and the temperature sensors are interconnected with the PLC controller through signal lines.

[0014] Compared with the prior art, this utility model provides a constant temperature shaker that is easy to maintain and has the following beneficial effects: This invention effectively solves the problem of inconvenient maintenance of existing constant temperature shakers. By adopting a layered structure of drive layer skeleton, insulation layer skeleton, and carrier layer skeleton, and using the first and second locking holes in conjunction with quick-release cam locks, each layer can be quickly locked and separated without the need for complex tools. When components such as servo motors and heating tubes malfunction, the corresponding skeleton layer can be directly disassembled for maintenance, greatly shortening maintenance time and reducing the impact on other components. At the same time, the carrier layer skeleton fixes the insulation layer with Velcro, and when replacing the insulation layer, only the Velcro needs to be peeled off, further improving the convenience of maintenance.

[0015] This invention solves the problem of insufficient temperature control accuracy in existing equipment. Four temperature sensors with equal and staggered distribution are installed on the inner walls of the outer shell of the chamber, which can monitor the temperature of different areas inside the chamber from all directions. The temperature data is transmitted to the PLC controller in real time through signal lines to avoid local temperature deviations. The heating tubes are fixed to the four corners of the insulation layer frame by mounting brackets, resulting in more uniform heat distribution. Combined with the quickly replaceable insulation layer, the temperature inside the chamber can be maintained stably for a long time, providing a more precise culture environment for samples.

[0016] This invention inserts the sample tube requiring vibration into the inner wall of the circular hole in the fixed carrier plate. By utilizing the cooperation of the servo motor at the bottom, the eccentric wheel, the fixed connecting rod, and the connecting support plate, the fixed carrier plate can be oscillated at a uniform speed, resulting in smooth and uninterrupted oscillation, providing a uniform oscillation environment for the sample.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a constant temperature shaker that is easy to maintain, as proposed in this utility model. Figure 2 Side view of the overall unfolded structure of a constant temperature shaker that is easy to maintain, as proposed in this utility model; Figure 3 This is a first-view structural diagram of a constant-temperature shaker that is easy to maintain, as proposed in this utility model. Figure 4 This is a schematic diagram of the internal three-dimensional structure of a constant temperature shaker that is easy to maintain, as proposed in this utility model.

[0019] In the diagram: 1. Housing shell; 2. Adjustable support feet; 3. Drive layer frame; 4. Bearing mounting base; 5. Servo motor; 6. Eccentric wheel; 7. Fixed connecting rod; 8. Insulation layer frame; 9. First lock hole; 10. Carrier layer frame; 11. Second lock hole; 12. Quick-release cam lock; 13. Mounting bracket; 14. Heating tube; 15. Velcro; 16. Insulation layer; 17. Sliding groove; 18. Sliding wheel; 19. Guide rail; 20. Guide block; 21. Fixed carrier plate; 22. Circular locking hole; 23. Linkage support plate; 24. Limit bracket; 25. Rectangular through groove; 26. Transparent cover plate; 27. PLC controller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1:

[0021] An easy-to-maintain thermostatic shaker, as described in this embodiment, Figure 1-4 As shown, the enclosure includes a housing 1. Adjustable feet 2 are threaded to the four bottom corners of the housing 1. A drive layer frame 3 is fixed to the inner bottom wall of the housing 1 with screws. A bearing mounting seat 4 is located in the middle of the drive layer frame 3, and a servo motor 5 is bolted to the bearing mounting seat 4. The output shaft of the servo motor 5 is connected to an eccentric wheel 6, and a fixing connecting rod 7 is welded to one side of the top outer wall of the eccentric wheel 6. An insulation layer frame 8 is located directly above the drive layer frame 3, and first locking holes 9 are drilled through the four bottom corners of the insulation layer frame 8 and the four top corners of the drive layer frame 3. A carrier layer frame 10 is located directly above the insulation layer frame 8. The top four corners of the insulation layer frame 8 and the bottom four corners of the carrier layer frame 10 are all provided with second locking holes 11. The inner walls of the first locking hole 9 and the second locking hole 11 are all locked by rotation through a quick-release cam lock 12. The top outer wall of the carrier layer frame 10 is provided with a sliding groove 17 in the vertical direction, and a sliding wheel 18 is slidably inserted into the inner wall of the sliding groove 17. The adjacent sliding wheels 18 are fixedly connected to the same guide rail 19, and a guide block 20 is slidably inserted into the inner wall of the guide rail 19. A fixed carrier plate 21 is welded to one side of the outer wall of the guide block 20. A transparent cover plate 26 is hinged to one side of the middle part of the outer shell 1, and a PLC controller 27 is embedded in one side of the outer wall of the outer shell 1. The quick-release cam lock 12 is an industrial-grade quick-release lock, model CL-201. Inserting it into the lock hole and rotating it 90° locks it in place; rotating it in the opposite direction disassembles it. The mounting bracket 13 in the middle of the four corner steel pipes of the insulation layer frame 8 is an L-shaped galvanized steel plate, fixed with M4 screws. The heating tubes 14 are stainless steel heating tubes, model SH-220V-500W, installed on the outer wall of opposite sides of the mounting bracket 13, two on each side, for a total of four, ensuring even heat distribution. The four corner steel pipes of the insulation layer frame 8 are all fixed with mounting brackets 13 by screws, and heating tubes 14 are installed on the outer wall of the opposite side of the mounting brackets 13. The outer walls of the carrier layer frame 10 are all glued with Velcro 15, and the outer wall of the Velcro 15 is fixed with an insulation layer 16. The length of the insulation layer 16 is the sum of the lengths of the driving layer frame 3, the insulation layer frame 8, and the carrier layer frame 10, and the width of the insulation layer 16 is adapted to the width of the driving layer frame 3. The top outer wall of the fixed carrier plate 21 has equidistant circular holes 22, and the inner wall of each circular hole 22 is covered with an anti-slip rubber sleeve.

[0022] The bottom outer wall of the fixed carrier plate 21 is fixed with a connecting support plate 23 by screws, and a rectangular through slot 25 is opened through the middle of the connecting support plate 23. Limiting brackets 24 are slidably inserted into both sides of the bottom of the connecting support plate 23, and the bottom of the limiting brackets 24 is fixed to the bottom of the outer shell 1 of the box by screws. Working principle: The operation of this constant temperature shaker revolves around two core functions: "temperature control" and "oscillation drive," as detailed below: Equipment startup and parameter settings: Before the experiment, open the transparent cover 26, place the culture bottle containing the sample into the circular card hole 22 of the fixed carrier plate 21, fix the position of the culture bottle with the anti-slip rubber sleeve, close the transparent cover 26, and set the target temperature such as 37℃ and the oscillation frequency such as 150rpm through the operation interface of the PLC controller 27.

[0023] Temperature control process: After receiving the set temperature, the PLC controller 27 sends a signal to the relay to control the heating element 14 to power on and heat up. At the same time, the DS18B20 temperature sensors around the outer shell 1 collect temperature data of different areas inside the chamber in real time and transmit the data to the PLC controller 27 through the signal line. When the PLC detects that the temperature is lower than the set value, it keeps the heating element 14 working. When the temperature reaches the set value, the PLC controls the heating element 14 to be powered off. If there is a local temperature deviation, the PLC fine-tunes the working state of the heating element 14 according to the feedback data of different sensors to ensure that the temperature inside the chamber is uniform and stable within the set range.

[0024] Oscillation Drive Process: The PLC controller 27 sends a pulse signal to the servo driver, which drives the MSME-022G1 servo motor 5 to rotate at a set frequency. The output shaft of the servo motor 5 drives the eccentric wheel 6 to rotate. The fixed connecting rod 7 on the eccentric wheel 6 moves in a circular motion with the wheel. Since the fixed connecting rod 7 is inserted into the rectangular through slot 25 of the connecting support plate 23, and the two sides of the connecting support plate 23 are restricted by the limiting bracket 24 to slide horizontally, the circular motion of the fixed connecting rod 7 is converted into the horizontal reciprocating motion of the connecting support plate 23. The connecting support plate 23 drives the fixed carrier plate 21 to move. The fixed carrier plate 21 slides along the guide rail 19 through the guide block 20. At the same time, the guide rail 19 slides along the sliding groove 17 of the carrier layer skeleton 10 through the sliding wheel 18 to ensure that the oscillation motion of the fixed carrier plate 21 is smooth and without jamming, providing a uniform oscillation environment for the sample.

[0025] Anomaly Monitoring and Shutdown: During equipment operation, the temperature sensor continuously transmits temperature data to the PLC controller 27. If the detected temperature exceeds the safe range, such as above 45℃ or below 0℃, the PLC immediately controls the heating tube 14 and servo motor 5 to stop working and provides an alarm notification through the interface. If the servo motor 5 experiences an overload or other abnormality, the servo driver will send a fault signal to the PLC, which will also trigger a shutdown and alarm to ensure the safety of the equipment and samples. After the experiment, the equipment can be stopped by the PLC controller 27, and the samples can be removed by opening the transparent cover 26. If maintenance is required, simply rotate the quick-release cam lock 12 to disassemble each skeleton layer or peel off the Velcro 15 to replace the insulation layer 16. The operation is convenient and efficient. Example 2:

[0026] An easy-to-maintain thermostatic shaker, such as Figure 1-4 As shown, this embodiment makes the following additions based on embodiment 1: the length of the rectangular through groove 25 is adapted to the diameter of the eccentric wheel 6, and the width of the inner wall of the rectangular through groove 25 is adapted to the diameter of the fixed connecting rod 7. Four temperature sensors are installed on the inner walls of the outer casing 1 of the housing at equal distances and staggered distribution, and the temperature sensors are connected to the PLC controller 27 through signal lines. The PLC controller 27, model S7-200SMARTSR20, is embedded in the outer wall of one side of the housing 1. The transparent cover 26 is made of 5mm thick tempered glass and is hinged to the housing 1 for easy observation of the internal sample status. Four temperature sensors, model DS18B20 digital temperature sensors, are installed at equal and staggered intervals on the inner walls of the housing 1. Each sensor is connected to the analog input port of the PLC controller 27 via a signal cable of RVV2*0.5 specification. The servo motor 5 is connected to the digital output port of the PLC controller 27 via a servo driver of model MDDDT3530. The heating element 14 is connected to the digital output port of the PLC controller 27 via a relay of model HH52P, enabling the PLC to precisely control the motor speed and the start / stop of the heating element.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A temperature-controlled shaker that is easy to maintain, comprising a housing shell (1), characterized in that, The bottom four corners of the outer shell (1) of the box are threaded with adjusting feet (2), and the bottom inner wall of the outer shell (1) is fixed with a drive layer frame (3) by screws. The middle of the drive layer frame (3) is provided with a bearing mounting seat (4), and a servo motor (5) is installed on the bearing mounting seat (4) by bolts. The output shaft of the servo motor (5) is connected to an eccentric wheel (6), and a fixing connecting rod (7) is welded to one side of the top outer wall of the eccentric wheel (6). The top of the drive layer frame (3) is provided with a heat insulation frame (8), and the bottom four corners of the heat insulation frame (8) and the top four corners of the drive layer frame (3) are all provided with first locking holes (9). The top of the heat insulation frame (8) is provided with a carrier layer frame (10), and the heat insulation frame (8) is provided with a carrier layer frame (10). The top four corners and the bottom four corners of the carrier layer skeleton (10) are all provided with second lock holes (11). The inner walls of the first lock hole (9) and the second lock hole (11) are locked by a quick-release cam lock (12). The top outer wall of the carrier layer skeleton (10) is provided with a sliding groove (17) in the vertical direction. The inner wall of the sliding groove (17) is slidably connected with a sliding wheel (18). The adjacent sliding wheels (18) are fixedly connected with the same guide rail (19). The inner wall of the guide rail (19) is slidably connected with a guide block (20). A fixed carrier plate (21) is welded to one side of the outer wall of the guide block (20). A transparent cover plate (26) is hinged to one side of the middle part of the outer shell (1). A PLC controller (27) is embedded in one side of the outer wall of the outer shell (1).

2. The easy-to-maintain constant temperature shaker according to claim 1, characterized in that, The four corner steel pipes of the insulation layer frame (8) are all fixed with mounting brackets (13) by screws, and heating pipes (14) are installed on the outer wall of the opposite side of the mounting brackets (13).

3. The easy-to-maintain constant temperature shaker according to claim 1, characterized in that, The outer walls of the carrier layer skeleton (10) are all attached with Velcro (15), and the outer walls of the Velcro (15) are fixed with a heat insulation layer (16). The length of the heat insulation layer (16) is the sum of the lengths of the drive layer skeleton (3), the heat insulation layer skeleton (8), and the carrier layer skeleton (10), and the width of the heat insulation layer (16) is adapted to the width of the drive layer skeleton (3).

4. The easy-to-maintain constant temperature shaker according to claim 1, characterized in that, The top outer wall of the fixed carrier plate (21) has equidistant circular holes (22) and the inner wall of each circular hole (22) is bonded with an anti-slip rubber sleeve.

5. A temperature-controlled shaker that is easy to maintain according to claim 1, characterized in that, The bottom outer wall of the fixed carrier plate (21) is fixed with a connecting support plate (23) by screws, and a rectangular through slot (25) is opened through the middle of the connecting support plate (23). Limiting brackets (24) are slidably inserted on both sides of the bottom of the connecting support plate (23), and the bottom of the limiting brackets (24) is fixed to the bottom of the outer shell (1) of the box by screws.

6. A constant temperature shaker that is easy to maintain according to claim 5, characterized in that, The length of the rectangular through groove (25) is matched with the diameter of the eccentric wheel (6), and the width of the inner wall of the rectangular through groove (25) is matched with the diameter of the fixed connecting rod (7).

7. The easy-to-maintain constant temperature shaker according to claim 1, characterized in that, Four temperature sensors are installed on the inner walls of the outer casing (1) at equal distances and staggered positions, and the temperature sensors are connected to the PLC controller (27) through signal lines.

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