A plate washer lift plate rack support device

Abstract

A kind of plate washer lifting plate rack support device, support device includes: base, driving mechanism is fixedly connected to the base, the driving mechanism includes push block, further include the screw rod that is passed through the push block, with the screw rod screw connection of push block, and the bracket fixedly connected to the push block;Support plate, fixedly connected to the bracket, and located the side of the bracket away from the base;Microplate, located the side of the support plate away from the bracket, the microplate is connected with several infusion pipelines;Wherein, the driving mechanism drives the screw rod rotation, the push block moves on the screw rod along first direction, the support plate moves to the side away from the base, and with the microplate compression, cleaning fluid enters the microplate by infusion pipeline, and from the microplate to the support plate drop.

Description

Technical Field

[0001] This utility model relates to the field of plate washing machines for enzyme-linked immunosorbent assay (ELISA) analyzers, and in particular to a lifting plate frame support device for a plate washing machine. Background Technology

[0002] Plate washer is a key piece of equipment in enzyme-linked immunosorbent assay (ELISA) and other microplate-based experiments. Its core function is to efficiently and thoroughly clean microplates by automatically completing steps such as liquid injection, soaking and liquid aspiration to remove unbound interfering substances and ensure the accuracy and reliability of experimental results.

[0003] In the internal structure of a plate washer, the plate holder support device used to support and position the microporous plate is one of the core components. Its performance directly affects the sealing, reliability, and risk of cross-contamination during the cleaning process. Currently, most mainstream plate washers on the market adopt a top-moving, bottom-stationary working method, where the microporous plate is fixed on the lower support platform, while the needle holder, which integrates injection and suction needles, moves from top to bottom under the drive mechanism, pressing against the microporous plate to complete the cleaning operation. However, this traditional top-moving structure has some drawbacks. First, the needle holder and its connected liquid system, including various infusion and gas lines, have a large overall mass. Frequent lifting and lowering movements can cause repeated bending of the tubing, easily leading to fatigue aging, cracking, or loosening of joints, resulting in leakage risks. At the same time, the movement of the tubing also generates additional interference torque on the needle holder, affecting its positioning accuracy and stability. For multi-threaded cleaning applications that require the injection of multiple sets of cleaning fluid, the liquid system is even more complex, with a greater number of connected pipes. In the traditional structure, all these pipes must move along with the needle holder, which not only exacerbates the aforementioned pipe lifespan and interference problems, but also makes the internal layout of the equipment cramped, making maintenance and pipe replacement extremely inconvenient. In addition, in the bottom-up pressing motion, if some drive mechanisms such as cylinders or motors are de-energized, the support plate may fall due to gravity, creating a gap between the support plate and the injection plate, which may lead to leakage.

[0004] Therefore, it is necessary to provide a plate washing machine lifting plate support device that can prevent the liquid pipeline from moving when injecting multiple sets of cleaning fluid and can effectively prevent the plate frame from falling due to gravity when the drive mechanism is de-energized. Utility Model Content

[0005] The purpose of this invention is to provide a lifting plate support device for a plate washing machine that can prevent the liquid pipeline from moving when injecting multiple sets of cleaning fluid and can effectively prevent the plate frame from falling due to gravity when the drive mechanism is de-energized.

[0006] According to one aspect of this application, a lifting frame support device for a plate washing machine is provided, the support device comprising: Base A drive mechanism is fixedly connected to the base. The drive mechanism includes a push block, a lead screw that passes through the push block and is threadedly connected to the push block, and a bracket fixedly connected to the push block. The tray is fixedly connected to the bracket and is located on the side of the bracket away from the base; A microporous plate is located on the side of the support plate away from the bracket, and the microporous plate is connected to several infusion lines; The drive mechanism drives the lead screw to rotate, the push block moves along the lead screw in a first direction, the tray moves away from the base and presses against the microporous plate, and the cleaning fluid enters the microporous plate through the infusion line and drips from the microporous plate onto the tray.

[0007] More preferably, the drive mechanism further includes: A limiting plate is located at both ends of the lead screw, and the lead screw is rotatably connected to the limiting plate; A limiting rod passes through the push block and is fixedly connected between the two limiting plates.

[0008] More preferably, the limiting plate limits the sliding of the push block on the lead screw in the first direction, and the limiting rod limits the push block in the horizontal direction.

[0009] More preferably, the support device further includes: A support plate is fixedly connected to the base and is located on the side of the base where the drive mechanism is located; The surface of the support plate is perpendicular to the surface of the base.

[0010] More preferably, the support device further includes: A fixing plate is fixedly connected to the support plate and is located on the side of the support plate opposite to the base; The fixing plate is parallel to the surface of the base.

[0011] More preferably, the microporous plate is fixedly connected to the fixing plate and located between the fixing plate and the support plate.

[0012] More preferably, the surface of the microporous plate is parallel to the surface of the support plate.

[0013] More preferably, the support device further includes: A solenoid valve is fixedly connected to the base and located on the side of the base where the drive mechanism is located; The solenoid valve is connected to the infusion line and drives the infusion line to deliver cleaning fluid to the microporous plate.

[0014] More preferably, the drive mechanism further includes: The motor is fixedly connected to the base and is located on the side of the lead screw away from the support plate; The output shaft of the motor is connected to the lead screw to drive the lead screw to rotate.

[0015] More preferably, the support device further includes: The circuit board is fixedly connected to the fixing plate and is located on the side of the fixing plate opposite to the support plate; The circuit board integrates electronic components to control the operation of the support device.

[0016] This utility model has the following beneficial effects: The drive mechanism moves the support plate upwards along the first direction to move the microporous plate, eliminating the need for the microporous plate to move and preventing the infusion tubing connected to it from moving as well, thus preventing the infusion tubing from frequently rising and falling with the microporous plate. A lead screw drives a push block, which in turn moves the support and the microporous plate on the support. This allows the drive mechanism to be powered off at a set time, and the lead screw's thread can also limit the push block's movement in the first direction, preventing the push block from falling due to gravity and eliminating any gaps between the microporous plate and the support plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is one embodiment of the present application; Figure 2 This is one embodiment of the present application; Figure 3 This is one embodiment of the present application; Explanation of reference numerals: 100, Support device; 10, Base; 20, Drive mechanism; 21, Push block; 22, Lead screw; 23, Bracket; 24, Limiting plate; 25, Limiting rod; 26, Motor; 30, Support plate; 40, Microporous plate; 41, Infusion tubing; 50, Support plate; 60, Fixing plate; 70, Solenoid valve; 80, Circuit board; F1, First direction. Detailed Implementation

[0019] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to Figure 1 - Figure 3 One embodiment of this application provides a lifting plate support device 100 for a plate washing machine. The support device 100 includes: a base 10, a drive mechanism 20, a support plate 30, and a micro-perforated plate 40.

[0023] The driving mechanism 20 is fixedly connected to the base 10. The driving mechanism 20 includes a push block 21, a lead screw 22 that passes through the push block 21 and is threadedly connected to the push block 21, and a bracket 23 fixedly connected to the push block 21. The tray 30 is fixedly connected to the bracket 23 and is located on the side of the bracket 23 away from the base 10. The microporous plate 40 is located on the side of the tray 30 away from the bracket 23, and the microporous plate 40 is connected to a plurality of infusion lines 41. The driving mechanism 20 drives the lead screw 22 to rotate, the push block 21 moves along the first direction F1 on the lead screw 22, the tray 30 moves to the side away from the base 10 and presses against the microporous plate 40, and the cleaning fluid enters the microporous plate 40 through the infusion lines 41 and drips from the microporous plate 40 to the tray 30.

[0024] The base 10, serving as the mounting structure for the entire device, is a flat plate bolted to the main frame of the plate washing machine. The base 10 provides a stable mounting reference for all other components. The drive mechanism 20 is integrally fixed to the upper surface of the base 10. The drive mechanism 20 mainly includes a motor 26, a lead screw 22, a push block 21, a bracket 23, a limiting plate 24, and a limiting rod 25. The motor 26 is fixed to the upper surface of the base 10 via a motor 26 mounting base, with its output shaft facing directly downwards. The lead screw 22 is positioned along the first direction F1, i.e., the vertical direction, and its lower end is coaxially connected to the output shaft of the motor 26 via a coupling, chain, and gear, thereby achieving power transmission. The upper and lower ends of the lead screw 22 are rotatably connected to the two limiting plates 24 via bearings. Of the two limiting plates 24, the lower limiting plate 24 is firmly fixed to the base 10 with bolts, and the upper limiting plate 24 is fixed by limiting rods 25. Their main function is to support the lead screw 22 and ensure its stable rotation, while precisely limiting the vertical movement position of the lead screw 22. The push block 21 has a threaded hole machined in its center that matches the lead screw 22, forming a high-precision threaded transmission pair with the lead screw 22. The push block 21 is fitted onto the lead screw 22. To prevent the push block 21 from rotating with the lead screw 22, the drive mechanism 20 is also provided with two limiting rods 25 parallel to the lead screw 22, forming a stable frame. The limiting rods 25 pass through corresponding holes on the push block 21. Their function is to limit the push block 21 in the horizontal direction, forcing the push block 21 to only move linearly in the vertical direction when the lead screw 22 rotates, thereby accurately converting the rotational motion of the lead screw 22 into the linear motion of the push block 21. The support 23 is fixedly connected to the upper surface or side of the push block 21 and moves synchronously with the push block 21. The support 23 extends horizontally and spans the support plate 50. The support plate 30 is fixedly connected to the support 23 by bolts and is located directly above the support 23. The support plate 30 is a flat plate-shaped component whose dimensions match the microporous plate 40, used to support and push against the microporous plate 40 during the upward movement. Several infusion lines 41 are connected to the side of the microporous plate 40, which are used to deliver cleaning fluid. When the cleaning program starts, the motor 26 receives a control signal and starts to rotate, driving the lead screw 22 to rotate synchronously. Under the constraint of the limit rod 25, the push block 21 drives the support 23 and the support plate 30 fixed on it to move smoothly upward in the vertical direction. Finally, the support plate 30 is tightly pressed against the lower surface of the microporous plate 40 above. At this time, the cleaning fluid is injected into each micropore of the microporous plate 40 through the fixed infusion lines 41. After cleaning is completed, the waste liquid drips from the microporous plate 40 down to the support plate 30. Then the motor 26 reverses and drives the support plate 30 to descend and reset.

[0025] More preferably, the drive mechanism 20 further includes a limiting plate 24 and a limiting rod 25.

[0026] The limiting plates 24 are located at both ends of the lead screw 22, and the lead screw 22 is rotatably connected to the limiting plates 24. The limiting rod 25 passes through the push block 21 and is fixedly connected between the two limiting plates 24.

[0027] Two limiting plates 24 serve as the core support frame of the entire transmission system. They are fixed to the base 10 in a parallel configuration and located at both ends of the lead screw 22 along its axial direction. Specifically, each end of the lead screw 22 is rotatably connected to the corresponding limiting plate 24 via a set of rolling or sliding bearings. This means that the limiting plates 24 not only firmly support the entire weight and transmission load of the lead screw 22, but also ensure that the lead screw 22 can rotate smoothly and accurately around its own axis without axial movement, thus providing a stable and reliable rotational reference for the entire lifting motion. To accurately convert the rotational motion of the lead screw 22 into the linear motion of the push block 21 and constrain its degree of freedom, two limiting rods 25 are provided in the drive mechanism 20. They are parallel to the lead screw 22 and symmetrically arranged on both sides of the lead screw 22. The two ends of each limiting rod 25 are tightly fixed between the two limiting plates 24, thus forming a rigid three-dimensional frame together with the limiting plates 24. The push block 21 is machined with smooth guide holes corresponding to the number and position of the limiting rods 25. The limiting rods 25 pass directly through these guide holes, thus constraining the push block 21. When the lead screw 22 rotates under the drive of the motor 26, due to the constraint of the limiting rods 25, the push block 21 cannot rotate with the lead screw 22, but is forced to make a precise linear movement along the vertical direction determined by the limiting rods 25.

[0028] More preferably, the limiting plate 24 limits the sliding of the push block 21 on the lead screw 22 in the first direction F1, and the limiting rod 25 limits the push block 21 in the horizontal direction.

[0029] The two limiting plates 24 serve as end supports for the entire transmission system, and one of their core functions is to limit the sliding stroke of the push block 21 in the vertical direction. Driven by the rotating lead screw 22, the push block 21 tends to move along the axis of the lead screw 22. The two limiting plates 24 are fixedly installed at the upper and lower ends of the lead screw 22, respectively, with their inner surfaces directly facing the push block 21. When the push block 21 slides up or down on the lead screw 22, its extreme position is blocked by the inner surfaces of the two limiting plates 24. Specifically, when the push block 21 rises to contact the inner surface of the upper limiting plate 24, the upward movement is forcibly terminated; similarly, when the push block 21 descends to contact the inner surface of the lower limiting plate 24, the downward movement is forcibly terminated. This design defines the safe travel range for the lifting and lowering of the pallet 30, effectively preventing overtravel of the push block 21 due to control system malfunction or sensor failure. This mechanical limit greatly improves the safety of the equipment, avoiding potential risks such as the pallet 30 rising excessively and hitting the micro-perforated plate 40, or falling out of the effective engagement zone of the screw 22 due to excessive descent, thus ensuring the long-term safe operation of the equipment.

[0030] More preferably, the support device 100 further includes a support plate 50.

[0031] The support plate 50 is fixedly connected to the base 10 and is located on the side of the base 10 where the drive mechanism 20 is located. The surface of the support plate 50 is perpendicular to the surface of the base 10.

[0032] The lower edge of the support plate 50 is rigidly fixed to the upper surface of the base 10 by welding or using high-strength bolts. Its installation position is located in the area extending from the bracket 23 of the base 10 where the drive mechanism 20 is mounted, close to the edge of the base 10, thus avoiding motion interference with the drive mechanism 20 located in the middle of the base 10. The support plate 50 is configured to be perpendicular to the surface of the base 10, i.e., it stands vertically on the base 10.

[0033] More preferably, the support device 100 further includes a fixing plate 60.

[0034] The fixing plate 60 is fixedly connected to the support plate 50 and is located on the side of the support plate 50 opposite to the base 10. The fixing plate 60 is parallel to the surface of the base 10.

[0035] To ultimately support and fix the microporous plate 40, the support device 100 has a fixing plate 60 at the upper end of the support plate 50. The fixing plate 60 is fixedly connected to the top of the support plate 50 by bolts, and its surface is parallel to the surface of the base 10. The microporous plate 40 is fixed to the underside of the fixing plate 60 facing the tray 30 by welding. This design ensures that during the cleaning process, the microporous plate 40 itself and all the infusion lines 41 connected to it remain stationary, fundamentally solving the wear and reliability problems caused by the movement of the lines. Since the fixing plate 60 is parallel to the surface of the base 10, and the trajectory of the tray 30 driven by the drive mechanism 20 is perpendicular to the surface of the base 10, this ensures that the surface of the rising tray 30 can achieve full-area, uniform, and tight pressing with the lower surface of the microporous plate 40 on the fixing plate 60.

[0036] More preferably, the microporous plate 40 is fixedly connected to the fixing plate 60 and is located between the fixing plate 60 and the support plate 30.

[0037] The microporous plate 40, serving as a component in the cleaning operation, is securely welded to the lower surface of the fixed plate 60. The perforated surface of the microporous plate 40 is parallel to and directly opposite the upper surface of the support plate 30 below. Rigidly fixing the microporous plate 40 to the fixed plate 60 ensures its complete stillness during operation. This eliminates the need for all connected infusion tubing 41, sensor cables, etc., to move with the moving parts, fundamentally eliminating the risks of fatigue fracture, loose joints, and media leakage caused by repeated bending of pipelines, significantly improving the long-term reliability and service life of the system.

[0038] More preferably, the surface of the microporous plate 40 is parallel to the surface of the support plate 30.

[0039] When the support plate 30 rises and presses against the microporous plate 40, the parallel surfaces ensure that the contact pressure is evenly distributed throughout the contact area. This effectively avoids excessively high or low local pressure caused by the presence of an angle. Excessive pressure may damage the plate or sealing elements, while insufficient pressure can lead to poor local sealing, causing liquid leakage or cross-contamination. Therefore, the parallel relationship between the microporous plate 40 and the support plate 30 is a prerequisite for forming a reliable and consistent seal.

[0040] More preferably, the support device 100 further includes a solenoid valve 70.

[0041] The solenoid valve 70 is fixedly connected to the base 10 and is located on the side of the base 10 where the drive mechanism 20 is located. The solenoid valve 70 is connected to the infusion line 41 and drives the infusion line 41 to deliver cleaning fluid to the microporous plate 40.

[0042] The inlet of the solenoid valve 70 is connected to an external cleaning fluid storage bottle via a pipe, while its outlet is directly connected to the infusion line 41 leading to the microporous plate 40. As the core control unit of the infusion line 41 system, the solenoid valve 70 receives electrical signal commands from the control system. As an electrically controlled actuator, the solenoid valve 70 can accurately open or close the fluid circuit according to a preset cleaning program. Fixing the solenoid valve 70 to the base 10 ensures that all connected inlet and outlet pipes are in a fixed state, eliminating the need for movement with any moving parts. This static layout completely avoids fatigue aging caused by repeated bending of the pipes, greatly improving the reliability of the fluid circuit system.

[0043] More preferably, the drive mechanism 20 further includes a motor 26.

[0044] The motor 26 is fixedly connected to the base 10 and is located on the side of the lead screw 22 away from the support plate 30. The output shaft of the motor 26 drives the lead screw 22 to rotate.

[0045] The motor 26 is securely fixed to the upper surface of the base 10 via a motor mount. The output shaft of the motor 26 is located at the end of the lead screw 22 axially close to the base 10. The output shaft of the motor 26 is coaxially connected to the end of the lead screw 22 via a rigid coupling and a combination of gears and chains. This ensures a smooth power input to the drive system, providing a power foundation for the smooth lifting and lowering of the pallet 30.

[0046] More preferably, the support device 100 further includes a circuit board 80.

[0047] The circuit board 80 is fixedly connected to the fixing plate 60 and is located on the side of the fixing plate 60 opposite to the support plate 50. Electronic components are integrated on the circuit board 80 to control the operation of the support device 100.

[0048] The support device 100 integrates a dedicated circuit board 80. This circuit board 80 is fixed to the upper surface of the fixing plate 60 with screws. This circuit board 80 integrates core electronic components such as a microprocessor, power management chip, and drive circuitry. The circuit board 80 establishes an electrical connection with the motor 26 and solenoid valve 70 below via a signal module, forming a complete control system.

[0049] In this way, the drive mechanism 20 drives the support plate 30 to move upward along the first direction F1 towards the microporous plate 40, so that the microporous plate 40 does not need to move, thus avoiding the need for the infusion tubing 41 connected to the microporous plate 40 to move as well, and preventing the infusion tubing 41 from frequently rising and falling with the microporous plate 40. Furthermore, the lead screw 22 drives the push block 21 to move the bracket 23 connected to the push block 21 and the microporous plate 40 on the bracket 23. This allows the drive mechanism 20 to be powered off at a set time, and the thread of the lead screw 22 can also limit the push block 21 in the first direction F1, preventing the push block 21 from falling due to gravity and preventing gaps between the microporous plate 40 and the support plate 30.

[0050] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A support device for lifting plate frame of a plate washing machine, characterized in that, The support device includes: Base A drive mechanism is fixedly connected to the base. The drive mechanism includes a push block, a lead screw that passes through the push block and is threadedly connected to the push block, and a bracket fixedly connected to the push block. The tray is fixedly connected to the bracket and is located on the side of the bracket away from the base; A microporous plate is located on the side of the support plate away from the bracket, and the microporous plate is connected to several infusion lines; The drive mechanism drives the lead screw to rotate, the push block moves along the lead screw in a first direction, the tray moves away from the base and presses against the microporous plate, and the cleaning fluid enters the microporous plate through the infusion line and drips from the microporous plate onto the tray.

2. The plate washing machine lifting frame support device according to claim 1, characterized in that, The drive mechanism also includes: A limiting plate is located at both ends of the lead screw, and the lead screw is rotatably connected to the limiting plate; The limiting rod passes through the push block and is fixedly connected between the two limiting plates.

3. The plate washing machine lifting frame support device according to claim 2, characterized in that, The limiting plate limits the sliding of the push block on the lead screw in the first direction, and the limiting rod limits the push block in the horizontal direction.

4. The plate washing machine lifting frame support device according to claim 1, characterized in that, The support device also includes: A support plate is fixedly connected to the base and is located on the side of the base where the drive mechanism is located; The surface of the support plate is perpendicular to the surface of the base.

5. The plate washing machine lifting frame support device according to claim 4, characterized in that, The support device also includes: A fixing plate is fixedly connected to the support plate and is located on the side of the support plate opposite to the base; The fixing plate is parallel to the surface of the base.

6. The plate washing machine lifting frame support device according to claim 5, characterized in that, The microporous plate is fixedly connected to the fixing plate and is located between the fixing plate and the support plate.

7. A plate washing machine lifting frame support device according to claim 6, characterized in that, The surface of the microporous plate is parallel to the surface of the support plate.

8. The plate washing machine lifting frame support device according to claim 1, characterized in that, The support device also includes: A solenoid valve is fixedly connected to the base and located on the side of the base where the drive mechanism is located; The solenoid valve is connected to the infusion line and drives the infusion line to deliver cleaning fluid to the microporous plate.

9. A plate washing machine lifting frame support device according to claim 1, characterized in that, The drive mechanism also includes: The motor is fixedly connected to the base and is located on the side of the lead screw away from the support plate; The output shaft of the motor is connected to the lead screw to drive the lead screw to rotate.

10. A plate washing machine lifting frame support device according to claim 5, characterized in that, The support device also includes: The circuit board is fixedly connected to the fixing plate and is located on the side of the fixing plate opposite to the support plate; The circuit board integrates electronic components to control the operation of the support device.

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