555 results about "Liquid transfer" patented technology

The present disclosure relates to systems, devices, and methods for spinoculation and counterflow centrifugal elutriation. In an embodiment, the present disclosure relates to a cartridge in an automated system, comprising a liquid transfer bus, a module fluidically coupled to the liquid transfer bus, the module comprising two sub-modules, each configured to perform separate cell processing steps, and at least one selector valve configured to direct fluid to at least one of the sub-modules.

The invention belongs to the field of on-board equipment, and discloses a ship shake resisting device which comprises a main water tank, a water storage tank, a water pump assembly, a liquid level detection assembly and a control system. The main water tank is installed in a ship body, the water storage tank is installed in the ship body and located on one side of the main water tank, and the water pump assembly is arranged between the main water tank and the water storage tank; according to the scheme, through the configuration of the main water tank and the water storage tank and the combination of a plurality of bidirectional water pumps, a liquid level detection system and a control system, rapid and accurate liquid level adjustment is achieved, the ship stabilization effect is improved, the plurality of water pumps can accelerate liquid transfer, it is ensured that the sea condition change is rapidly responded, and the stability is optimized; the seawater limitation is effectively avoided, the service life of the main water tank and the service life of the water storage tank are prolonged, different loads can be adapted by adjusting the water volume of the water storage tank in advance, the flexibility of a ship is improved, the stability of liquid in the water storage tank is ensured through the baffle, and shaking is avoided from interfering with the stabilization effect.

The invention relates to a microfluidic nucleic acid detection device, and relates to the field of detection. Comprising a bottom plate, a chip inlet and outlet module erected on one side above the bottom plate, a chip table erected on the chip inlet and outlet module and used for bearing a micro-fluidic chip with a liquid bag, a displacement module erected above the chip table, and a crushing module erected on the displacement module and used for squeezing liquid in the liquid bag into the micro-fluidic chip, the liquid transferring module is erected on one side of the crushing module and is used for transferring liquid in the micro-fluidic chip to flow; the pneumatic module is erected above the front end of the bottom plate and is used for controlling a flow channel of the micro-fluidic chip to be opened and closed; the heating module is erected on the other side above the bottom plate and is used for locally heating the micro-fluidic chip and automatically detecting the temperature; and the fluorescent module is used for acquiring a fluorescent signal of the micro-fluidic chip. The micro-fluidic chip detection device has the advantages that different types of micro-fluidic chips can be rapidly detected, and an accurate result can be obtained.

The invention relates to the technical field of biological sample detection equipment, and discloses a biological sample detection card box and a biological sample detection method. The biological sample detection card box comprises a box body assembly, a pipetting suction head and a plunger assembly, wherein the pipetting suction head and the plunger assembly are arranged on the box body assembly; the box body assembly comprises a bottom box, a packaging film, a detection box and an upper box rotationally matched with the bottom box, a sample storage area, a liquid storage area and a detection area are arranged at the end, close to the upper box, of the bottom box, a plurality of detection holes corresponding to the detection area are formed in the end, away from the upper box, of the bottom box, the packaging film seals the liquid storage area, and the detection box is arranged on the bottom box and corresponds to the detection area; the detection box is used for arranging at least two detection tubes for storing detection reagents, and the upper box is provided with a sample adding hole; the pipetting suction head is used for sucking and transferring liquid; the plunger assembly is used for sealing the detection pipe. The biological sample detection card box solves the problem of single detection index in the prior art, so that the practicability is high, and meanwhile, the detection efficiency and precision are improved.

The present disclosure relates to systems and methods for monitoring pressure during automated cell processing. An illustrative method for monitoring pressure within a fluid device of an automated cell processing system includes coupling a fluid device having an air vent to a cell processing instrument. Next, the method includes transferring liquid between the fluid device and the instrument, determining a liquid transfer rate between the fluid device and instrument and an airflow rate through the air vent of the fluid device, and estimating an internal pressure of the fluid device based on the airflow rate and the liquid transfer rate. The fluid device may be a liquid transfer device, the instrument may be a liquid transfer instrument, and the system may facilitate liquid transfer between the liquid transfer device and a cell processing cartridge via the liquid transfer instrument.

The utility model discloses a sample treatment and detection integrated device, and belongs to the field of medical examination and inspection instruments and molecular diagnosis and detection instruments. According to the technical key points, the system comprises a system outer cover assembly, a loading round chassis assembly and a rotary liquid transfer device assembly, the object-carrying circular chassis assembly comprises an object-carrying circular chassis; a waste liquid bin, a magnetic bead lysis solution bin, a reagent tube, a PCR tube and a washing liquid bin are uniformly arranged on the loading round chassis; an insertion cylinder is further arranged in the middle of the loading round base plate; the rotary liquid transfer device assembly comprises a rotary liquid transfer device; the offset pipette comprises an upper through pipe interface, a lower pipe interface and an offset pipe; the lower portion of the first vertical through pipe is connected with the upper through pipe connector, and the upper portion of the second vertical pipe is connected with the lower through pipe connector. The first vertical through pipe and the second vertical pipe are located on the same vertical axis, and the first vertical through pipe is communicated with the offset pipe.

In some aspects thereof, the present invention discloses automated filtration systems integrating machine vision for monitoring and control. The system apparatus employs cameras to capture continuous images of interconnected fluid containers, tubes, and filtration devices, these visuals are processed through neural network models tailored for mapping critical parameters such as fluid liquid level, volume, turbidity, color, and leak detection. This multidimensional perception enables real-time control and regulation of the system components, such as pumps and valves, establishing a closed-loop system for the precise control of pressures, flow rates, and liquid transfers essential for efficient operational cycles. Configurable analytics, automated diagnostics, and data offloading enhance process ruggedization, minimizing manual intervention.

The utility model provides an electronic atomization device, a power supply main body for the electronic atomization device and an atomization main body. The electronic atomization device comprises a front side and a rear side which are opposite in the thickness direction. A first liquid storage cavity; the atomizing assembly is used for receiving the liquid matrix in the first liquid storage cavity and atomizing the liquid matrix to generate aerosol; the second liquid storage cavity is used for supplementing the liquid matrix to the first liquid storage cavity; the second liquid storage cavity and the first liquid storage cavity are arranged at intervals in the longitudinal direction; the first liquid transfer channel and the second liquid transfer channel are arranged at intervals in the thickness direction; the distance between the first liquid transfer channel and the front side is larger than the distance between the second liquid transfer channel and the rear side, and the distance between the second liquid transfer channel and the front side is larger than the distance between the second liquid transfer channel and the front side. According to the electronic atomization device, when one of the first liquid delivery channel and the second liquid delivery channel delivers the liquid matrix from the second liquid storage cavity to the first liquid storage cavity, the other one can be used for air exchange to balance the pressure between the first liquid delivery channel and the second liquid delivery channel.

The utility model provides a sample treatment and detection device provided with a liquid transfer structure, which comprises an upper cover, a lower cover, a liquid transfer structure and a liquid transfer structure, a hollow containing space is formed by the base plate and the upper cover, a plurality of liquid containing spaces are formed in the base plate, a center shaft containing hole is formed in the center of the base plate, and a center shaft is detachably connected into the center shaft containing hole; the upper portion of the liquid transfer assembly penetrates through the center hole to be connected with the power device, and the liquid transfer assembly is driven by the power device to move in the vertical direction with the center shaft as the axis and / or rotate around the axis; the lower portion of the liquid transfer assembly is connected with a liquid suction head, and the liquid suction head is driven by a power device to achieve liquid transfer among different liquid containing spaces.

According to the clamping box structure and the nucleic acid extraction clamping box, a clamping box main body is matched with a mounting cavity, an extraction cavity, a buffer cavity, a waste liquid collection cavity, a liquid transfer channel, an eluent input port, a cleaning liquid input port, a combination liquid input port, a lysis solution input port, an extraction pipe interface, a collection pipe interface, a first plunger interface and a second plunger interface; the full-sealing design is achieved, and external pollution is prevented; automatic operation of the clamping box in the nucleic acid extraction instrument is facilitated, complete integration of kit preloading and extraction is realized in the automatic operation process of the clamping box, and the purity and the product concentration of a nucleic acid extraction product are improved; a universal magnetic bead method and a silica gel membrane method are compatible, extracted products can be independently stored, additional liquid transfer operation is not needed, and therefore the method is suitable for various downstream molecular biology experiments; by matching with a plunger structure, air pump equipment such as a vacuum pump does not need to be adopted in the nucleic acid extraction instrument, so that the risk of cross contamination between the interior of the instrument and the interior of the clamping box structure is reduced.

The utility model relates to filtering equipment for lithium carbonate production, which comprises a mixing filter (1), a purifying filter (2) and a liquid transfer pump, a liquid outlet is arranged at the bottom of a tank body (11), and a mixing cavity is formed inside the tank body. The first filter plate is arranged at the upper part of the mixing cavity; the stirring device is used for stirring a mixed solution in the tank body. A water inlet (211) is formed in the top of the box body (21), a filtering cavity is formed in the box body (21), the second filtering plate is arranged on the upper portion of the filtering cavity, the third filtering plate is arranged in the filtering cavity and located below the second filtering plate, and the hole diameters of filtering holes of the first filtering plate, the second filtering plate and the third filtering plate are sequentially decreased. And an inlet and an outlet of the pipetting pump are respectively communicated with the liquid outlet and the water inlet (211). The filtering holes in the filtering plate can be prevented from being blocked, so that the filtering efficiency and the filtering effect are improved.

The present application relates to the technical field of strain fermentation, and particularly relates to a multi-strain fermentation equipment and a fermentation process thereof, which comprises a mixing mechanism, the mixing mechanism comprises a chassis, a cleaning mechanism for cleaning raw materials and a material distribution mechanism for putting the raw materials into the mixing mechanism are arranged on the mixing mechanism; the present application realizes full-process automatic operation of multi-strain fermentation by integrating the functions of cleaning, crushing, sub-packaging, additive distribution and mixed liquid transfer, the cleaning mechanism adopts a spiral lifting type cleaning disc combined with a crushing design of a pressing disc, so that the cleaning and crushing of the raw materials can be completed in the same equipment, the process conversion time is greatly reduced, and the production efficiency is improved; the present application can automatically distribute the cleaned and crushed raw materials to different fermentation cylinders in equal amounts and accurately add fermentation aids suitable for different strains by arranging the material distribution mechanism and a double-cavity additive box, the opening and closing of the feeding gap are controlled by an output electric cylinder, so that the quantitative addition of the additives is ensured, and the stability and consistency of the fermentation products are improved.

A split-able funnel device designed for efficient liquid transfer and easy cleaning. The funnel features a conical body that tapers from a wide opening to a narrow stem, allowing precise pouring into small containers. The innovative design includes a longitudinal split, enabling the funnel to open fully for thorough cleaning and convenient storage. The device incorporates a snap-fit or hinged splitting mechanism for secure assembly and easy separation. Additionally, the funnel body includes measurement markings for accurate liquid transfer and a filter mechanism for separating solids from liquids. Constructed from durable, flexible materials, the lightweight funnel is stackable and available in various sizes and colors, making it suitable for diverse applications. This split-able funnel device minimizes spillage and waste, providing a user-friendly solution for clean and efficient liquid transfer.

The present disclosure generally relates to an absorbent pad (100) for a garment (200) and a garment (200) including the absorbent pad (100). The absorbent pad (100) includes a liquid-impermeable barrier layer (120), a functional assembly (110) attached thereto, and a peripheral assembly (130) attached to the periphery of the functional assembly (110), and is at least partially liquid-impermeable. The functional assembly (110) includes an absorbent layer (112) for absorbing liquid, the absorbent layer (112) attached to the barrier layer (120), and a wicking layer (114) for transferring liquid to the absorbent layer (112), the wicking layer (114) attached to the absorbent layer (112) and positioned to face the skin of a user in use. The wicking layer (114) and absorbent layer (112) are attached at discrete points (116) therebetween to facilitate liquid transport from the wicking layer (114) to the absorbent layer (112) around the periphery of the discrete points (116).

The invention provides a liquid level detection method based on air pressure detection, which is applied to a pipetting system, and the pipetting system comprises a suction head; the liquid level detection method comprises the steps that the whole pipetting system is driven to move towards a target container in the first direction, the suction head is driven to suck air in the second direction at the preset speed, and the preset speed is smaller than or equal to 0.6-3 uL / s; detecting real-time air pressure; whether a suction head makes contact with liquid in the target container or not is judged according to the real-time air pressure, and when the suction head makes contact with the liquid, the liquid level position of the liquid is recorded, and the suction head is controlled to stop sucking air. The liquid level detection method based on air pressure detection is beneficial to shortening the pipetting time and improving the pipetting accuracy. The invention further provides a pipetting method and system based on air pressure detection and a computer readable storage medium.

Disclosed in the present invention is a bench-scale device for an ozone catalytic system, the bench-scale device comprising: a catalysis unit, a liquid transfer unit, and a gas treatment unit, wherein a catalytic reaction can occur inside the catalysis unit, the liquid transfer unit is communicated with two sides of the catalysis unit, and the gas treatment unit is communicated with a top end and a bottom end of the catalysis unit. The catalysis unit comprises: a housing, wherein the interior of the housing is provided with a cavity for the catalytic reaction, and a top end of the housing is provided with an opening for the cleaning and maintenance of the catalysis unit; a cover plate placed at the top end of the housing for sealing the opening; and a supporting tray used for supporting a catalysis layer. The supporting tray comprises a first support plate and a mesh screen, wherein the first support plate is fixed at one third to one half of the height of the housing, is fixed on the inner wall of the housing in parallel to the bottom surface of the housing, and has the same size as the bottom surface of the housing; the surface of the first support plate is provided with a plurality of first flow-through holes; and the mesh screen is arranged on the upper surface of the first support plate.

The utility model provides a cleaning fluid recovery device of a vacuum three-in-one dryer, which relates to the field of vacuum three-in-one dryers and comprises a tank component, a transmission component is arranged on one side of the tank component, and a fluid collection component is arranged at the bottom of the transmission component. Through cooperation of the first electromagnetic valve and the fourth electromagnetic valve, circulation of the liquid discharging pipe and the liquid conveying pipe can be controlled, so that the flowing track of cleaning liquid is limited, the cleaning liquid is recycled from the main tank to the recycling box, waste of the cleaning liquid is reduced, and the utilization rate of resources is increased; a magnetic filter screen and an ultrafiltration screen arranged in the recycling box can perform double filtration on the recycled cleaning liquid, impurities and particles in the cleaning liquid are removed, the purity and the reuse quality of the cleaning liquid are guaranteed, the recycled cleaning liquid can be well conveyed into a liquid injection pipe and a cleaning ball again through a conveying assembly, and the cleaning efficiency is improved. And the main tank is convenient to clean, cyclic utilization is realized, and the use cost is greatly reduced.

The application belongs to the field of liquid transfer, specifically to a liquid transfer device, which includes: a liquid path mechanism, including a conduit assembly and a driving member for driving liquid to flow in the conduit assembly; a housing assembly, including a bottom plate and a housing with an accommodating space, both the conduit assembly and driving member are installed on the housing; a support frame, including a rotating self-locking structure and a telescopic structure; the telescopic structure is installed on the bottom plate through the rotating self-locking structure; the rotating self-locking structure is used for driving the telescopic structure to rotate relative to the bottom plate within a preset angle range, and locking the telescopic structure to stop rotating once it reaches a preset position; and an electrical assembly, including a control assembly installed in the accommodating space, and the control assembly is connected with the driving member.

The utility model provides a strong adaptability's liquid medicine transfer bottle lid relates to traditional chinese medicine liquid transfer bottle lid technical field, the utility model discloses a transfer bottle lid body is established, the one side of transfer bottle lid body is established with the installation slot, the inner wall of installation slot is equipped with the flow guide pipe and is connected, the inner wall fixed connection of installation slot has the sealing rubber block, the inner wall of installation slot is provided with the adjusting device unison, the outer surface of flow guide pipe is provided with the limit auxiliary device, the adjusting device includes the slide rod, the inner wall of installation slot is established with the rectangular hole unison, the inner wall of rectangular hole and the outer surface of one end slide rod are connected, the utility model discloses the position of adjusting device in the slide rod position adjustment, can make transfer bottle lid body install on the transfer bottle of different diameter size, improve the use adaptability of transfer bottle lid body, after installing it, the transfer bottle is inclined, can pour the traditional chinese medicine liquid collected in the inside into the check bottle through the flow guide pipe, is convenient for its transfer.

The present invention provides an automatic stop device that simplifies the structure, improves the responsiveness and reliability of stopping fluid delivery, and enables rapid stopping of fluid delivery in emergencies, as well as a siphon-type fluid delivery pump equipped with this automatic stop device. [Solution] The device includes a float 212 that detects the liquid level in the container to which the liquid is being delivered, and a storage section 213 that houses the float and holds air. A communication hole 214 is opened at the top of the storage section, and the held air is sent to the discharge valve 14 of the pump 1 via an air inlet tube 215. A slide valve 211 that operates in response to the float rising connects the top of the storage section and the air inlet tube via the communication hole when the float rises to a predetermined position. As a result, the discharge valve is closed by the released air, the liquid flow in the discharge hose 15 is restricted, and the liquid delivery of the siphon-type liquid delivery pump is stopped. This provides an automatic stop device 2 and a siphon-type liquid delivery pump having an automatic stop device.

The utility model discloses a multifunctional transfer device and a workstation, and relates to the technical field of molecular diagnosis. The multifunctional transfer device comprises a mounting frame, a liquid transfer part and a clamping transfer part. Wherein the liquid transferring component comprises a liquid transferring power assembly movably arranged on the mounting frame, and the liquid transferring component can move in the first linear direction through the liquid transferring power assembly to generate a liquid suction force or a liquid repelling force; the clamping transfer part comprises a plurality of clamping hands and a clamping hand driving motor, and the clamping hands are rotatably arranged on the mounting frame and are in transmission connection with the clamping hand driving motor; the liquid transfer part and the clamping hand driving motor are arranged side by side in the second linear direction perpendicular to the first linear direction; the liquid transfer part is arranged between the at least two clamping hands in a third linear direction perpendicular to the first linear direction. Therefore, the device has the advantages that the overall structure is compact, and the application range is wide.

The utility model discloses a semi-automatic spotting instrument pipetting device for Xuesaitong capsule production, and particularly relates to the field of semi-automatic spotting instruments, the semi-automatic spotting instrument pipetting device comprises a pipetting gun, the pipetting gun comprises a gun barrel, a half rod and an opening and closing rod, a sealing plate is connected in the gun barrel in a sealed and sliding manner, the sealing plate is fixed with the half rod, one end of the gun barrel deviating from the half rod extends outwards to form a gun nozzle, and the opening and closing rod is fixed on the gun nozzle. The opening and closing rods are radially distributed outwards by taking the circle center of the section of the half rod as the center, are hinged to the half rod, and can move in the cavity of the gun barrel after being closed; the pipetting platform is installed on the machine body of the semi-automatic spotting instrument, the gun barrel is detachably connected to the pipetting platform, the length of the push rod on the axis of the gun barrel is reduced by dividing the push rod into two parts, namely the half rod and the opening and closing rod, and the opening and closing rod has the expandable characteristic, and the opening and closing rod does not hinder a user from pulling the half rod when being expanded, so that the user can conveniently use the semi-automatic spotting instrument. And the hand shaking degree when the user sucks the liquid medicine is reduced.

The utility model discloses a multi-stage dehydration device for stem cell vitrification cryopreservation, which comprises a base, the top of the base is provided with a containing groove, the containing groove is internally provided with a storage pipe for storing stem cell suspension and a [-shaped frame, the top of the [-shaped frame is provided with a lifting assembly, and the lifting assembly is provided with a water inlet and a water outlet. The movable end of the lifting assembly is fixedly provided with an injection pipe, the outer wall of the injection pipe is fixedly communicated with a peristaltic pump through a pipeline, through linkage control of the lifting assembly and the peristaltic pump, automatic conveying of a dehydrating agent and accurate lifting of the injection pipe are achieved, manual pipetting or container replacement is not needed, the operation efficiency is remarkably improved, and the labor intensity of workers is reduced. The quick plugging design of the quick-plugging male connector and the quick-plugging female connector supports switching of multiple groups of dehydrating agent storage tanks as required, ensures continuous gradient progression of dehydrating agents with different concentrations, realizes gradual dehydration of stem cell suspension in a gradient concentration environment, realizes smooth transition of the concentration of the dehydrating agent, and is beneficial to further improvement of the survival rate of stem cells.

To provide a storage tank facility for low temperature liquefied gas in which backflow of gas does not occur in an economizer line.SOLUTION: A cryogenic liquefied gas storage facility includes a tank that stores cryogenic liquefied gas, a liquid feeding line that feeds the cryogenic liquefied gas from the tank, an economizer line that includes a first end communicating with an upper space in the tank at a first position, a second end connected to the liquid feeding line, and a first valve and feeds gas in the tank to the liquid feeding line by an opening operation of the first valve, and a discharge line that includes a first end communicating with the upper space in the tank at a second position different from the first position and a second valve and discharges the gas in the tank to the atmosphere by an opening operation of the second valve.SELECTED DRAWING: Figure 3

The utility model discloses a biological sample liquid multi-tip pipetting device, which belongs to the technical field of biological sample liquid detection and comprises a base, a support is fixedly connected to one side of the top of the base, a master control box is fixedly connected to one side of the top of the support, a pipetting mechanism is arranged at the bottom of the master control box, and a plurality of pipettes are arranged at the bottom of the pipetting mechanism. A state display screen is arranged on one side of the main control box, a movable seat is connected to the base in a sliding mode, a top table is fixedly connected to one side of the movable seat, a bottom table is arranged in the middle of the base, and positioning blocks are arranged on the top table and the base. And through the arrangement of the transmission shaft, the top table can be controlled to move towards one side, and meanwhile, the bottom table can be controlled to rise, so that better sample liquid transfer can be realized without moving the pipette for a large distance, and the use effect of the pipetting device can be improved.

The invention discloses a chemical bottle cleaning device and a chemical bottle cleaning process. The chemical bottle cleaning process comprises the following steps: (1) placing chemical bottles: placing at least two chemical bottles to be cleaned on cleaning positions corresponding to a cleaning mechanism; (2) adding liquid: feeding the prepared cleaning liquid into a chemical bottle to be cleaned, and cleaning the chemical bottle by using a cleaning mechanism; (3) pipetting: after one chemical bottle is cleaned for one time, pumping out the cleaning liquid in the chemical bottle, and feeding the chemical bottle into the next chemical bottle to be cleaned for cleaning; (4) discharging liquid: after the cleaning liquid enters the last to-be-cleaned chemical bottle and cleaning is completed; or after the time when the cleaning liquid in the chemical bottle is in the corresponding chemical bottle is up and the pipetting operation does not need to be carried out, the cleaning liquid in the chemical bottle is extracted and discharged. The cleaning efficiency is improved, and the cleaning cost is reduced.

1. The name of this design product: Automated liquid extraction workstation. 2. The use of this design product: This design product is used for automated quantitative liquid extraction. 3. The design key points of this design product: lie in the shape. 4. The picture or photograph that best shows the design key points: the perspective view.

The embodiment of the utility model provides a continuous liquid adding device for electrostatic spinning and an electrostatic spinning machine, and relates to the field of electrostatic spinning. The continuous liquid adding device for electrostatic spinning comprises a liquid adding hopper, a liquid conveying pipe and a liquid conveying driving part, the liquid adding hopper is provided with a liquid storage cavity and a liquid adding opening, the liquid adding opening is communicated with the liquid storage cavity, one end of the liquid conveying pipe is communicated with the liquid storage cavity, and the other end of the liquid conveying pipe is communicated with a spinning injector. When an electrostatic spinning solution needs to be added into the spinning injector, the electrostatic spinning solution can be injected into the solution adding hopper, and the electrostatic spinning solution in the solution conveying pipe is driven by the solution conveying driving part to flow to the spinning injector and is extruded out of a needle of the spinning injector, so that continuous spinning work is carried out, and the spinning work efficiency is improved. The embodiment of the utility model further provides an electrostatic spinning machine. The electrostatic spinning machine comprises the continuous liquid adding device for electrostatic spinning.

The utility model discloses a linear motion control all-in-one machine, and relates to the technical field of all-in-one machines. The automatic pipetting device comprises a working table, a supporting plate is fixedly connected to the top of the working table, a pipetting mechanism is arranged at the top of the working table, a motor, a pipetting bin, a liquid storage pipe and other components of the pipetting mechanism are matched with one another, medical staff firstly place articles needing pipetting in a fixing groove, and then the articles need pipetting; the liquid transferring mechanism is prevented from moving during working, then a motor is started to enable the liquid transferring bin to do reciprocating linear motion through the motion trail in the displacement frame, when the liquid transferring bin moves to the leftmost end of the displacement frame, a suction head at the bottom of the liquid transferring bin moves and fixes the interior of an object to suck liquid, and when the liquid transferring bin moves to the rightmost end of the displacement frame, the suction head moves and fixes the interior of the object. The suction heads of the pipetting bin move downwards to the top of the liquid storage pipe to discharge liquid, so that the effect of multiple times of pipetting is achieved through reciprocating motion, the working efficiency is improved through the multiple suction heads, and the labor force of manual pipetting is reduced.

The invention relates to the technical field of photovoltaic assemblies, in particular to a photovoltaic frame connecting piece which comprises two positioning assemblies and a connecting assembly, each positioning assembly comprises a two-way telescopic assembly, and the top of each two-way telescopic assembly is fixedly connected with a top plate. The side, away from the center of the connecting assembly, of the top of the top plate is fixedly connected with a limiting and fixing column, and the bottom of the bidirectional telescopic assembly is fixedly connected with a bottom plate. According to the invention, through the arrangement of the liquid guide groove, the liquid discharge groove, the liquid passing groove and the liquid outlet groove and the arrangement of the liquid transfer assembly, liquid entering the photovoltaic frame can be guided to the liquid discharge groove by the liquid guide groove while the photovoltaic frame is connected by the limiting and fixing column and the connecting column, and then the liquid is guided to the liquid transfer pipe included in the liquid transfer assembly by the liquid passing groove; and then the liquid is gathered to the liquid passing plate through the liquid transfer pipe, and then the liquid is guided and moved through the liquid guide plate, so that the liquid is uniformly discharged out of the photovoltaic frame through the liquid outlet groove, and the corrosion resistance of the photovoltaic frame can be further improved.