Multi-channel liquid transfer machine

Abstract

The utility model relates to a multi-channel liquid transfer machine which comprises a bottom plate, a feeding device, a discharging device, a transfer device and a baffle device. A feeding device and a discharging device are arranged on the bottom plate. A pick-and-place station is formed at the front part of the bottom plate; a transfer device is arranged in the middle of the bottom plate, and a transfer cleaning station is arranged below the transfer device; the front part of the feeding device is provided with a placing groove for a to-be-transferred pore plate, and the rear part is provided with a cleaning water tank; the front part of the blanking device is provided with a placing groove for a to-be-received pore plate, and the rear part is provided with a cleaning water tank; a baffle device is arranged on the rear portion of the bottom plate, and a baffle is arranged in the baffle device. According to the multi-channel liquid transfer machine disclosed by the utility model, one-time multi-channel liquid transfer is realized by utilizing compressed air, the transfer efficiency is high, and the liquid transfer needles are in one-to-one correspondence, so that the transfer of liquids of different types and different concentrations can be realized; the equipment is high in automation degree, can replace a large amount of manual repeated operation, and is low in efficiency and long in time consumption.

Description

Technical Field

[0001] The utility model relates to a liquid transfer machine, in particular to a liquid transfer machine adopting a multi-channel design. Background Art

[0002] In the field of life sciences, liquid transfer is often required. When it comes to liquid plates with multiple holes (such as 48 holes and 96 holes), when liquid transfer is required, a multi-headed pipette is generally used to transfer liquids row by row. During the process, the liquid is first sucked into the gun head and temporarily stored, and then spit into the target tube; although the row-by-row operation can improve efficiency to a certain extent, the overall efficiency is still low; and the liquid needs to be stored in the gun head, and after use, it needs to be cleaned to avoid contamination; if continuous operation is required, the liquid in the same column on the multi-hole liquid plate must be of the same type, otherwise the pipette needs to be replaced and cleaned; such as the pipette device with Chinese patent publication number CN110823642A.

[0003] Although some automated liquid transfer devices have appeared, such as the liquid transfer device with Chinese Patent Publication No. CN116212991A, the structure is still based on a multi-head liquid transfer gun, and the liquid transfer efficiency is still relatively low.

[0004] In view of the large number of pipetting needs, it is necessary to design a special pipetting machine to simplify the operation steps and improve the pipetting efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-channel liquid transfer machine. Aiming at the liquid transfer needs of a multi-hole liquid plate, a multi-channel liquid transfer needle is adopted, and pneumatic boosting is combined to perform efficient liquid transfer; at the same time, the liquid transfer needle can be automatically cleaned to realize automated operation.

[0006] In order to achieve the above-mentioned utility model object, the utility model provides a multi-channel liquid transfer machine, including a bottom plate, a loading device, a unloading device, a transfer device, and a baffle device;

[0007] The bottom plate is provided with a loading device and a unloading device;

[0008] A pick-and-place station is formed at the front of the base plate;

[0009] A transfer device is provided in the middle of the bottom plate, the transfer device is arranged above the loading device and the unloading device, and a transfer cleaning station is provided below the transfer device;

[0010] The front of the loading device is provided with a placement slot for the orifice plate to be transferred, and the rear is provided with a cleaning water tank; the loading device can drive the orifice plate to be transferred to move between the pick-up and placement station at the front and the transfer and cleaning station in the middle;

[0011] The front of the unloading device is provided with a placement slot for the orifice plate to be received, and the rear is provided with a cleaning water tank; the unloading device can drive the orifice plate to be received to move between the pick-up and placement station at the front and the transfer and cleaning station in the middle;

[0012] A baffle device is arranged at the rear of the bottom plate, and a baffle is arranged inside the baffle device. The baffle can be controlled to move at the cleaning station in the middle and the idle position at the rear.

[0013] As a further improvement of the utility model, a linear slide module is provided at the bottom of the feeding device, and a feeding platform is installed on the slide;

[0014] The loading platform has two cavities. The cavity in front of the loading platform is a placement slot for placing the orifice plate to be transferred, and the cavity behind the loading platform is equipped with a cleaning sink. The cleaning sink is connected to the outside world through an interface.

[0015] A linear slide module is provided at the bottom of the unloading device, and an unloading platform is installed on the slide;

[0016] The unloading table has two cavities. The cavity in front of the unloading table is a placement slot for placing the orifice plate to be received, and the cavity behind the unloading table is equipped with a cleaning sink; the cleaning sink is connected to the outside world through an interface.

[0017] Furthermore, a detection element for detecting whether the orifice plate to be transferred is in place is installed at the cavity in front of the loading platform; a detection element for detecting whether the orifice plate to be received is in place is installed at the cavity in front of the unloading platform.

[0018] Furthermore, the detection element is a photoelectric sensor or a micro switch.

[0019] Furthermore, a circle of sealing gasket is provided at the two cavity positions of the loading platform.

[0020] Furthermore, the number of holes of the orifice plate to be transferred and the orifice plate to be received is the same, or in multiples.

[0021] As a further improvement of the utility model, the transfer device is provided with a plurality of columns, and a fixed platform is provided on the top of the columns;

[0022] A linear drive element is provided on the fixed platform, and an extension rod of the linear drive element is connected to the lifting platform;

[0023] The lifting platform is mounted on the column via a linear slider;

[0024] A sealed cavity is provided on one side above the loading device of the lifting platform, and a number of regularly arranged loading pipette needles are provided at the location of the sealed cavity; a pneumatic joint is provided on the sealed cavity, and is connected to an external compressed air source through a solenoid valve;

[0025] A plurality of regularly arranged material discharging and pipetting needles are provided on one side above the discharging device of the lifting platform;

[0026] The number of the loading pipette needles and the unloading pipette needles is the same, and they are connected one by one through the catheter;

[0027] The lower surface of the sealing cavity is a sealing surface.

[0028] Furthermore, the linear drive element is an electric cylinder module or a linear cylinder.

[0029] Furthermore, the column is a cylindrical optical axis, and the linear slider is a linear bearing.

[0030] As a further improvement of the utility model, the baffle device is provided with a mounting bracket;

[0031] A driving element is provided on the mounting bracket, and the driving element is connected to the baffle through a transmission device;

[0032] The baffle is a horizontally arranged baffle.

[0033] Furthermore, the driving element is a driving motor, and the transmission device is a gear rack mechanism;

[0034] A gear is installed on the output shaft of the driving motor, the baffle is connected to the rack, and the gear is meshed with the rack.

[0035] Furthermore, an adapter plate is fixed to the rear side of the rack, and a linear guide slider device is provided between the adapter plate and the mounting bracket.

[0036] The multi-channel liquid transfer machine of the utility model utilizes compressed air to realize one-time liquid transfer in multiple channels, has high transfer efficiency, and has one-to-one correspondence between the pipetting needles, thereby realizing the transfer of liquids of different types and concentrations.

[0037] The multi-channel liquid transfer machine of the utility model has a high degree of automation and can replace manual work that requires a large amount of repetitive operations, low efficiency and a long time.

[0038] The multi-channel liquid transfer machine of the utility model can realize the liquid transfer of the whole plate and the waste liquid discharge action.

[0039] The multi-channel liquid transfer machine of the utility model is suitable for large-volume liquid transfer operations and for occasions where the liquid transfer accuracy is not high.

[0040] The multi-channel liquid transfer machine of the utility model has the transfer needles at both ends directly connected, and the liquid is directly pressed by compressed air, thus omitting the storage and movement correction of the liquid in the middle, achieving higher transfer efficiency and avoiding storage pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1The overall structure of the multi-channel liquid transfer machine of the utility model is shown in FIG. Figure 1 ;

[0042] Figure 2 The overall structure of the feeding device is shown in Figure 1. Figure 1 ;

[0043] Figure 3 The overall structure of the feeding device is shown in Figure 1. Figure 2 ;

[0044] Figure 4 The overall structure of the feeding device is shown in Fig. Figure 1 ;

[0045] Figure 5 The overall structure of the feeding device is shown in Fig. Figure 2 ;

[0046] Figure 6 It is a schematic diagram of the overall structure of the transfer device;

[0047] Figure 7 This is a schematic diagram of the installation of the pipette needle;

[0048] Figure 8 is a schematic diagram of the overall structure of the baffle device;

[0049] Fig. 9 is a schematic diagram of the driving structure of the baffle device;

[0050] Fig.10 It is a schematic diagram of the transfer preparation state of the multi-channel liquid transfer machine of the utility model;

[0051] Fig.11 The transfer process of the multi-channel liquid transfer machine of the utility model is shown in FIG. Figure 1 ;

[0052] Fig.12 The transfer process of the multi-channel liquid transfer machine of the utility model is shown in FIG. Figure 2 ;

[0053] Fig.13 This is a transfer working principle diagram of the multi-channel liquid transfer machine of the utility model;

[0054] Fig.14 The transfer process of the multi-channel liquid transfer machine of the utility model is shown in FIG. Figure 3 ;

[0055] Fig.15 Schematic diagram of the pipette needle cleaning process;

[0056] Fig.16 Illustration of the drainage process Figure 1 ;

[0057] Fig.17 Illustration of the drainage process Figure 2 . DETAILED DESCRIPTION

[0058] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0059] The multi-channel liquid transfer machine of the utility model has an overall structure as follows Figure 1 As shown, it includes a base plate 1, a loading device 2, a unloading device 4, a transfer device 6, and a baffle device 7.

[0060] A loading device 2 and a unloading device 4 are provided on the bottom plate 1. The two devices are preferably arranged in parallel to form a pick-up and placement station at the front of the bottom plate 1; a transfer device 6 is provided in the middle of the bottom plate 1, and the transfer device 6 is arranged across the loading device 2 and the unloading device 4, and a transfer and cleaning station is provided below the transfer device 6; a baffle device 7 is provided at the rear of the bottom plate 1, and a baffle is provided inside the baffle device 7. The baffle can be moved in a controlled manner, and can be moved forward to the transfer and cleaning station, and can be moved backward to an idle position at the rear of the bottom plate 1.

[0061] The structures of the loading device 2 and the unloading device 4 are basically the same.

[0062] The specific structure of the feeding device 2 is as follows: Figure 2 , Figure 3 As shown; a linear slide module 21 is provided at the bottom, and a loading platform 23 is installed on the slide 22; the loading platform 23 has two cavities, and a circle of sealing gasket 24 is preferably provided at the two cavities of the loading platform 23; the front cavity of the loading platform 23 is used to place the orifice plate 3 to be transferred, and the rear cavity is installed with a cleaning sink 25; the cleaning sink 25 is connected to the external water source, sewage tank and other equipment through an interface 26; a detection element 27 is installed at the front cavity of the loading platform 23 for detecting whether the orifice plate 3 to be transferred is placed in place.

[0063] The specific structure of the feeding device 4 is as follows: Figure 4 , Figure 5 As shown; a linear slide module 41 is provided at the bottom, and a feed table 43 is installed on the slide 42; the feed table 43 has two cavities, the front cavity of the feed table 43 is used to place the orifice plate 5 to be received, and the rear cavity is installed with a cleaning sink 44; the cleaning sink 44 is connected to external water sources, sewage tanks and other equipment through an interface 45; a detection element 46 is installed at the front cavity of the feed table 43 for detecting whether the orifice plate 5 to be received is placed in place.

[0064] The detection elements 27 and 46 may be photoelectric sensors or micro switches.

[0065] The orifice plate 3 to be transferred and the orifice plate 5 to be received are orifice plates with the same number of holes or in a multiple relationship. In the accompanying drawings of this embodiment, the orifice plate 3 to be transferred is a 48-hole plate (6×8), and the orifice plate 5 to be received is a 96-hole plate (12×8), that is, the orifice plate 5 to be received can receive liquid from two orifice plates 3 to be transferred at the same time.

[0066] The specific structure of the transfer device 6 is as follows: Figure 6 As shown, there are several columns 61, a fixed platform 62 is provided on the top of the column 61, a linear drive element 63 is provided on the fixed platform 62, and the extension rod (631) of the linear drive element 63 is connected to the lifting platform 64; the lifting platform 64 is preferably installed on the column 61 through a linear slider 641 to form a linear motion guide; a sealed cavity 65 is provided on the upper side of the loading device 2 of the lifting platform 64, and a number of regularly arranged loading pipette needles 66 are provided at the position of the sealed cavity 65; a pneumatic joint 651 is provided on the sealed cavity 65, and is connected to the external compressed air source through an electromagnetic valve 652, and the air pipe is not drawn in the figure; a number of regularly arranged unloading pipette needles 67 are provided on the upper side of the unloading device 4 of the lifting platform 64; the number of loading pipette needles 66 and unloading pipette needles 67 is the same, and they are connected together one by one through a conduit (the conduit is not drawn in the figure).

[0067] The linear drive element 63 may be an electric cylinder module or a linear cylinder.

[0068] In this embodiment, the column 61 is a cylindrical optical axis, and the linear slider 641 is a linear bearing; of course, a linear guide rail and a linear slider can also be used.

[0069] Further Figure 7 As shown, the loading pipette needle 66 and the unloading pipette needle 67 are both extended downward, and the downward extension height is pre-adjusted to match the depth of the holes of the well plate 3 to be transferred and the well plate 5 to be received, respectively.

[0070] In particular, the unloading pipette needle 67 corresponds to the receiving well plate 5, so the unloading pipette needle 67 is arranged more closely to adapt to the well position distribution of half of the 96-well plate in this embodiment.

[0071] The lower surface of the sealing cavity 65 is a sealing surface 653 which is smooth and straight.

[0072] The specific structure of the baffle device 7 is as follows Figure 8 , Fig. 9As shown, a mounting bracket 71 is provided; a driving element 72 is provided on the mounting bracket 71, and the driving element 72 is connected to the baffle 75 through a transmission device; the baffle 75 is a horizontally arranged baffle; in this embodiment, the driving element 72 is a driving motor, and the transmission device is a gear rack mechanism, a gear 73 is installed on the output shaft of the driving motor, and the baffle 75 is connected to the rack 74. When the driving motor works, it drives the gear 73 to rotate, and the gear 73 is meshed with the rack 74 to drive the rack to move linearly, thereby driving the baffle 75 to extend forward to the transfer cleaning station, or backward to an idle place.

[0073] In order to improve the movement stability of the baffle 75, an adapter plate 76 is fixed to the rear side of the rack 74, and a linear guide slider device is provided between the adapter plate 76 and the mounting bracket 71, that is, a linear slider 77 is installed on the adapter plate 76, and a linear guide 78 is horizontally provided on the mounting bracket 71, and the linear slider 77 cooperates with the linear guide 78; in this embodiment, two sets of linear guide slider devices are provided, which are distributed up and down, thereby improving the torsion resistance of the adapter plate 76 and ultimately improving the stability of the baffle 75.

[0074] In this embodiment, a number of sensors are provided at both ends of the linear drive mechanism composed of the linear slide module 21, the linear slide module 41, and the driving element 72, which are used to cooperate with the detection baffles set on the slide 22, the slide 42, and the adapter plate 76 to detect the extreme position of the linear motion to avoid the linear transmission from getting stuck and causing damage to the drive motor.

[0075] The multi-channel liquid transfer machine of the utility model first has the function of transferring liquid in large quantities:

[0076] like Fig.10 As shown, the loading device 2 and the unloading device 4 are in motion, the slide 22 drives the loading platform 23 to move forward, and the slide 42 drives the unloading platform 43 to move forward, so that the position of the transfer device 6 is exceeded, that is, the pick-up and placement station is reached, so that the orifice plate 3 to be transferred and the orifice plate 5 to be received are conveniently placed on the loading platform 23 and the unloading platform 43 respectively;

[0077] like Fig.14 As shown, the loading device 2 and the unloading device 4 are in motion, the slide 22 drives the loading platform 23 and the orifice plate 3 to be transferred, and the slide 42 drives the unloading platform 43 and the orifice plate 5 to be received and then moves to the transfer and cleaning station, that is, located directly below the transfer device 6;

[0078] like Fig.11As shown, the baffle device 7 is started, driving the baffle 75 to move from the transfer and cleaning station to the idle position; so that the loading pipette needle 66 is exposed directly above the well plate 3 to be transferred, and the position of the pipette needle corresponds one-to-one with the well position; the unloading pipette needle 67 is exposed above the well plate 5 to be received, and in this embodiment corresponds to the 48 well positions in the front, or to the 48 well positions in the back, and the position of the pipette needle corresponds one-to-one with the well position.

[0079] like Fig.12 As shown, the transfer device 6 is started, and the extending rod 631 of the linear drive element 63 drives the lifting platform 64 to descend, so that the loading pipette needle 66 is inserted into the hole of the well plate 3 to be transferred, and the unloading pipette needle 67 is inserted into the hole of the well plate 5 to be received; as the lifting platform 64 continues to descend, the sealing surface 653 on the lower surface of the sealing cavity 65 is pressed against the sealing gasket 24 on the outer side of the well plate 3 to be transferred, thereby achieving airtightness.

[0080] like Fig.13 As shown, after the action is in place, the solenoid valve 652 opens, allowing the compressed air from the outside to enter the sealed chamber 65 through the pneumatic joint 651, generating high pressure above the liquid level of the orifice plate 3 to be transferred, and the liquid in the hole of the orifice plate 3 to be transferred is pressed into the loading pipette needle 66 by the air pressure, and reaches the unloading pipette needle 67 through the pipeline, and finally flows into the hole of the orifice plate 5 to be received, realizing the transfer of the liquid. The entire transfer work lasts for 1-2 minutes depending on factors such as the air pressure, the thickness of the pipette needle, and the amount of liquid.

[0081] Then, the electromagnetic valve 652 is closed, and the liquid transfer work is completed; the linear drive element 63 of the transfer device 6 works in the reverse direction, driving the lifting platform to rise, such as Fig.11 Subsequently, the driving element 72 of the baffle device 7 works in the reverse direction, driving the baffle 75 to return to the transfer cleaning station, as shown Fig.14 As shown, at this time, the baffle 75 is located directly below the loading pipette needle 66 and the unloading pipette needle 67, and can catch the liquid dripping from the pipette needle to prevent the liquid from contaminating the equipment or accidentally dripping into different holes of the receiving orifice plate 5, causing cross contamination; then, the loading device 2 and the unloading device 4 act in the opposite direction, so that the orifice plate 3 to be transferred and the orifice plate 5 to be received are moved forward to the pick-up and placement station, which is convenient for removing the orifice plate 3 to be transferred and the orifice plate 5 to be received from the loading platform 23 and the unloading platform 43 for circulation and subsequent processing.

[0082] At this time, the cleaning water tank 25 on the loading device 2 is just moved to the bottom of the loading pipette needle 66, and the cleaning water tank 44 on the unloading device 4 is just moved to the bottom of the unloading pipette needle 67; the baffle device 7 is started again, and the baffle 75 is moved from the transfer cleaning station to the idle position, that is, Figure 1 shown.

[0083] like Fig.15As shown, the transfer device 6 is started again, and the linear drive element 63 drives the lifting platform 64 to descend, the loading pipette needle 66 is inserted into the cleaning sink 25, and the unloading pipette needle 67 is inserted into the cleaning sink 44 to clean the pipette needle; during the process, the solenoid valve 652 can also be started in time to inject the cleaning fluid into the pipette needle and the catheter for deep cleaning.

[0084] The multi-channel liquid transfer machine of the utility model also has the function of discharging liquid in large quantities:

[0085] like Fig.16 As shown, there is no need to place the receiving orifice plate 5 on the unloading device 4, the loading device 2, the orifice plate 3 to be transferred (which contains the liquid to be discharged), and the unloading device 4 move the cleaning water tank 44 to the bottom of the transfer device 6 at the same time.

[0086] like Fig.17 As shown, the transfer device 6 is started, the linear drive element 63 drives the lifting platform 64 to descend, the loading pipette needle 66 is inserted into the hole of the well plate 3 to be transferred, and the unloading pipette needle 67 is inserted into the cleaning water tank 44; the sealing surface 653 on the lower surface of the sealing cavity 65 is pressed against the sealing gasket 24 on the outer side of the well plate 3 to be transferred to achieve airtightness.

[0087] Subsequently, the solenoid valve 652 opens, the air pressure in the sealed chamber 65 increases, and the liquid in the orifice plate 3 to be transferred passes through the loading pipette needle 66, the pipeline, and the unloading pipette needle 67, and finally flows into the cleaning sink 44; it continues to work for 1-2 minutes, so that all the liquid in the orifice plate 3 to be transferred is discharged into the cleaning sink 44.

[0088] The solenoid valve 652 is closed, the transfer device 6 moves in the reverse direction to raise the lifting platform 64, and the baffle device 7 moves the baffle 75 to the cleaning station; the loading device 2 is activated to move the orifice plate 3 to be transferred that has completed drainage to the pick-up and placement station for easy removal.

[0089] At this time, the cleaning water tank 25 moves just below the loading pipette needle 66, and the cleaning water tank 44 is still below the unloading pipette needle 67 (the unloading device 4 is not in operation); the baffle device 7 is started again, and the baffle 75 is moved from the transfer and cleaning station to an idle place; the transfer device 6 is started again, and the linear drive element 63 drives the lifting platform 64 to descend, and the loading pipette needle 66 is inserted into the cleaning water tank 25, and the unloading pipette needle 67 is inserted into the cleaning water tank 44 to clean the pipette needle; during the process, the solenoid valve 652 can also be started at the right time to inject the cleaning fluid into the pipette needle and the catheter for deep cleaning.

[0090] When the baffle plate 75 is moved to the idle position, it is already outside the transfer device 6 , and the baffle plate 75 can also be cleaned with a rag or the like.

[0091] The multi-channel liquid transfer machine of the utility model utilizes compressed air to realize one-time liquid transfer in multiple channels, has high transfer efficiency, and has one-to-one correspondence between the pipetting needles, thereby realizing the transfer of liquids of different types and concentrations.

[0092] The multi-channel liquid transfer machine of the utility model has a high degree of automation and can replace manual work that requires a large amount of repetitive operations, low efficiency and a long time.

[0093] The multi-channel liquid transfer machine of the utility model can realize the liquid transfer of the whole plate and the waste liquid discharge action.

[0094] The multi-channel liquid transfer machine of the utility model is suitable for large-volume liquid transfer operations and for occasions where the liquid transfer accuracy is not high.

[0095] The multi-channel liquid transfer machine of the utility model has the transfer needles at both ends directly connected, and the liquid is directly pressed by compressed air, thus omitting the storage and movement correction of the liquid in the middle, achieving higher transfer efficiency and avoiding storage pollution.

[0096] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A multi-channel liquid transfer machine, characterized in that: It includes a bottom plate, a loading device, a unloading device, a transfer device, and a baffle device; The bottom plate is provided with a loading device and a unloading device; A pick-and-place station is formed at the front of the base plate; A transfer device is provided in the middle of the bottom plate, the transfer device is arranged above the loading device and the unloading device, and a transfer cleaning station is provided below the transfer device; The front of the loading device is provided with a placement slot for the orifice plate to be transferred, and the rear is provided with a cleaning water tank; the loading device can drive the orifice plate to be transferred to move between the pick-up and placement station at the front and the transfer and cleaning station in the middle; The front of the unloading device is provided with a placement slot for the orifice plate to be received, and the rear is provided with a cleaning water tank; the unloading device can drive the orifice plate to be received to move between the pick-up and placement station at the front and the transfer and cleaning station in the middle; A baffle device is arranged at the rear of the bottom plate, and a baffle is arranged inside the baffle device. The baffle can be controlled to move at the cleaning station in the middle and the idle position at the rear.

2. The multi-channel liquid transfer machine according to claim 1, characterized in that: A linear slide module is provided at the bottom of the feeding device, and a feeding platform is installed on the slide; The loading platform has two cavities. The cavity in front of the loading platform is a placement slot for placing the orifice plate to be transferred, and the cavity behind the loading platform is equipped with a cleaning sink. The cleaning sink is connected to the outside world through an interface. A linear slide module is provided at the bottom of the unloading device, and an unloading platform is installed on the slide; The unloading platform has two cavities. The cavity in front of the unloading platform is a placement slot for placing the orifice plate to be received, and the cavity behind the unloading platform is equipped with a cleaning sink. The cleaning sink is connected to the outside world through an interface. A circle of sealing gasket is provided at the two cavity positions of the loading table.

3. The multi-channel liquid transfer machine according to claim 2, characterized in that: A detection element for detecting whether the orifice plate to be transferred is placed in place is installed at the cavity in front of the loading platform; a detection element for detecting whether the orifice plate to be received is placed in place is installed at the cavity in front of the unloading platform.

4. The multi-channel liquid transfer machine according to claim 3, characterized in that: The detection element is a photoelectric sensor or a micro switch.

5. The multi-channel liquid transfer machine according to claim 1, characterized in that: The transfer device is provided with a plurality of columns, and a fixed platform is provided on the top of the columns; A linear drive element is provided on the fixed platform, and an extension rod of the linear drive element is connected to the lifting platform; The lifting platform is mounted on the column via a linear slider; A sealed cavity is provided on one side above the loading device of the lifting platform, and a number of regularly arranged loading pipette needles are provided at the location of the sealed cavity; a pneumatic joint is provided on the sealed cavity, and is connected to an external compressed air source through a solenoid valve; A plurality of regularly arranged material discharging and pipetting needles are provided on one side above the discharging device of the lifting platform; The number of the loading pipette needles and the unloading pipette needles is the same, and they are connected one by one through the catheter; The lower surface of the sealing cavity is a sealing surface.

6. The multi-channel liquid transfer machine according to claim 5, characterized in that: The linear drive element is an electric cylinder module or a linear cylinder.

7. The multi-channel liquid transfer machine according to claim 5, characterized in that: The column is a cylindrical optical axis, and the linear slider is a linear bearing.

8. The multi-channel liquid transfer machine according to claim 1, characterized in that: A baffle device is provided with a mounting bracket; A driving element is provided on the mounting bracket, and the driving element is connected to the baffle through a transmission device; The baffle is a horizontally arranged baffle.

9. The multi-channel liquid transfer machine according to claim 8, characterized in that: The driving element is a driving motor, and the transmission device is a gear rack mechanism; A gear is installed on the output shaft of the driving motor, the baffle is connected to the rack, and the gear is meshed with the rack.

10. The multi-channel liquid transfer machine according to claim 9, characterized in that: An adapter plate is fixed to the rear side of the rack, and a linear guide slider device is arranged between the adapter plate and the mounting bracket.

Images