Powder adding mechanism and mobile phase preparation equipment

Abstract

The invention discloses a powder adding mechanism and mobile phase preparation equipment, and relates to the technical field of medicine preparation, and the powder adding mechanism comprises a powder adding assembly, a powder adding driving assembly and a weighing assembly; the powder adding assembly comprises a stock bin with an opening and a feeding rod rotationally arranged in the stock bin, and a powder adding head is arranged at the opening of the stock bin; the powder adding driving assembly is used for driving the powder adding assembly to move to the position of the weighing assembly and driving the feeding rod to rotate so that the feeding rod can send out powder in the stock bin through the powder adding head. The weighing assembly is used for weighing the powder fed out by the powder adding assembly. According to the powder adding mechanism, through cooperation of the powder adding driving assembly and the powder adding assembly, automatic powder adding can be achieved, metering deviation caused by manual adding is avoided, the powder adding efficiency is improved, and meanwhile the experimental result accuracy and the product quality stability are guaranteed.

Description

Technical Field

[0001] This application relates to the field of pharmaceutical preparation technology, and more specifically, to a powder adding mechanism and a mobile phase preparation device. Background Technology

[0002] In related fields, the addition of raw material powders usually relies on manual operation. However, slight carelessness during the powder addition process can lead to measurement deviations, which in turn affect the accuracy of experimental results and the stability of product quality.

[0003] In addition, powder that falls on the load-bearing platform usually needs to be cleaned up manually, which will affect the efficiency of the entire powder adding process.

[0004] Therefore, how to improve the efficiency of powder addition while ensuring the accuracy of experimental results and the stability of product quality has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a powder adding mechanism that can improve the powder adding efficiency while ensuring the accuracy of experimental results and the stability of product quality.

[0006] Another objective of this application is to provide a mobile phase preparation apparatus having the above-described powder addition mechanism.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A powder dispensing mechanism includes a powder dispensing component, a powder dispensing drive component, and a weighing component, wherein:

[0009] The powder feeding assembly includes a hopper with an opening and a feeding rod rotatably disposed within the hopper, wherein a powder feeding head is provided at the opening of the hopper;

[0010] The powder feeding drive assembly is used to drive the powder feeding assembly to the position of the weighing assembly and drive the feeding rod to rotate, so that the feeding rod can send the powder in the hopper out from the powder feeding head;

[0011] The weighing component is used to weigh the powder delivered by the powder adding component.

[0012] Optionally, in the above-mentioned powder feeding mechanism, the feeding rod is provided with a protrusion, the protrusion having an inclined guide surface, and the hopper is provided with a guide portion, the guide surface slidingly engaging with the guide portion, so that the feeding rod can move along the axial direction of the hopper and expel the powder in the hopper from the powder feeding head; or,

[0013] The feeding rod is equipped with a conveying section for conveying the powder in the hopper, and the conveying section has a spiral structure.

[0014] Optionally, in the above-described powder-adding mechanism, the top surface of the guide portion is a spherical surface that slides in conjunction with the guide surface; or,

[0015] The guide portion is provided with balls that slide in cooperation with the guide surface.

[0016] Optionally, in the above-mentioned powder feeding mechanism, the powder feeding assembly further includes a material rod mounting base, the feeding rod being rotatably disposed in the material rod mounting base, and the material rod mounting base being connected to the hopper.

[0017] Optionally, in the above-mentioned powder adding mechanism, the powder adding component further includes an elastic component, which includes an elastic element and an elastic element mounting base;

[0018] The two ends of the elastic element are compressed between the protrusion and the material rod mounting seat through the elastic element mounting seat, or the two ends of the elastic element are compressed between the hopper and the material rod mounting seat through the elastic element mounting seat.

[0019] Optionally, in the above-mentioned powder feeding mechanism, the powder feeding component is provided with a mounting cavity for accommodating the elastic component and / or the protrusion, the material rod mounting seat has a first cavity, the hopper has a second cavity and a powder cavity for accommodating the powder, a partition plate is provided between the second cavity and the powder cavity, and the mounting cavity includes at least the first cavity and the second cavity.

[0020] Optionally, in the above-mentioned powder feeding mechanism, the powder feeding assembly further includes a cover body, which is detachably connected to the hopper, and the cover body has a receiving cavity for accommodating the powder feeding head.

[0021] Optionally, in the above-described powder feeding mechanism, the cover is provided with a plurality of positioning posts for cooperating with the hopper; and / or,

[0022] The cover is magnetically connected to the hopper, and the cover is provided with a mounting groove for placing the magnetic component.

[0023] Optionally, the powder adding mechanism further includes a cap removal assembly, which includes a cap removal drive and an insert plate. The cap removal drive is used to drive the insert plate to move toward or away from the cap, and the cap is provided with a slot for engaging with the insert plate.

[0024] Optionally, the powder adding mechanism further includes a cleaning component for cleaning the surface of the weighing component. The cleaning component includes a cleaning plate, a collection container, and a negative pressure drive. The cleaning plate is located below the insert plate and can move synchronously with the insert plate. The cleaning plate has multiple adsorption holes on the side near the weighing component so that the adsorption holes can adsorb residual powder on the weighing component into the collection container under the negative pressure generated by the negative pressure drive.

[0025] Optionally, in the above-mentioned powder adding mechanism, the powder adding drive assembly includes a first lifting assembly, a second lifting assembly, a rotation drive component, and a floating component;

[0026] The first lifting component is used to drive the powder feeding component to move toward or away from the weighing component. The second lifting component is used to drive the rotation drive to move toward or away from the powder feeding component, so that the rotation drive can drive the feeding rod to rotate or disengage from the feeding rod. The floating component is used to drive the rotation drive to float toward or away from the powder feeding component.

[0027] Optionally, in the powder adding mechanism described above, the first lifting component includes a first lifting rail, a first lifting seat, and a first lifting drive component. The first lifting seat is disposed on the first lifting rail, and the first lifting drive component is used to drive the first lifting seat to move along the first lifting rail. The powder adding component is used to connect with the first lifting seat.

[0028] The second lifting assembly includes a second lifting rail, a second lifting seat, and a second lifting drive. The second lifting rail is disposed on the first lifting seat, and the second lifting seat is disposed on the second lifting rail. The second lifting drive is used to drive the second lifting seat to move along the second lifting rail.

[0029] The floating component includes a floating track and a floating mounting base. The floating track is disposed on the second lifting base, and the floating mounting base is movably disposed on the floating track. The rotation drive component is disposed on the floating mounting base.

[0030] Optionally, in the above-described powder feeding mechanism, the powder feeding head and the hopper are an integral structure; or,

[0031] The powder feeding head is connected to the hopper via a lock nut.

[0032] Optionally, in the above-mentioned powder feeding mechanism, the outer wall of the powder feeding head extends in a direction away from the center of the powder feeding head to form a positioning groove, and the opening of the hopper is provided with a plug end for inserting into the positioning groove. The plug end is provided with a threaded portion for cooperating with the locking nut, and the locking nut is used to abut against the bottom wall of the positioning groove on the side opposite to the plug end.

[0033] Optionally, in the powder feeding mechanism described above, the feeding rod is further provided with one or more stirring parts, the stirring parts having a hollow area for the powder to pass through.

[0034] Optionally, the powder adding mechanism further includes a feeding mechanism and a feeding rack. The feeding rack is used to place the powder adding component. The feeding mechanism includes a movable gripper, which is used to grip the weighing boat onto the weighing component and move the powder adding component on the feeding rack above the weighing component, so that the powder in the powder adding component is added into the weighing boat under the drive of the powder adding drive component.

[0035] Optionally, in the above-mentioned powder feeding mechanism, the feeding mechanism further includes a transfer component, which is used to transport the powder feeding component and the weighing boat. The moving gripper is used to place the powder feeding component on the transfer component onto the feeding rack and move the weighing boat on the transfer component to the weighing component. The moving gripper can also move the weighing boat containing powder back to the transfer component and transfer the weighing boat containing powder to the dispensing station of the mobile phase preparation equipment through the transfer component.

[0036] A mobile phase preparation apparatus, comprising a powder feeding mechanism as described in any of the preceding claims.

[0037] Optionally, the above-mentioned mobile phase preparation equipment includes a robotic arm and a dispensing station, wherein the robotic arm is used to move the powder provided by the powder feeding mechanism to the dispensing station.

[0038] The powder adding mechanism provided in this application features a powder adding head at the opening of a hopper, with a feeding rod rotatably mounted inside the hopper. This allows the powder adding drive assembly to move the powder adding component to the position of the weighing component and rotate the feeding rod, thereby feeding the powder from the hopper through the powder adding head to the weighing component for weighing. As can be seen from the above example, the powder adding mechanism provided in this application, through the cooperation of the powder adding drive assembly and the powder adding component, can achieve automatic powder adding, avoiding measurement deviations that occur with manual adding. This improves powder adding efficiency while ensuring the accuracy of experimental results and the stability of product quality.

[0039] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0040] 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0041] Figure 1 A schematic diagram of the powder adding mechanism provided in the embodiments of this application. Figure 1 ;

[0042] Figure 2 A schematic diagram of the powder adding mechanism provided in the embodiments of this application. Figure 2 ;

[0043] Figure 3 A partial schematic diagram of the powder-adding mechanism provided in the embodiments of this application. Figure 1 ;

[0044] Figure 4 A partial schematic diagram of the powder-adding mechanism provided in the embodiments of this application. Figure 2 ;

[0045] Figure 5 This is a cross-sectional schematic diagram of the powder-adding component provided in Embodiment 1 of this application;

[0046] Figure 6 This is an isometric view of the powder-adding component provided in Embodiment 1 of this application;

[0047] Figure 7 This is a cross-sectional schematic diagram of the powder adding component provided in Embodiment 2 of this application;

[0048] Figure 8 This is an isometric view of the powder-adding component provided in Embodiment 2 of this application.

[0049] Among them, 100 is the powder feeding component, 10 is the hopper, 11 is the guide part, 12 is the second cavity, 121 is the second limiting part, 13 is the powder cavity, 14 is the partition plate, 15 is the plug-in end, 151 is the threaded part, 20 is the feeding rod, 21 is the protrusion, 211 is the guide surface, 22 is the conveying part, 23 is the mixing part, 231 is the hollow area, 24 is the bushing, 25 is the connector, 26 is the pressing part, 30 is the powder feeding head, 31 is the locking nut, 32 is the positioning groove, 33 is the connecting section, 34 is the powder outlet section, 341 is the powder outlet, 40 is the feeding rod mounting seat, 41 is the first cavity, 411 is the first limiting part, 42 is the countersunk hole, 43 is the slot, 50 is the elastic component, 51 is the elastic element, 52 is the elastic element mounting seat, 60 is the mounting cavity, 70 is the cover, 71 is the positioning post, 72 is the feeding rod, 72 is the elastic element, 73 is the elastic element, 54 is the elastic element mounting seat, 60 is the mounting cavity, 70 is the cover, 71 is the positioning post, 72 is the elastic element, 73 is the elastic element, 74 is the elastic element, 75 is the elastic element ...6 is the elastic element, 77 is the elastic element, 77 is the elastic element, 78 is the elastic element, 79 is the elastic element, 70 is the elastic element, 71 is the elastic 80 is a slot, 200 is a positioning ring, 200 is a powder adding drive assembly, 201 is a first lifting assembly, 2011 is a first lifting rail, 2012 is a first lifting seat, 2013 is a first lifting drive component, 2014 is a gripper, 202 is a second lifting assembly, 2021 is a second lifting rail, 2022 is a second lifting seat, 2023 is a second lifting drive component, 203 is a rotation drive component, 204 is a floating component, 2041 is a floating rail, 2042 is a floating mounting seat, 300 is a weighing assembly, 400 is a cleaning assembly, 401 is a cleaning plate, 500 is a cap removal assembly, 501 is a cap removal drive component, 502 is an insert plate, 600 is a feeding mechanism, 601 is a moving gripper, 602 is a transfer assembly, 6021 is a pallet, 700 is a feeding rack, and 800 is a weighing boat. Detailed Implementation

[0050] The core of this application is to provide a powder adding mechanism that can improve the powder adding efficiency while ensuring the accuracy of experimental results and the stability of product quality.

[0051] Another key aspect of this application is to provide a mobile phase preparation device having the aforementioned powder addition mechanism.

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0053] In related fields, such as laboratory drug formulation and the quantitative addition of raw material powders in factory production, the addition of raw material powders usually relies on manual operation. However, even slight carelessness during powder addition can lead to measurement deviations, affecting the accuracy of experimental results and the stability of product quality. Furthermore, powder falling onto the load-bearing platform typically requires manual cleaning, impacting the efficiency of the entire powder addition process.

[0054] Therefore, such as Figure 1 As shown in the figure, this application discloses a powder adding mechanism, including a powder adding component 100, a powder adding drive component 200, and a weighing component 300. By cooperating with the powder adding component 100, the powder adding drive component 200 can automatically add powder, avoiding the measurement deviation that occurs when adding powder manually. This improves the powder adding efficiency while ensuring the accuracy of experimental results and the stability of product quality.

[0055] The following will combine Figures 1 to 8 The powder-adding mechanism disclosed in the embodiments of this application will be explained and described in detail.

[0056] Among them, such as Figure 5 and Figure 7 As shown, the powder adding assembly 100 may include a hopper 10 and a feeding rod 20. The hopper 10 has an opening at one end, and a powder adding head 30 is provided at the opening of the hopper 10. The powder adding head 30 is connected to the interior of the hopper 10 to add powder. The feeding rod 20 may be disposed inside the hopper 10, and, as shown... Figure 3 and Figure 4 As shown, the powder adding drive component 200 drives the powder adding component 100 to the position of the weighing component 300, and simultaneously drives the feeding rod 20 to rotate. This allows the feeding rod 20 to deliver the powder in the hopper 10 through the powder adding head 30 to the weighing boat 800 on the weighing component 300 for weighing. This avoids measurement deviations caused by manual addition, improving powder adding efficiency while ensuring the accuracy of experimental results and the stability of product quality. It should be noted that the weighing component 300 can be a balance or other weight-bearing device.

[0057] In some embodiments, such as Figure 5 and Figure 7As shown, the powder feeding head 30 has a powder outlet 341 for powder to flow out, and the powder feeding head 30 may include a connecting section 33 and a powder discharging section 34. The powder discharging section 34 has a large-diameter end and a small-diameter end, and the inner diameter of the powder discharging section 34 gradually decreases from the large-diameter end to the small-diameter end to reduce the risk of powder adhering to the wall. The large-diameter end of the powder discharging section 34 is connected to the connecting section 33, and the powder outlet 341 is located at the small-diameter end of the powder discharging section 34. Meanwhile, the connecting section 33 may adopt a cylindrical structure of equal diameter, and the inner diameter of the connecting section 33 may be consistent with the inner diameter of the hopper 10, and be fixedly connected to the opening of the hopper 10, so that the powder in the hopper 10 can be delivered out through the powder outlet 341 of the powder feeding head 30.

[0058] In some embodiments, such as Figure 5 and Figure 7 As shown, the powder feeding head 30 can be integrated with the hopper 10. Of course, as... Figures 5 to 8 As shown, the powder feeding head 30 can also be a separate structure from the hopper 10, and the powder feeding head 30 and the hopper 10 can be connected by a detachable connection method, such as by locking the powder feeding head 30 and the hopper 10 by locking the nut 31.

[0059] In some embodiments, such as Figure 5 and Figure 7 As shown, the outer wall of the powder feeding head 30 extends away from the center of the powder feeding head 30 to form a positioning groove 32. The opening of the hopper 10 is provided with a plug-in end 15 that can be inserted into the positioning groove 32, allowing the plug-in end 15 to be inserted into the positioning groove 32, thus achieving installation and positioning between the powder feeding head 30 and the opening of the hopper 10. Simultaneously, the plug-in end 15 is provided with a threaded portion 151 that mates with the locking nut 31. When the locking nut 31 is threadedly engaged with the threaded portion 151 of the plug-in end 15, the locking nut 31 abuts against the bottom wall of the positioning groove 32 on the side opposite to the plug-in end 15, thereby pressing the powder feeding head 30 to achieve a fixed connection between the powder feeding head 30 and the hopper 10.

[0060] In some embodiments, such as Figure 5 and Figure 7 As shown, the outer wall of the connecting section 33 of the powder feeding head 30, away from the powder discharging section 34, can extend in a direction away from the center of the powder feeding head 30 to form an annular flange. The cross-sectional shape of the annular flange can be L-shaped, so that the annular flange surrounds and forms a positioning groove 32. The annular flange can be distributed at intervals along the circumference of the connecting section 33, or it can be distributed continuously along the circumference of the connecting section 33. This allows the locking nut 31 to engage with the threaded portion 151 of the insertion end 15, while the locking nut 31 abuts against the bottom wall of the annular flange on the side away from the insertion end 15, thereby pressing the powder feeding head 30 to achieve the connection and fixation between the powder feeding head 30 and the hopper 10.

[0061] Of course, the plug end 15 of the hopper 10 can also be provided with a first threaded part, and a second threaded part can be provided on the outer wall of the connecting section 33 of the powder feeding head 30, so that the locking nut 31 can be threadedly engaged with the first threaded part and the second threaded part at the same time, thereby realizing the locking and fixing between the powder feeding head 30 and the hopper 10 by the locking nut 31.

[0062] In some embodiments, such as Figure 5 As shown, a protrusion 21 may be provided on the feeding rod 20, and the protrusion 21 has an inclined guide surface 211, so that when the feeding rod 20 rotates, the inclined guide surface 211 can slide and cooperate with the guide part 11, thereby allowing the feeding rod 20 to move up and down reciprocally along the axial direction of the hopper 10, so that the powder in the hopper 10 can be squeezed out from the powder outlet 341 of the powder feeding head 30 through the end of the feeding rod 20 near the powder feeding head 30, thereby reducing the risk of sticky powder getting stuck and improving the production efficiency of the product.

[0063] In some embodiments, such as Figure 5 As shown, the protrusion 21 can be a cylindrical structure sleeved on the outside of the feed rod 20, and the guide surface 211 can be inclined from the edge of the circular end face of the protrusion 21 toward the outer surface of the middle region of the protrusion 21, that is, the guide surface 211 and the axis of the protrusion 21 are not perpendicular. At the same time, the top surface of the guide part 11 can be a spherical surface that slides with the guide surface 211 to ensure the smoothness and stability of the sliding fit between the guide surface 211 of the protrusion 21 and the guide part 11. Of course, the guide part 11 can also be provided with a ball that slides with the guide surface 211, and the ball can rotate freely on the top surface of the guide part 11 to reduce the friction between the guide part 11 and the guide surface 211 of the protrusion 21, thereby ensuring the smoothness and stability of the sliding fit between the guide surface 211 of the protrusion 21 and the guide part 11.

[0064] In some embodiments, such as Figure 7 As shown, a conveying section 22 can be provided on the feeding rod 20. The conveying section 22 can adopt a spiral structure so that when the feeding rod 20 rotates, the powder in the hopper 10 can be sent out through the powder outlet 341 of the powder feeding head 30 through the conveying section 22 of the spiral structure, thereby realizing precise control of the powder output of the free-flowing powder.

[0065] In some embodiments, such as Figure 7As shown, the conveying section 22 can extend from the end of the feeding rod 20 near the powder outlet 341 toward the end away from the powder outlet 341. When the feeding rod 20 is in the initial state, the end face of the feeding rod 20 near the powder outlet 341 is flush with the powder outlet 341 to prevent the powder in the hopper 10 from flowing out of the powder outlet 341. When it is necessary to discharge the powder, the end of the feeding rod 20 near the powder outlet 341 can be extended out of the powder outlet 341 first, and then the feeding rod 20 can be rotated so that the conveying section 22 of the feeding rod 20 can send the powder in the hopper 10 out of the powder outlet 341 of the powder feeding head 30.

[0066] Of course, the powder outlet 341 of the powder feeding head 30 can also extend along the axial direction of the powder feeding head 30. At the same time, the conveying part 22 of the feeding rod 20 is located inside the powder outlet 341. When it is necessary to discharge the material, simply rotate the feeding rod 20 so that the conveying part 22 of the feeding rod 20 can send the powder in the hopper 10 out of the powder outlet 341 of the powder feeding head 30.

[0067] In some embodiments, such as Figure 3 and Figure 4 As shown, the powder feeding drive assembly 200 may include a first lifting assembly 201, a second lifting assembly 202, a rotation drive member 203, and a floating member 204. The first lifting assembly 201 can drive the powder feeding assembly 100 to move towards or away from the weighing assembly 300. The second lifting assembly 202 can drive the rotation drive member 203 to move towards or away from the powder feeding assembly 100, so that the rotation drive member 203 can drive the feeding rod 20 to rotate or disengage from the feeding rod 20. The floating member 204 can drive the rotation drive member 203 to float towards or away from the powder feeding assembly 100.

[0068] In some embodiments, such as Figure 3 and Figure 4As shown, the first lifting assembly 201 may include a first lifting rail 2011, a first lifting seat 2012, and a first lifting drive 2013. The first lifting seat 2012 is disposed on the first lifting rail 2011, and the first lifting drive 2013 can drive the first lifting seat 2012 to move along the first lifting rail 2011. The powder adding assembly 100 can be connected to the first lifting seat 2012. The second lifting assembly 202 may include a second lifting rail 2021, a second lifting seat 2022, and a second lifting drive 2023. The second lifting rail 2021 is disposed on the first lifting seat 2012, and the second lifting seat 2022 is disposed on the second lifting rail 2021. The second lifting drive 2023 can drive the second lifting seat 2022 to move along the second lifting rail 2021. The floating component 204 may include a floating track 2041 and a floating mounting base 2042. The floating track 2041 is disposed on the second lifting base 2022, and the floating mounting base 2042 is movably disposed on the floating track 2041. The rotation drive component 203 may be disposed on the floating mounting base 2042, so that when the feeding rod 20 moves up and down, the rotation drive component 203 can float on the floating track 2041, ensuring the stability of the powder feeding component 100. It should be noted that the rotation drive component 203 may be driven to rotate the feeding rod 20 by a rotary motor, a rotary cylinder, etc., and the first lifting drive component 2013 and the second lifting drive component 2023 may be driven to lift by a screw motor, a cylinder, a hydraulic cylinder, etc., which are not limited here.

[0069] In some embodiments, such as Figure 3 As shown, the first lifting seat 2012 may be provided with a claw 2014 capable of clamping the powder filling component 100, so that the powder filling component 100 can be clamped by the claw 2014 on the first lifting seat 2012 to realize the connection between the powder filling component 100 and the first lifting seat 2012.

[0070] In some embodiments, such as Figures 5 to 8 As shown, the powder feeding assembly 100 may further include a feed rod mounting base 40. The feed rod 20 is rotatably inserted into the feed rod mounting base 40, and the feed rod 20 is movable along the axial direction of the feed rod mounting base 40. Simultaneously, the feed rod mounting base 40 is connected and fixedly connected to the hopper 10. Furthermore, as... Figure 6 and Figure 8 As shown, the material rod mounting base 40 may be provided with a slot 43 that cooperates with the claw 2014 on the first lifting base 2012. At the same time, the material rod mounting base 40 may be provided with a magnetic suction component that can be attracted to the first lifting base 2012, thereby ensuring the reliability of the connection between the powder feeding component 100 and the first lifting base 2012.

[0071] like Figure 5 and Figure 7As shown, the powder adding assembly 100 may further include an elastic assembly 50. The elastic assembly 50 includes an elastic element 51 and an elastic element mounting base 52. It should be noted that the elastic element 51 may be a spring.

[0072] In some embodiments, such as Figure 5 As shown, one or more elastic elements 51 can be used. When one elastic element 51 is used, the elastic element 51 can be sleeved on the feeding rod 20, and the two ends of the elastic element 51 are compressed between the protrusion 21 and the feeding rod mounting seat 40 through the elastic element mounting seat 52, so as to provide a large downward pressure to the protrusion 21 and prevent the feeding rod 20 from being lifted when too much powder accumulates at the powder outlet 341 of the powder feeding head 30, thereby causing the guide surface 211 of the protrusion 21 to separate from the guide part 11, resulting in the feeding rod 20 spinning freely. Of course, two, three or more elastic elements 51 can also be used, and each elastic element 51 is arranged around the feeding rod 20. At the same time, one end of each elastic element 51 can abut against the bottom wall of the feeding rod mounting seat 40 through the elastic element mounting seat 52, and the other end of each elastic element 51 can abut against the side of the protrusion 21 that is away from the guide surface 211, so that each elastic element 51 is compressed between the protrusion 21 and the feeding rod mounting seat 40. Thus, multiple elastic elements 51 can provide a large downward pressure to the protrusion 21, preventing the feeding rod 20 from being lifted when too much powder accumulates at the powder outlet 341 of the powder feeding head 30, thereby causing the guide surface 211 of the protrusion 21 to separate from the guide part 11, resulting in the feeding rod 20 spinning freely.

[0073] In some embodiments, such as Figure 7 As shown, one elastic element 51 can be used, and the elastic element 51 can be sleeved on the feeding rod 20. Both ends of the elastic element 51 can be compressed between the hopper 10 and the feeding rod mounting base 40 via the elastic element mounting base 52. Specifically, one end of the elastic element 51 can be fixed to the feeding rod 20 via the elastic element mounting base 52, that is, the elastic element mounting base 52 is fixed to the feeding rod 20, and one end of the elastic element 51 is mounted on the elastic element mounting base 52 of the feeding rod 20. Simultaneously, the other end of the elastic element 51 can be fixed to the hopper 10 via the elastic element mounting base 52, that is, the elastic element mounting base 52 can be fixed to the hopper 10, and the other end of the elastic element 51 can be mounted on the elastic element mounting base 52 of the hopper 10, for feeding... The rod 20 can move up and down along the inner hole of the elastic element mounting seat 52 of the hopper 10. When the output shaft of the rotation drive 203 is connected to the feeding rod 20, the rotation drive 203 can drive the feeding rod 20 to move down when it moves down. This causes the elastic element mounting seat 52 on the feeding rod 20 to compress the elastic element 51. When the rotation drive 203 moves up, the feeding rod 20 can quickly move upward and reset under the action of the elastic force of the elastic element 51.

[0074] In some embodiments, such as Figure 7 As shown, a pressing part 26 can be fixed on the feeding rod 20, and both ends of the elastic element 51 can be compressed between the pressing part 26 and the feeding rod mounting base 40 through the elastic element mounting base 52. That is, one end of the elastic element 51 can abut against the pressing part 26 through the elastic element mounting base 52, while the other end of the elastic element 51 can be fixed to the hopper 10 through the elastic element mounting base 52. That is, the elastic element mounting base 52 can be fixed to the hopper 10, and the other end of the elastic element 51 can be installed on the elastic element mounting base 52 of the hopper 10. The feed rod 20 can move up and down along the inner hole of the elastic element mounting seat 52 of the hopper 10. When the output shaft of the rotary drive 203 is connected to the feed rod 20, the rotary drive 203 can drive the feed rod 20 to move down when it moves down. This causes the pressing part 26 on the feed rod 20 to compress the elastic element 51 through the elastic element mounting seat 52. When the rotary drive 203 moves up, the feed rod 20 can quickly move upward and reset under the action of the elastic force of the elastic element 51.

[0075] In some embodiments, such as Figure 5 and Figure 7 As shown, the powder feeding assembly 100 may be provided with a mounting cavity 60 for accommodating the elastic component 50 and / or the protrusion 21, and the material rod mounting base 40 has a first cavity 41, the hopper 10 has a second cavity 12 and a powder cavity 13, the second cavity 12 and the powder cavity 13 may be separated by a partition plate 14 so that the powder can be stored in the powder cavity 13, thereby effectively preventing the powder in the powder cavity 13 from flying into the second cavity 12, thereby affecting the feeding action of the feeding rod 20, ensuring the stability of the powder feeding assembly 100, and the guide part 11 may be provided on the partition plate 14. Furthermore, the mounting cavity 60 may include at least a first cavity 41 and a second cavity 12, that is, the mounting cavity 60 may be composed of a first cavity 41 and a second cavity 12, that is, the material rod mounting seat 40 and the material bin 10 are tightly fitted together. Of course, there may also be a gap between the material rod mounting seat 40 and the material bin 10, that is, the mounting cavity 60 may be composed of a first cavity 41, a second cavity 12 and the gap between the material rod mounting seat 40 and the material bin 10.

[0076] In some embodiments, such as Figure 5 and Figure 7 As shown, a bushing 24 can be fitted on the feeding rod 20 so that the feeding rod 20 can be rotatably engaged with the feeding rod mounting base 40 through the bushing 24, and the radial direction of the feeding rod 20 can be limited to ensure the stability of the feeding of the feeding rod 20.

[0077] In some embodiments, such as Figures 5 to 8As shown, the feed rod 20 may be provided with a connector 25 that can be connected to the rotary drive 203, and the connector 25 can be bolted to the end face of the feed rod 20 away from the powder outlet 341. Simultaneously, a "I"-shaped connecting groove is provided on the connector 25 that can mate with the output shaft of the rotary drive 203. When the feed rod 20 is connected to the rotary drive 203, the output shaft of the rotary drive 203 can be inserted into the connecting groove, thereby driving the feed rod 20 to rotate via the rotary drive 203. Furthermore, a countersunk hole 42 that mates with the connector 24 is provided on the feed rod mounting base 40. The inner diameter of the countersunk hole 42 is not less than the outer diameter of the connector 25, so that when the feed rod 20 moves up and down, the connector 25 can move up and down within the countersunk hole 42.

[0078] In some embodiments, such as Figure 5 and Figure 7 As shown, to facilitate the installation between the rod mounting base 40 and the hopper 10, a positioning ring 80 can be provided between the rod mounting base 40 and the hopper 10. A first limiting part 411 can be provided in the first cavity 41 of the rod mounting base 40, and a second limiting part 121 can be provided in the second cavity 12 of the hopper 10, so that the positioning ring 80 can be located between the first limiting part 411 and the second limiting part 121. Thus, the positioning ring 80 can be axially limited by the first limiting part 411 and the second limiting part 121, and the radial installation position between the rod mounting base 40 and the hopper 10 can be positioned by the positioning ring 80, so as to fix the rod mounting base 40 and the hopper 10 in place.

[0079] In some embodiments, such as Figure 5 and Figure 7 As shown, the feeding rod 20 may also be provided with one or more stirring parts 23. The stirring part 23 may have a hollow area 231 for the powder to pass through, so as to reduce the resistance to the rotation of the stirring part 23. When the feeding rod 20 rotates, it can drive the stirring part 23 to rotate synchronously, thereby reducing the risk of powder sticking to the wall and ensuring the smoothness and stability of powder output.

[0080] In some embodiments, such as Figure 5 and Figure 7 As shown, the mixing unit 23 may include a first mixing unit and a second mixing unit arranged along the axial direction of the feeding rod 20. The first mixing unit may be located within the powder chamber 13 of the hopper 10 and may have a rectangular structure adapted to the powder chamber 13. The second mixing unit may be located within the powder feeding head 30 and may have a conical structure adapted to the powder feeding head 30. Simultaneously, one or more first mixing units and one or more second mixing units may be arranged along the circumferential direction of the feeding rod 20, thereby ensuring the uniformity of the powder mixed by the mixing unit 23.

[0081] In some embodiments, such as Figures 5 to 8 As shown, the powder dispensing assembly 100 may also include a cover 70. The cover 70 may be detachably connected to the hopper 10, and the cover 70 may have a receiving cavity for accommodating the powder dispensing head 30, so that the cover 70 can protect the powder dispensing head 30.

[0082] In some embodiments, such as Figure 6 and Figure 8 As shown, the cover 70 can be provided with multiple positioning posts 71 that cooperate with the hopper 10. That is, the positioning posts 71 can be two, three, four or more. At the same time, the hopper 10 can be provided with positioning holes that cooperate with the positioning posts 71, so that the positioning ball head at the end of the positioning post 71 can be inserted into the positioning hole, thereby realizing the installation and positioning of the cover 70 and the hopper 10.

[0083] In some embodiments, the cover 70 and the hopper 10 can be connected by magnetic attraction, and the cover 70 can be provided with an installation groove, so that the magnetic component can be fixed in the installation groove, so that the magnetic component can be attracted to the bottom wall of the locking nut 31, thereby realizing the connection between the cover 70 and the hopper 10.

[0084] In some embodiments, such as Figure 3 and Figure 4 As shown, the powder adding mechanism may also include a cap removal assembly 500. The cap removal assembly 500 may include a cap removal drive 501 and an insert plate 502. The cap removal drive 501 can drive the insert plate 502 to move toward or away from the cap body 70, while the cap body 70 is provided with a slot 72 that can cooperate with the insert plate 502. When it is necessary to remove the cover 70 of the powder feeding assembly 100, the first lifting assembly 201 drives the powder feeding assembly 100 to move towards the weighing assembly 300 until the insert plate 502 can be inserted into the slot 72 of the cover 70. At this time, the cover removal drive 501 can drive the insert plate 502 to move towards the cover 70, so that the insert plate 502 is inserted into the slot 72 of the cover 70. Then, the first lifting assembly 201 drives the powder feeding assembly 100 to overcome the magnetic attraction between the cover 70 and the hopper 10 and move away from the weighing assembly 300, so that the cover 70 can be separated from the hopper 10. At the same time, the cover removal drive 501 can drive the insert plate 502 with the cover 70 back to the initial position to remove the cover 70 of the powder feeding assembly 100.

[0085] In some embodiments, in order to ensure the reliability of the connection between the cover 70 and the insert plate 502, a magnetic attraction element that can be attracted to the insert plate 502 may be provided on the cover 70, thereby ensuring the reliability of the connection between the cover 70 and the insert plate 502.

[0086] In some embodiments, the cover removal drive 501 may include a slide rail, a lead screw motor, and a slide block. The slide block may be disposed on the slide rail, the insert plate 502 may be mounted on the slide block, and the lead screw motor may drive the slide block to move along the slide rail toward or away from the cover 70, thereby causing the insert plate 502 to move toward or away from the cover 70. It should be noted that the cover removal drive 501 may also drive the slide block to move along the slide rail via a cylinder, hydraulic cylinder, or the like; this is not limited to these methods here.

[0087] In some embodiments, such as Figure 3 and Figure 4 As shown, the powder adding mechanism may also include a cleaning component 400 capable of cleaning the surface of the weighing component 300. The cleaning component 400 may include a cleaning plate 401, a collection container, and a negative pressure drive. The cleaning plate 401 may be located below the insert plate 502 and fixed to a slide block, allowing the cleaning plate 401 to move synchronously with the insert plate 502. Simultaneously, multiple adsorption holes are provided on the side of the cleaning plate 401 near the weighing component 300, enabling the adsorption holes to adsorb residual powder on the weighing component 300 into the collection container under the negative pressure generated by the negative pressure drive. This improves powder adding efficiency while ensuring the accuracy of experimental results and the stability of product quality. It should be noted that the negative pressure drive can be a negative pressure pump, etc.

[0088] In some embodiments, such as Figure 1 and Figure 2 As shown, the powder adding mechanism may further include a feeding mechanism 600 and a feeding rack 700. The feeding rack 700 can be used to store multiple powder adding components 100. The feeding mechanism 600 may include a moving component and a moving gripper 601. The moving component can drive the moving gripper 601 to move in the X, Y, and Z directions, thereby gripping the weighing boat 800 onto the weighing component 300 and moving the powder adding components 100 on the feeding rack 700 above the weighing component 300, so that the powder adding components 100 can add powder into the weighing boat 800 for weighing under the drive of the powder adding drive component 200.

[0089] In some embodiments, the moving component may include an X-track arranged along the X direction, a Y-track arranged along the Y direction, and a Z-track arranged along the Z direction. The Y-track can be mounted on the X-track via an X-slide block, allowing it to move along the X-track. Similarly, the Z-track can be mounted on the Y-track via a Y-slide block, allowing it to move along the Y-track. Simultaneously, the moving gripper 601 can be mounted on the Z-track via a Z-slide block, allowing it to move along the Z-track. Thus, the X-track, Y-track, and Z-track can cooperate to enable the moving gripper 601 to move in the X, Y, and Z directions. It should be noted that the moving component can be driven by a lead screw motor, cylinder, or hydraulic cylinder, etc., to move the X-slide block, Y-slide block, and Z-slide block; this is not limited to these methods herein.

[0090] In some embodiments, such as Figure 2 As shown, the movable gripper 601 can be respectively provided with a clamping port that can grip the weighing boat 800 and the powder adding component 100, so that the weighing boat 800 and the powder adding component 100 can be gripped respectively through one movable gripper 601, thereby reducing the number of movable grippers 601, saving equipment costs, and reducing the space occupied by the equipment.

[0091] In some embodiments, such as Figure 2 As shown, the feeding mechanism 600 may further include a transfer component 602, which transports the powder feeding component 100 and the weighing boat 800. Specifically, the movable gripper 601 places the powder feeding component 100 on the transfer component 602 onto the feeding rack 700 and moves the weighing boat 800 on the transfer component 602 onto the weighing component 300. Simultaneously, the movable gripper 601 moves the weighing boat 800 containing powder back onto the transfer component 602, and the transfer component 602 then transports the weighing boat 800 containing powder to the dispensing station of the mobile phase preparation equipment.

[0092] In some embodiments, the powder feeding mechanism may be provided with a transfer transition chamber, and the transfer component 602 may be located in the transfer transition chamber. The transfer transition chamber has a feeding window that can extend from the transfer component 602. When the transfer component 602 extends from one of the feeding windows of the transfer transition chamber, the operator can place the powder feeding component 100 and the weighing boat 800 on the transfer component 602. At this time, the transfer component 602 can extend from the other feeding window of the transfer transition chamber, and the moving gripper 601 places the powder feeding component 100 on the transfer component 602 onto the feeding rack 700, and moves the weighing boat 800 on the transfer component 602 onto the weighing component 300. At the same time, the transfer transition chamber also has a discharge window opposite to the dispensing station of the mobile phase preparation equipment, so that the weighing boat 800 containing powder can be transferred to the dispensing station of the mobile phase preparation equipment by the transfer component 602.

[0093] In some embodiments, such as Figure 2 As shown, the transfer assembly 602 may include a pallet 6021 and a transfer drive. The transfer drive can move the pallet 6021 between the two feeding windows and simultaneously rotate the pallet 6021 to the discharge window. Limiting grooves may be provided on the pallet 6021 for placing the powder adding assembly 100 and the weighing boat 800, respectively, to prevent the powder adding assembly 100 and the weighing boat 800 from tipping over during the movement of the pallet 6021.

[0094] In some embodiments, the transfer drive may include a moving drive, a rotating drive, and a telescopic drive. The moving drive may be mounted on the rotating drive to enable the rotating drive to rotate the moving drive. The telescopic drive may be disposed on the moving drive to enable the moving drive to move the telescopic drive. Simultaneously, a pallet may be mounted on the telescopic drive to enable the telescopic drive to extend or retract the pallet. It should be noted that the moving drive may be driven by a lead screw motor, cylinder, or hydraulic cylinder, etc.; the rotating drive may be driven by a rotary motor, rotary cylinder, etc.; and the telescopic drive may be driven by a telescopic cylinder, telescopic hydraulic cylinder, etc. No limitation is made herein.

[0095] The powder feeding mechanism disclosed in this application provides a powder feeding head 30 at the opening of the hopper 10, and a feeding rod 20 is rotatably disposed within the hopper 10. This allows the powder feeding drive assembly 200 to drive the powder feeding assembly 100 to the position of the weighing assembly 300 and drive the feeding rod 20 to rotate. The powder in the hopper 10 is then fed from the powder feeding head 30 to the weighing assembly 300 for weighing via the feeding rod 20. Simultaneously, a cleaning assembly 400 can clean any residual powder from the surface of the weighing assembly 300.

[0096] The powder adding mechanism disclosed in this application, through the cooperation of the powder adding drive component 200 and the powder adding component 100, can realize automatic powder adding, avoiding the measurement deviation caused by manual adding. At the same time, the residual powder on the surface of the balancing component 300 can be cleaned by the cleaning component 400, thereby improving the powder adding efficiency while ensuring the accuracy of experimental results and the stability of product quality.

[0097] This application also discloses a mobile phase preparation device, which includes the powder feeding mechanism disclosed in the above embodiments. Therefore, it has all the technical effects of the powder feeding mechanism described above, and will not be repeated here.

[0098] In some embodiments, the mobile phase preparation equipment may include a robotic arm and a dispensing station, thereby moving the powder provided by the powder feeding mechanism to the dispensing station via the robotic arm, thereby providing powder raw materials to the solution prepared by the mobile phase preparation equipment.

[0099] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather not listed.

[0100] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A powder-adding mechanism, characterized in that, It includes a powder dispensing component (100), a powder dispensing drive component (200), and a weighing component (300), wherein: The powder feeding assembly (100) includes a hopper (10) with an opening and a feeding rod (20) rotatably disposed in the hopper (10). A powder feeding head (30) is provided at the opening of the hopper (10). The powder feeding drive assembly (200) is used to drive the powder feeding assembly (100) to the position of the weighing assembly (300) and drive the feeding rod (20) to rotate so that the feeding rod (20) can feed the powder in the hopper (10) out through the powder feeding head (30); The weighing component (300) is used to weigh the powder delivered by the powder adding component (100).

2. The powder feeding mechanism according to claim 1, characterized in that, The feeding rod (20) is provided with a protrusion (21), the protrusion (21) has an inclined guide surface (211), and the hopper (10) is provided with a guide part (11). The guide surface (211) and the guide part (11) are slidably engaged, so that the feeding rod (20) can move along the axial direction of the hopper (10) and squeeze the powder in the hopper (10) out through the powder feeding head (30); or, The feeding rod (20) is provided with a conveying part (22) for conveying powder in the hopper (10), and the conveying part (22) is a spiral structure.

3. The powder feeding mechanism according to claim 2, characterized in that, The top surface of the guide portion (11) is a spherical surface that slides in conjunction with the guide surface (211); or, The guide portion (11) is provided with balls that slide in cooperation with the guide surface (211).

4. The powder feeding mechanism according to claim 2, characterized in that, The powder feeding assembly (100) also includes a feed rod mounting base (40), the feed rod (20) is rotatably mounted on the feed rod mounting base (40), and the feed rod mounting base (40) is connected to the hopper (10).

5. The powder feeding mechanism according to claim 4, characterized in that, The powder adding assembly (100) further includes an elastic component (50), which includes an elastic element (51) and an elastic element mounting base (52). The two ends of the elastic element (51) are compressed between the protrusion (21) and the material rod mounting seat (40) through the elastic element mounting seat (52), or the two ends of the elastic element (51) are compressed between the hopper (10) and the material rod mounting seat (40) through the elastic element mounting seat (52).

6. The powder feeding mechanism according to claim 5, characterized in that, The powder feeding assembly (100) is provided with a mounting cavity (60) for accommodating the elastic component (50) and / or the protrusion (21), the material rod mounting seat (40) has a first cavity (41), the hopper (10) has a second cavity (12) and a powder cavity (13) for accommodating the powder, a partition plate (14) is provided between the second cavity (12) and the powder cavity (13), and the mounting cavity (60) includes at least the first cavity (41) and the second cavity (12).

7. The powder feeding mechanism according to claim 1, characterized in that, The powder feeding assembly (100) also includes a cover (70) which is detachably connected to the hopper (10) and has a receiving cavity for accommodating the powder feeding head (30).

8. The powder feeding mechanism according to claim 7, characterized in that, The cover (70) is provided with a plurality of positioning posts (71) for cooperating with the hopper (10); and / or, The cover (70) is magnetically connected to the hopper (10), and the cover (70) is provided with an installation groove for placing magnetic components.

9. The powder feeding mechanism according to claim 7 or 8, characterized in that, It also includes a cover removal assembly (500), which includes a cover removal drive (501) and a plug plate (502). The cover removal drive (501) is used to drive the plug plate (502) to move toward or away from the cover (70), and the cover (70) is provided with a slot (72) for engaging with the plug plate (502).

10. The powder feeding mechanism according to claim 9, characterized in that, It also includes a cleaning assembly (400) for cleaning the surface of the weighing assembly (300). The cleaning assembly (400) includes a cleaning plate (401), a collection container and a negative pressure drive. The cleaning plate (401) is located below the insert plate (502) and can move synchronously with the insert plate (502). The cleaning plate (401) is provided with a plurality of adsorption holes on the side of the cleaning plate (401) near the weighing assembly (300) so that the adsorption holes can adsorb the residual powder on the weighing assembly (300) into the collection container under the negative pressure generated by the negative pressure drive.

11. The powder feeding mechanism according to claim 1, characterized in that, The powder adding drive assembly (200) includes a first lifting assembly (201), a second lifting assembly (202), a rotation drive component (203), and a floating component (204). The first lifting component (201) is used to drive the powder feeding component (100) to move toward or away from the weighing component (300), the second lifting component (202) is used to drive the rotation drive component (203) to move toward or away from the powder feeding component (100), so that the rotation drive component (203) can drive the feeding rod (20) to rotate or disengage from the feeding rod (20), and the floating component (204) is used to drive the rotation drive component (203) to float toward or away from the powder feeding component (100).

12. The powder feeding mechanism according to claim 11, characterized in that, The first lifting assembly (201) includes a first lifting rail (2011), a first lifting seat (2012), and a first lifting drive (2013). The first lifting seat (2012) is disposed on the first lifting rail (2011), and the first lifting drive (2013) is used to drive the first lifting seat (2012) to move along the first lifting rail (2011). The powder adding assembly (100) is used to connect with the first lifting seat (2012). The second lifting assembly (202) includes a second lifting rail (2021), a second lifting seat (2022), and a second lifting drive (2023). The second lifting rail (2021) is disposed on the first lifting seat (2012), and the second lifting seat (2022) is disposed on the second lifting rail (2021). The second lifting drive (2023) is used to drive the second lifting seat (2022) to move along the second lifting rail (2021). The floating component (204) includes a floating track (2041) and a floating mounting base (2042). The floating track (2041) is disposed on the second lifting base (2022), and the floating mounting base (2042) is movably disposed on the floating track (2041). The rotation drive component (203) is disposed on the floating mounting base (2042).

13. The powder feeding mechanism according to claim 1, characterized in that, The powder feeding head (30) and the hopper (10) are an integral structure; or, The powder feeding head (30) is connected to the hopper (10) by a locking nut (31).

14. The powder feeding mechanism according to claim 13, characterized in that, The outer wall of the powder feeding head (30) extends toward the center of the powder feeding head (30) to form a positioning groove (32). The opening of the hopper (10) is provided with a plug end (15) for inserting into the positioning groove (32). The plug end (15) is provided with a threaded part (151) for cooperating with the locking nut (31). The locking nut (31) is used to abut against the bottom wall of the positioning groove (32) on the side away from the plug end (15).

15. The powder feeding mechanism according to claim 1, characterized in that, The feeding rod (20) is also provided with one or more stirring parts (23), and the stirring part (23) has a hollow area (231) for the powder to pass through.

16. The powder feeding mechanism according to claim 1, characterized in that, It also includes a feeding mechanism (600) and a feeding rack (700), the feeding rack (700) being used to place the powder adding component (100), the feeding mechanism (600) including a movable gripper (601), the movable gripper (601) being used to grip the weighing boat (800) onto the weighing component (300) and move the powder adding component (100) on the feeding rack (700) above the weighing component (300), so that under the drive of the powder adding drive component (200), the powder in the powder adding component (100) is added into the weighing boat (800).

17. The powder feeding mechanism according to claim 16, characterized in that, The feeding mechanism (600) further includes a transfer component (602), which is used to transport the powder feeding component (100) and the weighing boat (800). The movable gripper (601) is used to place the powder feeding component (100) on the transfer component (602) onto the feeding rack (700) and move the weighing boat (800) on the transfer component (602) to the weighing component (300). The movable gripper (601) can move the weighing boat (800) containing powder back to the transfer component (602) and transfer the weighing boat (800) containing powder to the dispensing station of the mobile phase preparation equipment through the transfer component (602).

18. A mobile phase preparation apparatus, characterized in that, Includes the powder-adding mechanism as described in any one of claims 1 to 17.

19. The mobile phase preparation apparatus according to claim 18, characterized in that, It includes a robotic arm and a batching station, wherein the robotic arm is used to move the powder provided by the powder adding mechanism to the batching station.

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