Liquid reagent dispensing device

Abstract

A liquid reagent dispensing device includes a tub assembly and a dispensing assembly. The barrel assembly comprises a first pipeline and a second pipeline which are suitable for being communicated with a reagent barrel containing a liquid reagent and outputting the liquid reagent respectively. The distribution assembly comprises a first roller and a second roller which are respectively arranged corresponding to the first pipeline and the second pipeline, and a driving module connected with the first roller and the second roller; the driving module is suitable for driving the first roller and the second roller to move so that the first roller extrudes the first pipeline to control the first flow speed of the liquid reagent in the first pipeline, and the second roller extrudes the second pipeline to control the second flow speed of the liquid reagent in the second pipeline. The liquid reagent in the reagent barrel is output through the first pipeline and the second pipeline which are communicated with the reagent barrel, and the first flow velocity and the second flow velocity of the liquid reagent output by the first pipeline and the second pipeline are respectively controlled through the first roller and the second roller, so that the output liquid reagent can be accurately metered.

Description

Technical Field

[0001] The present invention relates to the technical field of filling, and particularly to a liquid reagent dispensing device. Background Art

[0002] A liquid filling device is a device for quantitatively filling bottled or barreled liquid reagents. According to different requirements, it is usually necessary to quantitatively fill bottles or barrels of different dosage specifications, and accurately measure the amount of liquid filled. However, how to accurately control the amount of liquid filled is an urgent problem to be solved. Summary of the Invention

[0003] An embodiment of the present invention provides a liquid reagent dispensing device. The liquid reagent dispensing device outputs and distributes the liquid reagent in the reagent barrel to the reagent bottle through a first pipeline and a second pipeline communicated with the reagent barrel, and respectively controls the first flow rate and the second flow rate of the liquid reagent output by the first pipeline and the second pipeline through a first roller and a second roller, so that the liquid reagent output to the reagent bottle can be accurately measured.

[0004] For this reason, the embodiment of the present invention provides the following technical solutions:

[0005] A liquid reagent dispensing device includes: a barrel assembly, which includes a first pipeline and a second pipeline adapted to communicate with a reagent barrel containing a liquid reagent and adapted to respectively output the liquid reagent; a dispensing assembly, which includes a first roller and a second roller respectively arranged corresponding to the first pipeline and the second pipeline, and a driving module connected to the first roller and the second roller; wherein, the driving module is adapted to drive the first roller and the second roller to move to control the first flow rate of the liquid reagent in the first pipeline by squeezing the first pipeline through the first roller, and control the second flow rate of the liquid reagent in the second pipeline by squeezing the second pipeline through the second roller.

[0006] Optionally, the barrel assembly further includes the reagent barrel.

[0007] Optionally, the output process of the liquid reagent includes a first stage and a second stage adjacent in time; the first roller is adapted to squeeze the first pipeline in the first stage to control the first flow rate to gradually decrease; the second roller is adapted to squeeze the second pipeline in the second stage to control the second flow rate to gradually decrease; the decreasing speed of the second speed is less than the decreasing speed of the first speed.

[0008] Optionally, the first roller and the second roller are adapted to move simultaneously, and the movement trajectory of the first roller in the vertical plane is a broken line, and the movement trajectory of the second roller in the vertical plane is a straight line inclined upward or downward.

[0009] Optionally, the broken line includes a first straight line segment and a second straight line segment that are adjacent and respectively correspond to the first stage and the second stage; the first straight line segment is a straight line segment that slopes upward or downward; the second straight line segment is a straight line segment parallel to the vertical direction.

[0010] Optionally, the diameter of the first pipeline is greater than the diameter of the second pipeline; the diameter of the first roller is greater than the diameter of the second roller.

[0011] Optionally, the driving module further includes a first shaft passing through the first roller, a second shaft passing through the second roller, a pair of first tracks respectively limiting the two ends of the first shaft, and a pair of second tracks respectively limiting the two ends of the second shaft; the first track is a broken line track; the second track is a straight line track that slopes upward or downward; the broken line track includes adjacent first straight line track and second straight line track; the first straight line track is a straight line track that slopes upward or downward; the second straight line track is a straight line track parallel to the vertical direction.

[0012] Optionally, the driving module further includes a pair of third tracks suitable for respectively limiting the two ends of the first shaft, and a pair of fourth tracks suitable for respectively limiting the two ends of the second shaft; both the third track and the fourth track are straight line tracks; the straight line tracks are parallel to the horizontal direction.

[0013] Optionally, the driving module further includes a driving unit connected to the third track and the fourth track; the driving unit is suitable for driving the third track and the fourth track to vertically lift and lower so that the first shaft and the second shaft respectively move along the first track, the third track, the second track, and the fourth track while vertically lifting and lowering with the third track and the fourth track.

[0014] Optionally, the first pipeline and the second pipeline are suitable for outputting the liquid reagent into the reagent bottle; the liquid reagent dispensing device further includes a weighing module located below the reagent bottle, and a control module respectively connected to the weighing module and the driving module; the weighing module is suitable for measuring the dosage of the liquid reagent output into the reagent bottle; the control module is suitable for controlling the first flow rate and the second flow rate through the driving module based on the dosage.

[0015] Optionally, the liquid reagent dispensing device further includes a bucket support; the reagent bucket is supported on the bucket support and the first pipeline and the second pipeline are respectively arranged corresponding to the first roller and the second roller.

[0016] Optionally, the reagent barrel has a barrel opening adapted to output the liquid reagent; the barrel assembly further includes a connector installed at the barrel opening of the reagent barrel; the first pipeline and the second pipeline are respectively fixedly installed on the connector.

[0017] Compared with the prior art, the technical solution of the embodiment of the present invention has beneficial effects.

[0018] For example, the present invention outputs the liquid reagent in the reagent barrel and distributes it into the reagent bottle through the first pipeline and the second pipeline communicated with the reagent barrel, and respectively controls the first flow rate and the second flow rate of the liquid reagent output by the first pipeline and the second pipeline through the first roller and the second roller, so that the liquid reagent output into the reagent bottle can be accurately metered.

[0019] For another example, the present invention divides the output process of the liquid reagent into a first stage and a second stage adjacent in time, and makes the first roller squeeze the first pipeline in the first stage to control the first flow rate to gradually decrease, and makes the second roller squeeze the second pipeline in the second stage to control the second flow rate to gradually decrease, while controlling the decreasing speed of the second flow rate to be less than the decreasing speed of the first flow rate, so as to more accurately control the output dose of the liquid reagent.

[0020] For another example, by designing different movement trajectories for the first roller and the second roller, the present invention realizes using one drive module to drive the first roller and the second roller to work in different stages respectively, which not only saves the power source, but also simplifies the structural design and is beneficial to cost saving.

[0021] For another example, the present invention separately sets the distribution assembly and the barrel assembly independently, avoiding the pollution and harm to the distribution assembly during the liquid reagent transportation process, not only ensuring the use safety of the distribution assembly, but also avoiding the extra cleaning work caused by pollution. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the liquid reagent distribution device in the embodiment of the present invention;

[0023] Figure 2 is a cross-sectional view of the liquid reagent distribution device in the embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of the barrel assembly in the embodiment of the present invention;

[0025] Figure 4 is a cross-sectional view of the barrel assembly in the embodiment of the present invention;

[0026] Figure 5 is a partial schematic diagram of the barrel assembly in the embodiment of the present invention;

[0027] Figure 6It is a cross-sectional view of the dispensing component in the embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the first roller and the second roller in the first position in the embodiment of the present invention;

[0029] Figure 8 It is another schematic diagram of the first roller and the second roller in the first position in the embodiment of the present invention;

[0030] Figure 9 It is a schematic diagram of the first roller and the second roller in the second position in the embodiment of the present invention;

[0031] Figure 10 It is another schematic diagram of the first roller and the second roller in the second position in the embodiment of the present invention;

[0032] Figure 11 It is a schematic diagram of the first roller and the second roller in the third position in the embodiment of the present invention;

[0033] Figure 12 It is another schematic diagram of the first roller and the second roller in the third position in the embodiment of the present invention.

[0034] Explanation of reference numerals:

[0035] 1 Liquid reagent dispensing device, 10 Bucket assembly, 11 First pipeline, 11a Input end of the first pipeline, 12 Second pipeline, 12a Input end of the second pipeline, 13 Reagent bucket, 13a Reagent bucket opening, 14 Connector, 14a Interface part, 14b Internal thread, 15 Valve switch, 151 Pressing part, 152 Spring, 153 Control part, 20 Dispensing component, 21 First roller, 22 Second roller, 23 Driving module, 231 First shaft, 232 Second shaft, 233 Driving unit, 2331 Motor, 2332 Screw rod, 2333 Nut, 2334 Guide post, 2335 Driving connector, 2341 First track, 2342 Second track, 2343 Third track, 2344 Fourth track, 235 Dispensing component frame, 30 Bucket bracket, 40 Limiting part, 41 Limiting groove. Detailed implementation manners

[0036] To make the objectives, features and beneficial effects of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. It can be understood that the following described detailed implementation manners are only used to explain the present invention, rather than limiting the present invention. And descriptions of the same or similar components in different embodiments may be omitted, as well as descriptions of components, features, effects, etc. belonging to the prior art.

[0037] In addition, for ease of description, only parts related to the present invention rather than all structures are shown in the drawings. Moreover, the same or similar reference numerals may be used in the drawings to refer to the same or similar components in different embodiments.

[0038] Referring Figures 1 to 12 , an embodiment of the present invention provides a liquid reagent dispensing device 1.

[0039] Specifically, the liquid reagent dispensing device 1 includes a barrel assembly 10 and a dispensing assembly 20. Among them, the barrel assembly 10 includes a first pipeline 11 and a second pipeline 12 that are adapted to communicate with a reagent barrel 13 for accommodating liquid reagents and are adapted to respectively output the liquid reagents in the reagent barrel 13; the dispensing assembly 20 includes a first roller 21 and a second roller 22 respectively provided corresponding to the first pipeline 11 and the second pipeline 12, and a driving module 23 connected to the first roller 21 and the second roller 22.

[0040] In a specific implementation, the driving module 23 is adapted to drive the first roller 21 and the second roller 22 to move to control the first flow rate of the liquid reagent in the first pipeline 11 by squeezing the first pipeline 11 through the first roller 21 and control the second flow rate of the liquid reagent in the second pipeline 12 by squeezing the second pipeline 12 through the second roller 22.

[0041] In the embodiment of the present invention, the liquid reagents in the reagent barrel 13 are output and dispensed into a reagent bottle through the first pipeline 11 and the second pipeline 12 that communicate with the reagent barrel 13, and the first flow rate and the second flow rate of the reagents output from the first pipeline 11 and the second pipeline 12 are respectively controlled by the first roller 21 and the second roller 22, so that the liquid reagents output into the reagent bottle can be accurately measured.

[0042] In some embodiments, the barrel assembly 10 may further include a reagent barrel 13.

[0043] Referring Figure 2 , the reagent barrel 13 has a reagent barrel opening 13a that communicates with the first pipeline 11 and the second pipeline 12 to be adapted to output liquid reagents to the first pipeline 11 and the second pipeline 12.

[0044] Referring Figures 2 to 4 , in some embodiments, the barrel assembly 10 further includes a connecting member 14 installed at the reagent barrel opening 13a.

[0045] In some embodiments, the upper end of the connecting member 14 may include an interface portion 14a.

[0046] In some embodiments, the interface portion 14a may have an internal thread 14b. Correspondingly, the reagent barrel opening 13a has an external thread. The connecting member 14 is installed at the reagent barrel opening 13a by threadedly connecting the interface portion 14a with the reagent barrel opening 13a.

[0047] Furthermore, the first pipeline 11 and the second pipeline 12 can be fixedly installed on the connector 14 respectively.

[0048] Specifically, the input end 11a of the first pipeline 11 and the input end 12a of the second pipeline 11 can be fixedly connected to the upper end of the connector 14 respectively. At the same time, the output ends of the first pipeline 11 and the second pipeline 12 can be fixedly connected to the lower end of the connector 14 respectively, so as to fixedly install the first pipeline 11 and the second pipeline 12 on the connector 14 respectively.

[0049] In the embodiment of the present invention, fixedly installing the first pipeline 11 and the second pipeline 12 on the connector 14 respectively can prevent the first pipeline 11 and the second pipeline 12 from moving during the liquid transportation process.

[0050] In specific implementation, the input end 11a of the first pipeline 11 and the input end 12a of the second pipeline 12 are also communicated with the reagent barrel 13 at the reagent barrel opening 13a respectively, so as to be suitable for the liquid reagent in the reagent barrel 13 to be transported to the reagent bottle through the first pipeline 11 and the second pipeline 12.

[0051] In some embodiments, the lower end of the connector 14 also has a first hole and a second hole respectively communicated with the output ends of the first pipeline 11 and the second pipeline 12, and a communication groove communicated with the first hole and the second hole respectively, so as to converge the liquid reagent output from the output ends of the first pipeline 11 and the second pipeline 12 at the lower end of the connector 14, so that the liquid reagent is converged and then transported to the reagent bottle.

[0052] Refer to Figures 3 to 5 , in some embodiments, the barrel assembly 10 further includes a valve switch 15 installed on the connector 14 and corresponding to the first pipeline 11 and the second pipeline 12.

[0053] In specific implementation, the valve switch 15 is suitable for moving towards the first pipeline 11 and the second pipeline 12 to press and close the first pipeline 11 and the second pipeline 12, and moving away from the first pipeline 11 and the second pipeline 12 to release the pressing and open the first pipeline 11 and the second pipeline 12.

[0054] Specifically, when the reagent does not need to be transported, the first pipeline 11 and the second pipeline 12 are closed by the valve switch 15. When the reagent needs to be transported, first, the first pipeline 11 and the second pipeline 12 are opened by the valve switch 15, and then the first roller 21 is used to squeeze the first pipeline 11 to control the first flow rate of the liquid reagent in the first pipeline 11, and the second roller 22 is used to squeeze the second pipeline 12 to control the second flow rate of the liquid reagent in the second pipeline 12.

[0055] In some embodiments, the valve switch 15 may include a pressing member 151 provided corresponding to the first pipeline 11 and the second pipeline 12, a spring 152 disposed between the pressing member 151 and the connecting member 14, and a control member 153 movably connected to the pressing member 151 by sequentially passing through the connecting member 14 and the spring 152.

[0056] In a specific implementation, the first pipeline 11 and the second pipeline 12 are located between the connecting member 14 and the pressing member 151. The control member 153 is adapted to move relative to the pressing member 151 to shorten the gap between the connecting member 14 and the pressing member 151, so that the pressing member 151 presses the first pipeline 11 and the second pipeline 12, thereby closing the first pipeline 11 and the second pipeline 12 while compressing the spring 152; at the same time, the control member 153 is also adapted to move in the opposite direction relative to the pressing member 151 to increase the gap between the connecting member 14 and the pressing member 151, so that the spring 152 resumes compression to drive the pressing member 151 to move away from the first pipeline 11 and the second pipeline 12, thereby opening the first pipeline 11 and the second pipeline 12.

[0057] In some embodiments, the control member 153 may be implemented by a screw.

[0058] In a specific implementation, one end of the screw is threadedly connected to the pressing member 151, and the other end thereof is limited outside the connecting member 14. And, the screw can be rotated by controlling the other end of the screw exposed outside the connecting member 14 to make the screw move spirally relative to the pressing member 151.

[0059] When the screw moves spirally relative to the pressing member 151, the gap between the connecting member 14 and the pressing member 151 can be shortened, so that the pressing member 151 presses the first pipeline 11 and the second pipeline 12; when the screw moves in the opposite spiral direction relative to the pressing member 151, the gap between the connecting member 14 and the pressing member 151 can be increased, so that the spring 152 resumes compression to drive the pressing member 151 to move away from the first pipeline 11 and the second pipeline 12.

[0060] In some embodiments, the cross-section of the pressing member 151 on the side facing the first pipeline 11 and the second pipeline 12 gradually decreases in the direction pointing to the first pipeline 11 and the second pipeline 12. In this way, the contact area between the pressing member 151 and the first pipeline 11 and the second pipeline 12 can be reduced, and the pressing force can be enhanced, so that the first pipeline 11 and the second pipeline 12 can be effectively pressed and closed by the pressing member 151.

[0061] In some embodiments, the first pipeline 11 and the second pipeline 12 can be simultaneously pressed by one pressing member 151.

[0062] In some embodiments, the pressing member 151 further has a first contact portion and a second contact portion respectively facing the first pipeline 11 and the second pipeline 12, for pressing the first pipeline 11 and the second pipeline 12 respectively.

[0063] As described above, in the embodiments of the present invention, the liquid reagent in the reagent barrel 13 is output and distributed into the reagent bottle through the first pipeline 11 and the second pipeline 12 communicated with the reagent barrel 13, and the first flow rate and the second flow rate of the reagent output by the first pipeline 11 and the second pipeline 12 are respectively controlled by the first roller 21 and the second roller 22, so that the liquid reagent output into the reagent bottle can be accurately metered.

[0064] In some embodiments, the output process of the liquid reagent may include a first stage and a second stage adjacent in time. And, the first roller 21 is made to squeeze the first pipeline 11 in the first stage to control the first flow rate to gradually decrease, and the second roller 22 is made to squeeze the second pipeline 12 in the second stage to control the second flow rate to gradually decrease, while controlling the decreasing speed of the second flow rate to be less than that of the first flow rate. In this way, the output dose of the liquid reagent can be controlled more precisely.

[0065] In the embodiments of the present invention, the first pipeline 11 and the second pipeline 12 are adapted to convey the liquid reagent along the vertical direction by the action of gravity.

[0066] In specific implementation, the first pipeline 11 and the second pipeline 12 are respectively vertically arranged, the reagent barrel 13 is located above the first pipeline 11 and the second pipeline 12 and outputs the liquid reagent through the first pipeline 11 and the second pipeline 12, and the first roller 21 and the second roller 22 are respectively located on the sides of the first pipeline 11 and the second pipeline 12 to squeeze the first pipeline 11 and the second pipeline 12 respectively from the sides.

[0067] In some embodiments, the driving module 23 is adapted to drive the first roller 21 and the second roller 22 to move simultaneously, and at the same time, the movement trajectory of the first roller 21 in the vertical plane is designed as a broken line, and the movement trajectory of the second roller 22 in the vertical plane is designed as a straight line obliquely upward or obliquely downward.

[0068] In specific implementation, the broken line includes a first straight line segment and a second straight line segment adjacent to each other and respectively corresponding to the first stage and the second stage. Among them, the first straight line segment is a straight line segment obliquely upward or obliquely downward; the second straight line segment is a straight line segment parallel to the vertical direction.

[0069] It should be noted that the first straight line segment of the broken line corresponds to the movement trajectory of the first roller 21 in the first stage, and the second straight line segment of the broken line corresponds to the movement trajectory of the first roller 21 in the second stage.

[0070] In the first stage, the movement trajectories of the first roller 21 and the second roller 22 in the vertical plane are both straight lines slanting upward or downward. Moreover, the first roller 21 contacts the first pipeline 11 and squeezes the first pipeline 11 in a direction slanting upward or downward towards the first pipeline 11, thereby controlling the first flow rate of the liquid reagent conveyed by the first pipeline 11 to gradually decrease until it becomes zero; it can be understood that the first flow rate is zero when the first roller 21 completely compresses the first pipeline 11. Meanwhile, the second roller 22 moves together with the first roller 21, but the second roller 22 does not contact the second pipeline 12 and does not squeeze the second pipeline 12, and the second pipeline 12 always conveys the liquid reagent at the initial second flow rate, that is, the maximum flow rate of the second pipeline 12.

[0071] In the second stage, the first roller 21 moves in the vertical direction, and since it has completely compressed the first pipeline 11 after the end of the first stage, therefore, the first pipeline 11 does not discharge liquid in the second stage. Meanwhile, the second roller 22 starts to contact the second pipeline 12 and squeezes the second pipeline 12 in a direction slanting upward or downward towards the second pipeline 12, thereby controlling the second flow rate of the liquid reagent conveyed by the second pipeline 12 to gradually decrease.

[0072] In some embodiments, the liquid reagent dispensing device 1 further includes a weighing module located below the reagent bottle, and a control module respectively connected to the weighing module and the driving module 23. Among them, the weighing module is adapted to measure the dosage of the liquid reagent output into the reagent bottle; the control module is adapted to control the first flow rate and the second flow rate through the driving module 23 based on the dosage.

[0073] In some embodiments, the weighing module may include a balance with appropriate precision.

[0074] The control module is adapted to control the movement speeds of the first roller 21 and the second roller 22 through the driving module 23 based on the magnitude of the dosage, thereby controlling the first flow rate and the second flow rate through the movement speeds of the first roller 21 and the second roller 22.

[0075] In specific implementation, the specific implementation manner of the control module to control the movement speeds of the first roller 21 and the second roller 22 through the driving module 23 based on the magnitude of the dosage can be implemented by any known conventional technical means in the art, and is not limited herein.

[0076] In summary, in the embodiments of the present invention, by designing different movement trajectories for the first roller 21 and the second roller 22, a driving module 23 is used to drive the first roller 21 and the second roller 22 respectively to control the first flow rate of the first pipeline 11 and the second flow rate of the second pipeline 12 in different stages.

[0077] In a specific implementation, the diameter of the first pipeline 11 is greater than that of the second pipeline 12; the diameter of the first roller 21 is greater than that of the second roller 22.

[0078] In this way, it is not only beneficial for the second flow rate of the liquid reagent transported by the second pipeline 12 to be relatively less than the first flow rate of the liquid reagent transported by the first pipeline 11, so as to facilitate the output of the liquid reagent in gradually decreasing doses to more precisely control the output dose of the liquid reagent; but also facilitate the first roller 21 to contact the first pipeline 11 in the first stage, and the second roller 22 not to contact the second pipeline 12 in the first stage but to contact the second pipeline 12 in the second stage, so as to effectively realize using a driving module 23 to drive the first roller 21 and the second roller 22 respectively to control the first flow rate of the first pipeline 11 and the second flow rate of the second pipeline 12 in different stages.

[0079] Refer to Figures 6 to 12 , in some embodiments, the driving module 23 further includes a first shaft 231, a second shaft 232, a pair of first tracks 2341 and a pair of second tracks 2342. Among them, the pair of first tracks 2341 are located on both sides of the first roller 21; the first shaft 231 passes through the first roller 21 and is coaxially arranged with the first roller 21, and its two ends are respectively limited within the two first tracks 2341 of the pair of first tracks 2341; the pair of second tracks 2342 are respectively located on both sides of the second roller 22; the second shaft 232 passes through the second roller 22 and is coaxially arranged with the second roller 22, and its two ends are respectively limited within the two second tracks 2342 of the pair of second tracks 2342.

[0080] In a specific implementation, the first track 2341 can be a broken-line track in a vertical plane; the second track 2342 can be a straight track obliquely upward or obliquely downward in a vertical plane.

[0081] Further, the broken-line track includes an adjacent first straight track and a second straight track. Among them, the first straight track is a straight track obliquely upward or obliquely downward; the second straight track is a straight track parallel to the vertical direction.

[0082] It can be understood that in the embodiments of the present invention, the movement trajectory of the first roller 21 in the vertical plane is defined by a pair of first tracks 2341, and the movement trajectory of the second roller 22 in the vertical plane is defined by a pair of second tracks 2342.

[0083] In some embodiments, the dispensing assembly 20 further includes a dispensing assembly frame 235.

[0084] Refer to Figures 7 to 12, in some embodiments, a pair of first tracks 2341 and a pair of second tracks 2342 can both be formed by means of the dispensing component frame 235, that is, a pair of first tracks 2341 and a pair of second tracks are respectively formed on the dispensing component frame 235. At the same time, the first roller 21 and the second roller 22 are located within the dispensing component frame 235.

[0085] In some embodiments, the drive module 23 further includes a pair of third tracks 2343 adapted to limit the two ends of the first shaft 231 respectively, and a pair of fourth tracks 2344 adapted to limit the two ends of the second shaft 232 respectively. Moreover, both the third tracks 2343 and the fourth tracks 2344 are linear tracks parallel to the horizontal direction.

[0086] It can be understood that in the embodiments of the present invention, the movement trajectory of the first roller 21 in the horizontal plane is defined by a pair of third tracks 2343, and the movement trajectory of the second roller 22 in the horizontal plane is defined by a pair of fourth tracks 2344.

[0087] In a specific implementation, the lengths of the third tracks 2343 and the fourth tracks 2344 can be the same. In other words, the movement distances of the first roller 21 and the second roller 22 in the horizontal plane can be the same.

[0088] In a specific implementation, the third tracks 2343 and the first tracks 2341 are arranged adjacent to each other. The end of the first shaft 231 sequentially passes through the third tracks 2343 and the first tracks 2341 and is simultaneously limited by the third tracks 2343 and the first tracks 2341. The fourth tracks 2344 and the second tracks 2342 are arranged adjacent to each other. The end of the second shaft 232 sequentially passes through the fourth tracks 2344 and the second tracks 2342 and is simultaneously limited by the fourth tracks 2344 and the second tracks 2342.

[0089] In some embodiments, the third tracks 2343 are arranged inside the first tracks 2341; the fourth tracks 2344 are arranged inside the second tracks 2342.

[0090] Continue to refer to Figure 6 , in some embodiments, the drive module 23 further includes a drive unit 233 connected to a pair of third tracks 2343 and a pair of fourth tracks 2344.

[0091] In a specific implementation, the driving unit 233 is adapted to drive a pair of third tracks 2343 and a pair of fourth tracks 2344 to move vertically up and down. When the pair of third tracks 2343 move up and down, they drive the first shaft 231 to move up and down. When the first shaft 231 moves up and down, it moves along a pair of first tracks 2341 and a pair of third tracks 2343. At the same time, the first roller 21 moves synchronously with the first shaft 231. Similarly, when the pair of fourth tracks 2344 move up and down, they drive the second shaft 232 to move up and down. When the second shaft 232 moves up and down, it moves along a pair of second tracks 2342 and a pair of fourth tracks 2344. At the same time, the second roller 22 moves synchronously with the second shaft 232.

[0092] Continue to refer to Figure 6 , in some embodiments, the driving unit 233 may include a motor 2331, a screw 2332 connected to the motor 2331, a nut 2333 in transmission connection with the screw 2332, and a driving connecting member 2335 fixedly connected to the nut 2333.

[0093] In a specific implementation, the screw 2332 is vertically arranged, and the motor 2331 drives the screw 2332 to rotate in a vertical plane. When the screw 2332 rotates, it drives the nut 2333 to drive the driving connecting member 2335 to move vertically up and down.

[0094] Furthermore, the driving unit 233 further includes at least two guiding columns 2334. The at least two guiding columns 2334 are all arranged along the vertical direction and respectively pass through the driving connecting member 2335, so that the driving connecting member 2335 is adapted to move up and down along the at least two guiding columns 2334. Thus, the driving connecting member 2335 and the nut 2333 can be restricted from rotating around the screw 2332 by the at least two guiding columns 2334.

[0095] In some embodiments, a pair of third tracks 2343 and a pair of fourth tracks 2344 can both be formed by means of the driving connecting member 2335, that is, a pair of third tracks 2343 and a pair of fourth tracks 2344 are respectively formed on the driving connecting member 2335. When the driving connecting member 2335 moves up and down, it drives the pair of third tracks 2343 and the pair of fourth tracks 2344 to move up and down.

[0096] As described above, when the pair of third tracks 2343 move up and down, they drive the first shaft 231 to move up and down. When the first shaft 231 moves up and down, it moves along a pair of first tracks 2341 and a pair of third tracks 2343. At the same time, the first roller 21 moves synchronously with the first shaft 231. Similarly, when the pair of fourth tracks 2344 move up and down, they drive the second shaft 232 to move up and down. When the second shaft 232 moves up and down, it moves along a pair of second tracks 2342 and a pair of fourth tracks 2344. At the same time, the second roller 22 moves synchronously with the second shaft 232.

[0097] In a specific implementation, when a pair of third tracks 2343 moves up and down, the first shaft 231 moves obliquely upward or downward along the first track 2341 and at the same time moves toward the first pipeline 11 along the third track 2343, and at the same time makes the first roller 21 move obliquely upward or downward toward the first pipeline 11. When a pair of fourth tracks 2344 moves up and down, the second shaft 232 moves obliquely upward or downward along the second track 2342 and at the same time moves toward the second pipeline 12 along the fourth track 2344, and at the same time makes the second roller 22 move obliquely upward or downward toward the second pipeline 12.

[0098] In an embodiment of the present invention, the driving unit 233 drives the first shaft 231 to move along the first track 2341 and the third track 2343, and drives the second shaft 232 to move along the second track 2342 and the fourth track 2344, and then drives the first roller 21 and the second roller 22 to move respectively through the first shaft 231 and the second shaft 232.

[0099] In a specific implementation, corresponding to the output process of the liquid reagent, the movement processes of the first shaft 231 and the second shaft 232 may include a first stage and a second stage adjacent in time. In the first stage, the first roller 21 and the second roller 22 move from the first position to the second position; in the second stage, the first roller 21 and the second roller 22 move from the second position to the third position.

[0100] In some embodiments, the movement trajectory of the second roller 22 may be obliquely upward toward the second pipeline 12. In this case, the first position, the second position, and the third position increase in sequence.

[0101] In the first stage, the first roller 21 contacts the first pipeline 11, and the first roller 21 moves from the first position to the second position in an obliquely upward or downward direction and presses the first pipeline 11 to control the first flow rate of the liquid reagent conveyed by the first pipeline 11 to gradually decrease. At the same time, since the diameter of the second pipeline 12 is smaller than the diameter of the first pipeline 11 and the diameter of the second roller 22 is smaller than the diameter of the first roller 21, even if the second roller 22 and the first roller 21 are coaxially arranged, when the first roller 21 contacts the first pipeline 11, the second roller 22 still does not contact the second pipeline 12, and the second pipeline 12 will convey the liquid reagent at its maximum flow rate.

[0102] At the end of the first stage, the first roller 21 completely presses the first pipeline 11 to make the first flow rate zero, and at the same time the second roller 22 starts to contact the second pipeline 12.

[0103] In the second stage, the first roller 21 moves vertically from the second position to the third position. Since it has completely clamped the first pipeline 11 after the end of the first stage, the first pipeline 11 stops discharging liquid in the second stage. Meanwhile, the second roller 22 starts to contact the second pipeline 12 and extrudes the second pipeline 12 in an obliquely upward or obliquely downward direction, thereby controlling the second flow rate of the liquid reagent conveyed by the second pipeline 12 to gradually decrease.

[0104] By adopting the above technical solution, the output dose of the liquid reagent can be gradually decreased, so as to very precisely control the dose of the liquid reagent conveyed into the reagent bottle.

[0105] In some embodiments, before outputting the liquid reagent, the first roller 21 and the second roller 22 can also be moved to the third position, and the first roller 21 and the second roller 22 completely clamp the first pipeline 11 and the second pipeline 12 respectively at the third position. That is, the first roller 21 and the second roller 22 completely clamp and close the first pipeline 11 and the second pipeline 12 in the initial working state. In this way, the dose of the output liquid reagent can be better controlled, and the situation that the first pipeline 11 and the second pipeline 12 are completely opened in the initial state, resulting in an excessive output dose at the beginning, can be avoided.

[0106] It should be noted that in the specific implementation, the first pipeline 11 and the second pipeline 12 are first opened through the valve switch 15. When the valve switch 15 opens the first pipeline 11 and the second pipeline 12, since the first roller 21 and the second roller 22 respectively completely clamp the first pipeline 11 and the second pipeline 12, the first pipeline 11 and the second pipeline 12 are still in the closed state.

[0107] When a large dose of liquid reagent needs to be output to the reagent bottle, the first roller 21 and the second roller 22 can be first moved to the first position or first moved to an appropriate position corresponding to the first stage, and then the first roller 21 and the second roller 22 are moved from the current position to the third position, and the first pipeline 11 is extruded by the first roller 21 to control the first flow rate of the liquid reagent in the first pipeline 11, and the second pipeline 12 is extruded by the second roller 22 to control the second flow rate of the liquid reagent in the second pipeline 12. In this way, when the output dose requirement is large, the liquid reagent can be conveyed through the first pipeline 11 and the second pipeline 12 simultaneously.

[0108] When it is necessary to output a smaller dose of liquid reagent to the reagent bottle, the first roller 21 and the second roller 22 can be moved to the second position first, or the first roller 21 and the second roller 22 can be moved to an appropriate position corresponding to the second stage first, and then the first roller 21 and the second roller 22 are moved from the current position to the third position, and the second roller 22 is used to squeeze the second pipeline 12 to control the second flow rate of the liquid reagent in the second pipeline 12. At the same time, since the first roller 21 has completely pressed the first pipeline 11 and only moves in the vertical direction during this process, the first pipeline 11 will not discharge liquid. In this way, when the output dose requirement is small, the liquid reagent can be transported only through the second pipeline 12 at a lower second flow rate, so as to better control the output dose of the liquid reagent.

[0109] In the embodiment of the present invention, the first pipeline 11 and the second pipeline 12 can also be closed and opened by the first roller 21 and the second roller 22 respectively.

[0110] Specifically, when in the initial working state, the first roller 21 and the second roller 22 respectively completely press the first pipeline 11 and the second pipeline 12 to close them; when it is necessary to transport the liquid reagent, the second pipeline 12 and the first pipeline 11 are gradually opened or only the second pipeline 12 is opened by controlling the movement of the first roller 21 and the second roller 22.

[0111] It can be understood that when both the second pipeline 12 and the first pipeline 11 are opened, it is suitable to output a larger dose of liquid reagent to the reagent bottle; when only the second pipeline 12 is opened, it is suitable to output a smaller dose of liquid reagent to the reagent bottle.

[0112] In the specific implementation, the opening degrees of the first pipeline 11 and the second pipeline 12 can be determined based on the output dose requirement; when the output dose requirement is large, the opening degrees of the first pipeline 11 and the second pipeline 12 can be increased correspondingly; when the output dose requirement is small, the opening degrees of the first pipeline 11 and the second pipeline 12 or only the second pipeline 12 (when only the second pipeline 12, the first pipeline 11 is closed and not opened) can be decreased correspondingly. Among them, the opening degree of the first pipeline 11 is related to the pressing degree of the first roller 21 on the first pipeline 11, and the opening degree of the second pipeline 12 is related to the pressing degree of the second roller 22 on the second pipeline 12.

[0113] When the transportation of the liquid reagent is completed, the first roller 21 and the second roller 22 can be returned to the third position again to respectively completely press the first pipeline 11 and the second pipeline 12 to close them.

[0114] After the first pipeline 11 and the second pipeline 12 are respectively closed by the first roller 21 and the second roller 22, the first pipeline 11 and the second pipeline 12 are further completely closed by the valve switch 15.

[0115] After the first pipeline 11 and the second pipeline 12 are completely closed by the valve switch 15, the bucket assembly 10 and the dispensing assembly 20 can be separated. In this way, it can be ensured that the first pipeline 11 and the second pipeline 12 are in a completely closed state when the bucket assembly 10 and the dispensing assembly 20 are separated, thus avoiding liquid leakage.

[0116] Continue to refer to Figure 1 , in some embodiments, the liquid reagent dispensing device 1 further includes a bucket support 30.

[0117] In a specific implementation, the bucket support 30 is adapted to support the reagent bucket 13, and when the reagent bucket 13 is supported on the bucket support 30, the first pipeline 11 and the second pipeline 12 are respectively arranged corresponding to the first roller 21 and the second roller 22.

[0118] Continue to refer to Figure 2 , in some embodiments, the bucket assembly 10 may further include a limiting member 40.

[0119] In a specific implementation, the limiting member 40 may be located within the bucket support 30 and has a limiting groove 41 corresponding to the pressing member 151 of the valve switch 15 and extending in the horizontal direction.

[0120] When the first pipeline 11 and the second pipeline 12 are completely closed by the movement of the control member 153 relative to the pressing member 151, the projection of the pressing member 151 and the limiting groove 41 in the horizontal plane are offset. In this way, the first pipeline 11, the second pipeline 12, the bucket 13, the connecting member 14 and the valve switch 15 can move up and down as a whole, and there will be no liquid leakage during the movement.

[0121] When the complete closing is released by the reverse movement of the control member 153 relative to the pressing member 151, the pressing member 151 gradually embeds into the limiting groove 41 and overlaps with the projection of the limiting groove 41 in the horizontal plane. In this way, when the first pipeline 11 and the second pipeline 12 are not completely closed, the overall up and down movement of the first pipeline 11, the second pipeline 12, the bucket 13, the connecting member 14 and the valve switch 15 can be restricted, thereby avoiding liquid leakage due to the incomplete closing of the first pipeline 11 and the second pipeline 12 when the first pipeline 11, the second pipeline 12, the bucket 13, the connecting member 14 and the valve switch 15 move as a whole.

[0122] In some embodiments, the limiting member 40 can be provided independently of the bucket support 30.

[0123] In other embodiments, the limiting member 40 can also be integrally formed with the bucket support 30.

[0124] Although specific embodiments of the present invention have been described above, these embodiments are not intended to limit the scope of the disclosure of the present invention, even in the case where a single embodiment is described only with respect to specific features. The examples of features provided in the disclosure of the present invention are intended to be illustrative rather than limiting, unless otherwise stated. In specific implementations, according to actual needs and where technically feasible, the technical features of one or more dependent claims may be combined with the technical features of the independent claim, and the technical features of the corresponding claims may be combined in any appropriate manner rather than only through the specific combinations listed in the claims.

[0125] Although the present invention has been disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A liquid reagent dispensing device (1), characterized in that, Comprising: A barrel assembly (10) including a first pipeline (11) and a second pipeline (12) which are adapted to communicate with a reagent barrel (13) for accommodating a liquid reagent and are adapted to output the liquid reagent respectively; A dispensing assembly (20) including a first roller (21) and a second roller (22) respectively arranged corresponding to the first pipeline (11) and the second pipeline (12), and a driving module (23) connected to the first roller (21) and the second roller (22); Wherein, the driving module (23) is adapted to drive the first roller (21) and the second roller (22) to move so as to control a first flow rate of the liquid reagent in the first pipeline (11) by squeezing the first pipeline (11) through the first roller (21), and control a second flow rate of the liquid reagent in the second pipeline (12) by squeezing the second pipeline (12) through the second roller (22).

2. The liquid reagent dispensing device (1) according to claim 1, characterized in that, The barrel assembly (10) further includes the reagent barrel (13).

3. The liquid reagent dispensing device (1) according to claim 1, characterized in that, The output process of the liquid reagent includes a first stage and a second stage adjacent in time; the first roller (21) is adapted to squeeze the first pipeline (11) in the first stage to control the first flow rate to gradually decrease; the second roller (22) is adapted to squeeze the second pipeline (12) in the second stage to control the second flow rate to gradually decrease; the decreasing speed of the second flow rate is less than that of the first flow rate.

4. The liquid reagent dispensing device (1) according to claim 3, characterized in that, The first roller (21) and the second roller (22) are adapted to move simultaneously, and the movement trajectory of the first roller (21) in the vertical plane is a broken line, and the movement trajectory of the second roller (22) in the vertical plane is a straight line obliquely upward or obliquely downward.

5. The liquid reagent dispensing device (1) according to claim 4, characterized in that, The broken line includes a first straight line segment and a second straight line segment which are adjacent and respectively correspond to the first stage and the second stage; the first straight line segment is a straight line segment obliquely upward or obliquely downward; the second straight line segment is a straight line segment parallel to the vertical direction.

6. The liquid reagent dispensing device (1) according to any one of claims 1 to 5, characterized in that, The diameter of the first pipeline (11) is larger than that of the second pipeline (12); the diameter of the first roller (21) is larger than that of the second roller (22).

7. The liquid reagent dispensing device (1) according to any one of claims 1 to 5, characterized in that, The driving module (23) further includes a first shaft (231) passing through the first roller (21), a second shaft (232) passing through the second roller (22), a pair of first tracks (2341) respectively limiting two ends of the first shaft (231), and a pair of second tracks (2342) respectively limiting two ends of the second shaft (232); the first track (2341) is a broken line track; the second track (2342) is a straight line track obliquely upward or obliquely downward; the broken line track includes an adjacent first straight line track and a second straight line track; the first straight line track is a straight line track obliquely upward or obliquely downward; the second straight line track is a straight line track parallel to the vertical direction.

8. The liquid reagent dispensing device (1) according to claim 7, characterized in that, The driving module (23) further includes a pair of third tracks (2343) adapted to limit both ends of the first shaft (231) respectively, and a pair of fourth tracks (2344) adapted to limit both ends of the second shaft (232) respectively; both the third track (2343) and the fourth track (2344) are linear tracks; the linear tracks are parallel to the horizontal direction.

9. The liquid reagent dispensing device (1) according to claim 8, characterized in that, The driving module (23) further includes a driving unit (233) connected to the third track (2343) and the fourth track (2344); the driving unit (233) is adapted to drive the third track (2343) and the fourth track (2344) to vertically lift and lower so that the first shaft (231) and the second shaft (232) move along the first track (2341), the third track (2343) and the second track (2342), the fourth track (2344) respectively while vertically lifting and lowering with the third track (2343) and the fourth track (2344).

10. The liquid reagent dispensing device (1) according to claim 1, characterized in that, The first pipeline (11) and the second pipeline (12) are adapted to output the liquid reagent into the reagent bottle; the liquid reagent dispensing device (1) further includes a weighing module located below the reagent bottle, and a control module respectively connected to the weighing module and the driving module (23); the weighing module is adapted to measure the dose of the liquid reagent output into the reagent bottle; the control module is adapted to control the first flow rate and the second flow rate through the driving module (23) based on the dose.

11. The liquid reagent dispensing device (1) according to claim 1, characterized in that, It further includes a bucket support (30); the reagent bucket (13) is supported on the bucket support (30) and the first pipeline (11) and the second pipeline (12) are respectively arranged corresponding to the first roller (21) and the second roller (22).

12. The liquid reagent dispensing device (1) according to claim 1, characterized in that, The reagent bucket (13) has a reagent bucket opening (13a) adapted to output the liquid reagent; the bucket assembly (10) further includes a connecting member (14) installed at the reagent bucket opening (13a); the first pipeline (11) and the second pipeline (12) are respectively fixedly installed on the connecting member (14).

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