An analytical liquid filtration and collection system

Abstract

The present invention discloses a system for filtering and collecting analytical liquid, comprising a support frame, on which a conveying mechanism, a transfer mechanism, a pushing mechanism, and a collecting mechanism are provided, wherein the collecting mechanism is located below the pushing mechanism; the conveying mechanism is used to transport a syringe to the transfer mechanism, the transfer mechanism is used to transfer the syringe between the pushing mechanism and the collecting mechanism, the pushing mechanism is used to press the syringe's push rod, and the collecting mechanism is used to collect the analytical liquid; the pushing mechanism comprises a bidirectional cylinder fixed to the support frame, and the bottom of the bidirectional cylinder's piston rod is used to press the syringe's push rod. Through the cooperation of the conveying mechanism, the transfer mechanism, the pushing mechanism, and the collecting mechanism, the analytical liquid is automatically collected, and the piston rod of the bidirectional cylinder is used to push the syringe's push rod to move, eliminating the need for manual operation, thereby improving work efficiency and the degree of automation, reducing the burden on staff, and improving detection efficiency.

Description

Technical Field

[0001] The present invention relates to the field of chemical detection, and in particular to an analysis liquid filtering and collecting system. Background Art

[0002] In my country's product standard system, many products need to be tested for chemical substances, especially consumer products such as food, cosmetics, shoes and clothing, packaging, toys, student supplies, furniture, etc. Many of these chemical substances require the analysis liquid obtained through pre-treatment to be finely filtered (for example, the analysis liquid needs to pass through a 0.22μm or 0.45μm filter membrane) before it can be measured by high-precision instruments such as spectroscopy and chromatography.

[0003] The detection operation in the related art usually connects the filter to the syringe, and then the worker manually pushes the syringe plunger to make the analysis liquid resist the resistance of the filter membrane, pass through the filter membrane and enter the analysis bottle, thereby collecting the analysis liquid, and then the analysis liquid is tested by the analytical instrument.

[0004] However, the work efficiency of collecting the analysis liquid by manually pushing the syringe plunger is relatively low. If the analysis liquid needs to be collected in large quantities, it will affect the detection efficiency and needs to be improved. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide an analytical liquid filtering and collecting system, which has the effect of improving detection efficiency.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: an analytical liquid filtration and collection system, comprising a support frame, on which a conveying mechanism, a transfer mechanism, a pushing mechanism, and a collecting mechanism are provided, and the collecting mechanism is located below the pushing mechanism;

[0007] The conveying mechanism is used to transport the syringe to the transfer mechanism, the transfer mechanism is used to transfer the syringe between the pushing mechanism and the collecting mechanism, the pushing mechanism is used to press the push rod of the syringe, and the collecting mechanism is used to collect the analysis liquid;

[0008] Wherein, the pushing mechanism includes:

[0009] The bidirectional cylinder is fixed on the support frame, and the bottom of the piston rod of the bidirectional cylinder is used for pressing the push rod of the syringe.

[0010] By adopting the above technical solution, when the analysis liquid needs to be collected, the filter is connected to the syringe and the syringe is placed on the conveying mechanism. The conveying mechanism then transports the syringe to the transfer mechanism, which then transfers the syringe to directly below the bidirectional cylinder. At this point, the piston rod of the bidirectional cylinder presses the syringe's push rod, thereby filtering the chemical liquid and obtaining the analysis liquid. Simultaneously, the collection mechanism collects the analysis liquid. This repetitive process achieves continuous collection of the chemical liquid. Through the coordination of the conveying mechanism, transfer mechanism, push mechanism, and collection mechanism, automated filtration of the chemical liquid and automated collection of the analysis liquid are achieved, with a high degree of automation, low worker workload, and higher work efficiency, making it suitable for large-scale analysis liquid collection operations. Furthermore, the piston rod of the bidirectional cylinder is used to drive the syringe's push rod, eliminating the need for manual operation, saving time and effort, improving work efficiency, reducing the burden on workers, and enhancing detection efficiency.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the transfer mechanism includes:

[0012] A transfer shaft, horizontally rotatably connected to the support frame;

[0013] A transfer plate, fixed on the transfer shaft;

[0014] A self-locking motor is fixed on the support frame, and the transfer shaft is connected to the output shaft of the self-locking motor;

[0015] There are multiple limiting members, each of which is provided on a side wall of the transfer tray. The limiting members are evenly distributed along the circumference of the transfer tray, and are used to fix the syringe;

[0016] Wherein, the conveying mechanism is used to transport the syringe to the limiting member located at the bottom position of the transfer tray, and the piston rod of the bidirectional cylinder is used to press the push rod of the syringe on the limiting member located at the top position of the transfer tray.

[0017] By adopting the above technical solution, the conveying mechanism transports the syringe to the stopper located at the bottom of the transfer tray, where it is secured. Subsequently, a self-locking motor controls the transfer shaft to rotate the transfer tray and the stopper. When the stopper moves to the top of the transfer tray, the syringe's push rod is positioned directly below the bidirectional cylinder, enabling rapid syringe transfer and improving work efficiency.

[0018] In a preferred embodiment, the present invention can be further configured as follows: the limiting member includes:

[0019] A limiting block, fixed to the side wall of the transfer tray;

[0020] A limiting groove is provided on the side wall of the limiting block, and the syringe barrel of the syringe is inserted into the limiting groove;

[0021] There are two limit bars, each of which is fixed on the limit block. The two limit bars are arranged in an arc shape and are made of elastic material.

[0022] Among them, the inner surface of the limiting groove fits with the outer surface of the syringe barrel to achieve position limitation of the syringe along its own axis direction, and the two limiting strips are used to hold the syringe barrel together to prevent the syringe barrel from sliding out of the limiting groove.

[0023] By adopting the above technical solution, when the syringe barrel is stuck between the two limit bars and the syringe barrel enters the limit groove, the syringe can be quickly fixed, the operation is convenient, and the work efficiency is improved.

[0024] In a preferred embodiment, the present invention can be further configured as follows: the conveying mechanism includes:

[0025] An electric push rod is fixed on the support frame;

[0026] A support block is fixed to the telescopic end of the electric push rod;

[0027] A positioning groove is provided on the side wall of the support block, wherein the syringe barrel is inserted into the positioning groove, and the inner surface of the positioning groove is matched with the outer surface of the syringe barrel to achieve positional limitation of the syringe along its own axis direction;

[0028] There are multiple air suction holes, which are evenly arranged on the support block, and the multiple air suction holes are respectively connected to the positioning grooves;

[0029] An air intake pipe is provided on the support block, and the plurality of air intake holes are respectively connected to the air intake pipe;

[0030] An air pump is provided on the support frame, and the air suction pipe is connected to the air suction end of the air pump. When the air pump is started, the plurality of air suction holes can form a negative pressure and jointly adsorb and fix the syringe barrel;

[0031] When the limiting block is located at the bottom of the transfer plate, the positioning groove is aligned with the corresponding limiting groove, and the support block can push the syringe between the two limiting bars and allow the syringe barrel to enter the limiting groove.

[0032] By adopting the above technical solution, when the syringe needs to be transported, the syringe barrel is inserted into the positioning groove, and then the air pump is turned on. At this time, the multiple suction holes respectively create negative pressure and jointly adsorb and fix the syringe barrel, thereby achieving the position of the syringe. Subsequently, the support block is controlled by the electric push rod to drive the syringe to move. When the syringe is inserted between the two limit bars and the syringe barrel enters the limit groove, the syringe can be transported. By providing a simple structure and convenient operation of the transport mechanism, the syringe can be quickly loaded, thereby improving work efficiency.

[0033] In a preferred example, the present invention can be further configured as follows: a plurality of knocking rods are horizontally slidably connected to the support frame, the plurality of knocking rods are evenly arranged along the sliding direction of the support block, and the knocking rods are used to knock the syringe barrel, and a control component for controlling the horizontal movement of the knocking rod is provided on the support frame.

[0034] By adopting the above technical solution, when the support block drives the syringe forward, the control part controls the horizontal movement of the knocking rod, and causes the knocking rod to knock on the syringe barrel, so that the bubbles in the syringe can move upward to the needle tube position. At this time, the push rod of the syringe can be pushed to discharge the air in the syringe, thereby facilitating the subsequent collection of the analysis liquid.

[0035] In a preferred embodiment, the present invention can be further configured as follows: the control element includes:

[0036] a control ball fixed to the side wall of the support block;

[0037] There are multiple control blocks, each of which is fixed on the corresponding knocking rod, and each of the control blocks is provided with a control arc surface for the control ball to abut;

[0038] A plurality of springs are provided on the support frame and the corresponding knocking rods, the springs being used to control the movement of the control block and to cause the knocking rod to knock the syringe barrel;

[0039] Wherein, when the control ball is separated from the corresponding control arc surface, the corresponding knocking rod is aligned with the syringe barrel.

[0040] By adopting the above technical solution, when the support block drives the syringe forward, the control block moves under the joint action of the control ball and the control arc surface, and retracts the knock rod. When the control ball is separated from the corresponding control arc surface, the control block drives the knock rod to move in the opposite direction under the elastic force of the corresponding spring, and then the knock rod can knock the syringe barrel. By setting a control part with a simple structure and easy operation, the rapid movement of the knock rod can be achieved. At the same time, this design makes it possible to move the knock rod without consuming an additional drive source, which can not only improve the linkage of each component, but also improve the efficiency of resource utilization.

[0041] In a preferred example, the present invention can be further configured as follows: a receiving block is provided on the support frame, the receiving block is located below the knocking rod, and an extrusion slope is provided on the upper surface of the receiving block, the extrusion slope is for the push rod of the syringe to abut, and when the support block moves forward, the extrusion slope can press the push rod of the syringe.

[0042] By adopting this technical solution, as the support block drives the syringe forward and the tapping rod strikes the syringe barrel, the syringe push rod moves along the extrusion slope. At this time, the syringe push rod automatically moves upward under the action of the extrusion slope, causing bubbles in the syringe barrel to be expelled. This design can achieve automatic expulsion of bubbles in the syringe barrel, improving the linkage effect of various components and enhancing resource utilization efficiency.

[0043] In a preferred example, the present invention can be further configured as follows: the collection mechanism includes an electronic balance and an analysis bottle, the electronic balance is fixed on the support frame, the analysis bottle is placed on the tray of the electronic balance, the analysis bottle is located directly below the bidirectional cylinder, and the electronic balance is used to weigh the analysis liquid in the analysis bottle.

[0044] By adopting the above technical solution, the analysis liquid is collected at a fixed point using an analysis bottle, thereby achieving stable collection of the analysis liquid. At the same time, the analysis liquid is weighed by an electronic balance and the stroke of the bidirectional cylinder is controlled to ensure that the weight of the analysis liquid collected each time is as consistent as possible, thereby achieving quantitative collection of the analysis liquid.

[0045] In a preferred example, the present invention can be further configured as follows: an electronic micrometer is connected to the top of the piston rod of the bidirectional cylinder, and the electronic micrometer is used to measure the displacement of the piston rod of the bidirectional cylinder.

[0046] By adopting the above technical solution, the displacement of the piston rod of the bidirectional cylinder is calculated using an electronic micrometer. According to the formula: solution volume V = displacement value L measured by the electronic micrometer × inner diameter d of the syringe barrel × π / 4, the volume of the liquid in the analysis bottle can be obtained. Then, according to the formula: liquid density ρ = mass m measured by the electronic balance / solution volume V, the density of the analysis liquid can be obtained. The density of the analysis liquid facilitates the analysis of the mass of the solute dissolved by the test personnel, thereby improving the detection efficiency.

[0047] In a preferred example, the present invention can be further configured as follows: a controller is provided on the support frame, the electronic micrometer and the electronic balance are respectively connected to the controller, and the controller is used to receive the signal from the electronic balance and control the electronic micrometer to start calculating the displacement of the piston rod of the bidirectional cylinder.

[0048] By adopting the above technical solution, when the analytical liquid enters the analytical bottle, the electronic balance transmits a signal to the controller. At this time, the controller automatically controls the electronic micrometer to start measuring the displacement stroke of the piston rod of the bidirectional cylinder. No manual operation is required, which can not only improve the degree of automation of the equipment, but also reduce the burden on the staff and improve work efficiency.

[0049] In summary, the present invention has the following beneficial effects:

[0050] 1. The automated collection of analytical fluid is achieved through the cooperation of the conveying mechanism, the transfer mechanism, the pushing mechanism, and the collecting mechanism. The piston rod of the bidirectional cylinder is used to push the plunger of the syringe, eliminating the need for manual operation. This not only improves work efficiency, but also increases the degree of automation, reduces the burden on staff, and improves detection efficiency.

[0051] 2. By setting up a transfer mechanism with a simple structure and convenient operation, the syringe can be quickly transferred, thereby improving work efficiency;

[0052] 3. The knocking rod is controlled to move horizontally through the control part, and the knocking rod knocks the syringe barrel, so that the bubbles in the syringe can move upward to the needle tube position, making it convenient for the staff to discharge the air in the syringe, thereby facilitating the subsequent collection of the analysis liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a structural diagram of an embodiment;

[0054] Figure 2 is a side view of an embodiment;

[0055] Figure 3 2. It is a structural diagram of the transfer mechanism in the embodiment;

[0056] Figure 4 yes Figure 3A magnified schematic diagram of area A in the middle;

[0057] Figure 5 2. It is a structural diagram of the conveying mechanism in the embodiment;

[0058] Figure 6 is a cross-sectional view of a support block in an embodiment;

[0059] Figure 7 yes Figure 6 Schematic diagram of the enlarged area B.

[0060] 1. Support frame; 2. Conveying mechanism; 21. Electric push rod; 22. Support block; 23. Positioning groove; 24. Inhalation hole; 25. Inhalation pipe; 26. Air pump; 3. Transfer mechanism; 31. Transfer shaft; 32. Transfer plate; 33. Self-locking motor; 34. Limiting member; 341. Limiting block; 342. Limiting groove; 343. Limiting strip; 4. Pushing mechanism; 41. Bidirectional cylinder; 5. Collecting mechanism; 51. Electronic balance; 52. Analysis bottle; 6. Electronic micrometer; 7. Controller; 8. Knocking rod; 9. Control member; 91. Control ball; 92. Control block; 93. Control arc surface; 94. Spring; 10. Receiving block; 11. Extrusion slope. DETAILED DESCRIPTION

[0061] The present invention will be further described in detail below with reference to the accompanying drawings.

[0062] Reference Figure 1 and Figure 2 A system for filtering and collecting analytical fluids includes a support frame 1, on which are mounted a conveying mechanism 2, a transfer mechanism 3, a pushing mechanism 4, and a collecting mechanism 5, with the collecting mechanism 5 located below the pushing mechanism 4. The conveying mechanism 2 is used to transport a syringe to the transfer mechanism 3, which is used to transfer the syringe between the pushing mechanism 4 and the collecting mechanism 5. The pushing mechanism 4 is used to press the plunger of the syringe, and the collecting mechanism 5 is used to collect the analytical fluid.

[0063] Reference Figure 2 and Figure 3 The pushing mechanism 4 includes a bidirectional cylinder 41 fixed to the support frame 1, and the bottom of the piston rod of the bidirectional cylinder 41 is used to press the push rod of the syringe. At the same time, the top of the piston rod of the bidirectional cylinder 41 is connected to an electronic micrometer 6, and the electronic micrometer 6 is used to measure the displacement of the piston rod of the bidirectional cylinder 41.

[0064] Reference Figure 2 and Figure 3The collecting mechanism 5 includes an electronic balance 51 and an analysis bottle 52. The electronic balance 51 is fixed on the support frame 1. The analysis bottle 52 is placed on the tray of the electronic balance 51. The analysis bottle 52 is located directly below the bidirectional cylinder 41, and the electronic balance 51 is used to weigh the analysis liquid in the analysis bottle 52.

[0065] The piston rod displacement is measured using an electronic micrometer 6, while the analytical solution in the analytical bottle 52 is weighed using an electronic balance 51. The volume of the liquid in the analytical bottle 52 is calculated using the formula: solution volume V = displacement value L measured by the electronic micrometer 6 × syringe barrel inner diameter d × π / 4. Furthermore, the density of the analytical solution in the analytical bottle 52 is calculated using the formula: liquid density ρ = mass m measured by the scale / solution volume V. This density facilitates analysis of dissolved solute mass by test personnel, improving testing efficiency.

[0066] Reference Figure 2 and Figure 3 A controller 7 is provided on the support frame 1, and the electronic micrometer 6 and the electronic balance 51 are respectively connected to the controller 7. The controller 7 is used to receive the signal of the electronic balance 51 and control the electronic micrometer 6 to start calculating the displacement of the piston rod of the bidirectional cylinder 41.

[0067] Place the analysis bottle 52 on the electronic balance 51, press the reset button to zero, and push the plunger of the syringe downward via the piston rod of the bidirectional cylinder 41. When the analysis liquid enters the analysis bottle 52 (that is, a drop of solution enters the analysis bottle 52), the electronic balance 51 transmits a signal to the controller 7, which then automatically controls the electronic micrometer 6 to begin measuring the displacement of the piston rod of the bidirectional cylinder 41. If the central controller 76 is connected to an external PC, the central controller 76 simultaneously transmits the data measured by the electronic micrometer 64 and the weighing device 5 to the external PC, which then automatically calculates and displays information such as the density, volume, and weight of the solution.

[0068] Reference Figure 2 and Figure 3 The transfer mechanism 3 includes a transfer shaft 31 horizontally connected to the support frame 1, a transfer plate 32 is fixedly connected to the transfer shaft 31, a self-locking motor 33 is fixedly connected to the support frame 1, and the transfer shaft 31 is connected to the output shaft of the self-locking motor 33, so that the self-locking motor 33 can control the rotation of the transfer shaft 31.

[0069] Reference Figure 2 and Figure 3The sidewalls of the transfer tray 32 are provided with multiple stoppers 34, evenly distributed along the circumference of the transfer tray 32, and are used to secure the syringes. Simultaneously, the conveying mechanism 2 is used to transport the syringes to the stoppers 34 at the bottom of the transfer tray 32, while the piston rod of the bidirectional cylinder 41 is used to press the syringe push rod against the stoppers 34 at the top of the transfer tray 32.

[0070] The syringe is transported by the conveying mechanism 2 to the stopper 34 at the bottom of the transfer tray 32, where it is secured by the stopper 34. Subsequently, the self-locking motor 33 controls the transfer shaft 31 to rotate the transfer tray 32 and the stopper 34. When the stopper 34 moves to the top of the transfer tray 32, the syringe's push rod is located directly below the bidirectional cylinder 41, thereby achieving rapid transfer of the syringe.

[0071] Reference Figure 3 and Figure 4 The limiting member 34 includes a limiting block 341 fixed to the side wall of the transfer tray 32. The side wall of the limiting block 341 defines a limiting groove 342, and the limiting groove 342 is adapted for the syringe barrel to engage. The inner surface of the limiting groove 342 mates with the outer surface of the syringe barrel to limit the position of the syringe along its own axis.

[0072] Reference Figure 3 and Figure 4 Two arc-shaped limit bars 343 are fixedly connected to the sidewalls of the limit block 341 and are made of elastic material. These two limit bars 343 are used to hold the syringe barrel together, preventing it from slipping out of the limit slot 342. When the syringe barrel is inserted between the two limit bars 343 and into the limit slot 342, the syringe is quickly secured.

[0073] Reference Figure 5 and Figure 6 The delivery mechanism 2 includes an electric push rod 21 fixed to the support frame 1. The telescopic end of the electric push rod 21 is fixedly connected to a support block 22. The side wall of the support block 22 is provided with a positioning groove 23 for the syringe barrel to be inserted. At the same time, the inner surface of the positioning groove 23 is matched with the outer surface of the syringe barrel to achieve the positioning of the syringe along its own axis.

[0074] Reference Figure 5 and Figure 6 A plurality of suction holes 24 are evenly provided on the support block 22, and the plurality of suction holes 24 are respectively communicated with the positioning grooves 23. At the same time, a flexible suction pipe 25 is fixedly connected to the support block 22, and the plurality of suction holes 24 are respectively communicated with the suction pipe 25.

[0075] Reference Figure 5 and Figure 6 An air pump 26 is fixedly connected to the support frame 1, and the suction pipe 25 is connected to the suction end of the air pump 26. When the air pump 26 is started, the multiple suction holes 24 can form negative pressure and jointly adsorb and fix the syringe barrel.

[0076] Reference Figure 5 and Figure 6 When the limit block 341 is located at the bottom of the transfer plate 32, the positioning groove 23 is aligned with the corresponding limit groove 342. At this time, the support block 22 can push the syringe between the two limit bars 343 and allow the syringe barrel to enter the limit groove 342.

[0077] When the syringe needs to be transported, the syringe barrel is inserted into the positioning groove 23 and the air pump 26 is turned on. At this time, the multiple suction holes 24 respectively generate negative pressure and collectively suck and fix the syringe barrel, thereby achieving the desired position of the syringe. Subsequently, the electric push rod 21 controls the support block 22 to drive the syringe to move. When the syringe is inserted between the two limiting bars 343 and the syringe barrel enters the limiting groove 342, the syringe can be transported.

[0078] Reference Figure 1 and Figure 5 A plurality of knocking rods 8 are horizontally slidably connected to the support frame 1, and the plurality of knocking rods 8 are evenly arranged along the sliding direction of the support block 22. The knocking rods 8 are used to knock the syringe barrel, and a control member 9 for controlling the horizontal movement of the knocking rods 8 is provided on the support frame 1.

[0079] When the support block 22 drives the syringe forward, the control part 9 controls the horizontal movement of the knocking rod 8, and causes the knocking rod 8 to knock on the syringe barrel, so that the bubbles in the syringe barrel can move upward to the needle tube position. At this time, the push rod of the syringe can be pushed to discharge the air in the syringe barrel.

[0080] If there is air in the syringe, the analysis liquid will not be collected in the analysis bottle 52 when the syringe push rod moves downward. In this case, the measurement results of the electronic micrometer 6 will be erroneous, which will further cause errors in the measurement results of the solution density and volume, affecting the detection accuracy. Therefore, this design can help the syringe barrel to be emptied quickly, thereby improving the detection accuracy.

[0081] Reference Figure 6 and Figure 7The control member 9 includes a control ball 91 fixed to the side wall of the support block 22. A control block 92 is fixedly connected to each tapping rod 8, and each control block 92 is provided with a control arc 93 for the control ball 91 to abut. When the control ball 91 separates from the corresponding control arc 93, the corresponding tapping rod 8 is aligned with the syringe barrel. A spring 94 is provided between the support frame 1 and the corresponding tapping rod 8. The spring 94 is used to control the movement of the control block 92 and cause the tapping rod 8 to tap the syringe barrel.

[0082] As the support block 22 drives the syringe forward, the control block 92 moves under the combined action of the control ball 91 and the control arc surface 93, causing the knock rod 8 to retract. When the control ball 91 separates from the corresponding control arc surface 93, the control block 92 drives the knock rod 8 to move in the opposite direction under the elastic force of the corresponding spring 94, and then the knock rod 8 can knock the syringe barrel.

[0083] Reference Figure 5 and Figure 7 A receiving block 10 is provided on the support frame 1, and the receiving block 10 is located below the knocking rod 8. The upper surface of the receiving block 10 is provided with an extrusion slope 11, and the extrusion slope 11 is for the push rod of the syringe to abut, and when the support block 22 moves forward, the extrusion slope 11 can press the push rod of the syringe.

[0084] When the support block 22 drives the syringe forward and the knocking rod 8 knocks the syringe barrel, the syringe push rod moves along the extrusion slope 11. At this time, the syringe push rod automatically moves upward under the action of the extrusion slope 11, and the bubbles in the syringe barrel are automatically discharged.

[0085] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An analytical liquid filtering and collecting system, comprising a support frame (1), characterized in that: The support frame (1) is provided with a conveying mechanism (2), a transfer mechanism (3), a pushing mechanism (4) and a collecting mechanism (5), and the collecting mechanism (5) is located below the pushing mechanism (4); The conveying mechanism (2) is used to transport the syringe to the transfer mechanism (3), the transfer mechanism (3) is used to transport the syringe between the pushing mechanism (4) and the collecting mechanism (5), the pushing mechanism (4) is used to press the push rod of the syringe, and the collecting mechanism (5) is used to collect the analysis liquid; The pushing mechanism (4) comprises: a bidirectional cylinder (41) fixed on the support frame (1), and the bottom of the piston rod of the bidirectional cylinder (41) is used to press the push rod of the syringe; The conveying mechanism (2) comprises: An electric push rod (21) is fixed on the support frame (1); A support block (22) is fixed to the telescopic end of the electric push rod (21); A positioning groove (23) is provided on the side wall of the support block (22), wherein the syringe barrel is inserted into the positioning groove (23), and the inner surface of the positioning groove (23) is matched with the outer surface of the syringe barrel to achieve positional limitation of the syringe along its own axis direction; A plurality of knocking rods (8) are horizontally slidably connected to the support frame (1), the plurality of knocking rods (8) are evenly arranged along the sliding direction of the support block (22), and the knocking rods (8) are used to knock the syringe barrel of the syringe, and a control member (9) for controlling the horizontal movement of the knocking rods (8) is provided on the support frame (1); The control member (9) comprises: a control ball (91) fixed to the side wall of the support block (22); a plurality of control blocks (92) respectively fixed to the corresponding knocking rods (8), each of the control blocks (92) being provided with a control arc surface (93) for the control ball (91) to abut against; a plurality of springs (94) respectively provided on the support frame (1) and the corresponding knocking rods (8), the springs (94) being used to control the movement of the control blocks (92) and to enable the knocking rods (8) to knock the syringe barrel; wherein, when the control ball (91) is separated from the corresponding control arc surface (93), the corresponding knocking rod (8) is aligned with the syringe barrel; A receiving block (10) is provided on the support frame (1), and the receiving block (10) is located below the knocking rod (8). An extrusion slope (11) is provided on the upper surface of the receiving block (10), and the extrusion slope (11) is for the push rod of the syringe to abut against. When the support block (22) moves forward, the extrusion slope (11) can press the push rod of the syringe.

2. The analysis liquid filtration and collection system according to claim 1, characterized in that: The transfer mechanism (3) comprises: A transfer shaft (31) is horizontally rotatably connected to the support frame (1); A transfer plate (32) is fixed on the transfer shaft (31); A self-locking motor (33) is fixed on the support frame (1), and the transfer shaft (31) is connected to the output shaft of the self-locking motor (33); There are a plurality of limiting members (34), which are respectively arranged on the side walls of the transfer plate (32), and the plurality of limiting members (34) are evenly distributed along the circumferential direction of the transfer plate (32), and the limiting members (34) are used to fix the syringe; The conveying mechanism (2) is used to transport the syringe to the limiting member (34) located at the bottom of the transfer tray (32), and the piston rod of the bidirectional cylinder (41) is used to press the push rod of the syringe on the limiting member (34) located at the top of the transfer tray (32).

3. The analysis liquid filtering and collecting system according to claim 2, characterized in that: The limiting member (34) comprises: A limiting block (341) is fixed to the side wall of the transfer tray (32); A limiting groove (342) is provided on the side wall of the limiting block (341), and the limiting groove (342) is for the syringe barrel of the syringe to be inserted into; There are two limit bars (343) and they are fixed on the limit blocks (341) respectively. The two limit bars (343) are respectively arranged in an arc shape and are made of elastic material. The inner surface of the limiting groove (342) is matched with the outer surface of the syringe barrel to limit the position of the syringe along its own axis, and the two limiting strips (343) are used to hold the syringe barrel together to prevent the syringe barrel from sliding out of the limiting groove (342).

4. The analysis liquid filtering and collecting system according to claim 3, characterized in that: The conveying mechanism (2) further comprises: There are multiple air suction holes (24) evenly arranged on the support block (22), and the multiple air suction holes (24) are respectively connected to the positioning groove (23); An air suction pipe (25) is provided on the support block (22), and a plurality of air suction holes (24) are respectively connected to the air suction pipe (25); An air pump (26) is provided on the support frame (1), and the air suction pipe (25) is connected to the air suction end of the air pump (26). When the air pump (26) is started, the plurality of air suction holes (24) can form a negative pressure and jointly adsorb and fix the syringe barrel; When the limiting block (341) is located at the bottom of the transfer plate (32), the positioning groove (23) is aligned with the corresponding limiting groove (342), and the support block (22) can push the syringe between the two limiting bars (343) and allow the syringe barrel to enter the limiting groove (342).

5. The analysis liquid filtering and collecting system according to claim 1, characterized in that: The collecting mechanism (5) comprises an electronic balance (51) and an analysis bottle (52), wherein the electronic balance (51) is fixed on the support frame (1), and the analysis bottle (52) is placed on a tray of the electronic balance (51). The analysis bottle (52) is located directly below the bidirectional cylinder (41), and the electronic balance (51) is used to weigh the analysis liquid in the analysis bottle (52).

6. The analysis liquid filtering and collecting system according to claim 5, characterized in that: The top of the piston rod of the bidirectional cylinder (41) is connected to an electronic dial gauge (6), and the electronic dial gauge (6) is used to measure the displacement of the piston rod of the bidirectional cylinder (41).

7. The analysis liquid filtering and collecting system according to claim 6, characterized in that: A controller (7) is provided on the support frame (1); the electronic micrometer (6) and the electronic balance (51) are respectively connected to the controller (7); the controller (7) is used to receive a signal from the electronic balance (51) and control the electronic micrometer (6) to start calculating the displacement of the piston rod of the bidirectional cylinder (41).

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