Auxiliary device of liquid chromatograph

Abstract

The invention relates to the technical field of sample bottle cleaning, in particular to an auxiliary device of a liquid chromatograph, which comprises an overturning unit, a fixed seat and a water collecting box, and the fixed seat is arranged at the top box opening of the water collecting box; a high-pressure spraying unit is arranged at the water collecting box, and a plurality of spraying heads are arranged on the high-pressure spraying unit; a plurality of supporting seats are mounted on the fixed seat, and embedding cavities are formed in the supporting seats; the overturning unit comprises a support, a first gear motor is installed on the support, an output shaft of the first gear motor extends in the horizontal direction and is connected with a rotating seat, electric cylinders are installed on the upper side and the lower side of the rotating seat correspondingly, piston rods of the electric cylinders extend in the vertical direction and are connected with a mounting plate, and a plurality of mounting seats corresponding to the supporting seats one to one are arranged on the mounting plate. A clamping cavity is formed in the mounting seat; the friction force between the side part of the clamping cavity and the sample bottle is greater than the gravity of the sample bottle. The sample bottle has the beneficial effect that the sample bottle can be quickly put into use next time.

Description

Technical Field

[0001] This invention relates to the technical field of sample bottle cleaning, and more specifically to an auxiliary device for a liquid chromatograph. Background Technology

[0002] In biological and chemical research, liquid chromatography is a widely used testing technique that provides crucial information for the structural analysis of compounds. During the testing process, samples are placed in vials for detection. Each experiment requires a large number of sample vials, and if they are not reused, it will result in significant waste. Therefore, cleaning the sample vials is a very important part. Incomplete cleaning or improper cleaning methods will affect the experimental results.

[0003] A search revealed Chinese Patent Publication No. CN210253349U, which discloses a cleaning device for liquid chromatograph vials. The cleaning device includes a housing, a holding plate, a cleaning assembly, and a vacuum pump. The housing has a lid at the top and includes a cleaning chamber and a power chamber. The cleaning chamber has an inlet and an outlet on its lower sides. The holding plate rests against the liquid chromatograph vial at its lower end and against the lid at its upper end. The cleaning assembly consists of several ultrasonic transducers. The vacuum pump is located outside the housing and is connected to the upper part of the cleaning chamber. The purpose of this invention is to solve the problems of poor cleaning effect and high consumption associated with manual cleaning of sample vials, and to provide a cleaning device for liquid chromatograph vials.

[0004] Regarding the aforementioned related technologies, the inventors have discovered the following drawbacks: Before cleaning the sample vials, workers need to invert each vial onto the positioning rod, then close the cleaning chamber and submerge the vials in the cleaning solution before cleaning can begin; after cleaning, workers need to drain the cleaning solution from the chamber, then open the chamber and remove the vials one by one, placing them on a drying rack to drain until they are dry before reuse; these procedures are cumbersome and the overall process is time-consuming, hindering the rapid reuse of the vials, thus requiring improvement. Summary of the Invention

[0005] To address the aforementioned problems, embodiments of the present invention provide an auxiliary device for a liquid chromatograph, enabling sample vials to be quickly put into use again.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: an auxiliary device for a liquid chromatograph, comprising a flipping unit, a fixing base, and a water collection box, wherein the fixing base is located at the top opening of the water collection box;

[0007] A high-pressure spray unit is installed at the water collection box, and the high-pressure spray unit is equipped with several spray heads arranged circumferentially around the axis of the water collection box.

[0008] The fixed base is equipped with several support seats that correspond one-to-one with the spray head. The support seats are provided with embedding cavities for the bottle mouth of the sample bottle to be inserted upside down. The spray head is used to spray high-pressure water mist into the sample bottle inside the embedding cavity.

[0009] The flipping unit includes a bracket, on which a first geared motor is mounted. The output shaft of the first geared motor extends horizontally and is connected to a rotating seat. Electric cylinders are mounted on both the upper and lower sides of the rotating seat. The piston rods of the electric cylinders extend vertically and are connected to a mounting plate. The mounting plate is provided with several mounting seats that correspond one-to-one with the support seat. The mounting seat is provided with a clamping cavity for inserting the bottom of the sample bottle. The friction between the side of the clamping cavity and the sample bottle is greater than the weight of the sample bottle.

[0010] The first geared motor can drive the rotating seat to rotate, so that the mounting seat on the lower side of the rotating seat moves to the top of the corresponding support seat. The electric cylinder can push the mounting plate to move, so that the sample bottle in the clamping cavity moves in and out of the embedding cavity.

[0011] Optionally, the high-pressure spray unit includes a fixed plate installed in a water collection box. The interior of the fixed plate is hollow and connected to all spray heads. The interior of the fixed plate is connected to a water inlet pipe and a high-pressure air pipe through a connecting pipe. The water inlet pipe is connected to a water pump, and the high-pressure air pipe is connected to a heating box. The heating box is connected to a high-pressure air pump.

[0012] Optionally, a liquid flow meter is installed on the water inlet pipe, and a gas flow meter is installed on the high-pressure gas pipe;

[0013] It also includes a controller, and the liquid flow meter, gas flow meter, water pump, high-pressure air pump and heating box are all coupled to the controller;

[0014] When the liquid flow meter detects that the liquid flow rate has reached the specified value, the liquid flow meter will send a drying signal to the controller, and the controller will control the water pump to shut down, the heating box to turn on, and the liquid flow meter to return to zero.

[0015] When the gas flow meter detects that the gas flow rate has reached the specified value, the gas flow meter will send a stop signal to the controller, and the controller will control the high-pressure gas pump to shut down, the heating box to shut down, and the gas flow meter to return to zero.

[0016] Optionally, the mounting base is rotatably connected to the mounting plate about its axis, and the fixed plate is provided with a drive unit for driving all the mounting bases on the lower side of the rotating base to rotate.

[0017] Once the sample vial is inserted into the cavity, the spray head will align with the off-center point of the sample vial opening.

[0018] Optionally, the drive unit includes a second geared motor mounted on a fixed plate. The output shaft of the second geared motor is coaxially arranged with the water collection box and coaxially connected to a plug rod. A sleeve is slidably sleeved on the plug rod. The sleeve is rotatably connected to the mounting plate around its own axis. A drive gear is coaxially connected to the sleeve. Several driven gears mesh on the drive gear. Each driven gear corresponds to a mounting seat on the lower side of the rotating seat. The corresponding driven gear and the mounting seat are coaxially connected.

[0019] When the electric cylinder pushes the mounting plate to move, causing the sample bottle in the mounting base to be inserted into the embedding cavity, the sleeve will be fitted onto the insertion rod. At this time, the second reduction motor can drive the sleeve to rotate through the insertion rod.

[0020] Optionally, the first geared motor, the electric cylinder, and the second geared motor are all coupled to the controller, and the controller is equipped with a start button;

[0021] When the start button is pressed, the controller will first control the piston rod of the cylinder on the lower side of the rotating seat to retract, so that the sample bottle on the lower side of the rotating seat is disengaged from the embedding cavity. Then, it will control the first reduction motor to drive the rotating seat to rotate 180°. Finally, it will control the piston rod of the cylinder on the lower side of the rotating seat to extend, so that the sample bottle on the lower side of the rotating seat is embedded into the embedding cavity.

[0022] Optionally, a contact sensor is installed on the fixed base for a mounting plate located under the rotating base to flip and contact with it; the contact sensor is coupled to the controller.

[0023] When the sample vial under the rotating seat is inserted into the embedding cavity, the mounting plate under the rotating seat will abut against the contact sensor. The contact sensor will send a cleaning signal to the controller, which will then control the second geared motor, water pump, and high-pressure air pump to start.

[0024] Optionally, when the controller receives a stop signal, the controller will control the second geared motor to shut down.

[0025] Optionally, the bottom of the water collection box is connected to a drain pipe, and an on / off valve is installed on the drain pipe.

[0026] Optionally, a one-way valve is installed on both the water inlet pipe and the high-pressure air pipe.

[0027] The beneficial effects of the embodiments of the present invention are as follows:

[0028] 1. During the sample bottle cleaning process, the drive unit will drive the sample bottle to be cleaned to rotate, and the spray head will spray high-pressure water mist and high-pressure hot air into the sample bottle, realizing the comprehensive cleaning and drying of the sample bottle.

[0029] 2. When the sample vials located on the lower side of the rotating seat are being cleaned, the bottom of the sample vials in the embedded cavity will be inserted into the clamping cavity, ensuring the stability of the sample vials during cleaning. At this time, the worker can place the next batch of sample vials to be cleaned in advance in the clamping cavity on the upper side of the rotating seat for the rapid cleaning of the next batch of sample vials. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0031] Figure 2 This is a cross-sectional view of the interior of the water collection box in an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the structure of the mounting plate and the fixing base in the embodiments of this application;

[0033] Figure 4 This is a cross-sectional structural diagram of the water collection box, mounting plate, and fixing base in an embodiment of this application.

[0034] Reference numerals: 1. Water collection box; 11. Drain pipe; 12. On / off valve; 2. Fixed base; 21. Support base; 22. Embedded cavity; 23. Support rod; 3. Tilting unit; 31. Bracket; 32. First geared motor; 33. Rotating seat; 34. Electric cylinder; 35. Mounting plate; 36. Mounting base; 37. Clamping cavity; 38. Contact sensor; 4. High-pressure spray unit; 41. Spray head; 42. Fixed plate; 43. Connecting pipe; 44. Water inlet pipe; 441. Liquid flow meter; 45. Water pump; 46. High-pressure air pipe; 461. Gas flow meter; 47. Heating box; 48. High-pressure air pump; 49. One-way valve; 5. Drive unit; 51. Second geared motor; 52. Insert rod; 53. Sleeve; 54. Drive gear; 55. Driven gear; 6. Controller. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0036] See Figure 1-4 This invention discloses an auxiliary device for a liquid chromatograph. For example... Figure 1 As shown, an auxiliary device for a liquid chromatograph includes a flipping unit 3, a fixing base 2, and a water collection box 1. The fixing base 2 is installed at the top opening of the water collection box 1 by multiple support rods 23.

[0037] like Figure 2As shown, the water collection box 1 is circular, and a high-pressure spray unit 4 is provided at the water collection box 1. The top of the high-pressure spray unit 4 is provided with several spray heads 41 arranged circumferentially around the axis of the water collection box 1.

[0038] The fixed base 2 is equipped with several support bases 21 that correspond one-to-one with the spray head 41. The support base 21 is provided with an embedding cavity 22. The mouth of the sample bottle can be inserted into the embedding cavity 22 upside down. The high-pressure spray unit 4 can spray high-pressure water mist into the sample bottle inside the embedding cavity 22 through the spray head 41, thereby realizing the cleaning of the sample bottle.

[0039] like Figure 2 and Figure 4 As shown, the high-pressure spray unit 4 includes a fixed plate 42 installed in the water collection box 1. The interior of the fixed plate 42 is hollow and connected to all the spray heads 41. The interior of the fixed plate 42 is connected to a water inlet pipe 44 and a high-pressure air pipe 46 through a connecting pipe 43. The water inlet pipe 44 is connected to a water pump 45, and the high-pressure air pipe 46 is connected to a heating box 47. The heating box 47 is connected to a high-pressure air pump 48.

[0040] During the sample bottle cleaning process, water pump 45 and high-pressure air pump 48 will be started. Water pump 45 will introduce water into connecting pipe 43 through water inlet pipe 44, and high-pressure air pump 48 will introduce high-pressure gas into connecting pipe 43 through high-pressure air pipe 46. The water and high-pressure gas will collide with each other and enter the spray head 41 through the inside of fixed plate 42. Spray head 41 will spray high-pressure water mist into the sample bottle. The water inside the sample bottle will flow directly downward into water collection box 1 for collection.

[0041] After the sample vials are cleaned, the water pump 45 will be turned off and the heating chamber 47 will be turned on. The high-pressure gas ejected by the high-pressure air pump 48 will be heated by the heating chamber 47 and then sprayed into the sample vials through the spray head 41, so that the sample vials can be dried quickly and can be put into use again quickly.

[0042] It is worth noting that when the heated high-pressure gas is ejected, the residual water inside the connecting pipe 43, the fixed plate 42, and the spray head 41 will be pushed out by the high-pressure gas to prevent the device from becoming damp and breeding bacteria due to prolonged disuse.

[0043] The bottom of the water collection box 1 is connected to a drain pipe 11, and an on / off valve 12 is installed on the drain pipe 11 to allow wastewater in the water collection box 1 to be discharged.

[0044] Both the water inlet pipe 44 and the high-pressure gas pipe 46 are equipped with one-way valves 49, which allow water and high-pressure gas to flow in only one direction.

[0045] like Figure 1 and Figure 3As shown, the flipping unit 3 includes a bracket 31, on which a first reduction motor 32 is mounted. The output shaft of the first reduction motor 32 extends horizontally and is connected to a rotating seat 33. The rotating seat 33 is rotatably connected to the bracket 31, and electric cylinders 34 are mounted on both the upper and lower sides of the rotating seat 33. The piston rod of the electric cylinder 34 extends vertically and is connected to a mounting plate 35. The mounting plate 35 is provided with a plurality of mounting seats 36 corresponding one-to-one with the support seat 21. The mounting seat 36 is provided with a clamping cavity 37 for inserting the bottom of the sample bottle.

[0046] When the sample vials located under the rotating seat 33 are cleaned, the bottom of the sample vials in the embedded cavity 22 will be inserted into the clamping cavity 37, ensuring the stability of the sample vials during cleaning. At this time, the worker can place the next batch of sample vials to be cleaned in advance in the clamping cavity 37 on the upper side of the rotating seat 33 for the rapid cleaning of the next batch of sample vials.

[0047] After the sample vials are cleaned and dried, the electric cylinder 34 on the lower side of the rotating seat 33 will drive the mounting base 36 to move, causing the sample vials on the lower side of the rotating seat 33 to detach from the embedding cavity 22. Then, the first reduction motor 32 will drive the rotating seat 33 to rotate 180°, so that the sample vials on the upper and lower sides of the rotating seat 33 will interchange positions. Because the friction between the side of the clamping cavity 37 and the sample vials is greater than the weight of the sample vials, the sample vials will not fall off the clamping cavity 37 during the rotation. Subsequently, the electric cylinder 34 on the lower side of the rotating seat 33 will push the mounting plate 35 to move, so that the sample vials in the clamping cavity 37 on the lower side of the rotating seat 33 will be inserted into the embedding cavity 22, and the cleaned and dried sample vials on the upper side of the rotating seat 33 can be removed and unloaded.

[0048] like Figure 4 As shown, the mounting base 36 is rotatably connected to the mounting plate 35 around its axis. The fixed disk 42 is provided with a drive unit 5. The drive unit 5 includes a second reduction motor 51 mounted on the fixed disk 42. The output shaft of the second reduction motor 51 is coaxially arranged with the water collection box 1 and coaxially connected to the insertion rod 52. A sleeve 53 is slidably sleeved on the insertion rod 52. The sleeve 53 is rotatably connected to the mounting plate 35 around its own axis, and a drive gear 54 is coaxially connected to the sleeve 53. Several driven gears 55 mesh on the drive gear 54. The driven gears 55 correspond one-to-one with the mounting base 36 on the lower side of the rotating seat 33. The corresponding driven gears 55 and the mounting base 36 are coaxially connected.

[0049] When the sample bottle is inserted into the embedding cavity 22, the spray head 41 will be aligned with the off-center part of the sample bottle opening. When the electric cylinder 34 pushes the mounting plate 35 to move, so that the sample bottle in the mounting base 36 is inserted into the embedding cavity 22, the sleeve 53 will be sleeved on the insertion rod 52. At this time, the second reduction motor 51 can drive the sleeve 53 to rotate through the insertion rod 52. The sleeve 53 will drive the mounting base 36 to rotate through the driving gear 54 and the driven gear 55. The mounting base 36 will drive the sample bottle to rotate, so that the spray head 41 can rinse and dry various positions inside the sample bottle, thereby improving the cleaning and drying effect of the sample bottle.

[0050] like Figure 1 and Figure 4 As shown, a liquid flow meter 441 is installed on the water inlet pipe 44, and a gas flow meter 461 is installed on the high-pressure gas pipe 46; a controller 6 is provided on the outside of the water collection box 1, and a start button is provided on the controller 6; a contact sensor 38 is installed on the fixed base 2 for the mounting plate 35 located under the rotating base 33 to flip and contact; the liquid flow meter 441, the gas flow meter 461, the water pump 45, the high-pressure gas pump 48, the heating box 47, the first reduction motor 32, the electric cylinder 34, the second reduction motor 51 and the contact sensor 38 are all coupled to the controller 6.

[0051] The working principle of this invention is as follows: When the sample vials need cleaning, the sample vials to be cleaned are inserted one by one into the embedding cavity 22 on the upper side of the rotating seat 33. The worker presses the start button. At this time, the controller 6 first controls the piston rod of the cylinder on the lower side of the rotating seat 33 to retract, so that the cleaned sample vials on the lower side of the rotating seat 33 are disengaged from the embedding cavity 22. The controller 6 then controls the first reduction motor 32 to drive the rotating seat 33 to rotate 180°, so that the sample vials on the upper and lower sides of the rotating seat 33 interchange positions. Then, the controller 6 controls the piston rod of the cylinder on the lower side of the rotating seat 33 to extend, so that the mounting plate 35 pushes the sample vials on the lower side of the rotating seat 33 into the embedding cavity 22, realizing the automatic feeding of the sample vials to be cleaned and the automatic unloading of the sample vials after cleaning and drying. At this time, the mounting plate 35 on the lower side of the rotating seat 33 will abut against the contact The contact sensor 38 sends a cleaning signal to the controller 6. The controller 6 then starts the second geared motor 51, the water pump 45, and the high-pressure air pump 48. The second geared motor 51 drives the sleeve 53 to rotate via the insert rod 52. The sleeve 53 drives the mounting base 36 to rotate via the drive gear 54 and the driven gear 55. The mounting base 36 then rotates the sample bottle. The water pump 45 introduces water into the connecting pipe 43 through the inlet pipe 44. The high-pressure air pump 48 introduces high-pressure gas into the connecting pipe 43 through the high-pressure air pipe 46. The water and high-pressure gas collide with each other and enter the spray head 41 through the fixed plate 42. The spray head 41 sprays high-pressure water mist into the sample bottle, achieving a thorough cleaning of the inside of the sample bottle. The water inside the sample bottle flows directly downwards into the water collection box 1 for collection.

[0052] When the liquid flow meter 441 detects that the liquid flow rate has reached the specified value, it means that the sample bottle has been cleaned. The liquid flow meter 441 will send a drying signal to the controller 6. The controller 6 will control the water pump 45 to turn off, the heating box 47 to turn on, and the liquid flow meter 441 to return to zero. The water inlet pipe 44 will no longer supply water into the connecting pipe 43. The high-pressure gas ejected by the high-pressure air pump 48 will be heated by the heating box 47 and then sprayed into the sample bottle through the spray head 41, so that the sample bottle can be dried quickly.

[0053] When the gas flow meter 461 detects that the gas flow rate has reached the specified value, it means that the sample bottle has been dried. The gas flow meter 461 will send a stop signal to the controller 6, and the controller 6 will control the high-pressure gas pump 48 to shut down, the heating box 47 to shut down, the second reduction motor 51 to shut down, and the gas flow meter 461 to return to zero, thereby effectively saving energy.

[0054] In summary, the worker only needs to place the sample bottles to be cleaned into the clamping cavity 37 on the upper side of the rotating seat 33, and this application can automatically feed the sample bottles to be cleaned, thoroughly clean the sample bottles to be cleaned, thoroughly dry the sample bottles to be cleaned, and automatically unload the cleaned and dried sample bottles, so that the sample bottles can be quickly put into use again. In addition, while the sample bottles on the lower side of the rotating seat 33 are being cleaned and dried, the worker can prepare the next batch of sample bottles to be cleaned in advance into the clamping cavity 37 on the upper side of the rotating seat 33, so that this application can quickly clean the next batch of sample bottles.

[0055] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0058] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An auxiliary device for a liquid chromatograph, characterized in that, It includes a flipping unit (3), a fixing base (2) and a water collection box (1), with the fixing base (2) located at the top opening of the water collection box (1); A high-pressure spray unit (4) is provided at the water collection box (1), and a number of spray heads (41) are arranged circumferentially around the axis of the water collection box (1) on the high-pressure spray unit (4); The fixed base (2) is equipped with several support bases (21) that correspond one-to-one with the spray head (41). The support base (21) is provided with an embedding cavity (22) for inserting the bottle mouth of the sample bottle upside down. The spray head (41) is used to spray high-pressure water mist into the sample bottle inside the embedding cavity (22). The flipping unit (3) includes a bracket (31), on which a first geared motor (32) is mounted. The output shaft of the first geared motor (32) extends horizontally and is connected to a rotating seat (33). Electric cylinders (34) are mounted on both the upper and lower sides of the rotating seat (33). The piston rod of the electric cylinder (34) extends vertically and is connected to a mounting plate (35). The mounting plate (35) is provided with several mounting seats (36) that correspond one-to-one with the support seat (21). The mounting seat (36) is provided with a clamping cavity (37) for inserting the bottom of the sample bottle. The friction between the side of the clamping cavity (37) and the sample bottle is greater than the weight of the sample bottle. The first geared motor (32) can drive the rotating seat (33) to rotate, so that the mounting seat (36) on the lower side of the rotating seat (33) moves to the top of the corresponding support seat (21), and the electric cylinder (34) can push the mounting plate (35) to move, so that the sample bottle in the clamping cavity (37) enters and exits the embedding cavity (22).

2. The auxiliary device for a liquid chromatograph according to claim 1, characterized in that, The high-pressure spray unit (4) includes a fixed plate (42) installed in the water collection box (1). The interior of the fixed plate (42) is hollow and connected to all spray heads (41). The interior of the fixed plate (42) is connected to a water inlet pipe (44) and a high-pressure air pipe (46) through a connecting pipe (43). The water inlet pipe (44) is connected to a water pump (45). The high-pressure air pipe (46) is connected to a heating box (47). The heating box (47) is connected to a high-pressure air pump (48).

3. An auxiliary device for a liquid chromatograph according to claim 2, characterized in that, A liquid flow meter (441) is installed on the water inlet pipe (44), and a gas flow meter (461) is installed on the high-pressure gas pipe (46); It also includes a controller (6), a liquid flow meter (441), a gas flow meter (461), a water pump (45), a high-pressure air pump (48), and a heating box (47), all of which are coupled to the controller (6); When the liquid flow meter (441) detects that the liquid flow rate has reached the specified value, the liquid flow meter (441) will send a drying signal to the controller (6), and the controller (6) will control the water pump (45) to shut down, the heating box (47) to turn on, and the liquid flow meter (441) to return to zero. When the gas flow meter (461) detects that the gas flow rate has reached the specified value, the gas flow meter (461) will send a stop signal to the controller (6), and the controller (6) will control the high-pressure gas pump (48) to shut down, the heating box (47) to shut down, and the gas flow meter (461) to return to zero.

4. An auxiliary device for a liquid chromatograph according to claim 3, characterized in that, The mounting base (36) is rotatably connected to the mounting plate (35) around its axis, and the fixed disk (42) is provided with a drive unit (5) for driving all the mounting bases (36) under the rotating base (33) to rotate. When the sample bottle is inserted into the embedding cavity (22), the spray head (41) will be aligned with the off-center part of the sample bottle opening.

5. An auxiliary device for a liquid chromatograph according to claim 4, characterized in that, The drive unit (5) includes a second geared motor (51) mounted on a fixed disk (42). The output shaft of the second geared motor (51) is coaxially arranged with the water collection box (1) and coaxially connected to a plug rod (52). A sleeve (53) is slidably sleeved on the plug rod (52). The sleeve (53) is rotatably connected to the mounting plate (35) around its own axis. A drive gear (54) is coaxially connected to the sleeve (53). Several driven gears (55) mesh on the drive gear (54). The driven gears (55) correspond one-to-one with the mounting base (36) on the lower side of the rotating seat (33). The corresponding driven gears (55) and the mounting base (36) are coaxially connected. When the electric cylinder (34) pushes the mounting plate (35) to move, so that the sample bottle in the mounting base (36) is inserted into the embedding cavity (22), the sleeve (53) will be fitted onto the insertion rod (52). At this time, the second reduction motor (51) can drive the sleeve (53) to rotate through the insertion rod (52).

6. An auxiliary device for a liquid chromatograph according to claim 5, characterized in that, The first geared motor (32), the electric cylinder (34), and the second geared motor (51) are all coupled to the controller (6), and the controller (6) is equipped with a start button; When the start button is pressed, the controller (6) will first control the piston rod of the cylinder under the rotating seat (33) to retract, so that the sample bottle under the rotating seat (33) is disengaged from the embedding cavity (22), then control the first reduction motor (32) to drive the rotating seat (33) to rotate 180°, and then control the piston rod of the cylinder under the rotating seat (33) to extend, so that the sample bottle under the rotating seat (33) is embedded into the embedding cavity (22).

7. An auxiliary device for a liquid chromatograph according to claim 6, characterized in that, The fixed base (2) is equipped with a contact sensor (38) that is flipped and contacted by the mounting plate (35) located under the rotating base (33). The contact sensor (38) is coupled to the controller (6). When the sample bottle under the rotating seat (33) is embedded in the embedding cavity (22), the mounting plate (35) under the rotating seat (33) will abut against the contact sensor (38), and the contact sensor (38) will send a cleaning signal to the controller (6). The controller (6) will control the second reduction motor (51), water pump (45) and high-pressure air pump (48) to start.

8. An auxiliary device for a liquid chromatograph according to claim 7, characterized in that, When the controller (6) receives a stop signal, the controller (6) will control the second geared motor (51) to shut down.

9. An auxiliary device for a liquid chromatograph according to claim 1, characterized in that, The bottom of the water collection box (1) is connected to a drain pipe (11), and an on / off valve (12) is installed on the drain pipe (11).

10. An auxiliary device for a liquid chromatograph according to claim 1, characterized in that, One-way valves (49) are installed on both the water inlet pipe (44) and the high-pressure air pipe (46).

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