Auxiliary device of liquid chromatograph

Abstract

The utility model 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 a 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 utility model has the beneficial effect that the sample bottle can be quickly put into use next time.

Description

Technical Field

[0001] The utility model relates to the technical field of sample bottle cleaning, in particular to an auxiliary device of a liquid chromatograph. Background Art

[0002] In scientific research related to biology and chemistry, liquid chromatography is a widely used testing technology that provides very important information for the structural analysis of compounds. During the test, the samples are placed in injection vials for testing. Each experiment requires a large number of sample vials. If they are not reused, it will cause a lot of waste. Therefore, the cleaning of the sample vials is a very important part. If the cleaning is not thorough or the cleaning method is improper, it will affect the experimental results.

[0003] Through searching, Chinese patent announcement number CN210253349U discloses a cleaning device for liquid chromatograph vials, the cleaning device includes a box, a holding plate, a cleaning component and a vacuum pump, the top of the box is provided with a box cover, the box includes a cleaning chamber and a power chamber, the lower sides of the cleaning chamber are respectively provided with a liquid inlet and a liquid outlet, the lower end of the holding plate is against the liquid chromatograph vials, and the upper end is against the box cover, the cleaning component is a plurality of ultrasonic vibrators, the vacuum pump is arranged outside the box, and the vacuum pump is connected to the upper part of the cleaning chamber. The purpose of the utility model is to solve the problem of poor cleaning effect and high consumption of manual cleaning of sample bottles, and to provide a cleaning device for liquid chromatograph vials.

[0004] With respect to the above-mentioned related technologies, the inventors found the following defects: before cleaning the sample bottles, workers need to first turn the sample bottles upside down on the positioning rods one by one, and then close the cleaning chamber and allow the cleaning liquid to submerge the sample bottles before cleaning the sample bottles; after cleaning the sample bottles, workers need to first release the cleaning liquid in the cleaning chamber, and then open the cleaning chamber and take out the sample bottles one by one, and then place the sample bottles on the drain rack for draining, and the sample bottles can be reused only after they are dry; the above-mentioned operating steps are relatively cumbersome, and the overall process is relatively time-consuming, which affects the rapid use of the sample bottles for the next time, and therefore needs to be improved. Utility Model Content

[0005] In order to solve the above problems, the embodiment of the utility model provides an auxiliary device for a liquid chromatograph, so that the sample bottle can be quickly put into next use.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: an auxiliary device of a liquid chromatograph, comprising a flip unit, a fixing seat and a water collecting box, wherein the fixing seat is arranged at the top box opening of the water collecting box;

[0007] A high-pressure spray unit is provided at the water collection box, and a plurality of spray heads are arranged circumferentially around the axis of the water collection box on the high-pressure spray unit;

[0008] A plurality of support seats corresponding to the spray heads are installed on the fixed seat, and an embedding cavity is provided on the support seat for the mouth of the sample bottle to be inserted in an inverted manner. The spray head is used to spray high-pressure water mist into the interior of the sample bottle in the embedding cavity;

[0009] The flip unit includes a bracket, a first reduction motor is installed on the bracket, an output shaft of the first reduction motor extends in the horizontal direction and is connected to a rotating seat, electric cylinders are installed on both upper and lower sides of the rotating seat, a piston rod of the electric cylinder extends in the vertical direction and is connected to a mounting plate, a plurality of mounting seats corresponding to the support seats are arranged on the mounting plate, a clamping cavity for inserting the bottom of the sample bottle is arranged on the mounting seat, and the friction between the side of the clamping cavity and the sample bottle is greater than the gravity of the sample bottle;

[0010] The first reduction motor can drive the rotating seat to flip, so that the mounting seat on the lower side of the rotating seat moves to the top of the corresponding supporting seat, and 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] The bottom of the water collecting box is connected with a drainage pipe, and an opening and closing valve is installed on the drainage pipe;

[0012] Check valves are installed on both the water inlet pipe and the high-pressure air pipe.

[0013] Optionally, the high-pressure spray unit includes a fixed plate installed in a water collecting 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, the high-pressure air pipe is connected to a heating box, and the heating box is connected to a high-pressure air pump.

[0014] 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;

[0015] Also included is a controller, the liquid flow meter, the gas flow meter, the water pump, the high-pressure air pump and the heating box are all coupled to the controller;

[0016] When the liquid flow meter detects that the liquid flow reaches the specified value, the liquid flow meter will send a drying signal to the controller, and the controller will control the water pump to turn off, the heating box to turn on, and the liquid flow meter to return to zero;

[0017] When the gas flow meter detects that the gas flow reaches 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 turn off, the heating box to turn off, and the gas flow meter to return to zero.

[0018] Optionally, the mounting seat is connected to the mounting plate in rotation about its axis, and a driving unit for driving all mounting seats on the lower side of the rotating seat to rotate is provided on the fixed plate;

[0019] When the sample bottle is inserted into the embedded cavity, the spray head will correspond to the eccentric position of the mouth of the sample bottle.

[0020] Optionally, the driving unit includes a second reduction motor mounted on the fixed disk, the output shaft of the second reduction motor is coaxially arranged with the water collecting box and coaxially connected with 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, and a driving gear is coaxially connected to the sleeve, a plurality of driven gears are meshed on the driving gear, the driven gears correspond one to one with the mounting seat on the lower side of the rotating seat, and the corresponding driven gears are coaxially connected with the mounting seat;

[0021] When the electric cylinder pushes the mounting plate to move so that the sample bottle in the mounting seat is inserted into the embedding cavity, the sleeve will be sleeved on the insertion rod. At this time, the second reduction motor can drive the sleeve to rotate through the insertion rod.

[0022] Optionally, the first reduction motor, the electric cylinder and the second reduction motor are all coupled to a controller, and a start button is provided on the controller;

[0023] 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 separated from the embedding cavity, and then control the first reduction motor to drive the rotating seat to flip 180°, and then 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 in the embedding cavity.

[0024] Optionally, a contact sensor is mounted on the fixed seat for the mounting plate located at the lower side of the rotating seat to turn over and abut against, and the contact sensor is coupled to the controller;

[0025] When the sample bottle on the lower side of the rotating seat is embedded in the embedding cavity, the mounting plate on the lower side of the rotating seat will contact the contact sensor, and the contact sensor will send a cleaning signal to the controller, and the controller will control the second reduction motor, water pump and high-pressure air pump to start.

[0026] Optionally, when the controller receives a stop signal, the controller will control the second reduction motor to turn off.

[0027] The beneficial effects of the embodiments of the utility model are:

[0028] 1. During the cleaning process of the sample bottle, the driving 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 comprehensive cleaning and drying of the sample bottle;

[0029] 2. When the sample bottles located on the lower side of the rotating seat are cleaned, the bottom of the sample bottles in the embedded cavity will be inserted into the clamping cavity, ensuring the stability of the sample bottles when they are cleaned. At this time, the worker can place the next batch of sample bottles to be cleaned in the clamping cavity on the upper side of the rotating seat in advance to facilitate the rapid cleaning of the next batch of sample bottles. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the cross-sectional structure of the interior of the water collecting box in the embodiment of the present application;

[0032] Figure 3 It is a schematic diagram of the structure of the mounting plate and the fixing seat in the embodiment of the present application;

[0033] Figure 4 It is a schematic cross-sectional structural diagram of the water collecting box, the mounting plate and the fixing seat in the embodiment of the present application.

[0034] 1. Water collecting box; 2. Drain pipe; 3. Opening and closing valve; 4. Fixed seat; 5. Support seat; 6. Embedded cavity; 7. Support rod; 8. Flipping unit; 9. Bracket; 10. First reduction motor; 11. Rotating seat; 12. Electric cylinder; 13. Mounting plate; 14. Mounting seat; 15. Clamping cavity; 16. Contact sensor; 17. High-pressure spray unit; 18. Spray head; 19. Fixed plate; 20. Connecting pipe; 21. Water inlet pipe; 22. Liquid flow meter; 23. Water pump; 24. High-pressure air pipe; 25. Gas flow meter; 26. Heating box; 27. High-pressure air pump; 28. One-way valve; 29. ​​Driving unit; 30. Second reduction motor; 31. Insert rod; 32. Sleeve; 33. Driving gear; 34. Drive gear; 35. Driven gear; 36. Driven gear; 37. Controller. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0036] See also Figure 1-4 The utility model embodiment discloses an auxiliary device for a liquid chromatograph. Figure 1 As shown, an auxiliary device of a liquid chromatograph comprises a flip unit 3, a fixing base 2 and a water collecting box 1, wherein the fixing base 2 is installed at the top box opening of the water collecting box 1 through a plurality of supporting rods 23.

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

[0038] A plurality of support seats 21 corresponding to the spray heads 41 are installed on the fixed seat 2, and an embedding cavity 22 is provided on the support seat 21. The mouth of the sample bottle can be inserted inverted into the embedding cavity 22. The high-pressure spray unit 4 can spray high-pressure water mist into the interior of the sample bottle in the embedding cavity 22 through the spray head 41, thereby achieving cleaning of the interior 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 collecting 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. 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, the water pump 45 and the high-pressure air pump 48 will be started, the water pump 45 will introduce water into the connecting pipe 43 through the water inlet pipe 44, and the high-pressure air pump 48 will introduce high-pressure gas into the connecting pipe 43 through the high-pressure gas pipe 46. The water and the high-pressure gas will collide with each other and enter the spray head 41 through the inside of the fixed plate 42. The spray head 41 will spray high-pressure water mist into the sample bottle, and the water inside the sample bottle will directly flow downward into the water collecting box 1 for collection.

[0041] After the sample bottle is cleaned, the water pump 45 will be turned off, the heating box 47 will be turned on, and the high-pressure gas sprayed by the high-pressure air pump 48 will be sprayed into the sample bottle through the spray head 41 after being heated by the heating box 47, so that the sample bottle can be quickly dried so that the sample bottle can be quickly put into next use.

[0042] It is worth noting that when the heated high-pressure gas is ejected, the residual water inside the connecting pipe 43, the fixing plate 42 and the spray head 41 will be pushed out by the high-pressure gas to prevent the device from breeding bacteria due to moisture due to long-term non-use.

[0043] The bottom of the water collecting box 1 is connected to a drain pipe 11 , and an opening and closing valve 12 is installed on the drain pipe 11 so that the waste water in the water collecting box 1 can be discharged.

[0044] One-way valves 49 are installed on both the water inlet pipe 44 and the high-pressure gas pipe 46, so that water and high-pressure gas can only flow in one direction.

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

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

[0047] When the sample bottle is cleaned and dried, the electric cylinder 34 on the lower side of the rotating seat 33 will drive the mounting seat 36 to move, so that the sample bottle on the lower side of the rotating seat 33 is separated from the embedding cavity 22; then the first reduction motor 32 will drive the rotating seat 33 to flip 180 degrees, so that the sample bottles on the upper and lower sides of the rotating seat 33 are interchanged. Because the friction between the side of the clamping cavity 37 and the sample bottle is greater than the gravity of the sample bottle, the sample bottle will not fall from the clamping cavity 37 during the flipping process; then 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 bottle in the clamping cavity 37 on the lower side of the rotating seat 33 is inserted into the embedding cavity 22, and the cleaned and dried sample bottle located on the upper side of the rotating seat 33 can be taken out for unloading.

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

[0049] When the sample bottle is inserted into the embedding cavity 22, the spray head 41 will correspond to the eccentric point of the mouth of the sample bottle; when the electric cylinder 34 pushes the mounting plate 35 to move, so that the sample bottle in the mounting seat 36 is inserted into the embedding cavity 22, the sleeve 53 will be sleeved on the insertion rod 52, and the second reduction motor 51 can drive the sleeve 53 to rotate through the insertion rod 52, and the sleeve 53 will drive the mounting seat 36 to rotate through the driving gear 54 and the driven gear 55, and the mounting seat 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 effects 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 collecting box 1, and a start button is provided on the controller 6; a contact sensor 38 is installed on the fixed seat 2 for the mounting plate 35 located on the lower side of the rotating seat 33 to flip and resist, and the liquid flow meter 441, the gas flow meter 461, the water pump 45, the high-pressure air 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 the utility model is as follows: when the sample bottles need to be cleaned, the sample bottles to be cleaned will be inserted one by one into the embedding cavity 22 on the upper side of the rotating seat 33, and the worker will press the start button. At this time, the controller 6 will first control the piston rod of the cylinder on the lower side of the rotating seat 33 to retract, so that the cleaned sample bottles on the lower side of the rotating seat 33 are separated from the embedding cavity 22; the controller 6 then controls the first reduction motor 32 to drive the rotating seat 33 to flip 180°, so that the sample bottles on the upper and lower sides of the rotating seat 33 are interchanged; 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 bottles on the lower side of the rotating seat 33 to be embedded in the embedding cavity 22, thereby realizing the automatic loading of the sample bottles to be cleaned and the automatic unloading of the sample bottles that have been cleaned and dried; at this time, the mounting plate 35 on the lower side of the rotating seat 33 will abut against the receiving The touch sensor 38 will transmit a cleaning signal to the controller 6, and the controller 6 will control the second reduction motor 51, the water pump 45 and the high-pressure air pump 48 to start. The second reduction motor 51 will drive the sleeve 53 to rotate through the insertion rod 52, and the sleeve 53 will drive the mounting seat 36 to rotate through the driving gear 54 and the driven gear 55, and the mounting seat 36 will drive the sample bottle to rotate; the water pump 45 will pass water into the connecting pipe 43 through the water inlet pipe 44, and the high-pressure air pump 48 will pass high-pressure gas into the connecting pipe 43 through the high-pressure gas pipe 46. The water and the high-pressure gas will collide with each other and enter the spray head 41 through the inside of the fixed plate 42. The spray head 41 will spray high-pressure water mist into the inside of the sample bottle, thereby achieving comprehensive cleaning of the inside of the sample bottle. The water inside the sample bottle will directly flow downward into the water collecting box 1 for collection.

[0052] When the liquid flow meter 441 detects that the liquid flow reaches 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 let water into the connecting pipe 43. The high-pressure gas sprayed 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 quickly dried.

[0053] When the gas flow meter 461 detects that the gas flow reaches 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. The controller 6 will control the high-pressure air pump 48 to turn off, the heating box 47 to turn off, the second reduction motor 51 to turn off, and the gas flow meter 461 to return to zero, thereby effectively saving energy.

[0054] To summarize, 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 the present application can complete the automatic loading of the sample bottles to be cleaned, the comprehensive cleaning of the sample bottles to be cleaned, the comprehensive drying of the sample bottles to be cleaned, and the automatic unloading of the sample bottles that have been cleaned and dried, so that the sample bottles can be quickly put into use next time; in addition, when the sample bottles on the lower side of the rotating seat 33 are cleaned and dried, the worker can prepare the next batch of sample bottles to be cleaned in the clamping cavity 37 on the upper side of the rotating seat 33 in advance, so that the present application can quickly clean the next batch of sample bottles.

[0055] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

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

[0058] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle 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 these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An auxiliary device for a liquid chromatograph, characterized in that: It comprises a turning unit (3), a fixing seat (2) and a water collecting box (1), wherein the fixing seat (2) is arranged at the top box opening of the water collecting box (1); A high-pressure spray unit (4) is provided at the water collection box (1), and a plurality of spray heads (41) are provided on the high-pressure spray unit (4) and are arranged circumferentially around the axis of the water collection box (1); A plurality of support seats (21) corresponding to the spray heads (41) are mounted on the fixed seat (2), and an embedding cavity (22) is provided on the support seat (21) for the mouth of a sample bottle to be inserted in an inverted manner. The spray head (41) is used to spray high-pressure water mist into the interior of the sample bottle in the embedding cavity (22); The flip unit (3) comprises a bracket (31), a first reduction motor (32) is mounted on the bracket (31), an output shaft of the first reduction motor (32) extends in a horizontal direction and is connected to a rotating seat (33), electric cylinders (34) are mounted on both upper and lower sides of the rotating seat (33), a piston rod of the electric cylinder (34) extends in a vertical direction and is connected to a mounting plate (35), a plurality of mounting seats (36) corresponding to the support seats (21) are arranged on the mounting plate (35), a clamping cavity (37) for inserting the bottom of a sample bottle is arranged on the mounting seat (36), and a friction force between the side of the clamping cavity (37) and the sample bottle is greater than the gravity of the sample bottle; The first reduction motor (32) can drive the rotating seat (33) to flip, 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) moves in and out of the embedding cavity (22); The bottom of the water collecting box (1) is connected to a drainage pipe (11), and an opening and closing valve (12) is installed on the drainage pipe (11); Both the water inlet pipe (44) and the high-pressure air pipe (46) are provided with a one-way valve (49).

2. The auxiliary device of a liquid chromatograph according to claim 1, characterized in that: The high-pressure spray unit (4) comprises a fixed disk (42) installed in the water collecting box (1); the interior of the fixed disk (42) is hollow and connected to all the spray heads (41); the interior of the fixed disk (42) is connected to a water inlet pipe (44) and a high-pressure air pipe (46) via 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); and the heating box (47) is connected to a high-pressure air pump (48).

3. The auxiliary device of a liquid chromatograph according to claim 2, characterized in that: The water inlet pipe (44) is provided with a liquid flow meter (441), and the high-pressure gas pipe (46) is provided with a gas flow meter (461); 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) are all coupled to the controller (6); When the liquid flow meter (441) detects that the liquid flow reaches a 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 turn off, 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 reaches a 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 turn off, the heating box (47) to turn off, and the gas flow meter (461) to return to zero.

4. The auxiliary device of a liquid chromatograph according to claim 3, characterized in that: The mounting seat (36) is connected to the mounting plate (35) so as to rotate around its axis, and a driving unit (5) for driving all the mounting seats (36) on the lower side of the rotating seat (33) to rotate is provided on the fixed plate (42); When the sample bottle is inserted into the embedding cavity (22), the spray head (41) will correspond to the eccentric position of the mouth of the sample bottle.

5. The auxiliary device of a liquid chromatograph according to claim 4, characterized in that: The driving unit (5) comprises a second reduction motor (51) mounted on the fixed plate (42); the output shaft of the second reduction motor (51) is coaxially arranged with the water collecting box (1) and is coaxially connected with 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, and a driving gear (54) is coaxially connected to the sleeve (53); a plurality of driven gears (55) are meshed with the driving gear (54); the driven gears (55) correspond one to one with the mounting seat (36) on the lower side of the rotating seat (33); and the corresponding driven gears (55) and the mounting seat (36) are coaxially connected; When the electric cylinder (34) pushes the mounting plate (35) to move so that the sample bottle in the mounting seat (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).

6. The auxiliary device of a liquid chromatograph according to claim 5, characterized in that: The first reduction motor (32), the electric cylinder (34) and the second reduction motor (51) are all coupled to a controller (6), and a start button is provided on the controller (6); When the start button is pressed, 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 sample bottle on the lower side of the rotating seat (33) is separated from the embedding cavity (22), and then controls the first reduction motor (32) to drive the rotating seat (33) to flip 180 degrees, and then controls the piston rod of the cylinder on the lower side of the rotating seat (33) to extend, so that the sample bottle on the lower side of the rotating seat (33) is embedded in the embedding cavity (22).

7. The auxiliary device of a liquid chromatograph according to claim 6, characterized in that: The fixed seat (2) is provided with a contact sensor (38) for turning and contacting the mounting plate (35) located at the lower side of the rotating seat (33), and the contact sensor (38) is coupled to the controller (6); When the sample bottle on the lower side of the rotating seat (33) is embedded in the embedding cavity (22), the mounting plate (35) on the lower side of the rotating seat (33) will abut against the contact sensor (38), and the contact sensor (38) will transmit a cleaning signal to the controller (6), and the controller (6) will control the second reduction motor (51), the water pump (45) and the high-pressure air pump (48) to start.

8. The auxiliary device of a liquid chromatograph according to claim 7, characterized in that: When the controller (6) receives the stop signal, the controller (6) controls the second reduction motor (51) to turn off.

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