CN214668814U - Sample input device for liquid chromatograph - Google Patents

Abstract

The utility model relates to a liquid chromatograph advances kind technical field, especially relates to a sample input device for liquid chromatograph, include operation panel device, safety cover device, get liquid device and tray device, the operation panel becomes smaller and more exquisite, effectively saves space, improves space utilization. The protection cover device can effectively prevent the sample from being polluted and lead to the sample to overturn because of the mistake touches, and this protection cover can effectively prevent that the sample liquid medicine from splashing out when the sample is rotated at a high speed, and this protection cover can also keep warm, is unlikely to the sample liquid medicine and cools down too fast. The needle tube of the liquid taking device is additionally provided with the liquid storage chamber, so that the liquid taking amount at one time can be effectively increased, and the repeated liquid taking operation can be effectively reduced. The tray device is connected with the driving device through a key slot, so that different tray devices can be replaced conveniently. The utility model has the advantages of simple structure effectively prevents that liquid from splashing, has reduced the probability that the mistake touched by a wide margin, can effectively prevent that the sample is contaminated.

Description

Sample input device for liquid chromatograph

Technical Field

The utility model relates to a liquid chromatograph advances kind technical field, especially relates to a sample input device for liquid chromatograph.

Background

Liquid chromatographs are also classified into liquid-liquid chromatography (LLC) and liquid-solid chromatography (LSC) according to whether the stationary phase is liquid or solid. The modern liquid chromatograph consists of a high-pressure infusion pump, a sample introduction system, a temperature control system, a chromatographic column, a detector, a signal recording system and the like. Compared with the classical liquid phase column chromatography device, the device has the characteristics of high efficiency, rapidness, sensitivity and the like. The system consists of a liquid storage device, a pump, a sample injector, a chromatographic column, a detector, a recorder and the like. The mobile phase in the liquid storage device is pumped into the system by a high pressure pump, the sample solution enters the mobile phase through the sample injector and is loaded into a chromatographic column (stationary phase) by the mobile phase, and because each component in the sample solution has different distribution coefficients in two phases, when the two phases move relatively, through the distribution process of repeated adsorption-desorption, each component generates a large difference in moving speed, is separated into single components and flows out of the column in sequence, when the sample passes through the detector, the concentration of the sample is converted into an electric signal and is transmitted to a recorder, and data is printed out in a map form by the high performance liquid chromatograph mainly comprising a sample injection system, a liquid infusion system, a separation system, a detection system and a data processing system. The sample injection system generally adopts a diaphragm injection sample injector or a high-pressure sample injection chamber to complete sample injection operation, and the sample injection amount is constant. The infusion system comprises a high-pressure pump, a mobile phase reservoir and a gradiometer. The general pressure of the high-pressure pump is l.47-4.4X 10Pa, the flow rate is adjustable and stable, when the high-pressure mobile phase passes through the chromatographic column, the diffusion effect of the sample in the column can be reduced, the moving speed of the sample in the column can be increased, and the high-pressure pump is favorable for improving the resolution, recovering the sample, maintaining the biological activity of the sample and the like. The mobile phase reservoir and gradiometer can make the mobile phase change with the properties of the stationary phase and the sample, including changing the polarity, ionic strength and pH value of the eluent, or changing to competitive inhibitor or denaturant, etc. This allows for efficient separation of species (even if only one group differs or is isomeric).

Then diversified injector has just appeared on the market, as chinese patent CN202021427716.7 discloses a high performance liquid chromatograph injector, including workstation, first telescopic link, second telescopic link, motor, servo motor, third telescopic link and two-way pump, the disc is installed on the top of workstation, first telescopic link output end fixedly connected with first mounting bracket, the output of second telescopic link is connected with the diaphragm, the perforation has been seted up to the right-hand member of diaphragm, the output of motor is connected with the lead screw, the internally mounted of workstation has servo motor, accept the top of board and install a kind bottle dish, the upper surface right-hand member of workstation has welded the third mounting bracket perpendicularly, the output of third telescopic link is connected with the syringe needle. This high performance liquid chromatograph injector reduces the frictional force that removes, when needing to remove the bottle that is equipped with appearance liquid directly over the conveyer pipe, utilizes the convenient stable clamp of splint to get the bottle that is equipped with appearance liquid, quick dismouting appearance bottle dish.

However, the above-mentioned patent is too complicated, and the tray of placing the sample does not have the safety cover in addition, very easily can arouse the mistake and bump and lead to the sample to pollute, can make the sample splash when the sample rotates, leads to polluting, and this patent still needs to snatch out the sample bottle, can snatch the unstability very probably, leads to the sample unrestrained, causes pollution and economic loss, gets liquid process too complicated, inefficiency.

There is therefore a need for a sample input device for a liquid chromatograph that can address the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is an object of the present invention to provide a sample input device for a liquid chromatograph, which increases a protective cover device, and can effectively avoid the entrance of contamination, and the splashing of the sample. And the sample bottle is not required to be lifted when the liquid is taken, and the liquid can be directly taken. The utility model has the advantages of simple structure effectively prevents that liquid from splashing, has reduced the probability that the mistake touched by a wide margin, can effectively prevent that the sample is contaminated.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the utility model provides a sample input device for liquid chromatograph, includes operation panel device, safety cover device, gets liquid device and tray device, the tray device sets up in operation panel device upper end, and the tray device is connected for rotating with the operation panel device, and the tray device lower extreme is equipped with drive arrangement, and drive arrangement is connected for the drive with the tray device, and drive arrangement is fixed connection with the operation panel device, and the safety cover device sets up in the tray device upper end, and the safety cover device is fixed connection with the operation panel device, gets the liquid device and sets up in getting liquid device one side, gets liquid device and operation panel device and is sliding connection.

Further, the operation panel device comprises a plate, a mounting hole A is formed in the upper end of the plate, a slide is arranged at one end of the plate and fixedly connected with the plate, a control console is arranged on one side of the slide and fixedly connected with the plate, a support column is arranged at the lower end of the plate and fixedly connected with the plate, a through hole is formed in the plate, and a mounting hole B is formed in the periphery of the through hole.

Further, the control console comprises an operation panel, the operation panel is fixedly connected with the board, a touch screen is arranged on the operation panel, the touch screen is fixedly connected with the operation panel, a button is arranged on one side of the touch screen, and the button is electrically connected with the operation panel.

Further, the protection cover device comprises a shell, a sampling port is arranged at the upper end of the shell, an electric hinge shaft is arranged on one side of the sampling port and is connected with the shell in a rotating mode, a movable plate is arranged on the electric hinge shaft and is fixedly connected with the electric hinge shaft, a supporting block is arranged on one side of the shell, a connecting plate A is arranged on two sides of the supporting block and is fixedly connected with the supporting block, a mounting hole C is formed in the connecting plate A, the connecting plate A is fixedly connected with the plate, an electric hinge shaft A is arranged in the middle of the supporting block and is rotatably connected with the supporting block, and the electric hinge shaft A is fixedly connected with the shell.

Further, it includes the L template to get liquid device, L template one end is equipped with motor A, the L template is connected for the drive with motor A, motor A lower extreme is equipped with the coaster, motor A is fixed connection with the coaster, coaster and slide are sliding connection, the L template other end is equipped with the cylinder, the cylinder tail end is fixed connection with the L template, the cylinder stretches out to serve and is equipped with the connecting block, connecting block and cylinder are fixed connection, be equipped with the needle tubing on the connecting block, the needle tubing is fixed connection with the connecting block, connecting block one side is equipped with locking screw, locking screw is threaded connection with the connecting block, the needle tubing top is equipped with the bidirectional pump, bidirectional pump is fixed connection with the needle tubing, be equipped with the stock solution room in the middle of the needle tubing, the stock solution room is fixed connection with the needle tubing, the needle tubing below is equipped with the syringe needle head, the needle tubing is fixed connection with the needle tubing.

Furthermore, drive arrangement includes motor B, is equipped with connecting plate B on the motor B, and connecting plate B and motor B are fixed connection, and connecting plate B and board are fixed connection, are equipped with mounting hole D motor shaft one end on the connecting plate B and are equipped with the key, and the key is fixed connection with the motor shaft.

Further, the tray device comprises a tray body, a sample bottle hole and a shaft hole are formed in the upper portion of the tray, a key groove is formed in the shaft hole, a supporting leg is arranged below the tray and is fixedly connected with the tray, a ball is arranged on the supporting leg, and the ball is connected with the supporting leg in a rotating mode.

Further, the model of the motor B is 60ZFMA1-0D20ABYK, the rated voltage is 220V, the rated power is 200W, and the rated rotating speed is 1000 RPM.

The utility model has the advantages that: the utility model provides a sample input device for liquid chromatograph, include operation panel device, safety cover device, get liquid device and tray device, the operation panel becomes smaller and more exquisite, effectively saves space, improves space utilization. The protection cover device can effectively prevent the sample from being polluted and lead to the sample to overturn because of the mistake touches, and this protection cover can effectively prevent that the sample liquid medicine from splashing out when the sample is rotated at a high speed, and this protection cover can also keep warm, is unlikely to the sample liquid medicine and cools down too fast. The needle tube of the liquid taking device is additionally provided with the liquid storage chamber, so that the liquid taking amount at one time can be effectively increased, and the repeated liquid taking operation can be effectively reduced. The tray device is connected with the driving device through a key slot, so that different tray devices can be replaced conveniently. The utility model has the advantages of simple structure effectively prevents that liquid from splashing, has reduced the probability that the mistake touched by a wide margin, can effectively prevent that the sample is contaminated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic expanded view of the three-dimensional structure of the present invention;

fig. 3 is a schematic rear view of the three-dimensional structure of the present invention;

FIG. 4 is a schematic structural view of the operation table device of the present invention;

FIG. 5 is a schematic structural view of the protective cover device of the present invention;

FIG. 6 is a schematic structural view of the liquid-extracting device of the present invention;

fig. 7 is a schematic structural view of the driving device of the present invention;

fig. 8 is a schematic bottom view of the tray device of the present invention;

fig. 9 is a schematic top view of the tray device of the present invention;

wherein: 1. an operation table device; 11. a plate; 12. a mounting hole A; 13. a through hole; 14. a slideway; 15. a console; 151. an operation panel; 152. a touch screen; 153. a button; 16. a pillar; 17. a mounting hole B; 2. a protective cover device; 21. a sampling port; 22. a housing; 23. a mounting hole C; 24. a support block; 25. a connecting plate A; 26. an electric hinge shaft A; 27. a movable plate; 28. an electric hinge shaft B; 3. a liquid taking device; 31. an L-shaped plate; 32. a cylinder; 33. a bi-directional pump; 34. a needle tube; 35. locking the screw; 36. connecting blocks; 37. a liquid storage chamber; 38. a needle head; 39. a motor A; 310. a pulley; 4. a drive device; 41. a key; 42. a motor shaft; 43. a motor B; 44. a mounting hole D; 45. a connecting plate B; 5. a tray device; 51. a tray; 52. a keyway; 53. a shaft hole; 54. a support leg; 55. a ball bearing; 56. and (4) sampling a bottle hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly specified or limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

FIG. 1 is a schematic view showing a three-dimensional structure of the present invention, FIG. 2 is a schematic view showing an expanded three-dimensional structure of the present invention, FIG. 3 is a schematic view showing a rear view showing a three-dimensional structure of the present invention, and a sample input device for a liquid chromatograph, such as those shown in FIGS. 1 to 3, a sample input device for a liquid chromatograph, comprising a console device 1, a protective cover device 2, a liquid taking device 3, and a tray device 5, wherein the tray device 5 is disposed at an upper end of the console device 1, the tray device 5 is rotatably connected to the console device 1, a driving device 4 is disposed at a lower end of the tray device 5, the driving device 4 is drivingly connected to the tray device 5, the driving device 4 is fixedly connected to the console device 1, the protective cover device 2 is disposed at an upper end of the tray device 5, the protective cover device 2 is fixedly connected to the console device 1, the liquid taking device 3 is disposed at one side of the liquid taking device 3, the liquid taking device 3 is connected with the operating platform device 1 in a sliding way. So set up, operation panel device 1 can play the effect that stabilizes the support, has guaranteed the stability of whole sample work, and safety cover device 2 can prevent effectively that personnel from missing and touching, carries out isolation protection to the appearance body. Get liquid device 3 and can accomplish the work of once drawing a large amount of appearance body reagents, reduce the number of times of repeated sampling, tray device 5 can effectively support appearance body bottle.

Example 2:

fig. 4 is the utility model discloses an operation panel device structure schematic diagram, a sample input device for liquid chromatograph as shown in fig. 4, operation panel device 1 includes board 11, and board 11 upper end is equipped with mounting hole A12, and board 11 one end is equipped with slide 14, and slide 14 is fixed connection with board 11, and slide 14 one side is equipped with control cabinet 15, and control cabinet 15 is fixed connection with board 11, and board 11 lower extreme is equipped with pillar 16, and pillar 16 passes through the mutual fixed connection of screw thread with board 11, is equipped with through-hole 13 on the board 11, is equipped with mounting hole B17 around the through-hole 13. The console 15 includes an operation panel 151, the operation panel 151 is fixedly connected to the board 11, a touch screen 152 is disposed on the operation panel 151, the touch screen 152 is fixedly connected to the operation panel 151, a button 153 is disposed on one side of the touch screen 152, and the button 153 is electrically connected to the operation panel 151. With such an arrangement, the slide way 14 can move the liquid taking device 2, so as to conveniently absorb the sample bodies of the outer ring and the inner ring of the tray device. The post 16 can be adjustable to ensure that the entire console device is level. The console 15 can control the operation of the whole device and display related information parameters on the touch screen.

Example 3:

Fig. 5 is the utility model discloses a protection cover device structure schematic diagram, a sample input device for liquid chromatograph as shown in fig. 5, protection cover device 2 includes casing 22, casing 22 upper end is equipped with sample connection 21, sample connection 21 one side is equipped with electronic hinge B28, electronic hinge B28 is connected for rotating with casing 22, be equipped with fly leaf 27 on the electronic hinge B28, fly leaf 27 is fixed connection with electronic hinge B28, casing 22 one side is equipped with supporting shoe 24, supporting shoe 24 both sides are equipped with connecting plate A25, connecting plate A25 is fixed connection with supporting shoe 24, be equipped with mounting hole C23 on the connecting plate A25, connecting plate A25 is fixed connection with board 11, be equipped with electronic hinge A26 in the middle of supporting shoe 24, electronic hinge A26 is connected for rotating with supporting shoe 24, electronic hinge A26 is fixed connection with casing 22. So set up, be equipped with the sample connection on the casing 22, just so can avoid lifting whole safety cover device 2 when getting liquid device 3 and getting liquid, raise the efficiency, also effectively avoid personnel's mistake to touch.

Example 4:

fig. 6 is a schematic structural view of a liquid extraction device of the present invention, such as the sample input device for a liquid chromatograph shown in fig. 6, the liquid extraction device 3 includes an L-shaped plate 31, a motor a39 is disposed at one end of the L-shaped plate 31, the L-shaped plate 31 is in driving connection with a motor a39, a pulley 310 is disposed at the lower end of the motor a39, the motor a39 is fixedly connected with the pulley 310, the pulley 310 is in sliding connection with the slide way 14, a cylinder 32 is disposed at the other end of the L-shaped plate 31, the tail end of the cylinder 32 is fixedly connected with the L-shaped plate 31, a connection block 36 is disposed at the extending end of the cylinder 32, the connection block 36 is fixedly connected with the cylinder 32, a needle tube 34 is disposed on the connection block 36, the needle tube 34 is fixedly connected with the connection block 36, a locking screw 35 is disposed on one side of the connection block 36, the locking screw 35 is in threaded connection with the connection block 36, a bidirectional pump 33 is disposed above the needle tube 34, the bidirectional pump 33 is fixedly connected with the needle tube 34, the middle of the needle tube 34 is provided with a liquid storage chamber 37, the liquid storage chamber 37 is fixedly connected with the needle tube 34, a needle head 38 is arranged below the needle tube 34, and the needle head 38 is fixedly connected with the needle tube 34. So set up, should get liquid device 3 bottom and be equipped with coaster 310, can slide in slide 14 on operation panel device 1, be favorable to getting the liquid operation, motor A39 can make L template 31 rotate, and the liquid that will draw is sent to in subsequent instrument, and pivoted angle can be adjusted, has increased the utilization ratio in space. The liquid storage chamber 37 on the needle tube 34 can ensure that a sufficient amount of liquid can be taken by one time without repeatedly taking the same sample body for many times, thereby improving the efficiency.

Example 5:

fig. 7 is the utility model discloses a drive arrangement structure sketch map, a sample input device for liquid chromatograph as shown in fig. 7, drive arrangement 4 includes motor B43, motor B43's model is 60ZFMA1-0D20ABYK, rated voltage 220V, rated power 200W, rated revolution 1000RPM, be equipped with connecting plate B45 on the motor B43, connecting plate B45 is fixed connection with motor B43, connecting plate B45 is fixed connection with board 11, it is equipped with mounting hole D44 motor shaft 42 one end on the connecting plate B45 and is equipped with key 41, key 41 is fixed connection with motor shaft 42. So set up, in the key 41 that sets up at motor shaft 42 top can insert tray device 5 to drive tray device 5 rotates, adopts the key can effectively improve the cooperation precision, avoids the appearance of virtual position.

Example 6:

fig. 8 is the utility model discloses a tray device looks up the structure schematic diagram, and fig. 9 is the utility model discloses a tray device looks down the structure schematic diagram, like the sample input device for liquid chromatograph that fig. 8 and fig. 9 are shown, tray device 5 includes tray 51 body, and tray 51 top is equipped with appearance bottle hole 56 and shaft hole 53, is equipped with keyway 52 on the shaft hole 53, and tray 51 below is equipped with landing leg 54, and landing leg 54 is fixed connection with tray 51, is equipped with ball 55 on the landing leg 54, and ball 55 is connected for rotating with landing leg 54. So set up, be equipped with the appearance bottle hole 56 of equidimension not on this tray device 5, the ball 55 that the tray 51 bottom set up can make the rotation more be smooth, and keyway 52 and key 41 perfect adaptation can realize just can accomplishing the drive without locking, also be convenient for carry out the change of tray simultaneously.

The working mode is as follows: the utility model provides a sample input device for liquid chromatograph, the utility model discloses when using, lift up safety cover device 2 through electronic hinge A26 earlier, then insert motor shaft 42 with suitable tray 51 make key 41 laminate with keyway 52 completely, then put into the appearance bottle in appearance vase hole 56, then make the safety cover device close through touch screen 152, thereby make motor B43 circular telegram drive tray 51, rotate, this motor can carry out high-speed rotation, also can jog. After the rotation is finished, when the liquid taking device 3 needs to take liquid, the liquid taking device slides on the slide way 14 through the pulley 310 to be close to the tray device 5, then the movable plate 27 on the protective cover device 2 is opened, the needle tube moves to the position right above the sample bottle, the needle head is inserted into the sample bottle, liquid absorption is carried out through the bidirectional pump 33, the needle tube is lifted up through the air cylinder 32 after the liquid taking is finished, then the pulley 310 retreats, and then the motor A39 rotates to a subsequent device for receiving liquid, and liquid discharging is carried out through the bidirectional pump 33. The utility model has the advantages of simple structure effectively prevents that liquid from splashing, has reduced the probability that the mistake touched by a wide margin, can prevent effectively that the sample from being polluted, improves and gets liquid efficiency, reduces area.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (8)

1. A sample input device for a liquid chromatograph, includes operation panel device (1), safety cover device (2), gets liquid device (3) and tray device (5), its characterized in that: tray device (5) set up in operation panel device (1) upper end, tray device (5) are connected for rotating with operation panel device (1), tray device (5) lower extreme is equipped with drive arrangement (4), drive arrangement (4) are connected for the drive with tray device (5), drive arrangement (4) are fixed connection with operation panel device (1), safety cover device (2) set up in tray device (5) upper end, safety cover device (2) are fixed connection with operation panel device (1), get liquid device (3) and set up in getting liquid device (3) one side, it is sliding connection to get liquid device (3) and operation panel device (1).

2. A sample input device for a liquid chromatograph according to claim 1, wherein: operation panel device (1) includes board (11), and board (11) upper end is equipped with mounting hole A (12), and board (11) one end is equipped with slide (14), and slide (14) are fixed connection with board (11), and slide (14) one side is equipped with control cabinet (15), and control cabinet (15) are fixed connection with board (11), and board (11) lower extreme is equipped with pillar (16), and pillar (16) are fixed connection with board (11), are equipped with through-hole (13) on board (11), are equipped with mounting hole B (17) around through-hole (13).

3. A sample input device for a liquid chromatograph according to claim 2, wherein: the control console (15) comprises an operation panel (151), the operation panel (151) is fixedly connected with the board (11), a touch screen (152) is arranged on the operation panel (151), the touch screen (152) is fixedly connected with the operation panel (151), a button (153) is arranged on one side of the touch screen (152), and the button (153) is electrically connected with the operation panel (151).

4. A sample input device for a liquid chromatograph according to claim 1, wherein: the protective cover device (2) comprises a shell (22), a sampling opening (21) is formed in the upper end of the shell (22), an electric hinge shaft B (28) is arranged on one side of the sampling opening (21), the electric hinge shaft B (28) is rotatably connected with the shell (22), a movable plate (27) is arranged on the electric hinge shaft B (28), the movable plate (27) is fixedly connected with the electric hinge shaft B (28), a supporting block (24) is arranged on one side of the shell (22), connecting plates A (25) are arranged on two sides of the supporting block (24), the connecting plates A (25) are fixedly connected with the supporting block (24), a mounting hole C (23) is formed in the connecting plates A (25), the connecting plates A (25) are fixedly connected with a plate (11), an electric hinge shaft A (26) is arranged in the middle of the supporting block (24), the electric hinge shaft A (26) is rotatably connected with the supporting block (24), and the electric hinge shaft A (26) is fixedly connected with the shell (22).

5. A sample input device for a liquid chromatograph according to claim 1, wherein: the liquid taking device (3) comprises an L-shaped plate (31), one end of the L-shaped plate (31) is provided with a motor A (39), the L-shaped plate (31) is in driving connection with the motor A (39), the lower end of the motor A (39) is provided with a pulley (310), the motor A (39) is fixedly connected with the pulley (310), the pulley (310) is in sliding connection with a slide way (14), the other end of the L-shaped plate (31) is provided with a cylinder (32), the tail end of the cylinder (32) is fixedly connected with the L-shaped plate (31), the extending end of the cylinder (32) is provided with a connecting block (36), the connecting block (36) is fixedly connected with the cylinder (32), the connecting block (36) is provided with a needle tube (34), the needle tube (34) is fixedly connected with the connecting block (36), one side of the connecting block (36) is provided with a locking screw (35), the locking screw (35) is in threaded connection with the connecting block (36), a two-way pump (33) is arranged above the needle tube (34), the bidirectional pump (33) is fixedly connected with the needle tube (34), the liquid storage chamber (37) is arranged in the middle of the needle tube (34), the liquid storage chamber (37) is fixedly connected with the needle tube (34), the needle head (38) is arranged below the needle tube (34), and the needle head (38) is fixedly connected with the needle tube (34).

6. A sample input device for a liquid chromatograph according to claim 1, wherein: drive arrangement (4) are equipped with connecting plate B (45) including motor B (43) on motor B (43), and connecting plate B (45) are fixed connection with board (11), are equipped with mounting hole D (44) on connecting plate B (45) motor shaft (42) one end and are equipped with key (41), and key (41) are fixed connection with motor shaft (42).

7. A sample input device for a liquid chromatograph according to claim 1, wherein: tray device (5) are equipped with appearance bottle hole (56) and shaft hole (53) including tray (51) body, tray (51) top, are equipped with keyway (52) on shaft hole (53), and tray (51) below is equipped with landing leg (54), and landing leg (54) are fixed connection with tray (51), are equipped with ball (55) on landing leg (54), and ball (55) are connected for rotating with landing leg (54).

8. A sample input device for a liquid chromatograph according to claim 6, wherein: the model of the motor B (43) is 60ZFMA1-0D20ABYK, the rated voltage is 220V, the rated power is 200W, and the rated rotating speed is 1000 RPM.

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