CN217484271U - High-efficiency detection liquid chromatograph - Google Patents

Abstract

The utility model relates to a high efficiency detection liquid chromatograph belongs to liquid chromatograph's technical field, and it includes liquid chromatograph body and sample cabinet, is equipped with in the sample cabinet and places the dish and be used for the splendid attire to detect the sample jar of sample, places the upper surface of dish and sets up a plurality of standing grooves that supply the sample jar to place, the bottom of standing groove is slided and is provided with and places the board, and the upper surface of placing the dish slides and is provided with multiunit centre gripping arm, and two centre gripping arms of every group are located the both sides of standing groove respectively and set up relatively, every centre gripping arm of group and every standing groove one-to-one, all are equipped with the pushing mechanism who is used for driving two centre gripping arms of every group and are close to each other between every centre gripping arm of group, are equipped with between every centre gripping arm of group to be used for connecting the two or the coupling mechanism who breaks off. This application has the connection stability who improves the sample jar and place between the dish to improve the detection efficiency's of liquid chromatograph body effect.

Description

High-efficiency detection liquid chromatograph

Technical Field

The application relates to the technical field of liquid chromatographs, in particular to a high-efficiency detection liquid chromatograph.

Background

At present, a liquid chromatograph is an instrument which firstly separates a mixture and then analyzes and identifies the mixture by utilizing the difference of the distribution ratio of the mixture between two liquids which are liquid-solid or immiscible. The high-efficiency detection liquid chromatograph is composed of a liquid storage device, a pump, a sample injector, a chromatographic column, a detector, a recorder and the like, wherein a mobile phase in the liquid storage device is pumped into a system by a high-pressure pump, a sample solution enters the mobile phase through the sample injector and is loaded into the 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 repeated adsorption-desorption distribution processes, each component generates large difference in moving speed and is separated into single components to flow out of the column in sequence, when the components pass through the detector, the concentration of the sample is converted into an electric signal to be transmitted to the recorder, and data is printed out in a graph form.

The existing high-efficiency detection liquid chromatograph comprises a liquid chromatograph body and a sample cabinet, wherein a placing disc and a sample tank for containing a sample to be detected are arranged in the sample cabinet, and a plurality of placing grooves for placing the sample tank are formed in the placing disc; the sample to be detected is placed in the sample tank, and the sample tank is inserted and is established in the standing groove, and the placing disc is placed in the sample cabinet, closes the sample cabinet, and the liquid chromatograph body is with sample suction and analysis in by the sample tank.

In view of the above-mentioned related technologies, the inventor believes that there is a defect that when the liquid chromatograph body extracts a sample in the sample tank, the sample tank may be separated from the placing groove to cause the sample to be scattered, and the like, and the operation of the liquid chromatograph body needs to be stopped and the placing tray needs to be cleaned, which results in low detection efficiency of the liquid chromatograph.

SUMMERY OF THE UTILITY MODEL

In order to improve the sample tank and place the connection stability between the dish to improve the detection efficiency of liquid chromatograph body, this application provides a high efficiency detection liquid chromatograph.

The application provides a high efficiency detection liquid chromatograph adopts following technical scheme:

the utility model provides a high efficiency detection liquid chromatograph, includes liquid chromatograph body and sample cabinet, is equipped with in the sample cabinet and places the dish and be used for the splendid attire to detect the sample jar of sample, places the upper surface of dish and sets up a plurality of standing grooves that supply the sample jar to place, the bottom of standing groove is slided and is provided with and places the board, and the upper surface of placing the dish slides and is provided with multiunit centre gripping arm, and two centre gripping arms of every group are located the both sides of standing groove respectively and set up relatively, every centre gripping arm of group and every standing groove one-to-one, and every is placed and all is equipped with the pushing mechanism that is used for driving two centre gripping arms of every group and is close to each other between board and every centre gripping arm of group, is equipped with the coupling mechanism who is used for connecting the two or break off between every centre gripping arm of group.

Through adopting the above technical scheme, the staff places the sample tank in the standing groove in proper order, press the sample tank, place the board downstream, pushing mechanism drives two centre gripping arms relative motion that every standing groove corresponds, when two centre gripping arms carry out the centre gripping to the sample tank, coupling mechanism drives the rigidity of every group centre gripping arm, realized the sample tank with place the rigidity between the dish, improved the sample tank and placed the connection stability between the dish, and then improved the detection efficiency of liquid chromatograph body.

Optionally, a sliding groove is formed in the placing plate, a pushing hole is formed in the bottom end of the placing groove and is communicated with the sliding groove, connecting holes are formed in two ends of the sliding groove, one end of each connecting hole is formed in the upper surface of the placing plate, the two connecting holes are symmetrically formed in two sides of the placing groove, the pushing mechanism comprises multiple sets of moving assemblies which are arranged in the sliding groove and the connecting holes and used for driving the two clamping arms to move relatively, multiple sets of reset assemblies which are used for driving the moving assemblies to reset, and the moving assemblies and the placing groove are in one-to-one correspondence.

Through adopting above-mentioned technical scheme, when the sample jar was placed in the standing groove and was driven and place the board downstream, the removal subassembly passed through spout and connecting hole and drove two centre gripping arm motions, when two centre gripping arms carry out the centre gripping to the sample jar, coupling mechanism is with the rigidity of two centre gripping arms, when coupling mechanism removes the connection between two centre gripping arms, the subassembly that resets drives two centre gripping arms and resets, place the board and reset, place the dish and remove the fixed effect to the sample jar, the repeated centre gripping efficiency of placing the dish to the sample jar has been improved.

Optionally, the removal subassembly includes fixed block, slide bar and connecting rod, the fixed block sets firmly in the bottom of placing the board, and the fixed block slides and sets up in pushing away the hole, the slide bar is equipped with two, and two slide bars use the axis of standing groove to set up and mutual butt as central symmetry, and the one end of the mutual butt of two slide bars all sets up towards the fixed block, and the connecting rod slides and sets up in the connecting hole, the bottom and the slide bar looks butt of connecting rod, centre gripping arm and connecting rod looks butt, two centre gripping arms respectively with two connecting rod looks butt, the both ends of connecting rod all set up to semi-cylindrical, and the one end that the slide bar is close to the connecting rod sets up to semi-cylindrical, and the one end that the centre gripping arm is close to the connecting rod sets up to semi-cylindrical.

Through adopting above-mentioned technical scheme, when driving sample tank and promoting to place the board, place the board and drive the fixed block and extrude two slide bars, two slide bars are towards opposite direction motion, and two slide bars all promote the direction motion of connecting rod towards the centre gripping arm, and the one end that the slide bar was kept away from to the connecting rod promotes the direction motion of centre gripping arm towards sample tank, and the removal subassembly has realized being close to each other of two centre gripping arms, has improved the centre gripping efficiency of centre gripping arm.

Optionally, two reset grooves are formed in each sliding groove, the reset grooves are also formed in the connecting holes and on the upper surface of the placing plate, the reset grooves are respectively in one-to-one correspondence with the sliding rods, the connecting rods and the clamping arms, the reset assemblies are in one-to-one correspondence with the reset grooves, each reset assembly comprises a reset plate and a reset spring, the reset plates are slidably arranged in the reset grooves, one ends of the reset springs are fixedly arranged in the reset grooves, the other ends of the reset springs are fixedly connected with the reset plates, and the reset plates are fixedly arranged on the moving assemblies close to the reset grooves where the reset plates are located; when the reset spring is in a natural state, every two slide bars are abutted, and the connecting rod is completely positioned in the connecting hole.

Through adopting above-mentioned technical scheme, when the fixed block promoted two slide bars and is the back-to-back motion, the connecting rod moved towards the centre gripping arm, and the removal subassembly drives the board motion that resets, and reset spring compresses, and reset spring drives and applys the effort that makes the removal subassembly reset to the board that resets, and when centre gripping arm unblock, the subassembly that resets drives the removal subassembly and resets, places the board and resets, has improved the unblock convenience of centre gripping arm.

Optionally, a buffer spring is fixedly arranged in the chute, and one end of the buffer spring is fixedly connected with the bottom end of the fixed block; when buffer spring is in the natural state, the fixed block is located between two slide bars and two centre gripping arms all centre gripping are on the sample jar.

Through adopting above-mentioned technical scheme, when two slide bar relative motion, the fixed block gets into the standing groove, and buffer spring is tensile, and buffer spring has reduced the speed when placing the board and reseing, and then has improved the stability of sliding of placing the board.

Optionally, coupling mechanism includes the dead lever, is used for the coupling assembling with the position fixing of dead lever to and be used for the unlocking piece with the stationary state cancellation of dead lever, the dead lever sets up between the centre gripping arm of two relative settings, the dead lever links firmly with one of them centre gripping arm, is provided with on another centre gripping arm to supply the dead lever to insert the slot of establishing, coupling assembling sets up in the centre gripping arm that is equipped with the joint groove.

Through adopting above-mentioned technical scheme, when two centre gripping arms were close to each other, the dead lever was inserted and is established to the slot in, coupling assembling fixes the dead lever on the centre gripping arm, and the rigidity of two centre gripping arms is fixed, and when needs were relieved the connected state of two centre gripping arms, the unlocking piece was relieved the fixed state of dead lever, has improved being connected between dead lever and the centre gripping arm and has demolishd the convenience, and then has improved the fixed efficiency of sample jar.

Optionally, the connecting assembly includes an insertion block and a clamping spring, a sliding groove for the insertion block to slide is formed in the clamping arm, a clamping groove for the insertion block to insert is formed in the fixing rod, the sliding groove and the clamping groove are arranged oppositely, the clamping spring is fixedly arranged in the sliding groove, one end of the clamping spring is fixedly connected with the insertion block, one end of the insertion block, which is far away from the clamping spring, is inclined towards the other clamping arm, the unlocking piece is an unlocking rope, one end of the unlocking piece is fixedly arranged on the insertion block, and the other end of the unlocking piece is located outside the clamping arm; when the clamping spring is in a natural state, the inserting block is simultaneously positioned in the clamping groove and the sliding groove.

Through adopting above-mentioned technical scheme, when the dead lever is inserted and is established to the slot in, dead lever and inserted block looks butt, the dead lever will be inserted the piece and pushed into the inslot that slides, the compression of joint spring, when the joint groove with slide the groove relative time, the inserted block gets into the joint inslot, the joint spring resumes natural state, the inserted block gets into the joint inslot, the rigidity of dead lever has realized the convenient connection between dead lever and the centre gripping arm, has improved the connection stability between dead lever and the centre gripping arm.

Optionally, each row of a plurality of standing grooves formed in the placing plate is uniformly distributed, a plurality of groups of stabilizer bars are arranged on the upper surface of the placing plate in a sliding mode, the same row of clamping arms moving towards the same direction are fixedly connected to one stabilizer bar, and the plurality of groups of stabilizer bars are uniformly distributed.

Through adopting above-mentioned technical scheme, the stabilizer bar is connected a plurality of centre gripping arms jointly, has improved the mobility stability of centre gripping arm, has further improved the centre gripping stability of centre gripping arm to the sample tank.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sample tank is placed in the placing grooves, the sample tank is pressed, the placing plate moves downwards, the pushing mechanism drives the two clamping arms corresponding to each placing groove to move relatively, when the clamping arms clamp the sample tank, the connecting mechanism drives the position of each group of clamping arms to be fixed, the connection stability between the sample tank and the placing disc is improved, and the detection efficiency of the liquid chromatograph body is further improved;

2. when a sample tank is placed in the placing groove and drives the placing plate to move downwards, the moving assembly drives the two clamping arms to move through the sliding groove and the connecting hole, when the two clamping arms clamp the sample tank, the connecting mechanism fixes the positions of the two clamping arms, when the connecting mechanism releases the connection between the two clamping arms, the reset assembly drives the two clamping arms to reset, the placing plate resets, the placing plate releases the fixing effect on the sample tank, and the repeated clamping efficiency of the placing plate on the sample tank is improved;

3. when two centre gripping arms were close to each other, the dead lever was inserted and is established to the slot in, and coupling assembling fixes the dead lever on the centre gripping arm, and the rigidity of two centre gripping arms, when the connected state of needs two centre gripping arms was relieved, the fixed state of deblocking with the dead lever was relieved, had improved being connected between dead lever and the centre gripping arm and had demolishd the convenience, and then had improved the fixed efficiency of sample tank.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a schematic view of a structure of a placing tray;

FIG. 3 is a cross-sectional view of the tray;

FIG. 4 is a cross-sectional view of the placement tray showing the fixation rod;

fig. 5 is a partially enlarged schematic view of a portion a in fig. 4 showing the connecting mechanism.

In the figure, 1, a liquid chromatograph body; 2. a sample cabinet; 21. placing a tray; 211. a placement groove; 212. placing the plate; 213. a chute; 214. pushing the hole; 215. connecting holes; 216. a reset groove; 217. a buffer spring; 218. a stabilizer bar; 22. a sample tank; 23. a clamp arm; 231. a slot; 232. a sliding groove; 3. a pushing mechanism; 31. a moving assembly; 311. a fixed block; 312. a slide bar; 313. a connecting rod; 32. resetting the assembly; 321. a reset plate; 322. a return spring; 4. a connecting mechanism; 41. a fixing rod; 411. a clamping groove; 42. a connection assembly; 421. inserting a block; 422. clamping a spring; 43. unlocking the lock.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a high-efficiency detection liquid chromatograph.

Referring to fig. 1 and 2, a high performance liquid chromatograph includes a liquid chromatograph body 1 and a sample cabinet 2, and a placing tray 21 and a sample tank 22 are arranged in the sample cabinet 2, and a plurality of placing grooves 211 have evenly been seted up to the upper surface of sample tray, and a plurality of placing grooves 211 are with column unit evenly distributed, and placing groove 211 supplies sample tank 22 to insert and establishes.

Referring to fig. 2 and 3, a placing plate 212 is arranged in the placing groove 211, the placing plate 212 is slidably arranged at the bottom end of the placing groove 211, a plurality of sets of oppositely arranged clamping arms 23 are slidably arranged on the upper surface of the placing groove 211, each set of clamping arms 23 corresponds to each placing groove 211 one by one, two clamping arms 23 of each set are symmetrically arranged along the axis of the placing groove 211, a pushing mechanism 3 for driving the two clamping arms 23 of each set to approach each other is arranged between each placing plate 212 and each set of clamping arms 23, and the pushing mechanism 3 improves the clamping efficiency of the clamping arms 23; the upper surface of placing the dish 21 slides and is provided with multiunit stabilizer bar 218, and the same row of centre gripping arm 23 towards same direction motion links firmly on a stabilizer bar 218 jointly, and multiunit stabilizer bar 218 evenly distributed is equipped with the coupling mechanism 4 that is used for connecting the two or breaks off between every group stabilizer bar 218, and coupling mechanism 4 has improved the centre gripping stability between the centre gripping arm 23.

When the staff placed sample jar 22 in the standing groove 211 in proper order, press sample jar 22, place board 212 downstream, pushing mechanism 3 drives two centre gripping arms 23 that standing groove 211 corresponds and is relative motion, multiunit centre gripping arm 23 drives two stabilizer bar 218 motions simultaneously, when two centre gripping arms 23 carry out the centre gripping to sample jar 22, coupling mechanism 4 is with the rigidity of every stabilizer bar 218 of group, realized sample jar 22 and placed the rigidity between the dish 21, sample jar 22 and the connection stability of placing between the dish 21 have been improved, and then the detection efficiency of liquid chromatograph body 1 has been improved.

Referring to fig. 3, the pushing mechanism 3 includes a plurality of sets of moving assemblies 31 disposed in the sliding groove 213 and the connecting hole 215 and configured to drive the two clamping arms 23 to move relatively, and a plurality of sets of reset assemblies 32 configured to drive the moving assemblies 31 to reset, where the moving assemblies 31 and the placing grooves 211 are in one-to-one correspondence, the moving assemblies 31 improve the clamping efficiency of the clamping arms 23 on the sample tank 22, and the reset assemblies 32 improve the resetting stability of the clamping arms 23.

When the sample tank 22 is placed in the placing groove 211 and the placing plate 212 is driven to move downwards, the moving assembly 31 drives the two clamping arms 23 to move through the sliding grooves 213 and the connecting holes 215, when the two clamping arms 23 clamp the sample tank 22, the connecting mechanism 4 fixes the positions of the two clamping arms 23, when the connecting mechanism 4 releases the connection between the two clamping arms 23, the resetting assembly 32 drives the two clamping arms 23 to reset, the placing plate 212 resets, the placing plate 21 releases the fixing effect on the sample tank 22, and the repeated clamping efficiency of the placing plate 21 on the sample tank 22 is improved.

Referring to fig. 3, the moving assembly 31 includes a fixing block 311, a sliding rod 312 and a connecting rod 313, a pushing hole 214 for the fixing block 311 to slide is formed at the bottom end of the placing groove 211, a sliding slot 213 for the sliding rod 312 to slide is formed in the placing tray 21, the pushing hole 214 is communicated with the sliding slot 213, connecting holes 215 for the connecting rod 313 to slide are formed at both ends of the sliding slot 213, one end of each connecting hole 215 is formed on the upper surface of the placing tray 21, and the two connecting holes 215 are symmetrically formed at both sides of the placing groove 211.

Referring to fig. 3, the fixing block 311 is fixedly disposed on the lower surface of the placement plate 212, two sliding rods 312 are disposed, the two sliding rods 312 are symmetrically disposed around the axis of the placement slot 211 and abut against each other, one ends of the two sliding rods 312 close to each other are disposed in a semi-cylindrical shape, the bottom ends of the connecting rods 313 abut against the sliding rods 312, the clamping arms 23 abut against the connecting rods 313, the two clamping arms 23 abut against the two connecting rods 313, the two ends of the connecting rods 313 are disposed in a semi-cylindrical shape, one ends of the sliding rods 312 close to the connecting rods 313 are disposed in a semi-cylindrical shape, and one ends of the clamping arms 23 close to the connecting rods 313 are disposed in a semi-cylindrical shape.

Referring to fig. 3, a buffer spring 217 is fixedly disposed in the sliding groove 213, and one end of the buffer spring 217 is fixedly connected to the bottom end of the fixed block 311; when the buffer spring 217 is in a natural state, the fixing block 311 is located between the two sliding rods 312, the two clamping arms 23 are clamped on the circumferential outer wall of the sample tank 22, the buffer spring 217 buffers the placing plate 212, and the stability of the sample tank 22 when the fixing block 311 is reset is improved.

When the sample tank 22 is driven to push the placing plate 212, the placing plate 212 drives the fixing block 311 to extrude the two sliding rods 312, the two sliding rods 312 move in opposite directions, the two sliding rods 312 both push the connecting rod 313 to move in a direction towards the clamping arm 23, one end of the connecting rod 313 far away from the sliding rod 312 pushes the clamping arm 23 to move in a direction towards the sample tank 22, the moving assembly 31 achieves mutual approaching of the two clamping arms 23, and clamping efficiency of the clamping arm 23 is improved.

Referring to fig. 3, the reset assembly 32 includes a reset plate 321 and a reset spring 322, each sliding slot 213 is provided with a reset slot 216 for the reset plate 321 to slide, the reset slot 216 is also provided in the connecting hole 215 and the upper surface of the placing tray 21, the reset slots 216 are respectively corresponding to the sliding rods 312, the connecting rods 313 and the clamping arms 23 one by one, the reset assembly 32 is corresponding to the reset slots 216 one by one, one end of the reset spring 322 is fixedly arranged on the sidewall of the reset slot 216, the other end of the reset spring 322 is fixedly connected to the reset plate 321, and the reset plate 321 is fixedly arranged on the sliding rods 312, the connecting rods 313 and the clamping arms 23 close to the reset slot 216 where the reset plate is located; when the return spring 322 is in a natural state, every two sliding rods 312 are abutted, and the connecting rod 313 is completely positioned in the connecting hole 215.

When the fixing block 311 pushes the two sliding rods 312 to move back to back, the connecting rod 313 moves towards the clamping arm 23, the moving component 31 drives the reset plate 321 to move, the reset spring 322 is compressed, the reset spring 322 drives the reset plate 321 to apply acting force for resetting the moving component 31, when the clamping arm 23 is unlocked, the reset component 32 drives the moving component 31 to reset, the placing plate 212 resets, and the unlocking convenience of the clamping arm 23 is improved.

Referring to fig. 4 and 5, the connection mechanism 4 includes a fixing lever 41, a connection assembly 42 for fixing a position of the fixing lever 41, and an unlocking member 43 for canceling a fixed state of the fixing lever 41, the fixing lever 41 is located between two stabilizer bars 218, the fixing lever 41 is fixed to one of the stabilizer bars 218 and disposed toward the other stabilizer bar 218, the other stabilizer bar 218 is provided with a slot 231 into which the fixing lever 41 is inserted, and the connection assembly 42 is disposed in the clamp arm 23 provided with a clamping slot 411.

Referring to fig. 4 and 5, the connection assembly 42 includes an insertion block 421 and a clamping spring 422, a sliding groove 232 for the insertion block 421 to slide is formed on the stabilizer bar 218, a clamping groove 411 for the insertion block 421 to insert is formed on the fixing rod 41, the sliding groove 232 and the clamping groove 411 are oppositely disposed, one end of the clamping spring 422 is fixedly disposed on the insertion block 421, the other end of the clamping spring 422 is fixedly disposed on a side wall of the sliding groove 232 away from the clamping groove 411, one end of the insertion block 421 away from the clamping spring 422 is inclined toward another stabilizer bar 218, the unlocking member 43 is an unlocking rope, one end of the unlocking member 43 is fixedly disposed on the insertion block 421, and the other end of the unlocking member 43 is located outside the stabilizer bar 218; when the clamping spring 422 is in a natural state, the insert block 421 is located in the clamping slot 411 and the sliding slot 232 at the same time.

When the two clamping arms 23 approach each other, the fixing rod 41 is inserted into the slot 231, the connecting assembly 42 fixes the fixing rod 41 on the clamping arms 23, the positions of the two clamping arms 23 are fixed, and when the connection state of the two clamping arms 23 needs to be released, the unlocking piece 43 releases the fixing state of the fixing rod 41, so that the convenience of connection and detachment between the fixing rod 41 and the clamping arms 23 is improved, and the fixing efficiency of the sample tank 22 is further improved; when the dead lever 41 is inserted and established to the slot 231 in, dead lever 41 and inserted block 421 looks butt, dead lever 41 will insert the block 421 and push the groove 232 that slides in, joint spring 422 compresses, when joint groove 411 is relative with the groove 232 that slides, inserted block 421 get into in the joint groove 411, joint spring 422 resumes natural state, inserted block 421 get into in the joint groove 411, the rigidity of dead lever 41, the convenient connection between dead lever 41 and the centre gripping arm 23 has been realized, the connection stability between dead lever 41 and the centre gripping arm 23 has been improved.

The implementation principle of the high-efficiency detection liquid chromatograph in the embodiment of the application is as follows: when a worker sequentially places the sample tanks 22 in the placing groove 211, the sample tank 22 is pressed, the placing plate 212 moves downward, the fixing block 311 extrudes the two sliding rods 312, the two sliding rods 312 move in opposite directions, the two sliding rods 312 both push the connecting rod 313 to move in a direction of the clamping arm 23, one end of the connecting rod 313, which is far away from the sliding rods 312, pushes the clamping arm 23 to move in a direction of the sample tank 22, the multiple groups of clamping arms 23 simultaneously drive the two stabilizing rods 218 to move, when the two clamping arms 23 clamp the sample tanks 22, the fixing rod 41 is inserted into the slot 231, the connecting assembly 42 fixes the fixing rod 41 on the clamping arm 23, the positions of the two clamping arms 23 are fixed, the placing stability of the sample tanks 22 is realized, the liquid chromatograph body 1 detects samples in the sample tanks 22, and the detection efficiency of the liquid chromatograph body 1 is improved; when the connection state of the two clamping arms 23 needs to be released, the unlocking piece 43 releases the fixing state of the fixing rod 41, the reset assembly 32 drives the two clamping arms 23 to reset, the placing plate 212 resets, the buffer spring 217 buffers the placing plate 212, the placing plate 21 releases the fixing effect on the sample tank 22, and the unlocking convenience of the placing plate 21 on the sample tank 22 is improved.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a high performance liquid chromatograph, includes liquid chromatograph body (1) and sample cabinet (2), is equipped with in sample cabinet (2) and places dish (21) and be used for the splendid attire to detect sample's sample jar (22), places the upper surface of dish (21) and sets up standing groove (211) that a plurality of confession sample jar (22) were placed, its characterized in that: the bottom of standing groove (211) slides and is provided with places board (212), the upper surface of placing dish (21) slides and is provided with multiunit centre gripping arm (23), two centre gripping arms (23) of every group are located the both sides of standing groove (211) respectively and set up relatively, every centre gripping arm (23) of group and every standing groove (211) one-to-one, every is placed board (212) and all is equipped with between every centre gripping arm (23) of group and is used for driving pushing mechanism (3) that two centre gripping arms (23) of every group are close to each other, be equipped with between every centre gripping arm (23) of group and be used for connecting the two or coupling mechanism (4) of disconnection.

2. The high performance detection liquid chromatograph of claim 1, wherein: placing plate (21) and having seted up spout (213), push away hole (214) have been seted up to the bottom of standing groove (211), push away hole (214) and be linked together with spout (213), connecting hole (215) have all been seted up at the both ends of spout (213), and the upper surface of placing plate (21) is seted up to the one end of connecting hole (215), and the both sides in standing groove (211) are seted up to two connecting hole (215) symmetry, pushing mechanism (3) set up including the multiunit in spout (213) and connecting hole (215) and are used for driving two centre gripping arm (23) relative motion's removal subassembly (31) to and the multiunit is used for driving the subassembly (32) that resets that remove subassembly (31), remove subassembly (31) and standing groove (211) one-to-one.

3. The high performance detection liquid chromatograph of claim 2, wherein: the moving assembly (31) comprises fixed blocks (311), sliding rods (312) and connecting rods (313), the fixed blocks (311) are fixedly arranged at the bottom end of the placing plate (212), the fixed blocks (311) are arranged in the pushing holes (214) in a sliding mode, the two sliding rods (312) are arranged symmetrically by taking the axis of the placing groove (211) as the center and are abutted against each other, one ends of the two sliding rods (312) which are abutted against each other are arranged towards the fixed blocks (311), the connecting rods (313) are arranged in the connecting holes (215) in a sliding mode, the bottom ends of the connecting rods (313) are abutted against the sliding rods (312), the clamping arms (23) are abutted against the connecting rods (313), the two clamping arms (23) are abutted against the two connecting rods (313) respectively, the two ends of the connecting rods (313) are semi-cylindrical, one ends of the sliding rods (312) close to the connecting rods (313) are semi-cylindrical, one end of the holding arm (23) close to the connecting rod (313) is arranged in a semi-cylindrical shape.

4. The high performance detection liquid chromatograph of claim 2, wherein: two reset grooves (216) are formed in each sliding groove (213), the reset grooves (216) are also formed in the connecting holes (215) and the upper surface of the placing plate (21), the reset grooves (216) are respectively in one-to-one correspondence with the sliding rods (312), the connecting rods (313) and the clamping arms (23), the reset components (32) are in one-to-one correspondence with the reset grooves (216), each reset component (32) comprises a reset plate (321) and a reset spring (322), the reset plates (321) are arranged in the reset grooves (216) in a sliding mode, one end of each reset spring (322) is fixedly arranged in each reset groove (216), the other end of each reset spring (322) is fixedly connected with the corresponding reset plate (321), and the corresponding reset plate (321) is fixedly arranged on the moving component (31) close to the reset groove (216) where the reset plate (321) is located; when the return spring (322) is in a natural state, every two sliding rods (312) are abutted, and the connecting rod (313) is completely positioned in the connecting hole (215).

5. The high performance detection liquid chromatograph of claim 2, wherein: a buffer spring (217) is fixedly arranged in the sliding groove (213), and one end of the buffer spring (217) is fixedly connected with the bottom end of the fixed block (311); when the buffer spring (217) is in a natural state, the fixed block (311) is positioned between the two sliding rods (312) and the two clamping arms (23) are clamped on the sample tank (22).

6. The high performance detection liquid chromatograph of claim 1, wherein: coupling mechanism (4) include dead lever (41), be used for coupling assembling (42) with the position fixing of dead lever (41) to and be used for unlocking piece (43) with the stationary state cancellation of dead lever (41), dead lever (41) set up between two relative clamping arm (23) that set up, dead lever (41) link firmly with one of them clamping arm (23), are provided with on another clamping arm (23) to supply dead lever (41) to insert slot (231) of establishing, coupling assembling (42) set up in clamping arm (23) that are equipped with joint groove (411).

7. The high performance detection liquid chromatograph of claim 6, wherein: coupling assembling (42) are including inserted block (421) and joint spring (422), offer the groove (232) that slides that supplies inserted block (421) to slide on centre gripping arm (23), offer on dead lever (41) and supply inserted block (421) to insert joint groove (411) of establishing, groove (232) and joint groove (411) set up relatively, joint spring (422) set firmly in groove (232) that slides, and the one end of joint spring (422) links firmly with inserted block (421), the one end slope that inserted block (421) kept away from joint spring (422) sets up towards another centre gripping arm (23), unblock piece (43) are the unblock rope, and the one end of unblock piece (43) sets firmly on inserted block (421), and the other end of unblock piece (43) is located outside centre gripping arm (23); when the clamping spring (422) is in a natural state, the inserting block (421) is positioned in the clamping groove (411) and the sliding groove (232) at the same time.

8. A high performance detection liquid chromatograph according to claim 1, wherein: every row of a plurality of standing grooves (211) that set up on placing the dish (21) evenly distributed, the upper surface of placing the dish (21) slides and is provided with multiunit stabilizer bar (218), and the same row of centre gripping arm (23) towards same direction motion links firmly on a stabilizer bar (218) jointly, multiunit stabilizer bar (218) evenly distributed.

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