CN215894653U - Automatic sample injector of thermal analysis instrument - Google Patents

Abstract

The utility model discloses an automatic sample injector of a thermal analyzer, which comprises a machine base, a plurality of sample storage positions and a plurality of sample discharge pipes, wherein the plurality of sample storage positions are used for storing sample bottles; the X-axis driving mechanism is arranged on the base; the Y-axis driving mechanism is connected with the X-axis driving mechanism, the lifting mechanism is connected with the Y-axis driving mechanism, the lifting mechanism is provided with a mounting seat, the mounting seat is provided with a clamp and an absorber, the clamp is connected with a driver, the driver is used for driving the clamp to clamp the airtight cover, the absorber can be in butt joint with the discharge pipe and absorbs a sample, and the driver is provided with an electric insertion position; the control line is provided with an electric insertion part which is in insertion fit with the electric insertion position; the fastener is used for fixing the electric connection part. The electric connection part of the control line can be tightly connected to the electric connection position of the driver through the fastener, so that the defect of equipment failure and halt caused by the looseness of the control line can be avoided, and the reliability of the equipment is effectively improved.

Description

Automatic sample injector of thermal analysis instrument

Technical Field

The utility model relates to the technical field of thermal analyzers, in particular to an automatic sample injector of a thermal analyzer.

Background

The thermal analyzer is used for separating and measuring organic compounds, and mainly adopts a heating mode to release the organic compounds from a sample bottle so as to introduce the organic compounds into a detection system for further detection. In the process of sampling, the automatic sampler of the thermal analyzer generally opens the sample bottle by driving the clamp through the mechanical arm, however, the mechanical arm vibrates in the moving process, particularly when the mechanical arm is just started, turned or just stopped, the vibration amplitude is more obvious, the motion is not stable, the control line which is connected with and controls the clamp to act is easy to loosen, equipment failure is caused to stop, and the efficiency is further influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the automatic sample injector of the thermal analyzer, and the control line connection of the automatic sample injector is stable and reliable.

An autosampler for a thermal analyzer according to an embodiment of the present invention comprises: the device comprises a base and a plurality of positioning devices, wherein the base is provided with a plurality of placing positions for storing sample bottles, the sample bottles extend upwards to be provided with a discharge pipe, and the base is also provided with an airtight cover for sealing the discharge pipe; the X-axis driving mechanism is arranged on the stand; the Y-axis driving mechanism is connected to the X-axis driving mechanism, and the X-axis driving mechanism is used for driving the Y-axis driving mechanism to move along the X-axis direction; the lifting mechanism is connected to the Y-axis driving mechanism, the Y-axis driving mechanism is used for driving the lifting mechanism to move along the Y-axis direction, the lifting mechanism is provided with a mounting seat, the lifting mechanism is used for driving the mounting seat to move along the vertical direction, the mounting seat is provided with a clamp and an absorber which are positioned above the placing position, the clamp is connected with a driver, the driver is used for driving the clamp to clamp the airtight cover, the absorber can be in butt joint with the discharge pipe and absorb a sample, and the driver is provided with an electrical plug-in position; the control line is provided with an electrical insertion part which is in insertion fit with the electrical insertion position; and the fastening piece is connected to the mounting seat and is used for fixing the electric connection part.

The technical scheme at least has the following beneficial effects: the electric property grafting portion that makes the control line through the fastener can the fastening connection in the electric property grafting position of driver, when X axle actuating mechanism, Y axle actuating mechanism and elevating system cooperation drive anchor clamps and the extractor remove in certain cubical space within range, not hard up problem can not appear in the control line, thereby the driver can normally drive the airtight lid of anchor clamps centre gripping and open the sample bottle, so that the discharging pipe butt joint of extractor and sample bottle absorbs the sample to the thermal analysis appearance, consequently, can avoid leading to the drawback of equipment fault shut down because of the control line is not hard up, effectively improve equipment's reliability, improve into kind efficiency.

According to some embodiments of the utility model, the fastening member is a binding band, and the binding band can be pressed against an end of the electrical insertion part away from the electrical insertion position.

According to some embodiments of the utility model, the fastener is provided as a slipknot tie.

According to some embodiments of the utility model, the strap is elastic.

According to some embodiments of the utility model, the fastening member includes a spring and a pressing plate, the mounting base is provided with a rotating shaft located on one side of the electrical insertion site, a flange is arranged at an end portion of the rotating shaft, the pressing plate is rotatably connected to the rotating shaft, the spring is sleeved on the rotating shaft, one end of the spring abuts against the flange, the other end of the spring abuts against the pressing plate, and the spring pushes the pressing plate to abut against one end of the electrical insertion part, which is away from the electrical insertion site.

According to some embodiments of the utility model, the clamp comprises a first clamping block and a second clamping block which are matched with each other, the opposite surfaces of the first clamping block and the second clamping block are respectively provided with a groove, the top of the airtight cover is provided with a clamping end, and the two grooves are combined to form a through groove matched with the clamping end.

According to some embodiments of the utility model, the groove walls of both grooves are provided with a buffer layer.

According to some embodiments of the utility model, the surface of the buffer layer is provided with a plurality of protrusions, and the plurality of protrusions are uniformly distributed.

According to some embodiments of the utility model, the bottom of the extractor is provided with a recess, the inner diameter of the recess matches the outer diameter of the tapping pipe, the recess can be sleeved on the tapping pipe, and the recess is connected with the tapping pipe in a sealing manner.

According to some embodiments of the utility model, the extractor is further provided with a sealing ring, which is arranged on the bottom wall of the recess and can be pressed against the end of the tapping pipe.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a top view of an autosampler in an embodiment of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is a schematic structural diagram of an X-axis driving mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a clamp according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of an extractor in an embodiment of the present invention;

FIG. 6 is a partial cross-sectional view of a sample vial engaged with an airtight cap in an embodiment of the present invention;

FIG. 7 is a schematic view of a fastener according to another embodiment of the utility model.

Reference numerals:

a base 100; a placement bit 110; an airtight cover 120; a clamping end 121; a control line 130; an electrical connection part 131; a fastener 140; a spring 141; a pressure plate 142;

an X-axis drive mechanism 200; a first fixing base 210; a first slide rail 220; a first slider 230; a first screw 240; a first pair of nuts 250; a first drive motor 260;

a Y-axis drive mechanism 300;

a lifting mechanism 400; a mounting seat 410; a rotating shaft 411; a flange 412; a clamp 420; a first clamp block 421; the groove 4211; a buffer layer 4212; a boss 4213; a second clamp block 422; a driver 430; an electrical plug site 431; an extractor 440; a recessed portion 441; a seal ring 442;

a sample bottle 500; a tapping pipe 510.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 3, an embodiment of the present invention provides an automatic sample injector for a thermal analyzer, including a base 100, an X-axis driving mechanism 200, a Y-axis driving mechanism 300, a lifting mechanism 400, a control line 130, and a fastener 140, where the base 100 is provided with a plurality of placement locations 110, the placement locations 110 may be through holes or counter bored structures, the placement locations 110 are used to store sample bottles 500, the sample bottles 500 may be used to store bulk samples or liquid samples, the sample bottles 500 are provided with a discharge pipe 510 extending upward, the base 100 is further provided with an airtight cover 120 for sealing the discharge pipe 510, and the X-axis driving mechanism 200 is disposed in the base 100; the Y-axis driving mechanism 300 is connected to the X-axis driving mechanism 200, the X-axis driving mechanism 200 is used for driving the Y-axis driving mechanism 300 to move along the X-axis direction, the lifting mechanism 400 is connected to the Y-axis driving mechanism 300, the Y-axis driving mechanism 300 is used for driving the lifting mechanism 400 to move along the Y-axis direction, the lifting mechanism 400 is provided with a mounting seat 410, the lifting mechanism 400 can drive the mounting seat 410 to move along the vertical direction, the mounting seat 410 is provided with a clamp 420 and an absorber 440 which are positioned above the placing position 110, the clamp 420 is connected with a driver 430, the driver 430 is used for driving the clamp 420 to clamp the airtight cover 120, the absorber 440 can be butted with the discharge pipe 510 and absorb a sample, the absorber 440 is generally connected with the thermal analyzer through a hose to absorb the sample to the thermal analyzer, the driver 430 is provided with an electrical plugging position 431, the control line 130 is provided with an electrical plugging portion 131 which is plugged and matched with the electrical plugging position 431, the control line 130 is electrically connected to the driver 430, the other end of the control line 130 is connected to the controller to control the operation of the clamp 420, the mounting base 410 is connected to the fastening member 140, and the fastening member 140 is used to fix the electrical plug portion 131, so that the electrical plug portion 131 is firmly connected to the electrical plug portion 431.

Specifically, the X-axis driving mechanism 200 includes a first fixed seat 210, a first slide rail 220, a first slide seat 230 slidably engaged with the first slide rail 220, a first screw 240, a first nut pair 250 matched with the first screw 240, and a first driving motor 260, the first fixed seat 210 is fixed to the base 100, the first slide rail 220 is mounted on the first fixed seat 210, and the length direction of the first slide rail 220 is arranged along the X-axis direction, the first nut pair 250 is fixed to the first slide seat 230, the first screw 240 is parallel to the first slide rail 220, one end of the first screw 240 is connected to the first driving motor 260, the other end is connected to the first nut pair 250, the Y-axis driving mechanism 300 is mounted on the first slide seat 230, so that the Y-axis driving mechanism 300 can be driven by the first driving motor 260 to move along the X-axis direction to drive the clamp 420 and the suction device 440 to move along the X-axis direction, it can be understood that the structures of the Y-axis driving mechanism 300 and the lifting mechanism 400 are the same as the structure of the X-axis driving mechanism 200, wherein, the second fixing seat (not shown in the figure) of the Y-axis driving mechanism 300 is installed on the first sliding seat 230, the second sliding rail (not shown in the figure) and the second screw (not shown in the figure) of the Y-axis driving mechanism 300 are both arranged along the Y-axis direction, the third fixing seat (not shown in the figure) of the lifting mechanism 400 is installed on the second sliding seat (not shown in the figure) of the Y-axis driving mechanism 300, the third sliding rail (not shown in the figure) and the third screw (not shown in the figure) of the lifting mechanism 400 are both arranged along the vertical direction, the mounting seat 410 is installed on the third sliding seat (not shown in the figure) of the lifting mechanism 400, which is not described herein again, therefore, the X-axis driving mechanism 200, the Y-axis driving mechanism 300 and the lifting mechanism 400 can cooperate to drive the clamp 420 and the suction device 440 to move within a certain three-dimensional space range, so that the clamp 420 clamps the airtight caps 120 located at different positions and opens the sample bottles 500, the aspirator 440 interfaces with the outlet tube 510 of the sample vial 500 and aspirates the sample to the thermal analyzer.

When the device is used, the X-axis driving mechanism 200, the Y-axis driving mechanism 300 and the lifting mechanism 400 cooperate to drive the clamp 420 and the extractor 440 to move to the target sample bottle 500, the clamp 420 is moved to the airtight cap 120 of the target sample bottle 500, the driver 430 drives the clamp 420 to clamp the airtight cap 120 and open the sample bottle 500, the extractor 440 is moved to the sample bottle 500, the extractor 440 is butted with the discharge tube 510 and extracts the sample to the thermal analyzer for detection, the fastener 140 enables the electrical plug part 131 of the control wire 130 to be tightly connected to the electrical plug position 431 of the driver 430, and the control wire 130 does not loosen, so that the driver 430 can normally drive the clamp 420 to clamp the airtight cap 120 and open the sample bottle 500, and thus, the defect of equipment fault shutdown caused by looseness of the control line 130 can be avoided, the reliability of the equipment is effectively improved, and the sampling efficiency is improved.

Referring to fig. 1 and 2, it can be understood that the fastening member 140 is configured as a strap, the strap can be pressed against an end of the electrical connection portion 131 away from the electrical connection position 431, and the strap binds the electrical connection portion 131 and the mounting seat 410 together, so that the electrical connection portion 131 is fixed to the electrical connection position 431, and thus the connection looseness problem of the control line 130 does not occur, the machine halt is avoided, and the reliability of the device is effectively improved.

It will be appreciated that the fastener 140 is configured as a snap-fit strap to facilitate binding of the electrical plug 131.

It can be understood that the strap has elasticity, so that after the electrical plug part 131 is bound, the electrical plug part 131 can be pressed against the electrical plug part 431 by the elasticity of the strap, so that the control line 130 is stably connected.

Referring to fig. 4 and 6, it can be understood that the clamp 420 includes a first clamping block 421 and a second clamping block 422 which are matched with each other, specifically, the first clamping block 421 and the second clamping block 422 are slidably connected to the mounting base 410 along the same straight direction, the driver 430 may be configured as an air cylinder, the driver 430 is fixed to the first clamping block 421 and a driving shaft of the driver 430 is connected to the second clamping block 422, so that the driver 430 can drive the first clamping block 421 and the second clamping block 422 to move towards each other to clamp the airtight cover 120 or move away from each other to release the airtight cover 120, opposite surfaces of the first clamping block 421 and the second clamping block 422 are each provided with a groove 4211, the top of the airtight cover 120 is provided with a clamping end 121, the clamping end 121 is in a cylindrical structure, the two grooves 4211 are combined to form a through groove which is matched with the clamping end 121, so that contact areas of the first clamping block 421 and the clamping end 121, and contact areas of the second clamping block 422 and the clamping end 121 can be increased, thereby, the clamp 420 can firmly clamp the airtight cover 120 and prevent the airtight cover 120 from falling.

Referring to fig. 4, it can be understood that the groove walls of the two grooves 4211 are provided with buffer layers 4212, the buffer layers 4212 can be adhered to the groove walls of the grooves 4211, the buffer layers 4212 can be rubber pads, the rubber pads have higher friction force when contacting with the clamping ends 121 to further stabilize the clamping of the airtight cover 120, and the rubber pads have a certain deformation amount to prevent the airtight cover 120 from being crushed.

Referring to fig. 4, it can be understood that the surface of the buffer layer 4212 is provided with a plurality of protrusions 4213, the plurality of protrusions 4213 are uniformly distributed, and the protrusions 4213 are disposed on opposite surfaces of the two buffer layers 4212, so as to further increase the friction between the buffer layers 4212 and the clamping end 121, and further stabilize the clamping airtight cover 120.

Referring to fig. 5, it can be understood that a concave portion 441 is disposed at the bottom of the extractor 440, the concave portion 441 opens downward, the inner diameter of the concave portion 441 matches the outer diameter of the discharging pipe 510, the concave portion 441 can be sleeved on the discharging pipe 510, and the concave portion 441 is hermetically connected with the discharging pipe 510, so that the extractor 440 and the discharging pipe 510 are precisely butted to extract a sample.

Referring to fig. 5, it can be understood that the extractor 440 is further provided with a sealing ring 442, the sealing ring 442 is provided with a bottom wall of the concave portion 441, and the sealing ring 442 can be pressed against the end portion of the discharging pipe 510, so that the extractor 440 is hermetically connected with the discharging pipe 510, and the sample leakage problem during sample extraction is avoided.

Referring to fig. 7, in other embodiments, it can be understood that the fastening member 140 includes a spring 141 and a pressing plate 142, the mounting base 410 is provided with a rotating shaft 411 located on one side of the electrical plugging location 431, a central axis of the rotating shaft 411 is arranged along a plugging direction of the electrical plugging location 431, an end portion of the rotating shaft 411 is provided with a flange 412, the pressing plate 142 is rotatably connected to the rotating shaft 411, the spring 141 is sleeved on the rotating shaft 411, and one end of the spring 141 abuts against the flange 412 and the other end abuts against the pressing plate 142, by virtue of an elastic force of the spring 141, the pressing plate 142 abuts against an end of the electrical plugging portion 131 away from the electrical plugging location 431, the electrical plugging portion 131 is tightly connected with the electrical plugging location 431, the control line 130 is not prone to loose, reliability of the apparatus is improved, when the electrical plugging portion 131 needs to be pulled out, the pressing plate 142 is rotated to separate the pressing plate 142 from the electrical plugging portion 131, the structure is simple and easy to implement, the operation is convenient.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. An autosampler for a thermal analyzer, comprising:

the device comprises a base and a plurality of positioning devices, wherein the base is provided with a plurality of placing positions for storing sample bottles, the sample bottles extend upwards to be provided with a discharge pipe, and the base is also provided with an airtight cover for sealing the discharge pipe;

the X-axis driving mechanism is arranged on the stand;

the Y-axis driving mechanism is connected to the X-axis driving mechanism, and the X-axis driving mechanism is used for driving the Y-axis driving mechanism to move along the X-axis direction;

the lifting mechanism is connected to the Y-axis driving mechanism, the Y-axis driving mechanism is used for driving the lifting mechanism to move along the Y-axis direction, the lifting mechanism is provided with a mounting seat, the lifting mechanism is used for driving the mounting seat to move along the vertical direction, the mounting seat is provided with a clamp and an absorber which are positioned above the placing position, the clamp is connected with a driver, the driver is used for driving the clamp to clamp the airtight cover, the absorber can be in butt joint with the discharge pipe and absorb a sample, and the driver is provided with an electrical plug-in position;

the control line is provided with an electrical insertion part which is in insertion fit with the electrical insertion position;

and the fastening piece is connected to the mounting seat and is used for fixing the electric connection part.

2. The autosampler of a thermal analyzer according to claim 1, wherein: the fastener sets up to the bandage, the bandage can support press in the electric property grafting portion deviates from the one end of electric property grafting position.

3. The autosampler of a thermal analyzer according to claim 1, wherein: the fastener is designed as a slipknot ribbon.

4. The autosampler of a thermal analyzer according to claim 2, wherein: the strap is elastic.

5. The autosampler of a thermal analyzer according to claim 1, wherein: the fastener includes spring and clamp plate, the mount pad is provided with and is located the pivot of electrical property grafting position one side, the tip of pivot is provided with the flange, the clamp plate rotate connect in the pivot, the spring housing is located the pivot, and the one end butt of spring in the flange, the other end butt in the clamp plate, the spring promotes the clamp plate support press in electrical property grafting portion deviates from the one end of electrical property grafting position.

6. The autosampler of a thermal analyzer according to claim 1, wherein: the clamp comprises a first clamping block and a second clamping block which are matched with each other, grooves are formed in the opposite surfaces of the first clamping block and the second clamping block, a clamping end is arranged at the top of the airtight cover, and the two grooves are combined to form a through groove matched with the clamping end.

7. The autosampler of a thermal analyzer according to claim 6, wherein: and buffer layers are arranged on the groove walls of the two grooves.

8. The autosampler of a thermal analyzer according to claim 7, wherein: the surface of buffer layer is provided with a plurality of archs, and is a plurality of protruding evenly distributed.

9. The autosampler of a thermal analyzer according to claim 1, wherein: the bottom of the suction device is provided with a concave position, the inner diameter of the concave position is matched with the outer diameter of the discharge pipe, the discharge pipe can be sleeved with the concave position, and the concave position is connected with the discharge pipe in a sealing mode.

10. The autosampler of a thermal analyzer according to claim 9, wherein: the suction device is also provided with a sealing ring, the sealing ring is arranged on the bottom wall of the concave position, and the sealing ring can abut against the end part of the discharge pipe.

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