CN210243586U

CN210243586U - Automatic sample injector for pretreatment

Info

Publication number: CN210243586U
Application number: CN201921111366.0U
Authority: CN
Inventors: Yujiao Jian; 尖玉娇; Xiaoying Huang; 黄晓莹; Kunbin Wang; 王坤斌; Wenjie Lyu; 吕文杰; Yu Liu; 刘宇
Original assignee: Shandong Jingcheng Detection Technology Co ltd
Current assignee: Shandong Jingcheng Detection Technology Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-03
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses an automatic sample injector for pretreatment, including sampling arm, device main part, base and sampling needle, the device main part is fixed to be set up in the upper end of base, the sampling arm sets up in the upper end of device main part, the sampling needle passes through the fixed upper end that sets up at the sampling arm of connecting plate, the inside of base is provided with servo motor, servo motor's axle head stretches out the upper surface of base, the upper end of base is provided with the test tube mount, the test tube mount includes bottom plate, hexagonal prism a, an upper fixed plate and lead screw a, the upper surface of an upper fixed plate runs through and is provided with the test tube fixed orifices; through setting up hexagonal prism an and lead screw an, can control the upper fixed plate through rotating the nut and rise or descend along lead screw a, and then changed the interval between bottom plate and the upper fixed plate, be convenient for according to the interval between test tube length adjustment bottom plate and the upper fixed plate, make its fixed more firm to the test tube.

Description

Automatic sample injector for pretreatment

Technical Field

The utility model belongs to the technical field of the injector, concretely relates to automatic injector is used to pretreatment.

Background

The sample injector is a device which can quantitatively feed a sample into a chromatograph in chromatographic experimental analysis, the sample injector is divided into an artificial manual sample injector and an automatic sample injector, the automatic sample injector is an intelligent and automatic sample injector, and the automatic sample injector only needs to set sample injection parameters and put a sample to be detected, so that the automatic sample injection process can be completed.

The automatic sample injector is used in current pretreatment, need to be equipped with the test tube that waits to detect liquid and place on the test tube mount and fix, traditional test tube mount is formed by two-layer foraminiferous frame plate fixed connection, its test tube length that can fix is specific, when test tube length is less than the interval between two-layer foraminiferous frame plate, can not fix the test tube, when test tube length is far greater than the interval between two-layer foraminiferous frame plate, the test tube easily takes place the problem of empting, for this reason we provide an automatic sample injector for pretreatment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an autosampler is used to pretreatment, with the current autosampler is used to pretreatment who proposes in solving above-mentioned background art, need will be equipped with the test tube that waits to detect liquid and place on the test tube mount and fix, traditional test tube mount is formed by two-layer foraminiferous frame plate fixed connection, its test tube length that can fix is specific, when test tube length is less than the interval between the two-layer foraminiferous frame plate, can not fix the test tube, when test tube length is far more than the interval between the two-layer foraminiferous frame plate, the problem of empting easily takes place for the test tube.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic sample injector for pretreatment comprises a sample injection arm, a device main body, a base and a sample injection needle, wherein the device main body is fixedly arranged at the upper end of the base, the sample injection arm is arranged at the upper end of the device main body, the sample injection needle is fixedly arranged at the upper end of the sample injection arm through a connecting plate, a servo motor is arranged inside the base, the shaft end of the servo motor extends out of the upper surface of the base, a test tube fixing frame is arranged at the upper end of the base and comprises a lower fixing plate, a hexagonal prism a, an upper fixing plate and a lead screw a, the upper surface of the upper fixing plate is provided with a test tube fixing hole in a penetrating manner, the upper surface of the lower fixing plate is provided with a blind hole with the same size as the test tube fixing hole, the lower end of the hexagonal prism a is fixedly connected with the shaft end of the servo motor, the middle part of the upper surface, the lower end of the screw rod a is fixedly arranged at the upper end of the hexagonal prism a, the upper fixing plate is sleeved on the screw rod a in a sliding mode, and the lower end of the screw rod a is provided with a nut in a screwing mode.

Preferably, the inside four corners of base is provided with the cavity, the interior roof of cavity is rotated through the bearing and is provided with interior hexagonal slide cartridge, the surface of interior hexagonal slide cartridge is provided with actuating mechanism, the lower extreme of interior hexagonal slide cartridge slides the embedding and has hexagonal prism b, hexagonal prism b's lower terminal surface is fixed and is provided with lead screw b, lead screw b runs through the lower terminal surface of base, just lead screw b closes with the base soon and is connected.

Preferably, actuating mechanism includes worm wheel and worm, worm wheel and worm mesh mutually, the outer surface of hexagonal slide cartridge including the worm wheel is fixed to be established, the inside of bearing embedding base is passed through to the one end of worm, and the front surface of base is run through to the other end, and the end portion that stretches out of worm is fixed and is provided with the knob.

Preferably, a gasket is fixedly arranged on the lower end face of the screw rod b, a groove is formed in the lower end face of the base, and the gasket is matched with the groove.

Preferably, the upper surface of the base is fixedly provided with a cylinder, the cylinder is sleeved at the shaft end of the servo motor in a clearance manner, and the outer surface of the cylinder is fixedly sleeved with a tray.

Preferably, the upper end of the test tube fixing hole is provided with a concave edge, and the inner surface of the concave edge is an arc surface.

Preferably, the edge of the lower surface of the upper fixing plate is fixedly provided with a sliding cylinder with a downward opening, the upper surface of the lower fixing plate is conveniently and fixedly provided with a sliding rod, and the sliding rod is matched with the sliding cylinder.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through setting up hexagonal prism an and lead screw an, can control the upper fixed plate through rotating the nut and rise or descend along lead screw a, and then changed the interval between bottom plate and the upper fixed plate, be convenient for according to the interval between test tube length adjustment bottom plate and the upper fixed plate, make its fixed more firm to the test tube.

(2) Through design actuating mechanism and lead screw b, realize lead screw b's lift, the adjusting device of being convenient for is in horizontal position, the guarantee advances the needle and docks accurately with the test tube, set up actuating mechanism, utilize worm gear's auto-lock nature, make it adjust the back can automatic auto-lock, set up the gasket, prevent that lead screw b's lower extreme from causing the damage to the mesa that equipment was placed, set up the recess, be convenient for accomodate the gasket to the recess in, set up the tray, be convenient for collect and unify the clearance to liquid, set up concave edge, be convenient for insert and put the test tube, set up slide cartridge and slide bar, it is spacing to upper fixed plate and bottom plate, avoid its relative rotation.

Drawings

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

fig. 2 is a schematic structural diagram of a top view of the tray of the present invention;

fig. 3 is a schematic structural view of a cross-sectional view of an upper fixing plate of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 1;

FIG. 5 is a schematic view of the connection structure of the worm and gear mechanism of the present invention;

in the figure: 1. a sample introduction arm; 2. a device main body; 3. a base; 4. a tray; 5. a cylinder; 6. a test tube holder; 7. a lower fixing plate; 8. a hexagonal prism a; 9. an upper fixing plate; 10. a screw rod a; 11. a sample injection needle; 12. a concave edge; 13. an inner hexagonal sliding barrel; 14. a drive mechanism; 15. a hexagonal prism b; 16. a screw rod b; 17. a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Examples

Referring to fig. 1-5, the present invention provides a technical solution: an automatic sample injector for pretreatment comprises a sample injection arm 1, a device main body 2, a base 3 and a sample injection needle 11, wherein the device main body 2 is fixedly arranged at the upper end of the base 3, the sample injection arm 1 is arranged at the upper end of the device main body 2, the sample injection needle 11 is fixedly arranged at the upper end of the sample injection arm 1 through a connecting plate, a servo motor is arranged inside the base 3, the shaft end of the servo motor extends out of the upper surface of the base 3, a test tube fixing frame 6 is arranged at the upper end of the base 3, the test tube fixing frame 6 comprises a lower fixing plate 7, a hexagonal prism a8, an upper fixing plate 9 and a screw rod a10, the upper surface of the upper fixing plate 9 is provided with a test tube fixing hole in a penetrating manner, the upper surface of the lower fixing plate 7 is provided with a blind hole with the same size as the test tube fixing hole, the lower end of the hexagonal prism a8 is fixedly connected with the shaft, the lower end of the screw rod a10 is fixedly arranged at the upper end of a hexagonal prism a8, the upper fixing plate 9 is slidably sleeved on the screw rod a10, the lower end of the screw rod a10 is rotatably provided with a nut, the hexagonal prism a8 and the screw rod a10 are arranged, the lower fixing plate 7 is slidably sleeved on a hexagonal prism a8, the nut is rotatably arranged on the screw rod a10, the upper fixing plate 9 is slidably sleeved on the screw rod a10, the upper fixing plate 9 can be controlled to ascend or descend along the screw rod a10 by rotating the nut, the distance between the lower fixing plate 7 and the upper fixing plate 9 is changed, the distance between the lower fixing plate and the upper fixing plate is conveniently adjusted according to the length of a test tube, and the test tube can be.

In this embodiment, cavities 17 are arranged at four corners inside the base 3, an inner hexagonal slide 13 is rotatably arranged on an inner top wall of the cavity 17 through a bearing, a driving mechanism 14 is arranged on an outer surface of the inner hexagonal slide 13, a hexagonal cylinder b15 is slidably embedded in a lower end of the inner hexagonal slide 13, a lead screw b16 is fixedly arranged on a lower end surface of the hexagonal cylinder b15, the lead screw b16 penetrates through the lower end surface of the base 3, the lead screw b16 is rotatably connected with the base 3, the driving mechanism 14 and the lead screw b16 are arranged, the inner hexagonal slide 13 is driven to rotate through the driving mechanism 14, the inner hexagonal slide 13 drives the hexagonal cylinder b15 and the lead screw b16 to rotate, the lead screw b16 is rotatably connected with the base 3, and meanwhile, the hexagonal cylinder b15 slides up and down along the inner hexagonal slide 13, so as to achieve lifting of the lead screw b16, which is convenient for adjusting equipment to be in a horizontal.

In this embodiment, the driving mechanism 14 includes a worm wheel and a worm, the worm wheel and the worm are engaged with each other, a lead angle of the worm is smaller than an equivalent friction angle between teeth of the engaged wheel, the worm wheel is fixedly sleeved on an outer surface of the hexagonal inner sliding barrel 13, one end of the worm is embedded into the base 3 through a bearing, the other end of the worm penetrates through a front surface of the base 3, a knob is fixedly arranged at an end of an extending end of the worm, and the worm wheel and the worm have self-locking performance by arranging the driving mechanism 14, so that self-locking can be realized after adjustment.

In this embodiment, the fixed gasket that is provided with of lower terminal surface of lead screw b16, the lower terminal surface of base 3 is seted up flutedly, and the gasket cooperatees with the recess, through setting up the gasket, prevents that the lower extreme of lead screw b16 from causing the damage to the mesa that equipment was placed, sets up the recess, is convenient for accomodate the gasket to the recess in.

In this embodiment, the fixed surface of base 3 is provided with drum 5, and 5 clearance sleeves of drum are established at servo motor's axle head, and the fixed surface cover of drum 5 is equipped with tray 4, and through setting up tray 4, equipment has liquid drippage at the sampling in-process, through setting up tray 4, is convenient for collect and unify the clearance to liquid.

In this embodiment, concave edge 12 has been seted up to the upper end of test tube fixed orifices, and the internal surface of concave edge 12 sets up to the arc surface, through setting up concave edge 12, is convenient for insert and puts the test tube.

In this embodiment, the edge of the lower surface of the upper fixing plate 9 is fixedly provided with a slide cylinder with a downward opening, the upper surface of the lower fixing plate 7 is conveniently and fixedly provided with a slide rod, the slide rod is matched with the slide cylinder, and the upper fixing plate 9 and the lower fixing plate 7 are limited by the slide cylinder and the slide rod, so that relative rotation of the upper fixing plate and the lower fixing plate is avoided.

The utility model discloses a theory of operation and use flow: firstly, a lower fixing plate 7 is sleeved on a hexagonal prism a8 in a sliding manner, then a nut is screwed on a screw rod a10, then an upper fixing plate 9 is sleeved on a screw rod a10 in a sliding manner, the upper fixing plate 9 can be controlled to ascend or descend along the screw rod a10 by rotating the nut, and further the distance between the lower fixing plate 7 and the upper fixing plate 9 is changed, so that the distance between test tubes can be conveniently adjusted according to the lengths of the test tubes, the test tubes can be limited and fixed, then a test tube fixing frame 6 is driven to rotate by a servo motor, a sample injection arm 1 drives a sample injection needle 11 to ascend, descend and rotate, the solution in the test tubes is sucked, and the sucked solution is injected into a chromatograph, so that the solution;

by arranging the driving mechanism 14 and the screw rod b16, the driving mechanism 14 drives the inner hexagonal slide 13 to rotate, the inner hexagonal slide 13 drives the hexagonal prism b15 and the screw rod b16 to rotate, so that the screw rod b16 is screwed with the base 3, and the hexagonal prism b15 slides up and down along the inner hexagonal slide 13, thereby realizing the lifting of the screw rod b16, facilitating the adjustment of the device to be in a horizontal position, ensuring the accurate butt joint of the sample injection needle 11 and the test tube, by arranging the driving mechanism 14, because the worm gear has self-locking property, the self-locking can be realized after the adjustment, by arranging the gasket, preventing the lower end of the screw rod b16 from damaging the table board for placing the device, arranging the groove, facilitating the storage of the gasket into the groove, by arranging the tray 4, the device can have liquid dripping in the sampling process, by arranging the tray 4, facilitating the collection and unified cleaning of the liquid, by arranging the concave edge 12, facilitating the insertion and placement, through setting up slide cartridge and slide bar, carry on spacingly to upper fixed plate 9 and bottom plate 7, avoid its relative rotation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an autoinjector is used to pretreatment, is including advancing kind arm (1), device main part (2), base (3) and appearance needle (11), the fixed upper end that sets up in base (3) of device main part (2), advance kind arm (1) and set up the upper end at device main part (2), it sets up the upper end at kind arm (1) to advance kind needle (11) through the connecting plate is fixed, its characterized in that: the test tube fixing device is characterized in that a servo motor is arranged inside the base (3), the shaft end of the servo motor extends out of the upper surface of the base (3), a test tube fixing frame (6) is arranged at the upper end of the base (3), the test tube fixing frame (6) comprises a lower fixing plate (7), a hexagonal prism a (8), an upper fixing plate (9) and a screw rod a (10), a test tube fixing hole is formed in the upper surface of the upper fixing plate (9) in a penetrating mode, a blind hole which is the same as the test tube fixing hole in size is formed in the upper surface of the lower fixing plate (7), the lower end of the hexagonal prism a (8) is fixedly connected with the shaft end of the servo motor, an inner hexagonal through hole is formed in the middle of the upper surface of the lower fixing plate (7) in a penetrating mode, the lower fixing plate (7) is slidably sleeved on the hexagonal prism a (8), and the lower, the upper fixing plate (9) is sleeved on the screw rod a (10) in a sliding mode, and the lower end of the screw rod a (10) is provided with a nut in a screwing mode.

2. The automatic sample injector for pretreatment according to claim 1, wherein: the inner four corners of the base (3) are provided with cavities (17), the inner top wall of the cavity (17) is provided with an inner hexagonal sliding barrel (13) in a rotating mode through a bearing, the outer surface of the inner hexagonal sliding barrel (13) is provided with a driving mechanism (14), the lower end of the inner hexagonal sliding barrel (13) is embedded with a hexagonal prism b (15) in a sliding mode, the lower end face of the hexagonal prism b (15) is fixedly provided with a screw rod b (16), the screw rod b (16) penetrates through the lower end face of the base (3), and the screw rod b (16) is connected with the base (3) in a rotating mode.

3. The automatic sample injector for pretreatment according to claim 2, wherein: actuating mechanism (14) include worm wheel and worm, worm wheel and worm mesh mutually, the surface of hexagonal slide (13) including is established to the fixed cover of worm wheel, the inside of bearing embedding base (3) is passed through to the one end of worm, and the front surface of base (3) is run through to the other end, and the end portion that stretches out of worm is fixed and is provided with the knob.

4. The automatic sample injector for pretreatment according to claim 2, wherein: the lower end face of the screw rod b (16) is fixedly provided with a gasket, the lower end face of the base (3) is provided with a groove, and the gasket is matched with the groove.

5. The automatic sample injector for pretreatment according to claim 1, wherein: the upper surface of base (3) is fixed and is provided with drum (5), drum (5) clearance cover is established at servo motor's axle head, just the outer fixed cover of surface of drum (5) is equipped with tray (4).

6. The automatic sample injector for pretreatment according to claim 1, wherein: the upper end of the test tube fixing hole is provided with a concave edge (12), and the inner surface of the concave edge (12) is an arc surface.

7. The automatic sample injector for pretreatment according to claim 1, wherein: the edge of the lower surface of the upper fixing plate (9) is fixedly provided with a sliding cylinder with a downward opening, the upper surface of the lower fixing plate (7) is conveniently and fixedly provided with a sliding rod, and the sliding rod is matched with the sliding cylinder.