CN216484841U

CN216484841U - Micro-liquid titration device

Info

Publication number: CN216484841U
Application number: CN202122939478.9U
Authority: CN
Inventors: 马小龙; 徐军
Original assignee: Tianjin Tongchuangshengyi Technology Co ltd
Current assignee: Tianjin Tongchuangshengyi Technology Co ltd
Priority date: 2021-11-28
Filing date: 2021-11-28
Publication date: 2022-05-10
Anticipated expiration: 2031-11-28

Abstract

The utility model relates to the technical field of environmental detection, and discloses a micro-liquid titration device which comprises two supporting blocks, a screw rod, a stepping motor, a peristaltic pump and a positioning plate, wherein one side of the top ends of the two supporting blocks is provided with a movable hole, two ends of the screw rod are movably connected with an inner cavity of the movable hole, the outer ring of the screw rod is in threaded connection with a threaded sleeve, and the middle part of the top of the threaded sleeve is connected with a connecting pipe. This trace liquid titration outfit uses through the cooperation of step motor, screw rod and thread bush isotructure, and step motor's rotation can drive the gear revolve of being connected with it, and the gear drives the screw rod through the ring gear with it meshing and rotates, and the rotation of screw rod can make the thread bush remove at the direction at screw rod place, and the thread bush drives the syringe needle and removes, and the position of syringe needle can change, and the device can be quick change the position of syringe needle, improves the efficiency of sample application.

Description

Micro-liquid titration device

Technical Field

The utility model relates to the technical field of environmental detection, in particular to a micro-liquid titration device.

Background

People pay more attention to the ecological environment, so that the environment detection technology becomes more and more powerful, the environment detection can present the environment pollution condition and the overall quality in an image-like mode, the environment detection is the basis and an important way of environment protection and treatment work, and medium objects of the environment detection can be roughly divided into water quality detection, air detection, soil detection, solid waste detection, biological detection, noise and vibration detection, electromagnetic radiation detection, radioactivity detection, heat detection, light detection, sanitation (pathogens, viruses, parasites and the like) detection and the like.

In the sample detection process, sometimes a worker needs to sample with a pipette, in the actual operation process, the pipette is taken by the worker to drop samples, so that the pipette inevitably shakes slightly, and sample dropping failure is likely to be caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a micro-liquid titration device which has the advantages of accurately controlling the liquid amount of a point and the position of a needle head, improving the accuracy of a detection result and the working efficiency of workers and the like, and solves the problems in the background technology.

The utility model provides the following technical scheme: a micro-liquid titration device comprises two supporting blocks, a screw rod, a stepping motor, a peristaltic pump and a positioning plate, wherein one side of the top ends of the two supporting blocks is provided with a movable hole, the two ends of the screw rod are movably connected with an inner cavity of the movable hole, the outer ring of the screw rod is in threaded connection with a threaded sleeve, the middle part of the top of the threaded sleeve is connected with a connecting pipe, the middle part of the bottom of the threaded sleeve is provided with a sliding groove, the inner sides of the top ends of the two supporting blocks are connected with a sliding rod which is movably connected with the inner cavity of the sliding groove, the middle part of the front side of the screw rod is connected with a supporting rod, the inner cavity at the other end of the supporting rod is clamped with a needle head, the needle head is connected with one end of the connecting pipe, the middle part of the bottom of the supporting rod is embedded with a signal transmitting receiver, the middle parts of the front sides of the two supporting blocks are both movably connected with a lead screw, the outer ring of the lead screw is in threaded connection with a threaded plate, the positioning plate is movably connected with the threaded plate, the bottom of the positioning plate is provided with a signal reflection block through a support rod, the rear sides of the two support blocks are provided with peristaltic pumps, and the peristaltic pumps are connected with the other end of the connecting pipe through hoses.

Preferably, the outer ring of one end of the screw is connected with a toothed ring, the other end of the top end of one support block is fixedly sleeved with a stepping motor, the tail end of an output shaft of the stepping motor is connected with a gear, the other end of the gear is movably connected with the support block through a connecting rod, and the gear is meshed with the toothed ring.

Preferably, the signal transceiver is located right above the signal reflection block.

Preferably, the two ends of the top of the positioning plate are both connected with sliding sleeves, the threaded plate is movably connected with the inner cavities of the sliding sleeves, the middle of the bottom of the positioning plate is provided with a groove, and the support rod is located in the inner cavity of the groove.

Preferably, the front sides of the bottom ends of the two supporting blocks are connected with a cross rod, the supporting rod is provided with a movable groove matched with the cross rod, and the supporting rod is movably connected with the cross rod.

Compared with the prior art, the utility model has the following beneficial effects:

1. this trace liquid titration outfit, through the setting of peristaltic pump, the work of peristaltic pump can accurate control enter into the liquid medicine volume in the syringe needle, the device can accurate control point appearance volume, has improved the accuracy of sample testing result, through the setting of lead screw, the rotation of lead screw can make threaded connection's the thread plate change in vertical ascending position of side with it, the thread plate drives the locating plate and removes, the distance between locating plate and the syringe needle changes, the sample application of being convenient for.

2. This trace liquid titration outfit uses through the cooperation of step motor, screw rod and thread bush isotructure, and step motor's rotation can drive the gear rotation of being connected with it, and the gear drives the screw rod through the ring gear with it meshing and rotates, and the rotation of screw rod can make the thread bush remove at the direction at screw rod place, and the thread bush drives the syringe needle and removes, and the position of syringe needle can change, and the device can be quick change the position of syringe needle, improves the efficiency of sample application.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a rear view of the present invention shown in FIG. 1;

FIG. 3 is an exploded view of the present invention shown in FIG. 1;

fig. 4 is an enlarged schematic view of the thread bush of the structure of the utility model.

In the figure: 1. a support block; 2. a screw; 3. a toothed ring; 4. a gear; 5. a stepping motor; 6. a peristaltic pump; 7. a cross bar; 8. a hose; 9. a connecting pipe; 10. a threaded sleeve; 11. a support bar; 12. a needle head; 13. a reflection block; 14. positioning a plate; 15. a slide bar; 16. a signal transmitting receiver; 17. a sliding sleeve; 18. a screw rod; 20. a thread plate; 21. a support rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, a micro-liquid titration device comprises two support blocks 1, a screw rod 2, a stepping motor 5, a peristaltic pump 6 and a positioning plate 14, wherein one side of the top ends of the two support blocks 1 is provided with a movable hole, two ends of the screw rod 2 are movably connected with the inner cavity of the movable hole, the outer ring of one end of the screw rod 2 is connected with a toothed ring 3, the other end of the top end of one support block 1 is fixedly sleeved with the stepping motor 5, the tail end of an output shaft of the stepping motor 5 is connected with a gear 4, the other end of the gear 4 is movably connected with the support block 1 through a connecting rod, the gear 4 is meshed with the toothed ring 3, the rotation of the stepping motor 5 can drive the gear 4 connected with the gear to rotate, the gear 4 drives the screw rod 2 to rotate through the toothed ring 3 meshed with the gear 4, the outer ring of the screw rod 2 is connected with a threaded sleeve 10 in a threaded manner, and the middle part of the top of the threaded sleeve 10 is connected with a connecting pipe 9, the middle part of the bottom of the threaded sleeve 10 is provided with a sliding chute, the inner sides of the top ends of the two supporting blocks 1 are connected with a sliding rod 15, the sliding rod 15 is movably connected with an inner cavity of the sliding chute, the sliding rod 15 can limit the moving direction of the threaded sleeve 10 to enable the threaded sleeve 10 to only move horizontally, the middle part of the front side of the screw rod 2 is connected with a supporting rod 11, an inner cavity of the other end of the supporting rod 11 is clamped with a needle head 12, the needle head 12 is connected with one end of a connecting pipe 9, the threaded sleeve 10 can move in the direction of the screw rod 2 through the rotation of the screw rod 2, the thread sleeve 10 drives the needle head 12 to move, the position of the needle head 12 can be changed, the middle parts of the front sides of the two supporting blocks 1 are movably connected with a screw rod 18, the outer ring of the screw rod 18 is in threaded connection with a threaded plate 20, the positioning plate 14 is movably connected with the threaded plate 20 through the arrangement of the screw rod 18, the rotation of the screw rod 18 can change the position of the threaded plate 20 in the vertical direction, threaded plate 20 drives locating plate 14 and removes, distance between locating plate 14 and the syringe needle 12 changes, the sample application of being convenient for, the rear side of two supporting shoe 1 is equipped with peristaltic pump 6, peristaltic pump 6 passes through the hose 8 and is connected with the other end of connecting pipe 9, the both ends at locating plate 14 top all are connected with sliding sleeve 17, threaded plate 20 and sliding sleeve 17's inner chamber swing joint, through the setting of peristaltic pump 6, control point appearance volume that can be accurate, improve the accuracy of testing result.

Referring to fig. 3 and 4, a signal transceiver 16 is embedded in the middle of the bottom of the supporting rod 11, a signal reflection block 13 is disposed at the bottom of the positioning plate 14 through a supporting rod 21, the signal transceiver 16 is used in cooperation with the signal reflection block 13, a control system in the device can control the working state of the stepping motor 5, and the device is convenient to use, the signal transceiver 16 is located right above the signal reflection block 13, a groove is disposed at the middle of the bottom of the positioning plate 14, the supporting rod 21 is located in an inner cavity of the groove, the front sides of the bottom ends of the two supporting blocks 1 are connected with a cross rod 7, a movable groove adapted to the cross rod 7 is disposed on the supporting rod 21, the supporting rod 21 is movably connected with the cross rod 7, and the longitudinal position of the signal reflection block 13 is unchanged and the horizontal position can be changed through the arrangement of the cross rod 7 and the supporting rod 21.

The working principle is as follows: when the device is used, a user adjusts the height and the position of the positioning plate 14 according to requirements, a glass slide for placing a sample is placed on the positioning plate 14, the reflecting block 13 is positioned at the rear side of the glass slide, the other end of the hose 8 is placed in a sample bottle, the peristaltic pump 6 is started, the working of the peristaltic pump 6 can enable liquid medicine in the sample bottle to drip on the glass slide below the glass slide from the needle head 12, the sample amount of the liquid medicine can be accurately controlled, when the position of the needle head 12 needs to be changed, the stepping motor 5 is started, the rotation of the stepping motor 5 can drive the gear 4 connected with the stepping motor to rotate, the gear 4 drives the screw rod 2 to rotate through the toothed ring 3 meshed with the gear 4, the screw rod 2 drives the threaded sleeve 10 to horizontally move, when the signal transmitting receiver 16 moves to the upper part of the reflecting block 13, the signal transmitting receiver 16 receives a signal sent by the signal transmitting receiver again, at the moment, a control system in the device controls the stepping motor 5 to stop rotating, the needle 12 is moved over the slide and the sample can be printed using the device.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a micro-liquid titration outfit, includes two supporting shoe (1), screw rod (2), step motor (5), peristaltic pump (6) and locating plate (14), its characterized in that: one side of the top ends of the two supporting blocks (1) is provided with a movable hole, the two ends of the screw rod (2) are movably connected with an inner cavity of the movable hole, the outer ring of the screw rod (2) is connected with a threaded sleeve (10) in a threaded manner, the middle of the top of the threaded sleeve (10) is connected with a connecting pipe (9), the middle of the bottom of the threaded sleeve (10) is provided with a sliding chute, the inner sides of the top ends of the two supporting blocks (1) are connected with a sliding rod (15), the sliding rod (15) is movably connected with the inner cavity of the sliding chute, the middle of the front side of the screw rod (2) is connected with a supporting rod (11), the inner cavity of the other end of the supporting rod (11) is clamped with a needle head (12), the needle head (12) is connected with one end of the connecting pipe (9), the middle of the bottom of the supporting rod (11) is embedded with a signal transmitter-receiver (16), and the middle of the front sides of the two supporting blocks (1) is movably connected with a screw rod (18), the outer ring of the screw rod (18) is in threaded connection with a threaded plate (20), the positioning plate (14) is movably connected with the threaded plate (20), the bottom of the positioning plate (14) is provided with a signal reflection block (13) through a support rod (21), the rear sides of the two support blocks (1) are provided with peristaltic pumps (6), and the peristaltic pumps (6) are connected with the other ends of the connecting pipes (9) through hoses (8).

2. A micro liquid titration device according to claim 1, wherein: the outer ring of screw rod (2) one end is connected with ring gear (3), one the other end fixed cover on supporting shoe (1) top has connect step motor (5), the output shaft end-to-end connection of step motor (5) has gear (4), the other end of gear (4) passes through connecting rod and supporting shoe (1) swing joint, gear (4) and ring gear (3) meshing.

3. A micro liquid titration device according to claim 1, wherein: the signal transmitting and receiving device (16) is positioned right above the signal reflecting block (13).

4. A micro liquid titration device according to claim 1, wherein: the two ends of the top of the positioning plate (14) are both connected with a sliding sleeve (17), the threaded plate (20) is movably connected with the inner cavity of the sliding sleeve (17), a groove is formed in the middle of the bottom of the positioning plate (14), and the support rod (21) is located in the inner cavity of the groove.

5. A micro liquid titration device according to claim 1, wherein: the front side of two supporting shoe (1) bottom is connected with horizontal pole (7), be equipped with the activity groove with horizontal pole (7) adaptation on branch (21), branch (21) and horizontal pole (7) swing joint.