CN220277019U - Multi-channel accurate liquid adding device - Google Patents

Abstract

The utility model relates to the technical field of liquid filling, in particular to a multichannel accurate liquid filling device, which comprises a supporting frame and a guide rail fixedly arranged in the supporting frame, wherein a bearing disc with a sliding block at the bottom is arranged above the guide rail and is arranged on the guide rail in a sliding way through the sliding block; the left side and the right side of the bearing plate are provided with a pair of positioning mechanisms for positioning the loading frame so that the cylindrical groove is aligned with the liquid adding needle tube. After the loading frame is placed, the loading frame is positioned through the positioning mechanism, so that when the loading frame moves to the lower part of the liquid adding needle tube, the mouth of the tube of the test tube is accurately aligned with the liquid adding needle tube, the liquid adding effect is further improved, and the situation that the liquid adding needle tube cannot accurately fill the culture solution into the test tube is avoided.

Description

Multi-channel accurate liquid adding device

Technical Field

The utility model relates to the technical field of liquid filling, in particular to a multichannel accurate liquid filling device.

Background

The culture solution is artificially prepared nutrient for the growth and maintenance of microorganisms, plants and animal tissues, and generally contains carbohydrate, nitrogenous substances, inorganic salts (including trace elements), vitamins, water and the like; when the culture solution is used, the culture solution is firstly added into a container such as a test tube, a centrifuge tube or a culture dish, and then various experiments are carried out, wherein in order to improve the sample adding efficiency of the culture solution, special equipment is used for liquid sample adding, and the existing liquid sample adding device is as follows:

chinese patent document publication No. CN103252264a discloses a multichannel liquid sampler, specifically: including support body, elevating platform and application of sample device, the support body includes bottom plate and a pair of support column of symmetrical setting on the bottom plate, and a pair of support column passes the hole of seting up on the elevating platform respectively, makes the elevating platform reciprocate along the support column to fix on the support column through the lift locking knob that sets up on the elevating platform, application of sample device includes hopper-shaped reservoir, and the pouring T type flowing back passageway of top intercommunication reservoir binding off end, is provided with the weeping switch on the reservoir, is close to its binding off end department, is provided with several application of sample needle in pouring T type flowing back passageway bottom, and every application of sample needle passes the elevating platform is fixed on the elevating platform, can realize liquid sample multichannel simultaneously application of sample, labour saving and time saving reduces the error and reduces the error probability, and is particularly suitable for the liquid application of sample of centrifuging tube.

From the above, the existing liquid sample injector comprises a plurality of sample injection needles fixedly arranged on a lifting platform, the lifting platform drives the sample injection needles to move up and down, the sample injection needles and a funnel-shaped liquid storage tank for storing liquid are communicated and arranged through an inverted T-shaped liquid discharge channel, and the sample injection needles are downwards moved and then placed in a centrifuge tube so as to inject liquid into the centrifuge tube. However, this liquid sampler cannot achieve automatic loading, makes loading inefficient, and is inconvenient in aligning the nozzle of the centrifuge tube with the loading needle when the centrifuge tube or centrifuge tube rack is placed. Therefore, a multi-channel accurate liquid feeding device is provided to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a multichannel accurate liquid adding device aiming at the defects of the prior art, so as to solve the technical problems that automatic sample adding cannot be realized, the tube orifice of a centrifuge tube is inconvenient to align to a sample adding needle and the like.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the multichannel accurate liquid feeding device comprises a supporting frame and a guide rail fixedly arranged in the supporting frame, wherein a bearing disc provided with a sliding block at the bottom is arranged above the guide rail and is arranged on the guide rail in a sliding manner through the sliding block, a loading frame and a liquid storage frame which are arranged front and back are arranged on the bearing disc, and a plurality of cylindrical grooves for storing test tubes are formed in the loading frame;

a plurality of liquid adding needle tubes arranged above the liquid storage frame and a lifting mechanism for driving the liquid adding needle tubes to move up and down are arranged in the supporting frame; the left side and the right side of the bearing plate are provided with a pair of positioning mechanisms for positioning the loading frame so that the cylindrical groove is aligned with the liquid adding needle tube.

Further, an electric push rod is arranged on the guide rail with the cavity inside, the telescopic rod of the electric push rod is arranged in the cavity, and the sliding block part is arranged in the cavity of the guide rail and fixedly arranged at the end part of the telescopic rod.

Further, grooves are formed in the left side edge and the right side edge of the liquid storage frame and the loading frame, so that the liquid storage frame and the loading frame can be taken conveniently.

Further, the number and mutual spacing of the liquid adding needle tubes are consistent with those of the placing grooves on the loading frame.

Further, elevating system is including arranging in the carriage of stock solution frame top and a pair of drive assembly that is used for driving the carriage to reciprocate, still including the mounting panel of fixing a plurality of liquid feeding needle tubing on the carriage.

Further, the driving assembly comprises a fixing plate fixedly arranged on the supporting frame, a stepping motor is arranged on the fixing plate, and a screw rod in threaded connection with the sliding frame is fixedly arranged on an output shaft of the stepping motor.

Further, a supporting plate for supporting the screw rod is arranged on the fixing plate.

Further, the positioning mechanism comprises a fixed block fixedly arranged on the bearing plate and a rotating rod with one end rotatably arranged on the fixed block, an embedded block with the shape consistent with that of the groove is fixedly arranged on the other end of the rotating rod, and the embedded block is arranged on one side of the rotating rod close to the loading frame; the bull stick is kept away from and is equipped with the lug on the fixed one side of loading the frame, and is equipped with the through-hole that the opening was up on the lug, and it is equipped with a pair of slide rail to fix on the loading tray side, is equipped with the gag lever post on the slide rail slidingly, and in the through-hole of inserting the lug was worn to gag lever post one end to fix the bull stick.

The utility model has the beneficial effects that:

1. when the automatic liquid feeding device is used, the lifting mechanism is started to drive the liquid feeding needle tubes to move downwards, the liquid feeding needle tubes are moved into the liquid storage frame to absorb the culture solution in the liquid storage frame, after a certain amount of culture solution is absorbed, the lifting mechanism drives the liquid feeding needle tubes to move upwards to the initial position, then the electric push rod is started, the bearing plate is pulled to slide on the guide rail, so that the loading frame carrying the test tubes on the bearing plate is pulled to the lower part of the liquid feeding needle tubes, and the tube orifices of the test tubes are aligned with the liquid feeding needle tubes; starting elevating system again drives the liquid feeding needle tubing that has inhaled the culture solution and moves down, makes the liquid feeding needle tubing remove to inside the test tube, and then annotates the culture solution to the test tube in, realizes automatic accurate liquid feeding to the test tube, has improved liquid feeding efficiency.

2. In order to enable the tube opening of the test tube on the loading frame to be aligned with the liquid adding needle tube, a positioning mechanism for positioning the loading frame is further arranged on the bearing disc, the loading frame is placed on the bearing disc in a removable mode, after the loading frame is placed, the loading frame is positioned through the positioning mechanism, so that the tube opening of the test tube is accurately aligned with the liquid adding needle tube when the loading frame moves to the lower portion of the liquid adding needle tube, the liquid adding effect is further improved, and the situation that the liquid adding needle tube cannot accurately fill culture liquid into the test tube is avoided.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic view of a partial perspective structure of the present utility model.

Fig. 3 is a schematic view of the internal structure of the guide rail of the present utility model.

Fig. 4 is a schematic structural view of the lifting mechanism of the present utility model.

Fig. 5 is a schematic structural view of the positioning mechanism of the present utility model.

Fig. 6 is a schematic view of a part of the positioning mechanism of the present utility model.

The reference numerals include:

1. a support frame; 101. a support leg; 2. a guide rail; 3. a carrying tray; 4. a slide block; 5. an electric push rod; 6. a liquid storage frame; 7. a loading frame; 701. a groove; 8. a lifting mechanism; 801. a fixing plate; 802. a support plate; 803. a stepping motor; 804. a screw rod; 805. a carriage; 806. a mounting plate; 807. a liquid adding needle tube; 9. a positioning mechanism; 901. a fixed block; 902. a rotating rod; 903. an insert; 904. a bump; 905. a slide rail; 906. and a limit rod.

Detailed Description

The following describes the multi-channel precise liquid feeding device in detail with reference to the accompanying drawings.

As shown in fig. 1-3, an embodiment of the multichannel accurate liquid adding device of the utility model comprises a supporting frame 1 and supporting legs 101 for supporting the supporting frame 1, wherein a guide rail 2 is arranged in the supporting frame 1, the guide rail 2 and the supporting frame 1 are fixedly arranged through a mounting plate, the liquid adding device also comprises a bearing plate 3 arranged above the guide rail 2, the bearing plate 3 is slidingly arranged on the guide rail 2 through a sliding block 4 fixedly arranged at the bottom of the bearing plate 3, and when the sliding block 4 is forced, the sliding block 4 slides back and forth on the guide rail 2, so that the bearing plate 3 slides back and forth together. Wherein, inside the cavity that is equipped with of guide rail 2 is equipped with electric putter 5 on the guide rail 2, and electric putter 5's telescopic link is arranged in the cavity in, and slider 4 part is arranged in the cavity of guide rail and is fixed the setting with telescopic link tip, and electric putter 5's telescopic link is the state of stretching out, and after electric putter 5 starts, the telescopic link contracts to pulling slider 4 and loading tray 3 moves backward, otherwise, when the telescopic link stretches out, then promote slider 4 and loading tray 3 and move forward, in order to realize loading tray 3 and slide forward and backward automatically.

In addition, a pair of front-back placement grooves are formed in the bearing plate 3, a detachable loading frame 7 is placed in the front placement groove, a plurality of cylindrical grooves for storing test tubes are formed in the loading frame 7, when the loading frame 7 is placed on the bearing plate 3, a plurality of test tubes are supported through the plurality of cylindrical grooves, liquid adding is carried out on the plurality of test tubes at the same time, after the liquid adding is finished, the loading frame 7 can be taken away, and therefore the plurality of test tubes are taken away at one time, and liquid adding efficiency is improved; in addition, a liquid storage frame 6 is placed in the placement groove at the rear side, the liquid storage frame 6 is used for storing culture solution, and the liquid storage frame 6 can be taken away from the bearing plate 3 as well, so that the culture solution in the liquid storage frame 6 can be supplemented. In order to enable better taking of the liquid storage frame 6 and the loading frame 7, grooves 701 are formed in the left side edge and the right side edge of the liquid storage frame 6 and the loading frame 7, and staff can conveniently take the liquid storage frame 6 and the loading frame 7 through the grooves 701.

A plurality of liquid adding needle tubes 807 arranged above the liquid storage frame 6 and a lifting mechanism 8 for driving the liquid adding needle tubes 807 to move up and down are also arranged in the supporting frame 1, wherein the number and the mutual distance of the liquid adding needle tubes 807 are consistent with those of the cylindrical grooves on the loading frame 7, the liquid adding needle tubes 807 are communicated with an air extracting device arranged at the periphery of the liquid adding device and used for generating suction force, the lifting mechanism 8 is started to drive the liquid adding needle tubes 807 to move downwards at the same time, the liquid adding needle tubes 807 are moved into the liquid storage frame 6, then the air extracting device at the periphery of the liquid adding device is started to enable the liquid adding needle tubes 807 to generate suction force, the culture liquid in the liquid storage frame 6 is sucked into the liquid adding needle tubes, and after a certain amount of culture liquid is sucked, the lifting mechanism 8 drives the liquid adding needle tubes 807 to move upwards to an initial position, so that the suction of the culture liquid is completed; the electric push rod 5 is restarted, the carrying disc 3 is pulled to slide backwards, so that the carrying frame 7 carrying a plurality of test tubes on the carrying disc 3 is pulled to the lower part of the liquid adding needle tube 807, the tube opening of the test tubes is aligned with the liquid adding needle tube 807, the lifting mechanism 8 is restarted, the liquid adding needle tube 807 sucking culture solution is driven to move downwards, the liquid adding needle tube 807 is driven to move into the test tubes, the air extractor on the periphery of the liquid adding device is restarted, the liquid adding needle tube 807 generates repulsive force, the culture solution is further filled into the test tubes, automatic accurate liquid adding to the test tubes is realized, and the liquid adding efficiency is improved. In order to align the tube opening of the test tube on the loading frame 7 with the liquid adding needle tube 807, a pair of positioning mechanisms 9 for positioning the loading frame 7 are arranged on the left side and the right side of the loading disc 3, and after the loading frame 7 is placed on the loading disc 3, the positioning mechanism 9 is used for positioning, so that when the loading frame 7 moves to the position below the liquid adding needle tube 807, the tube opening of the test tube is accurately aligned with the liquid adding needle tube 807, the liquid adding effect is further improved, and the situation that the liquid adding needle tube 807 cannot accurately fill the culture liquid into the test tube is avoided.

As shown in FIG. 4, the lifting mechanism 8 comprises a carriage 805 disposed above the liquid storage frame 6 and a pair of driving units for driving the carriage 805 to move up and down, and further comprises a mounting plate 806 for fixing a plurality of liquid charging needle tubes 807 to the carriage 805, and when the driving units drive the carriage 805 to move up and down, the carriage 805 carries the plurality of liquid charging needle tubes 807 to move up and down simultaneously to drive the liquid charging needle tubes 807 to a designated position for liquid suction and liquid charging. The driving assembly comprises a fixing plate 801 fixedly arranged on the supporting frame 1, a stepping motor 803 is arranged on the fixing plate 801, a screw rod 804 in threaded connection with a sliding frame 805 is fixedly arranged on an output shaft of the stepping motor 803, when the stepping motor 803 is started, the screw rod 804 is driven to rotate, and the sliding frame 805 can be driven to move up and down by rotating the screw rod 804, so that the liquid adding needle tube 807 can automatically move up and down; and in order to increase the stability of the rotation of the screw 804, a support plate 802 for supporting the screw 804 is installed on the fixing plate 801, so that the screw 804 is rotationally more stable through the support plate 802.

As shown in fig. 5-6, the positioning mechanism 9 comprises a fixed block 901 fixedly arranged on the carrying disc 3 and a rotating rod 902 with one end rotatably arranged on the fixed block 901, wherein an embedded block 903 with the shape consistent with that of the groove 701 is fixedly arranged on the other end of the rotating rod 902, the embedded block 903 is arranged on one side of the rotating rod 902 close to the loading frame 7, after the embedded block 903 is embedded into the groove 701, the loading frame 7 can be positioned, so that when the loading frame 7 moves to the position below the liquid adding needle tube 807, the mouth of the test tube is accurately aligned with the liquid adding needle tube 807. In order to prevent the insert 903 from being separated from the groove 701, a protruding block 904 is fixedly arranged on one side of the rotating rod 902 away from the loading frame 7, and a through hole with an upward opening is arranged on the protruding block 904, wherein a pair of sliding rails 905 are fixedly arranged on the side edge of the loading disc 3, a limiting rod 906 is slidingly arranged on the sliding rails 905, and one end of the limiting rod 906 is inserted into the through hole of the protruding block 904 to fix the rotating rod 902, so that the rotating rod 902 is prevented from rotating, and the insert 903 is separated from the groove 701. When the loading frame 7 needs to be removed from the carrying disc 3, a downward force is applied to the limit rod 906 to enable the limit rod 906 to slide downwards on the slide rail 905, the end portion of the limit rod 906 is separated from the through hole of the protruding block 904, after separation, the rotating rod 902 can be rotated to enable the insert 903 to be separated from the groove 701, and then the loading frame 7 is removed.

The specific working principle is as follows: when liquid adding is needed, a stepping motor 803 is started to drive a screw rod 804 to rotate, the screw rod 804 rotates to drive a sliding frame 805 to move up and down, the sliding frame 805 moves down with a plurality of liquid adding needle tubes 807 at the same time, the liquid adding needle tubes 807 move into a liquid storage frame 6, then an air extractor at the periphery of the liquid adding device is started to enable the liquid adding needle tubes 807 to generate suction force, culture liquid in the liquid storage frame 6 is sucked into the liquid adding needle tubes, after a certain amount of culture liquid is sucked, the stepping motor 803 drives the screw rod 804 to rotate reversely, so that the sliding frame 805 moves up to an initial position with the liquid adding needle tubes 807, and the suction of the culture liquid is completed; the electric push rod 5 is started again, the carrying disc 3 is pulled to slide backwards, so that the carrying frame 7 carrying a plurality of test tubes on the carrying disc 3 is pulled to the lower side of the liquid adding needle tube 807, the mouth of the test tubes is aligned with the liquid adding needle tube 807, the stepping motor 803 is started again, the sliding frame 805 drives the liquid adding needle tube 807 sucking the culture solution to move downwards, the liquid adding needle tube 807 moves to the inside of the test tube, the air extractor on the periphery of the liquid adding device is started again, repulsive force is generated by the liquid adding needle tube 807, the culture solution is added into the test tube, and the automatic accurate liquid adding to the test tube is realized. After the liquid adding is completed, a downward force is applied to the limiting rod 906, so that the limiting rod 906 slides downwards on the sliding rail 905, the end part of the limiting rod 906 is separated from the through hole of the protruding block 904, and after the separation, the rotating rod 902 can be rotated, so that the insert 903 is separated from the groove 701, and the loading frame 7 can be taken away.

In view of the above, the present utility model has the above-mentioned excellent characteristics, so that it can be used to improve the performance and practicality of the prior art, and is a product with great practical value.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims (8)

1. The utility model provides an accurate liquid feeding device of multichannel which characterized in that: the test tube storage device comprises a supporting frame (1) and a guide rail (2) fixedly arranged in the supporting frame (1), wherein a bearing disc (3) with a sliding block (4) at the bottom is arranged above the guide rail (2) and is arranged on the guide rail (2) in a sliding manner through the sliding block (4), a loading frame (7) and a liquid storage frame (6) which are arranged front and back are arranged on the bearing disc (3), and a plurality of cylindrical grooves for storing test tubes are formed in the loading frame (7);

a plurality of liquid adding needle tubes (807) arranged above the liquid storage frame (6) and a lifting mechanism (8) for driving the liquid adding needle tubes (807) to move up and down are arranged in the supporting frame (1); the left side and the right side of the bearing disc (3) are provided with a pair of positioning mechanisms (9) for positioning the loading frame (7) so that the cylindrical groove is aligned with the liquid adding needle tube (807).

2. The multi-channel precise liquid adding device according to claim 1, wherein: an electric push rod (5) is arranged on the guide rail (2) with a cavity inside, a telescopic rod of the electric push rod (5) is arranged in the cavity, and a sliding block (4) is partially arranged in the cavity of the guide rail and fixedly arranged at the end part of the telescopic rod.

3. The multi-channel precise liquid adding device according to claim 1, wherein: grooves (701) are formed in the left side and the right side of the liquid storage frame (6) and the loading frame (7) so as to facilitate taking the liquid storage frame (6) and the loading frame (7).

4. The multi-channel precise liquid adding device according to claim 1, wherein: the number and mutual spacing of the filling needles (807) corresponds to the placement grooves on the loading frame (7).

5. The multi-channel precise liquid adding device according to claim 1, wherein: the lifting mechanism (8) comprises a sliding frame (805) arranged above the liquid storage frame (6), a pair of driving components for driving the sliding frame (805) to move up and down, and a mounting plate (806) for fixing a plurality of liquid adding needle tubes (807) on the sliding frame (805).

6. The multi-channel precision liquid adding device according to claim 5, wherein: the driving assembly comprises a fixing plate (801) fixedly arranged on the supporting frame (1), a stepping motor (803) is arranged on the fixing plate (801), and a screw rod (804) in threaded connection with a sliding frame (805) is fixedly arranged on an output shaft of the stepping motor (803).

7. The multi-channel precision liquid adding device according to claim 6, wherein: the fixing plate (801) is provided with a supporting plate (802) for supporting the screw rod (804).

8. The multi-channel precise liquid adding device according to claim 1, wherein: the positioning mechanism (9) comprises a fixed block (901) fixedly arranged on the bearing disc (3) and a rotating rod (902) with one end rotatably arranged on the fixed block (901), an embedded block (903) with the shape consistent with that of the groove (701) is fixedly arranged on the other end of the rotating rod (902), and the embedded block (903) is arranged on one side of the rotating rod (902) close to the loading frame (7); a protruding block (904) is fixedly arranged on one side, far away from the loading frame (7), of the rotating rod (902), through holes with upward openings are formed in the protruding block (904), a pair of sliding rails (905) are fixedly arranged on the side edges of the bearing disc (3), a limiting rod (906) is slidably arranged on the sliding rails (905), and one end of the limiting rod (906) is inserted into the through holes of the protruding block (904) in an penetrating mode so as to fix the rotating rod (902).