CN217056433U - Non-contact liquid pipeline reversing device - Google Patents

Abstract

The utility model discloses a contactless liquid pipeline switching-over device, including the tee bend, the steering gear, the connecting pipe, pipette and feed pipe communicate with three-way three interface respectively, pipette and feed pipe are the hose, the steering gear includes the fixed block, pressing rod, rotary driving piece and two spacing quiet pieces, two spacing quiet pieces are fixed with the fixed block, pressing rod sets up between two spacing quiet pieces, pressing rod rotates with the fixed block to be connected, rotary driving piece drive pressing rod rotates, pressing rod's both ends are towards two spacing quiet pieces respectively, pipette and feed pipe pass two spacing quiet pieces respectively and compress tightly the clearance between the pole both ends. The utility model provides a contactless liquid pipeline switching-over device can realize contactless liquid pipeline and switch over, and simple structure, and a drive action can realize pressing from both sides the pipe and loosen the pipe.

Description

Contactless liquid pipeline reversing device

Technical Field

The utility model belongs to the technical field of liquid pipeline switching-over device technique and specifically relates to a contactless liquid pipeline switching-over device is related to.

Background

Liquid filling and liquid conveying in a laboratory need to switch the conveying direction of liquid, and a common switching valve is generally adopted to switch the flow direction of liquid. The former switching mode needs liquid to pass through and contact the valve body, but some liquids such as sterile liquid medicine, highly corrosive liquid and the like require that the liquid can not contact the valve body, so that a non-contact liquid reversing device is needed to realize the switching mode.

Chinese patent application publication No. CN203036258U, published as 2013, 07/03, entitled "liquid conveying and reversing device", discloses a liquid conveying and reversing device, which comprises a pressurizing and filtering device, a container box type device, a liquid medium replacing box, and a waste liquid medium collecting box, and realizes the conversion of functions of discharging and injecting liquid medium through the connection of a tee joint and a valve pipe fitting. But the reversing device is still in a contact type and does not meet the requirement.

Disclosure of Invention

The utility model discloses a satisfy the demand that liquid can not contact the switching-over device, provide a contactless liquid pipeline switching-over device, can realize that contactless liquid pipeline switches over, and simple structure, a drive action can realize pressing from both sides pipe and pine pipe.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a contactless liquid pipeline switching-over device, including the tee bend, the steering gear, the connecting pipe, pipette and feed pipe communicate with three interface of tee bend respectively, pipette and feed pipe are the hose, the steering gear includes the fixed block, compressing tightly the pole, rotary driving piece and two spacing quiet pieces, two spacing quiet pieces are fixed with the fixed block, compressing tightly the pole setting between two spacing quiet pieces, compressing tightly the pole and rotating with the fixed block and be connected, rotary driving piece drive compressing tightly pole rotates, compressing tightly the both ends of pole are towards two spacing quiet pieces respectively, pipette and feed pipe pass two spacing quiet pieces respectively and compress tightly the clearance between the pole both ends.

Among the above-mentioned technical scheme, through rotatory compressing tightly the pole, can adjust the break-make of pipette and feed pipe, realize contactless liquid pipeline and switch, and simple structure, a drive action can realize pressing from both sides the pipe and loosen the pipe. The rotary driving piece can be a motor, a rotary cylinder and the like which can realize the driving device of the rotary driving.

Preferably, the limiting static block is provided with an arc-shaped groove, and the distance from the side wall of the arc-shaped groove to the rotating center of the pressing rod is gradually increased from one side to the other side. The pressing lever is at any position, and at least one of the pipette and the liquid supply tube is pressed and closed. The clearance between the end part of the compressing rod and the limiting static block can be changed by rotating the compressing rod, so that the compressing, closing and loosening of the hose are realized.

Preferably, the end part of the pressing rod is provided with a pressing roller, the pressing roller is rotatably connected with the pressing rod, and the pressing roller is in contact with the liquid suction pipe or the liquid supply pipe. The compressing roller can compress the hose tightly and seal, also can reduce friction loss, simultaneously, can be through the size of changing compressing roller, the not unidimensional hose of adaptation.

Preferably, the end part of the pressing rod is provided with a limiting moving block, the limiting moving block is provided with a limiting groove for limiting the movement of the hose along the axial direction of the pressing rod, and the connecting pipe or the pipette is positioned in the limiting groove. The position of the hose can be limited by the limiting moving block, so that the hose is always positioned in the limiting groove, and the hose is prevented from being crushed.

Preferably, the device further comprises a syringe which is communicated with the connecting pipe. The syringe can be used for storing liquid and carrying out quantitative control on the liquid. And opening the liquid suction pipe through the diverter, closing the liquid supply pipe, enabling the liquid to enter the injector, then closing the liquid suction pipe through the diverter, opening the liquid supply pipe, and conveying the liquid from the liquid supply pipe into the experimental container through the injector.

Preferably, the device further comprises a driver, and the driver drives the piston of the injector to move. The structure can realize automatic transfusion.

Preferably, the driver is a speed-reducing stepping motor. The speed reduction stepping motor can enable the quantitative control of the injector to be more accurate.

Preferably, the liquid storage bottle is further included and is communicated with the tee joint through a liquid suction pipe.

Preferably, the injector, the tee joint and the diverter are arranged from top to bottom in sequence.

The utility model has the advantages that: (1) realizing the non-contact liquid pipeline switching; (2) the structure is simple, and one driving action can realize pipe clamping and pipe loosening; (3) the hose clamp can be adapted to hoses with different sizes by changing the size of the pressing roller; (4) the position of the hose can be limited by the limiting moving block, so that the hose is always positioned in the limiting groove, and the hose is prevented from being crushed.

Drawings

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

FIG. 2 is a first schematic view of the diverter;

fig. 3 is a second structural schematic of the diverter.

In the figure: syringe 1, driver 2, tee bend 3, steering gear 4, fixed block 4.1, compress tightly pole 4.2, rotary driving piece 4.3, spacing quiet piece 4.4, arc wall 4.5, compress tightly gyro wheel 4.6, spacing movable block 4.7, spacing groove 4.8, connecting pipe 5, pipette 6, feed tube 7, stock solution bottle 8.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Example 1:

as shown in fig. 1, a non-contact liquid pipeline reversing device includes an injector 1, a driver 2, a tee joint 3, a steering gear 4, a connecting pipe 5, a liquid suction pipe 6, a liquid supply pipe 7 and a liquid storage bottle 8, the driver 2 is a speed reduction stepping motor, the driver 2 drives a piston of the injector 1 to move, and the injector 1 is communicated with the connecting pipe 5. The connecting pipe 5, the pipette 6 and the liquid supply pipe 7 are respectively communicated with three interfaces of the tee joint 3, the pipette 6 and the liquid supply pipe 7 are hoses, the liquid storage bottle 8 is communicated with the tee joint 3 through the pipette 6, and the injector 1, the tee joint 3 and the steering gear 4 are sequentially arranged from top to bottom.

As shown in fig. 2 and fig. 3, the steering gear 4 includes a fixed block 4.1, a pressing rod 4.2, a rotary driving member 4.3 and two limit static blocks 4.4, the two limit static blocks 4.4 are fixed with the fixed block 4.1, the pressing rod 4.2 is disposed between the two limit static blocks 4.4, the pressing rod 4.2 is rotatably connected with the fixed block 4.1, the rotary driving member 4.3 drives the pressing rod 4.2 to rotate, two ends of the pressing rod 4.2 face the two limit static blocks 4.4 respectively, and the liquid suction pipe 6 and the liquid supply pipe 7 penetrate through a gap between the two limit static blocks 4.4 and two ends of the pressing rod 4.2 respectively. The limiting static block 4.4 is provided with an arc-shaped groove 4.5, and the distance from the side wall of the arc-shaped groove 4.5 to the rotation center of the pressing rod 4.2 is gradually increased from one side to the other side. The end part of the pressing rod 4.2 is provided with a pressing roller 4.6, the pressing roller 4.6 is rotatably connected with the pressing rod 4.2, and the pressing roller 4.6 is in contact with one of the liquid suction pipe 6 and the liquid supply pipe 7. The tip that compresses tightly pole 4.2 is equipped with spacing movable block 4.7, is equipped with the spacing groove 4.8 that the restriction hose removed along compressing tightly 4.2 axis directions on the spacing movable block 4.7, and connecting pipe 5 or pipette 6 are located the spacing groove 4.8.

Among the above-mentioned technical scheme, through rotatory pressing rod 4.2, can adjust the break-make of pipette 6 and feed pipe 7, realize contactless liquid pipeline and switch, and simple structure, a drive action can realize pressing from both sides the pipe and loosen the pipe. The rotary driving piece 4.3 can be a motor, a rotary cylinder and other driving devices capable of realizing rotary driving. The pressing bar 4.2 is in any position and at least one of the pipette 6 and the supply tube 7 is pressed closed. The gap between the end part of the compressing rod 4.2 and the limiting static block 4.4 can be changed by rotating the compressing rod 4.2, so that the compression of the hose is closed and the passage is loosened. Opening the pipette 6 by the diverter 4, closing the supply tube 7 to allow the liquid to enter the syringe 1, closing the pipette 6 by the diverter 4, opening the supply tube 7, and transferring the liquid from the supply tube 7 to the test vessel by the syringe 1

The utility model has the advantages that: (1) realizing the non-contact liquid pipeline switching; (2) the structure is simple, and one driving action can realize pipe clamping and pipe loosening; (3) the hose clamp can be adapted to hoses with different sizes by changing the size of the pressing roller 4.6; (4) the position of the hose can be limited by the limiting moving block 4.7, so that the hose is always positioned in the limiting groove 4.8, and the hose is prevented from being crushed.

Claims (9)

1. The utility model provides a contactless liquid pipeline switching-over device, which is characterized by, including the tee bend, the steering gear, the connecting pipe, pipette and feed pipe communicate with three interface of tee bend respectively, pipette and feed pipe are the hose, the steering gear includes the fixed block, compress tightly the pole, rotary driving piece and two spacing statics, two spacing statics are fixed with the fixed block, compress tightly the pole setting between two spacing statics, compress tightly the pole and rotate with the fixed block and be connected, rotary driving piece drive compressing tightly pole rotates, compress tightly the both ends of pole and move towards two spacing statics respectively, pipette and feed pipe pass two spacing statics respectively and compress tightly the clearance between the pole both ends.

2. The contactless liquid pipeline reversing device according to claim 1, wherein the limiting static block is provided with an arc-shaped groove, and the distance from the side wall of the arc-shaped groove to the rotation center of the pressing rod is gradually increased from one side to the other side.

3. The device for reversing liquid pipelines according to claim 1, wherein the pressing roller is arranged at the end part of the pressing rod, the pressing roller is rotatably connected with the pressing rod, and the pressing roller is contacted with the liquid suction pipe or the liquid supply pipe.

4. The device for reversing liquid pipelines in a non-contact manner according to claim 1, wherein a limiting moving block is arranged at the end part of the pressing rod, a limiting groove for limiting the movement of the hose along the axial direction of the pressing rod is formed in the limiting moving block, and the connecting pipe or the liquid suction pipe is positioned in the limiting groove.

5. A fluid line reversing device in a non-contact manner according to claim 1, 2, 3 or 4, and further comprising an injector, wherein the injector is communicated with the connecting tube.

6. The device of claim 5, further comprising a driver for moving the plunger of the syringe.

7. The apparatus as claimed in claim 6, wherein the driver is a step-down motor.

8. The device for reversing liquid pipelines according to claim 1, 2, 3 or 4, further comprising a liquid storage bottle, wherein the liquid storage bottle is communicated with the tee joint through a liquid suction pipe.

9. The device as claimed in claim 5, wherein the injector, the tee and the diverter are arranged in sequence from top to bottom.

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