Magnetic liquid dye quantitative dropping device based on photoelectric liquid level detection

Abstract

The utility model discloses a kind of magnetic liquid quantitative dropping device of dyeing liquid based on photoelectric liquid level detection, including pipe body, lead-in pipe, button, disposable straw, connecting plate, regulator;The pipe body is hollow structure, lead-in pipe one end is communicated with pipe body, and the other end is connected with disposable straw;Disposable straw is equipped with conical suction head, boss and the iron sheet fixed on the surface of boss, recess with magnetic material is formed on connecting pipe, straw is installed positioning by the adsorption relationship of iron sheet and magnetic suction material;Connecting plate is arranged on pipe body, and connecting plate is installed regulator, and regulator drives photoelectric transmitter and photoelectric receiver to change liquid level detection height along guide rail by moving;Suction structure is arranged in pipe body, and suction structure is composed of straight rod, spring, switch and suction valve, button and straight rod transmission cooperation, photoelectric receiver and suction valve circuit connection, when liquid level reaches set height, suction valve switches to closed state, realizes quantitative liquid suction.The device liquid suction is accurate, and it is suitable for precise sampling and dropping of dyeing liquid in experimental process.

Description

Technical Field

[0001] This utility model relates to the field of dropper technology, and more specifically to a magnetically suction-type quantitative dyeing liquid dropper based on photoelectric liquid level detection. Background Technology

[0002] During the experiment, the aspiration and addition of the dye solution usually rely on manual operation of pipettes or droppers. However, existing devices generally have problems such as cumbersome operation, inaccurate liquid volume control, and reliance on experience for liquid level identification. Especially when micro-volume and quantitative operations are required, it is difficult to guarantee repeatability and stability.

[0003] The existing pipette, as shown in application number CN2476796Y, photoelectric automatic quantitative liquid pipette, uses a photoelectric liquid level sensor in conjunction with liquid addition control to achieve quantitative liquid addition. However, it does not provide an adjustable height setting mechanism, and the connection and installation structure is not specifically designed. The structural integration and ease of replacement are obviously insufficient. Utility Model Content

[0004] The purpose of this utility model is to provide a magnetic suction-type quantitative dyeing solution addition device based on photoelectric liquid level detection in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes a magnetic suction-type quantitative dripping device for dye liquor based on photoelectric liquid level detection, including a tube body, an inlet tube disposed at the bottom of the tube body, a button disposed at the top of the tube body, a disposable pipette installed at the end of the inlet tube, a connecting plate fixed to the outer wall of the tube body, an adjuster installed on the connecting plate, and a suspension block arranged at the end of the tube body. The tube body is a hollow structure. One end of the inlet tube is connected to the tube body, and the other end is used to insert into a container for the dye liquor to be drawn. The disposable pipette is detachably installed at one end of a connecting tube inside the inlet tube. The disposable pipette includes a conical suction head at one end, a protrusion formed on the outer wall of the pipette, and an iron sheet fixed on the surface of the protrusion. The connecting tube is provided with a groove made of magnetic material. The disposable pipette is held in the groove of the connecting tube by the mutual attraction between the iron sheet and the magnetic material. As a preferred technical solution of this utility model, the connecting plate is arranged along the axial direction of the pipe body, and the connecting plate is provided with an adjuster that can adjust the position of the photoelectric device on the guide rail, thereby changing the liquid level detection height; the photoelectric device includes a photoelectric transmitter and a photoelectric receiver arranged opposite to each other along the guide rail, the photoelectric receiver receives the light signal emitted by the photoelectric transmitter and interrupts the signal when the liquid level is reached to form a detection signal; The tube body is equipped with an air intake structure, which consists of a straight rod coaxial with the button, a spring sleeved on the outer periphery of the straight rod, a switch fixed to one end of the straight rod, and an air intake valve connected to the switch. The button is connected to the switch via the straight rod. The photoelectric receiver is connected to the control circuit of the air intake valve to control the air intake valve to switch to the closed state when the liquid level reaches the height of the photoelectric device.

[0006] As a preferred embodiment of this invention, the regulator controls the photoelectric device to move along the guide rail via operation buttons to set the liquid absorption volume.

[0007] As a preferred technical solution of this utility model, the suspension block is set at one end of the tube body and is used to suspend the entire device on the experimental table or support for easy operation and fixation.

[0008] The beneficial effects of this utility model are as follows: This invention, through the setting of a connecting plate and an adjuster, makes the photoelectric device adjustable on the guide rail, allowing for flexible setting of the liquid level detection height as needed, thereby achieving quantitative liquid aspiration; through the structural cooperation of the straight rod, spring, and suction valve, combined with the detection signal of the photoelectric device, the automatic shut-off of the liquid aspiration process is ensured, improving the liquid aspiration accuracy; through the combination of iron sheet and magnetic groove, the disposable pipette can be quickly installed and removed, avoiding cross-contamination; the overall structure of the device is compact, can be fixed to the experimental table by the suspension block, operates stably, and is suitable for widespread application in laboratory dye liquor processing. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the tube structure of this utility model; Figure 2 This is a schematic diagram of the air intake structure of this utility model; Figure 3 This is a schematic diagram of the inlet tube structure of this utility model; Figure 4 This is a schematic diagram of the disposable straw structure of this utility model.

[0010] Reference numerals: 1. Tube body; 2. Inlet tube; 3. Button; 4. Disposable straw; 5. Connecting plate; 6. Adjuster; 7. Suspension block; 21. Connecting tube; 22. Guide rail; 23. Photoelectric transmitter; 24. Photoelectric receiver; 25. Groove; 26. Magnetic material; 31. Spring; 32. Straight rod; 33. Switch; 34. Suction valve; 41. Conical suction head; 42. Protrusion; 43. Iron sheet. Detailed Implementation Example 1

[0011] like Figures 1 to 4As shown, this utility model proposes a magnetic suction type quantitative dripping device for dye liquor based on photoelectric liquid level detection, including a tube body 1, an inlet tube 2 set at the bottom of the tube body 1, a button 3 set at the top of the tube body 1, a disposable pipette 4 installed at the end of the inlet tube 2, a connecting plate 5 fixed to the outer wall of the tube body 1, an adjuster 6 slidably installed on the connecting plate 5, and a suspension block 7 arranged at the end of the tube body 1.

[0012] The tube body 1 is a hollow structure with an internal through cavity. One end of the inlet tube 2 is connected to the cavity, and the other end is inserted into the dye container. The disposable pipette 4 is installed at the end of the connecting tube 21 of the inlet tube 2. One end of the pipette has a conical suction head 41 and a protrusion 42 on its outer wall. An iron sheet 43 is fixed on the surface of the protrusion 42. The end of the connecting tube 21 has a groove 25. Magnetic material is embedded in the groove 25. The pipette is positioned in the groove 25 of the connecting tube 21 by the adsorption between the iron sheet 43 and the magnetic material. The connecting plate 5 is arranged along the axial direction of the tube body 1. A guide rail 22 is provided on the connecting plate 5, and the adjuster 6 can move along the guide rail 22. A photoelectric device is installed on the adjuster 6. The photoelectric device consists of a photoelectric transmitter 23 and a photoelectric receiver 24, which are arranged opposite each other on both sides of the guide rail 22. The installation position of the photoelectric device in the height direction can be changed by adjusting the position of the regulator 6, thereby setting the detection height of the liquid level. The tube body 1 is equipped with an air suction structure, which consists of a straight rod 32 coaxially arranged with the button 3, a spring 31 sleeved on the outer periphery of the straight rod 32, a switch 33 fixed to one end of the straight rod 32, and an air suction valve 34 connected to the switch 33. The button 3 and the straight rod 32 are driven together, and the straight rod 32 can reciprocate under the action of the spring 31 to drive the switch 33. The photoelectric receiver 24 is connected to the circuit of the air suction valve 34. When the photoelectric device detects that the liquid level has reached the preset height, the air suction valve 34 responds to the circuit signal and switches to the closed state. The suspension block 7 is set at one end of the tube body 1 and can be used with the experimental platform bracket to fix the entire device.

[0013] During use, the experimenter inserts a disposable pipette 4 into the container to be filled with dye solution. After pressing button 3, the rod 32 drives switch 33 to open the suction valve 34, allowing the liquid to enter the tube body 1 through the pipette and inlet tube 2. When the liquid level rises to the detection position of the photoelectric device, the photoelectric receiver 24 interrupts the signal and controls the suction valve 34 to close, completing the quantitative liquid filling. Pressing button 3 again switches the suction valve 34 to the exhaust state, and the filled dye solution is discharged, thus achieving precise dye solution addition. The control method of this utility model is controlled by manually starting and stopping the switch. The wiring diagram of the power component and the power supply are common knowledge in the field. Since this utility model is mainly used for precise liquid filling, the control method and wiring layout will not be explained in detail.

[0014] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0015] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A magnetic suction type quantitative dripping device for dye liquor based on photoelectric liquid level detection, comprising a tube body, an inlet tube (2) disposed at the bottom end of the tube body (1), a button (3) disposed at the top of the tube body (1), a disposable pipette (4) installed at the end of the inlet tube (2), a connecting plate (5) fixed to the outer wall of the tube body (1), an adjuster (6) installed on the connecting plate (5), and a suspension block (7) arranged at the end of the tube body (1); characterized in that The tube body (1) is a hollow structure. One end of the inlet tube (2) is connected to the tube body (1), and the other end is used to insert into the container of the dye solution to be drawn. The disposable pipette (4) is detachably installed at one end of the connecting tube (21) inside the inlet tube (2). The disposable pipette (4) includes a conical pipette head (41) at one end, a protrusion (42) formed on the outer wall of the pipette, and an iron sheet (43) fixed on the surface of the protrusion (42). The connecting tube (21) is provided with a groove (25) made of magnetic material. The disposable pipette (4) is held in the groove (25) of the connecting tube (21) by the mutual adsorption of the iron sheet (43) and the magnetic material (26). The connecting plate (5) is arranged along the axial direction of the pipe body (1). The connecting plate (5) is provided with an adjuster (6) that can adjust the position of the photoelectric device on the guide rail (22) to change the liquid level detection height. The photoelectric device includes a photoelectric transmitter (23) and a photoelectric receiver (24) arranged opposite to each other along the guide rail (22). The photoelectric receiver (24) receives the light signal emitted by the photoelectric transmitter (23) and interrupts the signal when the liquid level is reached to form a detection signal. The tube (1) is equipped with an air intake structure, which consists of a straight rod (32) coaxially arranged with the button (3), a spring (31) sleeved on the outer periphery of the straight rod (32), a switch (33) fixed at one end of the straight rod (32), and an air intake valve (34) connected to the switch (33). The button (3) is connected to the switch (33) through the straight rod (32). The photoelectric receiver (24) is connected to the control circuit of the air intake valve (34) to control the air intake valve (34) to switch to the closed state when the liquid level reaches the height of the photoelectric device.

2. The magnetic dye solution quantitative dropping device based on photoelectric liquid level detection according to claim 1, characterized in that, The regulator (6) controls the photoelectric device to move along the guide rail (22) by operating the button to set the liquid absorption volume.

3. The magnetic dye solution quantitative dropping device based on photoelectric liquid level detection according to claim 1, characterized in that, The suspension block (7) is set at one end of the tube (1) to suspend the entire device on the experimental table or support for easy operation and fixation.

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