A through-drainage centrifugal liquid extraction tube

Abstract

The present invention discloses a through-drainage centrifugal liquid extraction tube, which comprises a liquid storage tube, a sealing plate, a liquid suction tube, a plugging head, a through component and a control mechanism; after the selected liquid suction tube of the present invention sucks the liquid, the moving collar below the liquid suction tube is driven by the control mechanism to move upward, and at the same time drives the telescopic sealing tube to stretch upward. The moving collar moves upward and is hermetically sleeved around the liquid suction tube. At the same time, the elastic pressing plate is pressed by the bottom of the liquid suction tube to move downward inside the telescopic sealing tube. At this time, an annular air guide groove is formed between the outer periphery of the lower end of the liquid suction tube and the inner periphery of the moving collar, and the liquid suction port is located inside the annular air guide groove. Then the whole structure is inverted. In this way, by squeezing the air bag, the air flow is discharged from the fixed tube body and enters the annular air guide groove through the telescopic sealing tube. Finally, the air flow enters from the liquid suction port to squeeze the liquid in the liquid suction tube out. In this way, it is not necessary to extract the liquid suction tube, and the structural design is ingenious and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to a through-drainage centrifugal liquid extraction tube. Background Art

[0002] A centrifuge tube is a commonly used medical device, mainly used for the detection of some liquid specimens; the liquid in the centrifuge tube will be divided into several layers after being centrifuged by a centrifuge, and when the centrifugation is completed, the liquids in different layers need to be taken out separately; generally, multiple liquid suction tubes are inserted into the existing centrifuge tube, the upper end of the liquid suction tube is movably closed, and the lower end of the liquid suction tube contacts the stratified liquid inside the centrifuge tube. When liquid needs to be sucked, the upper end of the corresponding liquid suction tube can be opened, so that the liquid suction tube sucks the liquid through the capillary effect, so as to suck the liquid at the required layer position. Then, the liquid suction tube needs to be removed from the centrifuge tube, and then the liquid in the liquid suction tube is extruded by sleeving an external airbag. In this way, the operator needs to first extract the liquid suction tube and then insert the external airbag, making the operation very cumbersome. Moreover, when the liquid suction tube is extracted, there will be disadvantages such as contamination, bending, breakage, and dripping of liquid, and the required operation precision and difficulty are relatively high. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the problem solved by the present invention is to provide a through-drainage centrifugal liquid extraction tube with convenient operation.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A through-drainage centrifugal liquid extraction tube, comprising a liquid storage tube, a closing plate, a liquid suction tube, a plugging head, a through-component, and a control mechanism; the liquid storage tube has a structure with its periphery and bottom closed and its upper end open; a closing plate is installed at the upper end of the liquid storage tube; a plurality of liquid suction tubes are slidably inserted through the closing plate, and the lengths of the plurality of liquid suction tubes are different; the liquid suction tube has a structure with its periphery and bottom closed and its upper end open; liquid suction ports are respectively formed on both sides of the bottom of the liquid suction tube; a plugging head is installed at the upper end of the liquid suction tube; a plurality of through-components are installed at the bottom of the liquid storage tube; a through-component is respectively correspondingly distributed below each liquid suction tube; the through-component includes a moving ring sleeve, a spring pressing plate, a telescopic sealing tube, an internal spring, a fixed tube body, and an extrusion air bag; a plurality of fixed tube bodies are fixedly inserted at the bottom of the liquid storage tube; the lower ends of the fixed tube bodies extend to the outside below the liquid storage tube, and an extrusion air bag is installed at the lower end of each fixed tube body; the upper ends of the fixed tube bodies extend to the inside below the liquid storage tube, and a telescopic sealing tube is connected to the periphery of the upper ends of the fixed tube bodies; a moving ring sleeve is installed at the upper end of the telescopic sealing tube; an internal spring is installed in the middle of the fixed tube body, the telescopic sealing tube, and the moving ring sleeve; the upper end of the internal spring is fixedly connected to a spring pressing plate; the internal spring presses the spring pressing plate upward so that the outer periphery of the spring pressing plate is in sealed abutment with the inner periphery of the upper end of the moving ring sleeve; a plurality of control mechanisms are installed around the liquid storage tube, and a control mechanism is respectively correspondingly distributed on one side of the moving ring sleeve. The control mechanism drives the moving ring sleeve to move upward, and at the same time drives the telescopic sealing tube to stretch upward. The moving ring sleeve moves upward and is sleeved around the liquid suction tube in a sealed manner. At the same time, the spring pressing plate is pressed by the bottom of the liquid suction tube so that the spring pressing plate moves downward inside the telescopic sealing tube. At this time, an annular air guiding groove is formed between the outer periphery of the lower end of the liquid suction tube and the inner periphery of the moving ring sleeve, and the liquid suction port is located inside the annular air guiding groove.

[0006] Further, a radial connecting rod is provided in the middle of the fixed tube body, and a plugging cylinder is provided on the upper side of the middle of the radial connecting rod. The lower end of the internal spring is inserted into the inside of the plugging cylinder.

[0007] Further, the outer periphery of the spring pressing plate and the inner periphery of the upper end of the moving ring sleeve both have a conical ring surface structure with a smaller upper part and a larger lower part.

[0008] Further, the control mechanism includes a horizontal connecting rod, a control block, a control screw, and a driving head; a plurality of longitudinal slide rails are evenly formed on the inner periphery of the liquid storage tube; a control block is respectively slidably clamped up and down in each longitudinal slide rail, a control screw is respectively screwed on each control block, the lower end of the control screw is connected to the driving head, the driving head extends downward to the lower side of the side of the liquid storage tube, and the driving head is rotatably connected to the lower side of the longitudinal slide rail in a sealed manner; a horizontal connecting rod is respectively installed on one side of the moving ring sleeve, and the outer ends of the horizontal connecting rods are respectively connected to a control block.

[0009] Further, the telescopic sealing tube is made of corrugated pipe material.

[0010] Further, the plugging head is made of aluminum foil material or elastic polymer material.

[0011] Further, the longitudinal sections of the liquid suction tube and the liquid storage tube are both U-shaped structures.

[0012] The beneficial effects of the present invention are as follows:

[0013] After the liquid suction tube selected by the present invention sucks the liquid, the moving ring sleeve below the liquid suction tube is driven to move upward by the control mechanism, and at the same time, the telescopic sealing tube is driven to stretch upward. The moving ring sleeve moves upward and is hermetically sleeved around the liquid suction tube. At the same time, the elastic pressing plate is pressed by the bottom of the liquid suction tube, so that the elastic pressing plate moves downward inside the telescopic sealing tube. At this time, an annular air guide groove is formed between the outer sides of the lower end of the liquid suction tube and the inner sides of the periphery of the moving ring sleeve, and the liquid suction port is located inside the annular air guide groove. Then, the whole structure is inverted. In this way, by squeezing the air bag, the air flow is discharged from the fixed tube body and enters the annular air guide groove through the telescopic sealing tube. Finally, the air flow enters from the liquid suction port and squeezes the liquid in the liquid suction tube to be discharged. In this way, it is not necessary to extract the liquid suction tube, and the structural design is ingenious and the operation is convenient. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present invention.

[0015] Figure 2 is a schematic structural diagram of the moving ring sleeve of the present invention moving upward and being hermetically sleeved around the liquid suction tube.

[0016] Figure 3 is of the present invention Figure 1 partial enlarged schematic structural diagram.

[0017] Figure 4 is of the present invention Figure 2 partial enlarged schematic structural diagram.

[0018] Figure 5 is of the present invention Figure 4 schematic structural diagram of the annular air guide groove in. Embodiment

[0019] The following further describes the content of the present invention in detail with reference to the drawings.

[0020] As Figures 1 to 5As shown in the figure, a through-drainage centrifugal liquid extraction tube includes a liquid storage tube 1, a closing plate 2, a liquid suction tube 3, a plugging head 4, a through-component 5, and a control mechanism 6. The liquid storage tube 1 has a structure with its perimeter and bottom closed and its upper end open. The closing plate 2 is installed at the upper end of the liquid storage tube 1. A plurality of liquid suction tubes 3 are slidably inserted through the closing plate 2, and the lengths of the plurality of liquid suction tubes 3 are different. The liquid suction tube 3 has a structure with its perimeter and bottom closed and its upper end open. Liquid suction ports 31 are respectively provided on both sides of the bottom of the liquid suction tube 3. The plugging head 4 is installed at the upper end of the liquid suction tube 3. A plurality of through-components 5 are installed at the bottom of the liquid storage tube 1. One through-component 5 is respectively correspondingly distributed below each liquid suction tube 3. The through-component 5 includes a moving ring sleeve 51, a spring pressing plate 52, a telescopic sealing tube 53, a built-in spring 54, a fixed tube body 55, and an extrusion airbag 56. A plurality of fixed tube bodies 55 are fixedly inserted at the bottom of the liquid storage tube 1. The lower end of the fixed tube body 55 extends to the outside below the liquid storage tube 1, and an extrusion airbag 56 is installed at the lower end of each fixed tube body 55. The upper end of the fixed tube body 55 extends to the inside below the liquid storage tube 1, and the telescopic sealing tube 53 is connected to the perimeter of the upper end of the fixed tube body 55. The moving ring sleeve 51 is installed at the upper end of the telescopic sealing tube 53. A built-in spring 54 is installed in the middle of the fixed tube body 55, the telescopic sealing tube 53, and the moving ring sleeve 51. The upper end of the built-in spring 54 is fixedly connected to a spring pressing plate 52. The built-in spring 54 presses the spring pressing plate 52 upward so that the outer perimeter of the spring pressing plate 52 is in sealed contact with the inner perimeter of the upper end of the moving ring sleeve 51. A plurality of control mechanisms 6 are installed around the liquid storage tube 1. One control mechanism 6 is respectively correspondingly distributed on one side of the moving ring sleeve 51. The control mechanism 6 drives the moving ring sleeve 51 to move upward, and at the same time drives the telescopic sealing tube 53 to stretch upward. The moving ring sleeve 51 moves upward and is hermetically sleeved around the liquid suction tube 3. At the same time, the spring pressing plate 52 is pressed by the bottom of the liquid suction tube 3 so that the spring pressing plate 52 moves downward inside the telescopic sealing tube 53. At this time, an annular air guiding groove 511 is formed between the outer perimeter of the lower end of the liquid suction tube 3 and the inner perimeter of the outer perimeter of the moving ring sleeve 51, and the liquid suction port 31 is located inside the annular air guiding groove 511.

[0021] As Figures 1 to 5 shown, for the convenience of assembling the built-in spring 54, further, a radial connecting rod 541 is provided in the middle of the fixed tube body 55, and a plugging cylinder 542 is provided on the upper side of the middle of the radial connecting rod 541. The lower end of the built-in spring 54 is inserted into the inside of the plugging cylinder 542.

[0022] As Figures 1 to 5 shown, in order to improve the pressing tightness between the spring pressing plate 52 and the moving ring sleeve 51 and the formation of the annular air guiding groove 511, further, the outer perimeter of the spring pressing plate 52 and the inner perimeter of the upper end of the moving ring sleeve 51 both have a tapered ring surface structure with a smaller upper part and a larger lower part.

[0023] AsFigures 1 to 5 As shown, in order to facilitate the longitudinal drive of the movable collar 51, it is further preferred that the control mechanism 6 includes a horizontally arranged connecting rod 61, a control block 62, a control screw 63, and a driving head 64; a plurality of longitudinal sliding rails 11 are uniformly formed on the inner sides around the liquid storage tube 1; a control block 62 is slidably clamped up and down in each of the longitudinal sliding rails 11, a control screw 63 is threadedly connected to each control block 62, the lower end of the control screw 63 is connected to the driving head 64, the driving head 64 extends downward to the lower side of the side of the liquid storage tube 1, and the driving head 64 is rotatably connected to the lower side of the longitudinal sliding rail 11 in a sealed manner; a horizontally arranged connecting rod 61 is respectively installed on one side of the movable collar 51, and the outer ends of the horizontally arranged connecting rods 61 are respectively connected to a control block 62. Further, the telescopic sealing tube 53 is made of bellows material. Further, the plug 4 is made of aluminum foil material or elastic polymer material. Further, the longitudinal cross-sections of the liquid suction tube 3 and the liquid storage tube 1 are both U-shaped structures.

[0024] After the liquid suction tube 3 selected by the present invention sucks the liquid, the movable collar 51 below the liquid suction tube 3 is driven by the control mechanism 6 to move upward, and at the same time, the telescopic sealing tube 53 is driven to stretch upward. The movable collar 51 moves upward and is hermetically sleeved around the liquid suction tube 3. At the same time, the elastic pressing plate 52 is pressed by the bottom of the liquid suction tube 3, so that the elastic pressing plate 52 moves downward inside the telescopic sealing tube 53. At this time, an annular air guide groove 511 is formed between the outer sides of the lower ends of the liquid suction tube 3 and the inner sides of the movable collar 51, and the liquid suction port 31 is located inside the annular air guide groove 511. Then the whole structure is inverted. In this way, by squeezing the air bag 56, the air flow is discharged from the fixed tube body 55 and enters the annular air guide groove 511 through the telescopic sealing tube 53. Finally, the air flow enters from the liquid suction port 31 and discharges the liquid in the squeezed liquid suction tube 3. In this way, it is not necessary to extract the liquid suction tube 3, and the structural design is ingenious and the operation is convenient.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A through-drainage centrifugal liquid extraction tube, characterized in that, It includes a liquid storage tube, a closing plate, a liquid suction tube, a plugging head, a through-component, and a control mechanism; the liquid storage tube has a structure with its periphery and bottom closed and its upper end open; the closing plate is installed at the upper end of the liquid storage tube; a plurality of liquid suction tubes are slidably inserted through the closing plate, and the lengths of the plurality of liquid suction tubes are different; the liquid suction tube has a structure with its periphery and bottom closed and its upper end open; liquid suction ports are respectively provided on both sides of the bottom of the liquid suction tube; the plugging head is installed at the upper end of the liquid suction tube; a plurality of through-components are installed at the bottom of the liquid storage tube; one through-component is respectively correspondingly distributed below each liquid suction tube; the through-component includes a movable ring sleeve, a spring pressing plate, a telescopic sealing tube, a built-in spring, a fixed tube body, and an extrusion air bag; a plurality of fixed tube bodies are fixedly inserted at the bottom of the liquid storage tube; the lower end of the fixed tube body extends to the outside below the liquid storage tube, and an extrusion air bag is installed at the lower end of each fixed tube body; the upper end of the fixed tube body extends to the inside below the liquid storage tube, and a telescopic sealing tube is connected around the upper end of the fixed tube body; the movable ring sleeve is installed at the upper end of the telescopic sealing tube; a built-in spring is installed in the middle of the fixed tube body, the telescopic sealing tube, and the movable ring sleeve; the upper end of the built-in spring is fixedly connected to a spring pressing plate; the built-in spring presses the spring pressing plate upward so that the outer periphery of the spring pressing plate is in sealing contact with the inner periphery of the upper end of the movable ring sleeve; a plurality of control mechanisms are installed around the liquid storage tube, and one control mechanism is respectively correspondingly distributed on one side of the movable ring sleeve. The control mechanism drives the movable ring sleeve to move upward, simultaneously drives the telescopic sealing tube to be stretched upward, the movable ring sleeve moves upward and is hermetically sleeved around the liquid suction tube, and at the same time, the spring pressing plate is pressed by the bottom of the liquid suction tube so that the spring pressing plate moves downward inside the telescopic sealing tube. At this time, an annular air guiding groove is formed between the outer periphery of the lower end of the liquid suction tube and the inner periphery of the movable ring sleeve, and the liquid suction port is located inside the annular air guiding groove.

2. The through-drainage centrifugal liquid extraction tube according to claim 1, characterized in that A radial connecting rod is provided in the middle of the fixed tube body, and a plugging cylinder is provided on the upper side of the middle of the radial connecting rod. The lower end of the built-in spring is inserted into the inside of the plugging cylinder.

3. The through-drainage centrifugal liquid extraction tube according to claim 1, characterized in that The outer periphery of the spring pressing plate and the inner periphery of the upper end of the movable ring sleeve both have a tapered ring surface structure with a smaller upper part and a larger lower part.

4. The through-drainage centrifugal liquid extraction tube according to claim 1, wherein The control mechanism includes a horizontal connecting rod, a control block, a control screw, and a driving head; a plurality of longitudinal sliding rails are evenly provided on the inner side of the periphery of the liquid storage tube; a control block is respectively slidably clamped up and down in each longitudinal sliding rail, a control screw is respectively screwed on each control block, the lower end of the control screw is connected to the driving head, the driving head extends downward to the lower side of the side of the liquid storage tube, and the driving head is in sealing rotation connection with the lower side of the longitudinal sliding rail; a horizontal connecting rod is respectively installed on one side of the movable ring sleeve, and the outer ends of the horizontal connecting rods are respectively connected to a control block.

5. The through-drainage centrifugal liquid extraction tube according to claim 1, wherein The telescopic sealing tube is made of corrugated pipe material.

6. The through-drainage centrifugal liquid extraction tube according to claim 1, wherein The plugging head is made of aluminum foil material or elastic polymer material.

7. The through-drainage centrifugal liquid extraction tube according to claim 1, wherein The longitudinal cross-sections of the liquid suction tube and the liquid storage tube both have a U-shaped structure.

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