Closed extraction dropper

Abstract

The application discloses a closed extraction type dropper, which comprises a liquid storage cylinder, a closed cover and a closed extraction assembly. The closed extraction type dropper is characterized in that the rotary joint ring body is driven to move upwards by rotating the central power column, the extraction ring sleeve is driven to move upwards by the connecting rod, the extraction ring sleeve is sealed against the lower end of the closed cover after moving upwards and extracting liquid, the liquid in the annular liquid storage groove of the extraction ring sleeve is the quantitative volume of the extracted liquid, the liquid in the extraction ring sleeve is discharged from the plurality of liquid drop holes by inverting the liquid storage cylinder, and thus the liquid is conveniently and quantitatively dropped.

Description

TECHNICAL FIELD

[0001] The present application relates to a closed extraction type dropper. BACKGROUND

[0002] The dropper is a device for quantitatively dropping liquid from the inside of the tube body, which is widely used in medical detection, especially for virus detection. The existing dropper generally includes a tube body and a dropper head. The inside of the tube body is generally filled with reagent. After the sample to be detected is sent into the reagent in the tube body, the dropper head is sleeved on one end of the tube body, and then the whole device is inverted. The liquid is dropped through the dropper head. However, it is generally difficult to control the volume of the dropped liquid, and when it is necessary to accurately control the volume of the dropped liquid, the work difficulty of the operator is increased, so it is necessary to control the volume of the dropped liquid. SUMMARY

[0003] In view of the above shortcomings of the prior art, the present application solves the problem of providing a closed extraction type dropper which can accurately control the volume of the dropped liquid.

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

[0005] A closed extraction type dropper, comprising a liquid storage cylinder, a closed cover, and a closed extraction assembly. The periphery and bottom of the liquid storage cylinder are closed, and the upper end of the liquid storage cylinder is open. The closed cover is installed on the upper end of the liquid storage cylinder. A plurality of liquid drop holes are formed in the middle of the closed cover. The closed extraction assembly is installed in the liquid storage cylinder. The closed extraction assembly comprises a central power column, a rotating ring body, a connecting rod, and an extraction ring sleeve. The central power column is installed in the middle of the inside of the liquid storage cylinder, and the lower end of the central power column is rotatably connected to the lower inside of the liquid storage cylinder, and the lower end of the central power column extends to the outside of the lower end of the liquid storage cylinder. A rotating ring body is threadedly connected to the outside of the periphery of the central power column. Two connecting rods are installed on the two sides of the rotating ring body, and an extraction ring sleeve is installed on the outer ends of the two connecting rods. An annular liquid storage groove is formed in the upper end of the extraction ring sleeve. The extraction ring sleeve is slidably connected to the inside of the liquid storage cylinder. The central power column rotates to drive the rotating ring body to move upward, the rotating ring body drives the extraction ring sleeve to move upward through the connecting rod, and the extraction ring sleeve moves upward and extracts liquid, and then seals against the lower end of the closed cover. The plurality of liquid drop holes of the closed cover are located above the extraction ring sleeve. Inverting the liquid storage cylinder causes the liquid in the extraction ring sleeve to be discharged from the plurality of liquid drop holes.

[0006] Further, a flow guide cover is provided on the outside of the upper end of the closed cover. The flow guide cover has a tapered structure with a small upper end and a large lower end. A liquid discharge pipe is provided in the middle of the upper end of the flow guide cover.

[0007] Further, the extraction ring sleeve is provided with sliding clamping rods on both sides, the inside of both ends of the liquid storage cylinder is provided with longitudinal clamping grooves, and the outer ends of the sliding clamping rods are slid upward and downward and clamped on the longitudinal clamping grooves.

[0008] Further, the lower end of the central power column is provided with a driving handle, and the middle of the lower end of the liquid storage cylinder is provided with a driving groove.

[0009] Further, the lower part of the central power column is rotationally clamped with the middle inside of the lower end of the liquid storage cylinder through a sealing ring.

[0010] Further, the upper end of the annular liquid storage groove is provided with a sealing ring body on the outer side and the inner side, and the sealing ring body is made of rubber material.

[0011] Further, the outer side of the upper end of the liquid storage cylinder is provided with an external thread ring surface, the lower end of the four sides of the sealing cover is provided with a threaded ring, and the threaded ring of the lower end of the four sides of the sealing cover is screwed on the external thread ring surface of the upper end of the liquid storage cylinder.

[0012] Further, the longitudinal section of the liquid storage cylinder is in U-shaped structure.

[0013] The beneficial effects of the present application are as follows:

[0014] The present application drives the threaded ring body to move upward by rotating the central power column, drives the extraction ring sleeve to move upward through the connecting rod, seals the lower end of the sealing cover after the extraction ring sleeve moves upward and extracts the liquid, at this time, the liquid in the annular liquid storage groove of the extraction ring sleeve is the extracted liquid with a fixed volume, then the liquid storage cylinder is inverted, the liquid in the extraction ring sleeve is discharged from the plurality of liquid drop holes, and thus the liquid is conveniently and quantitatively dropped. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present application.

[0016] Figure 2 It is a structural schematic diagram of the present application, in which the extraction ring sleeve moves upward and seals the sealing cover.

[0017] Figure 3 It is a structural schematic diagram of the present application, in which the liquid is dropped.

[0018] Figure 4 It is a structural schematic diagram of the present application Figure 1 of the lower part.

[0019] Figure 5 It is a structural schematic diagram of the present application Figure 3 of the lower part. EMBODIMENT

[0020] The application will be further described in detail with reference to the accompanying drawings.

[0021] As Figures 1 to 5 shown, a closed extraction dropper comprises a liquid storage cylinder 1, a closed cover 2, a closed extraction assembly 3; the periphery and bottom of the liquid storage cylinder 1 are closed, and the upper end of the liquid storage cylinder 1 is open; the closed cover 2 is installed on the upper end of the liquid storage cylinder 1; a plurality of liquid droplet holes 21 are formed in the middle of the periphery of the closed cover 2; the closed extraction assembly 3 is installed in the liquid storage cylinder 1; the closed extraction assembly 3 comprises a central power column 31, a rotating ring body 32, a connecting rod 33, and an extraction ring sleeve 34; the central power column 31 is installed in the middle of the interior of the liquid storage cylinder 1, the lower end of the central power column 31 is rotationally connected to the lower interior of the liquid storage cylinder 1, and the lower end of the central power column 31 extends to the outside of the lower end of the liquid storage cylinder 1; a rotating ring body 32 is threadedly connected to the outside of the periphery of the central power column 31; two connecting rods 33 are respectively installed on the two sides of the rotating ring body 32, and an extraction ring sleeve 34 is jointly installed on the outer ends of the two connecting rods 33; an annular liquid storage groove 341 is arranged on the upper end of the extraction ring sleeve 34; the extraction ring 34 is slidably connected to the inside of the liquid storage cylinder 1; the central power column 31 rotationally drives the rotating ring body 32 to move upward, the rotating ring body 32 drives the extraction ring sleeve 34 to move upward through the connecting rod 33, the extraction ring sleeve 34 moves upward and extracts liquid, and then is sealingly abutted to the lower end of the closed cover 2; the plurality of liquid droplet holes 21 of the closed cover 2 are located above the extraction ring sleeve 34, and the liquid in the extraction ring sleeve 34 is discharged from the plurality of liquid droplet holes 21 by inverting the liquid storage cylinder 1.

[0022] As Figures 1 to 5 shown, in order to facilitate the dripping of liquid, further, a flow guide cover 4 is arranged on the outside of the upper end of the closed cover 2; the flow guide cover 4 has a tapered structure with a small upper end and a large lower end; and a liquid discharge pipe 5 is arranged in the middle of the upper end of the flow guide cover 4. In order to improve the movement stability of the extraction ring sleeve 34, further, a sliding connection rod 342 is arranged on each side of the extraction ring sleeve 34; longitudinal clamping grooves 12 are respectively arranged on the inner sides of the two ends of the liquid storage cylinder 1; and the outer ends of the sliding connection rods 342 are respectively slidably connected to the longitudinal clamping grooves 12.

[0023] As Figures 1 to 5 shown, in order to improve the convenience of operation, further, a driving handle 311 is arranged on the lower end of the central power column 31; a driving groove 11 is formed in the middle of the outside of the lower end of the liquid storage cylinder 1; and the driving handle 311 is located in the driving groove 11. Further, the lower part of the central power column 31 is rotationally connected to the middle of the inside of the lower end of the liquid storage cylinder 1 through a sealing ring.

[0024] As Figures 1 to 5As shown, in order to ensure the abutting sealing of the extraction ring 34 and the closure cap 2, further, the upper end outer side and the upper end inner side of the annular liquid storage groove 341 are both provided with a sealing ring body 343; the sealing ring body 343 is made of rubber material. In order to realize the movable installation of the liquid storage cylinder 1 and the closure cap 2, further, the upper end outer side of the liquid storage cylinder 1 is provided with an external thread ring surface; the lower end of the closure cap 2 is provided with a screw ring 22; the screw ring 22 of the lower end of the closure cap 2 is screwed on the external thread ring surface of the upper end of the liquid storage cylinder 1. Further, the longitudinal section of the liquid storage cylinder 1 is in U-shaped structure.

[0025] The present application drives the screw ring body 32 to move upward by rotating the central power column 31, the screw ring body 32 drives the extraction ring 34 to move upward through the connecting rod 33, the extraction ring 34 is sealed and abuts the lower end of the closure cap 2 after moving upward and extracting liquid, at this time, the liquid in the annular liquid storage groove 341 of the extraction ring 34 is the extracted liquid with a fixed volume, then the liquid storage cylinder 1 is inverted, so that the liquid in the extraction ring 34 is discharged from the plurality of liquid drop holes 21, thus realizing the convenient liquid drop with a fixed volume.

[0026] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A closed extraction dropper, characterized in that: The invention comprises a liquid storage cylinder, a closing cover, and a closing extraction component; the four sides and the bottom of the liquid storage cylinder are closed, and the upper end of the liquid storage cylinder is open; the closing cover is installed at the upper end of the liquid storage cylinder; a plurality of drip holes are provided around the middle of the closing cover; the closing extraction component is installed in the liquid storage cylinder; the closing extraction component comprises a central power column, a rotating ring body, a connecting rod, and an extraction ring sleeve; the central power column is installed in the middle of the liquid storage cylinder, the lower end of the central power column is rotatably connected to the lower part of the liquid storage cylinder, and the lower end of the central power column extends to the outside of the lower end of the liquid storage cylinder; a rotating ring body is screwed on the outer side of the four sides of the central power column; the rotating ring body A connecting rod is installed on each side, and an extraction ring sleeve is installed around the outer ends of the two connecting rods; an annular liquid storage groove is provided around the upper end of the extraction ring sleeve; the extraction ring sleeve slides up and down and is clamped in the liquid storage cylinder; the central power column rotates to drive the screw-on ring body to move upward, and the screw-on ring body drives the extraction ring sleeve to move upward through the connecting rod, and after the extraction ring sleeve moves upward and extracts the liquid, it is sealed and abutted against the lower end of the closing cover. The multiple drip holes of the closing cover are located above the extraction ring sleeve, and the liquid storage cylinder is inverted so that the liquid in the extraction ring sleeve is discharged from the multiple drip holes; the lower part of the central power column is rotatably clamped with the inner middle side of the lower end of the liquid storage cylinder through a sealing ring.

2. The closed extraction dropper according to claim 1, characterized in that A flow guide cover is provided on the outside of the upper end of the closing cover; the flow guide cover is a conical structure with a small upper portion and a large lower portion; a drainage pipe is provided in the middle of the upper end of the flow guide cover.

3. The closed extraction dropper according to claim 1, characterized in that Sliding clamping rods are respectively provided on both sides of the extraction ring; longitudinal clamping grooves are respectively provided at both ends of the inner side of the liquid storage cylinder; and the outer ends of the sliding clamping rods are respectively slidably clamped on the longitudinal clamping grooves.

4. The closed extraction dropper according to claim 1, characterized in that A driving handle is provided at the lower end of the central power column; a driving groove is provided in the middle of the outer portion of the lower end of the liquid storage cylinder; and the driving handle is located in the driving groove.

5. The closed extraction dropper according to claim 1, characterized in that Sealing ring bodies are provided on the outer side and the inner side of the upper end of the annular liquid storage tank; the sealing ring bodies are made of rubber material.

6. The closed extraction dropper according to claim 1, characterized in that An external threaded ring surface is provided on the outer side around the upper end of the liquid storage cylinder; a screw-on ring is provided on the lower end around the closing cover; and the screw-on ring at the lower end around the closing cover is screwed onto the external threaded ring surface on the upper end of the liquid storage cylinder.

7. The closed extraction dropper according to claim 1, characterized in that The longitudinal section of the liquid storage cylinder is U-shaped.

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