CN214107006U

CN214107006U - Test tube cover

Info

Publication number: CN214107006U
Application number: CN202022196020.4U
Authority: CN
Inventors: 吴红清
Original assignee: Jiangyin Homen Rubber Plastic Product Co ltd
Current assignee: Jiangyin Homen Rubber Plastic Product Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-09-03
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a test tube cover, include the top cap and the cylindric lid of making by elastic silica gel, the big or small shape of lid and the inner wall looks adaptation of the test tube mouth of test tube, the center department of top cap is equipped with the cross opening, and cross open-ended lower extreme is equipped with the elasticity awl section of thick bamboo that the radius reduces downwards gradually, the inner wall of the lower extreme of elasticity awl section of thick bamboo is equipped with the caulking groove, the filter piece is filtered to the embedded millipore filtration membrane of establishing of caulking groove. The test tube cover of the utility model has the advantages of simple structure, easy liquid adding and capability of keeping the balance of the air pressure inside and outside the test tube.

Description

Test tube cover

Technical Field

The utility model relates to an experimental device technical field, concretely relates to test tube cover.

Background

Test tubes are common tools in laboratories and are mainly used for glass containers for holding solids, liquids and even bacteria. The sealed main dependence test tube of test tube generally covers and realizes, can prevent that the material from being contaminated, when adding the material in the test tube, need open the test tube lid and add the material toward the test tube, however, open test tube lid misoperation and can cause the interior material of test tube to spatter outward. Liquid is added into the test tube by puncturing the rubber sleeve test tube cover by using an injector, but the air pressure difference between the inside and the outside of the test tube exists when the adding substance is injected for many times, so that the air pressure in the test tube is possibly greater than the atmospheric pressure, and the test tube cover is ejected; in addition, after the rubber sleeve is punctured for multiple times, rubber particles punctured by the syringe are easily brought into substances in the test tube.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a simple structure, easily liquid feeding, and can keep the inside and outside atmospheric pressure balanced test tube lid in test tube.

In order to achieve the above object, the technical scheme of the utility model is to design a test tube cover, include top cap and the cylindric lid of being made by elastic silica gel, the big or small shape of lid and the inner wall looks adaptation of the test tube mouth of test tube, the center department of top cap is equipped with the cross line opening, and cross line open-ended lower extreme is equipped with the elasticity awl section of thick bamboo that the radius reduces gradually downwards, the inner wall of the lower extreme of elasticity awl section of thick bamboo is equipped with the caulking groove, the embedded millipore filtration filter piece of establishing of caulking groove. When substances are required to be added into the test tube, the burette is inserted into the upper part of the filtering piece of the microporous filter membrane through the cross line opening on the top cover and is injected, and the test tube cover is not required to be opened, so that the liquid is convenient to add; in the liquid adding process, when the air pressure in the test tube is temporarily higher than the external atmospheric pressure, the conical cylinder slightly deforms under the combined action of the elasticity of the elastic conical cylinder and the pressure in the test tube to balance the internal air pressure and the external air pressure, and the external additive is continuously added; after the liquid is added, the internal and external air pressures are adjusted to be balanced through the aperture of the microporous filter membrane filter piece, and the shape of the cone is recovered; meanwhile, after the liquid adding is finished, the opening of the cross line is closed again, and foreign matters are prevented from falling into the test tube.

In order to improve the accurate amount of liquid feeding, the preferable technical scheme is that the inner wall of the middle section of the elastic cone cylinder is provided with a cross valve clack. The inner wall of a awl section of thick bamboo sets up the cross valve clack, and when the buret was extracted, the cross valve clack was pacified the not dripped liquid drop in at buret top and is fallen to elasticity awl section of thick bamboo in, has improved the accurate volume of liquid feeding.

In order to avoid friction between the burette and the cross valve clack when returning, the cone cylinder is brought back to the top cover, and a further preferable technical scheme is that a reinforcing strip is axially arranged on the outer side wall of the elastic cone cylinder and extends to the lower bottom surface of the top cover.

The further preferred technical scheme is that the upper surface of the top cover is provided with a spherical groove, the height of the spherical groove is not more than 2/3 of the diameter of the spherical groove and is not less than the radius of the spherical groove; an indicating ball is embedded in the spherical groove, and the surfaces of the indicating balls are respectively coated with red and green pigments in half. The embedded red green ball that indicates of establishing of globular recess, when the sample that adorns needs priority to be handled in the test tube, can promote the ball that indicates to coat red pigment's spheroid part and expose at the opening part of globular recess, when the sample that adorns in the test tube is ordinary sample, can promote the ball that indicates to coat green pigment's spheroid part and expose at the opening part of globular recess, can effectively distinguish the sample from this.

The technical scheme is that a plurality of salient points are arranged on the surface of the indicating ball.

The further preferred technical scheme does, the outside of lid still is equipped with outer lid, and the inner wall of outer lid sets up two bulge loops coaxially, and the length of outer lid is greater than the length of lid. Sample when shaking or other treatments in the test tube, inside sample has probably to spatter on lid or the awl section of thick bamboo, and the length of enclosing the lid is greater than the length of lid, when opening the test tube lid, avoids the finger to touch inside lid or awl section of thick bamboo, reduces the sample pollution.

In order to facilitate the opening of the test tube cover, a further preferable technical scheme is that the difference between the radius of the top cover and the radius of the outer cover body is 0.2-0.5 mm.

The utility model has the advantages and the beneficial effects that: the test tube cover has the advantages of simple structure, easy liquid adding and capability of keeping the balance of air pressure inside and outside the test tube. When liquid is added, the burette is inserted into the upper part of the filtering piece of the microporous filter membrane through the cross line opening on the top cover and is injected, the test tube cover is not required to be opened, and the liquid is conveniently added; during the liquid adding process, the conical cylinder slightly deforms to balance the internal and external air pressures, after the liquid adding is completed, the internal and external air pressures are adjusted to balance the internal and external air pressures through the aperture of the microporous filter membrane filter piece, and the shape of the conical cylinder is recovered; meanwhile, after liquid adding is finished, the opening of the cross line is closed again, and external substances are prevented from falling into the test tube; the cross valve clack is arranged on the inner wall of the cone cylinder, when the burette is pulled out, the cross valve clack smooths the liquid drops which are not dripped from the top end of the burette into the elastic cone cylinder, and the accurate amount of liquid feeding is improved; a red and green indicating ball is embedded in the spherical groove, so that the indicating ball can be rotated to different color parts, and samples can be quickly and effectively distinguished; the length of outer lid is greater than the length of lid, when opening the test tube lid, avoids the finger to touch inside lid or awl section of thick bamboo, reduces the sample and pollutes.

Drawings

FIG. 1 is a schematic cross-sectional view of a test tube cover according to the present invention;

FIG. 2 is a schematic top view of the test tube cover of the present invention;

fig. 3 is a schematic view showing a connection structure between the indication ball and the cap.

In the figure: 1. a top cover; 2. a cover body; 3. opening a cross line; 4. an elastic cone; 5. filtering with microporous filter membrane; 6. a cross valve clack; 7. a reinforcing strip; 8. an indicator ball; 9. salient points; 10. an outer cover body; 11. a convex ring.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 3, the utility model relates to a test tube cover, include top cap 1 and cylindric lid 2 made by elastic silica gel, the big or small shape of lid and the inner wall looks adaptation of the test tube mouth of test tube, the center department of top cap is equipped with cross opening 3, and cross open-ended lower extreme is equipped with the elasticity awl section of thick bamboo 4 that the radius reduces gradually downwards, the inner wall of the lower extreme of elasticity awl section of thick bamboo is equipped with the caulking groove, the filter piece 5 is filtered to the embedded millipore filtration of establishing of caulking groove.

And a cross valve clack 6 is arranged on the inner wall of the middle section of the elastic cone cylinder.

The lateral wall axial of elasticity awl section of thick bamboo is equipped with reinforcing bar 7, and reinforcing bar extends to the lower bottom surface of top cap.

The upper surface of the top cover is provided with a spherical groove, the height of the spherical groove is not more than 2/3 of the diameter of the spherical groove and is not less than the radius of the spherical groove; an indicating ball 8 is embedded in the spherical groove, and the surfaces of the indicating balls are respectively coated with red and green pigments in half.

The surface of the indicating ball is provided with a plurality of salient points 9.

The outer side of the cover body is also provided with an outer cover body 10, the inner wall of the outer cover body is coaxially provided with two convex rings 11, and the length of the outer cover body is greater than that of the cover body.

The radius difference between the top cover and the outer cover body is 0.2-0.5 mm.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a test tube cover, its characterized in that includes top cap and the cylindric lid of making by elastic silica gel, the big or small shape of lid and the inner wall looks adaptation of the test tube mouth of test tube, and the center department of top cap is equipped with the cross opening, and cross open-ended lower extreme is equipped with the elasticity awl section of thick bamboo that the radius reduces gradually downwards, the inner wall of the lower extreme of elasticity awl section of thick bamboo is equipped with the caulking groove, the embedded millipore filtration piece of establishing of caulking groove.

2. The test tube cover of claim 1, wherein the inner wall of the middle section of the elastic cone is provided with a cross-shaped valve flap.

3. The test tube cover of claim 2, wherein the outer side wall of the elastic cone is provided with a reinforcing strip axially, and the reinforcing strip extends to the lower bottom surface of the top cover.

4. The cuvette lid according to claim 3, wherein the upper surface of the top lid is provided with a spherical groove having a height not greater than 2/3 of its diameter and not less than a radius; an indicating ball is embedded in the spherical groove, and the surfaces of the indicating balls are respectively coated with red and green pigments in half.

5. The cuvette lid according to claim 4, wherein the surface of the indicating ball is provided with a plurality of protruding points.

6. The test tube cover of claim 5, wherein an outer cover is further disposed on the outer side of the cover, two convex rings are coaxially disposed on the inner wall of the outer cover, and the length of the outer cover is greater than that of the cover.

7. The cuvette cap according to claim 6, wherein the radius of the top cap differs from the radius of the outer cap by 0.2-0.5 mm.