CN110302576A - A device and method for making test tube have filtering function - Google Patents

Abstract

The invention provides a device and method for making a test tube have a filtering function, wherein the device for making a test tube have a filtering function has a cylindrical tube body, a filter screen, and a rib, the rib is located at the top opening edge of the tube body, and the filter screen is located at the cylindrical The bottom of the tube body, the inner diameter of the test tube wall≤the outer diameter of the rib≤the outer diameter of the test tube wall, and the outer diameter of the cylindrical tube body≤the inner diameter of the test tube wall. The cylindrical tube body can be placed in the test tube, and the ribs prevent the device with filtering function from falling into the test tube. Utilizing the above-mentioned device can make the existing test tube have the filtering function.

Description

A device and method for making test tube have filtering function

technical field

The invention relates to the field of filter test tubes, in particular to a device and a method for making test tubes have a filter function.

Background technique

Existing test tube is shown in Figure 1, and the operation method of using existing test tube to filter is that cotton mass is inserted in the test tube, circular filter paper is placed on the cotton mass, and the liquid to be filtered is poured into and filtered. However, the existing test tube filtration method has the following defects: 1) The edge of the filter paper is easy to fall down during the filtration process, which affects the filtration effect; 2) The cotton ball shrinks after absorbing water during the filtration process, and it is easy to fall into the filtered solution, resulting in filtration failure ; 3) The insertion and removal of cotton and filter paper requires tweezers, which is difficult to operate.

Contents of the invention

The object of the present invention is to provide a device and a method for making a test tube have a filtering function, so as to solve the problems in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A device for making a test tube have a filtering function, as shown in Figure 2, comprising a cylindrical tube body, a filter screen, and a rib, the rib is located at the top opening edge of the tube body, and the filter screen is located at the bottom of the cylindrical tube body. The inner diameter of the test tube wall≤the outer diameter of the rib≤the outer diameter of the test tube wall, and the outer diameter of the cylindrical tube body≤the inner diameter of the test tube wall. The cylindrical tube body can be placed in the test tube, and the ribs prevent the device with filtering function from falling into the test tube.

Preferably, the material of the device for making the test tube have a filtering function is inorganic quartz glass or PE plastic, PP plastic, PS plastic.

Preferably, the test tube is an inorganic quartz glass test tube or a PE plastic test tube, a PP plastic test tube, or a PS plastic test tube.

Preferably, the test tube has a test tube cap.

Preferably, the test tube cap is a screw-type test tube cap or a buckle-type test tube cap.

Preferably, the thickness and width of the ribs meet the requirements for the test tube cap to tightly cover the test tube.

A kind of method that makes test tube have filtering function, comprises the following steps, as shown in Figure 3,

Step 1), put the device that enables the test tube to have a filtering function into the test tube, and the rib is mounted on the edge of the test tube opening.

Step 2) Set a filter layer on the filter net, which can be filter paper or filter cotton, etc., and then pour the liquid to be filtered into the device that enables the test tube to have a filter function.

Preferably, a kind of method that makes test tube have filtering function, comprises the following steps,

Step 1), setting a filter layer on the filter net that makes the test tube have a filter function, and the filter layer can be filter paper or filter cotton.

Step 2), put the device with the filter layer to make the test tube have a filtering function into the test tube, and the rib is mounted on the edge of the test tube opening.

Step 3) Pour the liquid to be filtered into the device that enables the test tube to have a filtering function.

The beneficial effects of the present invention are: in operation, the filter device is easy to assemble and disassemble; by selecting a filter paper with a suitable size, the adverse effect of the edge lying down during its use can be avoided; the filter cotton can be prevented from shrinking after absorbing water and falling into the filter during the filter process; Filtration failure caused by the solution; the quality of the filtered solution can be more effectively guaranteed.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without creative work.

Accompanying drawing 1 is the existing schematic diagram of using test tube filtration method.

Accompanying drawing 2 is the schematic diagram of the device for making the test tube have filtering function according to the present invention.

Accompanying drawing 3 is the schematic view of the device using method for making the test tube have filtering function according to the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

A device for making the test tube have a filtering function, as shown in Figure 2, comprising a cylindrical tube body 1, a filter screen 2, and a rib 3, the rib 3 is located at the top opening edge of the cylindrical tube body 1, and the filter screen 2 is located at the cylindrical tube body 1 The bottom of the tube body 1. The inner diameter of the test tube wall≤the outer diameter of the rib 3≤the outer diameter of the test tube wall, and the outer diameter of the cylindrical tube body 1≤the inner diameter of the test tube wall. The cylindrical tube body 1 can be placed in the test tube, and the rib 3 prevents the device with filtering function from falling into the test tube. The material of the device for making the test tube have filtering function is inorganic quartz glass or PE plastic or PP plastic or PS plastic. The test tube has a test tube cap. The test tube cap is a screw-type test tube cap or a buckle-type test tube cap. The thickness and width of the rib 3 meet the requirements of the test tube cap tightly covering the test tube.

Example 1

A kind of method that makes test tube have filtering function, comprises the following steps, as shown in Figure 3,

Step 1), put the device that enables the test tube to have a filtering function into the test tube, and the rib 3 is mounted on the edge of the test tube opening.

Step 2) Set the filter layer 5 on the filter screen 2. The filter layer 5 can be filter paper or filter cotton, etc., then pour the liquid 6 to be filtered into the device that enables the test tube to have a filtering function, and tighten the test tube cap.

Example 2

A kind of method that makes test tube have filtering function, comprises the following steps:

Step 1), setting a filter layer 5 on the filter screen 2 of the device for making the test tube have a filter function, the filter layer 5 can be filter paper or filter cotton, etc.

Step 2), put the device with the filter layer 5 that enables the test tube to have a filtering function into the test tube, and the rib 3 is mounted on the edge of the test tube opening.

Step 3), pour the liquid 6 to be filtered into the device that enables the test tube to have a filtering function, and tighten the cap of the test tube.

The above descriptions are only 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 principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. A device for making the test tube have a filtering function, characterized in that it includes a cylindrical tube body (1), a filter screen (2), and a rib (3), and the rib (3) is located on the cylindrical tube body (1) The edge of the top opening of the test tube wall, the filter (2) is located at the bottom of the cylindrical tube body (1); the inner diameter of the test tube wall ≤ the outer diameter of the rib (3) ≤ the outer diameter of the test tube wall, the cylindrical tube body (1) The outer diameter ≤ the inner diameter of the test tube wall; the cylindrical tube body (1) can be placed in the test tube, and the rib (3) prevents the device with filtering function from falling into the test tube. 2. a kind of device that makes test tube have filtering function according to claim 1, is characterized in that, the material that makes test tube has the device of filtering function is inorganic quartz glass or PE plastics, PP plastics, PS plastics. 3. A kind of device that makes test tube have filtering function according to claim 2, is characterized in that, test tube is inorganic quartz glass test tube or PE plastic test tube, PP plastic test tube, PS plastic test tube. 4. A device for making the test tube have a filtering function according to claim 3, characterized in that the test tube has a test tube cap. 5 . A device for making the test tube have a filtering function according to claim 4 , wherein the test tube cap is a screw-type test tube cap or a buckle-type test tube cap. 6 . 6 . The device for making the test tube have a filtering function according to claim 5 , characterized in that the thickness and width of the rib ( 3 ) meet the requirements for the test tube cap to tightly cover the test tube. 7 . 7. A kind of method that makes test tube have filter function, it is characterized in that, use a kind of device that makes test tube have filter function described in claim 1-6, specifically comprise the following steps, Step 1), put the device that enables the test tube to have a filtering function into the test tube, and the rib (3) is mounted on the edge of the test tube opening; Step 2), set the filter layer (5) on the filter screen (2), the filter layer (5) is filter paper or filter cotton, then pour the liquid to be filtered (6) into the device that enables the test tube to have a filtering function, and tighten it Test tube cap. 8. A method for making a test tube have a filtering function, characterized in that, using a device for making a test tube have a filtering function according to claim 1-6, specifically comprising the following steps, Step 1), setting a filter layer (5) on the filter screen (2) of the device for making the test tube have a filter function, and the filter layer (5) is filter paper or filter cotton; Step 2), put the device with filter layer (5) to make the test tube have filtering function into the test tube, and the rib (3) is mounted on the edge of the test tube opening; Step 3), pour the liquid to be filtered (6) into the device that enables the test tube to have a filtering function, and tighten the test tube cap.