CN215917492U

CN215917492U - Chemical test tube rack convenient to place different length test tubes

Info

Publication number: CN215917492U
Application number: CN202121976964.1U
Authority: CN
Inventors: 李忠庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-03-01
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a chemical test tube rack convenient for placing test tubes of different lengths, and relates to the technical field of chemical experimental instruments. Can place the test tube of different length, make the test tube top highly uniform on the test-tube rack to be convenient for seal the test tube, prevent unrestrained and the pollution of volatilizing of the interior liquid of test tube.

Description

Chemical test tube rack convenient to place different length test tubes

Technical Field

The utility model relates to the technical field of chemical experimental instruments, in particular to a chemical test tube rack convenient for placing test tubes with different lengths.

Background

The test tube rack is the most basic experimental instrument of a chemical laboratory for placing (sometimes placing test tubes on the test tube rack to observe the phenomenon of a certain experiment) and airing the test tubes, a corresponding number of small wooden columns and small holes are attached in the test tube rack, the test tube rack is one of chemical experimental instruments, in order to enable students to know chemical reactions more intuitively, in the chemical teaching process, test tubes are used for testing, the test tube rack is needed when the test tubes are placed, the existing test tube rack for the chemical experiment is fixed in structure and cannot be adjusted in height according to the test tubes with different lengths, corresponding test tube racks are needed to be arranged for placing test tubes with different lengths, so that the test cost is increased, because the test-tube rack can not adjust according to the height of different test tubes, the top that leads to different test tubes is highly different, is difficult to seal the test tube on the test-tube rack, consequently can't avoid the unrestrained and airtight not volatile pollution that causes of liquid in the test tube.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a chemical test tube rack convenient for placing test tubes with different lengths, which can place the test tubes with different lengths to ensure that the heights of the tops of the test tubes on the test tube rack are consistent, thereby being convenient for sealing the test tubes and preventing the liquid in the test tubes from spilling and volatilizing to pollute the test tubes.

The purpose of the utility model is realized by the following technical scheme: the utility model provides a chemical test-tube rack convenient to place different length test tubes, includes cascaded base, support and test tube grip block, be fixed with the support on the cascaded base, the top of cascaded base is equipped with a plurality of boards of placing that are cascaded arrangement, the top of cascaded base is provided with the test tube grip block, the test tube grip block with support sliding connection, set up the round hole that supplies the test tube to pass on the test tube grip block, the bottom of test tube with place the board contact, cascaded base is used for making not unidimensional test tube top flush, the top of test tube grip block is provided with the closing plate, the closing plate with the top contact of test tube.

Furthermore, two elastic clamping blocks are symmetrically arranged in the round hole and are in sliding connection with the inner wall of the round hole.

Furthermore, a sliding groove is formed in the position, corresponding to the elastic clamping block, of the inner wall of the round hole, the end portion of the elastic clamping block is arranged in the sliding groove in a sliding mode, and springs are arranged on the positions, corresponding to the inner cavity of the sliding groove, of the two sides of the elastic clamping block.

Furthermore, arc-shaped clamping openings are formed in opposite side walls of the two elastic clamping blocks.

Further, the support includes bottom plate, first curb plate and second curb plate are fixed respectively the both ends of bottom plate, the top of bottom plate is fixed with stepped base, stepped base is located between first curb plate and the second curb plate, the both ends of test tube grip block respectively with first curb plate and second curb plate sliding connection.

Further, a plurality of chutes are formed in opposite side walls of the first side plate and the second side plate, and the end portions of the test tube clamping plates are arranged in the chutes in a sliding mode.

Furthermore, a sliding rod is vertically fixed at the top of the bottom plate, and the sealing plate is sleeved on the sliding rod in a sliding manner.

Furthermore, the sliding sleeve is sleeved with an adjusting sleeve, the adjusting sleeve is located below the sealing plate, the bottom of the sealing plate is in contact with the adjusting sleeve, and the adjusting sleeve is abutted to the sliding rod through a screw.

Further, the bottom of the sealing plate is provided with a cotton layer.

Furthermore, a groove is formed in the top of the placing plate, and a sponge layer is laid in the groove.

The utility model has the beneficial effects that:

1. the utility model provides a chemical test-tube rack convenient to place different length test tubes, the test tube of different length passes from the test tube grip block and falls on cascaded base, and the test tube that makes different length through cascaded base places the back top and flushes, descends the closing plate and makes it and the top contact of test tube to be convenient for seal whole test tubes through the closing plate, prevent unrestrained and the pollution that volatilizees of in vitro liquid.

2. The height-adjustable of test tube grip block can guarantee that the test tube grip block can the centre gripping test tube according to the suitable mounted position of length adjustment who places the test tube, guarantees the stability that the test tube was placed.

Drawings

FIG. 1 is a perspective view of a chemical tube rack of the present invention that facilitates the placement of test tubes of different lengths;

FIG. 2 is a front view of a chemical tube rack of the present invention that facilitates placement of test tubes of different lengths;

FIG. 3 is a top view of a tube holder plate of a chemical tube rack for holding tubes of different lengths according to the present invention;

FIG. 4 is a partial cross-sectional view of FIG. 3;

in the figure, 1-step base, 2-bracket, 3-test tube clamping plate, 4-placing plate, 5-test tube, 6-round hole, 7-sealing plate, 8-first side plate, 9-second side plate, 10-elastic clamping block, 11-sliding groove, 12-spring, 13-arc clamping opening, 14-sliding groove, 15-bottom plate, 16-sliding rod, 17-adjusting sleeve and 18-groove.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

As shown in figures 1 to 4, a chemical test tube rack convenient for placing test tubes of different lengths comprises a step base 1, a support 2 and a test tube clamping plate 3, wherein the support 2 is fixed on the step base 1, a plurality of placing plates 4 arranged in a step manner are arranged at the top of the step base 1, the test tube clamping plate 3 is arranged above the step base 1, the test tube clamping plate 3 is in sliding connection with the support 2, a round hole 6 for the test tube 5 to pass through is formed in the test tube clamping plate 3, the bottom of the test tube 5 is in contact with the placing plates 4, the step base 1 is used for enabling the tops of the test tubes 5 of different sizes to be flush, a sealing plate 7 is arranged above the test tube clamping plate 3, the sealing plate 7 is in contact with the top of the test tube 5, a plurality of test tube placing spaces with different heights are formed between the test tube clamping plate 3 and the placing plates 4, the test tube 5 with longer length is placed in the test tube space with the higher height, the test tube 5 with shorter length is placed in the test tube space with lower height, thereby selecting proper test tube space according to different lengths of the test tube 5, enabling the test tube rack to adapt to the test tubes 5 with different lengths, enabling the test tubes 5 with different lengths to pass through the test tube clamping plate 3 and fall on the stepped base 1, enabling the test tubes 5 with different lengths to be placed at the top flush through the stepped base 1, descending the sealing plate 7 to enable the test tubes 5 to be in contact with the tops of the test tubes 5, thereby being convenient for sealing all the test tubes 5 through the sealing plate 7, and preventing the liquid in the test tubes 5 from spilling and volatilizing to pollute; the height-adjustable of test tube grip block 3 can guarantee that test tube grip block 3 can centre gripping test tube 3, guarantees the stability that test tube 3 placed according to the suitable mounted position of length adjustment who places test tube 5.

Further, as shown in fig. 3 and 4, two elastic clamping blocks 10 are symmetrically arranged in the circular hole 6, the elastic clamping blocks 10 are slidably connected with the inner wall of the circular hole 6, a sliding groove 11 is formed in the position, corresponding to the elastic clamping block 10, of the inner wall of the circular hole 6, the end portion of each elastic clamping block 10 is slidably arranged in the sliding groove 11, springs 12 are arranged at the two sides of each elastic clamping block 10, corresponding to the inner cavity of the sliding groove 11, the test tube passes through the circular hole 6 and falls on the stepped base 1, the test tube 5 is clamped by the two elastic clamping blocks 10, the placing stability of the test tube is ensured, the situation that the test tube 5 shakes on the test tube rack to cause damage or liquid overflow is avoided, the specific clamping process is that, since the bottom of the test tube 5 is in arc transition, when the springs 12 are in a normal state, the distance between the two elastic clamping blocks 10 is smaller than the diameter of the outer wall of the test tube 5, and the distance between the two elastic clamping blocks 10 is larger than the diameter of the arc at the bottom of the test tube 5, thereby make the bottom of test tube 5 can insert between two elastic clamping piece 10, the circular arc of test tube 5 bottom has the guide effect simultaneously, at the in-process of the test tube of moving down, test tube 5 extrudees elastic clamping piece 10 and makes spring 12 compress, makes elastic clamping piece 10 and test tube 5 butt through the reaction force of spring 12, accomplishes the centre gripping of test tube 5; arc clamp 13 has been seted up to two elastic clamping piece 10's of test tube 5 relative lateral wall, presss from both sides the area of contact of 13 increase elastic clamping piece 10 and test tube 5 through the arc, guarantees better centre gripping effect, avoids stress concentration to damage test tube 5 simultaneously.

Further, as shown in fig. 1 and 2, the stand 2 includes a bottom plate 15, first curb plate 8 and second curb plate 9, first curb plate 8 and second curb plate 9 are fixed respectively at the both ends of bottom plate 15, bottom plate 15's top is fixed with cascaded base 1, cascaded base 1 is located between first curb plate 8 and the second curb plate 9, test tube grip block 3's both ends respectively with first curb plate 8 and second curb plate 9 sliding connection, a plurality of spouts 14 have all been seted up to first curb plate 8 and second curb plate 9 relative lateral wall, the tip of test tube grip block 3 slides and sets up in spout 14, the mountable of test tube grip block 3 is in the spout 14 of co-altitude, realize test tube grip block 3's altitude mixture control, be the horizontality after test tube grip block 3 installs the completion, make test tube grip block 3 can carry out the altitude mixture control according to the length of placing the test tube, make test tube grip block 3 to the test tube homoenergetic centre gripping of co-altitude of different length.

Further, a sliding rod 16 is vertically fixed at the top of the bottom plate 15, the sealing plate 7 is slidably sleeved on the sliding rod 16, an adjusting sleeve 17 is slidably sleeved on the sliding rod 16, the adjusting sleeve 17 is located below the sealing plate 7, the bottom of the sealing plate 7 is in contact with the adjusting sleeve 17, and the adjusting sleeve 17 is abutted to the sliding rod 16 through a screw. The height position of closing plate 7 is adjustable, and sliding seal plate 7 makes closing plate 7 seal up with the top contact of test tube 5, adjusts the height of adjusting collar 17, fixes adjusting collar 17 on slide bar 16 through the screw, and closing plate 7 supports through adjusting collar 17, avoids the whole effects of gravity of closing plate 7 to cause the damage of test tube 5 on test tube 5.

Further, the bottom of closing plate 7 is equipped with the cotton layer, improves sealed effect through the cotton layer, provides certain buffering space simultaneously, places the top of board 4 and seted up recess 18, has laid the sponge layer in the recess 18, cushions test tube 5 through the sponge layer.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A chemical test tube rack convenient for placing test tubes with different lengths is characterized by comprising a step-type base (1), a bracket (2) and a test tube clamping plate (3), a bracket (2) is fixed on the stepped base (1), a plurality of placing plates (4) which are arranged in a stepped manner are arranged at the top of the stepped base (1), a test tube clamping plate (3) is arranged above the stepped base (1), the test tube clamping plate (3) is connected with the bracket (2) in a sliding way, the test tube clamping plate (3) is provided with a round hole (6) for the test tube (5) to pass through, the bottoms of the test tubes (5) are contacted with a placing plate (4), the stepped base (1) is used for enabling the tops of the test tubes (5) with different sizes to be flush, the top of test tube grip block (3) is provided with closing plate (7), closing plate (7) with the top contact of test tube (5).

2. The chemical test tube rack convenient for placing test tubes of different lengths according to claim 1, characterized in that two elastic clamping blocks (10) are symmetrically arranged in the circular hole (6), and the elastic clamping blocks (10) are slidably connected with the inner wall of the circular hole (6).

3. The chemical test tube rack convenient for placing test tubes of different lengths according to claim 2, characterized in that a sliding groove (11) is formed in the inner wall of the round hole (6) at a position corresponding to the elastic clamping block (10), the end of the elastic clamping block (10) is slidably arranged in the sliding groove (11), and springs (12) are arranged at positions of two sides of the elastic clamping block (10) corresponding to the inner cavity of the sliding groove (11).

4. The chemical test tube rack convenient for placing test tubes with different lengths as claimed in claim 3, wherein the opposite side walls of the two elastic clamping blocks (10) are provided with arc-shaped clamping openings (13).

5. The chemical test tube rack convenient to place different length test tubes according to claim 1, characterized in that, support (2) include bottom plate (15), first curb plate (8) and second curb plate (9) are fixed respectively the both ends of bottom plate (15), the top of bottom plate (15) is fixed with cascaded base (1), cascaded base (1) is located between first curb plate (8) and second curb plate (9), the both ends of test tube grip block (3) respectively with first curb plate (8) and second curb plate (9) sliding connection.

6. The chemical test tube rack convenient for placing test tubes of different lengths according to claim 5, wherein the opposite side walls of the first side plate (8) and the second side plate (9) are provided with a plurality of sliding grooves (14), and the ends of the test tube clamping plates (3) are slidably arranged in the sliding grooves (14).

7. The chemical test tube rack convenient for placing test tubes of different lengths as claimed in claim 5, wherein a sliding rod (16) is vertically fixed on the top of the bottom plate (15), and the sealing plate (7) is slidably sleeved on the sliding rod (16).

8. The chemical test tube rack convenient for placing test tubes of different lengths according to claim 7, wherein an adjusting sleeve (17) is slidably sleeved on the sliding rod (16), the adjusting sleeve (17) is positioned below the sealing plate (7), the bottom of the sealing plate (7) is in contact with the adjusting sleeve (17), and the adjusting sleeve (17) is abutted to the sliding rod (16) through a screw.

9. A chemical test tube rack facilitating the placement of test tubes of different lengths according to claim 7, wherein the bottom of the sealing plate (7) is provided with a cotton layer.

10. The chemical test tube rack convenient for placing test tubes of different lengths according to claim 1, wherein a groove (18) is formed in the top of the placing plate (4), and a sponge layer is laid in the groove (18).