Classification test tube rack for junior high school chemistry laboratory

Abstract

The invention relates to the technical field of chemical experiment tools, and discloses a classification test tube rack for junior high school chemistry laboratories, which comprises a first fixing plate, one side of the top of the first fixing plate is fixedly connected with a third fixing plate, one side of the third fixing plate is slidably connected with a second fixing block, and one side of the second fixing block is provided with a fourth groove. An adjusting mechanism is arranged outside the second fixing block, a test tube rack is fixedly connected to one side of the second fixing block, a first fixing rod is slidably connected to the inner side wall of the test tube rack, a threaded rod is fixedly connected to the interior of the second fixing plate, and a fixing mechanism is arranged outside the threaded rod. The problems that in the prior art, when classification test tube racks are used in a laboratory, most of the test tube racks are consistent in height, so that test tubes on the rear side are easily blocked by test tubes on the front side, and the sizes of different test tubes are not necessarily the same, so that the test tubes need to be fixed are solved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical experiment tools, in particular to a classified test tube rack for junior high school chemistry laboratories. Background Art

[0002] A test tube rack is a device used to support and fix test tubes in laboratory scientific research. It is usually made of metal or plastic, which has stability and corrosion resistance. The bottom of the test tube rack is usually a flat base, which is used to give the entire rack a stable support. The base is usually heavy to ensure that the test tube rack will not easily tip over when in use; the support of the test tube rack is composed of columns and beams. The columns are fixed vertically to the base to support the installation of the beams. The beams are horizontal bars connected above the columns, and their shape and length can be adjusted as needed to accommodate different numbers and sizes of test tubes; the clamps on the test tube rack are components used to fix test tubes. They are usually located on the beams and can be adjusted by knobs, screws or other mechanical means. The clamps can be different types such as metal clamps, spring clamps or plastic clamps to meet the fixing needs of different types of test tubes. The use of test tube racks helps to organize, place and fix test tubes in the laboratory, improve the stability and safety of test tubes, and avoid tipping and breakage of test tubes. They are usually used for experimental operations in the fields of analytical chemistry, biochemistry, molecular biology, microbiology, etc., so that researchers can easily carry out various experimental steps such as reagent mixing, reaction and temperature control. It should be noted that when using test tube racks, laboratory safety regulations must be followed, and the test tube racks must be adjusted and fixed correctly to ensure the stability and safety of the test tubes. In addition, according to the needs of the experiment, choose a test tube rack of appropriate size and material, and keep it clean and in good condition to extend its service life.

[0003] At present, in the existing technology, when the classified test tube racks are used in the laboratory, the general test tube racks are mostly arranged in a row and have the same height, so that the test tubes on the rear side are easily blocked by the test tubes on the front side, resulting in the inability to quickly get the appropriate test tubes. Moreover, since the sizes of different test tubes are not necessarily the same, they need to be fixed. Therefore, the present invention proposes a classified test tube rack for junior high school chemistry laboratories. Summary of the invention

[0004] In view of the disadvantages that when a classified test tube rack is used in a laboratory in the prior art, most of the test tube racks have the same height, so that the test tubes on the rear side are easily blocked by the test tubes on the front side, and because the sizes of different test tubes are not necessarily the same, they need to be fixed. The present invention provides a classified test tube rack for a junior high school chemistry laboratory, which has the advantages of being able to change the height of the test tube rack and being able to fix test tube racks of different sizes.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The cam is provided with a plurality of locking plates, the plurality of locking plates having the plurality of locking plates being locked together and the plurality of locking plates being locked together.

[0007] Preferably, the adjusting mechanism includes the third groove being opened on one side of the third fixing plate, so that the third groove can better fix the second fixing rod, thereby better fixing the whole, the second spring and the second fixing block are fixedly connected, so that the second fixing block can better fix the second spring, the first sliding block is fixedly connected to one side of the second spring, so that the first sliding block can be subjected to a force generated by the compression of the second spring when moving, the first sliding block and the fourth groove are slidably connected, so that the first sliding block can slide better, the second fixing rod and the first sliding block are fixedly connected, so that when the first sliding block moves, the second fixing rod can be better driven to move, and the third fixing rod is fixedly connected to one side of the first sliding block, so that when the third fixing rod is pulled to move, the first sliding block can be driven to move.

[0008] Preferably, the fixing mechanism includes the second sliding block being threadedly connected to the outer side wall of the threaded rod, so that the No. 2 sliding block can move better, the No. 2 fixing ring and the No. 2 sliding block are fixedly connected, so that the No. 2 fixing ring can be better fixed, one side of the telescopic rod is fixedly connected to one side of the No. 2 fixing ring, so that the telescopic rod can be well fixed, the No. 3 spring and the No. 2 fixing ring are fixedly connected, so that the No. 3 spring can be better fixed, the No. 3 spring is sleeved on the outer side wall of the telescopic rod, so that the telescopic rod and the No. 3 spring can move simultaneously, the No. 3 spring and the No. 3 fixing block are fixedly connected, so that the No. 3 fixing block can be better fixed, the telescopic rod is fixedly connected to one side of the No. 3 fixing block, so that the telescopic rod can drive the No. 3 fixing block to move, and one side of the No. 3 fixing block is fixedly connected to the No. 1 fixing ring, so that the No. 3 fixing block can drive the No. 1 fixing ring to move.

[0009] Preferably, a handle No. 1 is fixedly connected to the top of the No. 1 fixing rod, so that the movement of the handle No. 1 can drive the No. 1 fixing rod to move.

[0010] Preferably, a groove No. 1 is provided on one side of the test tube rack so that the test tube can be better fixed.

[0011] Preferably, a No. 2 groove is provided on one side of the No. 1 fixing plate so that the test tube can be better fixed, a No. 1 spring is fixedly connected to one side of the top of the No. 2 groove so that the No. 1 spring can be better fixed, and a No. 1 fixing block is fixedly connected to one side of the No. 1 spring so that the No. 1 fixing block can move due to the compressed force of the No. 1 spring.

[0012] Preferably, the size of the opening of the No. 3 groove is adapted to the size of the No. 2 fixing rod, so that the No. 3 groove can better fix the No. 2 fixing rod, thereby better fixing the whole, and the number of the No. 3 grooves is multiple groups and evenly distributed.

[0013] Preferably, the number of the No. 1 fixing ring and the No. 2 fixing ring are both two groups, so that they can better fix the test tube and are evenly distributed.

[0014] Beneficial effects:

[0015] 1. The classified test tube rack for junior high school chemistry laboratory uses an adjustment mechanism to pull the No. 3 fixing rod to take out the No. 2 fixing rod, and pull the No. 2 fixing block to move up and down, so that the test tube rack can be adjusted in height, thereby improving the use efficiency of the test tube rack.

[0016] 2. This classification test tube rack for junior high school chemistry laboratories uses a No. 1 handle to drive the rack to move, thereby driving the gear to rotate, causing the threaded rod to rotate, driving the fixing mechanism to fix the test tube, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of a classified test tube rack for a junior high school chemistry laboratory of the present invention;

[0018] Figure 2 This is a schematic diagram of the first part of a classified test tube rack for a junior high school chemistry laboratory of the present invention;

[0019] Figure 3 This is a schematic diagram of the second part of a classified test tube rack for a junior high school chemistry laboratory of the present invention;

[0020] Figure 4 for Figure 1 An enlarged schematic diagram of a classified test tube rack A for a junior high school chemistry laboratory of the present invention;

[0021] Figure 5 for Figure 2 An enlarged schematic diagram of a classified test tube rack B for a junior high school chemistry laboratory of the present invention;

[0022] Figure 6 for Figure 3 The present invention discloses an enlarged schematic diagram of a classified test tube rack C for a junior high school chemistry laboratory.

[0023] In the figure: 1. Fixed plate No. 1; 2. Test tube rack; 3. Fixed plate No. 2; 4. Groove No. 1; 5. Handle No. 1; 6. Fixed plate No. 3; 7. Fixed rod No. 1; 8. Rack; 9. Gear; 10. Threaded rod; 11. Groove No. 2; 12. Fixed block No. 1; 13. Spring No. 1; 14. Groove No. 3; 15. Fixed rod No. 2; 16. Sliding block No. 1; 17. Groove No. 4; 18. Spring No. 2; 19. Fixed block No. 2; 20. Fixed rod No. 3; 21. Sliding block No. 2; 22. Fixed block No. 3; 23. Fixed ring No. 1; 24. Fixed ring No. 2; 25. Telescopic rod; 26. Spring No. 3. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1

[0026] See also Figure 1-6 A classified test tube rack for a junior high school chemistry laboratory comprises a No. 1 fixed plate 1, a No. 3 fixed plate 6 is fixedly connected to one side of the top of the No. 1 fixed plate 1, a No. 2 fixed block 19 is slidably connected to one side of the No. 3 fixed plate 6, a No. 4 groove 17 is opened on one side of the No. 2 fixed block 19, an adjustment mechanism is arranged outside the No. 2 fixed block 19, the adjustment mechanism comprises a No. 3 groove 14, a No. 2 fixed rod 15, a No. 1 sliding block 16, a No. 2 spring 18 and a No. 3 fixed rod 20, a No. 2 fixed block 19 is fixedly connected to a test tube rack 2, and a test tube A No. 1 fixing rod 7 is slidably connected to the inner wall of the rack 2, a rack 8 is fixedly connected to the bottom of the No. 1 fixing rod 7, a No. 2 fixing plate 3 is fixedly connected to one side of the test tube rack 2, a threaded rod 10 is fixedly connected to the inside of the No. 2 fixing plate 3, a gear 9 is fixedly connected to the outer wall of the threaded rod 10, the rack 8 and the gear 9 are meshed, and a fixing mechanism is arranged on the outside of the threaded rod 10, which includes a No. 2 sliding block 21, a No. 3 fixing block 22, a No. 1 fixing ring 23, a No. 2 fixing ring 24, a telescopic rod 25 and a No. 3 spring 26.

[0027] When it is necessary to use the classified test tube rack for chemical laboratories, pull the No. 3 fixing rod 20 to move the No. 1 sliding block 16 in the No. 4 groove 17. At this time, the No. 2 spring 18 generates a force due to compression until the No. 2 fixing rod 15 is completely removed from the No. 3 groove 14. Stop moving the No. 3 fixing rod 20 and move the No. 2 fixing block 19 to move the No. 2 fixing block 19 to move the test tube rack 2. After adjusting to a suitable position, stop moving the No. 2 fixing block 19 and slowly release the No. 3 fixing rod 20. The No. 1 sliding block 16 will move. At this time, the No. 1 sliding block 16 will be subjected to a force generated by the No. 2 spring 18 due to the previous compression until the No. 2 fixing rod 15 can be inserted into the corresponding No. 3 groove 14. This improves the use efficiency of the test tube rack 2 and puts the test tube from the No. 1 groove 4 into the When the bottom of the test tube reaches the No. 2 groove 11, the No. 1 fixing block 12 will give a buffer force to the bottom of the test tube to make it more stable. At this time, the No. 1 spring 13 will also generate a force due to being compressed, pulling the No. 1 handle 5, so that the No. 1 handle 5 can drive the No. 1 fixing rod 7 to move. The movement of the No. 1 fixing rod 7 will also drive the rack 8 to move. The movement of the rack 8 will drive the gear 9 to rotate. The rotation of the gear 9 will also drive the threaded rod 10 to rotate. When the threaded rod 10 rotates, it will drive the No. 2 sliding block 21 to move until the test tube is fixed. Stop pulling the No. 1 handle 5. At this time, the No. 1 fixing ring 23 will fix the test tube. At the same time, the telescopic rod 25 generates a force due to being compressed. This force pushes it to better fix the test tube, thereby improving the practicability of the device.

[0028] Embodiment 2

[0029] See also Figure 1-6On the basis of the first embodiment, the adjustment mechanism includes a third groove 14 opened on one side of the third fixing plate 6, so that the third groove 14 can better fix the second fixing rod 15, thereby better fixing the whole, the second spring 18 and the second fixing block 19 are fixedly connected, so that the second fixing block 19 can better fix the second spring 18, the first sliding block 16 is fixedly connected to one side of the second spring 18, so that the first sliding block 16 can be subjected to a force generated by the compression of the second spring 18 when moving, the first sliding block 16 and the fourth groove 17 are slidably connected, so that the first sliding block 16 can slide better, and the second fixing rod 15 and the first sliding block 16 are fixedly connected. The first sliding block 16 is connected to the second fixing rod 15 when it moves, and the third fixing rod 20 is fixedly connected to one side of the first sliding block 16, so that the first sliding block 16 can be driven to move when the third fixing rod 20 is pulled to move; the fixing mechanism includes a second sliding block 21 threadedly connected to the outer wall of the threaded rod 10, so that the second sliding block 21 can be better moved, the second fixing ring 24 and the second sliding block 21 are fixedly connected, so that the second fixing ring 24 can be better fixed, one side of the telescopic rod 25 is fixedly connected to one side of the second fixing ring 24, so that the telescopic rod 25 can be well fixed, and the third spring 26 and the second fixing ring 24 are fixedly connected. The third spring 26 is fixedly connected so that the third spring 26 can be better fixed. The third spring 26 is sleeved on the outer wall of the telescopic rod 25 so that the telescopic rod 25 and the third spring 26 can move at the same time. The third spring 26 and the third fixed block 22 are fixedly connected so that the third fixed block 22 can be better fixed. The telescopic rod 25 is fixedly connected to one side of the third fixed block 22 so that the telescopic rod 25 can drive the third fixed block 22 to move. One side of the third fixed block 22 and the first fixed ring 23 are fixedly connected so that the third fixed block 22 can drive the first fixed ring 23 to move. The top of the first fixed rod 7 is fixedly connected to the first handle 5 so that the movement of the first handle 5 can drive the first fixed rod 7 to move. Movement; a No. 1 groove 4 is provided on one side of the test tube rack 2, so that the test tube can be better fixed; a No. 2 groove 11 is provided on one side of the No. 1 fixing plate 1, so that the test tube can be better fixed, and a No. 1 spring 13 is fixedly connected to one side of the top of the No. 2 groove 11, so that the No. 1 spring 13 can be better fixed, and a No. 1 fixing block 12 is fixedly connected to one side of the No. 1 spring 13, so that the No. 1 fixing block 12 can move due to the compressed force of the No. 1 spring 13; the size of the opening of the No. 3 groove 14 is adapted to the size of the No. 2 fixing rod 15, so that the No. 3 groove 14 can better fix the No. 2 fixing rod 15, thereby better fixing the whole, and the number of the No. 3 grooves 14 is multiple groups and is evenly distributed;The number of the No. 1 fixing ring 23 and the No. 2 fixing ring 24 are both two groups, so that the test tubes can be better fixed and are evenly distributed. ;

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A classified test tube rack for junior high school chemistry laboratory, comprising a No. 1 fixing plate (1), characterized in that: A No. 3 fixing plate (6) is fixedly connected to one side of the top of the No. 1 fixing plate (1), a No. 2 fixing block (19) is slidably connected to one side of the No. 3 fixing plate (6), a No. 4 groove (17) is provided on one side of the No. 2 fixing block (19), an adjustment mechanism is arranged outside the No. 2 fixing block (19), the adjustment mechanism comprises a No. 3 groove (14), a No. 2 fixing rod (15), a No. 1 sliding block (16), a No. 2 spring (18) and a No. 3 fixing rod (20), a No. 2 fixing block (19) is fixedly connected to one side of the No. 2 fixing block (19), and a No. 1 fixing rod is slidably connected to the inner side wall of the test tube rack (2). (7), a rack (8) is fixedly connected to the bottom of the No. 1 fixing rod (7), a No. 2 fixing plate (3) is fixedly connected to one side of the test tube rack (2), a threaded rod (10) is fixedly connected to the inside of the No. 2 fixing plate (3), a gear (9) is fixedly connected to the outer wall of the threaded rod (10), the rack (8) and the gear (9) are meshed, and a fixing mechanism is arranged outside the threaded rod (10), the fixing mechanism comprises a No. 2 sliding block (21), a No. 3 fixing block (22), a No. 1 fixing ring (23), a No. 2 fixing ring (24), a telescopic rod (25) and a No. 3 spring (26).

2. The classified test tube rack for junior high school chemistry laboratory according to claim 1, characterized in that: The adjustment mechanism comprises the third groove (14) being opened on one side of the third fixed plate (6), the second spring (18) being fixedly connected to the second fixed block (19), the first sliding block (16) being fixedly connected to one side of the second spring (18), the first sliding block (16) being slidably connected to the fourth groove (17), the second fixed rod (15) being fixedly connected to the first sliding block (16), and the third fixed rod (20) being fixedly connected to one side of the first sliding block (16).

3. The classified test tube rack for junior high school chemistry laboratory according to claim 1, characterized in that: The fixing mechanism comprises the second sliding block (21) being threadedly connected to the outer side wall of the threaded rod (10), the second fixing ring (24) being fixedly connected to the second sliding block (21), one side of the telescopic rod (25) being fixedly connected to one side of the second fixing ring (24), the third spring (26) being fixedly connected to the second fixing ring (24), the third spring (26) being sleeved on the outer side wall of the telescopic rod (25), the third spring (26) being fixedly connected to the third fixing block (22), the telescopic rod (25) being fixedly connected to one side of the third fixing block (22), and one side of the third fixing block (22) being fixedly connected to the first fixing ring (23).

4. The classified test tube rack for junior high school chemistry laboratory according to claim 1, characterized in that: The top of the No. 1 fixing rod (7) is fixedly connected to a No. 1 handle (5).

5. The classified test tube rack for junior high school chemistry laboratory according to claim 1, characterized in that: A first groove (4) is provided on one side of the test tube rack (2).

6. The classified test tube rack for junior high school chemistry laboratory according to claim 1, characterized in that: A No. 2 groove (11) is provided on one side of the No. 1 fixing plate (1), a No. 1 spring (13) is fixedly connected to one side of the top of the No. 2 groove (11), and a No. 1 fixing block (12) is fixedly connected to one side of the No. 1 spring (13).

7. The classified test tube rack for junior high school chemistry laboratory according to claim 1, characterized in that: The size of the opening of the No. 3 groove (14) is matched with the size of the No. 2 fixing rod (15), and the number of the No. 3 grooves (14) is multiple and evenly distributed.

8. The classified test tube rack for junior high school chemistry laboratory according to claim 1, characterized in that: The number of the first fixing ring (23) and the number of the second fixing ring (24) are both two groups, and they are evenly distributed.

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