Test tube rack for experiment teaching

Abstract

The utility model relates to the technical field of test tube racks, and discloses a test tube rack for experiment teaching, which comprises a box body, the outer wall of the box body is rotatably connected with a handle, the outer wall of the handle is fixedly connected with a worm, the outer wall of the worm is rotatably connected inside the box body, the inside of the box body is rotatably connected with a worm gear, and the worm gear is fixedly connected with the worm. The outer wall of the worm is meshed with the outer wall of the worm wheel, a sleeve is rotatably connected to the upper surface of the worm wheel, an upper fixing plate is fixedly connected to the lower surface of the worm wheel, a fixing column is fixedly connected to the interior of the upper fixing plate, a rotating shaft is fixedly connected to the upper surface of the clamping block, and a connecting rod is fixedly connected to the outer wall of the clamping block. The lower surface of the connecting rod is rotationally connected with a sliding rod, and the outer wall of the sliding rod is slidably connected with a connecting seat. According to the self-centering clamping device, when the upper fixing plate and the lower fixing plate rotate, the connecting rods are pulled to move through the rotating shafts, so that the effect of driving the clamping blocks to rotate is achieved, and the effect of self-centering clamping of cylindrical test tubes is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of test tube racks, in particular to a test tube rack for experimental teaching. Background Art

[0002] Experimental teaching occupies an important position in various disciplines, especially in science and engineering majors. A new type of test tube rack for experimental teaching came into being. Its design background is derived from the needs of engineering professional certification, the development of modern educational technology, the improvement of safety performance, and saving space and convenient operation. This test tube rack aims to improve the quality of experimental teaching and cultivate students' practical ability and innovative consciousness. At the same time, it has the advantages of stability, easy adjustment, and small space occupation. It helps to reduce safety hazards in the experiment process, meet the needs of integrating modern educational technology into experimental teaching, and provide a more convenient and efficient operation experience for experimental teaching.

[0003] After searching, the publication number CN208695066U discloses a test tube rack for experimental teaching, including a heating device, a test tube rack device is installed on the left side of the heating device, the heating device is in contact with the glass box device, the heating device includes a bottom plate, a first support column, an anti-sliding block, a lower clamping block, a first test tube, an alcohol lamp, an upper clamping block, a lower groove, a spring and an upper groove, the right end of the bottom plate is fixedly installed with the first support column, the upper end of the first support column is slidably sleeved with an upper clamping block and a lower clamping block, the first support column is fixedly installed with an anti-sliding block, the upper clamping block is provided with an upper groove, the interior of the upper groove is clamped with the first test tube, the lower clamping block is provided with a lower groove, the interior of the lower groove is clamped with the first test tube. The test tube rack for experimental teaching is easy to take and use, and the sponge layer can protect the bottom of the test tube; the design of the glass box device can prevent dust from falling into the test tube to avoid affecting the experimental effect. Although the application realizes the rapid clamping and fixing of the test tube by the cooperation of the upper clamping block and the lower clamping block, it does not take into account that the test tube is usually cylindrical and the upper and lower clamping blocks alone cannot achieve the effect of centering the test tube, resulting in the problem of the test tube being offset during clamping. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a test tube rack for experimental teaching, which is an improvement. The prior art does not take into account that the test tube is usually cylindrical, and the test tube cannot be centered only by the upper and lower clamping blocks, and there is a problem that the test tube is offset when clamped.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a test tube rack for experimental teaching, comprising a box body, the outer wall of the box body is rotatably connected to a handle, the outer wall of the handle is fixedly connected to a worm, the outer wall of the worm is rotatably connected to the inside of the box body, the inside of the box body is rotatably connected to a worm wheel, the outer wall of the worm is meshed with the outer wall of the worm wheel, the upper surface of the worm wheel is rotatably connected to a sleeve, the lower surface of the worm wheel is fixedly connected to an upper fixing plate, the inside of the upper fixing plate is fixedly connected to a fixing column, the lower surface of the fixing column is fixedly connected to a fixing block, the lower surface of the fixing block is fixedly connected to a lower fixing plate, the outer wall of the lower fixing plate is rotatably connected to the inside of the box body, the upper surface of the lower fixing plate is rotatably connected to a clamping block, the upper surface of the clamping block is fixedly connected to a rotating shaft, the outer wall of the rotating shaft is rotatably connected to the inside of the upper fixing plate, the outer wall of the clamping block is fixedly connected to a connecting rod, the lower surface of the connecting rod is rotatably connected to a sliding rod, the outer wall of the sliding rod is slidably connected to a connecting seat, and an auxiliary component is arranged inside the sleeve.

[0006] Furthermore, the auxiliary component comprises a tapered tube, the outer wall of the tapered tube is fixedly connected to the inner wall of the sleeve, and the interior of the tapered tube is slidably connected with a tube body.

[0007] Furthermore, a water tank is fixedly connected to the interior of the box body, and a sewage tank is fixedly connected to the interior of the box body.

[0008] Furthermore, a booster pump is arranged inside the water tank, and an output end of the booster pump is fixedly connected to a rectangular tube.

[0009] Furthermore, a partition box is fixedly connected to the outer wall of the rectangular tube, and a nozzle is fixedly connected to the outer wall of the rectangular tube.

[0010] Furthermore, a water pipe is fixedly connected to the lower surface of the partition box, and the lower surface of the water pipe is fixedly connected to the upper surface of the sewage tank.

[0011] Furthermore, an activated carbon plate is fixedly connected to the inner wall of the sewage tank, a water outlet pipe is fixedly connected to the outer wall of the sewage tank, and a valve is provided on the outer wall of the water outlet pipe.

[0012] Furthermore, a water inlet pipe is fixedly connected to the outer wall of the box body, a box door is arranged inside the box body, and a handle is fixedly connected to the outer wall of the box door.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the transmission of the worm and the worm wheel is used to drive the upper fixed plate to rotate and self-lock. When the upper and lower fixed plates rotate, the connecting rod is pulled to move by the rotating shaft, thereby driving the clamping block to rotate. Furthermore, through the cooperation of the three clamping blocks, the self-centering clamping effect of the cylindrical test tube is achieved, which solves the problem that the test tube is easily offset during the clamping process and improves the practicality of the device.

[0015] 2. In the utility model, cleaning liquid is added to the water storage tank through the water inlet pipe, thereby achieving the effect of storing the cleaning liquid in the tank body, pumping the cleaning liquid into the rectangular tube through the booster pump, and diverting the cleaning liquid through the rectangular tube, thereby achieving the effect of spraying the cleaning liquid from multiple nozzles to flush the test tube, and through the partition box and the water pipe, the sewage is returned into the sewage tank, thereby achieving the effect of collecting sewage, solving the problem of sewage containing chemical substances polluting the environment and endangering users, and improving the convenience and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional result diagram of a test tube rack for experimental teaching proposed by the utility model;

[0017] Figure 2 This is a cross-sectional view of a test tube rack for experimental teaching proposed by the utility model;

[0018] Figure 3 This is a result diagram of a clamping block of a test tube rack for experimental teaching proposed by the utility model;

[0019] Figure 4 The utility model provides a cross-sectional view of a water storage tank of a test tube rack for experimental teaching.

[0020] Legend:

[0021] 1. Box body; 2. Handle; 3. Worm; 4. Worm wheel; 5. Sleeve; 6. Tapered tube; 7. Upper fixed plate; 8. Fixed column; 9. Fixed block; 10. Lower fixed plate; 11. Clamping block; 12. Rotating shaft; 13. Connecting rod; 14. Sliding rod; 15. Connecting seat; 16. Tube body; 17. Water storage tank; 18. Booster pump; 19. Rectangular tube; 20. Partition box; 21. Nozzle; 22. Water pipe; 23. Sewage tank; 24. Activated carbon plate; 25. Water outlet pipe; 26. Valve; 27. Water inlet pipe; 28. Box door; 29. ​​Handle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-3 The utility model provides an embodiment: a test tube rack for experimental teaching, including a box body 1, the outer wall of the box body 1 is rotatably connected to a handle 2, the outer wall of the handle 2 is fixedly connected to a worm 3, the outer wall of the worm 3 is rotatably connected to the inside of the box body 1, the inside of the box body 1 is rotatably connected to a worm wheel 4, the outer wall of the worm 3 is meshed with the outer wall of the worm wheel 4, the upper surface of the worm wheel 4 is rotatably connected to a sleeve 5, the lower surface of the worm wheel 4 is fixedly connected to an upper fixing plate 7, the inner part of the upper fixing plate 7 is fixedly connected to a fixing column 8, and the lower surface of the fixing column 8 is fixedly connected to A fixing block 9, the lower surface of which is fixedly connected to a lower fixing plate 10, the outer wall of which is rotatably connected to the inside of the box body 1, the upper surface of which is rotatably connected to a clamping block 11, the upper surface of which is fixedly connected to a rotating shaft 12, the outer wall of which is rotatably connected to the inside of the upper fixing plate 7, the outer wall of which is fixedly connected to a connecting rod 13, the lower surface of which is rotatably connected to a sliding rod 14, the outer wall of which is slidably connected to a connecting seat 15, and an auxiliary component is provided inside the sleeve 5.

[0024] Specifically, the clamping block 11 should be made of rubber or silicone to avoid the test tube from breaking when clamping. When the connecting rod 13 drives the clamping block 11 to rotate, the clamping block 11 rotates around the rotating shaft 12, and the rotating shaft 12 and the clamping block 11 form an eccentric wheel, thereby changing the size of the gap between the three clamping blocks 11 to achieve the clamping effect. Moreover, because the movement of the three clamping blocks 11 is a circular motion, the effect of centering the test tube is achieved.

[0025] Reference Figure 2 and Figure 4 The auxiliary component includes a conical tube 6, the outer wall of the conical tube 6 is fixedly connected to the inner wall of the sleeve 5, and the inside of the conical tube 6 is slidably connected to the tube body 16; the inside of the box body 1 is fixedly connected to the water tank 17, and the inside of the box body 1 is fixedly connected to the sewage tank 23; the inside of the water tank 17 is provided with a booster pump 18, and the output end of the booster pump 18 is fixedly connected to a rectangular tube 19; the outer wall of the rectangular tube 19 is fixedly connected to a partition box 20, and the outer wall of the rectangular tube 19 is fixedly connected to a nozzle 21.

[0026] Specifically, the test tubes usually need to be cleaned after use to ensure that they are clean. Manual cleaning not only cannot ensure the quality of cleaning, but may also cause skin burns due to irritating experimental residues, which is not conducive to the safety of the experiment. The top size of the nozzle 21 should be small to ensure that test tubes of various sizes can be mounted on the outside of the nozzle 21 to rinse the inside of the test tubes.

[0027] Reference Figure 2 and Figure 4 The lower surface of the partition box 20 is fixedly connected with a water pipe 22, and the lower surface of the water pipe 22 is fixedly connected to the upper surface of the sewage tank 23; the inner wall of the sewage tank 23 is fixedly connected with an activated carbon plate 24, the outer wall of the sewage tank 23 is fixedly connected with a water outlet pipe 25, and the outer wall of the water outlet pipe 25 is provided with a valve 26; the outer wall of the box body 1 is fixedly connected with a water inlet pipe 27, and a box door 28 is provided inside the box body 1, and the outer wall of the box door 28 is fixedly connected with a handle 29.

[0028] Specifically, an opening with a diameter larger than that of the nozzle 21 is provided at the upper end of the separation box 20 where the nozzle 21 is placed, so that the sewage after flushing can flow into the interior of the separation box 20 through the opening, thereby preventing the sewage from flowing back from the nozzle 21 into the booster pump 18 and polluting the pump body. The sewage can be simply filtered and adsorbed by the activated carbon plate 24 to remove some harmful substances. Different filter elements can also be replaced according to the properties of the experimental residues to achieve harmless treatment of the sewage.

[0029] Working principle: When a test tube rack for experimental teaching is needed, first insert the tube body 16 into the sleeve 5 upside down, and the conical tube 6 guides the tube body 16 until the bottom end of the tube body 16 contacts the nozzle 21. At this time, turn the handle 2, the handle 2 drives the worm 3 to rotate, and then drives the worm wheel 4 to rotate through the worm 3, so that the worm wheel 4 drives the upper fixed plate 7 to rotate, and the upper fixed plate 7 drives the lower fixed plate 10 to rotate through the fixed column 8 and the fixed block 9. At this time, the upper fixed plate 7 pulls the clamping block 11 through the rotating shaft 12, and then drives the connecting rod 13 to rotate through the clamping block 11, and the connecting rod 13 drives the sliding rod 14 in the connecting seat 15. Movement is performed, thereby achieving the effect of centering and clamping the tube body 16, and cleaning liquid is added to the water storage tank 17 through the water inlet pipe 27, and the booster pump 18 is started. The booster pump 18 pumps the cleaning liquid into the rectangular tube 19. After the cleaning liquid is diverted by the rectangular tube 19, it is sprayed from multiple nozzles 21 to flush the inside of the tube body 16. The sewage after flushing flows into the partition box 20, and then flows into the sewage tank 23 through the water pipe 22. The activated carbon plate 24 performs preliminary filtering and adsorption on the harmful substances in the sewage, and the sewage is discharged through the outlet pipe 25. The flushing mechanism can be inspected and maintained by opening the box door 28 through the handle 29.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A test tube rack for experimental teaching, comprising a box (1), characterized in that: The outer wall of the box body (1) is rotatably connected to a handle (2), the outer wall of the handle (2) is fixedly connected to a worm (3), the outer wall of the worm (3) is rotatably connected to the inside of the box body (1), the inside of the box body (1) is rotatably connected to a worm wheel (4), the outer wall of the worm (3) is meshed with the outer wall of the worm wheel (4), the upper surface of the worm wheel (4) is rotatably connected to a sleeve (5), the lower surface of the worm wheel (4) is fixedly connected to an upper fixing plate (7), the interior of the upper fixing plate (7) is fixedly connected to a fixing column (8), the lower surface of the fixing column (8) is fixedly connected to a fixing block (9), the lower surface of the fixing block (9) A lower fixing plate (10) is fixedly connected to the surface, the outer wall of the lower fixing plate (10) is rotatably connected to the inside of the box body (1), the upper surface of the lower fixing plate (10) is rotatably connected to a clamping block (11), the upper surface of the clamping block (11) is fixedly connected to a rotating shaft (12), the outer wall of the rotating shaft (12) is rotatably connected to the inside of the upper fixing plate (7), the outer wall of the clamping block (11) is fixedly connected to a connecting rod (13), the lower surface of the connecting rod (13) is rotatably connected to a sliding rod (14), the outer wall of the sliding rod (14) is slidably connected to a connecting seat (15), and an auxiliary component is arranged inside the sleeve (5).

2. A test tube rack for experimental teaching according to claim 1, characterized in that: The auxiliary component comprises a conical tube (6), the outer wall of the conical tube (6) is fixedly connected to the inner wall of the sleeve (5), and the interior of the conical tube (6) is slidably connected to a tube body (16).

3. The test tube rack for experimental teaching according to claim 1, characterized in that: A water storage tank (17) is fixedly connected to the interior of the box body (1), and a sewage tank (23) is fixedly connected to the interior of the box body (1).

4. A test tube rack for experimental teaching according to claim 3, characterized in that: A booster pump (18) is arranged inside the water storage tank (17), and a rectangular tube (19) is fixedly connected to the output end of the booster pump (18).

5. A test tube rack for experimental teaching according to claim 4, characterized in that: The outer wall of the rectangular tube (19) is fixedly connected to a partition box (20), and the outer wall of the rectangular tube (19) is fixedly connected to a spray head (21).

6. A test tube rack for experimental teaching according to claim 5, characterized in that: A water pipe (22) is fixedly connected to the lower surface of the partition box (20), and the lower surface of the water pipe (22) is fixedly connected to the upper surface of the sewage tank (23).

7. A test tube rack for experimental teaching according to claim 6, characterized in that: An activated carbon plate (24) is fixedly connected to the inner wall of the sewage tank (23), a water outlet pipe (25) is fixedly connected to the outer wall of the sewage tank (23), and a valve (26) is provided on the outer wall of the water outlet pipe (25).

8. The test tube rack for experimental teaching according to claim 1, characterized in that: The outer wall of the box body (1) is fixedly connected to a water inlet pipe (27), a box door (28) is arranged inside the box body (1), and the outer wall of the box door (28) is fixedly connected to a handle (29).

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