Multifunctional teaching equipment for experiment

Abstract

The invention provides multifunctional teaching equipment for experiments, and relates to the technical field of teaching equipment.The multifunctional teaching equipment comprises a plurality of top sleeves installed on two spacing boards at equal intervals, a rotating disc is rotationally installed in each top sleeve, and a synchronous disc is coaxially installed on each rotating disc; a plurality of fixing rods are fixedly installed on the top sleeve, a plurality of sealing plates are rotatably installed on the synchronous disc, expansion grooves are formed in the sealing plates, and the fixing rods are slidably connected into the expansion grooves; the experimental multifunctional teaching equipment achieves the remarkable technical effects through innovative structural design: the equipment adopts a multi-layer sealing structure, rapid sealing of a test tube is achieved through cooperation of the top sleeve and the sealing plate, and the sealing reliability is ensured through a synchronous opening and closing mechanism of the sealing plate; in the aspect of a fixing system, through the combined design of a spiral strip and a middle ball, double limiting of the test tube is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching equipment, and more specifically, it relates to a multi-functional teaching equipment for experiments. Background Art

[0002] In the prior art, as an important tool for laboratory teaching, the design and function of the multi-functional teaching equipment for experiments directly affect the teaching effect and experimental safety. Especially during the experimental process involving test tube operations, although the existing operating table can basically meet the fixing requirements of test tubes, its fixing mechanism is often too simple and can only provide basic support functions. This design cannot effectively solve the sealing problem of test tubes during the experiment, making the experimental substances in the test tubes easily come into contact with the external environment.

[0003] In addition, the problem of ineffective sealing of test tubes not only causes experimental samples to be contaminated by the external environment but also may lead to the leakage of volatile substances, polluting the experimental environment. This design defect seriously affects the accuracy and reliability of the experiment, and at the same time increases the potential safety hazards during the teaching experiment. Especially when conducting some experiments that require long-term observation or involve volatile and easily polluted substances, this deficiency of the existing equipment reduces the convenience and safety of experimental teaching and is not conducive to the improvement of teaching quality. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the problems existing in the prior art, the present invention provides a multi-functional teaching equipment for experiments to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present invention provides the following technical solutions: A multi-functional teaching equipment for experiments includes an operating table and two spacer plates installed on the operating table; it further includes a sealing mechanism. The sealing mechanism includes a plurality of top sleeves installed at equal intervals on the two spacer plates, and a rotating disk is rotatably installed in each top sleeve. A synchronous disk is coaxially installed on the rotating disk. A plurality of fixing rods are fixedly installed on the top sleeve. A plurality of sealing plates are rotatably installed on the synchronous disk. Expansion grooves are formed on the sealing plates, and the fixing rods are slidably connected in the expansion grooves; it also includes a fixing mechanism. The fixing mechanism includes an inner sleeve fixedly installed on the top sleeve. A top ring is slidably connected inside the inner sleeve, and the lower end of the inner sleeve is slidably connected to a bottom ring. A plurality of spiral bars are installed at equal intervals between the top ring and the bottom ring, and a plurality of intermediate balls are respectively installed on the inner walls of each spiral bar.

[0008] Preferably, the sealing mechanism further includes a plurality of arc-shaped grooves formed in the synchronous disk, and the fixing rod is slidably connected in the arc-shaped grooves. This design realizes the precise guiding and stable movement of the sealing plate through the sliding fit of the arc-shaped grooves and the fixing rod. At the same time, the curve design of the arc-shaped grooves ensures the continuity and stability of the opening and closing process of the sealing plate, improving the sealing effect.

[0009] Preferably, the plurality of top sleeves on the two spacer plates are arranged in a staggered manner. Through the staggered arrangement of the top sleeves, not only the space utilization rate is improved, but also an appropriate distance is maintained between the test tubes, facilitating operation and observation. At the same time, this layout also enhances the stability of the overall structure.

[0010] Preferably, the fixing mechanism further includes a plurality of rubber balls installed at equal intervals on the inner wall of the top ring. A threaded sleeve is slidably connected to the lower end surface of the inner sleeve, and the threaded sleeve is threadedly connected to the bottom ring. A plurality of positioning strips are installed at equal intervals on the outer wall of the bottom ring, and a plurality of positioning grooves are formed in the inner wall of the inner sleeve. The positioning strips are slidably connected in the positioning grooves. The design of this multiple fixing mechanism provides flexible support through the rubber balls, realizes precise adjustment through the threaded sleeve, and the cooperation of the positioning strips and the positioning grooves ensures the accuracy of movement.

[0011] Preferably, an embedding groove is formed in the outer wall of the top ring, and a two-way ring is slidably connected in the embedding groove. Thrust bearings are respectively installed on both sides of the two-way ring, and the two thrust bearings respectively abut against the upper and lower ends of the embedding groove. Through the combined design of the two-way ring and the thrust bearings, the friction during rotation is effectively reduced, and at the same time, a good compensation effect is provided, making the operation of the entire mechanism smoother.

[0012] Preferably, a telescopic sleeve is connected and installed on the top ring in a communicating manner. The telescopic sleeve is slidably connected to the outer wall of the inner sleeve. A plurality of guide rods are installed at equal intervals on the lower end surface of the rotating disk. Guide holes corresponding to the plurality of guide rods are formed in the telescopic sleeve, and the guide rods are slidably connected in the guide holes. The design of this guiding system ensures the stability and accuracy of the telescopic sleeve during movement. The cooperation of the guide rods and the guide holes prevents deflection and shaking.

[0013] Preferably, a one-way sleeve is coaxially installed at the lower end of the telescopic sleeve. A plurality of elastic sheets are installed at equal intervals on the outer wall of the inner sleeve. An annular groove is formed in the inner wall of the one-way sleeve, and the elastic sheets are clamped in the annular groove. Through the cooperation of the one-way sleeve and the elastic sheets, a reliable one-way limiting function is realized, preventing accidental loosening.

[0014] Preferably, a drawstring is installed on each of the elastic sheets, and the plurality of drawstrings are respectively connected to a draw sleeve which is slidably connected to the outer wall of the inner sleeve. The design of this drawstring mechanism enables the operator to easily control the contraction of the elastic sheets, facilitating the release of the fixed state. Meanwhile, the synchronous action of multiple drawstrings ensures the smoothness of the unlocking process.

[0015] Preferably, a plurality of friction grooves are equidistantly formed on the inner wall of the annular groove, and the elastic sheet is stuck on the friction grooves. The precise cooperation between the friction grooves and the elastic sheet increases the reliability of fixation. Meanwhile, the design of the friction grooves also provides an additional positioning function, preventing the accidental displacement of the elastic sheet during use.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides a multifunctional teaching device for experiments, which has the following

[0018] beneficial effects:

[0019] This multifunctional teaching device for experiments achieves remarkable technical effects through innovative structural design: The device adopts a multi-layer sealing structure. Through the cooperation of the top sleeve and the sealing plate, rapid sealing of the test tube is realized, and the synchronous opening and closing mechanism of the sealing plate ensures the reliability of sealing. In terms of the fixing system, through the combined design of the spiral strip and the intermediate ball, double-limiting of the test tube is achieved. When initially inserted, the intermediate ball provides a pre-fixing force, and the contraction mechanism of the spiral strip provides a stronger fixing force. This progressive fixing method not only protects the test tube but also ensures the reliability of fixation. The operation process is simple and intuitive, and only simple insertion, pressing, and rotation actions are required to complete the fixation and sealing of the test tube. The device is equipped with multiple safety protection devices, including elastic sheet limiting and thrust bearing compensation structures, which improve the smoothness of use. Through the cooperation of the positioning strip and the positioning groove, the positioning of the test tube during the fixing process is ensured. The fixing force of the device can be adjusted by the operating force to adapt to test tubes of different specifications and different experimental requirements. The key components adopt a detachable design, which is convenient for daily cleaning and maintenance. These designs not only improve the safety and convenience of experimental teaching but also provide an ideal auxiliary tool for laboratory teaching, enhancing the teaching effect and experimental safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of a multifunctional teaching device for experiments in the present invention;

[0021] Figure 2 is a schematic diagram of the structures of the inner sleeve and the top sleeve in the present invention;

[0022] Figure 3 is a schematic diagram of the structures of the one-way sleeve and the telescopic sleeve in the present invention;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of the inner sleeve and the telescopic sleeve in the present invention;

[0024] Figure 5 It is a schematic structure diagram of the rubber ball and the spiral strip in the present invention;

[0025] Figure 6 It is a schematic cross-sectional structure diagram of the inner sleeve in the present invention;

[0026] Figure 7 It is a schematic structure diagram of the top sleeve and the rotating disk in the present invention;

[0027] Figure 8 It is a schematic cross-sectional structure diagram of the top sleeve in the present invention;

[0028] Figure 9 It is an exploded structure diagram of the rotating disk and the sealing plate in the present invention;

[0029] Figure 10 It is a schematic structure diagram of the rotating disk and the synchronizing disk in the present invention.

[0030] In the figure: 11, operating platform; 12, spacer; 21, top sleeve; 22, rotating disk; 23, synchronizing disk; 24, fixing rod; 25, sealing plate; 26, expansion groove; 27, arc groove; 31, inner sleeve; 32, top ring; 33, bottom ring; 34, spiral strip; 35, intermediate ball; 36, rubber ball; 37, threaded sleeve; 38, positioning strip; 39, positioning groove; 310, embedding groove; 311, bidirectional ring; 312, thrust bearing; 313, telescopic sleeve; 314, guide rod; 315, guide hole; 316, one-way sleeve; 317, elastic sheet; 318, annular groove; 319, pull rope; 320, pull sleeve; 321, friction groove. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0033] In the present invention, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are usually left and right as shown in the drawings; "inner, outer" refer to the inner and outer of the contours of each component itself, but the above orientation terms do not limit the present invention.

[0034] Please refer to Figures 1 to 4 for a multifunctional teaching device for experiments, which includes an operation table 11 and two spacer plates 12 installed on the operation table 11; a sealing mechanism is also included. The sealing mechanism includes a plurality of top sleeves 21 installed at equal intervals on the two spacer plates 12, and a rotating disk 22 is rotatably installed in each top sleeve 21. A synchronous disk 23 is coaxially installed on the rotating disk 22. A plurality of fixed rods 24 are fixedly installed on the top sleeve 21. A plurality of sealing plates 25 are rotatably installed on the synchronous disk 23. Expansion grooves 26 are formed on the sealing plates 25. The fixed rods 24 are slidably connected in the expansion grooves 26. The sealing mechanism also includes a plurality of arc grooves 27 formed on the synchronous disk 23. The fixed rods 24 are slidably connected in the arc grooves 27. The plurality of top sleeves 21 on the two spacer plates 12 are arranged in a staggered manner respectively.

[0035] Please refer to Figure 2 and Figure 4 When fixing a test tube, first insert the corresponding test tube into the top sleeve 21. At this time, the test tube will rub against the middle ball 35, generating a pre-fixing frictional force. At this time, the test tube can be fixed by the frictional force of the middle ball 35, and the rubber ball 36 also fits on the outer wall of the test tube to maintain its position. Then move the upper end of the test tube to a position flush with the upper end surface of the top sleeve 21. At this time, releasing the hand can complete the pre-fixing of the test tube.

[0036] When sealing the test tube, since the test tube is in a state flush with the upper end surface of the top sleeve 21 at this time, then pull down the telescopic sleeve 313. At this time, it will drive the top ring 32 to move downward, and then a plurality of spiral strips 34 will move downward. While moving downward, due to mutual extrusion, the plurality of spiral strips 34 will contract towards the axis. Therefore, the plurality of spiral strips 34 contract while moving downward. Since the middle ball 35 is stuck on the outer wall of the test tube at the beginning, it will apply a clamping force to the test tube at the beginning. At this time, the test tube will also move downward accordingly. Please refer to Figure 8 and Figure 9, when the test tube moves downward to the final position, it is at the lower end of multiple sealing plates 25. At this time, rotating the telescopic sleeve 313 will drive the rotating disk 22 to rotate. Since the synchronous disk 23 is connected to the rotating disk 22, the synchronous disk 23 will also rotate accordingly. The top sleeve 21 is fixedly connected to the inner sleeve 31. Therefore, the synchronous disk 23 will rotate relative to the top sleeve 21. Since multiple sealing plates 25 are respectively rotatably connected to the synchronous disk 23, and the fixed rod 24 is rotatably connected to the expansion slot 26 at the bottom of the sealing plate 25, and the fixed rod 24 is fixedly installed in the top sleeve 21, the arc-shaped slot 27 in the synchronous disk 23 will rotate along the fixed rod 24, and the fixed rod 24 is also slidably connected to the expansion slot 26. As the sealing plate 25 approaches the position of the fixed rod 24, the opening and closing degree between the sealing plate 25 and the top sleeve 21 will be changed, and multiple sealing plates 25 will open and close synchronously. Then, multiple sealing plates 25 will seal and close the top sleeve 21. At this time, the test tube is in a relatively sealed state, thus avoiding the contamination of the test tube.

[0037] Briefly describe the sealing process. First, insert the test tube into the top sleeve 21 so that the upper end of the test tube is flush with the upper end face of the top sleeve 21. Then, pull down the telescopic sleeve 313 and the test tube will move downward synchronously. When the fixation is completed, the test tube is also lower than the position of multiple sealing plates 25. Then, rotate the telescopic sleeve 313 to close multiple sealing plates 25. Therefore, the test tube will be in a relatively sealed state. Only a few simple operations are needed to complete the fixation and sealing process.

[0038] The fixing mechanism includes an inner sleeve 31 fixedly installed on the top sleeve 21. A top ring 32 is slidably connected inside the inner sleeve 31, and the lower end of the inner sleeve 31 is slidably connected to a bottom ring 33. A plurality of spiral bars 34 are equidistantly installed between the top ring 32 and the bottom ring 33, and a plurality of intermediate balls 35 are respectively installed on the inner walls of each spiral bar 34. The fixing mechanism further includes a plurality of rubber balls 36 equidistantly installed on the inner wall of the top ring 32. A threaded sleeve 37 is slidably connected to the lower end face of the inner sleeve 31, and the threaded sleeve 37 is threadedly connected inside the bottom ring 33. A plurality of positioning bars 38 are equidistantly installed on the outer wall of the bottom ring 33. A plurality of positioning grooves 39 are formed on the inner wall of the inner sleeve 31, and the positioning bars 38 are slidably connected in the positioning grooves 39. An embedding groove 310 is formed on the outer wall of the top ring 32, and a two-way ring 311 is slidably connected inside the embedding groove 310. Thrust bearings 312 are respectively installed on both sides of the two-way ring 311, and the two thrust bearings 312 respectively abut against the upper and lower ends of the embedding groove 310. A telescopic sleeve 313 is connected and installed on the top ring 32 in a communicating manner, and the telescopic sleeve 313 is slidably connected to the outer wall of the inner sleeve 31. A plurality of guide rods 314 are equidistantly installed on the lower end face of the rotating disc 22. Guide holes 315 corresponding to the plurality of guide rods 314 are formed on the telescopic sleeve 313, and the guide rods 314 are slidably connected in the guide holes 315. A one-way sleeve 316 is coaxially installed at the lower end of the telescopic sleeve 313. A plurality of elastic pieces 317 are equidistantly installed on the outer wall of the inner sleeve 31. An annular groove 318 is formed on the inner wall of the one-way sleeve 316, and the elastic pieces 317 are stuck in the annular groove 318. A pull rope 319 is respectively installed on each elastic piece 317, and the plurality of pull ropes 319 are respectively connected to a pull sleeve 320. The pull sleeve 320 is slidably connected to the outer wall of the inner sleeve 31. A plurality of friction grooves 321 are equidistantly formed on the inner wall of the annular groove 318, and the elastic pieces 317 are stuck on the friction grooves 321.

[0039] When it is necessary to fix the test tube, first insert the test tube to a position flush with the upper end face of the top sleeve 21. Please refer to Figure 4 and Figure 5, the middle ball 35 will pre-fix the test tube. Then, pulling the telescopic sleeve 313 downward will drive the top ring 32 downward. At this time, multiple spiral strips 34 will move downward synchronously to produce a state of mutual fitting. And the middle ball 35 also moves downward accordingly, so it will drive the test tube downward. The bottom ring 33 at the lower end of the spiral strip 34 is in a fixed state. Since the spiral strip 34 rotates when moving downward, and the rotation amount is offset under the action of multiple thrust bearings 312 and the embedding grooves 310. Then, when multiple spiral strips 34 are mutually fitted and continue to be pushed downward, the previous spiral strip 34 will be squeezed on the next spiral strip 34. Since the outer wall of the spiral strip 34 is limited and fitted on the inner wall of the inner sleeve 31, with the mutual extrusion, the spiral strip 34 will contract along its inclined surface towards the axis. Therefore, it will fit with the test tube to generate frictional force to fix it. Please refer to Figure 3 , and at this time, the lower end surface of the telescopic sleeve 313 will abut against the elastic piece 317, then the elastic piece 317 will be stuck on the annular groove 318, and then the clamping and fixing between multiple spiral strips 34 and the test tube are ensured. At this time, the fixation of the test tube is completed. When the test tube needs to be sealed, only rotate the telescopic sleeve 313. Since the guide rod 314 is slidably connected in the guide hole 315, it will drive the rotating disc 22 to rotate to complete the sealing process. And multiple elastic pieces 317 will be stuck on the friction grooves 321 in the annular groove 318, thus ensuring the limit of the seal, and then completing the fixation process.

[0040] When it is necessary to release the connection between the annular groove 318 and the elastic piece 317, pull the telescopic sleeve 313 and the pull sleeve 320 downward synchronously. First, release the clamping between the elastic piece 317 and the annular groove 318, then drive the pull rope 319 through the pull sleeve 320 to make the elastic piece 317 contract, and then move the telescopic sleeve 313 upward to release the fixation between the annular groove 318 and the elastic piece 317, thus completing the release process.

[0041] In all the above-mentioned solutions, for the connection between two components, welding, bolt and nut mating connection, bolt or screw connection or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional teaching device for experiments, comprising an operating table (11) and two partition boards (12) mounted on the operating table (11); wherein: Also includes The sealing mechanism comprises a plurality of top sleeves (21) mounted on two spacer plates (12) at equal intervals, and a rotating disk (22) is rotatably mounted in each of the top sleeves (21), a synchronous disk (23) is coaxially mounted on the rotating disk (22), a plurality of fixing rods (24) are fixedly mounted on the top sleeve (21), a plurality of sealing plates (25) are rotatably mounted on the synchronous disk (23), an expansion groove (26) is formed on the sealing plate (25), and the fixing rods (24) are coaxially mounted on the rotating disk (22). ) is slidably connected in the expansion groove (26); and also includes a fixing mechanism, the fixing mechanism includes an inner sleeve (31) fixedly mounted on the top sleeve (21), the inner sleeve (31) is slidably connected to the top ring (32), the lower end of the inner sleeve (31) is slidably connected to the bottom ring (33), a plurality of spiral strips (34) are installed at equal intervals between the top ring (32) and the bottom ring (33), and a plurality of intermediate balls (35) are respectively installed on the inner wall of each of the spiral strips (34).

2. The multifunctional teaching device for experiment according to claim 1, characterized in that: The sealing mechanism also includes a plurality of arc-shaped grooves (27) formed on the synchronization disk (23), and the fixing rod (24) is slidably connected in the arc-shaped grooves (27).

3. The multifunctional teaching device for experiment according to claim 1, characterized in that: The multiple top sleeves (21) on the two partition plates (12) are respectively arranged in an interlaced manner.

4. The multifunctional teaching device for experiment according to claim 1, characterized in that: The fixing mechanism further comprises a plurality of rubber balls (36) mounted at equal intervals on the inner wall of the top ring (32); a threaded sleeve (37) is slidably connected to the lower end surface of the inner sleeve (31), and the threaded sleeve (37) is threadedly connected to the bottom ring (33); a plurality of positioning strips (38) are mounted at equal intervals on the outer wall of the bottom ring (33); a plurality of positioning grooves (39) are formed on the inner wall of the inner sleeve (31), and the positioning strips (38) are slidably connected to the positioning grooves (39).

5. The multifunctional teaching device for experiment according to claim 4 is characterized in that: An embedding groove (310) is provided on the outer wall of the top ring (32), and the embedding groove (310) is slidably connected to the bidirectional ring (311). Thrust bearings (312) are respectively installed on both sides of the bidirectional ring (311), and the two thrust bearings (312) respectively abut against the upper and lower ends of the embedding groove (310).

6. The multifunctional teaching device for experiment according to claim 5 is characterized in that: A telescopic sleeve (313) is connected and installed on the top ring (32), and the telescopic sleeve (313) is slidably connected to the outer wall of the inner sleeve (31). A plurality of guide rods (314) are installed at equal intervals on the lower end surface of the rotating disk (22), and guide holes (315) corresponding to the plurality of guide rods (314) are opened on the telescopic sleeve (313), and the guide rods (314) are slidably connected in the guide holes (315).

7. The multifunctional teaching device for experiment according to claim 6 is characterized in that: A one-way sleeve (316) is coaxially mounted on the lower end of the telescopic sleeve (313), a plurality of elastic sheets (317) are evenly spacedly mounted on the outer wall of the inner sleeve (31), an annular groove (318) is formed on the inner wall of the one-way sleeve (316), and the elastic sheets (317) are clamped in the annular groove (318).

8. The multifunctional teaching device for experiment according to claim 7 is characterized in that: A draw rope (319) is installed on each elastic sheet (317), and a plurality of draw ropes (319) are connected to a draw sleeve (320) respectively. The draw sleeve (320) is slidably connected to the outer wall of the inner sleeve (31).

9. The multifunctional teaching device for experiment according to claim 8 is characterized in that: A plurality of friction grooves (321) are formed at equal intervals on the inner wall of the annular groove (318), and the elastic sheet (317) is clamped on the friction grooves (321).

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