CN215877458U

CN215877458U - Experimental device for junior middle school's biochemistry experiments

Info

Publication number: CN215877458U
Application number: CN202122230140.6U
Authority: CN
Inventors: 王若茜
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-02-22
Anticipated expiration: 2031-09-15

Abstract

The utility model relates to the technical field of teaching aids, and discloses an experimental device for junior middle school chemistry experiments, which comprises a concave bracket, wherein a placing plate in the horizontal direction is inserted in the concave bracket, a row of test tubes are inserted in the placing plate, two support plates which are bilaterally symmetrical are formed on the front side and the rear side of the placing plate, a guide rod in the front-rear axial direction is arranged between each two corresponding support plates, two clamping plates which are symmetrical in the front-rear direction and can move oppositely or oppositely are sleeved between the two guide rods, the test tubes are positioned between the two clamping plates, and an oscillating assembly for enabling the placing plate to move up and down is arranged on the concave bracket. According to the utility model, through the oscillating assembly arranged on the concave bracket, the placing plate can move up and down under the action of the oscillating assembly, and the test tubes are driven to continuously move up and down, so that the effect of oscillating the test tubes is achieved.

Description

Experimental device for junior middle school's biochemistry experiments

Technical Field

The utility model belongs to the technical field of teaching aids, and particularly relates to an experimental device for a junior middle school student chemistry experiment.

Background

Experiment, refers to one of the basic methods of scientific research. According to the purpose of scientific research, the external influence is eliminated as much as possible, main factors are highlighted, and a research object is artificially reformed, controlled or simulated by using some special instruments and equipment, so that some things (or processes) occur or reappear, and natural phenomena, natural properties and natural laws are known. In the beginning, chemical experiments are needed so that students can better master the contents of textbooks, and therefore, teaching aids for chemical experiments are needed.

In the chemistry course, the test tube is one of the laboratory glassware commonly used, for example, just need add the vitriol at the test tube to fixed dissolution experiment in people's teaching version chemistry course, add appropriate amount water with the test tube again, then through the oscillation test tube in order to observe its dissolution process, and probably need use a plurality of test tubes to add different experimental articles and vibrate in the course of reality and come the contrast experimentation, but the teacher is with every test tube with the hand vibration respectively, firstly can consume more time, influence the efficiency of course, secondly can't vibrate a plurality of test tubes simultaneously, the unable audio-visual chemical reaction process that observes out in every test tube of student, it is very necessary to design an experimental apparatus for the primary school's chemistry experiment to solve this kind of problem consequently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problems in the background art, the utility model provides an experimental device for a junior middle school chemistry experiment.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an experimental apparatus for junior middle school's chemistry experiments, includes concave type support, concave type support interpolation is equipped with the board of placing that is the horizontal direction, it has one row of test tube to peg graft on the board to place, both sides all are formed with the extension board of two bilateral symmetry around placing the board, all are provided with axial guide bar around being between per two corresponding extension boards, two the splint that symmetry and can carry out opposite or relative removal around having cup jointed two between the guide bar, the test tube is located between two splint, be provided with on the concave type support and be used for making the oscillation subassembly that places the board and reciprocate.

Furthermore, a positive thread and a negative thread are respectively arranged on two sides of the circumferential surface of one of the guide rods, the two sides of the guide rod are respectively inserted into the corresponding clamping plates through the matching of the threads, and one end of the guide rod penetrates through the supporting plate and is fixedly connected with a knob.

Furthermore, one side of each of the two clamping plates, which is close to each other, is fixedly connected with a rubber non-slip mat.

Furthermore, the inner wall both sides of concave type support have all seted up the stroke groove along its direction of height, the both sides of placing the board all are formed with the stroke piece of slip grafting in corresponding stroke groove.

Further, the mounting groove that is located under one of them stroke groove is seted up to inner wall one side of concave type support, the oscillation subassembly sets up in the mounting groove and is horizontal axial circular slab including rotating, the non-centre of a circle department of surface of circular slab rotates and is connected with the connecting rod, one of them the bottom fixedly connected with of stroke piece is the movable rod of vertical direction, just the bottom of movable rod runs through the stroke groove and extends to the mounting groove and rotate with one side that the circular slab was kept away from to the connecting rod and be connected, be provided with on the concave type support and be used for driving the circular slab and carry out pivoted driving piece.

Furthermore, the driving part comprises a micro motor fixedly installed on one side of the concave support, an output shaft of the micro motor and the circular plate are located on the same central axis, the tail end of the output shaft of the micro motor penetrates through the concave support and extends into the installation groove, and one end, located in the installation groove, of the output shaft of the micro motor is fixedly connected with the circular plate at the position of the circle center of the end face, away from the connecting rod.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the oscillation assembly is arranged on the concave bracket, so that the two clamping plates can move oppositely to clamp the test tube, the test tube is fixed on the placing plate through the contact force, then the placing plate can move up and down under the action of the oscillation assembly, and the test tube is driven to continuously move up and down, thereby achieving the effect of oscillating the test tube.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic plan view of the present invention;

FIG. 4 is an exploded view of the present invention;

in the figure: 1. a concave support; 2. placing the plate; 3. a test tube; 4. a guide bar; 5. a splint; 51. a rubber non-slip mat; 6. a support plate; 7. a knob; 8. a stroke slot; 9. a stroke block; 10. mounting grooves; 11. a movable rod; 12. a circular plate; 13. a connecting rod; 14. a micro motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the experimental apparatus for the junior middle school chemistry experiment provided by the present embodiment comprises a concave bracket 1, a horizontal placing plate 2 is inserted into the concave bracket 1, a row of test tubes 3 is inserted into the placing plate 2, two bilateral symmetrical support plates 6 are formed on the front and back sides of the placing plate 2, a front and back axial guide rod 4 is arranged between each two corresponding support plates 6, two front and back symmetrical clamping plates 5 capable of moving in opposite directions or in opposite directions are sleeved between the two guide rods 4, the test tubes 3 are located between the two clamping plates 5, an oscillating assembly for moving the placing plate 2 up and down is arranged on the concave bracket 1, so that the two clamping plates 5 can move in opposite directions to clamp the test tubes 3, the test tubes 3 are fixed on the placing plate 2 by a contact force, and then the placing plate 2 can move up and down by the action of the oscillating assembly, and drive test tube 3 and constantly reciprocate to reach the effect of vibration test tube 3, this kind of mode can will place test tube 3 on the board 2 and vibrate simultaneously, makes things convenient for the student to compare and observes, and convenient and fast more, makes teaching speed improve.

Specifically, referring to fig. 2, the specific reason why the two clamp plates 5 can move in opposite directions or in opposite directions is that two sides of the circumferential surface of one guide rod 4 are respectively provided with a forward-rotation thread and a backward-rotation thread, and two sides of the guide rod 4 are respectively inserted into the corresponding clamp plates 5 through the matching of the threads, one end of the guide rod 4 penetrates through the support plate 6 and is fixedly connected with a knob 7, so that when the test tube 3 needs to be oscillated, a teacher can hold the knob 7 with a hand and rotate the guide rod 4 to drive the guide rod 4 to rotate correspondingly, while the guide rod 4 rotates, the two clamp plates 5 can be driven to move correspondingly through the matching of the forward-rotation thread and the backward-rotation thread, and the two clamp plates 5 are sleeved on the guide rod 4 and can only move back and forth along the guide rod 4 but cannot rotate, so that the two clamp plates 5 can move in opposite directions or opposite directions along with the rotation of the guide rod 4, to act as a grip or release for the test tube 3.

Preferably, two splint 5 equal fixedly connected with rubber slipmat 51 in one side that are close to each other, rubber slipmat 51 have elasticity and the plasticity of preferred, and when two splint 5 pressed from both sides test tube 3 tightly, rubber slipmat 51 can carry out certain deformation according to the shape on test tube 3 surface to increase the area of contact between splint 5 and the test tube 3, improve frictional force, so that the fixed firm that can be more of test tube 3.

As for the specific connection mode between the placing plate 2 and the concave bracket 1, as shown in fig. 4, the two sides of the inner wall of the concave bracket 1 are both provided with a stroke slot 8 along the height direction thereof, and the two sides of the placing plate 2 are both formed with a stroke block 9 inserted in the corresponding stroke slot 8 in a sliding manner.

Meanwhile, in order to enable the placing plate 2 to move up and down, in some embodiments, it is provided that one side of the inner wall of the concave bracket 1 is provided with a mounting groove 10 located right below one of the stroke slots 8, the oscillating assembly includes a circular plate 12 rotatably disposed in the mounting groove 10 and in a horizontal axial direction, a connecting rod 13 is rotatably connected to a non-circle center position on the surface of the circular plate 12, a movable rod 11 in a vertical direction is fixedly connected to the bottom of one of the stroke blocks 9, the bottom of the movable rod 11 penetrates through the stroke slot 8 and extends to the mounting groove 10 and is rotatably connected to one side of the connecting rod 13 far away from the circular plate 12, a driving member for driving the circular plate 12 to rotate is disposed on the concave bracket 1, the connecting rod 13 is driven to perform corresponding movement when the circular plate 12 rotates, and the connecting rod 13 can drive the movable rod 11 to perform up and down reciprocating sliding in the stroke slot 8, thereby play the drive and place the effect that board 2 reciprocated to reach the purpose of vibration test tube 3.

Specifically, the driving part comprises a micro motor 14 fixedly installed on one side of the concave support 1, an output shaft of the micro motor 14 and the circular plate 12 are located on the same central axis, the tail end of the output shaft penetrates through the concave support 1 and extends into the installation groove 10, one end of the output shaft of the micro motor 14, which is located in the installation groove 10, is fixedly connected with the circular plate 12 at the center of the end face circle far away from the connecting rod 13, and therefore the effect of driving the circular plate 12 to rotate can be achieved through rotation of the output shaft of the micro motor 14.

In the device, all electric devices and drivers matched with the electric devices are arranged, and all driving parts, namely power elements, the electric devices and adaptive power supplies, are connected through leads by a person skilled in the art, and specific connecting means refer to the above expression that the electric devices are electrically connected in sequence, and detailed connecting means thereof are well known in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an experimental apparatus for junior middle school's chemistry experiments, includes concave type support (1), its characterized in that, concave type support (1) interpolation is equipped with places board (2) that is the horizontal direction, it has one row of test tube (3) to peg graft on board (2) to place, both sides all are formed with extension board (6) of two bilateral symmetry around board (2) of placing, all are provided with between per two corresponding extension board (6) and are axial guide bar (4) around being, two splint (5) that have cup jointed two longitudinal symmetries between guide bar (4) and can carry out opposite or opposite removal, test tube (3) are located between two splint (5), be provided with on concave type support (1) and be used for making to place the vibration subassembly that board (2) reciprocated.

2. The experimental device for the junior middle school student's chemistry experiments as claimed in claim 1, wherein two sides of the circumferential surface of one of the guide rods (4) are respectively provided with a forward screw thread and a backward screw thread, and two sides thereof are respectively inserted into the corresponding clamping plates (5) through the matching of the screw threads, and one end of the guide rod (4) penetrates through the support plate (6) and is fixedly connected with the knob (7).

3. A laboratory device for junior middle school chemistry experiments according to claim 1, wherein a rubber mat (51) is fixedly connected to each of the adjacent sides of the two clamping plates (5).

4. The experimental device for the chemical experiments of junior middle schools according to claim 1, wherein the concave bracket (1) is provided with a stroke groove (8) along the height direction at both sides of the inner wall, and the placing plate (2) is provided with a stroke block (9) at both sides thereof which is inserted into the corresponding stroke groove (8) in a sliding manner.

5. The experimental device for junior middle school student's chemistry experiments of claim 4, characterized in that, the mounting groove (10) that is located under one of them stroke groove (8) is seted up to inner wall one side of concave type support (1), the subassembly that oscillates includes rotates and sets up in mounting groove (10) and be horizontal axial circular slab (12), the non-centre of a circle department in surface of circular slab (12) rotates and is connected with connecting rod (13), one of them the bottom fixedly connected with of stroke piece (9) is movable rod (11) of vertical direction, just the bottom of movable rod (11) runs through stroke groove (8) and extends to mounting groove (10) and rotate with one side that circular slab (12) were kept away from in connecting rod (13) and is connected, be provided with on concave type support (1) and be used for driving circular slab (12) and carry out pivoted driving piece.

6. The experimental device for the junior middle school student's chemistry experiments of claim 5, wherein the driving piece includes a micro motor (14) fixedly installed on one side of the concave bracket (1), the output shaft of the micro motor (14) and the circular plate (12) are located on the same central axis, and the end of the output shaft of the micro motor (14) penetrates through the concave bracket (1) and extends into the installation groove (10), and the end of the output shaft of the micro motor (14) located in the installation groove (10) is fixedly connected with the circular plate (12) far away from the center of the end face of the connecting rod (13).