Modularized self-assembly multifunctional experimental device

Abstract

The utility model relates to the field of experimental equipment, in particular to a modularized self-assembly multifunctional experimental device, which comprises a rack, a plurality of injectors and a plurality of three-way valves which are arranged on the rack, and a sensor which is arranged at the outlet of the three-way valve at the tail, and the injectors and the three-way valves are arranged at intervals. Each of the plurality of injectors comprises a needle cylinder and a piston rod movably arranged in the needle cylinder, the needle cylinders are hollow, injection holes communicated with the outside are formed in the needle cylinders, the three-way valves are used for communicating the injection holes in the two adjacent injectors, and the sensors are used for detecting experimental results. When an experiment is carried out, the injector and the three-way valve are matched with each other to control the reaction in the experiment, and through the arrangement of the sensor, an accurate experiment effect is conveniently obtained, so that the experiment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of experimental equipment, in particular to a modular self-assembled multifunctional experimental device. Background Art

[0002] In the normal temperature experiments in junior and senior high school chemistry courses, test tubes and beakers are often used for chemical experiments. However, multiple test tubes and beakers are usually required, and it is not convenient to control the reaction rate during the experiment. Existing experimental devices usually have multiple syringes of the same size, and the syringes are connected through three-way valves. During the experiment, the reaction rate can be controlled by controlling the pushing speed of the piston rods of the syringes, and the movement of reactants and products can be controlled by controlling whether the three outlets of the three-way valves are opened or closed, realizing the quantification and qualification of the experiment.

[0003] However, when it is necessary to measure variables that are not easily distinguishable by the naked eye, such as the reaction rate and concentration, and products without obvious characteristics, the existing experimental devices can only be distinguished by the naked eye or the products obtained from the reaction are subjected to additional detection, resulting in inaccurate experimental effects and affecting the experimental efficiency. Summary of the Utility Model

[0004] Based on the above technical problems existing in the prior art, the utility model provides a modular self-assembled multifunctional experimental device, which is convenient to obtain accurate experimental effects, thereby improving the experimental efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to provide a modular self-assembled multifunctional experimental device, including a frame, a plurality of syringes and several three-way valves arranged on the frame, and a sensor arranged at the outlet of the last three-way valve. The syringes and the three-way valves are arranged at intervals. Each of the plurality of syringes includes a syringe barrel and a piston rod movably arranged in the syringe barrel. The syringe barrel is hollow, and the syringe barrel is provided with an injection hole communicating with the outside. The three-way valve is used to connect the injection holes on two adjacent syringes, and the sensor is used to detect the experimental results.

[0006] Further, at least three syringes are provided.

[0007] Further, at least two three-way valves are provided.

[0008] Further, the modular self-assembled multifunctional experimental device further includes a one-way valve arranged between two adjacent three-way valves, and two ends of the one-way valve are respectively communicated with the two adjacent three-way valves.

[0009] Further, the modular self-assembled multifunctional experimental device further includes a fixing plate arranged on the frame, and the fixing plate is used to fix the syringe.

[0010] Furthermore, the fixing plate is provided with a fixing groove adapted to the syringe, the fixing groove is provided with fixing protrusions, the fixing plate is made of a flexible material, the fixing plate can be pressed open to be able to accommodate the syringe, and the fixing protrusions abut against the top end of the syringe.

[0011] Furthermore, the one-way valve is a Luer one-way valve.

[0012] Furthermore, the sensor is a pressure sensor.

[0013] Furthermore, the sensor is a concentration sensor.

[0014] Furthermore, the sensor is a gas sensor.

[0015] The beneficial effects of the present utility model are as follows: A modular self-assembled multifunctional experimental device is provided, which includes a frame, a plurality of syringes and several three-way valves arranged on the frame, and a sensor arranged at the outlet of the three-way valve at the end. The syringes and the three-way valves are arranged at intervals. Each of the plurality of syringes includes a syringe barrel and a piston rod movably arranged in the syringe barrel. The syringe barrel is hollow, and the syringe barrel is provided with an injection hole communicating with the outside. The three-way valve is used to connect the injection holes on two adjacent syringes, and the sensor is used to detect the experimental results. When conducting an experiment, through the mutual cooperation of the syringe and the three-way valve, the reaction in the experiment is controlled, and through the setting of the sensor, it is convenient to obtain accurate experimental results, thereby improving the efficiency of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below with reference to the drawings and embodiments.

[0017] In the figure: Figure 1 is an overall structure diagram of a modular self-assembled multifunctional experimental device provided by the present utility model;

[0018] Figure 2 is Figure 1 the front view of the modular self-assembled multifunctional experimental device shown;

[0019] Figure 3 is Figure 2 the A-A cross-sectional view of

[0020] Figure 4 is Figure 3 the enlarged view at A in

[0021] Figure 5 is Figure 1 the application example of the modular self-assembled multifunctional experimental device shown Figure 1 ;

[0022] Figure 6 For Figure 1 an application example of the modular self-assembly multifunctional experimental device shown Figure 2 .

[0023] Explanation of reference numerals: 100, modular self-assembly multifunctional experimental device; 10, frame; 20, syringe; 21, barrel; 211, injection hole; 22, piston rod; 30, three-way valve; 31, pipe body; threaded hole; 312, communication port; 32, adjusting plug; 321, through hole; 40, sensor; 50, one-way valve; 60, fixing plate; 61, fixing groove; 611, fixing protrusion; 70, pipeline. Specific embodiments

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basics of the present utility model in a schematic manner, so it only shows the components related to the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-6 , a modular self-assembly multifunctional experimental device 100, including a frame 10, a plurality of syringes 20 arranged on the frame 10 and several three-way valves 30, and a sensor 40 arranged at the outlet of the last three-way valve 30, and the syringes 20 and the three-way valves 30 are arranged at intervals. Specifically, the specific structure of the sensor 40 is not shown in the accompanying drawings corresponding to this embodiment, and the size change of the frame 10 corresponding to the attached Figure 5 drawing and the attached Figure 6 drawing is an adaptive setting for the syringes 20 and the three-way valves 30.

[0026] The plurality of syringes 20 each include a barrel 21 and a piston rod 22 movably arranged in the barrel 21. The barrel 21 is hollow, and the barrel 21 is provided with an injection hole 211 communicating with the outside. The three-way valve 30 is used to communicate the injection holes 211 on two adjacent syringes 20, and the sensor 40 is used to detect the experimental results. Optionally, at least three syringes 20 are provided. At least two three-way valves 30 are provided.

[0027] The three-way valve 30 includes a pipe body 31 and an adjusting plug 32. The pipe body 31 is provided with a threaded hole that is threadedly connected to the adjusting plug 32. The pipe body 31 is hollow and is provided with three communication ports 312. Specifically, in this embodiment, the plane where the central axis of the threaded hole is located and the planes where the central axes corresponding to the three communication ports 312 are located are perpendicular to each other. The side wall of the adjusting plug 32 is provided with three through holes 321 that communicate with each other. When it is necessary to control the communication between any two of the communication ports 312 of the three-way valve 30, rotate the adjusting plug 32 so that any two of the through holes 321 on the adjusting plug 32 communicate with the two communication ports 312 that need to be communicated in the three-way valve 30.

[0028] It can be understood that in some other embodiments, when it is necessary to detect the pressure changes in the syringe 20 and the three-way valve 30 caused by a certain reactant and product in the experiment, the sensor 40 is a pressure sensor.

[0029] It can be understood that in some other embodiments, when it is necessary to detect the concentration changes of a certain reactant and product in the experiment, the sensor 40 is a concentration sensor.

[0030] It can be understood that in some other embodiments, when it is necessary to detect whether a certain gas is generated in the experiment, the sensor 40 is a corresponding gas sensor.

[0031] The modular self-assembled multifunctional experimental device 100 further includes a check valve 50 disposed between adjacent three-way valves 30. The two ends of the check valve 50 are respectively communicated with two adjacent three-way valves 30. Specifically, in this embodiment, the specific position and number of the check valve 50 are set according to the actual experimental requirements. The check valve 50 is a Luer check valve 50, and the Luer check valve 50 is used to prevent gas from flowing back. Specifically, the syringe 20, the three-way valve 30, and the check valve 50 are connected by a pipeline 70. The check valve 50 in the corresponding drawings of this embodiment is only a schematic diagram, and the specific structure is not drawn. The modular self-assembled multifunctional experimental device 100 further includes a fixing plate 60 disposed on the frame 10. The fixing plate 60 is used to fix the syringe 20. The fixing plate 60 is provided with a fixing groove 61 adapted to the syringe 20. The fixing groove 61 is provided with a fixing protrusion 611. The fixing plate 60 is made of a flexible material. The fixing plate 60 can be pressed and opened to be able to fit the syringe 20, and the fixing protrusion 611 abuts against the top end of the syringe 20.

[0032] Taking the experiment of "copper reacting with nitric acid" as an example, the working process of a modular self-assembled multifunctional experimental device 100 provided by the present invention is as follows: Please refer to Figure 5, the syringes 20 are named A, B, C, and D from left to right in sequence, and the three-way valves 30 are named a, b, and c in sequence. Among them, A is placed horizontally, while B, C, and D are all placed vertically. The sensor 40 used is a NO₂ gas sensor. The one-way valve 50 is arranged between the three-way valves b and c to prevent the gas involved in the reaction or the liquid from flowing back during the experiment, ensuring the airtightness of the device. During the experiment, first place an appropriate amount of concentrated nitric acid in A, a small amount of copper wire or copper sheet in B, and NaOH solution in D. Then assemble the A filled with concentrated nitric acid, the B with a small amount of copper wire or copper sheet placed in it, as well as C, D, and the three-way valves 30a, b, and c, so that the three through holes 321 on the adjusting plug 32 of the three-way valve a are respectively and correspondingly connected to the injection holes 211 of A, the injection holes 211 of B, and the injection holes 211 of C. During the experiment, first rotate a so that any two communication ports 312 on a and the two through holes 321 corresponding to A and B on the adjusting plug 32 of a are respectively and correspondingly connected, and the through hole 321 corresponding to C on the adjusting plug 32 of a is not connected, thereby making A and B communicate with each other, and A and B are not connected to C, and A and B are not connected to D. Then slowly push and pull the piston rod 22 of A to drip the concentrated nitric acid in A into B, and control the reaction rate by controlling the pushing and pulling speed of the piston rod 22 of A. After the concentrated nitric acid reacts with the copper wire or copper sheet in B for a period of time, observe the experimental phenomena and record them; then rotate a and b so that A, B, and C are connected in sequence, and the connection from C to D is closed. Push the piston rod 22 of B and pull down the piston rod 22 of C to introduce the gas obtained from the reaction in B into C. At this time, the piston rod 22 of A is located at the rightmost end of the syringe barrel 21 of A, that is, the piston rod 22 of A plugs the syringe barrel 21 of A. The gas obtained from the reaction in B is collected in C. Then rotate b and c so that the connection between B and C is blocked, the connection between C and D is blocked, and C is connected to the sensor located at the right end of D; then push the piston rod 22 of C upward to introduce all the gas in C into the sensor 40, and the sensor 40 detects whether the gas is NO₂. Then rotate c so that D and the sensor 40 are connected, and pull down the piston rod 22 of D so that the gas after detection is introduced into D. If the generated gas is NO₂, then the NO₂ is absorbed by the NaOH solution in D for tail gas absorption, and the phenomena are observed and recorded. If the generated gas is not NO₂, the gas remains in D for property testing after the reaction is completed.

[0033] Please refer to Figure 6 , in the appendix Figure 5 As shown, three exactly the same syringes 20 and two three-way valves 30 are provided at the right end of the three-way valve c. The three-way valve 30 at the leftmost end is connected to the sensor 40. The difference is that Figure 6 the nitric acid added to the syringe 20 in Figure 6Among the three newly added syringes 20, from right to left are E, F, and G in sequence, and the two three-way valves 30 are d and e in sequence. A one-way valve 50 (not marked in the figure) is provided between the three-way valve e and c to prevent gas backflow or liquid back-suction. The experimental process is the same as that shown in the appendix Figure 5 and the experimental process shown in the appendix Figure 6 The modular self-assembled multifunctional experimental device 100 shown can compare the reaction products of concentrated and dilute nitric acids with copper.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection, it can be a mechanical connection, it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than for indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] Based on the inspiration of the ideal embodiments of the present invention as above, through the above description, relevant staff can completely make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A modular self-assembling multi-functional experimental device, characterized in that: It includes a frame, a plurality of syringes arranged on the frame, several three-way valves, and a sensor arranged at the outlet of the last three-way valve. The syringes and the three-way valves are arranged at intervals. Each of the plurality of syringes includes a barrel and a piston rod movably arranged in the barrel. The barrel is hollow, and the barrel is provided with an injection hole communicating with the outside. The three-way valve is used to connect the injection holes on two adjacent syringes, and the sensor is used to detect the experimental results.

2. The modular self-assembling multi-functional experimental device according to claim 1, characterized in that : At least three syringes are provided.

3. The modular self-assembling multifunctional experimental device according to claim 2, characterized in that : At least two three-way valves are provided.

4. The modular self-assembly multifunctional experimental device according to claim 3, wherein : The modular self-assembled multi-functional experimental device further includes a one-way valve arranged between adjacent three-way valves, and two ends of the one-way valve are respectively communicated with two adjacent three-way valves.

5. The modular self - assembling multifunctional experimental device according to claim 1, characterized in that : The modular self-assembled multi-functional experimental device further includes a fixing plate arranged on the frame, and the fixing plate is used to fix the syringes.

6. The modular self-assembling multi-functional experimental device according to claim 5, characterized in that : The fixing plate is provided with a fixing groove adapted to the syringe. The fixing groove is provided with fixing protrusions. The fixing plate is made of a flexible material. The fixing plate can be pressed and opened to be able to install the syringe, and the fixing protrusions abut against the top of the syringe.

7. The modular self-assembly multifunctional experimental device according to claim 4, characterized in that : The one-way valve is a Luer one-way valve.

8. The modular self-assembling multi-functional experimental device according to claim 1, characterized in that : The sensor is a pressure sensor.

9. The modular self-assembly multifunctional experimental device according to claim 1, characterized in that : The sensor is a concentration sensor.

10. The modular self-assembly multifunctional experimental device according to claim 1, characterized in that : The sensor is a gas sensor.

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