Experimental device for contrast
By designing a control experimental device with a dispenser and a rotating baffle, the problems of limited observation area and large error in existing devices were solved, achieving uniform distribution and precise observation of experimental organisms, reducing human error, and improving the accuracy of experimental results.
Patent Information
- Application Number
- CN202520079142.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing control experimental devices have simple structures, limited observation areas, and cannot be used for maximum observation. The devices are also limited in height, making it easy for insects to crawl out. They also easily create shadows in areas of light, making the contrast between dark and light areas unclear. Furthermore, the placement of experimental organisms is inconvenient, and the number is difficult to control, resulting in large errors in the experimental results.
The design includes a dispenser and two opposing first and second boxes. The first box is a light-shielding box, and the second box is a light-transmitting box. The experimental organisms are placed into the boxes by the dispenser. The rotating design of the baffle forms the dispensing port, and the rotation of the baffle is achieved by a traction component, which facilitates the uniform distribution and observation of the experimental organisms.
The experimental organisms are evenly distributed, their numbers are easy to control, the light and dark controls are obvious, human error is reduced, insects are prevented from crawling out, the experimental results are accurate, and the recovery is convenient.
Smart Images
Figure CN223772856U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biological experimental device technology, and in particular to an experimental device for control purposes. Background Technology
[0002] Mealworms, also known as breadworms, have larvae that are mostly slender and cylindrical. They prefer dim light and are lively and active, making them one of the easiest animals in nature to raise and breed. Woodlice are small terrestrial arthropods that prefer dark and damp environments, inhabiting among dead branches and leaves or under rocks. They feed mainly on dead branches and fallen leaves and are widely distributed, making them relatively easy to collect throughout the country. Therefore, mealworms and woodlice are widely selected as experimental organisms for teaching experiments, which can be used to explore the effects of light on the distribution of organisms.
[0003] Investigating the effect of light on the distribution of organisms is an important inquiry-based experiment in middle school biology teaching. However, existing control experimental setups are simple in structure and have many problems. In the classroom, teachers generally use trays to make simple observation devices, but the observation area is limited, making it impossible to observe the maximum range; the height of the device is limited, and insects can easily crawl out, causing unnecessary classroom disturbances; at the same time, shadows are easily formed in the lighted area, and the contrast between the dark and the lighted areas is not obvious, leading to inaccurate experimental results; it is inconvenient to place the experimental organisms, and it is difficult to control the number of organisms placed evenly, resulting in large errors in the experimental results; after the experiment, the experimental organisms are not easy to collect, etc.
[0004] Therefore, a control experimental setup is proposed to address the above-mentioned problems. Utility Model Content
[0005] Based on the above, the purpose of this utility model is to provide a control experimental device that allows for convenient placement of experimental organisms, easy control of their quantity, and clear contrast between dark and light areas during the experiment.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A control experimental apparatus includes a dispenser, a first chamber and a second chamber arranged opposite to each other; the first chamber is a light-shielding chamber, the second chamber is a light-transmitting chamber, and the dispenser is a hollow cylindrical structure used for dispensing experimental organisms;
[0008] A baffle is provided on the side of the first box that is opposite to the second box. The baffle is rotatably connected to the first edge of the first box. The top wall of the first box and the baffle are respectively provided with a first notch and a second notch. The first notch and the second notch are symmetrically arranged opposite to the first edge. When the baffle is rotated to be on the same plane as the top wall of the first box, the first notch and the second notch are joined together to form a delivery port. When the baffle is rotated to be perpendicular to the bottom wall of the first box, the length of the baffle along the height direction of the first box is less than the height of the side wall of the first box.
[0009] The second box has an opening on the side opposite to the first box. The second box is detachably fitted onto the first box. A third notch is provided on the top wall of the second box near the first box.
[0010] When the second box is fitted over the first box, the baffle is rotated to be on the same plane as the top wall of the first box, the third notch coincides with the dispensing port, and the dispenser passes through the third notch and the dispensing port in sequence.
[0011] As a preferred embodiment of the experimental apparatus for control purposes, it further includes a first traction member. The baffle has a first hole at the end opposite to the first edge, and the top wall of the second box has a second hole at the end opposite to the first box. One end of the first traction member is fixedly connected to the first hole, and the other end is movably inserted through the second hole. By traction of the first traction member, the baffle is driven to rotate around the first edge.
[0012] As a preferred embodiment of the experimental apparatus for control purposes, it further includes a second traction member. The end of the baffle away from the first edge is provided with a third hole, and the side wall of the first box body opposite to it is provided with a fourth hole. One end of the second traction member is fixedly connected to the third hole, and the other end is movably inserted through the fourth hole. By traction of the second traction member, the baffle is driven to rotate around the first edge.
[0013] As a preferred embodiment of the experimental setup for control purposes, the length of the dispenser is greater than the height of the first box.
[0014] As a preferred embodiment of the experimental apparatus for control purposes, an extension plate is provided on the bottom wall of the first chamber extending toward the direction of the second chamber.
[0015] As a preferred embodiment of the experimental apparatus for control purposes, the outer surface of the first chamber is provided with an opaque film, or the first chamber is made of an opaque material.
[0016] The beneficial effects of this utility model are as follows:
[0017] This invention provides a control experimental apparatus, including a dispenser, a first box, and a second box arranged opposite each other. The second box is partially fitted over the first box, and the baffle of the first box is rotated until it is flush with the top wall of the first box. At this point, the first and second notches in the top wall and baffle of the first box align to form a dispensing opening. A third notch in the top wall of the second box coincides with the dispensing opening. The dispenser passes through the third notch and the dispensing opening sequentially to dispense experimental organisms. Because the first and second notches are symmetrically arranged relative to the first edge, the dispenser has equal volumes within the first and second boxes, ensuring a uniform distribution of experimental organisms initially placed within them. This facilitates control over the number of organisms placed in the first and second boxes, reduces errors caused by human factors, and results in more accurate experimental results. Furthermore, using the dispenser makes placing the experimental organisms more convenient.
[0018] After the experimental organisms were introduced, the baffle was rotated until it was perpendicular to the bottom wall of the first chamber, and the experiment to investigate the effect of light on the distribution of the organisms began. Since the first chamber was a light-blocking chamber and the second chamber was a light-transmitting chamber, the contrast between the dark and light areas was obvious during the experiment. The length of the baffle along the height of the first chamber was less than the height of its side wall, facilitating the movement of the experimental organisms between the first and second chambers, thus allowing observation of the effect of light on the distribution of the experimental organisms. At the same time, the first and second chambers formed a closed space, making it difficult for the experimental organisms to climb out and avoiding disruption to the classroom experimental teaching order. After the experiment, the first and second chambers were separated for easy retrieval of the experimental organisms. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of the first and second boxes provided in this embodiment of the utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the control experimental device provided in this embodiment of the utility model (when the baffle is rotated to be on the same plane as the top wall of the first box);
[0022] Figure 3 This is a structural schematic diagram of the control experimental device provided in this embodiment of the present invention from another perspective (when the baffle is rotated to be perpendicular to the bottom wall of the first box);
[0023] In the picture:
[0024] 1. Dispenser;
[0025] 2. First box body; 21. Top wall of the first box body; 211. First edge; 212. First notch; 22. Baffle; 221. Second notch; 222. First hole; 223. Third hole; 23. Bottom wall of the first box body; 231. Extension plate; 24. Fourth hole;
[0026] 3. Second box; 31. Top wall of the second box; 311. Third notch; 312. Second hole. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are merely used for descriptive distinction and have no special meaning.
[0031] like Figures 1 to 3 As shown, this embodiment provides a control experimental apparatus, which includes a dispenser 1, a first box 2 and a second box 3 arranged opposite to each other. The first box 2 is a light-shielding box, and the second box 3 is a light-transmitting box. The dispenser 1 is a hollow cylindrical structure used for dispensing experimental organisms. A baffle 22 is provided on the side of the first box 2 opposite to the second box 3. The baffle 22 is rotatably connected to the first edge 211 of the first box 2. The top wall 21 of the first box and the baffle 22 are respectively provided with a first notch 212 and a second notch 221. 221 is symmetrically arranged relative to the first edge 211. When the baffle 22 is rotated to be on the same plane as the top wall 21 of the first box, the first notch 212 and the second notch 221 are joined together to form a delivery port. When the baffle 22 is rotated to be perpendicular to the bottom wall 23 of the first box, the length of the baffle 22 along the height direction of the first box 2 is less than the height of the side wall of the first box. The side of the second box 3 opposite to the first box 2 is open. The second box 3 is partially detachably fitted outside the first box 2. The top wall 32 of the second box is provided with a third notch 311 on the side close to the first box 2.
[0032] In this embodiment, the second box 3 is partially fitted over the first box 2, and the baffle 22 of the first box 2 is rotated until it is on the same plane as the top wall 21 of the first box. At this time, the first notch 212 and the second notch 221 opened in the top wall 21 and the baffle 22 of the first box are joined together to form a delivery port. The third notch 311 opened in the top wall 32 of the second box coincides with the delivery port. The delivery device 1 passes through the third notch 311 and the delivery port in sequence to deliver the experimental organisms. Since the first notch 212 and the second notch 221 are symmetrically arranged relative to the first edge 211, the volume of the delivery device 1 in the first box 2 and the second box 3 is equal, thereby ensuring that the experimental organisms initially located in the first box 2 and the second box 3 are evenly distributed. This makes it easier to control the number of experimental organisms placed in the first box 2 and the second box 3, reduces errors caused by human factors in the experiment, and makes the experimental results more accurate. In addition, the use of the delivery device 1 makes the placement of experimental organisms more convenient. After the experimental organisms were introduced, the baffle 22 was rotated until it was perpendicular to the bottom wall 23 of the first box, and the experiment to investigate the effect of light on the distribution of the organisms began. Since the first box 2 is a light-blocking box and the second box 3 is a light-transmitting box, the contrast between the dark and light areas was obvious during the experiment. The length of the baffle 22 along the height of the first box 2 was less than the height of the side wall of the first box 2, facilitating the movement of the experimental organisms between the first box 2 and the second box 3, thus allowing observation of the effect of light on the distribution of the experimental organisms. At the same time, the first box 2 and the second box 3 formed a closed space, making it difficult for the experimental organisms to climb out and avoiding disruption to the classroom experimental teaching order. After the experiment, the first box 2 and the second box 3 were separated for easy retrieval of the experimental organisms.
[0033] Specifically, the control experimental apparatus also includes a first traction component. A first hole 222 is formed at the end of the baffle 22 facing away from the first edge 211, and a second hole 312 is formed at the end of the top wall 32 of the second box facing away from the first box 2. One end of the first traction component is fixedly connected to the first hole 222, and the other end is movably inserted through the second hole 312. By pulling the first traction component, the baffle 22 is rotated around the first edge 211. In this embodiment, the first traction component is preferably a thread. One end of the thread is fixedly connected to the first hole 222, and the other end is movably inserted through the second hole 312. By pulling the thread outside the second box 3, the baffle 22 rotates to be on the same plane as the top wall 21 of the first box. At this time, the first hole 222 and the second hole 312 coincide, facilitating the delivery device 1 to enter the delivery port and deliver the experimental organism. After the delivery device 1 has delivered the organism, the thread is released, and the baffle 22 rotates under gravity to be perpendicular to the bottom wall 23 of the first box. By setting a first traction component, relative rotation between the baffle 22 and the first edge 211 is achieved, facilitating the release of experimental organisms. In other embodiments, the first hole 222 and the second hole 312 can also be set at other positions on the baffle 22 and the top wall 33 or side wall of the second box, as long as relative rotation between the baffle 22 and the first edge 211 is achieved.
[0034] Preferably, the control experimental apparatus further includes a second traction member. A third hole 223 is provided at the end of the baffle 22 facing away from the first edge 211, and a fourth hole 24 is provided on the opposite side wall of the first housing 2. One end of the second traction member is fixedly connected to the third hole 223, and the other end is movably inserted through the fourth hole 24. By pulling the second traction member, the baffle 22 is rotated around the first edge 211. In this embodiment, the second traction member is preferably a thread. One end of the thread is fixedly connected to the third hole 223, and the other end is movably inserted through the fourth hole 24. By pulling the thread outside the side wall of the first housing, the baffle 22 rotates to be perpendicular to the bottom wall 23 of the first housing. Since the rotation of the baffle 22 to be perpendicular to the bottom wall 23 of the first housing under gravity may encounter resistance after the device ages, the baffle 22 needs to be reset under the pulling force of the second traction member to facilitate subsequent experiments. In other embodiments, the third hole 223 and the fourth hole 24 may also be provided at other positions on the baffle 22 and the side wall of the first housing, respectively, so as to achieve the resetting of the baffle 22.
[0035] In this embodiment, the outer surface of the first box 2 is provided with an opaque film. In another embodiment, the first box 2 is made of an opaque material. Both of these methods allow the first box 2 to simulate a dark experimental environment, which facilitates the conduct of control experiments.
[0036] Furthermore, since the second box 3 is a light-transmitting box made of transparent material, by placing a light source outside the second box 3, the second box 3 is in a lit environment, which can be compared with the dark environment of the first box 2. This makes it convenient for students to observe and count the experimental organisms in the second box 3 during the experiment, and to obtain the effects of darkness and light on experimental organisms such as mealworms or woodlice.
[0037] Specifically, an extension plate 231 is provided on the bottom wall of the first box 2 extending towards the direction of the second box 3. When the second box 3 is partially fitted over the first box 2, the extension plate 231 is located on the bottom wall of the second box, and at the same time, along the length of the extension plate 231, the extension plate 231 abuts against the side wall of the second box, completing the assembly of the first box 2 and the second box 3. Both the bottom wall 23 of the first box and the extension plate 231 are made of opaque and smooth material, which allows clear observation of the movement of experimental organisms in the light and dark areas, facilitating the conduct of control experiments.
[0038] More specifically, after the dispenser 1 enters the dispensing port, the dispenser 1 abuts against the bottom wall 23 of the first box and the extension plate 231. At this time, the dispenser 1, the bottom wall 23 of the first box and the extension plate 231 form a closed space. Since the first notch 212 and the second notch 221 are symmetrically arranged relative to the first edge 211, the area of the bottom wall 23 of the first box and the extension plate 231 in this closed space is equal, thereby ensuring that the experimental organisms initially located in the first box 2 and the second box 3 are evenly distributed, which makes it easier to control the number of experimental organisms placed in the first box 2 and the second box 3.
[0039] Furthermore, the length of the dispenser 1 is greater than the height of the first box 2. Since the dispenser 1 needs to extend downwards to abut against the bottom wall 23 of the first box and the extension plate 231 after being inserted into the third notch 311 and the dispensing port in sequence, it can dispensing materials. This makes the experimental organisms evenly distributed in the dark area and the light area. The dispenser 1 is located outside the third notch 311, which facilitates the dispensing operation of experimental organisms.
[0040] Furthermore, after the delivery operation is completed, the dispenser 1 needs to be removed, and the baffle 22 needs to be rotated to be perpendicular to the bottom wall 23 of the first box. Then, the dispenser 1 is inserted into the card interface formed by the first notch 212, the second notch 221 and the third notch 311. At this time, the inside of the first box 2 is kept dark to prevent light from entering the card interface during the control experiment and affecting the experimental results.
[0041] The method of using the control experimental apparatus in this novel embodiment is as follows:
[0042] The second box 3 is fitted over the first box 2 until the extension plate 231 abuts against the side wall of the second box, thus completing the assembly of the first box 2 and the second box 3. The baffle 22 is rotated until it is on the same plane as the top wall 21 of the first box. Then the dispenser 1 is passed through the third notch 311 and the dispensing port in sequence until the dispenser 1 abuts against the bottom wall 23 of the first box and the extension plate 231. The experimental organism is then dispensed through the dispenser 1.
[0043] After the release is completed, let it stand for 2-3 minutes to allow the experimental organisms to be evenly distributed in the releaser 1, thereby controlling the number of experimental organisms initially located in the first box 2 and the second box 3. Take out the releaser 1, and at the same time rotate the baffle 22 to be perpendicular to the bottom wall 23 of the first box. Then insert the releaser 1 into the locking interface formed by the first notch 212, the second notch 221 and the third notch 311.
[0044] The experiment was conducted by providing a light source outside the second chamber 3 and observing the distribution of the experimental organisms. The number of organisms inside the second chamber 3 was recorded every minute for ten minutes. The experimental results were then obtained based on the recorded data. After the experiment was completed, the first chamber 2 was separated from the second chamber 3, and the experimental organisms were recovered.
[0045] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A control experimental apparatus, characterized in that, It includes a dispenser, a first box and a second box arranged opposite to each other; the first box is a light-shielding box, the second box is a light-transmitting box, and the dispenser is a hollow columnar structure used for dispensing experimental organisms; A baffle is provided on the side of the first box that is opposite to the second box. The baffle is rotatably connected to the first edge of the first box. The top wall of the first box and the baffle are respectively provided with a first notch and a second notch. The first notch and the second notch are symmetrically arranged opposite to the first edge. When the baffle is rotated to be on the same plane as the top wall of the first box, the first notch and the second notch are joined together to form a delivery port. When the baffle is rotated to be perpendicular to the bottom wall of the first box, the length of the baffle along the height direction of the first box is less than the height of the side wall of the first box. The second box has an opening on the side opposite to the first box. The second box is detachably fitted onto the first box. A third notch is provided on the top wall of the second box near the first box. When the second box is fitted over the first box, the baffle is rotated to be on the same plane as the top wall of the first box, the third notch coincides with the dispensing port, and the dispenser passes through the third notch and the dispensing port in sequence.
2. The control experimental apparatus according to claim 1, characterized in that, It also includes a first traction member. The baffle has a first hole at the end opposite to the first edge, and the top wall of the second box has a second hole at the end opposite to the first box. One end of the first traction member is fixedly connected to the first hole, and the other end is movably inserted through the second hole. By traction of the first traction member, the baffle is driven to rotate around the first edge.
3. The control experimental apparatus according to claim 1, characterized in that, It also includes a second traction component. The end of the baffle away from the first edge is provided with a third hole. The side wall of the first box body is provided with a fourth hole. One end of the second traction component is fixedly connected to the third hole, and the other end is movably inserted through the fourth hole. By pulling the second traction component, the baffle is driven to rotate around the first edge.
4. The control experimental apparatus according to claim 1, characterized in that, The length of the dispenser is greater than the height of the first box.
5. The control experimental apparatus according to claim 1, characterized in that, An extension plate is provided on the bottom wall of the first box body extending toward the direction of the second box body.
6. The control experimental apparatus according to claim 1, characterized in that, The outer surface of the first box is provided with an opaque film, or the first box is made of an opaque material.