Plastic multipurpose dropper structure for chemistry teaching in senior high school and use method of plastic multipurpose dropper structure

Abstract

The invention belongs to the technical field of chemical experiment equipment, and provides a plastic multipurpose dropper structure for high school chemistry teaching and a using method thereof.The plastic multipurpose dropper structure comprises an extrusion assembly, the lower end of the extrusion assembly is fixedly connected with a first connecting assembly, and a liquid measuring pipe is installed on the inner side of the lower end of the first connecting assembly; the lower end of the liquid measuring pipe is sleeved with a second connecting assembly, a liquid inlet assembly is installed at the lower end of the second connecting assembly, and a plugging assembly is fixedly installed on the outer surface of the liquid inlet assembly. The sealing ring moves up and down along with the adjusting ring, so that the aperture size of the liquid inlet is adjusted, the liquid suction speed of the dropper is adjusted, meanwhile, large-particle impurities are prevented from entering the dropper by reducing the aperture size, meanwhile, the angle of the liquid measuring pipe can be adjusted through the rubber soft sleeve in the using process, using is more flexible and convenient, and using is more convenient. And chemical teaching demonstration is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical experimental equipment, in particular to a plastic multi-purpose dropper structure for high school chemistry teaching and a use method thereof. Background Art

[0002] The dropper is divided into a fat-bellied dropper and a common dropper, which is composed of a rubber nipple and a pointed polypropylene tube. It is mainly used to absorb or add a small amount of reagents, as well as absorb the upper clear liquid and separate the precipitate.

[0003] In high school chemistry teaching, experimental demonstration is one of the important teaching links. As a commonly used tool in experiments, the performance of the dropper directly affects the quality and safety of the experiment. At present, the common plastic droppers on the market have the following disadvantages: traditional droppers generally rely on simple suction principles and cannot effectively adjust the liquid absorption speed. In addition, during use, the dropper may not be able to quickly and accurately absorb the required liquid due to improper operation. This not only wastes time, but also easily leads to inaccurate experimental results; the traditional rubber head is easy to slip when squeezed, causing liquid spillage or experimental personnel to make mistakes, increasing the risk of chemical reagent leakage and contact hazards; because the front end of the dropper is in direct contact with the laboratory table, it is easy to cause damage to the head of the dropper, especially in the case of frequent use or improper placement, resulting in repeated purchases and waste, and more importantly, damaged droppers may interfere with the teaching process; when using traditional droppers, it is not easy to adjust the angle, which limits the flexibility of experimental demonstrations, making it difficult to accurately carry out some experiments that require specific observation angles, affecting the teaching effect; at the same time, most droppers are structurally unable to effectively filter large particles of impurities in the liquid, resulting in impurities being sucked into the dropper during the absorption process, affecting the experimental results and increasing the difficulty of cleaning.

[0004] To this end, technicians in this field have proposed a plastic multi-purpose dropper structure for high school chemistry teaching and a method of using the same, aiming to improve the experimental effect and safety in high school chemistry teaching. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a plastic multi-purpose dropper structure for high school chemistry teaching and a use method thereof to solve the problems raised in the background technology.

[0006] According to a first aspect of the present disclosure, a plastic multi-purpose dropper structure for high school chemistry teaching is proposed, comprising an extrusion component, a first connection component is fixedly connected to the lower end of the extrusion component, a liquid measuring tube is installed on the inner side of the lower end of the first connection component, a second connection component is sleeved on the lower end of the liquid measuring tube, a liquid inlet component is installed at the lower end of the second connection component, and a blocking component is fixedly installed on the outer surface of the liquid inlet component;

[0007] The blocking component includes a fixed sleeve which is sleeved on the outer surface of the liquid inlet component, and limit rings are fixedly provided at the upper and lower ends of the fixed sleeve. An adjustment ring is movably provided on the outer surface of the fixed sleeve, and a connecting rod is fixedly provided around the lower end surface of the adjusting ring. A sealing ring is fixedly provided on the lower end surface of the connecting rod, and the sealing ring is attached to the outer surface of the liquid inlet component.

[0008] Preferably, the extrusion assembly includes a rubber head, a plurality of groups of protrusions are arranged on the outer surface of the rubber head, a dome is arranged on the top of the rubber head, an elastic pad is installed inside the rubber head, the elastic pad is connected to the side of the inner wall of the rubber head, and the elastic pad adopts a mesh cross structure.

[0009] Preferably, the first connecting component includes a connecting ring fixedly arranged at the lower end of the rubber head, the interior of the connecting ring is a hollow structure, the lower end of the connecting ring is provided with an annular groove, a sealing gasket is installed in the annular groove, and the sealing gasket is arranged in an annular T shape.

[0010] Preferably, the inner side of the lower end of the sealing gasket wraps a measuring tube, and the outer surface of the measuring tube is provided with scales.

[0011] Preferably, the second connecting assembly includes a rubber sleeve arranged at the lower end of the measuring tube, the measuring tube is connected to the convex ring through the rubber sleeve, and the measuring tube moves through the rubber sleeve.

[0012] Preferably, the liquid inlet assembly comprises a liquid inlet pipe arranged at the lower end of the convex ring, two groups of mutually symmetrical liquid inlets are opened on the side surface of the lower end of the liquid inlet pipe, and the bottom of the liquid inlet pipe is in a closed state.

[0013] Preferably, the fixed sleeve of the blocking assembly is arranged on the liquid inlet pipe, and the sealing ring is movably arranged on the outer surface of the liquid inlet pipe.

[0014] According to a second aspect of the present disclosure, a method for using a plastic multi-purpose dropper for high school chemistry teaching is provided, comprising the following steps:

[0015] S1. Extend the lower end of the liquid inlet tube into the solution, squeeze the rubber head to generate negative pressure, and let the solution enter the liquid inlet tube and the measuring tube through the liquid inlet;

[0016] S2, the measuring tube is connected together with a rubber soft sleeve and a convex ring, and the angle of the measuring tube is adjusted according to the needs;

[0017] S3, after being squeezed, the rubber head is quickly reset through the elastic pad;

[0018] S4. The experimenter rotates the adjusting ring by hand to make it rotate spirally up or down on the outer wall of the fixed sleeve. At this time, the adjusting ring drives the sealing ring to move up or down through the connecting rod, and gradually exposes the liquid inlet hole completely or gradually blocks it to adjust the liquid suction efficiency;

[0019] S5. After the solution enters the measuring tube, the experimenter observes the amount of solution inside through the scale lines on the outer wall of the measuring tube;

[0020] S6. After the pipetting operation is completed, the dropper is placed on the dropper stand. When the experimenter accidentally places it on the laboratory bench, it is protected by the convex ring and the connecting ring to prevent the lower end of the liquid inlet tube from directly contacting the laboratory bench.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention generates negative pressure in the dropper to absorb the solution by squeezing the rubber head. The surface of the rubber head is provided with a convex piece to prevent slipping during use. At the same time, an elastic pad is provided so that the rubber head can be quickly reset after squeezing to ensure normal use.

[0023] 2. The convex ring and the connecting ring of the present invention are provided, so that when the experimenter directly places the dropper on the experimental table, the double rings protect it and prevent the front end of the dropper from directly contacting the experimental table, which not only prevents the front end of the dropper from being damaged, but also prevents the liquid from spilling. At the same time, the rubber soft sleeve can be used to adjust the angle of the measuring liquid tube during use, which is more flexible and convenient to use, and is convenient for chemical teaching demonstrations.

[0024] 3. The present invention adjusts the size of the liquid inlet by moving the sealing ring up and down with the adjusting ring, thereby adjusting the liquid suction speed of the dropper, and at the same time, by reducing the size of the caliber, large particles of impurities are prevented from entering the interior of the dropper. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the plastic multi-purpose dropper of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the extrusion assembly and the first connecting assembly of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the measuring tube and the second connecting component of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the plugging assembly of the present invention;

[0029] Figure 5 The present invention is a flow chart of the method for using the plastic multi-purpose dropper.

[0030] In the figure:

[0031] 100, extrusion assembly; 101, rubber head; 102, convex piece; 103, dome; 200, first connecting assembly; 201, connecting ring; 202, ring groove; 203, sealing gasket; 300, measuring tube; 400, second connecting assembly; 401, rubber soft sleeve; 402, convex ring; 500, liquid inlet assembly; 501, liquid inlet pipe; 502, liquid inlet port; 600, blocking assembly; 601, fixing sleeve; 602, limiting ring; 603, adjusting ring; 604, connecting rod; 605, sealing ring. DETAILED DESCRIPTION

[0032] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] As attached Figure 1 To Attachment Figure 4 As shown:

[0034] Embodiment 1: The present invention provides a plastic multi-purpose dropper structure for high school chemistry teaching, including an extrusion component 100, a first connection component 200 is fixedly connected to the lower end of the extrusion component 100, a liquid measuring tube 300 is installed on the inner side of the lower end of the first connection component 200, a second connection component 400 is sleeved on the lower end of the liquid measuring tube 300, a liquid inlet component 500 is installed at the lower end of the second connection component 400, and a plugging component 600 is fixedly installed on the outer surface of the liquid inlet component 500;

[0035] The plugging assembly 600 includes a fixed sleeve 601 sleeved on the outer surface of the liquid inlet assembly 500. The upper and lower ends of the fixed sleeve 601 are fixedly provided with limit rings 602 for limiting the adjustment ring 603 to prevent the adjustment ring 603 from falling off. The outer surface of the fixed sleeve 601 is movably provided with the adjustment ring 603. The lower end surface of the adjustment ring 603 is fixedly provided with a connecting rod 604. The lower end surface of the connecting rod 604 is fixedly provided with a sealing ring 605. The sealing ring 605 is attached to the outer surface of the liquid inlet assembly 500. By rotating the adjusting ring 603, the adjusting ring 603 moves up and down on the surface of the fixed sleeve 601, driving the sealing ring 605 fixedly connected by the connecting rod 604 to move up and down on the surface of the liquid inlet assembly 500.

[0036] The extrusion assembly 100 includes a rubber head 101, a plurality of groups of convex pieces 102 are arranged on the outer surface of the rubber head 101, a dome 103 is arranged on the top of the rubber head 101, an elastic pad is installed inside the rubber head 101, the elastic pad is connected to the side of the inner wall of the rubber head 101, and the elastic pad adopts a mesh cross structure. By squeezing the rubber head 101, negative pressure is generated in the dropper to absorb the solution. The convex pieces 102 are arranged on the surface of the rubber head 101, which play an anti-slip role when in use. At the same time, by arranging the elastic pad, the rubber head 101 can be quickly reset after squeezing to ensure normal use.

[0037] The first connection assembly 200 includes a connection ring 201 fixedly arranged at the lower end of the rubber head 101. The connection ring 201 is hollow inside. The lower end of the connection ring 201 is provided with an annular groove 202. A sealing gasket 203 is installed in the annular groove 202. The sealing gasket 203 is arranged in an annular T shape. The sealing gasket 203 ensures that the rubber head 101 and the measuring tube 300 are sealed and connected.

[0038] The inner side of the lower end of the sealing pad 203 wraps the measuring tube 300, and the outer surface of the measuring tube 300 is provided with a scale. By providing scale lines on the surface of the measuring tube 300, it is convenient for the experimenter to observe the amount of solution absorbed inside the measuring tube 300.

[0039] The second connecting assembly 400 includes a rubber sleeve 401 disposed at the lower end of the measuring tube 300, and the measuring tube 300 is connected to the convex ring 402 through the rubber sleeve 401, and the measuring tube 300 is movable through the rubber sleeve 401. Through the convex ring 402 and the connecting ring 201, when the experimenter directly places the dropper on the laboratory bench, the double rings are used to protect the front end of the dropper from directly contacting the laboratory bench, thereby preventing the front end of the dropper from being damaged and preventing the liquid from spilling. At the same time, through the rubber sleeve 401, the angle of the measuring tube 300 can be adjusted during use, which is more flexible and convenient to use, and convenient for chemical teaching demonstrations.

[0040] The liquid inlet assembly 500 includes a liquid inlet pipe 501 disposed at the lower end of the convex ring 402. Two sets of mutually symmetrical liquid inlets 502 are provided on the side of the lower end of the liquid inlet pipe 501. The bottom of the liquid inlet pipe 501 is in a closed state. The fixed sleeve 601 of the plugging assembly 600 is sleeved on the liquid inlet pipe 501, and the sealing ring 605 is movably disposed on the outer surface of the liquid inlet pipe 501. The sealing ring 605 moves up and down with the adjusting ring 603, thereby adjusting the caliber of the liquid inlet 502, thereby adjusting the liquid suction speed of the dropper, and at the same time, by reducing the caliber, large particles of impurities are prevented from entering the interior of the dropper.

[0041] As attached Figure 5 As shown:

[0042] Embodiment 2: The present invention also provides a method for using a plastic multi-purpose dropper for high school chemistry teaching, using the plastic multi-purpose dropper structure in Embodiment 1, comprising the following steps:

[0043] S1. Extend the lower end of the liquid inlet tube into the solution, squeeze the rubber head to generate negative pressure, and let the solution enter the liquid inlet tube and the measuring tube through the liquid inlet;

[0044] S2, the measuring tube is connected together with a rubber soft sleeve and a convex ring, and the angle of the measuring tube is adjusted according to the needs;

[0045] S3, after being squeezed, the rubber head is quickly reset through the elastic pad;

[0046] S4. The experimenter rotates the adjusting ring by hand to make it rotate spirally up or down on the outer wall of the fixed sleeve. At this time, the adjusting ring drives the sealing ring to move up or down through the connecting rod, and gradually exposes the liquid inlet hole completely or gradually blocks it to adjust the liquid suction efficiency;

[0047] S5. After the solution enters the measuring tube, the experimenter observes the amount of solution inside through the scale lines on the outer wall of the measuring tube;

[0048] S6. After the pipetting operation is completed, the dropper is placed on the dropper stand. When the experimenter accidentally places it on the laboratory bench, it is protected by the convex ring and the connecting ring to prevent the lower end of the liquid inlet tube from directly contacting the laboratory bench.

[0049] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A plastic multi-purpose dropper structure for high school chemistry teaching, characterized in that: The invention comprises an extrusion component (100), wherein the lower end of the extrusion component (100) is fixedly connected to a first connection component (200), a liquid measuring tube (300) is installed on the inner side of the lower end of the first connection component (200), a second connection component (400) is sleeved on the lower end of the liquid measuring tube (300), a liquid inlet component (500) is installed on the lower end of the second connection component (400), and a blocking component (600) is fixedly installed on the outer surface of the liquid inlet component (500); The plugging component (600) comprises a fixed sleeve (601) sleeved on the outer surface of the liquid inlet component (500), the upper and lower ends of the fixed sleeve (601) are fixedly provided with limit rings (602), the outer surface of the fixed sleeve (601) is movably provided with an adjustment ring (603), the lower end surface of the adjustment ring (603) is surrounded and fixedly provided with a connecting rod (604), the lower end surface of the connecting rod (604) is fixedly provided with a sealing ring (605), and the sealing ring (605) is attached to the outer surface of the liquid inlet component (500).

2. A plastic multi-purpose dropper structure for high school chemistry teaching as claimed in claim 1, characterized in that: The extrusion assembly (100) comprises a rubber head (101), the outer surface of the rubber head (101) is provided with a plurality of groups of protruding pieces (102), the top of the rubber head (101) is provided with a dome (103), an elastic pad is installed inside the rubber head (101), the elastic pad is connected to the inner wall side of the rubber head (101), and the elastic pad adopts a mesh cross structure.

3. A plastic multi-purpose dropper structure for high school chemistry teaching as claimed in claim 2, characterized in that: The first connection assembly (200) comprises a connection ring (201) fixedly arranged at the lower end of the rubber head (101); the interior of the connection ring (201) is a hollow structure; an annular groove (202) is provided at the lower end of the connection ring (201); a sealing gasket (203) is installed in the annular groove (202); and the sealing gasket (203) is arranged in an annular T shape.

4. A plastic multi-purpose dropper structure for high school chemistry teaching as claimed in claim 3, characterized in that: The inner side of the lower end of the sealing gasket (203) wraps the measuring tube (300), and the outer surface of the measuring tube (300) is provided with scales.

5. A plastic multi-purpose dropper structure for high school chemistry teaching as claimed in claim 4, characterized in that: The second connection assembly (400) comprises a rubber sleeve (401) arranged at the lower end of the measuring tube (300), the measuring tube (300) is connected to the convex ring (402) via the rubber sleeve (401), and the measuring tube (300) moves via the rubber sleeve (401).

6. A plastic multi-purpose dropper structure for high school chemistry teaching as claimed in claim 5, characterized in that: The liquid inlet assembly (500) comprises a liquid inlet pipe (501) arranged at the lower end of the convex ring (402), two groups of mutually symmetrical liquid inlets (502) are opened on the side surface of the lower end of the liquid inlet pipe (501), and the bottom of the liquid inlet pipe (501) is in a closed state.

7. A plastic multi-purpose dropper structure for high school chemistry teaching as claimed in claim 1, characterized in that: The fixed sleeve (601) of the plugging assembly (600) is sleeved on the liquid inlet pipe (501), and the sealing ring (605) is movably arranged on the outer surface of the liquid inlet pipe (501).

8. A method for using a plastic multi-purpose dropper for high school chemistry teaching, applied to a plastic multi-purpose dropper structure for high school chemistry teaching as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, extending the lower end of the liquid inlet tube (501) into the solution, squeezing the rubber head (101) to generate negative pressure, and allowing the solution to enter the liquid inlet tube (501) and the measuring tube (300) through the liquid inlet port (502); S2, the measuring tube (300) is connected together by means of a rubber soft sleeve (401) and a convex ring (402), and the angle of the measuring tube (300) is adjusted as required; S3, after being squeezed, the rubber head (101) is quickly reset through the elastic pad; S4. The experimenter rotates the adjusting ring (603) by hand to make it spiral upward or downward on the outer wall of the fixed sleeve (601). At this time, the adjusting ring (603) drives the sealing ring (605) to move upward or downward through the connecting rod (604), and gradually exposes the liquid inlet hole completely or gradually blocks it, so as to adjust the liquid suction efficiency; S5. After the solution enters the measuring tube (300), the experimenter observes the amount of the solution inside through the scale lines on the outer wall of the measuring tube (300); S6. After the liquid aspiration operation is completed, the dropper is placed on the dropper stand. When the experimenter accidentally places it on the laboratory table, the convex ring (402) and the connecting ring (201) are used to protect it, so as to prevent the lower end of the liquid inlet tube (501) from directly contacting the laboratory table.

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