Extraction test rack for chemistry

Abstract

The utility model discloses an extraction test rack for chemistry, and particularly relates to the field of extraction test racks, the extraction test rack comprises a base, the top of the base is fixedly provided with a support column, the inside of the support column is fixedly provided with positioning teeth, the outer side of the support column is slidably connected with a sliding block, and the inside of the sliding block is slidably connected with a limiting piece. A pull handle is fixedly installed on one side of the limiting piece, a first spring is arranged on one side of the pull handle and fixedly installed in the sliding block, a fixing screw is in threaded connection with the interior of the sliding block, the fixing screw and the supporting column are arranged in an attached mode, and a first rotating handle is fixedly installed at one end of the fixing screw. By arranging the limiting piece, when the sliding block slides downwards, the limiting piece is in contact with the top of the positioning tooth and is mutually limited with the top of the positioning tooth, so that the limiting piece cannot move downwards, the sliding block is limited, and the situation that the funnel is collided and damaged due to the fact that the sliding block slides downwards is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction test racks, and more specifically, to an extraction test rack for chemistry. Background Art

[0002] Extraction, also known as solvent extraction or liquid-liquid extraction, is a unit operation that uses the different solubility of components in the system in the solvent to separate the mixture. In the extraction test, a test stand is required to place the funnel and beaker. The existing test stand has the function of adjusting the height of the funnel ring, but when adjusting, the funnel ring loses its limit and may drop suddenly, which will cause damage to the funnel.

[0003] According to the Chinese utility model disclosure CN219424435U, a chemical extraction test stand is disclosed, which includes a base, a column is fixedly installed on the base, a movable ring is sleeved on the column, a cross bar is fixedly installed on the movable ring, and an annular ring is fixedly installed on one end of the cross bar. By placing the beaker on the base and in the annular sleeve, by placing the separatory funnel in the annular ring, the separatory funnel remains stable in the annular ring, and by sleeved the movable ring on the column, the movable ring can move along the column, and the height of the cross bar and the annular ring can be adjusted, thereby adjusting the height of the separatory funnel. However, when the height of the annular ring is adjusted, the annular ring loses its limit and may drop suddenly, which will cause damage to the inner funnel. Therefore, in view of this problem, how to design a chemical extraction test stand has become a problem that we currently need to solve. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a chemical extraction test stand, in which a limit piece is provided. When the slider slides downward, the limit piece contacts with the top of the positioning tooth and limits each other, so that the limit piece cannot move downward, thereby limiting the slider and preventing the slider from sliding downward and causing damage to the funnel, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chemical extraction test stand, comprising a base, a support column fixedly installed on the top of the base, a positioning tooth fixedly installed inside the support column, a slider slidably connected to the outside of the support column, a limiting member slidably connected inside the slider, a pull handle fixedly installed on one side of the limiting member, a first spring provided on one side of the pull handle, the first spring fixedly installed inside the slider, a fixing screw threadedly connected to the inside of the slider, the fixing screw and the support column are arranged in a close-fitting state, and a first rotating handle is fixedly installed on one end of the fixing screw.

[0006] In a preferred embodiment, a connecting rod is fixedly mounted on one side of the sliding block, and a collar is fixedly mounted on one end of the connecting rod.

[0007] In a preferred embodiment, a frame is fixedly mounted on the top of the base, and a first arc plate is slidably connected to the inner side of the frame.

[0008] In a preferred embodiment, a second spring is provided on one side of the first arc plate, and the second spring is fixedly installed on the inner side of the frame.

[0009] In a preferred embodiment, a second arc plate is slidably connected to the inner side of the frame, and an adjusting screw is rotatably connected to one side of the second arc plate.

[0010] In a preferred embodiment, the adjusting screw is threadedly connected to the frame, and a second handle is fixedly mounted on one end of the adjusting screw.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model sets a limiter. When the slider slides downward, the limiter contacts the top of the positioning tooth and limits each other, so that the limiter cannot move downward, thereby limiting the slider and preventing the funnel from being damaged by collision when the slider slides downward. When the ring needs to be moved downward, the limiter can be slid by pulling the handle, and the slider can slide downward at this time;

[0013] 2. The utility model arranges a first arc plate and a second arc plate, places a beaker on the inner side of the first arc plate and the second arc plate, rotates the second turning handle to make the adjusting screw drive the second arc plate to slide to one side, thereby pushing the beaker to move until the cup wall fits with the bottom end of the funnel, thereby fixing the beaker between the first arc plate and the second arc plate, thereby avoiding the phenomenon of solution collection error caused by beaker displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side structural schematic diagram of the utility model;

[0015] Figure 2 For this utility model Figure 1 A magnified view of the structure of part A;

[0016] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0017] The accompanying drawings are marked as follows: 1. base; 2. support column; 3. positioning tooth; 4. slider; 5. limit piece; 6. pull handle; 7. first spring; 8. fixing screw; 9. first turning handle; 10. connecting rod; 11. collar; 12. frame; 13. first arc plate; 14. second spring; 15. second arc plate; 16. adjusting screw; 17. second turning handle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Refer to the instruction manual Figure 1-3 ,like Figure 1 As shown, a chemical extraction test stand according to an embodiment of the present invention comprises a base 1, a support column 2 is fixedly mounted on the top of the base 1, as shown in FIG. Figure 2 As shown, a positioning tooth 3 is fixedly installed inside the support column 2, a slider 4 is slidably connected to the outside of the support column 2, a limiting member 5 is slidably connected inside the slider 4, a pull handle 6 is fixedly installed on one side of the limiting member 5, a first spring 7 is provided on one side of the pull handle 6, the first spring 7 is fixedly installed inside the slider 4, a fixing screw 8 is threadedly connected inside the slider 4, the fixing screw 8 is arranged in a close fit with the support column 2, a first rotating handle 9 is fixedly installed on one end of the fixing screw 8, and a connecting rod 10 is fixedly installed on one side of the slider 4, as shown in FIG. Figure 3 A collar 11 is fixedly mounted on one end of the connecting rod 10 .

[0020] It should be noted that, when performing the extraction test, the funnel is placed on the inner side of the collar 11, and the beaker for receiving the solution is placed on the inner side of the frame 12. When the height of the collar 11 needs to be adjusted to control the distance between the funnel and the beaker, the first handle 9 is rotated to slide the fixing screw 8 to one side and separate from the support column 2, so that the slider 4 loses the limit. At this time, the slider 4 is pulled upward to make the collar 11 rise. At the same time, when the limit member 5 rises and contacts the positioning tooth 3, under the limit of the bottom bevel of the positioning tooth 3, the The limit piece 5 slides to one side, so that the limit piece 5 can slide upwards. At the same time, the first spring 7 will always be in a stretched state, so that the limit piece 5 and the positioning tooth 3 are in a clamping state. On the contrary, when the slider 4 slides downward, the limit piece 5 contacts the top of the positioning tooth 3 and limits each other, so that the limit piece 5 cannot go down, thereby limiting the slider 4 to prevent the slider 4 from sliding downward and causing the funnel to be damaged by bumps. When the ring 11 needs to be moved downward, the limit piece 5 can be slid by pulling the handle 6, and the slider 4 can slide downward at this time.

[0021] Further, such as Figure 3 As shown, a frame 12 is fixedly installed on the top of the base 1, a first arc plate 13 is slidably connected to the inner side of the frame 12, a second spring 14 is provided on one side of the first arc plate 13, the second spring 14 is fixedly installed on the inner side of the frame 12, a second arc plate 15 is slidably connected to the inner side of the frame 12, an adjusting screw 16 is rotatably connected to one side of the second arc plate 15, the adjusting screw 16 is threadedly connected to the frame 12, and a second handle 17 is fixedly installed on one end of the adjusting screw 16.

[0022] It should be noted that, since the solution flowing out of the funnel needs to flow downward along the wall of the beaker during extraction, the beaker can be placed on the inner side of the first arc plate 13 and the second arc plate 15, and the second turning handle 17 is rotated to make the adjusting screw 16 drive the second arc plate 15 to slide to one side, thereby pushing the beaker to move until the wall of the cup fits with the bottom end of the funnel. In this way, the beaker is fixed between the first arc plate 13 and the second arc plate 15 through the tensile force of the second spring 14 and the thrust of the second arc plate 15, thereby avoiding the phenomenon of solution collection errors caused by beaker displacement, and it can be applicable to beakers of various sizes.

[0023] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0024] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0025] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A chemical extraction test stand, comprising a base (1), characterized in that: A support column (2) is fixedly installed on the top of the base (1), a positioning tooth (3) is fixedly installed inside the support column (2), a slider (4) is slidably connected to the outside of the support column (2), a limiting member (5) is slidably connected inside the slider (4), a pull handle (6) is fixedly installed on one side of the limiting member (5), a first spring (7) is provided on one side of the pull handle (6), the first spring (7) is fixedly installed inside the slider (4), a fixing screw (8) is threadedly connected inside the slider (4), the fixing screw (8) is arranged in a close fit with the support column (2), and a first rotating handle (9) is fixedly installed on one end of the fixing screw (8).

2. A chemical extraction test stand according to claim 1, characterized in that: A connecting rod (10) is fixedly mounted on one side of the sliding block (4), and a collar (11) is fixedly mounted on one end of the connecting rod (10).

3. The chemical extraction test stand according to claim 2, characterized in that: A frame (12) is fixedly mounted on the top of the base (1), and a first arc plate (13) is slidably connected to the inner side of the frame (12).

4. The chemical extraction test stand according to claim 3, characterized in that: A second spring (14) is provided on one side of the first arc plate (13), and the second spring (14) is fixedly mounted on the inner side of the frame (12).

5. The chemical extraction test stand according to claim 4, characterized in that: A second arc plate (15) is slidably connected to the inner side of the frame (12), and an adjusting screw rod (16) is rotatably connected to one side of the second arc plate (15).

6. The chemical extraction test stand according to claim 5, characterized in that: The adjusting screw (16) is threadedly connected to the frame (12), and a second rotating handle (17) is fixedly mounted on one end of the adjusting screw (16).

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