Extraction device for chemical detection

Abstract

The utility model relates to an extraction device for chemical detection, which comprises a device support, a first support plate, a second support plate, a third support plate, a fourth support plate and a fifth support plate are arranged on the device support at intervals from top to bottom, a first flask is arranged on the fourth support plate, and a second flask is arranged on the third support plate. An extraction bottle is arranged on the second support plate, a condenser is arranged on the first support plate, a condenser liquid outlet connected with the upper end of the extraction bottle is formed in the lower end of the condenser, the upper end of the first flask is connected with the condenser through a first pipeline, and a pipe connector, connected with the condenser, of the first pipeline is located on the upper side of the condenser liquid outlet; and the lower end of the second flask is connected with the upper end of the first flask through a third pipeline. The extraction device solves the technical problem that in the prior art, extraction agent steam in the extraction bottle can influence the flow of extraction agent liquid in the condenser to the extraction bottle.

Description

Technical Field

[0001] The utility model relates to a chemical instrument used in a laboratory, in particular to an extraction device for chemical detection. Background Art

[0002] Extraction is a physical operation and one of the important means used in organic chemistry laboratories to extract and purify compounds. Through extraction, the desired substances can be extracted from solid or liquid mixtures.

[0003] During the extraction operation, a corresponding extraction device is required. The existing extraction device, such as the "light-duty extractant automatic extraction device" disclosed in Chinese patent CN2693330Y, includes a condenser, an extraction bottle and a flask arranged in sequence from top to bottom. A built-in funnel is arranged in the extraction bottle. The flask is connected to the extraction bottle through an extraction bottle branch pipe, and the condensed water outlet of the condenser is connected to the upper end of the extraction bottle.

[0004] When in use, the flask is heated, and the extractant in the flask evaporates and enters the extraction bottle through the branch pipe of the extraction bottle. The extraction bottle is provided with an extract, and then enters the condenser from bottom to top, is cooled into liquid in the condenser, and flows back to the extraction bottle from top to bottom. The extractant flowing back to the extraction bottle passes through the built-in funnel and enters the bottom of the extract. Since the specific gravity of the extractant is less than that of the aqueous solution, the extractant will automatically float from the bottom to the surface of the aqueous solution. During the floating process, the extractant is in full contact with the aqueous solution to play an extraction role. When the height of the extractant rises to the position of the branch pipe of the extraction bottle, the extractant containing water will flow back to the flask through the branch pipe of the extraction bottle, forming a use cycle of the extractant.

[0005] The existing extraction device has the following problems: the extractant vapor must flow to the extraction bottle through the extraction bottle branch pipe, and the extractant liquid containing water must also flow back to the flask through the extraction bottle branch pipe. The flow direction of the extractant vapor is opposite to the flow direction of the extractant containing water, and they collide with each other, affecting the extraction efficiency; at the same time, after the extractant is condensed into liquid in the condenser, it must flow back to the extraction bottle through the thinner condenser liquid outlet. However, due to the presence of the extractant vapor in the extraction bottle, the extraction bottle is in a positive pressure environment, which will also affect the return efficiency of the extractant liquid flowing from the condenser back to the extraction bottle, and ultimately affect the extraction efficiency. Utility Model Content

[0006] The utility model aims to provide an extraction device for chemical detection, so as to solve the technical problem in the prior art that the extraction agent vapor in the extraction bottle will affect the extraction agent liquid in the condenser to flow to the extraction bottle.

[0007] In order to solve the above technical problems, the technical solution of a chemical detection extraction device in the utility model is as follows:

[0008] A chemical detection extraction device comprises a device support, on which a first support plate, a second support plate, a third support plate, a fourth support plate and a fifth support plate are arranged at intervals from top to bottom, a first flask is arranged on the fourth support plate, a second flask is arranged on the third support plate, an extraction flask is arranged on the second support plate, a condenser is arranged on the first support plate, the lower end of the condenser has a condenser liquid outlet connected to the upper end of the extraction flask, the upper end of the first flask is connected to the condenser through a first pipeline, the pipe interface connecting the first pipeline and the condenser is located on the upper side of the condenser liquid outlet, the upper end of the second flask is connected to the upper end of the extraction flask through a second pipeline, and the lower end of the second flask is connected to the upper end of the first flask through a third pipeline.

[0009] Furthermore, a heating hole is arranged on the lower side of the first flask on the fourth support plate, and an alcohol lamp is arranged on the lower side of the heating hole on the fifth support plate.

[0010] Furthermore, the device bracket includes a vertically arranged bracket rod, the fifth bracket plate is fixed to the bottom of the bracket rod, and one end of the first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate are connected to the bracket rod.

[0011] Furthermore, the first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate are guided and moved in the up and down directions and assembled on the bracket rod, the bracket rod is a threaded rod, and the bracket rod is threadedly connected with height adjustment nuts on the upper and lower sides of the first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate respectively.

[0012] Furthermore, circular connecting holes for sleeve connection to the support rods are formed on the first support plate, the second support plate, the third support plate and the fourth support plate.

[0013] Further, the first bracket plate and the second bracket plate are staggered in the up-down direction, the second bracket plate and the third bracket plate are staggered in the up-down direction, and the third bracket plate and the fourth bracket plate are staggered in the up-down direction.

[0014] Furthermore, the first pipeline is located at the front side of the second bracket plate and the third bracket plate; the second pipeline is located at the front side of the second bracket plate; and the third pipeline is located at the front side of the third bracket plate.

[0015] The beneficial effects of the utility model are as follows: in the utility model, there are two flasks, namely a second flask with a higher height and a first flask with a lower height. When in use, the first flask is heated, and the extractant in the first flask is directly introduced into the condenser through the first pipeline in the form of steam, and is cooled in the condenser to become a liquid extractant, and the liquid extractant is discharged into the extraction bottle through the liquid outlet of the condenser. Since the pipe interface connected to the condenser by the first pipeline is located on the upper side of the liquid outlet of the condenser, the steam will not affect the discharge of liquid from the condenser into the extraction bottle. When the height of the extractant in the extraction bottle is relatively high, the aqueous extractant flows to the second flask through the second pipeline, and the extractant in the second flask flows to the first flask through the third pipeline using the height difference. Although the first flask is in a positive pressure environment, due to the height difference between the second flask and the first flask, the extractant in the second flask can smoothly enter the first flask, thereby ensuring efficient circulation of the extractant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0018] Figure 2 is a schematic diagram of the coordination of the first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate in a top view;

[0019] 1. Height adjustment nut; 2. Support rod; 3. Fifth support plate; 4. Alcohol lamp; 5. Fourth support plate; 6. First flask; 7. Third pipeline; 8. Second flask; 9. Third support plate; 10. Second support plate; 11. Second pipeline; 12. First pipeline; 13. First support plate; 14. Condenser; 15. Extraction bottle; 16. Built-in conical tube; 17. Condenser liquid outlet; 18. Mounting hole; 19. Heating hole. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] In the utility model, an embodiment of a chemical detection extraction device is Figure 1~2 As shown: it includes a device bracket, on which a first bracket plate 13, a second bracket plate 10, a third bracket plate 9, a fourth bracket plate 5 and a fifth bracket plate 3 are arranged in sequence from top to bottom, wherein a vertically arranged bracket rod 2 is fixed to the left end of the fifth bracket plate 3, and the left ends of the first bracket plate 13, the second bracket plate 10, the third bracket plate 9 and the fourth bracket plate 5 are all connected to the bracket rod 2.

[0023] Specifically, the support rod is a threaded rod, and the first support plate 13, the second support plate 10, the third support plate 9 and the fourth support plate 5 are guided and moved along the up and down direction and assembled on the support rod 2. The support rod 2 is a threaded rod, and the support rod is respectively threaded with height adjustment nuts 1 on the upper and lower sides of the first support plate, the second support plate, the third support plate and the fourth support plate. The first support plate, the second support plate, the third support plate and the fourth support plate are provided with circular connection holes for sleeve connection on the support rod. When the corresponding height adjustment nut is loosened, the corresponding support plate can be adjusted in height and rotated around the axis of the support rod. When the corresponding height adjustment nut is tightened, the corresponding support plate can be fixed relative to the support rod.

[0024] A first flask 6 is arranged on the fourth bracket plate 5, a second flask 8 is arranged on the third bracket plate 9, an extraction bottle 15 is arranged on the second bracket plate 10, a built-in conical tube 16 is arranged in the extraction bottle, a mounting hole 18 is arranged on the first bracket plate, a vertically arranged condenser 14 is fixed in the mounting hole 18, the lower end of the condenser 14 has a condenser outlet 17 connected to the upper end of the extraction bottle, the condensation cavity diameter of the condenser is larger than the diameter of the condensate outlet 17, the extraction bottle, the built-in conical tube, the condenser and the flask all belong to the prior art, and their structures are not described in detail.

[0025] The upper end of the first flask is connected to the condensation chamber of the condenser through the first pipeline 12, and the pipe interface connecting the first pipeline 12 and the condenser is located on the upper side of the condenser liquid outlet 17. The upper end of the second flask is connected to the upper end of the extraction bottle 15 through the second pipeline 11, and the lower end of the second flask is connected to the upper end of the first flask through the third pipeline 7. A heating hole 19 is provided on the lower side of the first flask on the fourth bracket plate, and the aperture of the heating hole 19 is smaller than the outer diameter of the first flask. An alcohol lamp 4 is provided on the lower side of the heating hole on the fifth bracket plate.

[0026] In this embodiment, the first bracket plate and the second bracket plate are staggered in the vertical direction, the second bracket plate and the third bracket plate are staggered in the vertical direction, and the third bracket plate and the fourth bracket plate are staggered in the vertical direction. This can facilitate the arrangement of the first pipeline, the second pipeline and the third pipeline without opening holes in the corresponding bracket plates. For example, the first pipeline is located at the front side of the second bracket plate and the third bracket plate; the second pipeline is located at the front side of the second bracket plate; and the third pipeline is located at the front side of the third bracket plate.

[0027] When in use, the first flask is heated by an alcohol lamp, and the extractant in the first flask is heated to become extractant vapor, flows to the condenser through the first pipeline, condenses into liquid in the condenser, and flows to the extraction bottle through the condenser outlet. The pipe interface connecting the first pipeline and the condenser is located on the upper side of the condenser outlet, so the liquid extractant in the condenser can easily flow to the extraction bottle. When the liquid level in the extraction bottle is high, the extractant containing water will flow to the second flask through the second pipeline, and the water-containing extractant in the second flask will flow to the first flask through the third pipeline by gravity.

[0028] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0029] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0030] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An extraction device for chemical detection, characterized in that: The invention comprises a device support, on which a first support plate, a second support plate, a third support plate, a fourth support plate and a fifth support plate are arranged at intervals from top to bottom, a first flask is arranged on the fourth support plate, a second flask is arranged on the third support plate, an extraction flask is arranged on the second support plate, a condenser is arranged on the first support plate, the lower end of the condenser has a condenser liquid outlet connected to the upper end of the extraction flask, the upper end of the first flask is connected to the condenser through a first pipeline, a pipe interface connecting the first pipeline and the condenser is located on the upper side of the condenser liquid outlet, the upper end of the second flask is connected to the upper end of the extraction flask through a second pipeline, and the lower end of the second flask is connected to the upper end of the first flask through a third pipeline.

2. The chemical detection extraction device according to claim 1, characterized in that: A heating hole is arranged on the fourth support plate at the lower side of the first flask, and an alcohol lamp is arranged on the lower side of the heating hole on the fifth support plate.

3. The chemical detection extraction device according to claim 1 or 2, characterized in that: The device bracket comprises a vertically arranged bracket rod, the fifth bracket plate is fixed to the bottom of the bracket rod, and one end of the first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate is connected to the bracket rod.

4. The chemical detection extraction device according to claim 3, characterized in that: The first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate are guided and moved in the up and down directions and assembled on the bracket rod. The bracket rod is a threaded rod. The bracket rod is threadedly connected with height adjustment nuts on the upper and lower sides of the first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate respectively.

5. The chemical detection extraction device according to claim 4, characterized in that: The first bracket plate, the second bracket plate, the third bracket plate and the fourth bracket plate are provided with circular connecting holes for sleeve connection to the bracket rod.

6. The chemical detection extraction device according to claim 5, characterized in that: The first bracket plate and the second bracket plate are staggered in the up-down direction, the second bracket plate and the third bracket plate are staggered in the up-down direction, and the third bracket plate and the fourth bracket plate are staggered in the up-down direction.

7. The chemical detection extraction device according to claim 6, characterized in that: The first pipeline is located at the front side of the second bracket plate and the third bracket plate; the second pipeline is located at the front side of the second bracket plate; and the third pipeline is located at the front side of the third bracket plate.

Images