Device for extracting allelochemicals from withered and fallen leaves of trees

Abstract

The utility model discloses a tree withered and fallen leaf allelochemical extracting device which comprises an extracting bottle, an extracting pipe arranged above the extracting bottle and a condensing device arranged above the extracting pipe, and the outer side wall of the extracting pipe is communicated with the extracting bottle through a connecting pipe and a siphon. Connecting pipes are arranged on the side wall of the bottom of the extraction pipe and the side wall of the extraction bottle, and the two ends of the siphon are detachably connected with the connecting pipes; wherein connecting plugs are arranged on the front end faces of the two ends of the siphon, through holes allowing the siphon to penetrate through are formed in the connecting plugs, and the outer side walls of the connecting plugs are tightly matched with the inner side wall of the connecting pipe. The extraction bottle and the extraction pipe in the extraction device are both provided with the connecting pipes, the connecting pipes are detachably connected with the siphon, the extraction device is convenient to mount and dismount, meanwhile, the maintenance cost of the device is reduced, the connecting plugs at the two ends of the siphon ensure the sealing performance of the device during use, and the reliability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of laboratory instruments and equipment, and more specifically, to a device for extracting allelopathic substances from dead and fallen leaves of trees. Background Art

[0002] Most fruit trees are perennial, with a growth cycle of several years or even more than ten years. With the increase of cultivation years, they continuously release secondary metabolites, namely allelopathic substances, into the environment, and gradually accumulate in the underground parts of the plants (roots or tubers), causing changes in the soil microenvironment and having a huge impact on the growth of neighboring plants. This impact is called allelopathic autotoxicity. Different fruit trees produce different contents of allelopathic substances in their fallen leaves. The allelopathic substances in the fallen leaves of fruit trees are extracted by water extraction. The existing water extraction method generally uses a Soxhlet extraction device.

[0003] During the use of the existing ordinary Soxhlet extractor, the siphon tube is set on the outside of the extraction tube, and the diameter of the siphon tube is too thin. At the same time, there is no external protection. During the cleaning of the Soxhlet extractor, it is easy to cause the siphon tube to be damaged, resulting in the experimental device being unusable. For example, the siphon tube set on the outside of the Soxhlet extractor disclosed in patent number CN201920922537.1 is an integrated structure of the siphon tube and the extraction tube, and the wall of the siphon tube is relatively thin and small. During use, the siphon tube is accidentally damaged, resulting in the inability to carry out the entire extraction experiment. The only option is to replace the entire extraction tube, which increases the maintenance cost. Utility Model Content

[0004] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages to be described below.

[0005] In order to achieve these purposes and other advantages according to the utility model, a device for extracting allelopathic substances from tree dead leaves is provided, comprising an extraction bottle, an extraction tube arranged above the extraction bottle, and a condensing device arranged above the extraction tube. The outer side wall of the extraction tube is connected to the extraction bottle through a connecting tube and a siphon tube. The bottom side wall of the extraction tube and the side wall of the extraction bottle are both provided with connecting tubes, and both ends of the siphon tube are detachably connected to the connecting tubes.

[0006] Wherein, the front end surfaces of both ends of the siphon tube are provided with connecting plugs, the connecting plugs are provided with through holes for the siphon tube to pass through, and the outer side wall of the connecting plug is tightly matched with the inner side wall of the connecting tube.

[0007] Preferably, a filter cartridge for placing the extract is provided in the extraction tube;

[0008] Among them, the inner wall of the extraction tube is provided with multiple steps, the upper end of the filter cartridge is in contact with the upper step surface of the extraction tube, and the lower end of the filter cartridge extends into the extraction tube.

[0009] Preferably, it further comprises: a filter layer disposed in the extraction tube, wherein the filter layer is located below the filter cartridge;

[0010] Wherein, both sides of the filter layer are in contact with the lower step surface of the extraction tube.

[0011] Preferably, the shape of the filter cartridge matches the shape of the inner wall of the extraction tube, and a plurality of through holes are formed at the bottom of the filter cartridge.

[0012] The utility model includes at least the following beneficial effects: the extraction bottle and the extraction tube in the extraction device of the utility model are both provided with connecting tubes, and the connecting tubes are detachably connected to the siphon tube, which facilitates the installation and disassembly of the extraction device and reduces the maintenance cost of the device. The connecting plugs at both ends of the siphon tube ensure the sealing of the device when in use and improve the reliability of the device.

[0013] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the extraction device of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the extraction tube and the siphon tube in the extraction device;

[0016] Figure 3 This is a schematic diagram of the siphon structure of the utility model.

[0017] Markings in the figure: 1. extraction bottle, 2. extraction tube, 21. step, 3. condensation device, 4. connecting pipe, 5. siphon tube, 51. connecting plug, 6. filter cartridge, 7. filter layer, 8. connecting pipe. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0019] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0020] It should be noted that in the description of the present invention, the orientation or position relationship indicated by the term is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0022] In addition, in the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Figure 1 The utility model shows a device for extracting allelopathic substances from tree dead leaves, comprising an extraction bottle 1, an extraction tube 2 arranged above the extraction bottle 1, and a condensation device 3 arranged above the extraction tube 2. The outer wall of the extraction tube 2 is connected to the extraction bottle 1 through a connecting tube 4 and a siphon tube 5. The bottom side wall of the extraction tube 2 and the side wall of the extraction bottle 1 are both provided with connecting tubes 8. Both ends of the siphon tube 5 are detachably connected to the connecting tubes 8.

[0024] The front end surfaces of both ends of the siphon tube 5 are provided with connecting plugs 51 , and the connecting plug 51 is provided with a through hole for the siphon tube 5 to pass through. The outer wall of the connecting plug 51 is tightly matched with the inner wall of the connecting tube 8 .

[0025] Working principle:

[0026] The working principle of the allelopathic substance extraction device of tree dead leaves is mainly based on the siphon effect and condensation technology, and the extraction and collection of allelopathic substances are realized through the synergistic effect of multiple steps. First, the steam generated by the solvent after boiling rises through the connecting pipe 4, and the steam is converted into liquid by the condensing device 3 and dripped into the extraction tube 2. The substance in the extraction sample tube. When the liquid level in the extraction tube 2 exceeds the highest point of the siphon tube 5, the siphon effect generated by the siphon tube 5 is utilized, and the solution flows back into the extraction bottle 1 to extract the allelopathic substances in the extract. By continuously repeating the above process, the allelopathic substances in the extract are continuously extracted by the pure solvent, which not only saves solvent but also improves the extraction efficiency. Through the detachably connected siphon tube 5, the connecting plugs 51 at both ends of the siphon tube 5 are tightly matched with the connecting tube 8. In this process, when the siphon tube 5 is damaged during the extraction process, the siphon tube 5 can be replaced in time, which reduces the maintenance cost. At the same time, the connecting plug 51 and the connecting tube 8 are tightly matched to ensure the tightness of the connection and prevent solvent leakage.

[0027] In the above scheme, the extraction tube 2 is provided with a filter cartridge 6 for placing the extract;

[0028] The inner wall of the extraction tube 2 is provided with multiple steps 21, the upper end of the filter cartridge 6 abuts against the upper step 21 of the extraction tube 2, and the lower end of the filter cartridge 6 extends into the extraction tube 2. With this technical method, the steps 21 provided in the extraction tube 2 facilitate fixing the position of the filter cartridge 6 to prevent it from moving or tilting during the extraction process. During the operation, the material to be extracted is placed in the filter cartridge 6, and then the solvent is added to the extraction tube 2. Through heating and reflux, the solvent is constantly in contact with the solid material.

[0029] The required extracting substances are dissolved. This avoids the damage of the filter paper wrapping the materials, which causes part of the materials to enter the extracted allelopathic substances, interfering with the subsequent weighing calculation of the allelopathic substances.

[0030] The above scheme also includes: a filter layer 7 arranged in the extraction tube 2, and the filter layer 7 is located below the filter cartridge 6; wherein the two sides of the filter layer 7 are in contact with the surface of the lower step 21 of the extraction tube 2. With this technical method, the step 21 arranged in the extraction tube 2 is also convenient for fixing the position of the filter layer 7. In actual operation, the two sides of the filter layer 7 are clamped at the step 21 of the extraction tube 2 to complete the position limitation of the filter layer 7. The filter layer 7 can further optimize the effect of separating the solvent from the substance to be extracted. When the leached solvent passes through the filter layer 7, the solid material is more effectively trapped between the filter layer 7 and the filter cartridge 6, preventing the solid material from entering the subsequent solvent diversion channel. This can improve the extraction efficiency and purity, while reducing the interference of solid materials on subsequent processing links.

[0031] In the above scheme, the shape of the filter cartridge 6 matches the shape of the inner wall of the extraction tube 2, and a plurality of through holes are provided at the bottom of the filter cartridge 6. With this technical method, the shape of the filter cartridge 6 matches the shape of the inner wall of the extraction tube 2, which ensures that the filter cartridge 6 is stably and tightly placed in the extraction tube 2. A plurality of through holes are provided at the bottom of the filter cartridge 6, which allow the solvent to pass through but retain the solid material. In this way, the solvent can smoothly contact the solid material through the through holes, thereby enhancing the extraction effect. The extraction process is kept continuous and stable.

[0032] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A device for extracting allelopathic substances from tree dead leaves, comprising an extraction bottle, an extraction tube arranged above the extraction bottle, and a condensation device arranged above the extraction tube, wherein the outer wall of the extraction tube is connected to the extraction bottle through a connecting tube and a siphon tube, and characterized in that: The bottom side wall of the extraction tube and the side wall of the extraction bottle are both provided with connecting pipes, and both ends of the siphon tube are detachably connected to the connecting pipes; Wherein, the front end surfaces of both ends of the siphon tube are provided with connecting plugs, the connecting plugs are provided with through holes for the siphon tube to pass through, and the outer side wall of the connecting plug is tightly matched with the inner side wall of the connecting tube.

2. The device for extracting allelopathic substances from tree dead leaves according to claim 1, characterized in that: The extraction tube is provided with a filter cartridge for placing the extract; Among them, the inner wall of the extraction tube is provided with multiple steps, the upper end of the filter cartridge is in contact with the upper step surface of the extraction tube, and the lower end of the filter cartridge extends into the extraction tube.

3. The device for extracting allelopathic substances from tree dead leaves according to claim 2, characterized in that: Also includes: A filter layer is arranged in the extraction tube, and the filter layer is located below the filter cartridge; Wherein, both sides of the filter layer are in contact with the lower step surface of the extraction tube.

4. The device for extracting allelopathic substances from tree dead leaves according to claim 2, characterized in that: The shape of the filter cartridge matches the shape of the inner wall of the extraction tube, and a plurality of through holes are formed at the bottom of the filter cartridge.

Images