CN214654749U

CN214654749U - Volatile oil extraction separator with lining pipe

Info

Publication number: CN214654749U
Application number: CN202120168651.7U
Authority: CN
Inventors: 苏国岁; 李杰辉; 姜丽; 阎瑾; 张晓静; 何爱民; 卜一凡; 张艳芳; 戴亚; 沈薇; 王龙; 李远根
Original assignee: HEBEI CHINA TOBACCO INDUSTRY CO LTD
Current assignee: HEBEI CHINA TOBACCO INDUSTRY CO LTD
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-11-09
Anticipated expiration: 2031-01-21

Abstract

The invention discloses a volatile oil extraction separator with a lining pipe, which comprises an extractor assembled on a distillation flask, wherein the bottom end of the separating pipe of the extractor is a blind end, the lining pipe made of polytetrafluoroethylene or a glass lining pipe with a polytetrafluoroethylene coating on the inner wall is sleeved in the separating pipe, the lining pipe is provided with an opening, the bottom end of the lining pipe is sleeved with a plunger, the lining pipe is tightly matched with the plunger, the bottom of the plunger is radially expanded, and the diameter of the expanded end is not less than the outer diameter of the lining pipe. The invention can greatly reduce wall sticking loss, improve oil yield, make up the defects of wall sticking loss of the volatile oil of the glass volatile oil extraction separator, inconvenient oil extraction operation and the like, is more convenient in oil extraction operation and more accurate in metering, has obvious effect when extracting materials with high and medium viscosity of the volatile oil, and has simple and reasonable structure, convenient use and strong operability. The oil yield can be improved to 97% from 32%, the oil yield is improved to 99% from 88% when the mint is extracted, and the effect is more obvious when the volatile oil with low oil yield and high viscosity is extracted.

Description

Volatile oil extraction separator with lining pipe

Technical Field

The invention belongs to the technical field of chemical extraction, and particularly relates to a device for extracting volatile oil from plant raw materials.

Background

Volatile oils, also known as essential oils, are compounds that have a fragrance and that can be distilled off with steam without being miscible with water. Most of the volatile oil is colorless or yellowish oily transparent liquid lighter than water, the components are complex, monoterpene, sesquiterpene and oxygenated derivatives thereof are mainly used, the boiling point is not fixed, and the boiling range is 70-300 ℃.

The conventional volatile oil separator is made of 95-material glass, has relatively high surface energy and is easy to adhere volatile oil. At the end of the separation process, the temperature of the volatile oil at the oil-water separation interface gradually decreases from about 70 ℃ during collection, the viscosity increases, and the fluidity deteriorates. When the volatile oil is taken from the oil discharge port, the volatile oil needs to flow from the oil-water separation interface to the oil discharge port, the flow is long, the area contacting the inner wall of the glass tube is greatly increased, and the wall adhesion loss is increased; if the oil is absorbed from the upper part of the separation tube, the volatile oil floats on the water surface, the retention position is deep, the space is narrow, the oil extraction operation is very inconvenient, and the volatile oil attached to the inner wall of the glass tube cannot be absorbed. The above disadvantages are particularly significant in the impact on oil yield when extracting low oil yield materials.

Wall sticking loss during oil extraction leads to reduction of oil yield and increase of production cost, and meanwhile, judgment of the relation between the oil yield and extraction parameters is influenced, and when the volatile oil extraction separator uses glass materials and releases volatile oil from the lower part, the contact surface between the volatile oil and the glass is greatly increased, so that improvement of the volatile oil separation device with the unreasonable structure becomes an urgent problem to be solved.

Disclosure of Invention

The invention provides a volatile oil extraction separator with an inner lining pipe, aiming at the defects of the existing volatile oil extraction separator.

In order to realize the purpose of the invention, the volatile oil extraction separator with the lining pipe comprises an extractor assembled on a distillation flask, and is characterized in that the bottom end of the separation pipe of the extractor is a blind end, the separation pipe is internally sleeved with a polytetrafluoroethylene lining pipe or a glass lining pipe of which the inner wall is provided with a polytetrafluoroethylene coating, the pipe wall of the polytetrafluoroethylene lining pipe or the glass lining pipe is provided with an opening, the bottom end of the polytetrafluoroethylene lining pipe or the glass lining pipe is sleeved with a plunger, the polytetrafluoroethylene lining pipe or the glass lining pipe is tightly matched with the plunger, the bottom of the plunger is radially expanded, and the diameter of the expanded end is not less than the outer diameter of the polytetrafluoroethylene lining pipe or the glass lining pipe.

The upper part of the plunger is provided with a sealing rubber ring.

The invention achieves the technical progress that:

1. according to the invention, through adopting the polytetrafluoroethylene material which has very low surface energy and is hydrophobic and oleophobic at the contact interface with the volatile oil, the wall adhesion loss can be greatly reduced, and the oil yield of the volatile oil is improved.

2. The glass lining pipe or the semitransparent polytetrafluoroethylene lining pipe which can be taken out is sleeved in the separation pipe, and as the polytetrafluoroethylene which is in contact with the volatile oil has excellent chemical stability, very low surface energy and excellent ageing resistance, has moderate hardness and easy processing, can still keep excellent mechanical property at 260 ℃, the surface of the polytetrafluoroethylene is hydrophobic and oleophobic, and is applied to the volatile oil extraction separator, the defects of wall adhesion loss, inconvenient oil extraction operation and the like of the volatile oil of the existing glass volatile oil extraction separator can be overcome, the oil extraction operation is more convenient, the measurement is more accurate, the effect is remarkable when the volatile oil is extracted into high-viscosity and medium-viscosity materials, the structure is simple and reasonable, the use is convenient, and the operability is strong.

3. Compared with the conventional volatile oil extraction separator specified in the XD in the appendix of Chinese pharmacopoeia, the extraction separator can more conveniently and efficiently carry out the volatile oil extraction operation, and the extracted volatile oil can be basically and completely removed, thereby improving the oil yield of the volatile oil. If the extraction separator is adopted to extract the volatile oil from the cut tobacco of a certain brand, the maximum adding amount of the cut tobacco is 250g when a distillation flask with the volume of 5000mL is adopted and the material ratio of 10:1 is adopted, the oil yield of the volatile oil of the cut tobacco is 0.1%, the oil yield of the volatile oil is 0.25g, the oil yield of the volatile oil of the conventional volatile oil extraction separator is 0.08g, the oil yield of the volatile oil is 0.24g, the oil yield of the volatile oil is improved from 32% to 97%, and is improved by 65%; when the mint with the volatile oil extraction rate of 1.55% is extracted, the oil yield of the volatile oil is 3.41g by adopting a conventional volatile oil extraction separator, the oil yield is 3.84g by adopting the method, and the oil yield of the volatile oil is improved from 88% to 99% and is improved by 11%; therefore, the invention effectively improves the oil yield of the volatile oil, and has more obvious effect when the volatile oil with low oil yield and high viscosity is extracted.

Drawings

FIG. 1 is a schematic diagram of an extractor separator according to the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

FIG. 3 is a schematic diagram of the structure of the present invention for obtaining the volatile oil.

Detailed Description

The invention is further described with reference to specific examples.

Example 1: the invention is an improvement to the existing conventional volatile oil extraction separator, as shown in figure 1 and figure 2, the improved volatile oil extraction separator with a lining pipe comprises an extractor assembled on a distillation flask 1, the bottom end of the separating pipe 3 of the extractor is a blind end, a polytetrafluoroethylene semitransparent lining pipe 4 is sleeved in the separating pipe 3, a gap of not more than 0.6mm is preferably kept between the lining pipe 4 and the separating pipe 3, when water is injected into the separating pipe 3, a simple water seal can be formed between the inner wall of the separating pipe 3 and the outer wall of the lining pipe 4, an opening 7 is arranged on the pipe wall of the lining pipe 4, a plunger 2 is sleeved at the bottom end of the polytetrafluoroethylene lining pipe 4, the polytetrafluoroethylene lining pipe 4 is tightly matched with the plunger 2, or a sealing rubber ring 6 is arranged at the upper part of the plunger 2, and the arranged sealing rubber ring 6 is tightly matched with the polytetrafluoroethylene lining pipe 4 to realize the sealing effect, the plunger 2 can be easily pushed and pulled in the polytetrafluoroethylene lining pipe 4, when the plunger 2 is in the position shown in figure 3, namely the open hole 7 is blocked, the pipe body of the lining pipe 4 is filled with water, the pipe body 4 is held by a hand and vertically hung for 30s, the plunger 2 does not generate displacement, the bottom of the plunger 2 radially expands, and the diameter of the expanded end is not smaller than the outer diameter of the polytetrafluoroethylene lining pipe 4.

Example 2: the difference between this embodiment and embodiment 1 is that a glass tube with a semitransparent teflon coating on the inner wall is sleeved in the separation tube 3, i.e. the lining tube 4 is a glass tube with a semitransparent teflon coating on the inner wall.

Before distilling materials, firstly, a plunger 2 at the bottom of an inner lining pipe 3 is placed in a collecting state as shown in figure 2, the inner lining pipe 4 is placed into a separation pipe 3 by an auxiliary tool, after the inner lining pipe 4 is properly rotated to enable an opening 7 on the side wall of the inner lining pipe 4 to correspond to a water inlet of an overflow pipe 5, water is added from an inlet at the top of the separation pipe 3 along the inner wall of the separation pipe, and the water is added until the water can overflow from the overflow pipe 5 connected with the separation pipe 3 to enter a distillation flask 1. Then, a condenser tube is connected to the top end of the separation tube 3 according to the distillation operation flow, and distillation extraction is performed. After the distillation process is finished, the upper edge of the lining tube 4 is pressed downwards by an auxiliary tool, so that the plunger 2 at the bottom of the lining tube completely enters the lining tube 4, the sealing rubber ring 6 on the plunger 2 is positioned above the opening 7, the bottom end of the lining tube 4 is contacted with the upper surface of the radial expansion end at the bottom of the plunger 2 at the same time, namely, the state of taking volatile oil is shown in figure 3, then the auxiliary tool is extended into the lining tube 4 to take out the lining tube 4, and the taking-out process needs to be careful to avoid the auxiliary tool from touching the volatile oil.

Slowly pulling out the plunger 2 from the lining pipe 4 to make the water in the lower layer of the volatile oil in the lining pipe 4 flow out from the opening 7 to obtain the volatile oil in the lining pipe 4. For the volatile oil with medium and high viscosity, taking out the volatile oil with medium and high viscosity from the upper opening of the lining pipe 4 by a hard polytetrafluoroethylene scraper or other oleophobic tools through the upper opening of the lining pipe 4; for the volatile oil with low viscosity and good fluidity, the lining pipe 4 is inclined, and the plunger 2 is slowly pulled out and then discharged from the opening 7.

Claims

1. The volatile oil extraction separator with the lining pipe comprises an extractor assembled on a distillation flask, and is characterized in that the bottom end of the separation pipe of the extractor is a blind end, a polytetrafluoroethylene lining pipe or a glass lining pipe with a polytetrafluoroethylene coating on the inner wall is sleeved in the separation pipe, the lining pipe is movably connected with the separation pipe, a gap between the lining pipe and the separation pipe is not more than 0.6mm, the pipe wall of the polytetrafluoroethylene lining pipe or the glass lining pipe is provided with an opening, the bottom end of the polytetrafluoroethylene lining pipe or the glass lining pipe is sleeved with a plunger, the polytetrafluoroethylene lining pipe or the glass lining pipe is tightly matched with the plunger, the bottom of the plunger radially expands, and the diameter of the expanded end is not less than the outer diameter of the polytetrafluoroethylene lining pipe or the glass lining pipe.