Enrichment device for volatile organic compounds in Fuzhuan tea

Abstract

The utility model relates to a device for enriching volatile organic compounds in Fuzhuan tea, which belongs to the field of tea detection and comprises an outer package, a draught hood and an air extractor. The outer package is used for tightly wrapping the Fuzhuan tea formed by the Fuzhuan tea, a first through hole is formed in the upper surface of the outer package, a second through hole is formed in the lower surface of the outer package, the first through hole is filled with a volatile organic compound collecting piece attached to the inner wall of the first through hole, and the second through hole is filled with non-woven fabric attached to the inner wall of the second through hole; the lower end of the draught hood is connected to the upper surface of the outer package in a sealed mode, the air inlet end of the air extractor is connected with the air outlet end of the draught hood in a sealed mode, and the air inlet end of the draught hood is communicated with the volatile organic compound collecting piece. The enrichment of the volatile organic compounds in the Fuzhuan tea can be rapidly completed, and rapid inspection and detection by using a spectrum instrument in the later period are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of tea detection, concretely relates to a kind of enrichment device of volatile organic compounds in brick tea. BACKGROUND

[0002] Tea is one of the world's three major drinks, contains a variety of health components, such as tea polyphenols and catechins, polysaccharides, flavonoids, caffeine, amino acids, etc., not only rich in nutrients, but also outstanding health care function.Tea has characteristics such as rich varieties, diverse processing technology and obvious regional characteristics.Bricks tea is a kind of compressed fermented tea, which is usually made of black tea as raw material during the manufacturing process, and then is subjected to pile fermentation and steaming treatment, and then is compressed into blocks, and then is fermented under suitable temperature and humidity, and finally is dried and aged to form qualified bricks tea.Bricks tea has the characteristics of flat brick surface, black and oily color, golden flowers in the brick, red and thick soup color after brewing, rich fungus aroma and pure aroma.However, during the production of bricks tea, due to improper processing technology control, improper aging storage conditions or other reasons, bricks tea may be mouldy and deteriorated, which has a great influence on the aroma and taste quality of bricks tea.

[0003] The volatile organic compounds in bricks tea are the main components affecting the aroma quality of bricks tea, and by analyzing the composition and content of volatile organic compounds in bricks tea, it can be determined whether the aroma quality of bricks tea is abnormal, and then it can be identified whether bricks tea is mouldy and deteriorated.At present, in order to detect the volatile organic compounds in bricks tea, bricks tea needs to be crushed for analysis, because the mouldy position is mostly in the interior of bricks tea, and this method not only consumes time and effort, but also causes damage to bricks tea and packaging materials, which affects the continued sales of products.If the volatile organic compounds in bricks tea can be enriched first, and then rapidly detected by spectroscopic instrument, it is more convenient and fast, and it is less affected by subjective factors, so it has higher accuracy.

[0004] At present, the enrichment device for volatile organic compounds in tea mainly concentrates on the aroma detection of tea base and tea soup, such as the utility model patent with application number 202220153103.1 and the name of "a kind of enrichment device for volatile aroma substances in tea", which can simultaneously detect the aroma of tea base and tea soup, ensure that the sample detection sequence will not be chaotic, and avoid the loss of aroma during the separation process of tea soup, but it is not suitable for the enrichment of volatile organic compounds in bricks tea which is compressed into blocks. CONTENT OF UTILITY MODEL

[0005] In view of the deficiencies in the prior art, the utility model provides an enrichment device for volatile organic compounds in bricks tea to solve the problem that the current enrichment device cannot be applied to the enrichment of volatile organic compounds in bricks tea which is compressed into blocks, and the enrichment of volatile organic compounds in bricks tea can be quickly completed, which is beneficial to rapid detection by spectroscopic instrument in the later stage.

[0006] This utility model is achieved through the following technical solution:

[0007] A device for enriching volatile organic compounds in Fu brick tea includes an outer packaging, an exhaust hood, and an exhaust system.

[0008] The outer packaging is used to tightly wrap the Fu brick tea. A first through hole is opened in the upper surface of the outer packaging, and a second through hole is opened in the lower surface of the outer packaging. The first through hole is filled with a volatile organic compound collecting sheet that adheres to its inner wall, and the second through hole is filled with non-woven fabric that adheres to its inner wall.

[0009] The lower end of the exhaust hood is sealed to the upper surface of the outer packaging. The air inlet of the exhaust device is sealed to the air outlet of the exhaust hood. The air inlet of the exhaust hood is connected to the volatile organic compound collection plate.

[0010] The further improvement of this utility model is as follows:

[0011] The outer packaging is rectangular in shape, and the volatile organic compound (VOC) collection plate is circular, with the center of the VOC collection plate coinciding with the center of the upper surface of the outer packaging.

[0012] The volatile organic compound collecting plate has uniformly distributed vent holes, which are symmetrically distributed radially on the volatile organic compound collecting plate.

[0013] The second through hole is rectangular, and the center of the second through hole coincides with the center of the lower surface of the outer packaging. The inner wall of the second through hole is set close to the outer edge of the lower surface of the outer packaging.

[0014] The width of the second through hole is 0.8 to 0.9 times the width of the outer packaging.

[0015] The exhaust hood includes a first support plate and a first cover body with an integral structure. The lower surface of the first support plate has a first slot that is sealed and inserted into the upper surface of the outer packaging. The first slot is sealed and inserted into the upper surface of the outer packaging. The upper end of the first cover body is the exhaust end of the exhaust hood. The first support plate has a third through hole. The lower end of the first cover body is smoothly connected to the upper end of the inner wall of the third through hole. The third through hole communicates with the vent.

[0016] The first cover is frustum-shaped, with its diameter gradually decreasing from bottom to top.

[0017] The inner wall of the third through hole is located directly above the outer edge of the volatile organic compound collection plate.

[0018] It also includes an air supply hood with the same shape as the exhaust hood. The air supply hood has a second support plate corresponding to the first support plate and a second hood body corresponding to the first hood body. The second support plate and the second hood body are distributed vertically. The upper surface of the second support plate has a second slot that is sealed and inserted into the lower surface of the outer packaging. The second slot is sealed and inserted into the lower surface of the outer packaging. The second support plate has a fourth through hole. The upper end of the second hood body is smoothly connected to the lower end of the inner wall of the fourth through hole. The lower end of the second hood body is sealed and connected to the air outlet of the blower.

[0019] The fourth through hole has the same inner diameter as the third through hole, and the center of the fourth through hole and the center of the third through hole are symmetrically distributed along the central axis of the outer packaging height direction.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] This invention relates to a device for enriching volatile organic compounds (VOCs) in Fu brick tea. The outer packaging tightly encloses the Fu brick tea. The VOC collection plates and non-woven fabric arranged on the outer packaging allow for material exchange with the external environment, meeting the oxygen and humidity requirements of the Fu brick tea during fermentation and maintaining suitable fermentation conditions inside the packaging. The non-woven fabric and VOC collection plates have good air permeability and can serve as air inlets and outlets, respectively. The air extraction device draws air from the outlet of the exhaust hood, causing the airflow to enter through the lower non-woven fabric and exit through the upper VOC collection plates. This ultimately enriches the VOCs on the collection plates, facilitating rapid detection using spectrometers. This device enables rapid enrichment of VOCs in Fu brick tea and facilitates rapid, non-destructive spectroscopic detection of mold growth. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the outer packaging and volatile organic compound collection plate in the enrichment device of this utility model.

[0023] Figure 2 This is a schematic diagram of the outer packaging and nonwoven fabric in the enrichment device described in this utility model.

[0024] Figure 3 for Figure 1 A schematic diagram of the internal structure.

[0025] Figure 4 This is a schematic diagram of the enrichment device of this utility model after the gas delivery hood has been removed.

[0026] Figure 5 This is a diagram showing the airflow direction in the enrichment device described in this utility model.

[0027] Figure 6 for Figure 4 A cross-sectional view along the width of the outer packaging.

[0028] Figure 7 for Figure 4 A cross-sectional view along the length of the outer packaging.

[0029] Figure 8 This is a schematic diagram of the structure of the exhaust hood in the enrichment device of this utility model.

[0030] Figure 9 This is a three-dimensional structural diagram of the enrichment device described in this utility model.

[0031] Figure 10 for Figure 9 A sectional view.

[0032] In the diagram: 1-outer packaging, 2-exhaust hood, 3-Fu brick tea, 4-volatile organic compound collection plate, 5-non-woven fabric, 6-ventilation hole, 7-first support plate, 8-first cover body, 9-first slot, 10-second support plate, 11-second cover body, 12-second slot. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The description is for explanation and not limitation of the present invention.

[0034] This utility model discloses a device for enriching volatile organic compounds in Fu brick tea, such as... Figure 4 As shown, it includes outer packaging 1, exhaust hood 2 and exhaust equipment. Outer packaging 1 is conventional packaging paper that meets the packaging requirements of Fu brick tea, such as kraft paper, which is used as packaging during the fermentation process of Fu brick tea.

[0035] like Figure 3 As shown, the outer packaging 1 tightly wraps the Fu brick tea 3, as... Figure 1 As shown, a first through-hole is formed in the upper surface of the outer packaging 1. The first through-hole is filled with a volatile organic compound (VOC) collecting plate 4 that adheres to its inner wall. The thickness of the VOC collecting plate 4 is the same as that of the outer packaging 1, and the upper end of the VOC collecting plate 4 is flush with the upper surface of the outer packaging 1. Various materials capable of adsorbing VOCs can be used, such as cellulose membranes. Figure 2 As shown, a second through hole is provided in the lower surface of the outer packaging 1. The second through hole is filled with non-woven fabric 5 that adheres to its inner wall. The thickness of the non-woven fabric 5 is the same as that of the outer packaging 1. The lower end of the non-woven fabric 5 is flush with the lower surface of the outer packaging 1. The outer packaging 1, the volatile organic compound collecting plate 4, and the non-woven fabric 5 are a single unit. The lower end of the exhaust hood 2 is sealed to the upper surface of the outer packaging 1. The air inlet of the exhaust device is sealed to the air outlet of the exhaust hood 2. The air inlet of the exhaust hood 2 is connected to the volatile organic compound collecting plate 4.

[0036] Specifically, such as Figure 8 andFigure 9 As shown, the exhaust hood 2 comprises a first support plate 7 and a first cover body 8 in one structure, the lower surface of the first support plate 7 is provided with a first clamping groove 9 which is sealingly inserted into the upper surface of the outer package 1, the upper end of the first cover body 8 is the air outlet end of the exhaust hood 2, and the first support plate 7 is provided with a third through hole. Figure 6 And Figure 7 As shown, the lower end of the first cover body 8 is smoothly connected to the upper end of the inner wall of the third through hole, and the third through hole is communicated with the air hole 6.

[0037] The first cover body 8 is circular truncated cone-shaped, and the caliber gradually decreases from bottom to top. The inner wall of the third through hole is located directly above the outer edge of the volatile organic compound collecting sheet 4. As shown, Figure 5 As shown, the outer package 1 is tightly wrapped with the brick tea 3 during fermentation, and during the enrichment process through collection, the air is forced to be reduced when flowing through the first cover body 8 by means of air extraction equipment, the air flow enters the non-woven fabric 5 arranged below the outer package 1, contacts the brick tea 3, carries the volatile organic compounds in the brick tea 3, and is forced to pass through the volatile organic compound collecting sheet 4 to adsorb the volatile organic compounds in the brick tea 3, so that the volatile organic compounds are enriched on the volatile organic compound collecting sheet 4 through a long time of treatment, so as to facilitate subsequent detection.

[0038] The outer package 1 is a cuboid, the volatile organic compound collecting sheet 4 is preferably circular, the volatile organic compound collecting sheet 4 is provided with uniformly distributed air holes 6, the air holes 6 are radially symmetrically distributed on the volatile organic compound collecting sheet 4, so that the enrichment of volatile organic compounds is more uniform, the diameter is 1 / 4-1 / 3 of the width of the outer package 1, and the center of the volatile organic compound collecting sheet 4 coincides with the center of the upper surface of the outer package 1.

[0039] The second through hole is rectangular, the center of which coincides with the center of the lower surface of the outer package 1, and the inner wall of the second through hole is arranged close to the outer edge of the lower surface of the outer package 1. Specifically, the width of the second through hole is 0.8-0.9 times the width of the outer package 1, so that the volatile organic compounds in the brick tea 3 can be carried to the maximum extent.

[0040] In order to improve the collection purity of volatile organic compounds, the enrichment device of the utility model further comprises a gas conveying cover which is the same in shape as the exhaust hood 2, as shown, Figure 10As shown, the second support plate 10 corresponding to the first support plate 7 in the gas delivery cover is the second support plate 10, and the second cover body 11 corresponding to the first cover body 8 is the second cover body 11. The second support plate 10 and the second cover body 11 are distributed up and down, the upper surface of the second support plate 10 is provided with a second clamping groove 12, the second clamping groove 12 can be sealingly inserted and matched with the lower surface of the outer packaging 1, the second clamping groove 12 is sealingly inserted into the lower surface of the outer packaging 1, the fourth through hole is provided on the second support plate 10, the upper end of the second cover body 11 is smoothly connected with the lower end of the inner wall of the fourth through hole, and the lower end of the second cover body 11 is sealingly connected with the air outlet end of the air blower. The air blower blows nitrogen into the non-woven fabric 5, and the airflow leaves through the upper volatile organic compound collection sheet 4, so that the volatile organic compounds remain on the volatile organic compound collection sheet 4.

[0041] The fourth through hole has the same inner diameter as the third through hole, and the center of the fourth through hole and the center of the third through hole are symmetrically distributed along the central axis in the height direction of the outer packaging 1, which is beneficial to the faster and symmetric diffusion of nitrogen into the brick tea 3.

[0042] The utility model discloses a kind of enrichment devices of volatile organic compounds in brick tea, and specific use process is as follows:

[0043] Step 1, take existing tea, according to existing operation mode of brick tea, scattered tea is placed in packaging 1, and according to existing operation method, compaction and fermentation are carried out, during fermentation, non-woven fabric 5 and volatile organic compound collection sheet 4 are all with external environment Organic exchange can always maintain the environment in outer packaging 1 suitable for fermentation of brick tea 3.

[0044] Step 2, when volatile organic compound detection in brick tea 3 is needed after fermentation of brick tea 3 is completed, air extraction equipment (such as jet type air extractor or volumetric vacuum pump) is sealingly connected with first cover body 8, air extraction is carried out from volatile organic compound collection sheet 4 on the upper side, so that airflow flows from non-woven fabric 5 on the lower side, and finally volatile organic compounds remain on volatile organic compound collection sheet 4 to facilitate subsequent detection.

[0045] When it is needed to improve the collection purity of volatile organic compounds, the air outlet end of the air blower is sealingly connected with the lower end of the second cover body 11, the air blower blows nitrogen into non-woven fabric 5, and after airflow diffuses into brick tea 3, it leaves through the upper volatile organic compound collection sheet 4, so that as many volatile organic compounds as possible remain on the volatile organic compound collection sheet 4.

Claims

1. A device for enriching volatile organic compounds in a brick tea, characterized in that, It comprises an outer package (1), an exhaust hood (2) and an air exhaust equipment; The outer package (1) is used for tightly wrapping the Fu brick tea (3), a first through hole is formed in the upper surface of the outer package (1), a second through hole is formed in the lower surface of the outer package (1), a volatile organic compound collecting sheet (4) is filled in the first through hole and adheres to the inner wall of the first through hole, and a non-woven fabric (5) is filled in the second through hole and adheres to the inner wall of the second through hole. The lower end of the exhaust hood (2) is sealingly connected to the upper surface of the outer package (1), the air inlet end of the air exhaust equipment is sealingly connected to the air outlet end of the exhaust hood (2), and the air inlet end of the exhaust hood (2) is in communication with the volatile organic compound collecting sheet (4).

2. The device for enriching volatile organic compounds in a Guizhou brick tea according to claim 1, characterized in that, The outer package (1) is in the shape of a cuboid, the volatile organic compound collecting sheet (4) is in the shape of a circle, and the center of the volatile organic compound collecting sheet (4) coincides with the center of the upper surface of the outer package (1).

3. The device for enriching volatile organic compounds in a Guizhou brick tea according to claim 2, characterized in that, Uniformly distributed air holes (6) are formed in the volatile organic compound collecting sheet (4), and the air holes (6) are symmetrically distributed on the volatile organic compound collecting sheet (4) along the radial direction.

4. The device for enriching volatile organic compounds in a Guizhou brick tea according to claim 2, characterized in that, The second through hole is in the shape of a rectangle, the center of the second through hole coincides with the center of the lower surface of the outer package (1), and the inner wall of the second through hole is arranged close to the outer edge of the lower surface of the outer package (1).

5. The device for enriching volatile organic compounds in a Guizhou brick tea according to claim 4, characterized in that, The width of the second through hole is 0.8-0.9 times the width of the outer package (1).

6. The device for enriching volatile organic compounds in a Guizhou tree fungus brick tea according to claim 3, characterized in that, The exhaust hood (2) comprises a first support plate (7) and a first cover body (8) in an integrated structure, the lower surface of the first support plate (7) is provided with a first clamping groove (9) for sealingly and pluggingly fitting the upper surface of the outer package (1), the first clamping groove (9) is sealingly and pluggingly fitted in the upper surface of the outer package (1), the upper end of the first cover body (8) is the air outlet end of the exhaust hood (2), a third through hole is formed in the first support plate (7), the lower end of the first cover body (8) is smoothly connected to the upper end of the inner wall of the third through hole, and the third through hole is in communication with the air holes (6).

7. The device for enriching volatile organic compounds in a Guizhou brick tea according to claim 6, characterized in that, The first cover body (8) is in the shape of a circular truncated cone, and the caliber gradually decreases from bottom to top.

8. The device for enriching volatile organic compounds in a Guizhou brick tea according to claim 6, characterized in that, The inner wall of the third through hole is located directly above the outer edge of the volatile organic compound collecting sheet (4).

9. The device for enriching volatile organic compounds in a Guizhou tree fungus brick tea according to claim 7, characterized in that, It also comprises a gas conveying hood which is identical in shape to the exhaust hood (2), the second support plate (10) corresponds to the first support plate (7), the second cover body (11) corresponds to the first cover body (8), the second support plate (10) and the second cover body (11) are arranged in an up-down relationship, the upper surface of the second support plate (10) is provided with a second clamping groove (12) for sealingly and pluggingly fitting the lower surface of the outer package (1), the second clamping groove (12) is sealingly and pluggingly fitted in the lower surface of the outer package (1), a fourth through hole is formed in the second support plate (10), the upper end of the second cover body (11) is smoothly connected to the lower end of the inner wall of the fourth through hole, and the lower end of the second cover body (11) is sealingly connected to the air outlet end of the air blower.

10. The device for enriching volatile organic compounds in a Guizhou brick tea according to claim 9, characterized in that, The inner diameters of the fourth through hole and the third through hole are the same, and the center of the fourth through hole and the center of the third through hole are symmetrically distributed along the central axis in the height direction of the outer package (1).

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