A device for detecting coarse fibers in tea leaves

Abstract

The utility model discloses a kind of tea coarse fiber detection devices, it is related to tea coarse fiber detection technical field, including digestion container, funnel one and condenser tube are equipped on digestion container top, water inlet pipe, pipeline and liquid outlet pipe are equipped on the sidewall of digestion container, waste liquid port for discharging digestion container waste liquid is equipped on the pipeline, filter for filtering pipeline discharge waste liquid is equipped on the pipeline between waste liquid port and digestion container, the liquid outlet pipe is connected filtering mechanism. Without disassembling reaction device, waste liquid can be discharged from bottom, replace new digestion solution into reaction device, without transferring digestion residue to other container to clean, convenient operation, reduce fiber residue loss, without back and forth transfer fiber residue, reduce the operation difficulty when tea coarse fiber detection, avoid the loss of digestion fiber residue in repeated transfer process, reduce detection error, so that it is convenient to disassemble cylinder cover and filter cartridge, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tea crude fiber detection technology, specifically a device for detecting tea crude fiber. Background Technology

[0002] Tea fiber is the main component of tea cell walls and belongs to insoluble dietary fiber. It is a complex organic compound polymer, mainly composed of cellulose, hemicellulose, and lignin. Cellulose is a linear polymer composed of glucose units linked by β-1,4 glycosidic bonds; hemicellulose is a heteropolysaccharide composed of various monosaccharides (such as xylose and arabinose); and lignin is a polymer with a three-dimensional network structure composed of phenylpropane units linked by ether bonds and carbon-carbon bonds.

[0003] In existing technologies, the standard GB / T8310-2013 for determining crude fiber in tea uses a common beaker for heating. The large opening of the beaker allows for easy evaporation of the solution, leading to a reduction in the reaction reagents. The digestion process requires constant monitoring of the solution level, necessitating the addition of hot water multiple times, making the operation cumbersome and resource-intensive. After acid digestion, the tea fiber residue needs to be transferred to another container for cleaning, which can easily result in fiber loss and lower crude fiber test results. Changing the digestion solution requires removing the digested fiber residue and discarding the waste liquid before adding new digestion solution. This requires additional measuring containers to measure the volume of new digestion solution and organic solvent cleaning solution, further complicating the process. After digestion, the fiber residue needs to be transferred again to another container for cleaning, and then transferred again to a filtration device, repeating this process multiple times. This cumbersome operation can easily lead to inaccurate test results. Therefore, we propose a device for detecting crude fiber in tea to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting crude fiber in tea leaves, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for detecting crude fiber in tea leaves includes a digestion container. The top of the digestion container has a funnel and a condenser. The side wall of the digestion container has an inlet pipe, a pipe, and an outlet pipe. The pipe has a waste outlet for discharging waste liquid from the digestion container. A filter is installed on the pipe between the waste outlet and the digestion container to filter the waste liquid discharged from the pipe. The outlet pipe is connected to a filtration mechanism for filtering the solid-liquid mixture discharged from the outlet pipe. The filtration mechanism includes a cap connected to the outlet pipe, a filter cylinder at the bottom of the cap, a support leg that moves to contact the bottom of the filter cylinder, a filter screen connected to the top of the support leg, a connecting rod at the center of the top of the filter screen, a second filter screen connected to the top of the connecting rod, a second funnel on the cap, a drain pipe connected to the bottom of the filter cylinder, an air extraction port for filtration on the drain pipe, and a connecting mechanism on the filter cylinder.

[0007] Preferably, the connecting mechanism is used to connect the filter cartridge and the cartridge cover.

[0008] Preferably, the connecting mechanism includes a connecting seat that is threaded to the outer wall of the filter cartridge, and a protective sleeve is provided on the inner wall of the cover on one side of the connecting seat, which can be moved to insert into the filter cartridge and move to contact the top of the filter screen.

[0009] Preferably, the filter is divided into three parts: left, middle, and right. The left half is threaded to one end of the middle part, and the right half is threaded to the free end of the middle part.

[0010] Preferably, the middle portion is provided with a filter membrane.

[0011] Preferably, funnel one and funnel two have the same structure, both having graduations and valves.

[0012] Preferably, both the cylinder cover and the outer wall of the filter cylinder are provided with threads for matching the connecting seat, the filter hole size of the first filter screen is smaller than that of the second filter screen, and the support legs are provided in at least three sets.

[0013] Preferably, the inner wall of the connecting seat is provided with threads for matching the threads of the cylinder cover and the outer wall of the filter cylinder.

[0014] Preferably, both the connecting seat and the protective sleeve are annular structures.

[0015] Preferably, the protective sleeve is made of rubber.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This device has a small opening and is equipped with a condenser, which can greatly reduce the evaporation of the reaction solution.

[0018] 2. Equipped with a graduated measuring funnel for adding liquid, eliminating the need for a separate graduated cylinder to measure the solution and other organic reagents; simply add the solution directly for measurement.

[0019] 3. The digestion container is equipped with graduations, which can monitor the volume of the reaction liquid in real time to determine whether additional reagents need to be added.

[0020] 4. The waste liquid can be discharged from the bottom and replaced with a new digestion solution without disassembling the reaction device.

[0021] 5. Hot water can be added through the water inlet pipe on the side wall of the digestion container to clean the residue. Wastewater can be discharged through the liquid outlet pipe. It can be washed repeatedly until the residue is neutral. There is no need to transfer the digestion residue to another container for cleaning. The operation is convenient and reduces the loss of fiber residue.

[0022] 6. After the experiment is completed, the digested fiber residue can be directly transferred from the bottom into the filter without having to transfer the fiber residue back and forth. This reduces the difficulty of operation when detecting coarse fiber in tea, avoids the loss of digested fiber residue during repeated transfer, and reduces detection errors.

[0023] 7. Manually restrict the filter cartridge and cover, then rotate the connecting seat. The connecting seat is threaded to the filter cartridge and cover, and the connecting seat is threaded to the cover, making it easy to disassemble the cover and filter cartridge, thus improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the filter mechanism in this utility model;

[0026] Figure 3 This is a schematic diagram of the connecting mechanism in this utility model.

[0027] In the diagram: 1. Digestion container; 2. Funnel 1; 3. Condenser; 4. Water inlet pipe; 5. Pipe; 6. Filter; 7. Waste liquid outlet; 8. Liquid outlet pipe; 9. Funnel 2; 10. Filtration mechanism; 11. Drain pipe; 12. Air extraction port; 13. Connecting mechanism;

[0028] 1001. Cylinder cover; 1002. Filter cartridge; 1003. Support leg; 1004. Filter screen one; 1005. Connecting rod; 1006. Filter screen two;

[0029] 1301, Connector; 1302, Protective Cover. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-3 A device for detecting crude fiber in tea leaves includes a digestion container 1 with graduations, a funnel 2 and a condenser 3 on the top of the digestion container 1, an inlet pipe 4, a pipe 5 and an outlet pipe 8 on the side wall of the digestion container 1, and valves on the inlet pipe 4, pipe 5 and outlet pipe 8. The pipe 5 has a waste outlet 7 for discharging waste liquid from the digestion container 1. A filter 6 for filtering the waste liquid discharged from the pipe 5 is provided between the waste outlet 7 and the digestion container 1 on the pipe 5. The filter 6 is divided into three parts: left, middle and right. The left half is threaded to one end of the middle part, and the right half is threaded to the free end of the middle part. The middle part is provided with a filter membrane, which can be a water-based nylon filter membrane with a pore size of 50 μm.

[0032] The outlet pipe 8 is connected to the filter mechanism 10, which is used to filter the solid-liquid mixture discharged from the outlet pipe 8. The filter mechanism 10 includes a cylinder cover 1001 connected to the outlet pipe 8. A filter cylinder 1002 is provided at the bottom of the cylinder cover 1001. A support leg 1003 is movable at the bottom of the filter cylinder 1002. A filter screen 1004 is connected to the top of the support leg 1003. A connecting rod 1005 is provided at the center of the top of the filter screen 1004. A filter screen 1006 is connected to the top of the connecting rod 1005. A funnel 9 is provided on the cylinder cover 1001. 2 and funnel 2 have the same structure, both with graduations and valves. The bottom of filter cylinder 1002 is connected to a drain pipe 11, and the drain pipe 11 is provided with an air extraction port 12 for filtration. Both the cylinder cover 1001 and the outer wall of filter cylinder 1002 are provided with threads for matching the connecting seat 1301. The filter pore size of filter screen 1004 is smaller than that of filter screen 2 1006. The pore diameter of filter screen 1004 is 80um-160um, and the pore diameter of filter screen 2 1006 is 250um-400um. The support legs 1003 are provided with at least three sets.

[0033] After crushing the tea leaves, weigh 2.5g of the sample and place it into a 400mL digestion container 1. Add sulfuric acid solution, cover the container 1, and heat it. Observe the volume of the digestion liquid through the scale on the container 1. Add hot water through funnel 2 to maintain the original solution volume. After digestion, remove the heat source and open the waste liquid outlet 7 to drain the waste liquid. Replace the filter membrane as needed. At the same time, a vacuum can be connected to the free end of the pipe 5 for suction filtration. After draining the waste liquid, close the pipe 5 and pass hot distilled water through the water inlet pipe 4 to wash the residue. Then drain the waste water. Repeat this process until the residue is neutral.

[0034] Add NaOH solution to funnel 2, heat digestion container 1 to continue digestion, observe the volume of the digested liquid, and add hot water from funnel 2 to maintain the original solution volume. After digestion, remove the heat source, open waste liquid outlet 7 to discharge the waste liquid. A filtration device can be connected to the free end of pipe 5 for filtration. After discharging the waste liquid, close pipe 5, and pass hot distilled water through inlet pipe 4 to wash the residue, then discharge the waste water. Add 1% hydrochloric acid from funnel 2 to wash once, discharge the waste liquid, and pass hot distilled water through inlet pipe 4 to wash the residue. Open outlet pipe 8 to discharge the residue and... Wastewater flows into filter cartridge 1002, is filtered through filter screen 1006 and filter screen 1004, and then discharged through drain pipe 11. This process is repeated until the residue becomes neutral. Ethanol is added to filter cartridge 1002 through funnel 9, and the filter is washed twice. Acetone is added through funnel 9, and the filter is washed three times. The filter is then connected to a vacuum filtration device through exhaust port 12 to remove the solvent from filter cartridge 1002. Filter cartridge 1002 and tea residue are placed in an oven, dried, and weighed. The crude fiber content of the tea is calculated according to the standard GB / T8310-2013 method.

[0035] The filter cartridge 1002 is provided with a connecting mechanism 13, which is used to connect the filter cartridge 1002 and the cover 1001. The connecting mechanism 13 includes a connecting seat 1301 that is threaded to the outer wall of the filter cartridge 1002. The inner wall of the cover 1001 on one side of the connecting seat 1301 is provided with a protective sleeve 1302 that can be moved to insert into the filter cartridge 1002 and move to contact the top of the filter screen 1006. Both the connecting seat 1301 and the protective sleeve 1302 are annular structures. The inner wall of the connecting seat 1301 is provided with threads for matching the threads of the outer wall of the cover 1001 and the filter cartridge 1002. The protective sleeve 1302 is made of rubber and is used to cover the gap at the connection between the cover 1001 and the filter cartridge 1002.

[0036] Manually restrict the filter cartridge 1002 and the cover 1001, then rotate the connecting seat 1301. The connecting seat 1301 is threadedly connected to the filter cartridge 1002 and the cover 1001. The thread of the connecting seat 1301 is separated from the cover 1001, and the filter cartridge 1002 is removed. This makes it easier to disassemble the cover 1001 and the filter cartridge 1002, thus improving work efficiency.

[0037] Working principle: After crushing the tea leaves, weigh 2.5g of the sample and place it into a 400mL digestion container 1. Add sulfuric acid solution, cover the container 1, and heat it. Observe the volume of the digestion liquid through the scale on the container 1. Hot water can be added through funnel 2 to maintain the original solution volume. After digestion, remove the heat source, open the waste liquid outlet 7 to discharge the waste liquid, replace the filter membrane as needed, and simultaneously connect a vacuum to the free end of pipe 5 for suction filtration. After discharging the waste liquid, close the valve. Close pipe 5, and introduce hot distilled water through inlet pipe 4 to wash the residue, then discharge the wastewater. Repeat this process until the residue becomes neutral. Add NaOH solution to funnel 2, and continue digestion in digestion container 1. Observe the volume of the digested liquid, and add hot water through funnel 2 to maintain the original solution volume. After digestion, remove the heat source, open waste liquid outlet 7 to discharge the waste liquid. Alternatively, a suction filter can be connected to the free end of pipe 5 for filtration. After discharging the waste liquid, close pipe 5, and introduce hot distilled water through inlet pipe 4 to wash the residue, then discharge the wastewater. Add 1% hydrochloric acid to funnel 2 for washing once, drain the waste liquid, and then pass hot distilled water through inlet pipe 4 to wash the residue. Open outlet pipe 8, and the residue and waste water flow together into filter cartridge 1002. After filtration through filter screen 1006 and filter screen 1004, the waste water is discharged through drain pipe 11. Repeat this process until the residue is neutral. Add ethanol to filter cartridge 1002 through funnel 9 for washing twice, and then add acetone through funnel 9 for washing three times. Connect the filter cartridge 1002 to the suction filtration device through exhaust port 12 for filtration, and remove the filter cartridge 1002. The solvent in 02 is used to place the filter cartridge 1002 and tea residue into an oven. After drying, the residue is weighed and the crude fiber content of the tea is calculated according to the standard GB / T8310-2013 method. The filter cartridge 1002 and the cover 1001 are manually restricted, and then the connecting seat 1301 is rotated. The connecting seat 1301 is threaded to connect the filter cartridge 1002 and the cover 1001. The thread of the connecting seat 1301 is separated from the cover 1001, and the filter cartridge 1002 is removed. This makes it easy to disassemble the cover 1001 and the filter cartridge 1002, improving work efficiency.

[0038] The filters, vacuum filters, funnels, heat sources, and filters are all existing technologies and will not be described in detail here.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting crude fiber in tea leaves, comprising a digestion container (1), a funnel (2) and a condenser (3) at the top of the digestion container (1), and an inlet pipe (4), a pipe (5) and an outlet pipe (8) on the side wall of the digestion container (1), characterized in that: The pipe (5) is provided with a waste liquid outlet (7) for discharging waste liquid from the digestion container (1). A filter (6) is provided on the pipe (5) between the waste liquid outlet (7) and the digestion container (1) for filtering the waste liquid discharged from the pipe (5). The outlet pipe (8) is connected to a filter mechanism (10). The filter mechanism (10) is used to filter the solid-liquid mixture discharged from the outlet pipe (8). The filter mechanism (10) includes a cylinder cover (1001) connected to the outlet pipe (8). A filter cylinder (1002) is provided at the bottom of the cylinder cover (1001). The inner bottom is in contact with a support leg (1003), the top of the support leg (1003) is connected to a filter screen (1004), the top center of the filter screen (1004) is provided with a connecting rod (1005), the top of the connecting rod (1005) is connected to a filter screen (1006), the cover (1001) is provided with a funnel (9), the bottom of the filter cylinder (1002) is connected to a drain pipe (11), the drain pipe (11) is provided with an air extraction port (12) for filtration, and the filter cylinder (1002) is provided with a connecting mechanism (13).

2. The device for detecting crude fiber in tea leaves according to claim 1, characterized in that: The connecting mechanism (13) is used to connect the filter cartridge (1002) and the cartridge cover (1001).

3. The device for detecting crude fiber in tea leaves according to claim 2, characterized in that: The connecting mechanism (13) includes a connecting seat (1301) that is threaded to the outer wall of the filter cylinder (1002). The inner wall of the cylinder cover (1001) on one side of the connecting seat (1301) is provided with a protective sleeve (1302) that can be moved to insert into the filter cylinder (1002) and move to contact the top of the filter screen (1006).

4. The device for detecting crude fiber in tea leaves according to claim 1, characterized in that: The filter (6) is divided into three parts: left, middle and right. The left half is threaded to one end of the middle part, and the right half is threaded to the free end of the middle part.

5. The apparatus for detecting crude fiber in tea leaves according to claim 4, characterized in that: The middle section is equipped with a filter membrane.

6. The device for detecting crude fiber in tea leaves according to claim 1, characterized in that: The funnel one (2) and funnel two (9) have the same structure, both having scales and valves.

7. The device for detecting crude fiber in tea leaves according to claim 1, characterized in that: Both the outer walls of the cylinder cover (1001) and the filter cylinder (1002) are provided with threads for use with the matching connecting seat (1301). The filter hole size of the first filter screen (1004) is smaller than that of the second filter screen (1006). The support leg (1003) is provided with at least three sets.

8. The apparatus for detecting crude fiber in tea leaves according to claim 3, characterized in that: The inner wall of the connecting seat (1301) is provided with threads for matching the outer wall threads of the cylinder cover (1001) and the filter cylinder (1002).

9. The apparatus for detecting crude fiber in tea leaves according to claim 3, characterized in that: Both the connecting seat (1301) and the protective sleeve (1302) are annular structures.

10. The apparatus for detecting crude fiber in tea leaves according to claim 9, characterized in that: The protective sleeve (1302) is made of rubber.

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