Sample pretreatment device for tea heavy metal detection

Abstract

The utility model discloses a sample pretreatment device for tea heavy metal detection, which comprises a block body, a grinding assembly and a box body, one side of the block body is provided with a placing groove, one side of the placing groove is provided with a cavity in the block body, the cavity is internally provided with a heating pipe, and the placing groove is internally provided with a stirring assembly; the grinding assembly is mounted in the middle of the block body and is used for crushing tea leaves; the box body is internally provided with a filter plate, a material guide plate is arranged below the filter plate, and the filter plate and the material guide plate are obliquely arranged. By additionally arranging the placing groove, the heating pipe, the grinding assembly and the stirring assembly, the sampled tea leaves can be dried, ground, crushed and screened on the same equipment; a worker is prevented from switching the sample to a plurality of devices for operation, so that the labor intensity of the worker is effectively reduced, and the working efficiency of sample pretreatment for tea heavy metal detection can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea pre-treatment, in particular to a sample pre-treatment device for tea heavy metal detection. Background Art

[0002] Pesticide residue analysis is an important indicator of tea quality and safety. Strengthening the detection of pesticide residues is of great significance to protecting human health and reducing agricultural losses. In the process of heavy metal element detection in tea, the pretreatment step is very important. It is often necessary to dry the tea leaves, then crush and sieve them to obtain tea powder, and then soak the tea powder and filter it to obtain tea soaking liquid, and then the staff will conduct the next step of testing.

[0003] However, the existing pre-treatment of tea leaves for heavy metal detection often requires drying, crushing and sieving step by step. Workers are required to transfer the processed tea leaves to different equipment for processing operations, and each step must be performed separately, which is relatively cumbersome, increases the labor intensity of workers, and reduces the work efficiency of tea pre-treatment. Utility Model Content

[0004] The purpose of the utility model is to provide a sample pre-processing device for heavy metal detection of tea, which can reduce the labor intensity of workers and improve processing efficiency, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sample pretreatment device for heavy metal detection of tea leaves, comprising a block, a grinding assembly and a box body, a placement groove is opened on one side of the block, a cavity is provided on one side of the placement groove and located inside the block, a heating tube is provided inside the cavity, and a stirring assembly is provided inside the placement groove; the grinding assembly is installed in the middle of the block to crush the tea leaves; a filter plate is provided inside the box body, a material guide plate is provided below the filter plate, and the filter plate and the material guide plate are both inclined; by adding a placement groove, a heating tube, a grinding assembly and a stirring assembly, the sampled tea leaves can be dried, ground, crushed and screened on the same device, avoiding the staff from switching to multiple devices for operation, effectively reducing the labor intensity of the staff, and improving the work efficiency of sample pretreatment for heavy metal detection of tea leaves.

[0006] Preferably, the grinding assembly includes a grinding chamber opened in the middle of the block, and one end of the grinding chamber is communicated with the box body, a grinding block is provided inside the grinding chamber, and grinding protrusions are fixedly provided on the grinding block and the inner wall of the grinding chamber, a rotating shaft is fixedly provided at one end of the grinding block, and one end of the rotating shaft is connected to the output end of the motor. By adding a grinding assembly, the dried tea sample can be ground and crushed.

[0007] Preferably, the stirring assembly includes a horizontal plate fixed on the rotating shaft, and stirring rods are rotatably provided at both ends of the horizontal plate, one end of the stirring rod extends into the interior of the placement groove and is fixedly connected to the stirring blade, and the other end of the stirring rod is fixedly provided with a gear, and the gear is meshingly connected to the gear ring; the stirring assembly can stir the dried tea leaves in the placement groove so that the tea leaves are heated evenly.

[0008] Preferably, a support frame is fixedly provided on one side of the box body, the motor is installed on the support frame, and the outer wall of the gear ring is fixedly connected to the support frame through a fixing rod, which can support the motor and the gear ring and increase the safety of placement and use of the motor and the gear ring.

[0009] Preferably, one end of the filter plate and the guide plate is provided with a discharge port on the box body, both sides of the discharge port are provided with slots on the box body, and baffles are slidably provided inside the slots; the discharge port is added to facilitate the removal of the screened tea powder.

[0010] Preferably, a soaking tank is fixedly provided on one side below the discharge port and on the box body; the soaking tank is convenient for soaking the tea powder discharged after grinding and crushing, thereby achieving convenience of soaking.

[0011] Preferably, an observation window is provided on one side of the box body, and a transparent glass is fixed on the observation window. The addition of the observation window facilitates the observation of the screening status of the tea powder inside the box body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model optimizes the existing sample pretreatment device for heavy metal detection of tea leaves, and can dry, grind, crush and screen the sampled tea leaves on the same device by adding a placement tank, a heating tube grinding assembly and a stirring assembly, thereby avoiding the need for staff to switch the operation to multiple devices, effectively reducing the labor intensity of the staff, and improving the work efficiency of sample pretreatment for heavy metal detection of tea leaves. The device has a simple structure and is easy to operate and use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the stirring component in the utility model.

[0017] In the figure: 1. block; 2. placement groove; 3. cavity; 4. heating tube; 5. box; 6. filter plate; 7. guide plate; 8. grinding chamber; 9. grinding block; 10. grinding protrusion; 11. rotating shaft; 12. motor; 13. horizontal plate; 14. stirring rod; 15. stirring blade; 16. gear; 17. gear ring; 18. support frame; 19. fixing rod; 20. discharge port; 21. baffle; 22. soaking tank; 23. transparent glass. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] See also Figure 1-Figure 3 A sample pretreatment device for heavy metal detection of tea leaves shown in the figure comprises a block 1, a grinding assembly and a box 5. A placement groove 2 is provided on one side of the block 1, a cavity 3 is provided on one side of the placement groove 2 and located inside the block 1, a heating tube 4 is provided inside the cavity 3, and a stirring assembly is provided inside the placement groove 2; the grinding assembly is installed in the middle of the block 1 to crush the tea leaves; a filter plate 6 is provided inside the box 5, and a material guide plate 7 is provided below the filter plate 6, and the filter plate 6 and the material guide plate 7 are both inclined.

[0021] See also Figure 1-Figure 3 The grinding assembly shown in the figure includes a grinding chamber 8 opened in the middle of the block 1, and one end of the grinding chamber 8 is connected to the box body 5. A grinding block 9 is arranged inside the grinding chamber 8. Grinding protrusions 10 are fixedly arranged on the inner wall of the grinding block 9 and the grinding chamber 8. A rotating shaft 11 is fixedly arranged at one end of the grinding block 9, and one end of the rotating shaft 11 is connected to the output end of the motor 12.

[0022] See also Figure 1-Figure 3 The stirring assembly shown in the figure includes a horizontal plate 13 fixed on the rotating shaft 11, and stirring rods 14 are rotatably provided at both ends of the horizontal plate 13. One end of the stirring rod 14 extends into the interior of the placement groove 2 and is fixedly connected to the stirring blade 15, and the other end of the stirring rod 14 is fixedly provided with a gear 16, which is meshed with a gear ring 17.

[0023] When using the pretreatment device for heavy metal detection of tea: first, the sampled tea leaves are placed in the placement slot 2 on one side of the block, and then the heating tube 4 inside the cavity 3 is energized, and the heating tube 4 can transfer heat to the inner wall of the placement slot 2, so as to achieve the effect of heating and drying the tea leaves in the placement slot 2, and at the same time, the motor 12 is started, and the motor 12 can drive the shaft 11 to rotate when it is started, and the rotation of the shaft 11 can drive the horizontal plate 13 to rotate, and the rotation of the horizontal plate 13 can drive the stirring rods 14 connected at both ends to rotate synchronously with the shaft 11 as the center of the circle. When the stirring rod 14 rotates with the rotating shaft 11 as the center, the gear 16 fixed at one end of the stirring rod 14 is meshed with the gear ring 17, so that the stirring rod 14 can rotate with the rotating shaft 11 as the center and can also rotate on its own. The rotation of the stirring rod 14 can enable the stirring blades 15 on the side wall to stir the tea leaves in the placement groove 2, thereby achieving uniform heating of the tea leaves in the placement groove 2, avoiding the staff from using stirring tools to stir the tea leaves manually, effectively reducing the labor intensity of the staff, and achieving heating and drying of the tea leaves while stirring them.

[0024] The dried tea leaves are taken out from the placement groove 2 and put into the grinding chamber 8 in the middle of the block 1. The motor 12 is started to drive the rotating shaft 11 to rotate. The rotation of the rotating shaft 11 can drive the grinding block 9 in the grinding chamber 8 to rotate, so as to grind and crush the tea leaves poured into the grinding chamber 8. The ground and crushed tea leaves will fall into the box body 5 through the other end of the grinding chamber 8. The ground and crushed tea leaves will be screened by the filter plate 6 inclinedly arranged inside the box body 5. Large particles of tea powder will slide to the lower end side through the filter plate 6, while fine tea powder will fall onto the guide plate 7 through the filter plate 6 and slide to the lower end by the guide plate 7. This process can realize the screening of the tea leaves while crushing them, avoiding the staff from sending the crushed tea powder into the screening equipment for screening, effectively reducing the labor intensity of the staff and effectively improving the efficiency of tea pre-treatment.

[0025] The device has a simple structure and is convenient for staff to operate and use. At the same time, by adding a placement trough, a heating tube grinding assembly and a stirring assembly, the sampled tea can be dried, ground, and screened on the same device, avoiding the need for staff to switch to multiple devices for operation, effectively reducing the labor intensity of staff and improving the work efficiency of sample pretreatment for heavy metal detection of tea.

[0026] Example 2

[0027] See also Figure 1-Figure 3, this embodiment further explains Example 1, the block 1, the grinding assembly and the box 5 shown in the figure, a placement groove 2 is opened on one side of the block 1, a cavity 3 is provided on one side of the placement groove 2 and located inside the block 1, a heating tube 4 is provided inside the cavity 3, and a stirring assembly is provided inside the placement groove 2; the grinding assembly is installed in the middle of the block 1 to crush the tea leaves; a filter plate 6 is provided inside the box 5, and a material guide plate 7 is provided below the filter plate 6, and the filter plate 6 and the material guide plate 7 are both inclined;

[0028] See also Figure 1-Figure 3 , a support frame 18 is fixedly provided on one side of the box body 5 shown in the figure, the motor 12 is mounted on the support frame 18, and the outer wall of the gear ring 17 is fixedly connected to the support frame 18 through a fixing rod 19;

[0029] See also Figure 1 and Figure 2 In the figure, one end of the filter plate 6 and the guide plate 7 are both provided with a discharge port 20 located on the box body 5, and both sides of the discharge port 20 are provided with slots located on the box body 5, and baffles 21 are slidably provided inside the slots.

[0030] In this embodiment, a support frame 18 is fixedly provided on one side of the box body 5, which can support the motor 12. At the same time, the gear ring 17 is connected to the support frame 18 through a fixing rod 19, which can support the gear ring 17 and avoid the gear ring 17 and the motor 12 being placed in the air, thereby effectively improving the safety of the placement and use of the motor 12 and the gear ring 17; discharge ports 20 are provided on both sides of the box body 5 and at the lower ends of the filter plate 6 and the guide plate 7 to facilitate the discharge of the screened tea powder. At the same time, a baffle 21 is provided at the discharge port 20 to shield the tea powder on the filter plate 6 and the guide plate 7 inside the box body 5.

[0031] Example 3

[0032] See also Figure 1-Figure 3 This embodiment further explains other embodiments. In the figure, a block 1, a grinding assembly and a box 5 are provided. A placement groove 2 is provided on one side of the block 1. A cavity 3 is provided on one side of the placement groove 2 and located inside the block 1. A heating tube 4 is provided inside the cavity 3. A stirring assembly is provided inside the placement groove 2. The grinding assembly is installed in the middle of the block 1 to crush the tea leaves. A filter plate 6 is provided inside the box 5. A material guide plate 7 is provided below the filter plate 6. The filter plate 6 and the material guide plate 7 are both inclined.

[0033] See also Figure 1 and Figure 2 , a soaking tank 22 is fixedly provided on the lower side of the discharge port 20 and located on the box body 5;

[0034] See also Figure 1, an observation port is provided on one side of the box body 5 shown in the figure, and a transparent glass 23 is fixed on the observation port.

[0035] In the present embodiment, a soaking tank 22 is provided on one side of the discharge port 20, which can soak the tea powder particles of different sizes discharged from the discharge port 20, avoiding the staff to soak them in the soaking equipment and avoiding the staff to repeatedly use the equipment, which effectively reduces the labor intensity of the staff; an observation port is provided on one side of the box 5, and a transparent glass 23 is provided on the observation port, which is convenient for the staff to observe the tea powder dropped from the inside of the box 5.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sample pretreatment device for heavy metal detection in tea, characterized in that: include: A block (1), wherein a placement groove (2) is provided on one side of the block (1), a cavity (3) is provided on one side of the placement groove (2) and located inside the block (1), a heating tube (4) is provided inside the cavity (3), and a stirring component is provided inside the placement groove (2); A grinding assembly is installed in the middle of the block (1) to grind the tea leaves; A box body (5) is provided with a filter plate (6) inside the box body (5), a material guide plate (7) is provided below the filter plate (6), and both the filter plate (6) and the material guide plate (7) are arranged at an angle.

2. A sample pretreatment device for heavy metal detection in tea according to claim 1, characterized in that: The grinding assembly comprises a grinding chamber (8) opened in the middle of the block (1), and one end of the grinding chamber (8) is connected to the box (5), a grinding block (9) is arranged inside the grinding chamber (8), and grinding protrusions (10) are fixedly arranged on the inner wall of the grinding block (9) and the grinding chamber (8), a rotating shaft (11) is fixedly arranged at one end of the grinding block (9), and one end of the rotating shaft (11) is connected to the output end of the motor (12).

3. A sample pretreatment device for heavy metal detection of tea leaves according to claim 2, characterized in that: The stirring assembly comprises a horizontal plate (13) fixedly arranged on the rotating shaft (11), and stirring rods (14) are rotatably arranged at both ends of the horizontal plate (13), one end of the stirring rod (14) extends into the interior of the placement groove (2) and is fixedly connected to a stirring blade (15), and a gear (16) is fixedly arranged at the other end of the stirring rod (14), and the gear (16) is meshingly connected to a gear ring (17).

4. A sample pretreatment device for heavy metal detection in tea according to claim 3, characterized in that: A support frame (18) is fixedly provided on one side of the box body (5), the motor (12) is mounted on the support frame (18), and the outer side wall of the gear ring (17) is fixedly connected to the support frame (18) via a fixing rod (19).

5. A sample pretreatment device for heavy metal detection in tea according to claim 1, characterized in that: A discharge port (20) is provided at one end of the filter plate (6) and the guide plate (7) and is located on the box body (5), and slots are provided on both sides of the discharge port (20) and are rolled up on the box body (5), and baffles (21) are slidably provided inside the slots.

6. A sample pretreatment device for heavy metal detection in tea according to claim 5, characterized in that: A soaking tank (22) is fixedly provided on one side below the discharge port (20) and located on the box body (5).

7. A sample pretreatment device for heavy metal detection in tea according to claim 1, characterized in that: An observation port is provided on one side of the box body (5), and a transparent glass (23) is fixed on the observation port.

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