Citrus pesticide residue sample preparation device

Abstract

The utility model discloses a citrus pesticide residue sample preparation device which comprises a crushing shell and a machine frame, the crushing shell is fixed on the machine frame in a suspended mode, the crushing shell is of a big-end-up trumpet-shaped structure, the top of the crushing shell is open, the bottom of the crushing shell is sealed, a discharge pipe is arranged at the bottom of the crushing shell, a discharge valve is installed on the discharge pipe, and the discharge valve is connected with the crushing shell. The top of the crushing shell is covered with a shell cover, a feeding opening is formed in the shell cover, a feeding opening turning cover is installed on the feeding opening, a crushing cutter driven by a driving motor is vertically installed in the crushing shell, the driving motor is installed at the top of the shell cover, a spraying head is installed on the bottom face of the shell cover, and the spraying head is connected with a flushing pipe. And a water inlet valve is mounted on the flushing pipe. The citrus pesticide residue sample preparation device is ingenious in structural arrangement, citrus can be directly crushed for sample preparation without being cut into small blocks, and sampling and cleaning are convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of fruit testing and sample preparation, specifically to a citrus pesticide residue sample preparation device. Background Technology

[0002] The quality and safety of fresh fruits and vegetables is a hot issue of common concern to government regulatory departments, planting and production enterprises, and consumers.

[0003] Citrus fruits are susceptible to pests and diseases, and pesticides are used extensively in their production, thus requiring high standards for pesticide residue detection. Currently, most citrus testing methods employ laboratory analysis, which involves bringing samples into a laboratory, separating the parts to be tested, and then performing qualitative or quantitative analysis using chemical methods or instruments. Before testing, the citrus fruits need to be pulverized for sample preparation; traditionally, this is done using a small household juicer.

[0004] Application investigations revealed that using small household juicers to grind citrus samples for testing has limited grinding capacity, requiring the citrus to be cut into small pieces, while larger juicers require a larger sample size; both methods present inconveniences in sampling and cleaning. Therefore, a citrus pesticide residue sampling device needs to be designed. Summary of the Invention

[0005] The purpose of this utility model is to address the problems existing in the prior art by providing a citrus pesticide residue sampling device. This citrus pesticide residue sampling device has a clever structure, which eliminates the need to cut the citrus into small pieces and allows for direct input into the crushing and sampling process. It is also convenient for sampling and cleaning.

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

[0007] A citrus pesticide residue sampling device includes a crushing shell and a frame. The crushing shell is suspended and fixed on the frame. The crushing shell has a funnel-shaped structure that is wider at the top and narrower at the bottom. The top of the crushing shell is open, and the bottom is sealed. A discharge pipe with a discharge valve is installed at the bottom of the crushing shell. A shell cover is provided on the top of the crushing shell, and a feeding port with a feeding port flap is installed on the feeding port. A crushing blade driven by a drive motor is vertically installed inside the crushing shell. The drive motor is installed on the top of the shell cover. A spray head is installed on the bottom surface of the shell cover, and the spray head is connected to a flushing pipe. The flushing pipe can be a soft water pipe to facilitate the separation of the shell cover from the crushing shell. A water inlet valve is installed on the flushing pipe. By placing a sampling container at the bottom of the discharge pipe and opening the discharge valve, the slurry inside the crushing shell can be discharged into the sampling container to complete the sampling.

[0008] A further preferred embodiment is that the top of the crushing shell adopts a straight cylindrical structure, and the lower end of the straight cylindrical structure is an inverted conical barrel structure. The straight cylindrical structure facilitates the installation of a shell cover.

[0009] A further preferred embodiment: The crushing blade includes a rotating shaft, on which are mounted two short blades, two medium blades, and two long blades. These blades are arranged in a spiral sequence on the shaft, with each blade positioned on a different vertical plane. The top of the shaft is connected to a drive motor. This crushing blade structure provides strong crushing capability, and combined with the trumpet-shaped crushing shell (larger at the top and smaller at the bottom), it allows for direct crushing of citrus fruits without the need to cut them into smaller pieces.

[0010] Further preferably, the top of the rotating shaft is designed with a hexagonal or plum blossom-shaped structure for easy detachable connection with the drive motor, which is a commercially available motor from a small household electric meat grinder. Further preferably, a positioning hole is provided at the center of the bottom end of the rotating shaft, and a rotating shaft support is rotatably mounted within the positioning hole. The rotating shaft support is fixedly connected to the inner bottom of the crushing shell, and the inner bottom of the crushing shell is inclined towards the discharge pipe.

[0011] This citrus pesticide residue sampling device has the following advantages:

[0012] 1. The crushing shell adopts a trumpet-shaped structure that is larger at the top and smaller at the bottom. Combined with the crushing blade, it is not necessary to cut the citrus into small pieces before it can be directly put into the crushing sample preparation.

[0013] 2. A spray head is installed on the bottom surface of the shell cover. The spray head is connected to a flushing pipe. A water inlet valve is installed on the flushing pipe. Opening the water inlet valve allows flushing water to be introduced and sprayed into the interior of the crushing shell through the spray head to flush the interior of the crushing shell. A discharge pipe is set at the bottom of the crushing shell. A discharge valve is installed on the discharge pipe. Opening the discharge valve allows the slurry or wastewater inside the crushing shell to be discharged. This allows for cleaning without disassembly, and sampling and cleaning are relatively convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the citrus pesticide residue sample preparation device;

[0015] Figure 2 This is a schematic diagram of the broken shell structure;

[0016] Figure 3 This is a schematic diagram of the structure of the breaker blade;

[0017] The names corresponding to the serial numbers in the figure are:

[0018] 1. Frame; 2. Sampling container; 3. Discharge valve; 4. Discharge pipe; 5. Shaft support; 6. Crushing shell; 7. Crushing blade; 8. Shell cover; 9. Feed port; 10. Feed port flap; 11. Drive motor; 12. Spray head; 13. Flushing pipe; 14. Water inlet valve; 15. Short blade; 16. Medium blade; 17. Long blade; 18. Shaft. Detailed Implementation

[0019] The technical solutions of the invention will be clearly and completely described below with reference to the embodiments. The described embodiments are only a part of the present utility model, and not all of the embodiments. Example

[0020] A citrus pesticide residue sampling device includes a crushing shell 6 and a frame 1. The crushing shell 6 is suspended and fixed on the frame 1. The crushing shell 6 adopts a trumpet-shaped structure, wider at the top and narrower at the bottom. The top of the trumpet-shaped structure is a straight cylindrical body. The straight cylindrical structure facilitates the installation of a shell cover 8. The top of the crushing shell 6 is open, and the bottom of the crushing shell 6 is sealed. A discharge pipe 4 is provided at the bottom of the crushing shell 6, and a discharge valve 3 is installed on the discharge pipe 4. The top of the crushing shell 6 is covered by the shell cover 8. A feeding port 9 is provided on the cover 8. A feeding port flip cover 10 is installed on the feeding port 9. A crushing blade 7 driven by a drive motor 11 is vertically installed inside the crushing shell 6. The drive motor 11 is installed on the top of the shell cover 8. A spray head 12 is installed on the bottom surface of the shell cover 8. The spray head 12 is connected to a flushing pipe 13. A water inlet valve 14 is installed on the flushing pipe 13. The sampling container 2 is placed at the bottom of the discharge pipe 4. The discharge valve 3 is opened to discharge the slurry in the crushing shell 6 into the sampling container 2 to complete the sampling.

[0021] The crushing blade 7 includes a rotating shaft 18, on which two short blades 15, two medium blades 16, and two long blades 17 are mounted. The two short blades 15, two medium blades 16, and two long blades 17 are arranged spirally upwards on the rotating shaft 18, and the short blades 15, medium blades 16, and long blades 17 are located on different vertical planes. The top of the rotating shaft 18 is connected to the drive motor 11.

[0022] The top of the rotating shaft 18 is set in a hexagonal head shape or a plum blossom shape, which facilitates detachable connection with the drive motor 11. The drive motor 11 is a motor from a commercially available small electric meat grinder.

[0023] A positioning hole is provided at the center of the bottom end of the rotating shaft 18. A rotating shaft support 5 is rotatably installed in the positioning hole. The rotating shaft support 5 is fixedly connected to the inner bottom of the crushing shell 6, and the inner bottom of the crushing shell 6 is inclined towards the discharge pipe 4.

[0024] The working principle of this citrus pesticide residue sampling device is as follows: The bottom end of the rotating shaft 18 is inserted and connected to the rotating shaft support 5. The housing cover 8 is placed over the top of the crushing housing 6. The drive motor 11 is connected to the top of the rotating shaft 18. The feeding port flap 10 is opened to feed the citrus sample into the feeding port 9. The feeding port flap 10 is then closed, and the drive motor 11 is started. The drive motor 11 drives the rotating shaft 18 to rotate, thereby driving the short blade 15, medium blade 16, and long blade 17 to crush the citrus sample. After crushing, the sampling container 2 is placed at the bottom of the discharge pipe 4, and the discharge valve 3 is opened to discharge the slurry inside the crushing housing 6 into the sampling container 2, completing the sampling. When cleaning is required, a wastewater container is placed at the bottom of the discharge pipe 4, and the discharge valve 3 and the inlet valve 14 are opened. The rinsing water is sprayed through the rinsing pipe 13 and the spray head 12 into the interior of the crushing housing to rinse it. The rinsing wastewater is discharged from the discharge pipe 4.

[0025] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A citrus agricultural residue sampling device comprising a crushing housing (6), characterized in that: The shell cover (8) is provided with a feeding port (9), and the feeding port (9) is provided with a feeding port cover (10).

2. The citrus agricultural residue sampling device of claim 1, wherein: The top end of the crushing shell (6) is provided with a straight cylinder structure, and the lower end of the straight cylinder structure is provided with an inverted conical barrel structure.

3. The citrus agricultural residue sampling device of claim 1, wherein: The crushing knife (7) comprises a rotating shaft (18), two short blades (15), two middle blades (16) and two long blades (17) are arranged on the rotating shaft (18), the two short blades (15), the two middle blades (16) and the two long blades (17) are arranged in a spiral on the rotating shaft (18) and are arranged in different vertical planes, and the top end of the rotating shaft (18) is connected with the driving motor (11).

4. The citrus agricultural residue sampling device of claim 3, wherein: The top end of the rotating shaft (18) is provided with a hexagonal head structure or a plum blossom structure.

5. The citrus agricultural residue sampling device of claim 4, wherein: The bottom end of the rotating shaft (18) is provided with a positioning hole, and a rotating shaft support seat (5) is rotatably arranged in the positioning hole.

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