Efficient nitrogen extraction blowing concentrator for detecting pesticide residues of agricultural products
By designing cooling channels on the heated aluminum block of the nitrogen evaporator and utilizing the coolant in the water tank for rapid cooling, the problem of burns caused by the lack of cooling structure in traditional nitrogen evaporators has been solved, improving operational safety and efficiency.
Patent Information
- Application Number
- CN202520340549.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Traditional nitrogen blowing machines lack cooling structures when using aluminum block perforated heating, which can cause burns to operators.
Cooling channels are designed on the heated aluminum block of the nitrogen blowing device, and the coolant in the water tank is used to achieve rapid cooling through the heat-insulating sliding plug.
It effectively reduces the risk of burns to operators due to contact with the heated parts and improves work efficiency.
Smart Images
Figure CN223841841U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pesticide residue detection, and in particular to a high-efficiency nitrogen extraction blower for detecting pesticide residues in agricultural products. Background Technology
[0002] Nitrogen evaporators are used in pesticide residue detection to concentrate sample extracts. By blowing nitrogen gas onto the sample surface, they accelerate solvent evaporation, reduce sample volume, and improve detection sensitivity. They help remove excess solvent from the extraction process, ensuring the purity of the purified sample. This facilitates accurate determination of pesticide residues using subsequent analytical methods such as high-performance liquid chromatography (HPLC) or gas chromatography (GC), simplifies the operation process, and enhances the reliability of results. It is an indispensable pretreatment tool for pesticide residue detection.
[0003] Nitrogen blowing machines typically do not have a cooling system. When using aluminum block perforated heating, operators may suffer burns if they accidentally come into contact with these heating parts. Utility Model Content
[0004] The purpose of this invention is to provide a high-efficiency nitrogen extraction blower for detecting pesticide residues in agricultural products, so as to solve the above-mentioned technical problems.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-efficiency nitrogen blowing device for detecting pesticide residues in agricultural products, comprising a nitrogen blowing device, a control module, a nitrogen blowing trough, an aluminum block structure, a sliding groove, cooling holes, a water tank, and a coolant. The control module is installed at the front of the nitrogen blowing device, the nitrogen blowing trough is located at the middle of the top of the nitrogen blowing device, the aluminum block structure is installed in the nitrogen blowing trough, the sliding groove is located at the right end of the nitrogen blowing device, the cooling holes are located at the left end of the nitrogen blowing device, the water tank is installed at the left end of the nitrogen blowing device, and the coolant is poured into the water tank.
[0006] Based on the above technical solution, the aluminum block structure includes a heated aluminum block, heating holes, a cooling channel, a heat-insulating sliding plug, a connecting plate, a connecting column, and a handle. Heating holes are distributed at the top of the heated aluminum block, and the control module heats the heated aluminum block through heating elements. The cooling channel is opened at both ends of the heated aluminum block. The heat-insulating sliding plug is installed in the cooling channel. The connecting plate is installed at the right end of the heat-insulating sliding plug. The connecting column is installed at the right end of the connecting plate through a sliding groove. The handle is installed at the right end of the connecting column.
[0007] Based on the above technical solution, the grip draws coolant from the water tank into the cooling channel for cooling through a heat-insulating sliding plug.
[0008] Compared with the prior art, the present invention has the following advantages: The present invention has a cooling channel in the heating aluminum block of the nitrogen blowing device, and uses a heat-insulating sliding plug in conjunction with the coolant in the water tank to achieve rapid cooling, reducing the problem of burns that may be caused by operators accidentally touching these heating parts. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the appearance and structure of this utility model.
[0010] Figure 2 This is a schematic diagram of the cooling state of this utility model.
[0011] Figure 3 This is a schematic diagram of the aluminum block structure of this utility model.
[0012] In the diagram: 1. Nitrogen blower, 2. Control module, 3. Nitrogen blowing tank, 4. Aluminum block structure, 5. Slide, 6. Cooling hole, 7. Water tank, 8. Coolant, 9. Heated aluminum block, 10. Heating hole, 11. Cooling channel, 12. Heat-insulating slide plug, 13. Connecting plate, 14. Connecting column, 15. Handle. Detailed Implementation
[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0014] like Figures 1 to 3 As shown, a high-efficiency nitrogen blowing device for detecting pesticide residues in agricultural products includes a nitrogen blowing device 1, a control module 2, a nitrogen blowing trough 3, an aluminum block structure 4, a sliding groove 5, a cooling hole 6, a water tank 7, and a coolant 8. The control module 2 is installed at the front of the nitrogen blowing device 1. The nitrogen blowing trough 3 is located at the top center of the nitrogen blowing device 1. The aluminum block structure 4 is installed in the nitrogen blowing trough 3. The sliding groove 5 is located at the right end of the nitrogen blowing device 1. The cooling hole 6 is located at the left end of the nitrogen blowing device 1. The water tank 7 is installed at the left end of the nitrogen blowing device 1. The coolant 8 is poured into the water tank 7.
[0015] The aluminum block structure 4 includes a heated aluminum block 9, heating holes 10, a cooling channel 11, a heat-insulating sliding plug 12, a connecting plate 13, a connecting post 14, and a handle 15. The heating holes 10 are distributed at the top of the heated aluminum block 9, and the control module 2 heats the heated aluminum block 9 through heating elements. The cooling channel 11 is opened at both ends of the heated aluminum block 9. The heat-insulating sliding plug 12 is installed in the cooling channel 11. The connecting plate 13 is installed at the right end of the heat-insulating sliding plug 12. The connecting post 14 is installed at the right end of the connecting plate 13 through a sliding groove 5. The handle 15 is installed at the right end of the connecting post 14.
[0016] The grip 15 draws the coolant 8 from the water tank 7 into the cooling channel 11 for cooling through the heat-insulating slide plug 12.
[0017] The working principle of this invention is as follows: During use, the control module 2 heats the aluminum block structure 4 to heat the sample extraction liquid used in pesticide residue detection via nitrogen blowing. When rapid cooling is required, the operator uses the handle 15 to pull the connecting column 14 to the right, and through the connecting plate 13, pulls the heat-insulating sliding plug 12 out of the cooling channel 11, allowing the coolant 8 to enter the cooling channel 11 to achieve rapid cooling of the heated aluminum block 9, reducing the risk of burns and improving work efficiency. This design solves the problem of the lack of a cooling structure in traditional nitrogen blowing instruments when using orifice heating of aluminum blocks.
[0018] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.
Claims
1. A high-efficiency nitrogen extraction and blowing device for pesticide residue detection in agricultural products, comprising a nitrogen blowing device (1), a control module (2), a nitrogen blowing tank (3), an aluminum block structure (4), a sliding groove (5), cooling holes (6), a water tank (7), and a coolant (8), characterized in that: The control module (2) is installed at the front of the nitrogen blower (1), the nitrogen blowing groove (3) is opened at the middle of the top of the nitrogen blower (1), the aluminum block structure (4) is installed in the nitrogen blowing groove (3), the sliding groove (5) is opened at the right end of the nitrogen blower (1), the cooling hole (6) is opened at the left end of the nitrogen blower (1), the water tank (7) is installed at the left end of the nitrogen blower (1), and the coolant (8) is poured into the water tank (7).
2. The high-efficiency nitrogen extraction blower for pesticide residue detection in agricultural products according to claim 1, characterized in that: The aluminum block structure (4) includes a heating aluminum block (9), heating holes (10), a cooling channel (11), a heat-insulating sliding plug (12), a connecting plate (13), a connecting column (14), and a handle (15). The heating aluminum block (9) has heating holes (10) distributed at its top end, and the control module (2) heats the heating aluminum block (9) through a heating element. The cooling channel (11) is opened at both ends of the heating aluminum block (9). The heat-insulating sliding plug (12) is installed in the cooling channel (11). The connecting plate (13) is installed at the right end of the heat-insulating sliding plug (12). The connecting column (14) is installed at the right end of the connecting plate (13) through a sliding groove (5). The handle (15) is installed at the right end of the connecting column (14).
3. The high-efficiency nitrogen extraction blower for pesticide residue detection in agricultural products according to claim 2, characterized in that: The grip (15) draws the coolant (8) in the water tank (7) into the cooling channel (11) for cooling through the heat-insulating slide (12).