A pretreatment device suitable for pesticide detection

Abstract

This utility model discloses a pretreatment device suitable for pesticide detection, comprising a mixing tank, a crushing tank fixedly connected above the mixing tank, a water pump fixedly connected above the mixing tank, a water outlet pipe fixedly connected to the end of the water pump, a spray inlet pipe fixedly connected to the end of the water outlet pipe, multiple spray nozzles fixedly connected below the spray inlet pipe, a first motor fixedly connected above the mixing tank, a first stirring rod rotatably connected below the first motor, stirring blades fixedly connected around the first stirring rod, and a silicone scraper fixedly connected to the outside of the first stirring rod. This structure allows for immediate and efficient cleaning of the tank interior. This design significantly reduces the frequency of manual cleaning required by traditional equipment, avoiding cross-interference caused by residual contamination during multiple sample processing steps, and ensuring the stability and accuracy of the test results.

Description

Technical Field

[0001] This utility model relates to the field of pretreatment technology for pesticide detection, and in particular to a pretreatment device suitable for pesticide detection. Background Technology

[0002] A pesticide pretreatment device is a device used to process samples before pesticide residue testing. Its purpose is to extract pesticide residues from the samples and remove impurities so that the samples meet the requirements of the testing instruments, thereby improving the accuracy and efficiency of the test results.

[0003] However, traditional devices suffer from problems such as incomplete cleaning, improper methods, and low efficiency in equipment cleaning. In particular, pesticide or matrix residues from previous samples can easily remain in the corners and edges of the crushing tank, leading to false positive results. On the other hand, heat generation during the crushing process is also a significant issue; the heat generated by mechanical friction can destroy pesticide components. High-speed crushing raises the sample temperature to over 50°C, causing significant decomposition of heat-sensitive pesticides such as organophosphates and carbamates, resulting in decreased extraction rates and a higher risk of false negatives. Furthermore, hard samples require even higher crushing speeds, generating more intense heat, but most devices lack real-time temperature control, making it impossible to adjust heat dissipation for different samples. This leads to inconsistent pesticide loss levels, further affecting the reliability of the test results. Utility Model Content

[0004] The purpose of this invention is to provide a pretreatment device suitable for pesticide detection, which solves the problems of cumbersome cleaning of traditional devices causing residual pollution and the decomposition of pesticide components caused by heat generated during the crushing process.

[0005] This utility model also provides a pretreatment device for pesticide detection, comprising a base, a mixing tank fixedly connected above the base, a crushing tank fixedly connected above the mixing tank, a water pump fixedly connected above the mixing tank, a water outlet pipe fixedly connected to the end of the water pump, a spray inlet pipe fixedly connected to the end of the water outlet pipe, and multiple spray nozzles fixedly connected below the spray inlet pipe.

[0006] According to the present invention, a pretreatment device suitable for pesticide detection is provided, wherein a conveying pipe is fixedly connected to the lower left of the mixing tank, a control valve is fixedly connected to the middle of the conveying pipe, a filter is fixedly connected to the middle of the conveying pipe, a detector is fixedly connected to the left side of the conveying pipe, a discharge pipe is fixedly connected to the left side of the detector, and a waste box is fixedly connected to the left side of the discharge pipe.

[0007] According to the present invention, a pretreatment device suitable for pesticide detection is provided, wherein a first motor is fixedly connected above the stirring tank, and a solvent inlet is fixedly connected above the stirring tank.

[0008] According to the present invention, a pretreatment device suitable for pesticide detection is provided, wherein a first stirring rod is rotatably connected below the first motor, stirring blades are fixedly connected around the first stirring rod, and a silicone scraper is fixedly connected to the outside of the first stirring rod.

[0009] According to the present invention, a pretreatment device suitable for pesticide detection is provided, wherein a second motor is fixedly connected above the crushing tank, a second stirring rod is rotatably connected below the second motor, crushing blades are fixedly connected around the second stirring rod, and a rotating atomizing disc is fixedly connected to the upper part of the second stirring rod.

[0010] According to the present invention, a pretreatment device suitable for pesticide detection is provided, wherein a sieve plate is fixedly connected to the bottom of the crushing tank.

[0011] According to the present invention, a pretreatment device suitable for pesticide detection is provided, wherein a liquid storage bottle is fixedly connected above the crushing tank, an infusion pipe is fixedly connected to the left side of the liquid storage bottle, a speed control valve is fixedly connected to the middle of the infusion pipe, and an atomizing chamber cover is fixedly connected below the infusion pipe.

[0012] According to the present invention, a pretreatment device suitable for pesticide detection is provided, wherein a blower is fixedly connected above the crushing tank. Beneficial effects

[0013] 1. The pretreatment device for pesticide testing in this technical solution is equipped with a silicone scraper on the inner wall of the mixing tank. During the mixing operation, the raw material residues adhering to the surface of the tank wall can be scraped off in real time, effectively avoiding the risk of cross-contamination caused by raw material deposition. At the same time, it prevents uneven dissolution caused by local raw material accumulation, ensuring the accuracy of subsequent test results. The cleaning nozzle mounted on the top of the tank can spray cleaning water onto the tank body to achieve deep cleaning after equipment use, further reducing the risk of residual pollution.

[0014] 2. The pretreatment device for pesticide detection in this technical solution efficiently atomizes the solvent using a rotating atomizing disc and other devices. The atomized solvent droplets enter the tank and rapidly vaporize upon heating, utilizing the principle of vaporization heat absorption to cool the tank, fundamentally avoiding the problem of pesticide decomposition due to localized high temperatures. Simultaneously, a directional blower continuously pumps ambient temperature air into the tank to enhance convective heat dissipation, significantly improving cooling efficiency through this dual effect. Furthermore, the airflow generated by the blower can directionally guide the steam inside the tank into the lower stirring tank, preventing steam from stagnating and accumulating at the top of the tank, ensuring that newly generated droplets always have sufficient heat absorption space, and guaranteeing the continuous and stable operation of the cooling system. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1This is a structural diagram of the pretreatment device for pesticide detection according to this utility model; Figure 2 This is a structural diagram of the mixing tank of the pretreatment device for pesticide detection according to this utility model; Figure 3 This is a structural diagram of the spray inlet pipe of the pretreatment device for pesticide detection according to this utility model; Figure 4 This is a structural diagram of the rotating atomizing disc of the pretreatment device for pesticide detection according to this utility model.

[0016] Legend: 1. Base; 2. Mixing tank; 3. Crushing tank; 4. Solvent inlet; 5. First motor; 6. Water pump; 7. Delivery pipe; 8. Control valve; 9. Filter; 10. Detector; 11. Discharge pipe; 12. Waste box; 13. First stirring rod; 14. Silicone scraper; 15. Stirring blade; 16. Sieve plate; 17. Blower; 18. Second stirring rod; 19. Crushing blade; 20. Atomizing chamber hood; 21. Water outlet pipe; 22. Spray water inlet pipe; 23. Nozzle; 24. Second motor; 25. Rotating atomizing disc; 26. Storage bottle; 27. Delivery pipe; 28. Speed ​​control valve. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] Reference Figure 1-4 This utility model provides a pretreatment device for pesticide detection, which includes a base 1, a mixing tank 2 fixedly connected above the base 1, a crushing tank 3 fixedly connected above the mixing tank 2, a water pump 6 fixedly connected above the mixing tank 2, a water outlet pipe 21 fixedly connected to the end of the water pump 6, a spray inlet pipe 22 fixedly connected to the end of the water outlet pipe 21, and a plurality of spray nozzles 23 fixedly connected below the spray inlet pipe 22.

[0019] Specifically, the water pump 6 pumps the cleaning water through the outlet pipe 21 into the spray inlet pipe 22, and the spray inlet pipe 22 sprays the cleaning water through the nozzle 23 into the mixing tank 2 for rinsing.

[0020] A conveying pipe 7 is fixedly connected to the lower left of the mixing tank 2. A control valve 8 is fixedly connected to the middle of the conveying pipe 7. A filter 9 is fixedly connected to the middle of the conveying pipe 7. A detector 10 is fixedly connected to the left side of the conveying pipe 7. A discharge pipe 11 is fixedly connected to the left side of the detector 10. A waste box 12 is fixedly connected to the left side of the discharge pipe 11.

[0021] Specifically, the well-stirred test material is filtered through filter 9 and then enters detector 10 for testing. After the test is completed, it is discharged into waste box 12.

[0022] A first motor 5 is fixedly connected to the top of the mixing tank 2, and a solvent inlet 4 is fixedly connected to the top of the mixing tank 2.

[0023] Specifically, the solvent enters the stirring tank 2 from the solvent inlet 4.

[0024] A first stirring rod 13 is rotatably connected below the first motor 5, and stirring blades 15 are fixedly connected around the first stirring rod 13. A silicone scraper 14 is fixedly connected to the outside of the first stirring rod 13.

[0025] Specifically, the silicone scraper 14 rotates with the first stirring rod 13 to scrape off the raw materials remaining on the inner wall of the mixing tank 2.

[0026] A second motor 24 is fixedly connected above the crushing tank 3. A second stirring rod 18 is rotatably connected below the second motor 24. Crushing blades 19 are fixedly connected around the second stirring rod 18. A rotating atomizing disc 25 is fixedly connected to the upper part of the second stirring rod 18.

[0027] Specifically, the outer side of the rotating atomizing disk 25 is serrated, and it shears and atomizes the liquid dripping onto the surface when rotating at high speed.

[0028] A screen plate 16 is fixedly connected to the bottom of the crushing tank 3.

[0029] Specifically, the crushed raw materials in the crushing tank 3 pass through the screen plate 16 and enter the mixing tank 2 below.

[0030] A liquid storage bottle 26 is fixedly connected above the crushing tank 3. An infusion tube 27 is fixedly connected to the left side of the liquid storage bottle 26. A speed control valve 28 is fixedly connected to the middle of the infusion tube 27. An atomizing chamber cover 20 is fixedly connected below the infusion tube 27.

[0031] Specifically, the room-temperature solvent in the storage bottle 26 flows to the surface of the rotating atomizing disc 25 via the infusion tube 27, and the flow rate can be controlled by the speed control valve 28.

[0032] A blower 17 is fixedly connected to the top of the crushing tank 3.

[0033] Specifically, the blower 17 pumps ambient temperature air into the crushing tank 3, accelerates the evaporation of the atomized solvent through forced convection, and blows the steam towards the stirring tank 2 below to prevent the steam from accumulating at the top of the tank and affecting the heat absorption space of the new droplets.

[0034] Working principle: The raw material for testing enters the crushing tank 3. The second motor 24 drives the second stirring rod 18 to rotate. The crushing blades 19 rotate with the second stirring rod 18 to crush the raw material in the tank. The crushed raw material falls into the mixing tank 2 through the screen plate 16. The storage bottle 26 delivers the stored solvent to the rotating atomizing disc 25 via the delivery pipe 27. The speed control valve 28 controls the solvent flow rate. The solvent flows to the surface of the rotating atomizing disc 25, which rotates at high speed with the second stirring rod 18, shearing and atomizing the flowing droplets. The resulting water mist passes through the atomizing chamber cover 20 and enters the crushing tank 3. The water mist vaporizes upon heating, cooling the tank. The blower 17 pumps room temperature air into the crushing tank 3, accelerating the evaporation of the atomized solvent through forced convection, while simultaneously blowing the steam towards the stirring tank 2 below. Solvent is added to the solvent inlet 4, and the first motor 5 is started. The first motor 5 drives the first stirring rod 13 below to rotate. The stirring blades 15 on the surface of the first stirring rod 13 mix the solvent and the test material at high speed. The silicone scraper 14 on the inner wall of the stirring tank 2 scrapes off the residual debris on the surface to prevent deposition from affecting the test results. After stirring is completed, the control valve 8 is opened, and the solution enters the lower delivery pipe 7. After being filtered by the filter 9, it enters the detector 10 for detection. The waste liquid after detection enters the waste box 12 through the discharge pipe 11. After the detection is completed, the water pump 6 is started, and the clean water is pumped through the water outlet pipe 21 to the spray inlet pipe 22 and sprayed into the stirring tank 2 through the nozzle 23 for rinsing.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pretreatment device suitable for pesticide detection, comprising a base (1), characterized in that: A mixing tank (2) is fixedly connected above the base (1), a crushing tank (3) is fixedly connected above the mixing tank (2), a water pump (6) is fixedly connected above the mixing tank (2), a water outlet pipe (21) is fixedly connected to the end of the water pump (6), a spray inlet pipe (22) is fixedly connected to the end of the water outlet pipe (21), and multiple spray nozzles (23) are fixedly connected below the spray inlet pipe (22).

2. The pretreatment device for pesticide detection according to claim 1, characterized in that: A conveying pipe (7) is fixedly connected to the lower left of the mixing tank (2). A control valve (8) is fixedly connected to the middle of the conveying pipe (7). A filter (9) is fixedly connected to the middle of the conveying pipe (7). A detector (10) is fixedly connected to the left side of the conveying pipe (7). A discharge pipe (11) is fixedly connected to the left side of the detector (10). A waste box (12) is fixedly connected to the left side of the discharge pipe (11).

3. The pretreatment device for pesticide detection according to claim 1, characterized in that: A first motor (5) is fixedly connected to the top of the stirring tank (2), and a solvent inlet (4) is fixedly connected to the top of the stirring tank (2).

4. A pretreatment device suitable for pesticide detection according to claim 3, characterized in that: A first stirring rod (13) is rotatably connected below the first motor (5), and stirring blades (15) are fixedly connected around the first stirring rod (13). A silicone scraper (14) is fixedly connected to the outside of the first stirring rod (13).

5. A pretreatment device suitable for pesticide detection according to claim 1, characterized in that: A second motor (24) is fixedly connected above the crushing tank (3), a second stirring rod (18) is rotatably connected below the second motor (24), crushing blades (19) are fixedly connected around the second stirring rod (18), and a rotating atomizing disc (25) is fixedly connected to the upper part of the second stirring rod (18).

6. A pretreatment device suitable for pesticide detection according to claim 1, characterized in that: A screen plate (16) is fixedly connected to the bottom of the crushing tank (3).

7. A pretreatment device for pesticide detection according to claim 1, characterized in that: A storage bottle (26) is fixedly connected above the crushing tank (3), an infusion tube (27) is fixedly connected to the left side of the storage bottle (26), a speed control valve (28) is fixedly connected to the middle of the infusion tube (27), and an atomizing chamber cover (20) is fixedly connected below the infusion tube (27).

8. A pretreatment device for pesticide detection according to claim 1, characterized in that: A blower (17) is fixedly connected above the crushing tank (3).

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