A pretreatment device for pesticide detection of fruits and vegetables

Abstract

The utility model relates to detection device technical field especially relates to a kind of pretreatment device before fruit and vegetable pesticide detection, it includes: taking material cylinder, dosing cylinder is provided on the taking material cylinder, the top of dosing cylinder is provided with top cover, cutting and stirring subassembly is provided in the top cover, convenient taking material subassembly is provided in the taking material cylinder.The utility model is driven rotating by motor one by setting cutting and stirring subassembly, sun gear is rotated by shaft, sun gear is engaged with planetary gear, planetary gear is engaged with the gear ring of top cover inner wall again, so that stirring shaft realizes autorotation while revolution, the cutting and stirring effect of compound motion mode is enhanced, can let the fruit and vegetable raw materials and solvent in dosing cylinder fully mix evenly, effectively improve the quality of pesticide detection before pretreatment, secondly, cutting knife is driven under the revolution and autorotation of stirring shaft, can all-round cutting to fruit and vegetable raw materials, make raw material breakage more thoroughly, and solvent mixes more fully.

Description

Technical Field

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

[0002] Pretreatment devices for pesticide testing of fruits and vegetables are specialized equipment used to remove impurities, extract or concentrate target components, and bring fruit and vegetable samples to a suitable state for subsequent pesticide residue analysis and testing.

[0003] However, traditional pretreatment devices for pesticide testing of fruits and vegetables have simple mixing structures in the cutting and mixing stage, which often only allows rotation in one direction. This results in insufficient cutting of the raw materials, limited material breakage, and difficulty in fully and evenly mixing the raw materials with the solvent, thus affecting the quality of pretreatment before pesticide testing and potentially leading to deviations in test results. Secondly, in terms of liquid collection, traditional devices require the dispensing cylinder to be disassembled before liquid can be collected, which is cumbersome and inconvenient. This not only increases the difficulty and labor intensity of the operator but also causes problems such as material spillage due to improper operation, reducing the overall convenience and flexibility of use.

[0004] Prior art 1 (Chinese patent application number CN201821111540.7, application date 2018-07-13) discloses a pretreatment device for pesticide testing of fruits and vegetables, including a cylinder, which includes a dispensing cylinder and a receiving cylinder connected to it by threads. The dispensing cylinder is provided with a dispensing cylinder cover plate, and a cutting device is provided inside the dispensing cylinder. A liquid outlet is provided at the bottom of the dispensing cylinder. A rotating plate is provided above the receiving cylinder through a rotating plate shaft. Feeding pipes and cleaning devices are provided on both sides of the receiving cylinder. A main motor is connected to the bottom of the receiving cylinder through a main shaft. A base is provided below the main shaft motor. This invention solves the problems of complex structure, inconvenient cleaning, and improper collection and treatment of waste liquid in existing pretreatment devices for pesticide testing of fruits and vegetables.

[0005] Prior art 2 (Chinese patent application number CN202022656773.9, application date 2020-11-17) discloses a pretreatment device for pesticide testing of fruits and vegetables, including a main body of the device. The upper end of the main body of the device is provided with a separating structure. A movable plate is provided on one side of the separating structure. A connecting block is provided on the outer surface of the movable plate. A connecting bolt is provided on the outer surface of the connecting block. A motor is provided at the upper end of the movable plate. A rotating shaft is provided at the lower end of the movable plate. By providing a separating structure, it can meet the separation of different fruits and vegetables or different batches of fruits and vegetables, thereby facilitating the differentiation of fruits and vegetables during subsequent pesticide testing. At the same time, it can meet the needs of placing multiple groups of fruits and vegetables. By providing a movable plate, connecting block, connecting bolt, motor, rotating shaft, connecting groove, fixing hole and rotating brush, it is convenient to inspect and maintain the motor and replace the rotating brush. The effect of use is good. Utility Model Content

[0006] The purpose of this invention is to provide a pretreatment device for pesticide testing of fruits and vegetables, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: it includes a material taking cylinder, on which a dispensing cylinder is provided, a top cover is provided on the top of the dispensing cylinder, a cutting and stirring assembly is provided inside the top cover, and a convenient material taking assembly is provided inside the material taking cylinder.

[0008] As a preferred embodiment of this utility model, the cutting and mixing assembly includes a pair of mounting seats 1 disposed on the outer wall of the mixing cylinder, each of the two mounting seats 1 being provided with a telescopic cylinder 1, and a pair of mounting seats 2 disposed on the outer wall of the top cover, the top of the telescopic rod of the telescopic cylinder 1 on the same side being connected to the mounting seat 2, a motor 1 disposed on the top of the top cover, a rotating shaft disposed on the transmission end of the motor 1, a sun gear sleeved on the outer side of the rotating shaft, and a circular plate disposed on the end of the rotating shaft away from the motor 1.

[0009] As a preferred embodiment of this utility model, a guide rail is provided on the inner top surface of the top cover, a planetary carrier is slidably mounted on the guide rail, and several stirring shafts are mounted on the planetary carrier via bearing seats. Each stirring shaft is fitted with a planetary gear at its top, and the planetary gears mesh with a sun gear. A gear ring is provided on the inner wall of the top cover, and the gear ring meshes with the planetary gears. A cutting blade is fitted on the outer side of each stirring shaft. A flow guide shell is provided at the bottom of the mixing cylinder, and the bottom of the flow guide shell penetrates the top of the feeding cylinder.

[0010] As a preferred embodiment of this utility model, the convenient material handling component includes two pairs of support seats disposed on the top surface of the material handling cylinder. A bidirectional lead screw is disposed between each pair of support seats. A sprocket two is sleeved on one end of the upper bidirectional lead screw, and a sprocket one is sleeved on one end of the lower bidirectional lead screw. A chain is disposed between the sprocket one and the sprocket two. A motor two is disposed on one outer wall of the material handling cylinder. One end of the lower bidirectional lead screw is connected to the transmission end of the motor two. A pair of drive blocks are spirally sleeved on the outer sides of the two bidirectional lead screws. A pair of guide rails two are disposed inside the material handling cylinder, and the two drive blocks are slidably disposed on the guide rails two.

[0011] As a preferred embodiment of this utility model, a first sealing plate is provided on one side of the driving block on the left, and a second sealing plate is provided on one side of the driving block on the right. A plug is provided on one side of the first sealing plate, and a slot is provided on one side of the second sealing plate corresponding to the position of the plug. A sealing ring is provided on one side of the second sealing plate.

[0012] As a preferred embodiment of this utility model, the material taking cylinder is provided with a pair of telescopic cylinders II, the top of the telescopic rod of the telescopic cylinder II on the same side is connected to the mounting base I, the bottom of the material taking cylinder is provided with a discharge pipe, and the discharge pipe is provided with an electric valve.

[0013] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: 1. This utility model, by setting up a cutting and stirring assembly, uses a motor to drive the rotating shaft to rotate. The rotating shaft drives the sun gear to rotate, and the sun gear meshes with the planetary gears, which in turn mesh with the gear ring on the inner wall of the top cover. This allows the stirring shaft to rotate on its own axis while revolving around the central axis. This compound motion enhances the cutting and stirring effect, allowing the fruit and vegetable raw materials and solvent in the mixing cylinder to be fully and evenly mixed, effectively improving the quality of pretreatment before pesticide testing. Secondly, driven by the revolution and rotation of the stirring shaft, the cutting blade can cut the fruit and vegetable raw materials from all directions, making the raw materials more thoroughly crushed and more fully mixed with the solvent. In addition, the telescopic cylinder drives the top cover to rise and fall through the telescopic rod, realizing the opening and closing of the mixing cylinder. This is convenient to operate and facilitates feeding and subsequent cleaning before and after stirring.

[0014] 2. This utility model features a convenient material handling component. Motor 2 drives the bidirectional lead screw at its transmission end to rotate. Power is transmitted via sprockets 1 and 2 and a chain, driving the bidirectional lead screw on the other side to rotate synchronously. This converts the rotational motion into linear motion of the drive block, thereby controlling the opening and closing of sealing plates 1 and 2. This allows for precise control of the timing and flow rate of material into the material handling cylinder, facilitating material handling operations according to actual needs. Furthermore, the insertion block on sealing plate 1 engages with the slot on sealing plate 2, ensuring accurate connection between the two plates. A sealing ring on one side of sealing plate 2 is squeezed when sealing plates 1 and 2 are closed, effectively preventing material leakage and ensuring the device's airtightness. Additionally, telescopic cylinder 2 can drive the feeding cylinder to rise and fall, facilitating separation of the feeding cylinder from the material handling cylinder during material handling and cleaning of the entire device after pretreatment, thus improving the ease and flexibility of use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cutting and stirring assembly structure of this utility model; Figure 3 This is a schematic diagram of the cutting blade structure in the cutting and stirring assembly of this utility model; Figure 4 This is a schematic diagram of the convenient material handling component of this utility model; Figure 5This is a schematic diagram of the discharge pipe structure in the convenient material handling component of this utility model.

[0016] Reference numerals: 1. Feeding cylinder; 2. Batching cylinder; 3. Top cover; 4. Cutting and mixing assembly; 41. Mounting base one; 42. Telescopic cylinder one; 43. Mounting base two; 44. Motor one; 45. Rotating shaft; 46. Sun gear; 47. Circular plate; 48. Planetary carrier; 49. Mixing shaft; 410. Planetary gear; 411. Gear ring; 412. Guide rail one; 413. Cutting blade; 414. Flow guide shell; 5. Convenient feeding assembly; 51. Support base; 52. Two-way lead screw; 53. Sprocket one; 54. Sprocket two; 55. Chain; 56. Motor two; 57. Drive block; 58. Guide rail two; 59. Sealing plate one; 510. Sealing plate two; 511. Insert block; 512. Sealing ring; 513. Telescopic cylinder two; 514. Discharge pipe; 515. Electric valve. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0018] like Figures 1-5 As shown, the present invention proposes a pretreatment device for pesticide testing of fruits and vegetables, which includes a feeding cylinder 1, a dispensing cylinder 2 on the feeding cylinder 1, a top cover 3 on the top of the dispensing cylinder 2, a cutting and stirring assembly 4 inside the top cover 3, and a convenient feeding assembly 5 inside the feeding cylinder 1.

[0019] The cutting and mixing assembly 4 includes a pair of mounting seats 41 disposed on the outer wall of the mixing cylinder 2. Mounting seats 41 provide a mounting base for telescopic cylinders 42. Each mounting seat 41 is equipped with a telescopic cylinder 42. The telescopic cylinders 42 drive the top cover 3 to rise and fall via the extension and retraction of their telescopic rods, thus opening and closing the mixing cylinder 2. A pair of mounting seats 43 are disposed on the outer wall of the top cover 3. The top of the telescopic rod of the telescopic cylinder 42 on the same side is connected to the mounting seat 43. The mounting seat 43 is connected to the telescopic cylinder 42. The telescopic rod of 42 and the top cover 3 transmit the power of the telescopic cylinder to the top cover 3. A motor 44 is installed on the top of the top cover 3. A rotating shaft 45 is installed at the transmission end of the motor 44. The motor 44 provides the rotation power for the rotating shaft 45. A sun gear 46 is sleeved on the outside of the rotating shaft 45. When the rotating shaft 45 rotates, it drives the sun gear 46 to rotate synchronously. A circular plate 47 is installed at the end of the rotating shaft 45 away from the motor 44. The circular plate 47 and the inner wall of the bottom of the top cover 3 form an annular guide rail to guide the movement of the stirring shaft 49.

[0020] A guide rail 412 is provided on the inner top surface of the top cover 3. The guide rail 412 provides guidance for the planetary carrier 48 and ensures the stability of the planetary carrier 48 during rotation. The planetary carrier 48 is slidably mounted on the guide rail 412. The planetary carrier 48 provides the mounting base for the stirring shafts 49. Several stirring shafts 49 are mounted on the planetary carrier 48 through bearing seats. The stirring shafts 49 provide the mounting base for the planetary gears 410 and the cutting blades 413, realizing cutting and stirring in revolution and rotation. A planetary gear 410 is fitted on the top of each stirring shaft 49. Several planetary gears 410 are connected to the sun gear. The top cover 3 has a gear ring 411 on its inner wall, which meshes with the planetary gear 410. The planetary gear 410 meshes with the sun gear 46 and the gear ring 411 to realize the revolution and rotation of the stirring shaft 49. The outer sides of several stirring shafts 49 are fitted with cutting blades 413. The cutting blades 413 cut and stir the fruit and vegetable raw materials and solvent in the mixing cylinder 2 to make them evenly mixed. The bottom of the mixing cylinder 2 is provided with a guide shell 414. The bottom of the guide shell 414 penetrates the top of the receiving cylinder 1. The guide shell 414 is used to guide the mixed materials into the receiving cylinder 1.

[0021] The convenient material handling component 5 includes two pairs of support seats 51 disposed on the top surface inside the material handling cylinder 1. A bidirectional lead screw 52 is disposed between each pair of support seats 51. The support seats 51 provide support for the bidirectional lead screw 52 to ensure the stability of the bidirectional lead screw 52 during rotation. A sprocket 2 54 is sleeved on one end of the upper bidirectional lead screw 52, ​​and a sprocket 1 53 is sleeved on one end of the lower bidirectional lead screw 52. A chain 55 is disposed between the sprocket 1 53 and the sprocket 2 54. A motor 2 56 is disposed on one outer wall of the material handling cylinder 1. One end of the lower bidirectional lead screw 52 is connected to the transmission end of the motor 2 56, and the motor 2 56 drives its transmission end. The rotation of the bidirectional lead screw 52 simultaneously drives the first sprocket 53 to rotate. The first sprocket 53 transmits power to the second sprocket 54 through the chain 55, thereby driving the other bidirectional lead screw 52 to rotate, achieving synchronous rotation of the two bidirectional lead screws 52 with the same direction of rotation. A pair of drive blocks 57 are helically sleeved on the outer side of the two bidirectional lead screws 52, converting the rotational motion of the bidirectional lead screws 52 into the linear motion of the drive blocks 57. A pair of guide rails 58 are provided inside the material picking cylinder 1, and the two drive blocks 57 are slidably mounted on the guide rails 58. The guide rails 58 provide guidance for the drive blocks 57, ensuring the stability of the drive blocks 57 when they move.

[0022] A sealing plate 59 is provided on one side of the left drive block 57, and a sealing plate 510 is provided on one side of the right drive block 57. The sealing plate 59 and the sealing plate 510 control the flow of material into the feeding cylinder 1 by opening and closing. A plug 511 is provided on one side of the sealing plate 59, and a slot is provided on one side of the sealing plate 510 corresponding to the position of the plug 511. The cooperation of the plug 511 and the slot ensures that the sealing plate 59 and the sealing plate 510 are accurately connected to ensure the sealing effect. A sealing ring 512 is provided on one side of the sealing plate 510. The sealing ring 512 can be squeezed when the sealing plate is closed to prevent material leakage.

[0023] A pair of telescopic cylinders 513 are installed on the feeding cylinder 1. The top of the telescopic rod of the telescopic cylinder 513 on the same side is connected to the mounting base 41. The telescopic cylinder 513 drives the feeding cylinder 2 to rise and fall through the telescopic rod, which facilitates material picking and cleaning of the device. A discharge pipe 514 is installed at the bottom of the feeding cylinder 1. The discharge pipe 514 is used to discharge the remaining waste liquid in the device. An electric valve 515 is installed on the discharge pipe 514. The electric valve 515 can control the opening and closing of the discharge pipe 514.

[0024] In operation, the operator first extends the telescopic rod of telescopic cylinder 42, driving the top cover 3 to rise and open the mixing cylinder 2. Then, the vegetables and fruits to be tested for pesticide residues are placed into the mixing cylinder 2, followed by the addition of the required solvent. Afterward, the operator retracts the telescopic rod of telescopic cylinder 42, causing the top cover 3 to descend and close the mixing cylinder 2. The operator then starts motor 44, which drives the rotating shaft 45 to rotate. The rotating shaft 45 drives the sun gear 46 to rotate synchronously. Because the sun gear 46 and the planetary carrier 4... Planetary gear 410 on plate 8 meshes with the gear ring 411 on the inner wall of top cover 3. When sun gear 46 rotates, planetary gear 410 drives stirring shaft 49 to revolve around sun gear 46. At the same time, planetary gear 410 and stirring shaft 49 also rotate on their own axis. Stirring shaft 49 moves along the annular guide rail formed between circular plate 47 and the bottom inner wall of top cover 3. Cutting blade 413 on it cuts and stirs the fruit and vegetable raw materials and solvent in mixing cylinder 2, so that the two are fully mixed evenly.

[0025] After mixing is complete, motor 2 (56) is started. Motor 2 (56) drives the bidirectional lead screw 52 at its transmission end to rotate, which in turn drives sprocket 1 (53) to rotate. Sprocket 1 (53) transmits power to sprocket 2 (54) through chain 55, which in turn drives the bidirectional lead screw 52 on the other side to rotate, achieving synchronous rotation of the two bidirectional lead screws 52 with the same direction of rotation. The bidirectional lead screw 52 converts the rotational motion into the linear motion of the drive block 57, causing the drive blocks 57 on both sides to move along guide rail 2 (58), separating the sealing plate 1 (59) from the sealing plate 2 (510). At this time, the mixed material flows into the receiving cylinder 1 along the guide shell 414 at the bottom of the mixing cylinder 2. The operator can control the extension of the telescopic rod of telescopic cylinder 2 (513) to drive the mixing cylinder 2 to separate from the receiving cylinder 1 for easy material removal. After material collection is completed, open the electric valve 515 on the discharge pipe 514 to discharge the remaining waste liquid through the discharge pipe 514 into the entire device. The lifting function of the top cover 3 and the mixing cylinder 2 makes it convenient for the operator to clean the entire device after pretreatment. After cleaning, control the telescopic rods of telescopic cylinder 1 42 and telescopic cylinder 2 513 to retract, so that the top cover 3, mixing cylinder 2 and material collection cylinder 1 are resealed into a whole. Then control motor 2 56 to reverse, so that sealing plate 1 59 and sealing plate 2 510 move closer to each other. The insert 511 on sealing plate 1 59 is inserted into the slot of sealing plate 2 510. At the same time, when sealing plate 1 59 and sealing plate 2 510 close, they will squeeze the sealing ring 512, effectively preventing material from leaking from the gaps when mixing in the mixing cylinder 2.

[0026] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A pretreatment device for pesticide testing of fruits and vegetables, comprising: The material taking cylinder (1) is characterized in that: a dispensing cylinder (2) is provided on the material taking cylinder (1), a top cover (3) is provided on the top of the dispensing cylinder (2), a cutting and stirring assembly (4) is provided inside the top cover (3), and a convenient material taking assembly (5) is provided inside the material taking cylinder (1). The cutting and stirring assembly (4) includes a pair of mounting seats (41) on the outer wall of the mixing cylinder (2). Each of the two mounting seats (41) is equipped with a telescopic cylinder (42). A pair of mounting seats (43) are provided on the outer wall of the top cover (3). The top of the telescopic rod of the telescopic cylinder (42) on the same side is connected to the mounting seat (43). A motor (44) is provided on the top of the top cover (3). A rotating shaft (45) is provided at the transmission end of the motor (44). A sun gear (46) is sleeved on the outer side of the rotating shaft (45). A circular plate (47) is provided at the end of the rotating shaft (45) away from the motor (44). The convenient material picking component (5) includes two pairs of support seats (51) set on the top surface of the material picking cylinder (1). A bidirectional lead screw (52) is set between each pair of support seats (51). A sprocket two (54) is sleeved on one end of the upper bidirectional lead screw (52), and a sprocket one (53) is sleeved on one end of the lower bidirectional lead screw (52). A chain (55) is set between the sprocket one (53) and the sprocket two (54). A motor two (56) is set on one side of the outer wall of the material picking cylinder (1). One end of the lower bidirectional lead screw (52) is connected to the transmission end of the motor two (56). A pair of drive blocks (57) are spirally sleeved on the outer side of the two bidirectional lead screws (52). A pair of guide rails two (58) are set inside the material picking cylinder (1). The two drive blocks (57) are slidably set on the guide rails two (58).

2. The pretreatment device for pesticide detection in fruits and vegetables according to claim 1, characterized in that: A guide rail (412) is provided on the inner top surface of the top cover (3). A planetary carrier (48) is slidably provided on the guide rail (412). Several stirring shafts (49) are provided on the planetary carrier (48) through bearing seats. A planetary gear (410) is sleeved on the top of each stirring shaft (49). Several planetary gears (410) mesh with a sun gear (46). A gear ring (411) is provided on the inner wall of the top cover (3). The gear ring (411) meshes with the planetary gear (410). A cutting blade (413) is sleeved on the outer side of several stirring shafts (49). A flow guide shell (414) is provided at the bottom of the mixing cylinder (2). The bottom of the flow guide shell (414) penetrates the top of the feeding cylinder (1).

3. The pretreatment device for pesticide detection in fruits and vegetables according to claim 1, characterized in that: A sealing plate 1 (59) is provided on one side of the drive block (57) on the left, and a sealing plate 2 (510) is provided on one side of the drive block (57) on the right. An insert (511) is provided on one side of the sealing plate 1 (59), and a slot is provided on one side of the sealing plate 2 (510) corresponding to the position of the insert (511). A sealing ring (512) is provided on one side of the sealing plate 2 (510).

4. The pretreatment device for pesticide detection in fruits and vegetables according to claim 1, characterized in that: The material taking cylinder (1) is provided with a pair of telescopic cylinders (513). The top of the telescopic rod of the telescopic cylinder (513) on the same side is connected to the mounting base (41). The bottom of the material taking cylinder (1) is provided with a discharge pipe (514). An electric valve (515) is provided on the discharge pipe (514).

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