Fruit and vegetable pesticide residue detection pretreatment device

Abstract

The utility model relates to the technical field of pesticide residue detection, and discloses a fruit and vegetable pesticide residue detection pretreatment device which comprises a workbench, an extrusion cylinder is fixedly installed on the left side of the upper surface of the workbench, and an anti-blocking assembly is arranged in the extrusion cylinder. According to the fruit and vegetable pesticide residue detection pretreatment device, through cooperation of an annular groove, an annular iron ring, a limiting rod, a through hole and an annular magnetic ring, filter cloth can replace a filter plate to make contact with fruits and vegetables, so that the situation that crushed residues generated after the fruits and vegetables are extruded enter filter holes of the filter plate to cause blockage is avoided; according to the fruit and vegetable extrusion pretreatment device, subsequent fruit and vegetable extrusion pretreatment is affected, filter cloth and disintegrating slag can be rapidly and conveniently replaced and cleaned, operation is convenient, through cooperation of a movable cylinder, a rubber ring and an elastic piece, fruits and vegetables located below a pressing plate can be limited, and the situation that the fruits and vegetables leave the extrusion range of the pressing plate, and consequently complete pretreatment of the fruits and vegetables is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pesticide residue detection, in particular to a pretreatment device for detecting pesticide residues in fruits and vegetables. Background Technique

[0002] The application of pesticides can ensure the yield of crops, but it is necessary to detect the content of pesticide residues in fruits and vegetables. During the detection process, it is necessary to crush the fruits and vegetables to squeeze out the fruit juice in order to detect whether there are pesticide residues inside the fruits and vegetables.

[0003] According to a disclosed pretreatment device for detecting pesticide residues in fruits and vegetables (publication number: CN211825327U), in the above application, structures such as an extrusion cylinder, a bottom plate, and a hydraulic pump can be used to squeeze and filter the fruits and vegetables to collect the fruit juice, realizing the extrusion pretreatment of fruit and vegetable products, facilitating subsequent pesticide residue detection, and improving the pretreatment efficiency of fruit and vegetable products.

[0004] However, during the actual use of the above device, when the fruits and vegetables are squeezed by the pressing plate on the bottom plate, the fruit and vegetable residues generated by the squeezing will be forced into the filter holes on the bottom plate, resulting in blockage of the filter holes. This will not only affect the discharge of the fruit juice through the filter holes, thereby affecting the detection of pesticide residues inside the fruits and vegetables, but also hinder the next extrusion pretreatment; in view of this, we propose a pretreatment device for detecting pesticide residues in fruits and vegetables. Content of the Utility Model

[0005] The purpose of the utility model is to provide a pretreatment device for detecting pesticide residues in fruits and vegetables to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A pretreatment device for detecting pesticide residues in fruits and vegetables, including a workbench. On the right side of the upper surface of the workbench, an immersion barrel is fixedly installed. On the left end of the upper surface of the workbench, a lifting cylinder is fixedly installed. At the bottom end of the lifting cylinder, a pressing plate is fixedly installed. When the lifting cylinder is started, it can drive the pressing plate to perform linear motion in the up and down direction. When the pressing plate moves downward, it can cooperate with the filter plate to squeeze the fruits and vegetables, thereby squeezing out the fruit juice. On the left side of the upper surface of the workbench, an extrusion cylinder is fixedly installed. At the left bottom end of the extrusion cylinder, a liquid discharge pipe is provided to discharge the fruit juice inside the extrusion cylinder. Inside the extrusion cylinder, a filter plate is fixedly installed. Inside the extrusion cylinder, an anti-blocking component is provided. The anti-blocking component includes:

[0007] An annular groove, which is opened on the outer surface of the outer circle of the upper surface of the filter plate;

[0008] An annular iron ring is provided above the annular groove. A limiting rod is fixedly installed at the bottom end of the annular iron ring. A filter cloth is arranged below the annular iron ring. The filter cloth is circular in shape and has the same size as the filter plate. Through holes are formed on the upper surface of the filter cloth. An annular magnetic ring is arranged below the filter cloth. The annular magnetic ring can be magnetically attracted to the annular iron ring to squeeze and fix the filter cloth.

[0009] A moving cylinder is sleeved outside the pressing plate. A rubber ring is fixedly installed at the bottom end of the moving cylinder. An elastic member is fixedly installed on the inner top surface of the moving cylinder. When the moving cylinder moves upward, the elastic member can be stretched to generate elastic potential energy. The elastic member is composed of a telescopic rod and a tension spring.

[0010] Preferably, the annular magnetic ring is located inside the annular groove and has a size adapted to that of the annular groove. When the annular magnetic ring completely enters the annular groove, the bottom surface of the filter cloth can be made to fit the upper surface of the filter plate.

[0011] Preferably, the limiting rod is sleeved inside the through hole.

[0012] Preferably, an opening is formed on the upper surface of the moving cylinder. The bottom end of the elastic member is fixedly connected to the upper surface of the pressing plate.

[0013] Preferably, a groove is formed on the inner wall surface of the annular iron ring. A limiting groove is formed on the inner wall surface of the extrusion cylinder. A limiting block is slidably connected inside the limiting groove.

[0014] Preferably, the outer wall of the limiting block is fixedly connected to the outer wall surface of the annular iron ring. When the annular iron ring moves, the limiting block can be driven to move synchronously.

[0015] Compared with the prior art, the present utility model provides a pre-treatment device for detecting pesticide residues in fruits and vegetables, having the following beneficial effects:

[0016] 1. For this pre-treatment device for detecting pesticide residues in fruits and vegetables, through the cooperation of the annular groove, annular iron ring, limiting rod, through hole and annular magnetic ring, the filter cloth can be used to contact the fruits and vegetables instead of the filter plate, thereby preventing the crushed residues generated after the fruits and vegetables are squeezed from entering the filter holes of the filter plate to cause blockage, affecting the subsequent extrusion pre-treatment of the fruits and vegetables, and the filter cloth and crushed residues can be quickly and conveniently replaced and cleaned, which is convenient for operation. Through the cooperation of the moving cylinder, rubber ring and elastic member, the fruits and vegetables located below the pressing plate can be limited to prevent the fruits and vegetables from leaving the extrusion range of the pressing plate, resulting in affecting the complete pre-treatment of the fruits and vegetables.

[0017] 2. The pre-treatment device for detecting pesticide residues in fruits and vegetables can be operated by staff to take and replace the annular iron ring through the provided groove. Through the cooperation of the provided limiting groove and limiting block, the movement of the annular iron ring inside the extrusion cylinder can be guided and limited, preventing the annular iron ring from getting stuck inside the extrusion cylinder and affecting the pre-treatment of fruits and vegetables. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0019] Figure 2 is a schematic structural diagram of a partial cross-section inside the extrusion cylinder of the present utility model;

[0020] Figure 3 is a schematic structural diagram of part A of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the annular iron ring and the annular magnetic ring of the present utility model.

[0022] In the figure: 1, workbench; 2, soaking barrel; 3, lifting cylinder; 4, pressing plate; 5, extrusion cylinder; 6, filter plate; 701, annular groove; 702, annular iron ring; 703, limiting rod; 704, filter cloth; 705, through hole; 706, annular magnetic ring; 707, moving cylinder; 708, rubber ring; 709, elastic member; 801, groove; 802, limiting groove; 803, limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] As Figures 1-4 shown, the present utility model provides a technical solution: a pre-treatment device for detecting pesticide residues in fruits and vegetables, including a workbench 1, a soaking barrel 2 is fixedly installed on the right side of the upper surface of the workbench 1, a lifting cylinder 3 is fixedly installed on the left end of the upper surface of the workbench 1, a pressing plate 4 is fixedly installed at the bottom end of the lifting cylinder 3, an extrusion cylinder 5 is fixedly installed on the left side of the upper surface of the workbench 1, a filter plate 6 is fixedly installed inside the extrusion cylinder 5, and an anti-blocking component is arranged inside the extrusion cylinder 5.

[0024] The anti-blocking component includes: an annular groove 701, an annular iron ring 702 and a moving cylinder 707. The annular groove 701 is opened on the outer surface of the upper surface of the filter plate 6. The annular iron ring 702 is arranged above the annular groove 701. A limiting rod 703 is fixedly installed at the bottom end of the annular iron ring 702. A filter cloth 704 is arranged below the annular iron ring 702. Through holes 705 are opened on the upper surface of the filter cloth 704. The filter cloth 704 can be preliminarily limited by the cooperation of the through holes 705 and the limiting rod 703. The limiting rod 703 is sleeved inside the through holes 705. An annular magnetic ring 706 is arranged below the filter cloth 704. The annular magnetic ring 706 is located inside the annular groove 701 and is adapted to the size of the annular groove 701. Round holes adapted to the limiting rod 703 are opened on the upper surface of the annular magnetic ring 706.

[0025] The through holes 705 can be aligned with the limiting rod 703 so that the filter cloth 704 is installed at the bottom of the annular iron ring 702. Subsequently, the limiting rod 703 is aligned with the round holes on the annular magnetic ring 706 so that the annular magnetic ring 706 is installed at the bottom end of the filter cloth 704. At this time, the annular magnetic ring 706 will be magnetically adsorbed to the annular iron ring 702 to further fix and limit the filter cloth 704, avoiding the filter cloth 704 from falling off when the annular iron ring 702 is installed inside the extrusion cylinder 5. When the annular magnetic ring 706 moves downward inside the extrusion cylinder 5, it can completely enter the annular groove 701. At this time, the bottom surface of the filter cloth 704 will be in contact with the upper surface of the filter plate 6. When the pressing plate 4 moves downward to squeeze the fruits and vegetables, the filter cloth 704 can prevent the fruit and vegetable residues from being crushed and stuffed into the filter holes of the filter plate 6, which may affect the subsequent extrusion and filtration of fruit and vegetable juice. After the extrusion is completed, the annular iron ring 702 can be directly taken out. By forcefully removing the annular magnetic ring 706, the filter cloth 704 can be removed to complete the cleaning of the fruit and vegetable residues. Then, by replacing the new filter cloth 704, the next pretreatment of the fruits and vegetables can be carried out.

[0026] The moving cylinder 707 is sleeved outside the pressing plate 4. To prevent the pressing plate 4 from squeezing the annular iron ring 702 and causing damage to the device, the pressing plate 4 can be set to be smaller than the size of the annular iron ring 702. An opening is provided on the upper surface of the moving cylinder 707, and the opening can avoid hindering the movement of the lifting cylinder 3 driving the pressing plate 4. A rubber ring 708 is fixedly installed at the bottom end of the moving cylinder 707. The rubber ring 708 can contact the filter cloth 704 instead of the moving cylinder 707, avoiding hard contact between the moving cylinder 707 and the filter cloth 704 and causing damage to the filter cloth 704. An elastic member 709 is fixedly installed on the inner top surface of the moving cylinder 707, and the bottom end of the elastic member 709 is fixedly connected to the upper surface of the pressing plate 4. When the pressing plate 4 moves downward, the moving cylinder 707 will contact the filter cloth 704 first and limit the fruits and vegetables inside the moving cylinder 707, preventing the fruits and vegetables from escaping the extrusion range of the pressing plate 4. As the pressing plate 4 continues to move downward, the moving cylinder 707 will move upward relative to the pressing plate 4. At this time, the elastic member 709 will be stretched to generate elastic potential energy. After the extrusion of the fruits and vegetables is completed, when the pressing plate 4 moves upward to reset, the moving cylinder 707 will reset under the action of the elastic potential energy of the elastic member 709, facilitating the next use.

[0027] A groove 801 is provided on the inner wall surface of the annular iron ring 702, which can facilitate the staff to pick up the annular iron ring 702. A limiting groove 802 is provided on the inner wall surface of the extrusion cylinder 5. The top end of the limiting groove 802 is of an open structure. A limiting block 803 is slidably connected inside the limiting groove 802. The outer wall of the limiting block 803 is fixedly connected to the outer wall surface of the annular iron ring 702. The limiting block 803 can move linearly in the up and down directions inside the limiting groove 802. Through the cooperation of the limiting block 803 and the limiting groove 802, the movement of the annular iron ring 702 can be guided and limited, preventing the annular iron ring 702 from getting stuck inside the extrusion cylinder 5.

[0028] In the present utility model, during use, align the through hole 705 with the limit rod 703, then install the filter cloth 704 at the bottom end of the annular iron ring 702, and then install the annular magnetic ring 706 at the bottom end of the filter cloth 704 to complete the limit fixation of the filter cloth 704. Subsequently, install the limit block 803 into the limit groove 802. Under the limitation of the limit block 803 and the limit groove 802, drive the annular iron ring 702 to move downward, so that the annular magnetic ring 706 enters into the annular groove 701, and the bottom surface of the filter cloth 704 is mutually attached to the upper surface of the filter plate 6. At this time, the filter cloth 704 can drive the filter plate 6 to contact with the fruits and vegetables, thereby preventing the squeezed fruit and vegetable residues from entering and blocking the filter holes of the filter plate 6 and affecting the next filtration of fruit and vegetable juice. Subsequently, start the lifting cylinder 3 to drive the pressing plate 4 to move downward to squeeze the fruits and vegetables. Through the cooperation of the moving cylinder 707, the rubber ring 708 and the elastic member 709, the fruits and vegetables can be limited, preventing the fruits and vegetables from leaving the extrusion range of the pressing plate 4 after being squeezed and affecting the pretreatment of the fruits and vegetables.

[0029] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A fruit and vegetable pesticide residue detection pretreatment device, comprising a workbench (1), a soaking bucket (2) is fixedly mounted on the right side of the upper surface of the workbench (1), a lifting cylinder (3) is fixedly mounted on the left end of the upper surface of the workbench (1), a pressing plate (4) is fixedly mounted on the bottom end of the lifting cylinder (3), an extrusion cylinder (5) is fixedly mounted on the left side of the upper surface of the workbench (1), and a filter plate (6) is fixedly mounted inside the extrusion cylinder (5), characterized in that: An anti-blocking component is arranged inside the extrusion cylinder (5), and the anti-blocking component comprises: An annular groove (701), the annular groove (701) being formed on the outer surface of the upper surface of the filter plate (6); An annular iron ring (702), the annular iron ring (702) being arranged above the annular groove (701), a limiting rod (703) being fixedly mounted at the bottom end of the annular iron ring (702), a filter cloth (704) being arranged below the annular iron ring (702), a through hole (705) being provided on the upper surface of the filter cloth (704), and an annular magnetic ring (706) being arranged below the filter cloth (704); A movable cylinder (707) is sleeved on the outer side of the pressure plate (4), a rubber ring (708) is fixedly installed on the bottom end of the movable cylinder (707), and an elastic member (709) is fixedly installed on the inner top surface of the movable cylinder (707).

2. The fruit and vegetable pesticide residue detection pretreatment device according to claim 1, characterized in that: The annular magnetic ring (706) is located inside the annular groove (701) and its size is adapted to that of the annular groove (701).

3. The fruit and vegetable pesticide residue detection pretreatment device according to claim 1, characterized in that: The limiting rod (703) is sleeved inside the through hole (705).

4. The fruit and vegetable pesticide residue detection pretreatment device according to claim 1, characterized in that: The upper surface of the movable cylinder (707) is provided with an opening, and the bottom end of the elastic member (709) is fixedly connected to the upper surface of the pressing plate (4).

5. The fruit and vegetable pesticide residue detection pretreatment device according to claim 1, characterized in that: The inner wall surface of the annular iron ring (702) is provided with a groove (801), the inner wall surface of the extrusion cylinder (5) is provided with a limit groove (802), and the inner part of the limit groove (802) is slidably connected to a limit block (803).

6. The fruit and vegetable pesticide residue detection pretreatment device according to claim 5, characterized in that: The outer wall of the limit block (803) is fixedly connected to the outer wall surface of the annular iron ring (702).

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