Pretreatment device for food pesticide residue detection

Abstract

The utility model discloses a food pesticide residue detection pretreatment device which comprises a barrel body and a barrel cover used for sealing the barrel body, a blade used for crushing a sample is arranged in the barrel body, a dust removal assembly used for cleaning dust generated when the sample is crushed is arranged on the lower surface of the barrel cover, and a filtering assembly convenient to take out is arranged in the barrel body; the dust removal assembly comprises a shell installed on the lower surface of the barrel cover, a sealing ring is installed at the lower end of the shell, an air inlet pipe is installed on one side of the shell, a baffle is arranged in the air inlet pipe, a magnet is embedded in one side of the baffle, an electromagnet corresponding to the magnet is installed on the inner wall of the air inlet pipe, the electromagnet makes contact with the magnet, and a rotating frame is installed at the lower end of the baffle. The rotating frame is rotationally connected with the air inlet pipe, the outer side of the rotating frame is sleeved with a torsional spring, and an air outlet pipe is installed on the other side of the shell. The dust removal assembly is arranged and used for filtering dust, so that the situation that the dust with pesticide residues overflows to the outside and pollutes the external environment is avoided, and the health of operators is protected.

Description

Technical Field

[0001] This utility model relates to the field of food pesticide residue detection technology, and more specifically, to a food pesticide residue detection pretreatment device. Background Technology

[0002] Food pesticide residue testing is a crucial step in ensuring food safety, and pretreatment equipment plays a key role in this process. One important pretreatment step is food pulverization. Food pulverization pretreatment equipment is mainly used to process food samples into homogenates or fine particles suitable for analysis. This step aims to ensure that pesticide residues can be fully extracted and detected, improving the accuracy and reliability of the analysis.

[0003] In the prior art, Chinese utility model patent with publication number CN214096813U discloses a pretreatment device for facilitating pesticide detection in food, including a discharge port, a support, a main body, and a feed port. The main body is fixed to the top of the support, and the discharge port is installed at the bottom of the main body. A viewing window is fixed to the surface of the main body. A rotating shaft is installed at the bottom of the servo motor, and blades are fixed to the surface of the rotating shaft. A heating structure is installed inside the main body.

[0004] When the above-mentioned pretreatment device is used to crush dry or brittle foods (such as grains, tea, dried herbs, etc.), due to their low moisture content and brittle texture, fine particles are easily generated, forming dust. If the device is not well sealed or the lid is opened, there is a possibility that residual pesticide dust may spill out into the outside world, polluting the external environment.

[0005] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a food pesticide residue detection pretreatment device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A food pesticide residue detection pretreatment device includes a barrel body and a barrel lid for sealing the barrel body. The barrel body is equipped with blades for crushing samples. A dust removal assembly for cleaning dust generated during sample crushing is installed on the lower surface of the barrel lid. A filter assembly that is easy to remove is also provided inside the barrel body. The dust removal assembly includes a housing installed on the lower surface of the barrel lid. A sealing ring is installed at the lower end of the housing. An air inlet pipe is installed on one side of the housing. A baffle is provided inside the air inlet pipe. A magnet is embedded on one side of the baffle. An electromagnet corresponding to the magnet is installed on the inner wall of the air inlet pipe, and the electromagnet is in contact with the magnet. A rotating frame is installed at the lower end of the baffle. The rotating frame is rotatably connected to the air inlet pipe. A torsion spring is sleeved on the outer side of the rotating frame. An air outlet pipe is installed on the other side of the housing.

[0009] Furthermore, a filter plate is installed at one end of the air outlet pipe, and a fan is installed at the other end of the air outlet pipe.

[0010] Furthermore, the bucket lid is rotatably connected to a rotating rod, one end of which extends outside the bucket lid and is connected to the output shaft of the motor, and the other end of which extends into the bucket body. Multiple blades are installed on the other end of the rotating rod.

[0011] Furthermore, the filter assembly includes a mounting cylinder detachably installed inside the barrel. A guide ring is attached to the lower end of the mounting cylinder, and an elastic ring is provided above the guide ring. The edge of the elastic ring is fixedly connected to the inner wall of the mounting cylinder. A sieve plate is provided between the elastic ring and the guide ring. The upper and lower surfaces of the sieve plate respectively abut against the elastic ring and the guide ring. A limiting ring is provided on the upper surface of the elastic ring, and the edge of the limiting ring is fixedly connected to the inner wall of the mounting cylinder.

[0012] Furthermore, the inner wall of the barrel is provided with an installation groove, and the installation cylinder is slidably connected to the installation groove.

[0013] Furthermore, a collection seat is slidably connected inside the barrel, and an installation shell is installed on the outer wall of one side of the collection seat. The installation shell is slidably connected to the barrel, and a handle is installed on the side wall of the installation shell.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this utility model, by setting up a dust removal component, the dust is filtered to prevent residual pesticide dust from overflowing into the outside world, polluting the external environment, and protecting the health of operators; at the same time, the dust removal component can also filter out certain impurities attached to the sample to avoid or reduce interference with the test results.

[0016] 2. In this utility model, the mounting cylinder is detachably connected to the mounting groove of the barrel body to facilitate the disassembly and assembly of the sieve plate, thereby making it easier to select a sieve plate suitable for sample crushing. The installation of the sieve plate is limited by the cooperation of the limiting ring, elastic ring and guide ring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a food pesticide residue detection pretreatment device in this embodiment;

[0018] Figure 2 This is a cross-sectional schematic diagram of the food pesticide residue detection pretreatment device in this embodiment;

[0019] Figure 3 This is a structural view of the dust removal component in this embodiment;

[0020] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0021] Reference numerals in the attached drawings: 1. Barrel body; 2. Barrel lid; 3. Rotating rod; 4. Motor; 5. Blade; 6. Dust removal assembly; 601. Housing; 602. Sealing ring; 603. Air inlet pipe; 604. Baffle; 605. Electromagnet; 606. Rotating frame; 607. Torsion spring; 608. Air outlet pipe; 609. Filter plate; 610. Fan; 611. Magnet; 7. Filter assembly; 701. Mounting groove; 702. Mounting cylinder; 703. Guide ring; 704. Sieve plate; 705. Elastic ring; 706. Limiting ring; 8. Collection seat; 9. Mounting shell; 10. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: A food pesticide residue detection pretreatment device, such as... Figures 1-4 As shown, it includes a barrel body 1 and a barrel lid 2 for sealing the barrel body 1. The barrel body 1 is a cylindrical structure with one end open and the other end closed, and has an inner cavity. The barrel body 1 is equipped with a blade 5 for crushing food samples. The lower surface of the barrel lid 2 is equipped with a dust removal component 6 for cleaning the dust generated during sample crushing. The barrel body 1 is equipped with a filter component 7 that is easy to remove.

[0024] Furthermore, such as Figure 3 and Figure 4As shown, the dust removal assembly 6 includes a housing 601 installed on the lower surface of the barrel cover 2. A sealing ring 602 is installed at the lower end of the housing 601. An air inlet pipe 603 is installed on one side of the housing 601. A baffle 604 is provided inside the air inlet pipe 603. The baffle 604 has a disc-shaped structure. The edge of the baffle 604 abuts against the inner wall of the air inlet pipe 603. A magnet 611 is embedded on one side of the baffle 604. An electromagnet 605 corresponding to the magnet 611 is installed on the inner wall of the air inlet pipe 603. The electromagnet 605 is in contact with the magnet 611. A rotating frame 606 is installed at the lower end of the baffle 604. The rotating frame 606 is rotatably connected to the air inlet pipe 603. A torsion spring 607 is sleeved on the outer side of the rotating frame 606. An air outlet pipe 608 is installed at the other end of the housing 601. A filter plate 609 is installed at one end of the air outlet pipe 608. A fan 610 is installed at the other end of the air outlet pipe 608.

[0025] When energized, electromagnet 605 generates electromagnetic fields, including its iron core and the conductive winding wound around it. When the conductive winding is energized, the iron core is magnetized; when the conductive winding is de-energized, the iron core is demagnetized. Therefore, when the dust removal assembly 6 is not in use, the attraction between magnet 611 and the iron core of electromagnet 605 limits the position of baffle 604, closing the air inlet pipe 603. When the dust removal assembly 6 is in use, electromagnet 605 generates magnetism, and the repulsion between the like poles of electromagnet 605 and magnet 611 causes baffle 604 to rotate, opening the air inlet pipe 603. The rotation of baffle 604 also deforms torsion spring 607. Simultaneously, fan 610 starts, expelling air from inside housing 601 through outlet pipe 608, thus clearing the air inside housing 601. A negative pressure is generated, which draws air from outside the air inlet duct 603 into the air inlet duct 603 and transfers it to the housing 601. The filter plate 609 filters the dust in the air, and the filtered air is discharged out through the air outlet duct 608. This cycle repeats to filter the dust. After the dust removal is completed, the fan 610 is turned off, the electromagnet 605 is de-energized, and the baffle 604 rotates under the action of the torsion spring 607. The magnet 611 and the electromagnet 605 attract each other to limit the baffle 604, thus closing the air inlet duct 603.

[0026] By setting up the dust removal component 6, the filter plate 609 in the dust removal component 6 is used to filter dust, so as to prevent dust with residual pesticides from overflowing into the outside world and polluting the outside environment. At the same time, the filter plate 609 can also filter out some impurities attached to the sample, so as to avoid or reduce interference with the test results.

[0027] The housing 601 is bolted to the lower surface of the lid 2. The sealing ring 602, made of rubber, is installed at the lower end of the housing 601 via an embedded method. The upper surface of the sealing ring 602 fits against the lower end face of the housing 601, preventing air from outside the housing 601 from entering through the gap between the housing 601 and the sealing ring 602. Both the inlet pipe 603 and the outlet pipe 608 are detachably installed on the housing 601. Preferably, a plug-in connection is used. A foolproof design can be incorporated at the connection points between the inlet pipe 603 and the housing 601, and between the outlet pipe 608 and the housing 601, to ensure consistent installation of the inlet pipe 603 and the outlet pipe 608. Simultaneously, the exhaust velocity of the fan 610 is controlled to prevent excessive wind speed from drawing the pulverized sample into the housing 601. Preferably, the dust removal component 6 is turned on simultaneously when the sample is crushed. After the sample is crushed, the dust removal component 6 is turned on for a period of time and then turned off to filter out all or as much dust as possible.

[0028] Furthermore, such as Figure 2 As shown, a rotating rod 3 is rotatably connected to the lid 2. One end of the rotating rod 3 extends outside the lid 2 and is connected to the output end of the motor 4. The other end of the rotating rod 3 extends inside the barrel 1, and multiple blades 5 are installed on the other end of the rotating rod 3. When the sample is being crushed, the motor 4 is turned on, and the motor 4 drives the rotating rod 3 to rotate. The rotating rod 3 drives the blades 5 to rotate, and the blades 5 are used to crush the sample.

[0029] Furthermore, such as Figure 2 As shown, the filter assembly 7 includes a mounting cylinder 702 detachably installed inside the barrel 1. A guide ring 703 is bolted to the lower end of the mounting cylinder 702. An elastic ring 705 is provided above the guide ring 703. The edge of the elastic ring 705 is fixedly connected to the inner wall of the mounting cylinder 702. A sieve plate 704 is provided between the elastic ring 705 and the guide ring 703. The upper and lower surfaces of the sieve plate 704 respectively abut against the elastic ring 705 and the guide ring 703. A limiting ring 706 is provided on the upper surface of the elastic ring 705. The edge of the limiting ring 706 is fixedly connected to the inner wall of the mounting cylinder 702. An mounting groove 701 adapted to the mounting cylinder 702 is opened on the inner wall of the barrel 1. The mounting cylinder 702 is slidably connected to the mounting groove 701.

[0030] The sieve plate 704 is used to screen the pulverized sample; the mounting groove 701 is used to install the mounting cylinder 702. When the mounting cylinder 702 slides down into the mounting groove 701 and is installed inside the mounting groove 701, the guide ring 703 abuts against the bottom of the mounting groove 701; the guide ring 703 and the elastic ring 705 cooperate to limit the sieve plate 704, and the limiting ring 706 limits the elastic ring 705. Preferably, the elastic ring 705 is made of rubber so that it can better fit the sieve plate 704.

[0031] Furthermore, such as Figure 1 and Figure 2 As shown, a collection seat 8 is slidably connected inside the barrel 1. A mounting shell 9 is installed on the outer wall of one side of the collection seat 8. The mounting shell 9 is slidably connected to the barrel 1, and a handle 10 is installed on the side wall of the mounting shell 9. The crushed sample falls into the collection seat 8 through the sieve plate 704. The collection seat 8 can be removed using the handle 10, which facilitates subsequent testing of the crushed sample.

[0032] When using the above-mentioned pretreatment device, first open the barrel lid 2, lift the mounting cylinder 702 upwards and remove it from the mounting groove 701 of the barrel body 1; then, remove the guide ring 703, select a suitable sieve plate 704 and install the sieve plate 704 at the lower end of the elastic ring 705; next, reinstall the guide ring 703, using the guide ring 703 and the elastic ring 705 to limit the sieve plate 704, and different sieve plates 704 perform different levels of screening on the pulverized sample; then, slide the mounting cylinder 702 downwards into the mounting groove 701 to install the mounting cylinder 702; next, use the barrel lid 2 to seal the barrel body 1, start the motor 4, the motor 4 drives the rotating rod 3 to rotate, the rotating rod 3 drives the blade 5 to rotate, and the blade 5 pulverizes the sample. By adjusting the speed of the motor 4, different samples can be pulverized. The pulverized sample falls into the collection seat 8 through the sieve plate 704, and the collection box is removed by the handle 10.

[0033] During sample crushing, the blower 610 is turned on and the electromagnet 605 is energized. The electromagnet 605 generates magnetism, and the repulsion between the like poles of the electromagnet 605 and the magnet 611 causes the baffle 604 to rotate, opening the air inlet pipe 603. The rotation of the baffle 604 also causes the torsion spring 607 to deform. The blower 610 discharges the air inside the housing 601 to the outside through the air outlet pipe 608, creating a negative pressure inside the housing 601. This negative pressure draws air from outside the air inlet pipe 603 into the air inlet pipe 603 and transfers it into the housing 601. The filter plate 609 filters the dust in the air, and the filtered air is discharged to the outside through the air outlet pipe 608. This cycle continues to filter the dust.

[0034] After the pretreatment device is used, it can be disassembled to facilitate cleaning or washing of each component.

[0035] In this embodiment, the motor 4, electromagnet 605, and fan 610 are controlled automatically by a controller. The controller circuit can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. In addition, this embodiment is mainly used to protect the structure, shape and their combination, so the control method and circuit connection will not be explained in detail in this embodiment. The device is powered by a built-in power supply or an external power supply.

[0036] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A food pesticide residue detection pretreatment device, comprising a barrel body (1) and a barrel lid (2) for sealing the barrel body (1), characterized in that, The barrel (1) is equipped with a blade (5) for crushing samples. The lower surface of the barrel cover (2) is equipped with a dust removal assembly (6) for cleaning up dust generated during sample crushing. The barrel (1) is equipped with a filter assembly (7) that is easy to remove. The dust removal assembly (6) includes a housing (601) installed on the lower surface of the barrel cover (2). A sealing ring (602) is installed at the lower end of the housing (601). An air inlet pipe (603) is installed on one side of the housing (601). A baffle (60) is provided inside the air inlet pipe (603). 4) A magnet (611) is embedded on one side of the baffle (604), and an electromagnet (605) corresponding to the magnet (611) is installed on the inner wall of the air inlet pipe (603). The electromagnet (605) is in contact with the magnet (611). A rotating frame (606) is installed at the lower end of the baffle (604). The rotating frame (606) is rotatably connected to the air inlet pipe (603). A torsion spring (607) is sleeved on the outer side of the rotating frame (606). An air outlet pipe (608) is installed on the other side of the housing (601).

2. The food pesticide residue detection pretreatment device according to claim 1, characterized in that, A filter plate (609) is installed at one end of the air outlet pipe (608), and a fan (610) is installed at the other end of the air outlet pipe (608).

3. The food pesticide residue detection pretreatment device according to claim 1, characterized in that, The lid (2) is rotatably connected to a rotating rod (3). One end of the rotating rod (3) extends outside the lid (2) and is connected to the output shaft of the motor (4). The other end of the rotating rod (3) extends inside the barrel body (1). Multiple blades (5) are installed on the other end of the rotating rod (3).

4. The food pesticide residue detection pretreatment device according to claim 1, characterized in that, The filter assembly (7) includes a mounting cylinder (702) detachably installed inside the barrel (1). A guide ring (703) is attached to the lower end of the mounting cylinder (702). An elastic ring (705) is provided above the guide ring (703). The edge of the elastic ring (705) is fixedly connected to the inner wall of the mounting cylinder (702). A sieve plate (704) is provided between the elastic ring (705) and the guide ring (703). The upper and lower surfaces of the sieve plate (704) respectively abut against the elastic ring (705) and the guide ring (703). A limiting ring (706) is provided on the upper surface of the elastic ring (705). The edge of the limiting ring (706) is fixedly connected to the inner wall of the mounting cylinder (702).

5. The food pesticide residue detection pretreatment device according to claim 4, characterized in that, The inner wall of the barrel (1) is provided with an installation groove (701), and the installation cylinder (702) is slidably connected to the installation groove (701).

6. The food pesticide residue detection pretreatment device according to claim 1, characterized in that, The barrel (1) is slidably connected to a collection seat (8). An installation shell (9) is installed on the outer wall of one side of the collection seat (8). The installation shell (9) is slidably connected to the barrel (1). A handle (10) is installed on the side wall of the installation shell (9).

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