Portable lemon pesticide residue detection device

Abstract

The invention belongs to the technical field of food safety detection, and discloses a portable lemon pesticide residue detection device, which comprises a box body, the top of the box body is provided with a folding support plate, the side surface of the box body is detachably connected with a drawer, and the drawer is internally provided with a sample processing assembly, a detection assembly and a plurality of cavities. The detection assembly comprises a detection main body, the top of the detection main body is provided with a display control panel and a detection bin, a constant-temperature heater electrically connected with the display control panel is embedded in the detection bin, a plurality of limiting openings for placing quick test cards are formed in the detection bin, and a bin cover clamped with the detection main body is hinged to the side, away from the display control panel, of the detection bin; the bin cover is provided with a pressing pad corresponding to the limiting opening. The device can realize field instant detection, and is provided with an operation platform, so that lemon samples can be conveniently treated; a plurality of samples can be treated at the same time, and a plurality of samples cannot be detected at the same time in batches.

Description

Technical Field

[0001] This invention relates to the field of food safety testing technology, and more specifically, to a portable lemon pesticide residue detection device. Background Technology

[0002] Pesticide residues refer to the phenomenon where pesticides remain directly or indirectly in grains, vegetables, fruits, livestock products, aquatic products, soil, and water bodies after their application during production. With the development of agricultural industrialization, agricultural production increasingly relies on exogenous substances such as pesticides, antibiotics, and hormones. In my country, the use of pesticides in grains, vegetables, fruits, and tea remains high. The irrational use of these substances inevitably leads to excessive pesticide residues in agricultural products, affecting consumer safety and, in severe cases, causing illness, developmental abnormalities, or even direct poisoning and death.

[0003] Lemons, belonging to the Rutaceae family and the Citrus genus, are evergreen shrubs and small trees, and have become a common condiment and beverage ingredient in daily life. Lemons are susceptible to black spot disease (scarlet scabbing) and pests, requiring the use of organophosphates and pyrethroids for control during cultivation. Furthermore, the fuzzy and porous nature of lemon surfaces easily absorbs pesticide particles, making it difficult to completely remove these residues using conventional rinsing methods. The main pesticide residues in lemons are organophosphates and carbamates, two types of insecticides used in large quantities and with high toxicity. Although there are many methods for pesticide residue testing, most existing methods rely on bulky equipment, which is inconvenient to transport to outdoor environments such as lemon orchards and harvesting sites. Moreover, the instruments are precision instruments, making operation cumbersome and significantly affecting test results after relocation, hindering real-time field testing.

[0004] The principle of the paper disc method is based on the fact that cholinesterase catalyzes the hydrolysis of indophenol acetate (red) into acetic acid and indophenol (blue). Organophosphorus or carbamate pesticides inhibit cholinesterase, altering the catalytic, hydrolysis, and color-changing processes, thus indicating the presence of high doses of organophosphorus or carbamate pesticides in the sample. However, achieving real-time field detection still faces the following problems: lack of an operational platform, inconvenience in processing lemon samples; inability to process multiple samples simultaneously; and inability to simultaneously batch-test multiple samples.

[0005] Therefore, the present invention proposes a portable lemon pesticide residue detection device. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a portable lemon pesticide residue detection device.

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

[0008] A portable lemon pesticide residue detection device includes a housing with a folding support plate installed on the top of the housing and a drawer detachably connected to the side of the housing. The drawer contains a sample processing component, a detection component, and multiple cavities.

[0009] The detection assembly includes a detection body, a display control panel and a detection chamber on the top of the detection body, a constant temperature heater that is electrically connected to the display control panel is embedded in the detection chamber, a plurality of limiting ports for placing rapid test cards are provided in the detection chamber, and a chamber cover that is hinged to the side of the detection chamber away from the display control panel and snapped into the detection body is provided on the chamber cover, which has pressure pads corresponding to the limiting ports.

[0010] Preferably, the sample processing assembly includes a motor fixed to the inner wall of the box, and two swing plates respectively located on both sides of the box and one end of which is rotatably engaged with the box. The output end of the motor is fixed with a toggle plate that is slidably connected to the swing plate, and a clamping assembly is detachably engaged between the two swing plates.

[0011] Preferably, the clamping assembly includes a mounting base that is detachably snapped into the swing plate. Two mounting plates are symmetrically arranged between the two mounting bases. One mounting base is rotatably snapped into a bidirectional threaded rod that penetrates the mounting plate. The other mounting base is provided with a guide rod that penetrates the mounting plate. Multiple arc-shaped locking blocks are provided on opposite sides of the two mounting plates. A sample tube is provided between two corresponding arc-shaped locking blocks.

[0012] Preferably, the sample processing assembly further includes two electrically telescopic rods, the top of which is provided with a second mounting base. The second mounting base is slidably engaged with a sliding plate. A second clamping assembly with the same structure as the first clamping assembly is detachably engaged between the two sliding plates. The sample tube includes a main tube and a matching dropper. The first clamping assembly is used to clamp the dropper, and the second clamping assembly is used to clamp the main tube.

[0013] Preferably, the inner wall of the arc-shaped card block is provided with a buffer pad, and the top of both the dropper and the main tube are provided with a limiting ring. The outer surface of the dropper is threaded with a sealing cap that is sealed and snapped onto the top of the main tube.

[0014] Preferably, the actuating plate is provided with a sliding groove, and an actuating rod that is slidably connected to the sliding slider by a sliding engagement is provided in the sliding groove. The actuating rod is slidably connected to the swing plate, and the swing plate is provided with an arc-shaped limiting groove for the clamping assembly to move.

[0015] Preferably, the top of the clamping component one is detachably connected to a clamping component three with the same structure as the clamping component one, and the clamping component three is used to squeeze the dropper.

[0016] Preferably, an unfolding assembly is provided between the box body and the folding support plate. The folding support plate includes a main board that can completely cover the top of the box body and a folding plate. The unfolding assembly includes a support frame and two sets of connecting brackets. One set of connecting brackets is hinged to the main board and the box body at both ends, and the other set of connecting brackets is hinged to the support frame and the box body at both ends. Each set of connecting brackets includes two sets of connecting rods on both sides of the inner wall of the box body. The connecting rods are composed of two connecting rods forming a parallelogram. A connecting rod is provided between the two sets of connecting rods on the same side. One end of the connecting rod is hinged to the extension end of one of the connecting rods in one set of connecting rods, and one end of the connecting rod is hinged to one of the connecting rods in the other set of connecting rods. The inner wall of the box body is provided with protrusions.

[0017] Preferably, the drawer is located on the side of the box opposite to the unfolding direction of the main board, and the drawer is connected to the main board by a snap-fit.

[0018] Preferably, the outer wall of the box is hinged with two handles, and the handles are provided with anti-slip sleeves in the middle.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention is ingeniously designed for portability. The unfolding component solves the problem of the lack of an operating platform for real-time field testing. The sample processing component can simultaneously extract pesticide residues from multiple samples, add the extracts from multiple samples to the white tablet in the rapid test card at the same time, and also perform batch testing on multiple samples simultaneously. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of a portable lemon pesticide residue detection device in its off state;

[0022] Figure 2 A three-dimensional structural diagram of a portable lemon pesticide residue detection device in its unfolded state;

[0023] Figure 3 A schematic diagram of the internal structure of a drawer in a portable lemon pesticide residue detection device;

[0024] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0025] Figure 5 for Figure 3 Enlarged view of a section at point B in the middle;

[0026] Figure 6 for Figure 3 Enlarged view of a section at point C;

[0027] Figure 7This is a schematic diagram of the sample processing component of a portable lemon pesticide residue detection device.

[0028] The reference numerals in the accompanying drawings include:

[0029] 1. Cabinet; 2. Drawer; 3. Cavity; 4. Detection Body; 5. Display Control Panel; 6. Detection Chamber; 7. Limiting Port; 8. Chamber Cover; 9. Pressure Pad; 10. Motor; 11. Swing Plate; 12. Actuating Plate; 13. Mounting Base One; 14. Mounting Plate; 15. Two-way Threaded Rod; 16. Guide Rod; 17. Arc-shaped Locking Block; 18. Electric Telescopic Rod; 19. Mounting Base Two; 20. Main Pipe; 21. Dropper; 22. Buffer Pad; 23. Limiting Ring; 24. Sealing Cap; 25. Slide Groove; 26. Actuating Rod; 27. Arc-shaped Limiting Groove; 28. Main Board; 29. ​​Folding Plate; 30. Support Frame; 31. Connecting Rod One; 32. Connecting Rod Two; 33. Protrusion; 34. Handle; 35. Anti-slip Sleeve. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0031] Example

[0032] like Figures 1 to 7 As shown, a portable lemon pesticide residue detection device includes a housing 1, with a folding support plate mounted on the top of the housing 1. A drawer 2 is detachably connected to the side of the housing 1. The drawer 2 contains a sample processing component, a detection component, and multiple cavities 3 for placing an electronic scale, a peeler, a rapid test card, a buffer solution, and sample tubes, respectively. The cavities 3 and the detection component are located on opposite sides of the sample processing component.

[0033] It should be noted that the electronic scale, rapid test card, and buffer solution are all existing technologies and will not be described in detail here. The skin harvester is also existing technology and can be a knife, tweezers, or other tools, etc., and will not be described in detail here.

[0034] In use, open the folding support plate, remove drawer 2 and place it on the folding support plate. Use a peeler to remove the peel of the lemon to be tested, weigh it, and place it in a sample tube. Add buffer solution. Place multiple sample tubes in the sample processing assembly, shake, and let stand. Take out multiple rapid test cards and place them in the detection assembly. Add the extract from the sample tubes to the white tablet on the rapid test card, and let it stand for at least 10 minutes for pre-reaction. Then fold the rapid test card in half so that the red tablet and white tablet overlap and react. A positive result is indicated if the white tablet does not change color or turns slightly light blue. A negative result is indicated if the white tablet turns sky blue or is the same as the blank control card.

[0035] The testing assembly includes a testing body 4. The top of the testing body 4 is provided with a display control panel 5 and a testing chamber 6. The battery inside the testing body 4 is electrically connected to the display control panel 5. The testing chamber 6 is equipped with a constant temperature heater (not shown in the figure) that is electrically connected to the display control panel 5. The testing chamber 6 is provided with multiple limiting ports 7 for placing rapid test cards. The side of the testing chamber 6 away from the display control panel 5 is hinged with a chamber cover 8 that is snapped into the testing body 4. The chamber cover 8 is provided with pressure pads 9 corresponding to the limiting ports 7.

[0036] In use, first use the display control panel 5 to turn on the constant temperature heater, so that the temperature inside the detection chamber 6 is maintained at about 37°C. Place the rapid test cards into the limiting ports 7 respectively, with the white tablet end of the rapid test card in contact with the top of the detection chamber 6. After adding the extract, a pre-reaction is carried out first. Then, cover the chamber with the lid 8. The rotating chamber lid 8, through the pressure pad 9, just drives the rapid test card to fold in half, and at the same time, pressure can be applied to make the red tablet and the white tablet tightly overlap, which facilitates the reaction and thus realizes the simultaneous detection of multiple samples.

[0037] It should also be noted that a timer can be installed on the top of the detection body 4 to facilitate timing and reminder of the reaction time. The timer is existing technology and will not be described in detail here. In addition, the detection component can be removed from the drawer 2 for use.

[0038] The sample processing assembly includes a motor 10 fixed to the inner wall of the housing 1, and two swing plates 11 respectively located on both sides of the housing 1 and rotatably engaged with the housing 1 at one end. The output end of the motor 10 is fixed with a toggle plate 12 that is slidably connected to the swing plate 11. A clamping assembly is detachably engaged between the two swing plates 11.

[0039] In use, multiple sample tubes are clamped and fixed using clamping assembly 1. The motor 10 is started, and the rotating motor 10 can drive the actuating plate 12 to rotate. One end of the rotating actuating plate 12 slides inside the swing plate 11, thereby driving the swing plate 11 to swing back and forth, thereby driving the sample tube to swing, and thus realizing the shaking extraction of pesticide residues in the sample tube.

[0040] The clamping assembly includes a mounting base 13 that is detachably snapped into the swing plate 11. Two mounting plates 14 are symmetrically arranged between the two mounting bases 13. One mounting base 13 is rotatably snapped into a bidirectional threaded rod 15 that passes through the mounting plate 14. One end of the bidirectional threaded rod 15 is provided with a knob. The other mounting base 13 is provided with a guide rod 16 that passes through the mounting plate 14. Multiple arc-shaped locking blocks 17 are provided on the opposite sides of the two mounting plates 14. Each arc-shaped locking block 17 is provided with a buffer pad 22. A sample tube is provided between the two corresponding arc-shaped locking blocks 17 between the two mounting plates 14 through the buffer pad 22.

[0041] In use, rotating the knob can drive the bidirectional threaded rod 15 to rotate, which, with the cooperation of the guide rod 16, can drive the two mounting plates 14 to move away from each other, placing the sample tube between the two arc-shaped locking blocks 17, and then rotating the knob to bring the two mounting plates 14 closer together, thereby fixing the sample tube; the buffer pad 22 has a certain elasticity and can also play a role in preventing slippage.

[0042] The sample processing assembly also includes two electrically telescopic rods 18. The top of the electrically telescopic rods 18 is provided with a second mounting base 19. The second mounting base 19 is slidably engaged with a sliding plate. The two sliding plates are detachably engaged with a second clamping assembly, which has the same structure as the first clamping assembly. The sample tube includes a main tube 20 and a matching, engaged dropper 21. The first clamping assembly is used to clamp the dropper 21, and the second clamping assembly is used to clamp the main tube 20. The top of both the dropper 21 and the main tube 20 is provided with a limiting ring 23. The outer surface of the dropper 21 is threaded with a sealing cap 24 that is sealed and engaged with the top of the main tube 20.

[0043] In use, first place multiple mother tubes 20 inside the clamping assembly two. The limiting ring 23 prevents the mother tubes 20 from detaching from the clamping assembly two. After the sample and buffer solution are added, rotate the knob to simultaneously fix the multiple mother tubes 20 in the clamping assembly two. Place multiple droppers 21 inside the clamping assembly one. The limiting ring 23 prevents the droppers 21 from detaching from the clamping assembly two. Rotate the knob to simultaneously fix the multiple droppers 21 in the clamping assembly one. Position the droppers 21 directly above the mother tubes 20. The droppers 21 located below the clamping assembly one are threadedly connected to the sealing cap 24. Activate the electric telescopic rod 18 to extend, allowing the mother tubes 20 to be sealed and engaged with the sealing cap 24. The motor 10 drives the clamping assembly one to slide back and forth in an arc shape, while simultaneously driving the clamping assembly two to slide in an arc shape, thereby achieving the shaking extraction of pesticide residues in the sample inside the mother tubes 20.

[0044] It should be noted that drawer 2 contains another battery to provide power to motor 10 and electric telescopic rod 18. Motor 10 and electric telescopic rod 18 are electrically connected in parallel, and the two electric telescopic rods 18 are electrically connected in series.

[0045] The actuating plate 12 is provided with a sliding groove 25, in which a slider is slidably engaged. The swing plate 11 is slidably connected to an actuating rod 26 that is threadedly connected to the slider. The swing plate 11 is provided with an arc-shaped limiting groove 27 for the clamping assembly to move.

[0046] After sample processing, squeezing the dropper 21 draws the extract from the mother tube 20 into the dropper 21. Activating the electric telescopic rod 18 retracts the dropper 21, detaching it from the mother tube 20. Rotating the actuating rod 26 moves it away from the actuating block, releasing its limiting effect on the slider. The slider slides away from the motor 10. Rotating the actuating rod 26 again causes it to press against the actuating block, limiting the slider's position. The increased rotation radius of the actuating rod 26 allows the swing plate 11 to rotate to its maximum swing position. Due to the arc-shaped limiting groove 27, after the swing stops, the dropper 21 remains perpendicular to the horizontal plane under the influence of the sample tube's gravity, regardless of where the swing plate 11 stops. Furthermore, during the swing, the sample tube is prevented from overturning due to centrifugal force. At this time, the dropper 21 is located directly above the white tablet in the rapid test card on the detection component. Simply squeeze the dropper 21 in sequence to add the extract in the dropper 21 to the white tablet in the rapid test card.

[0047] To enable simultaneous addition of extracts from multiple samples to the white tablet of the rapid test card and improve detection efficiency, a clamping component three with the same structure as clamping component one is detachably connected to the top of clamping component one. Clamping component three is used to squeeze the dropper 21.

[0048] An unfolding assembly is provided between the housing 1 and the folding support plate. The folding support plate includes a main board 28 and a folding plate 29. When the unfolding assembly is folded up, the main board 28 can completely cover the top of the housing 1. The unfolding assembly includes a support frame 30 and two sets of connecting brackets. One set of connecting brackets is hinged at both ends to the main board 28 and the housing 1, respectively. The other set of connecting brackets is hinged at both ends to the support frame 30 and the housing 1, respectively. Each set of connecting brackets includes two sets of connecting rods on both sides of the inner wall of the housing 1. The connecting rods consist of two parallelogram-shaped connecting rods 31. A second connecting rod 32 is provided between the two sets of connecting rods on the same side. One end of the second connecting rod 32 is hinged to the extension end of one of the connecting rods 31 in the first set of connecting rods, and one end of the second connecting rod 32 is hinged to one of the connecting rods 31 in the other set of connecting rods. The inner wall of the housing 1 has a protrusion 33.

[0049] When unfolded, pulling the main board 28 to the right causes it to move outward from the housing 1. This movement is triggered by the connecting rod 32 inside the housing 1, which rotates the connecting rod on the other side. When the main board 28 is in position, the opposite connecting rod support also moves into place. Then, the folding plate 29 is opened, aligning perfectly with the support frame 30, forming a new desktop. In the unfolded state, the connecting rods 31 are all tilted outwards. The four connecting rods 31 closest to the inner wall of the housing 1 abut against the protrusions 33 on the inner wall of the housing 1. At this time, when pressure is applied to the desktop, it can only move outwards. Since the connecting rods 31 abut against the protrusions 33, they can block the outward movement of the connecting rods, thus forming a relatively stable whole.

[0050] Drawer 2 is located on the left side of the box body 1, and drawer 2 is connected to the main board 28 by a snap-fit ​​mechanism. Since the direction in which the main board 28 unfolds is opposite to the direction in which the drawer 2 is pulled out, they mutually restrict each other. In addition, two handles 34 are hinged to the outer wall of the box body 1, and the middle of the handles 34 is provided with an anti-slip sleeve 35 to facilitate lifting and moving the box body 1.

[0051] It should also be noted that since clamping components one, two, and three are all detachable and can be stored inside the housing 1, and the restriction on the swing plate 11 can be released by rotating the lever 26, the swing plate 11 can also be stored inside the housing 1.

[0052] The working principle is as follows:

[0053] The folding support plate can be unfolded using the unfolding assembly to form a relatively stable whole. Drawer 2 is removed and placed on the main board 28 and the folding plate 29. The mother tube 20 is placed in clamping assembly two, and the dropper 21 is placed in clamping assembly one. The lemon peel is taken using a peeler, weighed, and placed in the mother tube 20, with buffer solution added. The mother tube 20 is fixed using clamping assembly two, and the dropper 21 is fixed using clamping assembly one. The electric telescopic rod 18 is used to seal the mother tube 20 against the sealing cap 24. Starting the motor 10 causes the mother tube 20 to swing, thereby extracting pesticide residues from the sample. After extraction, the rapid test strip is placed in the detection chamber 6 to the limiting port 7, and the dropper 21 is detached from the mother tube 20. The slider is moved so that when the swing plate 11 swings to its maximum position, the dropper 21 is directly above the white tablet. The extraction solution from multiple droppers 21 can be simultaneously added to the white tablet using clamping assembly three. Allow the test strip to stand for at least 10 minutes for pre-reaction. Then, cover the test chamber and fold the rapid test card in half to allow the red and white tablets to react. A positive result is indicated by the white tablet remaining unchanged or showing a slight light blue tint. A negative result is indicated by the white tablet turning sky blue or matching the blank control card.

[0054] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A portable lemon pesticide residue detection device, characterized in that, The device includes a housing, the top of which is equipped with a folding support plate, and a drawer that is detachably connected to the side of the housing. The drawer contains a sample processing component, a detection component, and multiple cavities. The detection assembly includes a detection body, a display control panel and a detection chamber on the top of the detection body, a constant temperature heater that is electrically connected to the display control panel is embedded in the detection chamber, a plurality of limiting ports for placing rapid test cards are provided in the detection chamber, and a chamber cover that is hinged to the side of the detection chamber away from the display control panel and snapped into the detection body is provided on the chamber cover, which has pressure pads corresponding to the limiting ports.

2. The portable lemon pesticide residue detection device according to claim 1, characterized in that, The sample processing assembly includes a motor fixed to the inner wall of the box, and two swing plates respectively located on both sides of the box, one end of which is rotatably engaged with the box. The output end of the motor is fixed with a toggle plate that is slidably connected to the swing plate. A clamping assembly is detachably engaged between the two swing plates.

3. The portable lemon pesticide residue detection device according to claim 2, characterized in that, The clamping assembly includes a mounting base that can be detachably snapped into the swing plate. Two mounting plates are symmetrically arranged between the two mounting bases. One mounting base is rotatably snapped into a bidirectional threaded rod that penetrates the mounting plate. The other mounting base is provided with a guide rod that penetrates the mounting plate. Multiple arc-shaped locking blocks are provided on the opposite faces of the two mounting plates. A sample tube is provided between two corresponding arc-shaped locking blocks.

4. The portable lemon pesticide residue detection device according to claim 3, characterized in that, The sample processing assembly also includes two electrically telescopic rods. The top of each electrically telescopic rod is provided with a second mounting base. The two mounting bases are detachably connected to a second clamping assembly with the same structure as the first clamping assembly through a sliding plate. The sample tube includes a main tube and a matching dropper. The first clamping assembly is used to clamp the dropper, and the second clamping assembly is used to clamp the main tube.

5. A portable lemon pesticide residue detection device according to claim 4, characterized in that, The inner wall of the arc-shaped card block is provided with a buffer pad, and the top of the dropper and the main tube are both provided with a limiting ring. The outer surface of the dropper is threaded with a sealing cap that is sealed and snapped onto the top of the main tube.

6. The portable lemon pesticide residue detection device according to claim 5, characterized in that, The actuating plate is provided with a sliding groove, and a sliding rod connected to the sliding rod by a sliding latch is slidably connected to the sliding rod. The actuating rod is slidably connected to the swing plate, and the swing plate is provided with an arc-shaped limiting groove for the clamping assembly to move.

7. A portable lemon pesticide residue detection device according to claim 6, characterized in that, The top of the clamping component one is detachably connected to a clamping component three with the same structure as the clamping component one, and the clamping component three is used to squeeze the dropper.

8. The portable lemon pesticide residue detection device according to claim 1, characterized in that, An unfolding assembly is provided between the box body and the folding support plate. The folding support plate includes a main board that can completely cover the top of the box body and a folding plate. The unfolding assembly includes a support frame and two sets of connecting brackets. One set of connecting brackets is hinged to the main board and the box body at both ends, and the other set of connecting brackets is hinged to the support frame and the box body at both ends. Each set of connecting brackets includes two sets of connecting rods on both sides of the inner wall of the box body. The connecting rods are composed of two connecting rods forming a parallelogram. A connecting rod is provided between the two sets of connecting rods on the same side. One end of the connecting rod is hinged to the extension end of one of the connecting rods in one set of connecting rods, and one end of the connecting rod is hinged to one of the connecting rods in the other set of connecting rods. The inner wall of the box body is provided with protrusions.

9. A portable lemon pesticide residue detection device according to claim 8, characterized in that, The drawer is located on the side of the box opposite to the unfolding direction of the main board, and the drawer is connected to the main board by a snap-fit.

10. A portable lemon pesticide residue detection device according to claim 1, characterized in that, The outer wall of the box is hinged with two handles, and the middle of the handles is provided with an anti-slip sleeve.

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