Rapid detection device for pesticide residues in fruits and vegetables

Abstract

The invention discloses a device for rapidly detecting pesticide residues in fruits and vegetables. The device comprises a fixed plate, a rotating plate, a movable frame plate, an insertion plate, a detection tube, a detection sensor, a switching plate, an adjusting plate and a blocking plate, after the rotating plate is continuously rotated to insert the insertion plate into the fruits and vegetables, the detection pipe firstly penetrates out of the insertion plate and is inserted into the fruits and vegetables for detection, then is recycled into the insertion plate, and is inserted into the assembly in an upward moving manner along with the movable frame plate and the insertion plate; the switching assembly is used for enabling the detection tube to be quickly inserted downwards after the rotating plate is in contact with one switching plate and then driving the detection tube to be quickly reset upwards after the rotating plate is in contact with the other switching plate; the detection of the pesticide residues in the fruits and vegetables is completed by inserting the insertion plate into the fruits and vegetables and then driving the detection pipe to quickly move downwards by a second U-shaped plate, and in the mode, the situation that the detection sensor is in contact with excessive fruits and vegetables in the process of inserting the detection sensor into the fruits and vegetables is avoided, and the pesticide residues in the fruits and vegetables are detected. The detection on pesticide residues in the fruits and vegetables is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of fruit and vegetable detection structures, in particular to a rapid detection device for pesticide residues in fruits and vegetables. Background Art

[0002] With the continuous advancement of cultivation technology, the growing period of fruits and vegetables has become shorter and shorter. With the aggravation of environmental pollution, the corresponding diseases and insect pests are becoming more and more serious. Most fruits and vegetables need to be sprayed with pesticides for many times before they can mature and be put on the market, resulting in different degrees of pesticide contamination in the grown fruits and vegetables. After the fruits and vegetables are mature, the pesticides on them are generally removed and then tested for pesticide residues. Only when the pesticide residues in fruits and vegetables meet the standards for human consumption can they enter the market and be on the dining table.

[0003] Existing devices for detecting pesticide residues in fruits and vegetables generally detect the fruits and vegetables by crushing, squeezing, extracting, and then detecting them. This method is time-consuming and labor-intensive. For markets with large fruit and vegetable supplies, this device is not convenient enough. In addition, this device generally detects pesticide residues on the outside of fruits and vegetables, but it is difficult to detect pesticide residues inside fruits and vegetables. Pesticide residues on the outer surface of fruits and vegetables are easy to wash off, while pesticide residues inside fruits and vegetables are difficult to wash off. Therefore, it is more necessary to detect pesticide residues inside fruits and vegetables.

[0004] To this end, we propose a rapid detection device for pesticide residues in fruits and vegetables. Summary of the invention

[0005] The purpose of the present invention is to provide a rapid detection device for pesticide residues in fruits and vegetables to solve the problems raised in the above background technology.

[0006] A rapid detection device for pesticide residues in fruits and vegetables comprises a fixed plate, a rotating plate is self-rotating on the fixed plate, a movable frame plate slidably matched with the rotating plate is slidably matched on the fixed plate, a plug plate inserted into the fruits and vegetables is fixedly connected at the bottom of the movable frame plate, a detection tube is movably penetrated inside the plug plate, a detection sensor is provided at the bottom of the detection tube, two switching plates rotatably matched with the rotating plate are connected to the plug plate, an adjustment plate fixedly connected to the switching plate is rotatably connected inside the plug plate, and a blocking plate is provided at the bottom of the adjustment plate; an insertion component is used to make the insertion component cooperate with the movable frame plate by continuously rotating the rotating plate to make the After the plug plate is inserted into the fruits and vegetables and keeps the position, the detection tube passes through the plug plate and penetrates into the fruits and vegetables for detection. After the detection is completed, the detection tube is recovered and enters the plug plate, and moves upward with the movable frame plate and the plug plate; a switching component, the switching component is used for the sealing plate to rotate after the rotating plate contacts one of the switching plates, so that the detection tube can be quickly inserted downward, and then after the rotating plate contacts the other switching plate, it drives the detection tube to quickly reset upward and causes the rotating plate to rotate and seal; a piercing component, the piercing component allows the detection tube to quickly pass through the plug plate.

[0007] Preferably, the insertion component includes a motor connected and fixed to the fixed plate, the output shaft of the motor is connected and fixed to the rotating plate, the end of the rotating plate is fixedly connected to a sliding shaft that slides with the movable frame plate, and the sliding shaft is fixedly connected to a semicircular pressure plate that cooperates with the switching plate. The movable frame plate has an arc section in the middle and horizontal sections at both ends, and the radius of the arc section in the middle of the movable frame plate is consistent with the length of the rotating plate.

[0008] Preferably, the fixed plate is fixedly connected to a first limit plate that slides with both ends of the movable frame plate, and the fixed plate is also fixedly connected to a second limit plate. Limit grooves that slide with the second limit plate are provided on both sides of the plug plate, and the first limit plate and the second limit plate are both L-shaped.

[0009] Preferably, the switching assembly includes a rotating shaft rotating in the plug plate, the rotating shaft is simultaneously connected and fixed to the two switching plates and the adjusting plate, a pressure plate that presses against the pressure plate is fixedly connected to the top of the switching plate, a stabilizing plate with a pointed shape is also fixedly connected to the adjusting plate, a telescopic rod with a first compression member inside is fixedly connected to the inside of the plug plate, the telescopic rod presses against the stabilizing plate, the adjusting plate is obliquely distributed, a channel that moves with the detection tube is penetrated by the plug plate, the blocking plate cooperates with the channel, and a blocking column that cooperates with the switching plate is also fixedly connected to the plug plate.

[0010] Preferably, the piercing assembly includes a first U-shaped plate fixedly connected inside the plug plate, a second U-shaped plate slidably fitted on the first U-shaped plate, the detection tube passes through the first U-shaped plate and the second U-shaped plate, a movable plate located inside the second U-shaped plate is fixedly connected to the detection tube, a compression spring is hung between the movable plate and the second U-shaped plate, and the compression spring is movably wound around the outer surface of the detection tube.

[0011] Preferably, the insertion assembly further comprises a pressure column located in the middle of the first U-shaped plate, the pressure column passes through the first U-shaped plate through a second compression member, and an inclined surface is provided at the end of the second U-shaped plate, and the inclined surface is pressed and matched with the pressure column.

[0012] Preferably, the switching assembly further comprises a first wedge block and a second wedge block connected and fixed to the second U-shaped plate, the first wedge block is pressed and fitted with the stabilizing plate, and a switching column is fixedly connected to the adjustment plate and is pressed and fitted with the second wedge block.

[0013] Preferably, the fixed plate is also provided with a cleaning box for an external water source and air pressure device, the cleaning box is provided with a telescopic hose connected to the channel, the end of the telescopic hose is connected to the detection tube through the channel, and the plug plate is also provided with a drain hole connected to the channel.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By rotating the rotating plate, the plug plate is inserted downward into the fruits and vegetables, and the plug plate maintains this state, and then the pressure plate contacts a pressure plate, and the stabilizing plate on the adjustment plate acts on the second U-shaped plate located above. Under the action of the compression spring and the movable plate, the second U-shaped plate drives the detection tube to move downward quickly, so that the detection tube and the detection sensor pass through the channel out of the plug plate and enter the fruits and vegetables, thereby completing the detection of pesticide residues in the fruits and vegetables. In this way, it is avoided that the detection sensor contacts too many fruits and vegetables during the process of being inserted into the fruits and vegetables, which affects the detection of pesticide residues in the fruits and vegetables.

[0016] 2. The rotating plate continues to rotate, and the pressure plate contacts another pressure plate, so that the switching plate and the adjusting plate rotate. The adjusting plate acts on the second U-shaped plate below, so that the second U-shaped plate and the detection tube quickly move upward and reset, and the detection tube is recovered and enters the plug plate. Finally, the plug plate moves upward and away from fruits and vegetables, which is convenient for the detection of pesticide residues in the next group of fruits and vegetables. The operation is simple, convenient and fast.

[0017] 3. Before the detection tube is inserted downward, the blocking plate rotates to make way for the passage to ensure that the detection tube moves downward. Before the detection tube is retracted upward, the blocking plate rotates to block the passage to prevent excess fruits and vegetables from affecting the detection results. In addition, in this solution, the detection tube can be inserted quickly and over a large distance, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a rear view schematic diagram of the overall structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the split structure of the fixed plate and the rotating plate of the present invention;

[0021] Figure 4 It is a schematic diagram of the split structure of the movable frame plate and the rotating plate of the present invention;

[0022] Figure 5 This is a schematic diagram of the split structure of the detection tube and the plug plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the matching structure of the pressure plate and the switching plate of the present invention;

[0024] Figure 7 It is a schematic diagram of the matching structure of the rotating plate and the second U-shaped plate of the present invention;

[0025] Figure 8 for Figure 7 Rear view of the middle structure;

[0026] Fig. 9 It is a schematic diagram of the split structure of the first U-shaped plate and the second U-shaped plate of the present invention;

[0027] Fig.10 It is a schematic diagram of the split structure of the detection tube and the second U-shaped plate of the present invention;

[0028] Fig.11 It is a schematic diagram of the matching structure of the adjustment plate and the second U-shaped plate of the present invention;

[0029] Fig.12 It is a schematic side view of the matching structure of the adjustment plate and the second U-shaped plate of the present invention;

[0030] Fig.13 for Figure 7 Schematic diagram of the cross-section of the bottom structure of the middle detection tube.

[0031] In the figure: 1-fixed plate, 2-rotating plate, 3-movable frame plate, 4-insertion plate, 5-detection tube, 6-detection sensor, 7-switching plate, 8-adjusting plate, 9-blocking plate, 10-motor, 11-sliding shaft, 12-pressure plate, 13-first limit plate, 14-second limit plate, 15-limiting groove, 16-rotating shaft, 17-pressure plate, 18-stabilizing plate, 19-telescopic rod, 20-blocking column, 21-first U-shaped plate, 22-second U-shaped plate, 23-movable plate, 24-compression spring, 25-pressure column, 26-inclined surface, 27-first wedge block, 28-second wedge block, 29-switching column, 30-cleaning box, 31-telescopic hose, 32-drain hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] See also Figure 1-Figure 13 The present invention provides a rapid detection device for pesticide residues in fruits and vegetables, comprising a fixed plate 1, a rotating plate 2 is self-rotating on the fixed plate 1, a movable frame plate 3 is slidably matched with the rotating plate 2 on the fixed plate 1, a plug plate 4 inserted into the fruits and vegetables is fixedly connected at the bottom of the movable frame plate 3, a detection tube 5 is movably penetrated inside the plug plate 4, a detection sensor 6 is arranged at the bottom of the detection tube 5, two switching plates 7 which are switchably matched with the rotating plate 2 are rotatably connected to the plug plate 4, an adjustment plate 8 which is connected and fixed to the switching plate 7 is rotatably connected inside the plug plate 4, and a blocking plate 9 is arranged at the bottom of the adjustment plate 8; an insertion component, the insertion component is inserted into the fruit and vegetable by continuous rotation After the rotating plate 2 cooperates with the movable frame plate 3 to insert the plug plate 4 into the fruits and vegetables, and keeps the plug plate 4 in this position, the detection tube 5 passes through the plug plate 4 and penetrates into the fruits and vegetables for detection. After the detection is completed, the detection tube 5 is recovered and enters the plug plate 4, and moves upward with the movable frame plate 3 and the plug plate 4; the switching component, the switching component is used for the rotating plate 2 to contact a switching plate 7, and the blocking plate 9 rotates to facilitate the detection tube 5 to quickly penetrate downward, and then after the rotating plate 2 contacts another switching plate 7, it drives the detection tube 5 to quickly reset upward, and makes the rotating plate 2 rotate and block; the piercing component, the piercing component allows the detection tube 5 to quickly pass through the plug plate 4.

[0035] The insertion component includes a motor 10 connected and fixed to a fixed plate 1, an output shaft of the motor 10 is connected and fixed to a rotating plate 2, an end of the rotating plate 2 is fixedly connected to a sliding shaft 11 that slides with a movable frame plate 3, a semicircular pressure plate 12 that cooperates with a switching plate 7 is fixedly connected to the sliding shaft 11, the movable frame plate 3 is an arc section in the middle, and horizontal sections at both ends, and the radius of the arc section in the middle of the movable frame plate 3 is consistent with the length of the rotating plate 2.

[0036] A first limiting plate 13 is fixedly connected to the fixed plate 1 and slidably cooperates with the two ends of the movable frame plate 3. A second limiting plate 14 is also fixedly connected to the fixed plate 1. Limiting grooves 15 that slidably cooperate with the second limiting plate 14 are provided on both sides of the plug plate 4. The first limiting plate 13 and the second limiting plate 14 are both L-shaped.

[0037] The switching assembly includes a rotating shaft 16 that rotates in the plug plate 4. The rotating shaft 16 is connected and fixed to the two switching plates 7 and the adjustment plate 8 at the same time. A pressure plate 17 that presses against the pressure plate 12 is fixedly connected to the top of the switching plate 7. A sharp-angled stabilizing plate 18 is also fixedly connected to the adjustment plate 8. A telescopic rod 19 with a first compression member inside is fixedly connected to the inside of the plug plate 4. The telescopic rod 19 presses against the stabilizing plate 18. The adjustment plate 8 is distributed obliquely. A channel that moves with the detection tube 5 is provided through the plug plate 4. The blocking plate 9 cooperates with the channel. A blocking column 20 that cooperates with the switching plate 7 is also fixedly connected to the plug plate 4.

[0038] The piercing component includes a first U-shaped plate 21 connected and fixed in the plug plate 4, a second U-shaped plate 22 is slidably matched on the first U-shaped plate 21, the detection tube 5 passes through the first U-shaped plate 21 and the second U-shaped plate 22, a movable plate 23 located in the second U-shaped plate 22 is fixedly connected to the detection tube 5, a compression spring 24 is hung between the movable plate 23 and the second U-shaped plate 22, the compression spring 24 is movably wound on the outer surface of the detection tube 5, the piercing component also includes a pressure column 25 located in the middle of the first U-shaped plate 21, the pressure column 25 passes through the first U-shaped plate 21 through the second compression member, and an inclined surface 26 is provided at the end of the second U-shaped plate 22, and the inclined surface 26 is pressed against the pressure column 25.

[0039] In this embodiment, the specific detection method is as follows: hold the fixed plate 1, make the end of the plug plate 4 contact the fruits and vegetables, then start the motor 10, insert the plug plate 4 downward into the fruits and vegetables, and keep the plug plate 4 in this state (at this time, the sliding shaft 11 is located in the arc section of the movable frame plate 3), and then the pressing plate 12 contacts a pressing plate 17, so that the switching plate 7 and the adjustment plate 8 rotate (the blocking plate 9 rotates to keep the channel unblocked), and the stabilizing plate 18 on the adjustment plate 8 acts on the second U-shaped plate 22 located above, and under the action of the compression spring 24 and the movable plate 23, the second U-shaped plate 22 drives the detection tube 5 to move downward quickly, so that the detection tube 5 and the detection sensor 6 pass through the channel out of the plug plate 4 and enter the fruits and vegetables, thereby completing the detection of pesticide residues in the fruits and vegetables. In this way, it is avoided that the detection sensor 6 contacts too many fruits and vegetables during the process of being inserted into the fruits and vegetables, which affects the detection of pesticide residues in the fruits and vegetables;

[0040] The rotating plate 2 continues to rotate (at this time, the sliding shaft 11 is still located in the arc section of the movable frame plate 3), and the pressing plate 12 contacts another pressing plate 17, so that the switching plate 7 and the adjusting plate 8 rotate, and the adjusting plate 8 acts on the second U-shaped plate 22 located below, so that the second U-shaped plate 22 and the detection tube 5 quickly move upward and reset, and the detection tube 5 is recovered into the plug plate 4, and the blocking plate 9 rotates to block the channel;

[0041] Finally, the rotating plate 2 continues to rotate, driving the movable frame plate 3 and the plug plate 4 to move upward (at this time, the sliding shaft 11 is located at the horizontal section of the movable frame plate 3), thereby driving the plug plate 4 to separate from the fruits and vegetables, and conducting internal pesticide residue detection for the next group of fruits and vegetables.

[0042] The working principle of the moving track of the movable frame plate 3 is as follows: the motor 10 drives the rotating plate 2 to rotate slowly and continuously, and the sliding shaft 11 and the pressing plate 12 make circular motions. When the sliding shaft 11 is located in the horizontal section on the left side of the movable frame plate 3, the movable frame plate 3 is driven to move downward along the first limiting plate 13, thereby driving the inserting plate 4 to move downward synchronously along the second limiting plate 14, so that the inserting plate 4 is inserted into the fruits and vegetables;

[0043] When the sliding shaft 11 enters the arc segment of the movable frame plate 3 and rotates in the arc segment, the movable frame plate 3 and the plug plate 4 both maintain this position during this process (in this process, the downward movement detection and upward recovery and reset of the detection tube 5 are completed);

[0044] Finally, when the sliding shaft 11 enters the horizontal section of the movable frame plate 3, it drives the movable frame plate 3 and the inserting plate 4 to move upward, so that the inserting plate 4 is separated from the inside of the fruits and vegetables.

[0045] The working principle of the pressure plate 12 switching the adjustment plate 8 is as follows: the pressure plate 12 makes a circular motion with the rotating plate 2 (at this time the movable frame plate 3 and the plug plate 4 remain in this position), the pressure plate 12 first contacts the pressure plate 17 on the left side, causing the pressure plate 17 to move away from the movable frame plate 3, the two switching plates 7 rotate to the left, and the bottom of the adjustment plate 8 rotates to the right (driving the blocking plate 9 to rotate, thereby releasing the blockage of the channel), the stabilizing plate 18 on the adjustment plate 8 moves synchronously, and one side of the stabilizing plate 18 inclined at a sharp angle has a telescopic rod 19 with a first compression member inside, and cooperates with the blocking column 20 to limit the other pressure plate 12, so that the pressure plate 17 on the left side remains away from the movable frame plate 3. In this process, the stabilizing plate 18 acts on the second U-shaped plate 22 located above, causing the second U-shaped plate 22 to move downward;

[0046] The pressure plate 12 that continues to make circular motion contacts the pressure plate 12 on the right side, causing the pressure plate 17 to move away from the movable frame plate 3. The two switching plates 7 rotate to the right, and the bottom of the pressure plate 12 rotates to the left (driving the blocking plate 9 to rotate and block the channel). The stabilizing plate 18 on the adjusting plate 8 moves synchronously, and the telescopic rod 19 presses the other side of the stabilizing plate 18, cooperating with another blocking column 20 to keep the pressure plate 12 on the right away from the movable frame plate 3. During the magnetic process, the adjusting plate 8 acts on the second U-shaped plate 22 located below to move the second U-shaped plate 22 upward.

[0047] The working principle of the second U-shaped plate 22 and the detection tube 5 moving up and down quickly: when the rotating pressing plate 12 acts on the pressing plate 17 on the left, the adjusting plate 8 rotates to give the second U-shaped plate 22 a downward force, and the second U-shaped plate 22 presses the movable plate 23, thereby overcoming the effect of the compression spring 24, so that the second U-shaped plate 22 drives the detection tube 5 to move downward quickly. When the second U-shaped plate 22 moves to the bottom, the inclined surface 26 located above cooperates with the pressing column 25 to keep the second U-shaped plate 22 in the state of being located at the bottom (the detection tube 5 passes through the plug plate 4;

[0048] When the rotating pressure plate 17 is located on the right side, the adjustment plate 8 rotates to give an upward force to the second U-shaped plate 22, and the second U-shaped plate 22 drives the detection tube 5 to move upward quickly. The inclined surface 26 located below cooperates with the pressure column 25 to keep the second U-shaped plate 22 in the upper state (the detection tube 5 is recovered and enters the plug plate 4).

[0049] Embodiment 2

[0050] The switching assembly also includes a first wedge block 27 and a second wedge block 28 connected and fixed to the second U-shaped plate 22. The first wedge block 27 is pressed and matched with the stabilizing plate 18. A switching column 29 is fixedly connected to the adjustment plate 8 and is pressed and matched with the second wedge block 28.

[0051] In this embodiment, the trigger force on the second U-shaped plate 22 to move up and down is: when the pressing plate 12 acts on the pressing plate 17 on the left, the adjusting plate 8 rotates to drive the stabilizing plate 18 to rotate to the right synchronously, and the stabilizing plate 18 contacts the first wedge block 27 on the second U-shaped plate 22 located above, thereby giving the second U-shaped plate 22 a downward force, overcoming the effect of the compression spring 24, and cooperating with the effect of the compression spring 24, so that the second U-shaped plate 22 and the detection tube 5 move downward quickly;

[0052] When the pressure plate 12 acts on the pressure disc 17 on the right side, the adjustment plate 8 drives the switching column 29 to rotate, and the switching column 29 first contacts the second wedge block 28, thereby giving the second U-shaped plate 22 an upward force, overcoming the effect of the compression spring 24, and cooperating with the effect of the compression spring 24, so that the second U-shaped plate 22 and the detection tube 5 move upward quickly.

[0053] It is worth noting that: when the blocking plate 9 is reset to block the channel, the second U-shaped plate 22 and the detection tube 5 are retracted and reset upward in advance to avoid contact between the blocking plate 9 and the detection tube 5 .

[0054] Embodiment 3

[0055] The fixing plate 1 is also provided with a cleaning box 30 for connecting an external water source and an air pressure device. The cleaning box 30 is provided with a telescopic hose 31 connected to the channel. The end of the telescopic hose 31 is connected to the detection tube 5 through the channel. The plug plate 4 is also provided with a drain hole 32 connected to the channel.

[0056] In this embodiment, when the detection tube 5 is recovered into the channel and before the next group of fruits and vegetables are tested for pesticide residues, water in the cleaning box 30 enters the telescopic hose 31 to flush the channel and the detection tube 5 (the detection tube 5 is a hollow tube, and a through groove is provided on the outer surface, the detection tube 5 and the detection sensor 6 are fixedly connected, and a gap is retained between the two) and the detection sensor 6 (the detection sensor 6 is connected to the signal of the computing and analyzing equipment) located in the channel, and water is allowed to flow out through the drain hole 32 (for the residual water in the channel, the entire device can be used so that the drain hole 32 is located at the bottom to discharge the residual water in the channel).

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid detection device for pesticide residues in fruits and vegetables, characterized in that: include: A fixed plate (1), wherein a rotating plate (2) is self-rotating on the fixed plate (1), and a movable frame plate (3) is slidably matched with the rotating plate (2) on the fixed plate (1), and a plug plate (4) inserted into fruits and vegetables is fixedly connected to the bottom of the movable frame plate (3), and a detection tube (5) is movably penetrated inside the plug plate (4), and a detection sensor (6) is provided at the bottom of the detection tube (5), and two switching plates (7) that switch and match with the rotating plate (2) are rotatably connected to the plug plate (4), and an adjustment plate (8) that is fixedly connected to the switching plate (7) is rotatably connected inside the plug plate (4), and a blocking plate (9) is provided at the bottom of the adjustment plate (8); An insertion component, wherein the insertion component continuously rotates the rotating plate (2) to cooperate with the movable frame plate (3) so that the plug plate (4) is inserted into the inside of the fruit or vegetable, and the plug plate (4) is kept in this position, and then the detection tube (5) passes through the plug plate (4) and penetrates into the inside of the fruit or vegetable for detection. After the detection is completed, the detection tube (5) is recovered and enters the plug plate (4), and moves upward along with the movable frame plate (3) and the plug plate (4); A switching assembly, wherein after the rotating plate (2) contacts one of the switching plates (7), the blocking plate (9) rotates, so that the detection tube (5) can be quickly inserted downwards, and then after the rotating plate (2) contacts another of the switching plates (7), the detection tube (5) is driven to quickly return upwards, and the rotating plate (2) is rotated to block; A piercing assembly is provided, wherein the piercing assembly enables the detection tube (5) to quickly pass through the plug plate (4).

2. The rapid detection device for pesticide residues in fruits and vegetables according to claim 1, characterized in that: The insertion component comprises a motor (10) connected and fixed to the fixed plate (1), the output shaft of the motor (10) being connected and fixed to the rotating plate (2), the end of the rotating plate (2) being fixedly connected to a sliding shaft (11) which is slidably matched with the movable frame plate (3), the sliding shaft (11) being fixedly connected to a semicircular pressure plate (12) which is matched with the switching plate (7), the middle part of the movable frame plate (3) being an arc section, and the two ends being horizontal sections, the radius of the arc section in the middle part of the movable frame plate (3) being consistent with the length of the rotating plate (2).

3. The rapid detection device for pesticide residues in fruits and vegetables according to claim 2, characterized in that: The fixed plate (1) is fixedly connected to a first limit plate (13) which is slidably matched with the two ends of the movable frame plate (3), and the fixed plate (1) is also fixedly connected to a second limit plate (14). Limit grooves (15) which are slidably matched with the second limit plate (14) are formed on both sides of the plug plate (4), and the first limit plate (13) and the second limit plate (14) are both L-shaped.

4. The rapid detection device for pesticide residues in fruits and vegetables according to claim 3, characterized in that: The switching assembly comprises a rotating shaft (16) which rotates in the plug plate (4), the rotating shaft (16) being connected and fixed to the two switching plates (7) and the adjusting plate (8) at the same time, a pressure plate (17) which is pressed and matched with the pressure plate (12) is fixedly connected to the top of the switching plate (7), a stabilizing plate (18) in a pointed shape is also fixedly connected to the adjusting plate (8), a telescopic rod (19) with a first compression member inside is fixedly connected to the plug plate (4), the telescopic rod (19) is pressed and matched with the stabilizing plate (18), the adjusting plate (8) is distributed in an inclined manner, a channel which is movable with the detection tube (5) is provided through the plug plate (4), the blocking plate (9) is matched with the channel, and a blocking column (20) which is matched with the switching plate (7) is also fixedly connected to the plug plate (4).

5. The rapid detection device for pesticide residues in fruits and vegetables according to claim 4, characterized in that: The insertion assembly comprises a first U-shaped plate (21) connected and fixed inside the plug plate (4); a second U-shaped plate (22) is slidably matched on the first U-shaped plate (21); the detection tube (5) passes through the first U-shaped plate (21) and the second U-shaped plate (22); a movable plate (23) located inside the second U-shaped plate (22) is fixedly connected to the detection tube (5); a compression spring (24) is hung between the movable plate (23) and the second U-shaped plate (22); the compression spring (24) is movably wound around the outer surface of the detection tube (5).

6. The rapid detection device for pesticide residues in fruits and vegetables according to claim 5, characterized in that: The insertion assembly further comprises a pressing column (25) located in the middle of the first U-shaped plate (21), the pressing column (25) passing through the first U-shaped plate (21) through a second compression member, and an inclined surface (26) is provided at the end of the second U-shaped plate (22), and the inclined surface (26) is pressed and matched with the pressing column (25).

7. The rapid detection device for pesticide residues in fruits and vegetables according to claim 6, characterized in that: The switching assembly further comprises a first wedge block (27) and a second wedge block (28) connected and fixed to the second U-shaped plate (22); the first wedge block (27) is pressed and matched with the stabilizing plate (18); and a switching column (29) is fixedly connected to the adjusting plate (8) and is pressed and matched with the second wedge block (28).

8. The rapid detection device for pesticide residues in fruits and vegetables according to claim 1, characterized in that: The fixing plate (1) is also provided with a cleaning box (30) for connecting an external water source and an air pressure device. The cleaning box (30) is provided with a telescopic hose (31) connected to the channel. The end of the telescopic hose (31) is connected to the detection tube (5) through the channel. The plug plate (4) is also provided with a drain hole (32) connected to the channel.

Images