A device for detecting heavy metal residues in freshwater products

Abstract

The present application relates to heavy metal residue detection technical field, propose a kind of freshwater product heavy metal residue detection device, including fixed base, sampling assembly, processing component and detection component, the sampling assembly includes the conveyor belt being installed in the top of the fixed base, driving motor is installed in the inside of the conveyor belt, the output end of the driving motor is fixedly connected with the driving shaft of coaxial arrangement through shaft coupling, the inside of the conveyor belt is provided with driving wheel, the driving wheel is sleeved on the outer surface of the driving shaft, the outer surface of the driving shaft is fixedly sleeved with runner, through the setting of sampling assembly and the like structure, through the cooperation of conveyor belt and sampler, the automatic, continuous sampling process is realized, sampling efficiency is improved, the cleaning mechanism of conveyor belt surface, through the synergies of convex column, limiting block, cleaning brush and the like components, effectively reduce residue, avoid cross contamination, guarantee the accuracy of detection result.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heavy metal residue detection, in particular to a freshwater product heavy metal residue detection device. BACKGROUND

[0002] At present, with the acceleration of industrialization, water pollution problems are becoming increasingly serious, among which heavy metal pollution is particularly prominent. Heavy metals such as lead, mercury, cadmium and chromium have characteristics of high toxicity, difficult degradation and easy accumulation in organisms, which pose a serious threat to the environment and human health. Freshwater products, as an important part of people's daily diet, have attracted much attention due to their heavy metal residue problems.

[0003] The prior art authorized and announced as CN 216646452 U is named as a food heavy metal residue detection device, which belongs to the technical field of food detection. The food heavy metal residue detection device comprises a workbench and a detection instrument. An installation plate is arranged at the upper end of the workbench. A sampling seat is fixedly connected to the upper end of the installation plate. A liquid storage cavity, a sampling groove and a transmission cavity are respectively formed in the sampling seat. A plurality of screening holes are formed in the inner wall of the sampling groove and are connected with the liquid storage cavity.

[0004] Although the patent sets up a structure to squeeze the pulp to separate the pulp and juice, but when facing the heavy metal residue detection of freshwater products, especially fish, because the heavy metals in fish mainly accumulate in the head and internal organs, the heavy metals in the fish body cannot be effectively released by squeezing, and there is a problem of inaccurate detection effect.

[0005] In addition, the device needs to be cleaned manually after each use, and cannot continuously sample and detect, so there is a problem of low detection efficiency. SUMMARY

[0006] The present application provides a freshwater product heavy metal residue detection device, which solves the problems of poor accuracy and low detection efficiency in the related art.

[0007] The technical scheme of the present application is as follows: To achieve the above-mentioned purpose, the present application provides the following technical scheme: a freshwater product heavy metal residue detection device, comprising a fixed base, a sampling assembly, a processing assembly and a detection assembly.

[0008] The sampling assembly comprises a conveying belt mounted on the top of the fixed base, a driving motor is mounted in the conveying belt, a driving shaft is coaxially arranged and fixedly connected to the output end of the driving motor through a shaft coupling, a driving wheel is arranged in the conveying belt, the driving wheel is sleeved on the outer circumference of the driving shaft, a rotating wheel is fixedly sleeved on the outer circumference of the driving shaft, a protruding column is fixedly connected to one side of the rotating wheel, a driving shaft and a driven shaft are rotatably mounted in the conveying belt, a driving gear is fixedly sleeved on the outer circumference of the driving shaft, a driven gear is fixedly sleeved on the outer circumference of the driven shaft, the driving gear and the driven gear are meshedly connected, a limiting block is fixedly sleeved on the outer circumference of the driving shaft, a limiting groove is formed in the limiting block, the protruding column is slidably connected in the limiting groove, and cleaning brushes are sleeved on the outer circumferences of the driving shaft and the driven shaft.

[0009] The processing assembly comprises two symmetrical fixed supports fixedly connected to the top of the fixed base, a grinding barrel is fixedly connected between the two fixed supports, a grinding motor is mounted on the top of the grinding barrel, a pulverizing shaft is coaxially arranged and fixedly connected to the output end of the grinding motor through a shaft coupling, a plurality of symmetrical pulverizing blades are fixedly sleeved on the outer circumference of the pulverizing shaft, and an opening and closing mechanism is mounted on the bottom of the grinding barrel.

[0010] The detection assembly comprises an annular placement disc rotatably mounted on the top of the fixed base, a servo motor is arranged on the bottom of the annular placement disc, the output end of the servo motor is fixedly connected in the annular placement disc through a shaft coupling, a plurality of placement racks are fixedly connected in an annular array on the top of the annular placement disc, and a detection cup is arranged in each placement rack.

[0011] Preferably, the sampling assembly further comprises two symmetrical vertical columns fixedly connected to the top of the fixed base, a horizontal sliding rail one is mounted between the two vertical columns, a vertical sliding rail one is mounted on one side of the movable end of the horizontal sliding rail one, and a sampler is mounted on the movable end of the vertical sliding rail one, so that the sampler can move along the direction of the conveying belt, and the material on the top of the conveying belt can be sampled.

[0012] Preferably, the grinding barrel is provided with a water delivery pipe, a plurality of water outlets are arranged in an annular array and uniformly distributed on the bottom of the water delivery pipe, and the water outlets are arranged in the grinding barrel.

[0013] The grinding barrel is respectively provided with an inlet and an outlet, the inlet and the outlet are communicated with the interior of the grinding barrel, the outlet is provided with a ball valve, the top of the fixed base is provided with a waste barrel, the outlet is communicated with the waste barrel, water is discharged in the interior of the grinding barrel after each grinding, the interior of the grinding barrel is cleaned, deviation caused by residues of last grinding is prevented, and the ball valve can control the time of water discharge, and the material is prevented from directly entering the interior of the waste tank through the outlet during grinding.

[0014] Preferably, the opening and closing mechanism comprises a fixed disc fixedly connected in the interior of the grinding barrel, a plurality of straight grooves in annular array are evenly arranged in the interior of the fixed disc, a long rod is slidably connected in the interior of the straight grooves, a reset spring is commonly welded between the long rod and the side wall of the straight grooves, a closing block is fixedly connected to the top of the long rod, a sliding block is fixedly connected to the top of the closing block, and a rotating disc is rotatably installed in the interior of the grinding barrel, a plurality of sliding grooves in annular array are evenly arranged in the interior of the rotating disc, and the sliding block is slidably connected in the interior of the sliding grooves.

[0015] Preferably, the outer circumferential surface of the rotating disc is fixedly sleeved with an opening and closing gear, the top of the annular placement disc is fixedly connected with a fixed disc, a plurality of fixed gears in annular array are fixedly connected to one side of the fixed disc, the fixed gears and the placement racks are in one-to-one correspondence, and the opening and closing gear is meshingly connected with the fixed gears.

[0016] The top of the fixed base is respectively provided with a microwave generator one and a microwave generator two, and the microwave generator one and the microwave generator two are symmetrically arranged.

[0017] Preferably, the top of the fixed base is fixedly connected with two vertically arranged vertical columns two, a horizontal sliding rail two is commonly installed between the two vertical columns two, a vertical sliding rail two is installed on the moving end of the horizontal sliding rail two, and a detection head is installed on the moving end of the vertical sliding rail two.

[0018] The working principle and beneficial effects of the present application are as follows:

[0019] 1、The present application is through the setting of sampling assembly and other structures, through the cooperation of the conveying belt and the sampler, realizes the automatic and continuous sampling process, improves the sampling efficiency, the cleaning mechanism of the conveying belt surface, through the synergistic effect of convex column, limiting block, cleaning brush and other components, effectively reduces the residual, avoids cross contamination, and guarantees the accuracy of the detection result.

[0020] 2、The present application is through the setting of processing assembly and other structures, the design of the grinding barrel and the crushing blade, can quickly and completely break the fish meat, provides uniform sample for subsequent detection, the annular placement disc driven by the servo motor and the closing block mechanism, realizes the automatic cup loading of the ground sample, improves the work efficiency, reduces the manual intervention

[0021] 3、The present application is through the setting of detection assembly and other structures, the cleaning mechanism of the grinding barrel, including water pipe, water outlet, waste barrel and other components, so that the grinding barrel can be cleaned in time and effectively after each use, maintains the sanitary state of the equipment, the design of the reset spring makes the grinding barrel can be automatically closed after cleaning, avoids external pollution, and also facilitates the maintenance of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0023] Figure 1 It is the overall structure schematic diagram of the present application;

[0024] Figure 2 It is the side sectional view of the present application;

[0025] Figure 3 It is the partial structure schematic diagram of the present application;

[0026] Figure 4 It is the front sectional view of the present application;

[0027] Figure 5 It is the conveying belt structure schematic diagram of the present application;

[0028] Figure 6 It is the opening and closing mechanism structure schematic diagram of the present application;

[0029] Figure 7 It is the fixed disc structure schematic diagram of the present application;

[0030] Figure 8 It is the closing block structure schematic diagram of the present application.

[0031] In the figure: 1. Fixed base; 2. Sampling assembly; 21. Horizontal slide rail 1; 22. Vertical slide rail 1; 23. Sampler; 24. Conveyor belt; 25. Driving shaft; 26. Boss; 27. Limiting groove; 28. Limiting block; 29. ​​Active shaft; 210. Passive shaft; 211. Cleaning brush; 212. Passive gear; 213. Active gear;

[0032] 3. Processing assembly; 301. Fixed bracket; 302. Grinding barrel; 303. Grinding motor; 304. Crushing shaft; 305. Water pipe; 306. Water outlet; 307. Crushing blade; 308. Feed inlet; 309. Discharge outlet; 310. Waste bin; 311. Opening and closing mechanism; 312. Opening and closing gear; 313. Fixed gear; 314. Fixed disk; 315. Closing block; 316. Slider; 317. Slide; 318. Return spring; 319. Straight slot; 320. Long rod; 321. Rotating disk;

[0033] 4. Detection assembly; 41. Ring placement plate; 42. Placement rack; 43. Detection cup; 44. Second column; 45. Second horizontal slide rail; 46. Second vertical slide rail; 47. Detection head. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1-8 As shown, this embodiment provides a device for detecting heavy metal residues in freshwater products, comprising a fixed base 1, a sampling component 2, a processing component 3, and a detection component 4;

[0036] The sampling assembly 2 comprises a conveying belt 24 mounted on the top of the fixed base 1, a driving motor is mounted in the conveying belt 24, the output end of the driving motor is fixedly connected with a driving shaft 25 arranged coaxially through a shaft coupling, a driving wheel is arranged in the conveying belt 24 and is sleeved on the outer circumference surface of the driving shaft 25, a rotating wheel is fixedly sleeved on the outer circumference surface of the driving shaft 25, one side of the rotating wheel is fixedly connected with a protruding column 26, a driving shaft 29 and a driven shaft 210 are rotatably mounted in the conveying belt 24, a driving gear 213 is fixedly sleeved on the outer circumference surface of the driving shaft 29, a driven gear 212 is fixedly sleeved on the outer circumference surface of the driven shaft 210, the driving gear 213 and the driven gear 212 are meshedly connected, a limiting block 28 is fixedly sleeved on the outer circumference surface of the driving shaft 29, a limiting groove 27 is formed in the limiting block 28, the protruding column 26 is slidably connected in the limiting groove 27, and the cleaning brushes 211 are sleeved on the outer circumference surfaces of the driving shaft 29 and the driven shaft 210;

[0037] The processing assembly 3 comprises two symmetrical fixed supports 301 fixedly connected on the top of the fixed base 1, and a grinding barrel 302 is fixedly connected between the two fixed supports 301, a grinding motor 303 is mounted on the top of the grinding barrel 302, a pulverizing shaft 304 arranged coaxially is fixedly connected to the output end of the grinding motor 303 through a shaft coupling, a plurality of symmetrical pulverizing blades 307 are fixedly sleeved on the outer circumference surface of the pulverizing shaft 304, and an opening and closing mechanism 311 is mounted on the bottom of the grinding barrel 302.

[0038] The detection assembly 4 comprises an annular placement disc 41 rotatably mounted on the top of the fixed base 1, a servo motor is arranged on the bottom of the annular placement disc 41, the output end of the servo motor is fixedly connected in the annular placement disc 41 through a shaft coupling, a plurality of placement racks 42 arranged in an annular array are fixedly connected on the top of the annular placement disc 41, and detection cups 43 are arranged in the placement racks 42.

[0039] As shown in Figures 1-8 The sampling assembly 2 further comprises two symmetrical stands fixedly connected on the top of the fixed base 1, a horizontal sliding rail one 21 is mounted between the two stands, a vertical sliding rail one 22 is mounted on one side of the movable end of the horizontal sliding rail one 21, a sampler 23 is mounted on the movable end of the vertical sliding rail one 22, and the sampler 23 can move along the direction of the conveying belt 24, so that the material on the top of the conveying belt 24 can be sampled.

[0040] As shown in Figures 1-8 The inner part of the grinding barrel 302 is provided with a water delivery pipe 305, a plurality of water outlets 306 arranged in an annular array are arranged on the bottom of the water delivery pipe 305, and the water outlets 306 are located in the inner part of the grinding barrel 302.

[0041] The grinding barrel 302 is respectively provided with an inlet 308 and an outlet 309, both of which are communicated with the inside of the grinding barrel 302, and the outlet 309 is provided with a ball valve. The top of the fixed base 1 is provided with a waste barrel 310, which is communicated with the outlet 309. Water is arranged in the inside of the grinding barrel 302 to clean the inside of the grinding barrel 302 after each grinding to prevent the deviation caused by the residues of the last grinding. In addition, the arrangement of the ball valve can control the time of each water discharge to prevent the material from directly entering the inside of the waste tank through the outlet 309 during the grinding process.

[0042] As shown in Figures 1-8 The opening and closing mechanism 311 includes a fixed disc 314 fixedly connected in the inside of the grinding barrel 302, a plurality of straight grooves 319 are arranged in the inside of the fixed disc 314 in a ring array, a long rod 320 is slidably connected in the inside of the straight groove 319, a reset spring 318 is commonly welded between the long rod 320 and the side wall of the straight groove 319, a closing block 315 is fixedly connected to the top of the long rod 320, a sliding block 316 is fixedly connected to the top of the closing block 315, a rotating disc 321 is rotatably installed in the inside of the grinding barrel 302, a plurality of sliding grooves 317 are arranged in the inside of the rotating disc 321 in a ring array, the sliding block 316 is slidably connected in the inside of the sliding groove 317, and the reset spring 318 is arranged to reset the closing block 315 to close under the action of the reset spring 318 when the two gears are separated each time, preventing waste water from entering the inside of the detection cup 43 during cleaning.

[0043] As shown in Figures 1-8 The rotating disc 321 is fixedly sleeved with an opening and closing gear 312 on the outer periphery, the top of the ring-shaped placement disc 41 is fixedly connected with the fixed disc 314, a plurality of fixed gears 313 are fixedly connected to one side of the fixed disc 314 in a ring array, the fixed gears 313 and the placement racks 42 are in one-to-one correspondence, and the opening and closing gear 312 and the fixed gear 313 are meshingly connected.

[0044] The top of the fixed base 1 is respectively provided with a microwave generator one and a microwave generator two, which are arranged symmetrically. Through the open arrangement of the microwave generator one and the microwave generator two, when the detection cup 43 reaches between the microwave generator one and the microwave generator two, the fish meat in the inside can be directly digested, without the need for manual taking, achieving the effect of automatic digestion.

[0045] As shown in Figures 1-8As shown, the top of the fixed base 1 is fixedly connected with two vertically arranged columns two 44, two columns two 44 are jointly installed with a transverse slide rail two 45, the moving end of the transverse slide rail two 45 is installed with a vertical slide rail two 46, the moving end of the vertical slide rail two 46 is installed with a detection head 47, the detection head 47 is arranged to follow, which is more flexible during detection, and is also convenient for maintenance and maintenance of the detection head 47 after detection.

[0046] In this embodiment, first, the fresh water product to be detected is placed on the top of the conveying belt 24, then the conveying belt 24 is started, the conveying belt 24 will convey the goods to the bottom of the sampler 23, at this time the sampler 23 is aligned with the position to be sampled by controlling the transverse slide rail one 21, then the sampling is driven to move downward by starting the vertical slide rail one 22, and the goods at the bottom are sampled (it should be noted that the sampler 23 is an existing product that can be obtained from the market, the fish head is separated by applying pressure downward, and the fish meat is fixed by pumping air inside, which is prior art and will not be described in detail here), after the sampling is completed, the conveying belt 24 continues to move to sample the next goods, in the process, the driving shaft 25 drives the protruding column 26 to rotate, which drives the limit block 28 to reciprocate about the main shaft 29, the main shaft 29 drives the cleaning brush 211 to clean the surface of the conveying belt 24, at the same time, the rotation of the main shaft 29 drives the main gear 213 to rotate, the main gear 213 drives the driven gear 212 to rotate, the driven gear 212 drives the driven shaft 210 to rotate, and the driven shaft 210 drives the other cleaning brush 211 to reciprocate, so as to clean the surface, because the two shafts are connected by gears, they will rotate in opposite directions, so as to realize the reciprocating cleaning effect, by cleaning the surface of the conveying belt 24, the residue can be reduced, and cross contamination is prevented to affect the accuracy of detection;

[0047] Further, after the sampling is completed, the sampler 23 is driven by the transverse conveying belt 24 until the bottom of the sampler 23 is aligned with the feed inlet 308, at this time the sampler 23 pours the fish meat inside into the inside of the grinding barrel 302, the grinding motor 303 is started to drive the crushing blade 307 to crush the fish meat inside, after the crushing is completed, the grinding motor 303 is closed, the servo motor is started, the servo motor drives the annular placement disc 41 to rotate, the annular placement disc 41 drives the fixed gear 313 to rotate, which is meshed and connected with the opening and closing gear inside the grinding barrel 302, so as to drive the rotating disc 321 to rotate, and finally drive all the closing blocks 315 to move outward along the direction of the straight groove 319, so as to realize the opening and closing effect, and input the crushed fish meat into the inside of the detection cup 43;

[0048] Further, after the cup is filled, the servo motor is started to separate the fixed gear 313 and the opening and closing gear 312, at this time, all the sliders 316 are reset to close the grinding barrel 302 due to the reset spring 318, at this time, water is supplied to the inside of the grinding barrel 302 through the water supply pipe 305 and the water outlet 306 to clean, after cleaning, the ball valve at the top of the discharge port 309 is opened, the inside sewage is discharged into the inside of the waste barrel 310 through the discharge port 309, at this time, the cleaning of the grinding barrel 302 is completed;

[0049] Finally, after detecting that the cup 43 moves to between the microwave generator one 322 and the microwave generator two 323 along with the rotation of the annular placement disc 41, the two microwave generators are started to digest the fish meat in the cup 43 (it is to be noted that the microwave generator can be selected from a GMP150 microwave generator or any other generator that can achieve the effect, and the model is a commercially available product which will not be described in detail here), to facilitate subsequent detection, after digestion is completed, the servo motor is started to move the cup 43 to the bottom of the detection head 47, the detection head 47 (it is to be noted that the detection head 47 uses an electric refrigeration Si-pin detector to detect the liquid after digestion is completed) moves downward through the action of the vertical slide rail two 46 to detect the heavy metal in the inside.

[0050] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for detecting heavy metal residues in freshwater products, characterized in that: It comprises a fixed base (1), a sampling component (2), a processing component (3) and a detection component (4); The sampling assembly (2) includes a conveyor belt (24) installed on the top of the fixed base (1), a driving motor is installed inside the conveyor belt (24), the output end of the driving motor is fixedly connected to a coaxial driving shaft (25) through a coupling, a driving wheel is provided inside the conveyor belt (24), the driving wheel is sleeved on the outer peripheral surface of the driving shaft (25), a rotating wheel is fixedly sleeved on the outer peripheral surface of the driving shaft (25), a convex column (26) is fixedly connected to one side of the rotating wheel, and a driving shaft (29) and a driven shaft (29) are rotatably installed inside the conveyor belt (24). 210), a driving gear (213) is fixedly sleeved on the outer circumference of the driving shaft (29), a passive gear (212) is fixedly sleeved on the outer circumference of the passive shaft (210), the driving gear (213) and the passive gear (212) are meshed and connected, a limiting block (28) is fixedly sleeved on the outer circumference of the driving shaft (29), a limiting groove (27) is provided inside the limiting block (28), the convex column (26) is slidably connected inside the limiting groove (27), and a cleaning brush (211) is sleeved on the outer circumferences of the driving shaft (29) and the passive shaft (210); The processing assembly (3) comprises two symmetrically arranged fixed brackets (301) fixedly connected to the top of the fixed base (1); a grinding barrel (302) is fixedly connected between the two fixed brackets (301); a grinding motor (303) is installed on the top of the grinding barrel (302); an output end of the grinding motor (303) is fixedly connected to a coaxially arranged crushing shaft (304) through a coupling; a plurality of symmetrically arranged crushing blades (307) are fixedly sleeved on the outer peripheral surface of the crushing shaft (304); and an opening and closing mechanism (311) is installed on the bottom of the grinding barrel (302); The detection assembly (4) comprises an annular placement plate (41) rotatably mounted on the top of the fixed base (1); a servo motor is provided at the bottom of the annular placement plate (41); the output end of the servo motor is fixedly connected to the inside of the annular placement plate (41) through a coupling; a plurality of placement racks (42) uniformly distributed in an annular array are fixedly connected to the top of the annular placement plate (41); and a detection cup (43) is provided inside the placement rack (42).

2. A freshwater product heavy metal residue detection device according to claim 1, characterized in that: The sampling assembly (2) further comprises two symmetrically arranged columns fixedly connected to the top of the fixed base (1), a horizontal slide rail (21) being installed between the two columns, a vertical slide rail (22) being installed on one side of the movable end of the horizontal slide rail (21), and a sampler (23) being installed on the movable end of the vertical slide rail (22).

3. A device for detecting heavy metal residues in freshwater products according to claim 2, characterized in that: A water pipe (305) is provided inside the grinding barrel (302), and a plurality of water outlets (306) evenly distributed in a circular array are provided at the bottom of the water pipe (305), and the water outlets (306) are located inside the grinding barrel (302); The grinding barrel (302) is provided with a feed port (308) and a discharge port (309), respectively. The feed port (308) and the discharge port (309) are both connected to the interior of the grinding barrel (302). A ball valve is provided on the discharge port (309). A waste barrel (310) is provided on the top of the fixed base (1), and the discharge port (309) is connected to the waste barrel (310).

4. A device for detecting heavy metal residues in freshwater products according to claim 3, characterized in that: The opening and closing mechanism (311) includes a fixed disk (314) fixedly connected to the inside of the grinding barrel (302), a plurality of straight grooves (319) uniformly distributed in a circular array are provided inside the fixed disk (314), a long rod (320) is slidably connected inside the straight groove (319), a return spring (318) is welded between the long rod (320) and the side wall of the straight groove (319), a closing block (315) is fixedly connected to the top of the long rod (320), a slider (316) is fixedly connected to the top of the closing block (315), a rotating disk (321) is rotatably installed inside the grinding barrel (302), a plurality of sliding grooves (317) uniformly distributed in a circular array are provided inside the rotating disk (321), and the slider (316) is slidably connected inside the sliding groove (317).

5. A device for detecting heavy metal residues in freshwater products according to claim 4, characterized in that: An opening and closing gear (312) is fixedly sleeved on the outer circumference of the rotating disk (321); a fixed disk (314) is fixedly connected to the top of the annular placement disk (41); a plurality of fixed gears (313) uniformly distributed in an annular array are fixedly connected to one side of the fixed disk (314); the fixed gears (313) and the placement rack (42) correspond one to one, and the opening and closing gears (312) and the fixed gears (313) are meshed and connected; A microwave generator 1 and a microwave generator 2 are respectively provided on the top of the fixed base (1), and the microwave generator 1 and the microwave generator 2 are symmetrically arranged.

6. A device for detecting heavy metal residues in freshwater products according to claim 5, characterized in that: The top of the fixed base (1) is fixedly connected to two symmetrically arranged columns (44), a horizontal slide rail (45) is installed between the two columns (44), a vertical slide rail (46) is installed on the movable end of the horizontal slide rail (45), and a detection head (47) is installed on the movable end of the vertical slide rail (46).

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