A pretreatment device for efficient detection of tobacco leaf pesticide residues

Abstract

The utility model relates to the technical field of tobacco leaf pesticide residue detection, especially to a kind of pretreatment device for efficient tobacco leaf pesticide residue detection, it is not only can dry tobacco by setting this equipment, to shorten the grinding time of tobacco, and can first crush again grinding, improve its grinding effect, and can screen after grinding tobacco, to ensure that sample granularity is consistent, improve subsequent extraction effect;Including grinding barrel, two groups of crushing rollers, two groups of first belt pulley, first belt, first motor, mounting bracket, guide hopper, fixed grinding disc, two groups of fixing frame, dynamic grinding disc, discharge valve, bevel gear ring, bevel gear, second motor, four groups of supporting legs, drying device and screening device, two groups of crushing rollers rear end pass through the rear end of grinding barrel and extend to its outside, four groups of supporting legs are respectively installed at the left front side, left rear side, right front side and right rear side of grinding barrel bottom end, drying device is installed at the top end of grinding barrel, and screening device is located below discharge hopper.

Claims

1. A high-efficiency pretreatment device for detecting pesticide residues in tobacco leaves, characterized in that, include: Grinding barrel (1), with a mounting bracket (6) installed on the outside of the grinding barrel (1), and a discharge hopper (16) connected to the bottom of the grinding barrel (1); Two sets of crushing rollers (2) are rotatably installed in the upper part of the grinding barrel (1), and the rear ends of the two sets of crushing rollers (2) extend through the rear end of the grinding barrel (1) to its outside. Two sets of first pulleys (3) are installed at the rear of the two sets of crushing rollers (2) respectively, and the two sets of first pulleys (3) are connected by a first belt (4). The first motor (5) is connected to the rear end of the right crushing roller (2) and the first motor (5) is installed inside the mounting frame (6). A guide hopper (7) is installed in the middle of the grinding barrel (1). A fixed grinding disc (8) is installed at the output end of the guide hopper (7). The fixed grinding disc (8) is installed on the inner wall of the grinding barrel (1) through two sets of fixing brackets (9). The fixed grinding disc (8) is slidably connected to the moving grinding disc (10). The moving grinding disc (10) is rotatably installed on the inner wall of the grinding barrel (1). A discharge pipe (11) is connected to the left side of the bottom end of the moving grinding disc (10). A discharge valve (12) is installed in the middle of the discharge pipe (11). A bevel ring (13) is installed at the bottom of the moving grinding disc (10). A bevel gear (14) is meshed on the outer side of the bevel ring (13). A second motor (15) for driving the rotation of the bevel gear (14) is installed in the middle of the bevel gear (14). A drying device is installed at the top of the grinding barrel (1); The screening device is located below the discharge hopper (16).

2. The pretreatment device for efficient detection of tobacco leaf agricultural residues according to claim 1, characterized in that, The drying device includes a drying chamber (18), four sets of support pillars (19), two sets of fans (21), multiple sets of heating tubes (22), and a guide valve (24). The drying chamber (18) is installed on the top of the grinding barrel (1) via the four sets of support pillars (19). A feed hopper (20) is connected to the middle of the top of the drying chamber (18). Air inlets are connected to the left and right sides of the top of the drying chamber (18). Two sets of fans (21) are installed at the two air inlets of the drying chamber (18). Multiple sets of heating tubes (22) are installed at the bottom of the two sets of fans (21). A guide pipe (23) is connected to the bottom of the drying chamber (18). The output end of the guide pipe (23) is connected to the top of the grinding barrel (1). The guide valve (24) is installed on the guide pipe (23).

3. The pretreatment device for efficient detection of tobacco leaf agricultural residues according to claim 2, characterized in that, The screening device includes a screening box (25), three sets of screening screens (26), a collection box (27), a handle (28), a connecting rod (29), a drive wheel (30), a third motor (31), a cam (32), six sets of first telescopic tubes (33), six sets of first telescopic rods (34), six sets of first springs (35), and an installation device. The screening box (25) is located below the output end of the discharge hopper (16). The three sets of screening screens (26) are installed inside the screening box (25) through the installation device. The collection box (27) is slidably installed at the bottom of the screening box (25). The handle (28) is installed at the front end of the collection box (27). The connecting rod (29) is installed at the rear end of the installation device. The drive wheel (30) is rotated and installed at the rear end of the connecting rod (29). The third motor (31) is installed on the lower side of the rear end of the screening box (25), and the cam (32) is installed on the output end of the third motor (31). The cam (32) corresponds to the position of the drive wheel (30). The front and rear sides of the left and right ends of the screening box (25) and the rear end of the screening box (25) are all connected with sliding grooves. The installation device is located in the five sets of sliding grooves. The six sets of first telescopic tubes (33) are respectively installed at the bottom of the five sets of sliding grooves of the screening box (25). The six sets of first telescopic rods (34) are respectively slidably connected to the six sets of first telescopic tubes (33). The six sets of first springs (35) are respectively sleeved on the six sets of first telescopic rods (34). The top of the six sets of first telescopic rods (34) are respectively connected to the bottom of the lowest screening screen (26) and the installation device.

4. The pretreatment device for efficient detection of tobacco leaf agricultural residues according to claim 3, characterized in that, It also includes two sets of stirring shafts (36), two sets of stirring blades (37), two sets of second pulleys (38), a second belt (39) and a fourth motor (40). The two sets of stirring shafts (36) are rotatably installed on the left and right sides of the bottom of the drying chamber (18), respectively. The two sets of stirring blades (37) are installed on the two sets of stirring shafts (36) respectively. The two sets of stirring blades (37) are located inside the drying chamber (18). The two sets of second pulleys (38) are installed at the bottom of the two sets of stirring shafts (36) respectively. The two sets of second pulleys (38) are connected by the second belt (39). The fourth motor (40) is installed at the top of the grinding barrel (1). The output end of the fourth motor (40) is connected to the bottom of the left stirring shaft (36).

5. The pretreatment device for efficient detection of tobacco leaf agricultural residues according to claim 4, characterized in that, The installation device is configured with four sets of sliding plates (41) and connecting plates (42). The four sets of sliding plates (41) are respectively installed on the front and rear sides of the left and right ends of the three sets of screening screens (26). The four sets of sliding plates (41) slide in the four sets of sliding grooves in the screening box (25). The bottom ends of the four sets of sliding plates (41) are respectively connected to the top ends of the four sets of first telescopic rods (34) through electromagnets. The connecting plate (42) slides in the sliding groove at the rear end of the screening box (25). The bottom end of the connecting plate (42) is connected to the top ends of the two sets of first telescopic rods (34) at the rear through electromagnets.

6. The pretreatment device for efficient detection of tobacco leaf agricultural residues according to claim 5, characterized in that, It also includes four sets of second telescopic tubes (43), four sets of second telescopic rods (44) and four sets of second springs (45). The four sets of second telescopic rods (44) are slidably connected to the four sets of second telescopic tubes (43). The four sets of second telescopic rods (44) are respectively installed on the left front side, left rear side, right front side and right rear side of the bottom of the screening box (25). The four sets of second springs (45) are respectively sleeved on the four sets of second telescopic rods (44).

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