Laboratory Sample Oscillator for Food Safety Detection

Abstract

The present invention relates to a laboratory sample oscillator for food safety detection, which includes a fixed frame. A fixed sleeve is welded on the fixed frame, and an installation frame is fixedly connected to the fixed sleeve through a support rod. An oscillation assembly is arranged on the installation frame. The oscillation assembly includes a swing arm and an annular mounting seat fixedly connected to one end of the swing arm. A self-tightening fixing component is arranged on the annular mounting seat. In the present invention, first, the rotating disk drives the movable block to reciprocate, so as to drive the placement cylinder to oscillate vertically with the sample tube, and at the same time, the placement cylinder is intermittently rotated to increase the oscillation intensity of each area of the inner wall of the sample tube, achieving a full-faceted and sufficient mixing effect for samples with relatively high viscosity. Then, combined with the eccentric clamping and fixing of the sample tube by the self-tightening fixing component, while realizing self-tightening and anti-loosening clamping, the position of the sample tube is changed in real time to change the oscillation frequency, further improving the oscillation quality and efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of oscillation devices, and particularly to a laboratory sample oscillator for food safety detection. Background Art

[0002] In the laboratory, during the pre-treatment stage before the detection of many samples, an oscillation mixing step is required to ensure the uniform distribution of the sample components. Usually, the sample tube is held by hand and the arm is waved up and down to achieve the oscillation mixing of the sample. However, the oscillation effect of this operation method cannot be guaranteed, and once a large number of samples are encountered, the labor cost is greatly increased and the work efficiency is greatly reduced.

[0003] For example, a sample pretreatment automatic oscillation mixing device with the publication number of CN111366443A in the prior art can perform automatic oscillation processing on the samples for food detection and reduce the burden on the operators. However, due to the single oscillation direction, when processing samples with high viscosity, this single oscillation method often fails to reach the inner wall area of the sample tube's swing path. Under the action of the swing centrifugal force, the oscillation intensity in this area is relatively low, resulting in the samples in this area being difficult to be effectively shaken, which is likely to affect the oscillation quality and subsequent detection results. If the oscillation time is extended to improve the oscillation quality, the oscillation efficiency will be reduced and the experiment time will be prolonged.

[0004] In view of the above technical defects, a solution is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a laboratory sample oscillator for food safety detection to solve the above-mentioned technical defects.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A laboratory sample oscillator for food safety detection includes a fixed frame, a fixed sleeve is welded on the fixed frame, and a plurality of support rods are fixedly connected to the outer circumferential wall of the fixed sleeve. The end of the support rod is fixedly connected with an installation frame, and an oscillation component is arranged on the installation frame;

[0007] The oscillation component includes a swing arm rotatably installed in the installation frame and an annular installation seat fixedly connected to one end of the swing arm. A self-tightening fixing component is arranged on the annular installation seat;

[0008] The self-tightening fixing component includes a placing cylinder rotatably installed on the annular installation seat. A trapezoidal plate matched with the placing cylinder is arranged inside the placing cylinder. A rotating disk is installed on the fixed sleeve for driving the swing arm to swing and the placing cylinder to rotate.

[0009] Preferably, a rotating shaft rotatably connected to the fixed sleeve is fixedly connected to the bottom of the rotating disc, and a motor for driving the rotation of the rotating shaft is bolted to the bottom of the fixed frame. An annular wavy groove is formed on the outer annular wall of the rotating disc.

[0010] Preferably, the annular wavy groove includes a plurality of swinging oblique segments and buffer oblique segments located at both ends of the swinging oblique segments.

[0011] Preferably, a U-shaped block slidably connected to the rotating disc is welded to one side of the mounting frame through a support plate. An active block is slidably connected inside the U-shaped block. A guiding pin adapted to the annular wavy groove is fixedly connected to one side of the active block. An auxiliary arm hinged to the active block is slidably connected inside the swinging arm.

[0012] Preferably, a ratchet is fixedly connected to the outer side wall of the placement cylinder. An installation groove is formed at the free end of the auxiliary arm. A rotating rod is rotatably connected inside the installation groove, and a ratchet pawl cooperating with the ratchet is fixedly connected to the rotating rod.

[0013] Preferably, a torsion spring is fixedly connected between the top of the ratchet pawl and the installation groove and on the outer side of the rotating rod. A plurality of elastic sheets cooperating with the ratchet are fixedly connected to the inner annular wall of the annular mounting seat.

[0014] Preferably, guiding rods slidably connected to the placement cylinder are symmetrically and fixedly connected to one side of the trapezoidal plate. A screw rod threadedly connected to the placement cylinder is rotatably connected to the trapezoidal plate, and a knob is fixedly connected to the free end of the screw rod. An elastic protection pad is fixedly connected to the bottom inside the placement cylinder, and an elastic anti-slip plate I is fixedly connected to the side of the placement cylinder far from the trapezoidal plate.

[0015] Preferably, a trapezoidal clamping block is arranged on the inclined surface of the trapezoidal plate. A slide rail is installed on the trapezoidal plate. A chute adapted to the slide rail is formed on the inclined surface of the trapezoidal clamping block. An arc-shaped groove is formed on one side of the trapezoidal clamping block, and an elastic anti-slip plate II is fixedly connected inside the arc-shaped groove.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) In the present invention, through the rotation of the rotating disc and the guidance of the annular wavy groove on the guiding pin, the active block is driven to reciprocate. In combination with the auxiliary arm, the swinging arm is prompted to carry the placement cylinder to swing up and down. While vertically oscillating the sample tube, the ratchet pawl is intermittently contacted with the ratchet, and the reverse rotation of the ratchet is restricted by the elastic sheet, so that the placement cylinder performs one-way intermittent rotation while swinging up and down, enabling the inner annular wall of each area of the sample tube to rotate to the area with the maximum centrifugal force, increasing the oscillation intensity, eliminating the problem that the food detection sample with high viscosity is difficult to move on one inner wall of the sample tube and cannot be fully mixed, and thus achieving the full and sufficient mixing effect of the sample inside the sample tube.

[0018] (2) The present invention also promotes the eccentric clamping and fixing of the sample tube by the trapezoidal clamp block through the movement of the trapezoidal plate. During the vertical oscillation process, the trapezoidal clamp block is driven to move by the upward swinging inertia of the sample tube. By using the inclined surfaces on the opposite sides of the trapezoidal clamp block and the trapezoidal plate, the clamping force on the sample tube is automatically increased, effectively avoiding the problem of the sample tube falling off due to the swinging inertia, and ensuring the safety and stability of the experiment.

[0019] In addition, through the eccentric clamping of the sample tube combined with the one-way intermittent rotation of the placement cylinder, the distance between the sample tube and the rotating disk can be changed in real time, thereby adjusting the fixed oscillation frequency during the oscillation process and further improving the oscillation quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings;

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is an installation schematic diagram of the oscillation assembly of the present invention;

[0023] Figure 3 is a schematic structural diagram of the rotating disk of the present invention;

[0024] Figure 4 is a schematic diagram of the cooperation between the oscillation assembly and the self-tightening fixing assembly of the present invention;

[0025] Figure 5 is a schematic diagram of the cooperation between the swing arm and the auxiliary arm of the present invention;

[0026] Figure 6 is a schematic structural diagram of the annular mounting seat of the present invention;

[0027] Figure 7 is a schematic structural diagram of the auxiliary arm of the present invention;

[0028] Figure 8 is a schematic diagram of the cooperation between the ratchet and the pawl of the present invention;

[0029] Figure 9 is a schematic structural diagram of the self-tightening fixing assembly of the present invention;

[0030] Figure 10 is a disassembled schematic diagram of the trapezoidal plate and the trapezoidal clamp block of the present invention.

[0031] LEGEND DESCRIPTION:

[0032] 1. Fixed frame; 11. Fixed sleeve; 12. Support rod; 13. Installation frame; 14. U-shaped block;

[0033] 2. Oscillation assembly; 21. Swing arm; 22. Ring-shaped mounting seat; 23. Movable block; 24. Guide pin; 25. Auxiliary arm; 26. Pawl; 27. Torsion spring; 28. Elastic sheet;

[0034] 3. Self-tightening fixing assembly; 31. Placing cylinder; 32. Trapezoidal plate; 33. Ratchet wheel; 34. Guide rod; 35. Screw; 36. Elastic protection pad; 37. First elastic anti-slip plate; 38. Trapezoidal clamping block; 39. Second elastic anti-slip plate;

[0035] 4. Rotating disk; 41. Rotating shaft; 42. Motor; 43. Ring-shaped wavy groove. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1: Please refer to Figures 1-9 As shown, in view of the problem that it is difficult to achieve a full and sufficient mixing of samples with high viscosity due to the single oscillation direction in the prior art, the following solutions can be adopted to solve the problem;

[0038] In this embodiment, a laboratory sample oscillator for food safety detection includes a fixed frame 1. Multiple support columns distributed in a rectangular array are welded to the bottom of the fixed frame 1 to stably support the fixed frame 1. A fixed sleeve 11 is welded to the fixed frame 1, and multiple support rods 12 are fixedly connected to the outer circumferential wall of the fixed sleeve 11. The end of the support rod 12 is fixedly connected to a mounting frame 13, and an oscillation assembly 2 is arranged on the mounting frame 13;

[0039] By arranging multiple oscillation assemblies 2, during use, multiple sample tubes can be synchronously oscillated. The oscillation assembly 2 includes a swing arm 21 rotatably mounted in the mounting frame 13 and a ring-shaped mounting seat 22 fixedly connected to one end of the swing arm 21. The sample tube is fixed by a self-tightening fixing assembly 3, and then through the forward and reverse deflection swing of the swing arm 21, combined with the ring-shaped mounting seat 22 and the self-tightening fixing assembly 3, vertical oscillation processing of the sample tube is realized;

[0040] A self-tightening fixing component 3 is arranged on the annular mounting base 22 for fixing the sample tube during oscillation. The self-tightening fixing component 3 includes a placing cylinder 31 rotatably mounted on the annular mounting base 22. A trapezoidal plate 32 matched with the placing cylinder 31 is arranged inside the placing cylinder 31. The covered sample tube containing the food detection sample is placed inside the corresponding placing cylinder 31, and the sample tube is clamped and fixed by squeezing the trapezoidal plate 32. A rotating disc 4 for driving the swing arm 21 to swing and the placing cylinder 31 to rotate is mounted on the fixing sleeve 11.

[0041] The bottom of the rotating disc 4 is fixedly connected with a rotating shaft 41 rotatably connected with the fixing sleeve 11. The top of the rotating shaft 41 extends to the outside of the top of the fixing sleeve 11 for mounting the rotating disc 4. The bottom of the rotating shaft 41 extends below the fixed frame 1 for being connected with the motor 42 through a transmission to drive the motor 42 to drive the rotating disc 4 to rotate.

[0042] The motor 42 for driving the rotating shaft 41 to rotate is bolt-mounted at the bottom of the fixed frame 1. An annular wave groove 43 is formed on the annular outer wall of the rotating disc 4. The motor 42 drives the rotating disc 4 to rotate through the rotating shaft 41. Through the rotation of the rotating disc 4, the guide pin 24 is guided by the annular wave groove 43 to make the movable block 23 reciprocate up and down.

[0043] The annular wave groove 43 includes a plurality of swing inclined segments and buffer inclined segments located at both ends of the swing inclined segments. The swing inclined segments and the buffer inclined segments on both sides, and between adjacent two buffer inclined segments are all smoothly connected. And the included angle between the swing inclined segment and the horizontal plane of the rotating disc 4 is greater than the included angle between the buffer inclined segment and the horizontal plane of the rotating disc 4 (the two included angles are on the same side).

[0044] So that during the rotation of the rotating disc 4, the lifting speed of the guide pin 24 in the swing inclined segment is greater than the lifting speed of the guide pin 24 in the buffer inclined segment. After the guide pin 24 enters the buffer inclined segment from the swing inclined segment, the moving speed of the movable block 23 is forced to decrease, and the speed of the placing cylinder 31 swinging to the highest or lowest position is slowed down for buffering and decelerating to reduce the noise generated during the swinging process.

[0045] One side of the mounting frame 13 is welded with a U-shaped block 14 slidably connected with the rotating disc 4 through a support plate. The provided U-shaped block 14 is not only used for slidably mounting the movable block 23, but also used to increase the stability during the rotation of the rotating disc 4. The movable block 23 is slidably connected inside the U-shaped block 14. One side of the movable block 23 is fixedly connected with a guide pin 24 adapted to the annular wave groove 43.

[0046] The inside of the swing arm 21 is slidably connected with an auxiliary arm 25 hinged to the movable block 23. When the rotating disk 4 rotates, the guiding pin 24 is guided by the annular wave groove 43, so as to promote the lifting movement of the movable block 23. The movable block 23 drives the swing arm 21 to carry the placing cylinder 31 to swing up and down through the hinged auxiliary arm 25, realizing the vertical oscillation of the sample tube.

[0047] A ratchet wheel 33 is fixedly connected to the outer side wall of the placing cylinder 31. An annular groove is formed on the outer side wall of the placing cylinder 31. The annular mounting seat 22 is engaged in the annular groove. An installation groove is formed at the free end of the auxiliary arm 25. A rotating rod is rotatably connected to the inside of the installation groove, and a pawl 26 matched with the ratchet wheel 33 is fixedly connected to the rotating rod. The swing arm 21 is eccentrically arranged on one side of the axis of the annular mounting seat 22, so that when the pawl 26 moves towards the annular mounting seat 22, after the pawl 26 contacts the ratchet wheel 33, the pawl 26 pushes the ratchet wheel 33 to drive the placing cylinder 31 to rotate.

[0048] When the movable block 23 moves upward in the area above the middle of the U-shaped block 14 or moves downward in the area below the middle of the U-shaped block 14, the auxiliary arm 25 is pulled to move away from the annular mounting seat 22, so as to promote the separation of the pawl 26 from the ratchet wheel 33. When the movable block 23 moves downward in the area above the middle of the U-shaped block 14 or moves upward in the area below the middle of the U-shaped block 14, the auxiliary arm 25 moves close to the annular mounting seat 22, so as to promote the contact between the pawl 26 and the ratchet wheel 33, and the pawl 26 pushes the placing cylinder 31 to deflect at a small angle.

[0049] A torsion spring 27 is fixedly connected between the top of the pawl 26 and the installation groove and on the outer side of the rotating rod. After the pawl 26 is separated from the ratchet wheel 33, the pawl 26 deflects and resets towards the axis direction of the annular mounting seat 22 under the torsional elastic force of the torsion spring 27 until one side of the pawl 26 abuts against the side wall of the installation groove. A plurality of elastic pieces 28 matched with the ratchet wheel 33 are fixedly connected to the annular inner wall of the annular mounting seat 22. By arranging the plurality of elastic pieces 28, after the pawl 26 is separated from the ratchet wheel 33, the reverse rotation of the ratchet wheel 33 is restricted. Combined with the intermittent movement of the pawl 26 contacting the ratchet wheel 33, the placing cylinder 31 rotates intermittently in one direction.

[0050] Through the continuous rotation of the rotating disk 4, the placing cylinder 31 is promoted to rotate intermittently while swinging up and down, so that the annular inner walls of each area of the sample tube are sequentially rotated to the farthest position from the rotating disk 4, and multi-directional vibration treatment is carried out. Combined with the larger centrifugal force at this position during the vertical oscillation of the sample tube, the oscillation intensity is increased to eliminate the problem that the sample with high viscosity for food detection is difficult to move on one inner wall of the sample tube, resulting in insufficient mixing. Furthermore, the full and sufficient mixing effect of the sample inside the sample tube is achieved.

[0051] Embodiment 2: Please refer to Figures 8-10As shown in the figure, for the problem that the oscillation frequency is fixed and it is difficult to further improve the oscillation quality and shorten the oscillation time, the following solutions can be adopted;

[0052] In this embodiment, guide rods 34 that are symmetrically and fixedly connected to one side of the trapezoidal plate 32 and slidably connected to the placement cylinder 31 are provided to increase the stability of the trapezoidal plate 32 moving in the placement cylinder 31 and clamping the sample tube. A screw rod 35 that is rotationally connected to the trapezoidal plate 32 and threadedly connected to the placement cylinder 31 is provided on the trapezoidal plate 32, and a knob is fixedly connected to the free end of the screw rod 35. By rotating the knob, the screw rod 35 is driven to rotate, pushing the trapezoidal plate 32 to move. An elastic protection pad 36 is fixedly connected to the bottom inside the placement cylinder 31 to increase the protection effect on the bottom of the sample tube. An elastic anti-slip plate 37 is fixedly connected to one side inside the placement cylinder 31 away from the trapezoidal plate 32 to increase the contact friction between the sample tube and the inner wall of the placement cylinder 31, thereby improving the clamping and fixing effect.

[0053] Trapezoidal clamping blocks 38 are provided on the inclined surface of the trapezoidal plate 32. Slide rails are installed on the trapezoidal plate 32. Sliding grooves adapted to the slide rails are provided on the inclined surface of the trapezoidal clamping blocks 38. The cross-sections of the slide rails and the sliding grooves are both trapezoidal structures to prevent the trapezoidal clamping blocks 38 from separating from the trapezoidal plate 32. An arc-shaped groove is provided on one side of the trapezoidal clamping block 38, and an elastic anti-slip plate 39 is fixedly connected inside the arc-shaped groove. The provided arc-shaped groove is used to increase the contact area between the trapezoidal clamping block 38 and the sample tube. The provided elastic anti-slip plate 39 and the elastic anti-slip plate 37 achieve elastic clamping, avoiding clamping damage to the sample tube and further increasing the clamping friction;

[0054] During the rising process of the sample tube, an upward acting force is generated due to the swinging inertia, thereby driving the trapezoidal clamping block 38 to move on the trapezoidal plate 32. By using the inclined surfaces on the opposite sides of the trapezoidal clamping block 38 and the trapezoidal plate 32, the clamping force of the trapezoidal clamping block 38 on the sample tube is autonomously increased, avoiding the problem of the sample tube falling off due to the swinging inertia, ensuring the safety and stability of the experiment, and by eccentrically fixing the sample tube and combining with the rotation of the placement cylinder 31, the distance between the sample tube and the turntable 4 is changed in real time to adjust the fixed oscillation frequency during the oscillation process, further improving the oscillation quality and efficiency.

[0055] Embodiment Three: Please refer to Figures 1-10 As shown in the figure, the present invention also proposes a method for using a laboratory sample oscillator for food safety detection, including the following steps:

[0056] Step One: Place the covered sample tube containing the food detection sample inside the corresponding placement cylinder 31. Rotate the knob to drive the screw rod 35 to rotate, pushing the trapezoidal plate 32 to carry the trapezoidal clamping block 38 to move, and eccentrically clamping and fixing the sample tube through the elastic anti-slip plate 37 and the elastic anti-slip plate 39;

[0057] Step 2: The motor 42 drives the rotating disk 4 to rotate through the rotating shaft 41. Through the rotation of the rotating disk 4, combined with the multiple swinging oblique segments in the annular wavy groove 43 to guide the guide pin 24, the movable block 23 is urged to reciprocate up and down. The movable block 23 urges the swinging arm 21 to carry the placing cylinder 31 to swing up and down through the hinged auxiliary arm 25, performing vertical oscillation on the sample tube. During the rising process of the sample tube, an upward acting force is generated due to the swinging inertia, thereby driving the trapezoidal clamping block 38 to move on the trapezoidal plate 32. By using the inclined surfaces on the opposite sides of the trapezoidal clamping block 38 and the trapezoidal plate 32, the clamping force of the trapezoidal clamping block 38 on the sample tube is autonomously increased to prevent the sample tube from falling off due to swinging inertia;

[0058] When the guide pin 24 enters the buffer oblique segment from the swinging oblique segment, the moving speed of the movable block 23 is reduced, thereby slowing down the speed of the placing cylinder 31 swinging to the highest or lowest position, performing buffer deceleration to reduce the noise generated during the swinging process;

[0059] Step 3: When the movable block 23 moves upward in the area above the middle of the U-shaped block 14 or moves downward in the area below the middle of the U-shaped block 14, the auxiliary arm 25 is pulled to move away from the annular mounting seat 22, causing the pawl 26 to separate from the ratchet wheel 33. The pawl 26 performs a reset movement under the torsional elastic force of the torsion spring 27. When the movable block 23 moves downward in the area above the middle of the U-shaped block 14 or moves upward in the area below the middle of the U-shaped block 14, the auxiliary arm 25 moves closer to the annular mounting seat 22, causing the pawl 26 to contact the ratchet wheel 33, driving the pawl 26 to deflect and pushing the placing cylinder 31 to deflect at a small angle;

[0060] Through the continuous rotation of the rotating disk 4, the placing cylinder 31 is caused to perform intermittent rotation while swinging up and down, so that the annular inner walls of each area of the sample tube are sequentially rotated to the farthest position from the rotating disk 4, performing multi-directional vibration processing. And combined with the relatively large centrifugal force at this position during the vertical oscillation of the sample tube, the oscillation intensity is increased. And through the eccentric fixation of the sample tube and the rotation of the placing cylinder 31, the distance between the sample tube and the rotating disk 4 is changed in real time to adjust the fixed oscillation frequency during the oscillation process, further improving the oscillation quality and efficiency.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A laboratory sample oscillator based on food safety testing, comprising a fixed frame (1), characterized in that: A fixing sleeve (11) is welded to the fixing frame (1), and a plurality of support rods (12) are fixedly connected to the annular outer wall of the fixing sleeve (11), and ends of the support rods (12) are fixedly connected to a mounting frame (13), and an oscillating assembly (2) is arranged on the mounting frame (13); The oscillating assembly (2) comprises a swing arm (21) rotatably mounted in a mounting frame (13), and an annular mounting seat (22) fixedly connected to one end of the swing arm (21), wherein a self-tightening fixing assembly (3) is provided on the annular mounting seat (22); The self-tightening fixing assembly (3) comprises a placement cylinder (31) rotatably mounted on an annular mounting seat (22); a trapezoidal plate (32) matching the placement cylinder (31) is arranged inside the placement cylinder (31); and a rotating disk (4) for driving the swing arm (21) to swing and the placement cylinder (31) to rotate is installed on the fixing sleeve (11); A rotating shaft (41) rotatably connected to the fixed sleeve (11) is fixedly connected to the bottom of the rotating disk (4); a motor (42) for driving the rotating shaft (41) to rotate is bolted to the bottom of the fixed frame (1); and an annular wave groove (43) is provided on the annular outer wall of the rotating disk (4); A U-shaped block (14) slidably connected to the rotating disk (4) is welded to one side of the mounting frame (13) via a support plate; a movable block (23) is slidably connected inside the U-shaped block (14); a guide pin (24) adapted to the annular wave groove (43) is fixedly connected to one side of the movable block (23); and an auxiliary arm (25) hinged to the movable block (23) is slidably connected inside the swing arm (21); A ratchet (33) is fixedly connected to the outer wall of the placement cylinder (31), a mounting groove is formed at the free end of the auxiliary arm (25), a rotating rod is rotatably connected inside the mounting groove, and a ratchet pawl (26) matching the ratchet (33) is fixedly connected to the rotating rod.

2. The laboratory sample oscillator based on food safety testing according to claim 1, characterized in that: The annular wave groove (43) comprises a plurality of swing oblique sections and buffer oblique sections located at both ends of the swing oblique sections.

3. The laboratory sample oscillator based on food safety testing according to claim 1, characterized in that: A torsion spring (27) is fixedly connected between the top of the ratchet (26) and the mounting groove and located outside the rotating rod, and a plurality of elastic sheets (28) matching with the ratchet (33) are fixedly connected to the annular inner wall of the annular mounting seat (22).

4. The laboratory sample oscillator based on food safety testing according to claim 1, characterized in that: A guide rod (34) slidably connected to the placement tube (31) is symmetrically fixedly connected to one side of the trapezoidal plate (32); a screw rod (35) threadedly connected to the placement tube (31) is rotatably connected to the trapezoidal plate (32); a knob is fixedly connected to the free end of the screw rod (35); an elastic protective pad (36) is fixedly connected to the bottom of the placement tube (31); and an elastic anti-slip plate (37) is fixedly connected to the side of the placement tube (31) away from the trapezoidal plate (32).

5. The laboratory sample oscillator based on food safety testing according to claim 4, characterized in that: A trapezoidal clamping block (38) is arranged on the inclined surface of the trapezoidal plate (32), a slide rail is mounted on the trapezoidal plate (32), a slide groove matching the slide rail is provided on the inclined surface of the trapezoidal clamping block (38), an arc groove is provided on one side of the trapezoidal clamping block (38), and a second elastic anti-slide plate (39) is fixedly connected in the arc groove.

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