Centrifugal tube oscillation device for food inspection
By setting up positioning components with longitudinal and transverse sliders on the shaker, the problem of asymmetrical inertial force caused by the centrifuge tube rack deviating from the center of the shaking plate was solved, thus achieving uniformity of centrifuge tube oscillation and accuracy of food inspection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-24
AI Technical Summary
When existing shakers are in use, the centrifuge tube rack deviates from the center of the shaking plate, resulting in asymmetrical inertial forces that affect the mixing or separation effect, and consequently affect the accuracy of food inspection results.
A positioning assembly comprising a longitudinal slider and a transverse slider was designed to align the center of the centrifuge tube rack with the center of the oscillating plate through sliding and threaded connections, ensuring uniform oscillation.
This method achieves alignment between the center of the centrifuge tube rack and the center of the shaking plate, eliminates the influence of asymmetrical inertial forces, ensures consistent shaking effect, and improves the accuracy of food inspection.
Smart Images
Figure CN224024847U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to food inspection technical field, concretely is a centrifugal tube oscillation device for food inspection. BACKGROUND
[0002] In the field of food detection and analysis, the target object is first extracted from the food matrix in the organic pretreatment process, and then the solution of the target object is obtained through purification, concentration and other methods for qualitative and quantitative detection, so the centrifugal tube oscillation machine is used for auxiliary detection.
[0003] However, in actual application, the centrifugal tube rack with food samples is simply placed on the oscillation disc, and if the tube rack deviates from the center of the oscillation disc, it will cause asymmetric inertial force during rotation or oscillation, so that the centrifugal tube far from the center may oscillate violently due to greater force, and the tube close to the center may not oscillate enough, resulting in inconsistent mixing or separation effect, which affects the accuracy of subsequent food inspection results. UTILITY MODEL CONTENT
[0004] In view of the deficiencies of the prior art, the utility model provides a centrifugal tube oscillation device for food inspection, which solves the problems mentioned in the above background.
[0005] The utility model provides the following technical scheme: a centrifugal tube oscillation device for food inspection, comprising: an oscillation machine body, the oscillation machine body is provided with an oscillation disc, and the top surface of the oscillation machine body is provided with a pressing mechanism, the top surface of the oscillation disc is placed with a centrifugal tube rack, and the oscillation disc is provided with a positioning assembly facilitating the alignment of the center of the centrifugal tube rack with the center of the oscillation disc;The positioning assembly comprises a longitudinal slide and a transverse slide slidably arranged on the oscillation disc, a central shaft fixedly installed on the bottom surface of the oscillation disc, and an embedded nut embedded on the oscillation disc, the central shaft is rotatably provided with an upper layer turntable and a lower layer turntable, the bottom surface of the longitudinal slide is provided with a short shaft, the top surface of the upper layer turntable is provided with an upper layer convex shaft, an arc connecting rod is arranged between the short shaft and the upper layer convex shaft, the bottom surface of the transverse slide is provided with a long shaft, the bottom surface of the lower layer turntable is provided with a lower layer convex shaft, a straight connecting rod is arranged between the long shaft and the lower layer convex shaft, and the oscillation disc is threadedly connected with a screw rod through the embedded nut;The pressing mechanism comprises a vertical rod fixedly installed on the top surface of the oscillation machine body, a sliding cylinder slidably arranged on the vertical rod, an installation plate fixedly installed on the sliding cylinder, a locking bolt threadedly connected with the sliding cylinder, and a soft pressing plate fixedly installed on the bottom surface of the installation plate adjacent to the oscillation disc.
[0006] Preferably, the two ends of the arc connecting rod are movably connected with the short shaft and the upper layer convex shaft respectively, and the two ends of the straight connecting rod are movably connected with the long shaft and the lower layer convex shaft respectively.
[0007] Preferably, there are two vertical sliders, and the number of horizontal sliders is the same as the number of vertical sliders.
[0008] Preferably, the side of the longitudinal slider is provided with a protrusion for maintaining a sliding connection with the oscillating disk, and the shape of the transverse slider is consistent with the shape of the longitudinal slider.
[0009] Preferably, the outer surface of the central shaft is provided with an annulus for separating the upper turntable from the lower turntable.
[0010] Preferably, the central shaft is located at the center point of the oscillating disk, and a gap is provided between the central shaft and the oscillating body.
[0011] Preferably, the end face of the screw can contact the longitudinal slider or the transverse slider.
[0012] Preferably, a knob is provided at the end of the screw away from the oscillating disc, and the outer surface of the knob is provided with anti-slip texture.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. This centrifuge tube shaking device for food inspection, by setting a positioning component on the shaking plate, includes two longitudinal sliders and two transverse sliders that can slide flexibly on the shaking plate. The two longitudinal sliders are connected by other structures contained in the positioning component, so that the distance between the two longitudinal sliders and the center of the shaking plate is always consistent, and the same is true for the two transverse sliders. Therefore, when the centrifuge tube rack is placed between the two longitudinal sliders and the two transverse sliders, the center of the centrifuge tube rack can be aligned with the center of the shaking plate, thereby eliminating the negative impact of asymmetrical inertial forces caused by center deviation.
[0015] 2. The centrifuge tube oscillation device for food inspection has symmetrically arranged components in the positioning assembly, which can reduce the impact of the additional positioning assembly on the center of gravity of the oscillation plate itself, ensure the oscillation effect produced by the oscillation plate after the oscillation machine is started, and guarantee the performance of the overall device. In addition, the entire positioning assembly also has the advantages of simple structure, convenient operation and low threshold for use. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the top surface structure of the oscillating disc of this utility model;
[0018] Figure 3 This is a schematic diagram of the bottom structure of the oscillating disc of this utility model;
[0019] Figure 4The utility model discloses a built-in nut structure schematic diagram.
[0020] Figure 5 The utility model discloses a positioning assembly structure explosion map.
[0021] In the drawing: 1, the oscillation machine body; 2, centrifugal tube frame; 3, the oscillation disc; 4, hold down mechanism; 41, vertical rod; 42, slide cylinder; 43, locking bolt; 44, mounting plate; 45, soft pressing plate; 5, positioning assembly; 51, longitudinal slide; 52, transverse slide; 53, screw rod; 54, long shaft; 55, straight connecting rod; 56, short shaft; 57, arc connecting rod; 58, central shaft; 59, lower layer turntable; 510, upper layer turntable; 511, built-in nut; 512, upper layer convex axle; 513, lower layer convex axle. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the range of protection of the utility model.
[0023] Please refer to Figures 1-5 A centrifugal tube oscillation device for food inspection, comprising: an oscillation machine body 1, an oscillation disc 3 is arranged on the oscillation machine body 1, and the top surface of the oscillation machine body 1 is provided with a hold down mechanism 4; the top surface of the oscillation disc 3 is placed with a centrifugal tube frame 2; and the oscillation disc 3 is provided with a positioning assembly 5 for aligning the center of the centrifugal tube frame 2 with the center of the oscillation disc 3.
[0024] The positioning assembly 5 comprises longitudinal sliders 51 and transverse sliders 52 slidingly arranged on the oscillation disc 3, a central shaft 58 fixedly arranged on the bottom surface of the oscillation disc 3, and an embedded nut 511 embedded on the oscillation disc 3, the central shaft 58 is rotatably arranged with an upper turntable 510 and a lower turntable 59, the bottom surface of the longitudinal slider 51 is arranged with a short shaft 56, the top surface of the upper turntable 510 is arranged with an upper convex shaft 512, the arc connecting rod 57 is arranged between the short shaft 56 and the upper convex shaft 512, the bottom surface of the transverse slider 52 is arranged with a long shaft 54, the bottom surface of the lower turntable 59 is arranged with a lower convex shaft 513, the straight connecting rod 55 is arranged between the long shaft 54 and the lower convex shaft 513, and the oscillation disc 3 is threadedly connected with a screw rod 53 through the embedded nut 511; the two ends of the arc connecting rod 57 are movably connected with the short shaft 56 and the upper convex shaft 512 respectively, the two ends of the straight connecting rod 55 are movably connected with the long shaft 54 and the lower convex shaft 513 respectively, the longitudinal sliders 51 are provided in two numbers, the number of the transverse sliders 52 is consistent with the number of the longitudinal sliders 51, the side surface of the longitudinal slider 51 is arranged with a protrusion for maintaining a sliding connection relationship with the oscillation disc 3, the shape of the transverse slider 52 is consistent with the shape of the longitudinal slider 51, the outer surface of the central shaft 58 is arranged with a ring body for separating the upper turntable 510 from the lower turntable 59, so that the upper turntable 510 or the lower turntable 59 can be individually rotated, thereby facilitating the user to adjust the position of the longitudinal slider 51 or the transverse slider 52, the central shaft 58 is located at the center point of the oscillation disc 3, and a gap is arranged between the central shaft 58 and the oscillation machine body 1, the end surface of the screw rod 53 can be in contact with the longitudinal slider 51 or the transverse slider 52, and the end portion of the screw rod 53 away from the oscillation disc 3 is arranged with a knob, the outer surface of the knob is arranged with anti-skid lines, thereby facilitating the user to operate and preventing the user from slipping.
[0025] The pressing mechanism 4 comprises a vertical rod 41 fixedly arranged on the top surface of the oscillation machine body 1, a sliding cylinder 42 slidingly arranged on the vertical rod 41, an installation plate 44 fixedly arranged on the sliding cylinder 42, and a locking bolt 43 threadedly connected with the sliding cylinder 42, and the bottom surface of the installation plate 44 adjacent to the oscillation disc 3 is fixedly arranged with a soft pressing plate 45.
[0026] The working principle is that the upper layer rotating disc 510 and the lower layer rotating disc 59 are arranged in sequence on the central shaft 58 fixed at the bottom surface of the oscillating disc 3, one end of the arc connecting rod 57 is movably connected with the short shaft 56 fixed on the longitudinal sliding block 51, the other end of the arc connecting rod 57 is movably connected with the upper layer convex shaft 512 fixed on the upper layer rotating disc 510, therefore, after the upper layer rotating disc 510 rotates, the two arc connecting rods 57 pull the two longitudinal sliding blocks 51 to slide on the oscillating disc 3, the distance between the longitudinal sliding block 51 and the center of the oscillating disc 3 is changed, the one end of the straight connecting rod 55 is movably connected with the lower layer convex shaft 513 fixed on the lower layer rotating disc 59, the other end of the straight connecting rod 55 is movably connected with the long shaft 54 fixed on the transverse sliding block 52, after the lower layer rotating disc 59 rotates, the two straight connecting rods 55 synchronously pull the two transverse sliding blocks 52 to slide on the oscillating disc 3, at this time, the center of the space formed between the two longitudinal sliding blocks 51 and the two transverse sliding blocks 52 is aligned with the center of the oscillating disc 3, and the size of the space can be adjusted according to the size of the centrifugal tube rack 2, so as to facilitate the user to align the center of the centrifugal tube rack 2 with the center of the oscillating disc 3, then the screw rod 53 fixed on the oscillating disc 3 is screwed, the plurality of screw rods 53 abut against the longitudinal sliding block 51 and the transverse sliding block 52 respectively, so as to limit the sliding of the longitudinal sliding block 51 and the transverse sliding block 52, the centrifugal tube rack 2 is limited on the oscillating disc 3, then the mounting plate 44 slidably connected with the vertical rod 41 is pushed down, the soft pressing plate 45 at the bottom surface of the mounting plate 44 is in contact with the top end of the centrifugal tube on the centrifugal tube rack 2, then the locking bolt 43 is screwed tightly, the slide cylinder 42 fixed on the mounting plate 44 is locked, the position of the mounting plate 44 and the soft pressing plate 45 is locked, finally the oscillating machine body 1 is started, the centrifugal tube rack 2 is driven by the oscillating disc 3 to oscillate, so that the centrifugal tube with food samples on the centrifugal tube rack 2 is oscillated.
[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A centrifuge tube shaking device for food inspection, characterized in that, include: A oscillating body (1) is provided on an oscillating plate (3), and a pressing mechanism (4) is provided on the top surface of the oscillating body (1). A centrifuge tube rack (2) is placed on the top surface of the oscillating plate (3), and a positioning component (5) is provided on the oscillating plate (3) to facilitate aligning the center of the centrifuge tube rack (2) with the center of the oscillating plate (3). The positioning component (5) includes a longitudinal slider (51) and a transverse slider (52) slidably disposed on the oscillating disk (3), a central shaft (58) fixedly installed on the bottom surface of the oscillating disk (3), and an embedded nut (511) embedded in the oscillating disk (3). An upper turntable (510) and a lower turntable (59) are rotatably disposed on the central shaft (58). A short shaft (56) is disposed on the bottom surface of the longitudinal slider (51). The upper turntable (510)... The top surface is provided with an upper convex shaft (512), and an arc connecting rod (57) is provided between the short shaft (56) and the upper convex shaft (512). The bottom surface of the transverse slider (52) is provided with a long shaft (54), and the bottom surface of the lower turntable (59) is provided with a lower convex shaft (513). A straight connecting rod (55) is provided between the long shaft (54) and the lower convex shaft (513). The oscillating disk (3) is threadedly connected to a screw (53) through a built-in nut (511). The pressing mechanism (4) includes a vertical rod (41) fixedly installed on the top surface of the oscillating body (1), a sliding cylinder (42) is slidably arranged on the vertical rod (41), an mounting plate (44) is fixedly installed on the sliding cylinder (42), and a locking bolt (43) is threadedly connected to the sliding cylinder (42). A soft pressure plate (45) is fixedly installed on the bottom surface of the mounting plate (44) adjacent to the oscillating plate (3).
2. The centrifuge tube shaking device for food inspection according to claim 1, characterized in that, The two ends of the arc connecting rod (57) are movably connected to the short shaft (56) and the upper convex shaft (512) respectively, and the two ends of the straight connecting rod (55) are movably connected to the long shaft (54) and the lower convex shaft (513) respectively.
3. The centrifuge tube shaking device for food inspection according to claim 1, characterized in that, There are two vertical sliders (51), and the number of horizontal sliders (52) is the same as the number of vertical sliders (51).
4. The centrifuge tube shaking device for food inspection according to claim 1, characterized in that, The side of the longitudinal slider (51) is provided with a protrusion for maintaining a sliding connection with the oscillating disk (3), and the shape of the transverse slider (52) is consistent with the shape of the longitudinal slider (51).
5. A centrifuge tube shaking device for food inspection according to claim 1, characterized in that, The outer surface of the central shaft (58) is provided with an annulus for separating the upper turntable (510) from the lower turntable (59).
6. The centrifuge tube shaking device for food inspection according to claim 1, characterized in that, The central shaft (58) is located at the center of the oscillating disk (3), and there is a gap between the central shaft (58) and the oscillating body (1).
7. The centrifuge tube shaking device for food inspection according to claim 1, characterized in that, The end face of the screw (53) can contact the longitudinal slider (51) or the transverse slider (52).
8. A centrifuge tube shaking device for food inspection according to claim 1, characterized in that, The screw (53) is provided with a knob at the end away from the oscillating disk (3), and the outer surface of the knob is provided with anti-slip texture.