Food heavy metal detector

Abstract

A food heavy metal detector relates to the technical field of food heavy metal detection and comprises a shell, a lifting cavity is arranged in the shell, a sample box is mounted in the lifting cavity, a lifting driving rod is arranged at the rear end of the sample box, and a guide rod is arranged at the front end of the sample box. A plurality of sample cavities are formed in the sample box in a rectangular array mode, pressing blocks are arranged at the upper ends of the sample cavities, clamping mechanisms are arranged below the pressing blocks and comprise movable grooves, the movable grooves are formed in the two sides of the sample cavities, and the sample cavities communicate with the movable grooves; a clamping block is slidably mounted in the movable groove, a reset spring is fixedly mounted between the front and back of the clamping block and the movable groove, and the problems that a food heavy metal detector is poor in sample tube clamping effect and prone to loosening, and the sample tube is inconvenient to place and take are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to food heavy metal detection technical field, concretely is a kind of food heavy metal detector. BACKGROUND

[0002] Food heavy metal detector is a kind of electrochemical analysis instrument developed for the rapid detection of heavy metals in food samples. It is based on the principle that the chemical change of heavy metals is accompanied by electron transfer, and the content of heavy metals in the sample, such as lead, cadmium, copper, zinc, mercury, arsenic, chromium and nickel, is quantitatively analyzed by specific electrochemical signals or chemical reactions. The instrument has high precision, high stability and convenient operation, and can complete a large number of sample detection in a short time, greatly reducing the detection cost.

[0003] For example, the Chinese authorized patent "food heavy metal detector" with announcement number CN211741239U has a through groove on the bottom surface of the recess, and a vertical stepping motor is fixedly connected in the through groove. The stepping motor is coupled with a control circuit located inside the detector body. The control circuit is used to control the stepping motor output to rotate at the same interval and angle. The output end of the stepping motor is fixedly connected with a storage structure for placing the detection bottle. The detection bottle is rotated in turn for round robin detection by the control circuit and the stepping motor using the storage structure.

[0004] Although the above-mentioned prior art can detect heavy metals in samples, the clamping effect of the sample tube is poor, and the sample tube is prone to looseness during detection. Moreover, the sample box is recessed in the instrument, and it is inconvenient to place and take the sample tube, so it does not meet the existing needs. Therefore, we propose a food heavy metal detector. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of food heavy metal detector, to solve the problem that food heavy metal detector in the background art above is poor in clamping effect of sample tube and is prone to looseness and is inconvenient for the placement and taking of sample tube.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of food heavy metal detector, including shell, the inside of the shell is provided with lifting cavity, the inside of the lifting cavity is installed with sample box, the rear end of the sample box is provided with lifting drive rod, the front end of the sample box is provided with guide rod, the inside of the sample box is provided with multiple sample cavities in rectangular array, the upper end of the sample cavity is provided with pressing block, the lower of the pressing block is equipped with clamping mechanism, the clamping mechanism includes movable slot, it is provided in the two sides of the sample cavity, and sample cavity is communicated with movable slot, the inside of the movable slot is slidably installed with clamping block, and the front and back of the clamping block is fixedly installed with return spring between movable slot.

[0007] Preferably, the upper part of the clamping block is provided with a top block, and the upper end of the top block is fixed with the pressing block, and the contact surfaces of the top block and the clamping block are provided with inclined surfaces.

[0008] Preferably, the lower end of the lifting driving rod extends to the inside of the shell, and the lower end of the lifting driving rod is slidingly limited with the shell, the rear end of the inside of the shell is provided with a servo motor, the output shaft of the servo motor is provided with a screw rod, the screw rod extends to the inside of the lifting driving rod, and the screw rod is threadedly connected with the lifting driving rod.

[0009] Preferably, the front end of the inside of the shell is provided with a guide groove, the lower end of the guide rod extends to the inside of the guide groove, and the guide groove is slidingly connected with the guide rod.

[0010] Preferably, the back of the shell is provided with a receiving cavity, the inside of the receiving cavity is provided with an upper cover, the both sides of the lower end of the upper cover are fixedly provided with rotating shafts, the both sides of the receiving cavity are provided with rotating shaft limiting grooves, the rotating shafts are rotationally matched with the rotating shaft limiting grooves, and the shaft bodies of the rotating shafts are slidingly connected with the rotating shaft limiting grooves.

[0011] Preferably, one side of the shell is provided with an operation panel.

[0012] Preferably, the inner wall of the clamping block is adhesively fixed with a rubber lining.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a sample tube clamping mechanism is equipped with, after the user puts the sample tube into the sample cavity, through the pressing block of pressing down, drives the top block to move to the clamping block direction, the vertical plane of the top block and the vertical plane of the clamping block meet at the position, and the clamping block is fixed at the position, and the stability of the positioning of the clamping block to the sample tube is ensured, after the sample detection is completed, the user only needs to pull up the pressing block, and the top block is separated from the clamping block, under the action of the reset spring, the clamping block is retracted into the inside of the movable slot, and the sample tube is relaxed, and the user can take out the detected sample tube, which not only improves the convenience of operation, but also ensures the stability of the sample tube in the detection process, and avoids the influence of the accuracy of the detection result due to the shaking of the sample tube.

[0015] 2, the utility model discloses a sample box lifting mechanism is equipped with, before placing sample tube, through the opening servo motor, its output shaft drives screw rotation, under the friction of screw and lifting drive rod internal screw hole, cooperate the guiding effect of the inner chamber of shell to lifting drive rod, to drive sample box from the inside of shell to move up to the user to place sample tube, after placing, servo motor reverses, and sample box returns to the lower end of lifting cavity, and the heavy metal detection work is carried out, and after detection, automatic lifting, further bring the convenience for the collection of sample tube, not only save manpower, but also improve the automation degree of whole detection process, make food heavy metal detection work more efficient, smooth.

[0016] 3, the utility model discloses a cover storage mechanism is equipped with, before using heavy metal detector, the cover is closed in the upper of lifting cavity, and the user pulls the plate body of cover front end upwards, and the upper of lifting cavity is opened, when the cover rear end pivot rotates above pivot limiting slot, when the cover rotates to vertical state, under the action of gravity, the lower end of cover gradually extends to the inside of storage cavity, and at the same time, the pivot of cover rear end moves from the upper of pivot limiting slot downwards, to realize the storage of cover, not only avoid the damage or loss risk that cover is placed at random possibly brings, and reduce the contact of cover and outside, avoid the cover after the closure of lifting cavity, and the falling of pollutant into sample tube causes, and the decline of detection accuracy. DRAWINGS

[0017] Figure 1 It is the perspective drawing of the utility model;

[0018] Figure 2 It is the top view of the utility model;

[0019] Figure 3 It is the sample cavity inside clamping mechanism structure schematic view of the utility model;

[0020] Figure 4 It is the sample box lifting drive structure schematic view of the utility model;

[0021] Figure 5 It is the cover movable mechanism structure schematic view of the utility model.

[0022] In the drawing: 1, shell;2, cover;3, lifting cavity;4, sample box;5, sample cavity;6, pressing block;7, lifting drive rod;8, operation panel;9, movable slot;10, clamping block;11, return spring;12, top block;13, inclined plane;14, servo motor;15, screw;16, guide slot;17, guide rod;18, storage cavity;19, pivot limiting slot;20, pivot. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0024] Please refer to Figures 1-5 The present application provides an embodiment of a food heavy metal detector, which comprises a shell 1, a lifting cavity 3 arranged in the shell 1, a sample box 4 installed in the lifting cavity 3, a plurality of sample cavities 5 arranged in a rectangular array in the sample box 4, a pressing block 6 arranged at the upper end of each sample cavity 5, a clamping mechanism arranged below the pressing block 6, the clamping mechanism comprising a movable groove 9 arranged on both sides of the sample cavity 5 and communicating with the sample cavity 5, a clamping block 10 slidably installed in the movable groove 9, a return spring 11 fixedly installed between the front and back of the clamping block 10 and the movable groove 9, a top block 12 arranged above the clamping block 10 and fixedly connected with the pressing block 6 at the upper end of the top block 12, and an inclined surface 13 arranged on the contact surface of the top block 12 and the clamping block 10, and a rubber lining fixedly attached to the inner wall of the clamping block 10.

[0025] In use, after the user places a sample tube into the sample cavity 5, the user presses the pressing block 6 downward to drive the top block 12 to move towards the clamping block 10, and the vertical movement is converted into horizontal movement after the inclined surfaces of the two blocks contact, thereby driving the clamping block 10 to extend outward from the movable groove 9 until the outer wall of the clamping block 10 contacts the sample tube, at which time the vertical surface of the top block 12 contacts the vertical surface of the clamping block 10 to fix the clamping block 10 at this position, thereby ensuring the stability of the positioning of the clamping block 10 on the sample tube. After the sample detection is completed, the user only needs to pull the pressing block 6 upward to separate the top block 12 from the clamping block 10, and under the action of the return spring 11, the clamping block 10 is retracted into the movable groove 9, thereby releasing the sample tube. At this time, the user can take out the detected sample tube.

[0026] Please refer to Figure 1 、 Figure 2 and Figure 4The rear end of the sample box 4 is provided with a lifting driving rod 7, the lower end of the lifting driving rod 7 extends to the inside of the shell 1, and the lower end of the lifting driving rod 7 is slidingly limited with the shell 1, a servo motor 14 is installed at the rear end of the inside of the shell 1, a screw rod 15 is installed on the output shaft of the servo motor 14, the screw rod 15 extends to the inside of the lifting driving rod 7, and the screw rod 15 is threadedly connected with the lifting driving rod 7, before placing the sample tube, the servo motor 14 is turned on, the output shaft drives the screw rod 15 to rotate, under the friction of the screw rod 15 and the internal screw hole of the lifting driving rod 7, and the guidance of the inner cavity of the shell 1 to the lifting driving rod 7, the sample box 4 is lifted from the inside of the shell 1, so that the user can place the sample tube conveniently, after placing, the servo motor 14 is reversed, the sample box 4 returns to the lower end of the lifting cavity 3, and the heavy metal detection work is carried out, and after detection, it is automatically lifted.

[0027] Please refer to Figure 1 、 Figure 2 and Figure 4 , the front end of the sample box 4 is provided with a guide rod 17, the inside of the front end of the shell 1 is provided with a guide groove 16, the lower end of the guide rod 17 extends to the inside of the guide groove 16, and the guide groove 16 is slidingly connected with the guide rod 17, the stability of the lifting process of the sample box 4 is improved.

[0028] Please refer to Figure 1 and Figure 5 , the back of the shell 1 is provided with a receiving cavity 18, the receiving cavity 18 is internally provided with an upper cover 2, both sides of the lower end of the upper cover 2 are fixedly provided with a rotating shaft 20, both sides of the receiving cavity 18 are provided with a rotating shaft limiting groove 19, the rotating shaft 20 is rotationally matched with the rotating shaft limiting groove 19, and the shaft body of the rotating shaft 20 is slidingly connected with the rotating shaft limiting groove 19, before use, the upper cover 2 is closed above the lifting cavity 3, the user pulls the plate body at the front end of the upper cover 2 upwards, so that the upper end of the lifting cavity 3 is opened, at this time, the rotating shaft 20 at the rear end of the upper cover 2 rotates above the rotating shaft limiting groove 19, when the upper cover 2 is rotated to the vertical state, under the action of gravity, the lower end of the upper cover 2 gradually extends to the inside of the receiving cavity 18, and at the same time, the rotating shaft 20 at the rear end of the upper cover 2 moves from above the rotating shaft limiting groove 19 downwards, so that the receiving of the upper cover 2 is realized, not only the damage or loss risk caused by the random placement of the upper cover 2 is avoided, but also the contact between the upper cover 2 and the outside is reduced, and the pollution falling into the sample tube after the upper cover 2 closes the lifting cavity 3 is avoided, so that the detection accuracy is reduced.

[0029] Please refer to Figure 1 , one side of the shell 1 is provided with an operation panel 8, the heavy metal detector determines the content of heavy metal elements by measuring the fluorescence emitted by the sample under X-ray irradiation, since the X-ray fluorescence analysis method is prior art, it is not described in detail in the scheme.

[0030] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A food heavy metal detector comprising a housing (1), characterized in that: The inside of the shell (1) is provided with a lifting cavity (3), the inside of the lifting cavity (3) is mounted with a sample box (4), the rear end of the sample box (4) is provided with a lifting driving rod (7), the front end of the sample box (4) is provided with a guide rod (17), the inside of the sample box (4) is provided with a plurality of sample cavities (5) in a rectangular array, the upper end of the sample cavity (5) is provided with a pressing block (6), the lower side of the pressing block (6) is provided with a clamping mechanism, the clamping mechanism comprises a movable slot (9), which is provided on both sides of the sample cavity (5) and is communicated with the sample cavity (5), the inside of the movable slot (9) is slidably mounted with a clamping block (10), the front and rear of the clamping block (10) is fixedly mounted with a return spring (11).

2. The food heavy metal detector according to claim 1, characterized in that: The upper side of the clamping block (10) is provided with a top block (12), and the upper end of the top block (12) is fixed with the pressing block (6), and the contact surfaces of the top block (12) and the clamping block (10) are provided with inclined surfaces (13).

3. The food heavy metal detector according to claim 1, characterized in that: The lower end of the lifting driving rod (7) extends to the inside of the shell (1), and the lower end of the lifting driving rod (7) is slidingly limited with the shell (1), the rear end of the inside of the shell (1) is mounted with a servo motor (14), the output shaft of the servo motor (14) is mounted with a screw rod (15), the screw rod (15) extends to the inside of the lifting driving rod (7), and the screw rod (15) is threadedly connected with the lifting driving rod (7).

4. The food heavy metal detector according to claim 3, characterized in that: The front end of the inside of the shell (1) is provided with a guide slot (16), the lower end of the guide rod (17) extends to the inside of the guide slot (16), and the guide slot (16) is slidingly connected with the guide rod (17).

5. The food heavy metal detector according to claim 1, characterized in that: The back of the shell (1) is provided with a receiving cavity (18), the inside of the receiving cavity (18) is mounted with an upper cover (2), the both sides of the lower end of the upper cover (2) are fixedly provided with a rotating shaft (20), the both sides of the receiving cavity (18) are provided with a rotating shaft limiting slot (19), the rotating shaft (20) is rotationally matched with the rotating shaft limiting slot (19), and the shaft body of the rotating shaft (20) is slidingly connected with the rotating shaft limiting slot (19).

6. The food heavy metal detector according to claim 1, characterized in that: One side of the shell (1) is provided with an operation panel (8).

7. The food heavy metal detector according to claim 1, characterized in that: The inner wall of the clamping block (10) is adhesively fixed with a rubber lining.

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