Novel auxiliary rapid benzoic acid detection device

Abstract

The utility model discloses a novel auxiliary rapid benzoic acid detection device, which relates to the technical field of food detection, and comprises a rectangular support frame and a fixing ring fixedly connected with the outer surface of one side of the rectangular support frame, a self-heating mechanism is arranged in the fixing ring, the self-heating mechanism comprises an external pipe arranged in the fixing ring, and the external pipe is connected with the outer surface of one side of the fixing ring. A water adding groove is formed in the upper edge of the external pipe. Compared with an existing common benzoic acid content rapid detection device, when the novel auxiliary rapid detection device for benzoic acid is used, 1.0 g of a test sample is weighed and placed in a 15 mL centrifugal test tube, 10 mL of water is added into the centrifugal test tube, then a proper amount of water is added into a water adding tank, quick lime in an interlayer is heated when meeting water, the outer wall of the centrifugal test tube is heated, standing is conducted for 20 min, and then the test sample is taken out. The liquid supernatant in the centrifugal test tube can be taken as a test solution, the fixing ring in the device facilitates placement of the external tube, long-time hand holding is avoided, the design can replace long-time water bath, and maintenance and cleaning are also avoided due to the disposable product.

Description

Technical Field

[0001] The utility model relates to the technical field of food detection, in particular to a novel auxiliary rapid detection device for benzoic acid. Background Art

[0002] As instant flavor foods with local characteristics, cold noodles, bowl trays, and sausages have a wide range of consumer groups in our province, especially in summer, where stalls selling cold noodles and bowl trays are all over the streets. At present, the market supply of such products is mainly small workshops and small processing points. It is difficult for such enterprises to meet the requirements of regulations in terms of preventing microbial contamination and product storage and transportation conditions. In order to extend the shelf life of the products, some manufacturers have adopted the method of adding benzoic acid to the products. Benzoic acid, as a common food additive, can be used safely within a certain range, but long-term consumption will destroy the normal balance of intestinal flora in the human body, and in severe cases, it will harm the liver and kidneys of the human body. GB 2760 clearly stipulates the scope and amount of use of benzoic acid and its sodium salt. According to the standard requirements, benzoic acid and its sodium salt shall not be used in cold noodles, bowl trays, and sausages. The existing rapid test of benzoic acid content lacks a quick and convenient detection equipment.

[0003] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a new auxiliary rapid detection device for benzoic acid is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a novel auxiliary rapid detection device for benzoic acid to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new auxiliary rapid detection device for benzoic acid, comprising a rectangular support frame and a fixed ring fixedly connected to the outer surface of one side of the rectangular support frame, a self-heating mechanism is arranged inside the fixed ring, the self-heating mechanism comprises an external tube arranged inside the fixed ring, a water adding groove is opened on the upper edge of the external tube, an isolation net is fixedly connected to the inner circular surface of the external tube, and the interlayer between the external tube and the isolation net is filled with disposable quicklime, and a centrifuge test tube is placed inside the external tube.

[0006] Preferably, a heating seat is provided below the rectangular support frame, and four limit blocks are fixedly connected to the upper surface of the heating seat, and the limit blocks are inserted into corresponding limit grooves on the lower surface of the rectangular support frame.

[0007] Preferably, a cup groove is provided on the upper surface of the heating seat, and a heating plate is provided on the inner bottom of the cup groove.

[0008] Preferably, a heating switch is provided on the front surface of the heating seat, and a reaction cup is provided inside the cup groove.

[0009] Preferably, a slide is slidably connected to the upper surface of the rectangular support frame, and a test paper clamp is fixedly connected to an outer surface of one side of the slide.

[0010] Preferably, an elastic clip is fixedly connected to the outer surface of one side of the test paper clamp, and the elastic clip can undergo elastic deformation.

[0011] Preferably, a colloidal gold test paper card is clamped between the elastic clip and the test paper clamping plate, and the colloidal gold test paper card extends into the interior of the reaction cup.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a rectangular support frame, a fixing ring, a self-heating mechanism, an external tube, a water tank, disposable quicklime, an isolation net, and a centrifugal test tube. When the device is used, 1.0 g of the test sample is first weighed and placed in a 15 mL centrifugal test tube, 10 mL of water is added to the centrifugal test tube, and then a proper amount of water is added to the water tank. The quicklime in the interlayer generates heat when it meets water, and the outer wall of the centrifugal test tube is heated. After standing for 20 minutes, the supernatant in the centrifugal test tube can be taken as the test sample solution. The fixing ring in the device facilitates the placement of the external tube and avoids long-term hand-holding. This design can replace a long-term water bath, and the disposable product also avoids maintenance and cleaning;

[0014] 2. The utility model is provided with a heating seat, a cup groove, a heating plate, a heating switch, a limit block, a reaction cup, a slide, a test paper splint, an elastic clip, and a colloidal gold test paper card. During the measurement, a sampling device is used to accurately transfer 200 μl of the solution to be tested from the inside of the centrifugal test tube, drip it into the reaction cup, and aspirate 5-10 times until the solution in the reaction cup is fully mixed. Then the heating switch is turned on. The reaction cup can be heated at 40°C for 3 minutes under the action of the heating plate, and then the colloidal gold test paper card is clamped on the test paper splint by the elastic clip. The lower end of the colloidal gold test paper card is inserted into the reaction cup, and continues to be heated at 40°C for 3 minutes under the action of the heating plate. The test paper strip is removed and the result is interpreted. The limit block and the corresponding jacks under the rectangular support frame are convenient for taking or placing the rectangular support frame. This design is convenient for heating and test paper detection, and avoids holding the colloidal gold test paper card for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of the self-heating mechanism 3 of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the heating seat 4 of the utility model;

[0018] Figure 4 For this utility model Figure 1Schematic diagram of the enlarged structure of A.

[0019] In the figure: 1. rectangular support frame; 2. fixing ring; 3. self-heating mechanism; 31. external tube; 32. water adding tank; 33. disposable quicklime; 34. isolation net; 35. centrifugal test tube; 4. heating seat; 5. cup slot; 6. heating plate; 7. heating switch; 8. limit block; 9. reaction cup; 10. slide; 11. test paper clamp; 12. elastic clamp; 13. colloidal gold test paper card. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-Figure 2 As shown, a novel auxiliary rapid detection device for benzoic acid comprises a rectangular support frame 1 and a fixing ring 2 fixedly connected to the outer surface of one side of the rectangular support frame 1, a self-heating mechanism 3 is arranged inside the fixing ring 2, and the self-heating mechanism 3 comprises an external tube 31 arranged inside the fixing ring 2, a water adding groove 32 is arranged on the upper edge of the external tube 31, an isolation net 34 is fixedly connected to the inner circumference of the external tube 31, and a disposable quicklime 33 is filled in the interlayer between the external tube 31 and the isolation net 34, and a centrifugal test tube 35 is placed inside the external tube 31 When the device is used, first weigh 1.0g of the test sample and place it in a 15mL centrifugal test tube 35, add 10mL of water to the centrifugal test tube 35, and then add an appropriate amount of water to the water tank 32. The quicklime in the interlayer generates heat when it meets water, and the outer wall of the centrifugal test tube 35 is heated. After standing for 20 minutes, the supernatant in the centrifugal test tube 35 can be taken as the test sample solution. The fixed ring 2 in the device facilitates the placement of the external tube 31 to avoid long-term hand-holding. This design can replace a long water bath, and disposable products also avoid maintenance and cleaning.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, a heating seat 4 is arranged below the rectangular support frame 1, and four limit blocks 8 are fixedly connected to the upper surface of the heating seat 4, and the limit blocks 8 are inserted into the corresponding limit grooves on the lower surface of the rectangular support frame 1, and the upper surface of the limit blocks 8 is provided with rounded corners to facilitate the plug-in operation.

[0023] Furthermore, a cup groove 5 is provided on the upper surface of the heating seat 4, and a heating plate 6 is provided at the inner bottom of the cup groove 5, and both the bottom of the cup groove 5 and the heating plate 6 are circular in design.

[0024] Furthermore, a heating switch 7 is provided on the front surface of the heating seat 4, a reaction cup 9 is provided inside the cup groove 5, and the reaction cup 9 is placed on the upper surface of the heating plate 6 to promote heat transfer. A portable holding block is provided on the upper surface of the reaction cup 9 to facilitate the operator to take the reaction cup 9.

[0025] Furthermore, a slide 10 is slidably connected to the upper surface of the rectangular support frame 1, a test paper clamp 11 is fixedly connected to the outer surface of one side of the slide 10, and the slide 10 is limitedly slidably connected to the upper surface of the rectangular support frame 1, so that the slide 10 can be taken.

[0026] Furthermore, an elastic clip 12 is fixedly connected to an outer surface of one side of the test paper clamp 11, and the elastic clip 12 can be elastically deformed.

[0027] Furthermore, a colloidal gold test paper card 13 is clamped between the elastic clip 12 and the test paper clamp 11, and the colloidal gold test paper card 13 extends into the reaction cup 9, so that the colloidal gold test paper card 13 can absorb the reaction solution, and the colloidal gold test paper card 13 can be replaced.

[0028] Working principle: When using the new auxiliary rapid detection device for benzoic acid, first, when using the device, weigh 1.0g of the test sample and place it in a 15mL centrifugal test tube 35, add 10mL of water to the centrifugal test tube 35, and then add an appropriate amount of water to the water tank 32. The quicklime in the interlayer will generate heat when it meets water, and the outer wall of the centrifugal test tube 35 will be heated. After standing for 20 minutes, the supernatant in the centrifugal test tube 35 can be taken as the test solution. The fixing ring 2 in the device facilitates the placement of the external tube 31 to avoid long-term hand-holding. When measuring, use a sampling device to accurately transfer 20 grams of the test solution from the inside of the centrifugal test tube 35. 0μl, drip into the reaction cup 9, aspirate 5-10 times, until the solution in the reaction cup 9 is fully mixed, and then turn on the heating switch 7. The reaction cup 9 can be heated at 40°C for 3 minutes under the action of the heating plate 6, and then the colloidal gold test paper card 13 is clamped on the test paper clamping plate 11 through the elastic clamp 12, and the lower end of the colloidal gold test paper card 13 is inserted into the reaction cup 9, and continues to be heated at 40°C for 3 minutes under the action of the heating plate 6, remove the test paper strip, and interpret the result. The limit block 8 and the corresponding jack under the rectangular support frame 1 are convenient for taking or placing the rectangular support frame 1. This is the working principle of the new auxiliary rapid detection device for benzoic acid.

Claims

1. A novel auxiliary rapid detection device for benzoic acid, comprising a rectangular support frame (1) and a fixing ring (2) fixedly connected to the outer surface of one side of the rectangular support frame (1), characterized in that: A self-heating mechanism (3) is arranged inside the fixing ring (2), and the self-heating mechanism (3) comprises an external tube (31) arranged inside the fixing ring (2), a water adding groove (32) is provided on the upper edge of the external tube (31), an isolation net (34) is fixedly connected to the inner circular surface of the external tube (31), and a sandwich between the external tube (31) and the isolation net (34) is filled with disposable quicklime (33), and a centrifugal test tube (35) is placed inside the external tube (31).

2. A novel auxiliary rapid detection device for benzoic acid according to claim 1, characterized in that: A heating seat (4) is arranged below the rectangular support frame (1), and four limit blocks (8) are fixedly connected to the upper surface of the heating seat (4), and the limit blocks (8) are inserted into corresponding limit grooves on the lower surface of the rectangular support frame (1).

3. A novel auxiliary rapid detection device for benzoic acid according to claim 2, characterized in that: The upper surface of the heating seat (4) is provided with a cup groove (5), and the inner bottom of the cup groove (5) is provided with a heating plate (6).

4. A novel auxiliary rapid detection device for benzoic acid according to claim 3, characterized in that: A heating switch (7) is arranged on the front surface of the heating seat (4), and a reaction cup (9) is arranged inside the cup groove (5).

5. A novel auxiliary rapid detection device for benzoic acid according to claim 1, characterized in that: The upper surface of the rectangular support frame (1) is slidably connected to a slide frame (10), and a test paper clamping plate (11) is fixedly connected to an outer surface of one side of the slide frame (10).

6. A novel auxiliary rapid detection device for benzoic acid according to claim 5, characterized in that: An elastic clip (12) is fixedly connected to the outer surface of one side of the test paper clamp (11), and the elastic clip (12) can undergo elastic deformation.

7. A novel auxiliary rapid detection device for benzoic acid according to claim 6, characterized in that: A colloidal gold test paper card (13) is clamped between the elastic clamping piece (12) and the test paper clamping plate (11), and the colloidal gold test paper card (13) extends into the interior of the reaction cup (9).

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