Stirring device for detecting active oxygen content of fruit and vegetable washing salt

Abstract

The invention relates to the technical field of active oxygen content detection, and discloses a stirring device for detecting the active oxygen content of fruit and vegetable washing salt, the stirring device comprises a stirring box, a feeding seat with a cover is fixedly arranged on one side of the top end of the stirring box, a feeding port is formed in the outer surface of the stirring box, and the feeding seat with the cover and the feeding port are located on the same vertical plane; and a separation mechanism is arranged at the top end in the stirring box. By starting a motor, a scraper B integrally drives a flow guide seat A to rotate integrally, so that cleaning liquid is uniformly sprayed on the outer wall of the stirring box, the scraper A is in contact with the inner wall of the stirring box, and under the guide action of a connecting rod B, the stability of the scraper A during rotation is improved; the scraper A rotates to clean the inner wall, above the scraper B, of the stirring box, the inner side wall of the lower half part is cleaned through the scraper B, liquid obtained after cleaning is discharged through the discharging pipe, manual cleaning by workers is not needed, and the safety of the whole stirring box during cleaning is improved.

Description

Technical Field

[0001] The invention relates to the technical field of active oxygen content detection, in particular to a stirring device for detecting the active oxygen content of fruit and vegetable washing salt. Background Art

[0002] Fruit and vegetable washing salt is a new edible washing product specially used in households and restaurants. It is formulated based on the principle of the osmotic pressure sterilization and disinfection of high-concentration sodium chloride solution, and supplemented with substances containing active oxygen (generally sodium percarbonate) to increase its ability to decompose pesticide residues. The so-called active oxygen refers to the general term for substances containing oxygen and active in the body or natural environment. General detergents can at best remove toxic substances from the surface of clothing and fruits and vegetables, and eventually discharge them into the natural environment. The mechanism of action of fruit and vegetable washing salt is completely different. It can release active active oxygen molecules to attack the weak organic pesticide molecules and decompose them into water-soluble non-toxic small molecules, which reduces the pressure on the natural environment to degrade toxic substances, thereby achieving a strong sterilization, harmless to humans, and environmentally friendly effect; how to accurately detect the active oxygen content in fruit and vegetable washing salt is an important means to ensure product performance;

[0003] Chinese patent authorization announcement number CN107290476A discloses a method for determining active oxygen in fruit and vegetable washing salt. According to the mass ratio of fruit and vegetable washing salt, deionized water and defoaming agent of 1:2-4:0.01-0.03, the corresponding substances are weighed, deionized water is added to the washing salt to moisten it, sulfuric acid with a concentration of 0.5-4 mol / L is added to completely dissolve the washing salt, so that the pH value of the solution is 3-6, and then a defoaming agent is added, and a potassium permanganate standard titration solution with a concentration of 0.1-1 mol / L is used to titrate until the solution is pink and does not disappear for at least 60 seconds. This is the titration end point, and the volume of the potassium permanganate standard titration solution used for the titration is recorded. The content of active oxygen in the fruit and vegetable washing salt is calculated based on the amount of potassium permanganate used. The present invention does not require cumbersome steps, and only needs to use a defoaming agent to quickly and effectively destroy the foam, so as to effectively detect the active oxygen in the fruit and vegetable washing salt, and has a wide range of applications;

[0004] The above-mentioned prior art solution has the following shortcomings: when the device measures the active oxygen in fruit and vegetable washing salt, it is necessary to react with sulfuric acid and potassium permanganate solution in turn. In order to improve the fruit and vegetable washing salt, after testing fruit and vegetable washing salt of different brands and batches, the reaction container needs to be cleaned. Since sulfuric acid and potassium permanganate solution are both highly corrosive, manual cleaning by staff has certain risks, and inadequate cleaning is likely to affect the next set of test data. Therefore, there is room for improvement in this regard. Summary of the invention

[0005] The purpose of the present invention is to provide a stirring device for detecting the active oxygen content of fruit and vegetable washing salt, so as to solve the problem that both sulfuric acid and potassium permanganate solutions mentioned in the above background technology are highly corrosive, manual cleaning by staff has certain risks, and inadequate cleaning is likely to affect the number of the next group of tests.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a stirring device for detecting the active oxygen content of fruit and vegetable washing salt, comprising a stirring box, a feeding seat with a cover is fixedly arranged on one side of the top of the stirring box, a feeding port is provided on the outer surface of the stirring box, the feeding seat with a cover and the feeding port are on the same vertical plane, a separation mechanism is provided at the top of the stirring box, a scraper B is rotatably connected to the bottom end of the stirring box, a mounting groove A is provided at the bottom of the inner wall of the stirring box, and a motor is arranged inside the mounting groove A, the motor output shaft is fixedly connected to the bottom end of the scraper B, a connecting column is fixed at the top of the scraper B, and the connecting column An installation groove B is provided inside, and an electric telescopic rod is fixed to the bottom end of the inner side of the installation groove B, a moving column is fixed to the top of the electric telescopic rod, and scrapers A are fixed on both sides of the moving column, a clamping block is fixed to the top of the moving column, the top of the inside of the mixing box is rotatably connected with a guide seat B, and the outside of the guide seat B is fixed with a guide seat A, a nozzle is provided on the outside of the guide seat A, the inside of the guide seat B is connected with the inside of the guide seat A, a clamping groove is provided at the bottom of the guide seat B, an installation groove C is provided inside the inner wall of the mixing box, and a heating plate is provided inside the installation groove C, and a discharge pipe is provided at the bottom of one side of the mixing box.

[0007] Preferably, the separation mechanism includes a receiving groove arranged on the inner wall of the mixing box, and the receiving groove is located on one side of the feed port, the receiving groove is connected with the interior of the feed port, a spring is fixed on one side of the interior of the receiving groove, and a handle is fixed on the other side of the spring, and the handle extends to the outside of the receiving groove, a partition plate is fixed on the side of the handle away from the spring, and the partition plate extends into the interior of the feed port, and the partition plate is in contact with the side wall of the feed port.

[0008] Preferably, a connecting rod A is fixed to the outside of the connecting column, and a stirring blade is fixed to the outside of the connecting rod A, and the connecting rods A are arranged in a cross shape on the outside of the connecting column.

[0009] Preferably, the outer side of the scraper B fits with the inner wall of the mixing box, the bottom end of the scraper B fits with the bottom end of the inside of the mixing box, and one side of the scraper A fits with the inner wall of the mixing box.

[0010] Preferably, a connecting rod B is fixed to the bottom end of the scraper A, a connecting rod B is provided inside the scraper B, and the connecting rod B is slidably connected to the connecting groove.

[0011] Preferably, the size of the connecting groove is matched with the size of the connecting rod B, the size of the clamping groove is matched with the size of the clamping block, and the clamping groove and the clamping block are on the same vertical plane.

[0012] Preferably, a liquid inlet box is fixed to the top of the mixing box, and a connecting pipe is fixed inside the liquid inlet box, the connecting pipe extends out of the interior of the liquid inlet box, a through hole is provided inside the mixing box, the connecting pipe passes through the interior of the through hole, the connecting pipe extends to the inner side of the guide seat B, and the interior of the guide seat B is connected with the interior of the liquid inlet box through the connecting pipe.

[0013] Preferably, a rotating ring is fixed to the top of the guide seat B, a rotating groove A is provided at the top of the inner wall of the mixing box, and the rotating groove A is rotatably connected to the rotating ring, an annular seat is fixed to the outer side of the guide seat A, a rotating groove B is provided on the inner wall of the mixing box, and the rotating groove B is rotatably connected to the annular seat, a groove is provided inside the annular seat, and a ball is rotatably connected inside the groove, and the bottom end of the ball fits with the bottom end of the rotating groove B.

[0014] Preferably, a sulfuric acid containing box is provided on one side of the mixing box, a sealing cover is threadedly connected to the top of the sulfuric acid containing box, a liquid inlet is opened on one side of the inner wall of the mixing box, and a solenoid valve is provided inside the liquid inlet.

[0015] Preferably, a connecting groove is provided at the top of the inner wall of the mixing box, and a rubber seal is arranged inside the connecting groove. A material guide funnel is fixed at the top of the mixing box, and the material guide funnel, the connecting groove and the rubber seal are on the same vertical plane.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By starting the electric telescopic rod, the card block is connected with the card slot, and the motor is started, so that the scraper B as a whole drives the guide seat A to rotate as a whole, so that the cleaning liquid is evenly sprayed on the outer wall of the mixing box. The scraper A contacts the inner wall of the mixing box, and the connection rod B guides the connection rod B to increase the stability of the scraper A during rotation, so that the scraper A rotates to clean the inner wall of the mixing box above the scraper B, and the scraper B cleans the inner wall of the lower half. The cleaned liquid is discharged through the discharge pipe, and the staff does not need to perform manual cleaning, thereby improving the safety of the overall cleaning of the mixing box, avoiding the corrosive effects of sulfuric acid and potassium permanganate solution on the staff, and improving the cleaning efficiency inside the mixing box;

[0018] The opening and closing of the feed port can be controlled by the separation mechanism, which is convenient for intermittent feeding into the mixing box, avoiding splashing of solution during operation and causing unnecessary harm to the staff. By starting the motor to drive the scraper B and the connecting column to rotate, the dissolution efficiency of the sulfuric acid solution for the fruit and vegetable washing salt is accelerated, and the efficiency of the mixing reaction of the dissolved solution and the potassium permanganate solution is also accelerated. Since the mixing box is in a closed state during the whole process, splashing of the solution during operation and causing unnecessary harm to the staff are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the scraper B distribution of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the mobile column distribution of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide seat A of the present invention in a front section;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the guide seat A of the present invention when viewed from above;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the separation mechanism distribution of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the present invention.

[0027] Explanation of the reference numerals in the figure: 1. liquid inlet box; 2. stirring box; 3. feed seat with cover; 4. separation mechanism; 401. handle; 402. partition plate; 403. spring; 5. sulfuric acid holding box; 6. guide seat A; 7. scraper A; 8. scraper B; 9. motor; 10. heating plate; 11. stirring blade; 12. guide funnel; 13. moving column; 14. connecting column; 15. connecting rod A; 16. connecting groove; 17. connecting groove; 18. connecting rod B; 19. block; 20. electric telescopic rod; 21. annular seat; 22. nozzle; 23. guide seat B; 24. slot; 25. ball; 26. rotating ring; 27. connecting pipe; 28. rubber seal. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0029] Embodiment 1

[0030] In order to solve the problem that the existing sulfuric acid and potassium permanganate solutions in the prior art are both highly corrosive, manual cleaning by staff has certain risks, and inadequate cleaning is likely to affect the number of tests in the next group, the following solution is disclosed, specifically as follows: Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown:

[0031] A stirring device for detecting active oxygen content in fruit and vegetable washing salt comprises a stirring box 2, wherein a scraper B8 is rotatably connected to the bottom end of the stirring box 2, a mounting groove A is provided at the bottom of the inner wall of the stirring box 2, and a motor 9 is provided inside the mounting groove A, and an output shaft of the motor 9 is fixedly connected to the bottom end of the scraper B8, a connecting column 14 is fixed to the top end of the scraper B8, and a mounting groove B is provided inside the connecting column 14, and an electric telescopic rod 20 is fixed to the bottom end of the inner side of the mounting groove B, and a moving column 13 is fixed to the top end of the electric telescopic rod 20, and the moving column 13 is fixed to the top end of the electric telescopic rod 20. Scrapers A7 are fixed on both sides of 13, a block 19 is fixed on the top of the moving column 13, a guide seat B23 is rotatably connected to the top of the mixing box 2, and a guide seat A6 is fixed on the outside of the guide seat B23, a nozzle 22 is arranged on the outside of the guide seat A6, the inside of the guide seat B23 is connected to the inside of the guide seat A6, a card slot 24 is opened at the bottom of the guide seat B23, an installation slot C is arranged inside the inner wall of the mixing box 2, and a heating plate 10 is arranged inside the installation slot C, and a discharge pipe is arranged at the bottom of one side of the mixing box 2;

[0032] The outer side of the scraper B8 fits with the inner wall of the mixing box 2, the bottom end of the scraper B8 fits with the bottom end of the inside of the mixing box 2, and one side of the scraper A7 fits with the inner wall of the mixing box 2; a connecting rod B18 is fixed to the bottom end of the scraper A7, a connecting rod B18 is opened inside the scraper B8, and the connecting rod B18 is slidably connected to the connecting groove 17; the size of the connecting groove 17 is adapted to the size of the connecting rod B18, the size of the slot 24 is adapted to the size of the block 19, and the slot 24 and the block 19 are on the same vertical plane; the top of the mixing box 2 is fixed with a liquid inlet box 1, and the inside of the liquid inlet box 1 is fixed with a connecting pipe 27, and the connecting pipe 27 extends out of the inside of the liquid inlet box 1, and the mixing box 2 is fixed with a liquid inlet box 1. A through hole is provided inside the mixing box 2, and a connecting pipe 27 passes through the inside of the through hole. The connecting pipe 27 extends to the inner side of the guide seat B23, and the inside of the guide seat B23 is connected with the inside of the liquid inlet box 1 through the connecting pipe 27; a rotating ring 26 is fixed to the top of the guide seat B23, a rotating groove A is provided at the top of the inner wall of the mixing box 2, and the rotating groove A is rotatably connected to the rotating ring 26, an annular seat 21 is fixed to the outside of the guide seat A6, a rotating groove B is provided on the inner side wall of the mixing box 2, and the rotating groove B is rotatably connected to the annular seat 21, a groove is provided inside the annular seat 21, and a ball 25 is rotatably connected inside the groove, and the bottom end of the ball 25 fits with the bottom end of the rotating groove B.

[0033] In this embodiment, when the inner wall of the mixing box 2 needs to be cleaned, the electric telescopic rod 20 is started to drive the moving column 13 to rise as a whole, so that the block 19 is engaged with the slot 24, and the motor 9 is started so that the scraper B8 drives the guide seat A6 to rotate as a whole. The cleaning liquid is connected to the liquid inlet box 1, and the cleaning liquid enters the interior of the guide seat A6 through the guide seat B23 and rotates through the nozzle 22 to spray toward the inner wall of the mixing box 2, so that the cleaning liquid is evenly sprayed on the outer wall of the mixing box 2. After the spraying is completed, the scraper A7 contacts the inner wall of the mixing box 2. With the guiding action of the connecting rod B18, the stability of the scraper A7 during rotation is increased, so that the scraper A7 can rotate and clean the inner wall of the mixing box 2 above the scraper B8, and the scraper B8 cleans the inner wall of the lower half. The cleaned liquid is discharged through the discharge pipe, and there is no need for manual cleaning by the staff, thereby improving the safety of the overall cleaning of the mixing box 2, avoiding the corrosive effects of sulfuric acid and potassium permanganate solution on the staff, improving the cleaning efficiency inside the mixing box 2, and avoiding the occurrence of the next set of test data being affected by inadequate cleaning.

[0034] Embodiment 2

[0035] This embodiment is different from the first embodiment. In order to avoid harm to the staff during the detection process, the specific Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown:

[0036] A feed seat 3 with a cover is fixedly provided on one side of the top of the mixing box 2, a feed port is provided on the outer surface of the mixing box 2, the feed seat 3 with a cover and the feed port are on the same vertical plane, and a separation mechanism 4 is provided on the top of the mixing box 2; the separation mechanism 4 includes a receiving groove provided on the inner wall of the mixing box 2, and the receiving groove is located on one side of the feed port, the receiving groove is connected to the inside of the feed port, a spring 403 is fixed on one side of the inside of the receiving groove, and a handle 401 is fixed on the other side of the spring 403, and the handle 401 extends to the outside of the receiving groove, and a partition plate 402 is fixed on the side of the handle 401 away from the spring 403, and the partition plate 402 extends into the inside of the feed port, and the partition plate 402 Fitting with the side wall of the feed port; a connecting rod A15 is fixed to the outer side of the connecting column 14, and a stirring blade 11 is fixed to the outer side of the connecting rod A15, and the connecting rods A15 are arranged in a cross shape on the outer side of the connecting column 14; a sulfuric acid containing box 5 is arranged on one side of the mixing box 2, and a sealing cover is threadedly connected to the top of the sulfuric acid containing box 5, a liquid inlet is opened on one side of the inner wall of the mixing box 2, and a solenoid valve is arranged inside the liquid inlet; a connecting groove 16 is opened at the top of the inner wall of the mixing box 2, and a rubber seal 28 is arranged inside the connecting groove 16, and a material guide funnel 12 is fixed to the top of the inside of the mixing box 2, and the material guide funnel 12 and the connecting groove 16 and the rubber seal 28 are on the same vertical plane.

[0037] In this embodiment, when it is necessary to detect the active oxygen content of the fruit and vegetable washing salt, the handle 401 is pulled to add a certain amount of fruit and vegetable washing salt and deionized water into the interior of the covered feeding seat 3. After the deionized water fully moistens the fruit and vegetable washing salt, the handle 401 is released, so that the partition plate 402 is pushed toward the feeding port under the elastic action of the spring 403, the feeding port is closed, and the solenoid valve of the liquid inlet is opened, so that the quantitative sulfuric acid solution in the sulfuric acid holding box 5 slides along the inner wall of the mixing box 2 to the interior of the mixing box 2, mixes with the fruit and vegetable washing salt, and enters the interior of the mixing box 2. The lid of the covered feeding seat 3 is opened, and after adding the quantitative defoaming agent, the lid is closed, and the handle 401 is pulled. , so that the quantitative defoaming agent on the handle 401 falls into the interior of the mixing box 2 to reduce or eliminate foam. Through the connecting groove 16, the test tube of the potassium permanganate solution can be passed through the rubber seal 28, so that the potassium permanganate solution enters the interior of the mixing box 2 through the material guide funnel 12. Since the material guide funnel 12 is funnel-shaped, splashing of the reaction solution can also be avoided. By starting the motor 9 to drive the scraper B8 and the connecting column 14 to rotate, the dissolution efficiency of the sulfuric acid solution for the fruit and vegetable washing salt can be accelerated, and the efficiency of the mixing reaction of the dissolved solution and the potassium permanganate solution can also be accelerated. Since the mixing box 2 is in a closed state during the whole process, splashing of the solution during the operation can be avoided to cause unnecessary harm to the staff.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stirring device for detecting the active oxygen content of fruit and vegetable washing salt, comprising a stirring box (2), characterized in that: A feed seat (3) with a cover is fixedly provided on one side of the top of the mixing box (2), a feed port is provided on the outer surface of the mixing box (2), the feed seat (3) with a cover and the feed port are on the same vertical plane, a separation mechanism (4) is provided at the top of the mixing box (2), a scraper B (8) is rotatably connected to the bottom of the mixing box (2), a mounting groove A is provided at the bottom of the inner wall of the mixing box (2), and a motor (9) is provided inside the mounting groove A, the output shaft of the motor (9) is fixedly connected to the bottom end of the scraper B (8), a connecting column (14) is fixed at the top of the scraper B (8), a mounting groove B is provided inside the connecting column (14), and an electric telescopic rod (20) is fixed to the bottom end of the inner side of the mounting groove B, the electric A moving column (13) is fixed to the top of the movable telescopic rod (20), and scrapers A (7) are fixed to both sides of the moving column (13); a clamping block (19) is fixed to the top of the moving column (13); a guide seat B (23) is rotatably connected to the top of the mixing box (2), and a guide seat A (6) is fixed to the outside of the guide seat B (23); a nozzle (22) is arranged on the outside of the guide seat A (6); the inside of the guide seat B (23) is connected to the inside of the guide seat A (6); a clamping groove (24) is opened at the bottom of the guide seat B (23); an installation groove C is arranged inside the inner wall of the mixing box (2), and a heating plate (10) is arranged inside the installation groove C; and a discharge pipe is arranged at the bottom of one side of the mixing box (2).

2. A stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 1, characterized in that: The separation mechanism (4) comprises a receiving groove arranged on the inner wall of the mixing box (2), and the receiving groove is located on one side of the feed port, the receiving groove is connected to the inside of the feed port, a spring (403) is fixed on one side of the inside of the receiving groove, and a handle (401) is fixed on the other side of the spring (403), and the handle (401) extends to the outside of the receiving groove, and a partition plate (402) is fixed on the side of the handle (401) away from the spring (403), and the partition plate (402) extends into the inside of the feed port, and the partition plate (402) is in contact with the side wall of the feed port.

3. A stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 1, characterized in that: A connecting rod A (15) is fixed on the outside of the connecting column (14), and a stirring blade (11) is fixed on the outside of the connecting rod A (15). The connecting rods A (15) are arranged in a cross shape on the outside of the connecting column (14).

4. A stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 3, characterized in that: The outer side of the scraper B (8) is in contact with the inner wall of the mixing box (2), the bottom end of the scraper B (8) is in contact with the bottom end of the inside of the mixing box (2), and one side of the scraper A (7) is in contact with the inner wall of the mixing box (2).

5. The stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 1, characterized in that: A connecting rod B (18) is fixed to the bottom end of the scraper A (7), a connecting rod B (18) is provided inside the scraper B (8), and the connecting rod B (18) is slidably connected to the connecting groove (17).

6. A stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 5, characterized in that: The size of the connecting groove (17) is matched with the size of the connecting rod B (18), the size of the clamping groove (24) is matched with the size of the clamping block (19), and the clamping groove (24) and the clamping block (19) are on the same vertical plane.

7. The stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 1, characterized in that: A liquid inlet box (1) is fixed at the top of the mixing box (2), and a connecting pipe (27) is fixed inside the liquid inlet box (1), the connecting pipe (27) extends out of the interior of the liquid inlet box (1), a through hole is provided inside the mixing box (2), the connecting pipe (27) passes through the interior of the through hole, the connecting pipe (27) extends to the inner side of the guide seat B (23), and the interior of the guide seat B (23) is connected to the interior of the liquid inlet box (1) through the connecting pipe (27).

8. The stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 1, characterized in that: A rotating ring (26) is fixed to the top of the guide seat B (23), a rotating groove A is provided at the top of the inner wall of the mixing box (2), and the rotating groove A is rotatably connected to the rotating ring (26), an annular seat (21) is fixed to the outer side of the guide seat A (6), a rotating groove B is provided on the inner wall of the mixing box (2), and the rotating groove B is rotatably connected to the annular seat (21), a groove is provided inside the annular seat (21), and a ball (25) is rotatably connected inside the groove, and the bottom end of the ball (25) is in contact with the bottom end of the rotating groove B.

9. The stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 1, characterized in that: A sulfuric acid containing box (5) is arranged on one side of the mixing box (2), a sealing cover is threadedly connected to the top of the sulfuric acid containing box (5), a liquid inlet is opened on one side of the inner wall of the mixing box (2), and a solenoid valve is arranged inside the liquid inlet.

10. The stirring device for detecting active oxygen content in fruit and vegetable washing salt according to claim 1, characterized in that: A connecting groove (16) is provided at the top of the inner wall of the mixing box (2), and a rubber seal (28) is provided inside the connecting groove (16). A material guide funnel (12) is fixed at the top of the inner wall of the mixing box (2), and the material guide funnel (12), the connecting groove (16) and the rubber seal (28) are on the same vertical plane.

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