Disinfectant concentration automatic detection device for recycling of endoscope cleaning and disinfecting machine

Abstract

An automatic disinfectant concentration detection device for recycling of an endoscope cleaning and disinfecting machine relates to the field of endoscope cleaning and disinfecting machines and is provided with a closed detection box, a detection table plate is arranged in the detection box, a detection lifting port is formed in the middle of the detection table plate, a liquid storage tank is arranged in the detection lifting port, and a lifting driving device is arranged on the detection table plate. A driven detection roller and a driving detection roller are arranged on the detection bedplate, a driving motor is mounted on the detection bedplate below the driving detection roller, and a detection test paper roll is arranged on the driven detection roller; a liquid injection pump and a liquid return pump are arranged, an inlet of the liquid injection pump and an outlet of the liquid return pump penetrate out of the detection box through a liquid inlet pipe and a liquid return pipe, and an outlet of the liquid injection pump and an inlet of the liquid return pump are communicated with the bottom of the liquid storage tank; a detection test paper image acquisition device is arranged on the detection bedplate and is connected with an image processing device. The device has the advantages of full-automatic detection in a closed environment, accurate concentration detection data, high consistency, automatic storage of test results, easiness in result tracing and the like.

Description

Technical Field

[0001] The invention relates to the field of endoscope cleaning and disinfecting machines, and in particular to an automatic detection device for the concentration of disinfectant liquid circulated in an endoscope cleaning and disinfecting machine. Background Art

[0002] Peracetic acid is a strong oxidant with the characteristics of rapid sterilization, and is not affected by temperature, humidity and organic matter; due to its strong ability to remove bacterial biofilms, it is widely used in the field of endoscope disinfection. When the existing endoscope cleaning and disinfection machine uses recyclable peracetic acid disinfectant to disinfect the endoscope, the endoscope in the disinfection tank of the endoscope cleaning and disinfection machine is first washed twice with clean water and enzymes, and the water is drained, and then 15L of peracetic acid disinfectant is drawn from the liquid storage barrel and pumped into the disinfection tank to soak the endoscope; after the soaking and disinfection is completed, the peracetic acid disinfectant is recovered into the liquid storage barrel for recycling. The concentration of peracetic acid disinfectant used for endoscope disinfection is about 2500 mg / L. The concentration of peracetic acid disinfectant during use is required to be higher than 1000 mg / L. Peracetic acid is consumed each time it is used. In addition, it cannot be completely emptied during drainage, and there is residue, and the residual amount cannot be estimated. The disinfectant will be diluted each time the endoscope is washed. In addition, the disinfectant itself is unstable, and the concentration will decrease with time and environmental factors. Therefore, its concentration must be measured each time it is cleaned to see if it is qualified.

[0003] At present, the concentration of disinfectant recycled by endoscope cleaning and disinfection machines is often tested by manual testing. Specifically, after the test personnel take a sample of the peracetic acid disinfectant in the storage barrel, they hold a strip of test paper and insert the test end into the sampled peracetic acid disinfectant for 2 seconds. After shaking off the excess solution on the test paper, the test paper reacts for about 15 seconds, and then the result is compared with the concentration color card to read the result. The existing detection method has the following defects: 1. Manual open operation wastes labor costs and is harmful to the test personnel and the environment; 2. The comparison results rely on the human eye's sense of color, and the concentration judgment error is large and the consistency is poor; 3. The test paper cannot be stored for a long time after testing, and the comparison results need to be recorded manually, which is not easy to trace the results. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art and to provide an automatic detection device for the concentration of disinfectant that can be circulated in an endoscope cleaning and disinfecting machine, which can perform fully automatic detection in a closed environment, with accurate concentration detection data and high consistency; the test results are automatically saved and the results can be easily traced.

[0005] The technical solution adopted by the present invention to solve the above-mentioned deficiencies in the prior art is: An automatic detection device for the concentration of disinfectant circulated in an endoscope cleaning and disinfecting machine is provided with a closed detection box, characterized in that a detection table is provided in the detection box, a detection lifting port is provided in the middle of the detection table and is connected up and down, a liquid storage tank which can slide up and down and is open at the upper end is provided in the detection lifting port, a lifting drive device for driving the liquid storage tank to move up and down is provided on the detection table, a driven detection roller is provided on the detection table on the left side of the detection lifting port, and a freely rotatable active detection roller is provided on the detection table on the right side of the detection lifting port, a driving motor connected to the active detection roller is installed on the detection table below the active detection roller, a detection test paper roll is provided on the driven detection roller, and the detection test paper roll The test paper tape is rolled up, and the test paper tape includes a connecting tape and a strip of test paper. The non-detection ends of the test paper are connected to the connecting tape at equal intervals. The starting end of the test paper roll is connected to the active detection roller after passing above the detection lifting port. When the lifting drive device drives the liquid storage tank to rise, the detection end of a test paper enters the liquid storage tank. A liquid injection pump and a liquid return pump are provided. The inlet of the liquid injection pump and the outlet of the liquid return pump are respectively provided with a liquid inlet pipe and a liquid return pipe. The liquid inlet pipe and the liquid return pipe pass through the outside of the detection box. The outlet of the liquid injection pump and the inlet of the liquid return pump are connected to the bottom of the liquid storage tank through the liquid injection pipe and the recovery pipe respectively. A test paper image acquisition device is provided on the detection table.

[0006] The image acquisition device described in the present invention is connected with a data line, and the data line passes through the detection box and is connected to the image processing device. The image data of the detection end of the detection test paper collected by the image acquisition device is sent to the image processing device via the data line. The image processing device can display the image or convert it into a corresponding RGB array, perform image processing and data comparison, output and record the results, and when the peracetic acid concentration is low, it is prompted to replace the disinfectant.

[0007] The structure of the lifting drive device described in the present invention is as follows: a lifting screw sleeve is provided on the liquid storage tank, a motor is installed below the detection table, and a screw rod that cooperates with the lifting screw sleeve is connected to the output shaft of the motor. The motor drives the screw rod to rotate forward or reversely, which can drive the lifting screw sleeve and the liquid storage tank to move up and down. The lifting screw sleeve is arranged in the center of the liquid storage tank, and the lower end of the lifting screw sleeve passes through the bottom of the liquid storage tank and cooperates with the screw rod below; the lifting is more stable.

[0008] The structure of the test paper roll of the present invention is: a cylindrical mounting shaft core is provided, and the test paper tape is wound on the mounting shaft core to form the test paper roll. The test paper tape is formed by removing a part of the base paper tape at equal distances by a removal method, and the upper continuous part of the base paper tape is a connecting belt, and the lower part is a rectangular paper strip parallel to each other, and a peroxidase reactant for detecting the concentration of peracetic acid is provided at the lower end of the rectangular paper strip to form the test paper. Alternatively, the test paper can be directly pasted on the paper tape.

[0009] The present invention is further improved in that a micro flow meter is installed on the injection pipe, which can accurately measure the amount of peracetic acid disinfectant sampled and control the amount of test liquid extracted by the injection pump.

[0010] The present invention is further improved in that a desolventizing blower is provided on the detection table at the rear side of the liquid storage tank, and the air outlet of the desolventizing blower is opposite to the middle of the liquid storage tank, and the upper side of the air outlet is located above the detection end of the detection test paper (1-3 cm). After the liquid storage tank falls, the desolventizing blower can blow the detection end of the detection test paper located above the liquid storage tank to shake, remove excess solution, and quickly dry, so that the detection can be completed quickly, and the detection effect is better.

[0011] The present invention is further improved, the detection lifting port is a rectangular port arranged in the front-to-back direction, the liquid storage tank is a rectangular tank matched with the detection lifting port, and the distance between the front side wall of the liquid storage tank and the detection test paper is not less than 3 times, preferably 4-5 times, the distance between the lower end of the detection test paper and the upper side of the detection end. Excess solution is blown into the liquid storage tank, and it is not easy to pollute the interior of the detection box.

[0012] The present invention is further improved, wherein an input guide roller is provided on one side of the active detection roller, an output guide roller is provided on one side of the driven guide roller, and the starting end of the detection test paper roll is connected to the active detection roller after being guided by the output guide roller and the input guide roller in sequence. This allows the front and rear positions of the detection test paper to remain unchanged during multiple detection processes, thereby improving detection accuracy.

[0013] The present invention is further improved by providing a test paper position detection device. The test paper position detection device controls the start and stop of the drive motor by obtaining the position of the test paper, thereby accurately controlling the position of the test paper matched with the liquid storage tank. The test paper position detection device is a proximity position sensor.

[0014] When the present invention is used, the liquid inlet pipe and the liquid return pipe are connected to the peracetic acid disinfectant storage barrel of the endoscope cleaning and disinfecting machine. During each detection, the driving motor drives the active detection roller to rotate, and a detection test paper on the detection test paper strip is moved to the top of the liquid storage tank. The injection pump pumps a certain amount of peracetic acid disinfectant into the liquid storage tank, and the lifting drive device drives the liquid storage tank to rise, and the detection end of the detection test paper above the liquid storage tank is immersed in the peracetic acid disinfectant in the liquid storage tank; after an interval of two seconds, the lifting drive device drives the liquid storage tank to descend, and the liquid return pump pumps the peracetic acid disinfectant in the liquid storage tank back to the liquid storage barrel. After the lower end of the detection test paper is separated from the liquid storage tank for 10-15 seconds, the image acquisition device collects the image of the detection test paper (detection end), and sends the image data to the image processing device. The image processing device converts the image of the detection end of the detection test paper into a corresponding RGB array, compares it with the RGB array of the pre-stored concentration color card, obtains the corresponding peracetic acid concentration, and records the relevant data. When the concentration is lower than the set value, it is prompted to change the disinfectant.

[0015] The invention can automatically detect the concentration of disinfectant circulating in the endoscope cleaning and disinfecting machine, thereby reducing labor costs, eliminating the need for open manual sampling and recycling, avoiding operators from contacting peracetic acid, and reducing hazards to operators and the environment; an image processing device processes and compares the collected images, thereby reducing human sensory judgment errors; and data in the detection process are automatically saved and can be traced back at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure after removing the detection box.

[0018] Figure 3 for Figure 2 Schematic diagram of the structure viewed from above.

[0019] Figure 4 for Figure 2 Schematic diagram of the three-dimensional structure from another perspective.

[0020] Figure 5 It is a schematic diagram of the structure of the test paper tape in the present invention.

[0021] Among them, the accompanying drawings are marked as follows: 1. detection box, 2. return liquid pipe, 3. liquid inlet pipe, 4. recovery pipe, 5. motor, 6. screw, 7. connecting frame, 8. driving motor, 9. reducer, 10. active detection roller, 11. detection table, 12. input guide roller, 13. detection test paper, 14. connecting belt, 15. liquid storage tank, 16. lifting screw sleeve, 17. detection test paper position detection device, 18. output guide roller, 19. driven detection roller, 20. detection test paper roll, 21. return liquid pump, 22. injection pump, 23. injection pipe, 24. micro flowmeter, 25. solution removal fan, 26. image acquisition device, 27. peroxidase reactant (detection end). DETAILED DESCRIPTION

[0022] like Figure 1-Figure 5 The automatic detection device for the concentration of disinfectant circulated in the endoscope cleaning and disinfecting machine shown in the figure is provided with a closed detection box 1, a detection table 11 is provided in the middle of the detection box 1 in the vertical direction, a detection lifting port is provided in the middle of the detection table 11 in the left and right direction, and a liquid storage tank 15 which can slide up and down and is open at the upper end is provided in the detection lifting port, and a lifting drive device for driving the liquid storage tank to move up and down is provided on the lower side of the detection table 11, such as Figure 2As shown, the structure of the lifting drive device is as follows: a lifting screw sleeve 16 is provided on the liquid storage tank 15, and a motor 5 is installed on the lower side of the detection table 11 through a connecting frame 7. The motor 5 is a stepping motor, and the output shaft of the motor 5 is connected with a screw 6 that cooperates with the lifting screw sleeve 16; it can be seen from the figure that the lifting screw sleeve 16 is arranged in the center of the liquid storage tank 15, and the lower end of the lifting screw sleeve 16 passes through the bottom of the liquid storage tank and cooperates with the screw 6 below; the lifting is more stable. The motor drives the screw to rotate forward or reversely, which can drive the lifting screw sleeve and the liquid storage tank to move up and down. A driven detection roller 19 that can rotate freely is provided on the detection table 11 on the left side of the detection lifting port through a bearing, and an active detection roller 10 that can rotate freely is provided on the detection table 11 on the right side of the detection lifting port through a bearing. A driving motor 8 connected to the active detection roller 10 is installed on the detection table 11 below the active detection roller 10. It can be seen from the figure that the driving motor 8 is also installed on the lower side of the detection table 11 through a connecting frame, and the output shaft of the driving motor is connected to the active detection roller 10 through a reducer 9. The driven detection roller 19 is provided with a detection test paper roll 20, which is rolled up by a detection test paper tape, and the detection test paper tape includes a connecting tape 14 and a strip of detection test paper 13, the detection test papers 13 are arranged parallel to each other and at equal intervals, the non-detection end of the detection test paper 13 is connected to the connecting tape 14, and the detection end droops naturally; the starting end (outer end) of the detection test paper roll 20 is connected to the active detection roller 10 after passing above the detection lifting port, and when the lifting drive device drives the liquid storage tank to rise, the detection end of a detection test paper 13 can enter the liquid storage tank; a liquid injection pump 22 and a liquid return pump 21 are provided on the lower side of the detection table 11, and a liquid inlet pipe 3 and a liquid return pipe 2 are respectively provided on the inlet of the liquid injection pump 22 and the outlet of the liquid return pump 21, and the liquid inlet pipe 2 and the liquid return pipe 3 are sealed between the detection box and pass through to the detection Outside the box, the outlet of the injection pump 22 and the inlet of the return pump 21 are connected to the bottom of the liquid storage tank 15 through the injection pipe 23 and the recovery pipe 4 respectively; an image acquisition device 26 opposite to the detection end of a test paper 13 is provided on the detection table on the right side of the liquid storage tank 15, and the image acquisition device 26 is an industrial camera, and a data line is connected to the image acquisition device 26, and the data line passes through the detection box and is connected to the image processing device; the image data of the detection end of the test paper collected by the image acquisition device 26 can be sent to the image processing device arranged outside the detection box 1, and the image processing device can display and / or convert the photo into a corresponding RGB array, perform image processing and data comparison, output and record the results, and when the peracetic acid concentration is detected to be low, the alarm can be used to prompt the replacement of the disinfectant. The image processing device is an electronic product in the prior art that contains a processing system that can convert and compare RGB arrays of pictures.

[0023] The structure of the test paper roll in this embodiment is: a cylindrical mounting shaft core is provided, and the test paper tape is wound on the mounting shaft core to form the test paper roll. The test paper tape is formed by removing a portion of the base paper tape at equal distances by a removal method, and forming a fence-type base paper tape. The upper continuous portion of the fence-type base paper tape is a connecting strip 14, and the lower portion is a rectangular paper strip parallel to each other. The peroxidase reactant 27 for detecting the concentration of peracetic acid is provided at the lower end of the rectangular paper strip to form the test paper, or the test paper 13 is directly pasted on the paper tape.

[0024] As a further improvement, a micro flow meter is installed on the injection tube; the amount of peracetic acid disinfectant sampled can be accurately measured, and the amount of test liquid drawn by the injection pump can be controlled.

[0025] Further improvement, a desolventizing blower 25 is provided on the detection table 11 at the rear side of the liquid storage tank 15, and the air outlet of the desolventizing blower 25 is opposite to the middle part of the liquid storage tank in the left-right direction, and the upper side of the wind column blown out from the air outlet is located 1-3 cm above the detection end of the detection test paper; the air outlet is provided with a funnel-shaped wind collecting cover, which can concentrate the wind generated by it into a fine wind beam. After the liquid storage tank falls, the desolventizing blower can blow the detection end of the detection test paper located above the liquid storage tank to tilt and shake forward, remove excess solution, and improve the detection speed. The detection lifting port is a rectangular port set in the front and back directions, and the liquid storage tank 15 is a rectangular slot matched with the detection lifting port. The distance between the front side wall of the liquid storage tank 15 and the detection test paper is not less than 3 times, preferably 4-5 times, of the distance between the lower end of the detection test paper and the upper side of the detection end (peroxidase reactant); the excess solution is blown into the liquid storage tank and will not pollute the inside of the detection box. An input guide roller 12 is provided on one side of the active detection roller 10, and an output guide roller 18 is provided on one side of the driven guide roller 19. Both the input guide roller 12 and the output guide roller 18 are composed of two freely rotatable single guide rollers arranged parallel to each other. The starting end of the detection test paper roll starts from the driven guide roller side, and is guided by the output guide roller 18 and the input guide roller 12 in sequence and then connected to the active detection roller 10. The front and rear positions of the detection test paper do not change during multiple detection processes, thereby improving the detection accuracy.

[0026] As a further improvement, a test paper position detection device 17 is provided. In this embodiment, the test paper position detection device 17 is a proximity position sensor. The test paper position detection device 17 controls the start and stop of the drive motor by obtaining the position of the test paper 13, thereby accurately controlling the position of the test paper matched with the liquid storage tank. The motor, drive motor, test paper position detection device, liquid return pump, liquid injection pump, micro flowmeter, solution removal fan and image acquisition device are all connected to the controller, and the controller is used to control the working state of the above devices.

[0027] When the present invention is used, the liquid inlet pipe and the liquid return pipe are connected to the peracetic acid disinfectant liquid storage barrel of the endoscope cleaning and disinfecting machine. During each detection, the driving motor is controlled to drive the active detection roller to rotate, and a detection test paper on the detection test paper belt is moved to the top of the liquid storage tank. The injection pump pumps a certain amount of peracetic acid disinfectant that can cover the detection end of the detection test paper into the liquid storage tank, and the lifting drive device drives the liquid storage tank to rise, and the detection end of the detection test paper above the liquid storage tank is immersed in the peracetic acid disinfectant in the liquid storage tank; after an interval of two seconds, the lifting drive device drives the driving liquid storage tank to descend to the bottom of the detection test paper, and the liquid removal fan blows the detection end of the detection test paper to tilt and shake forward to remove excess solution, and the liquid return pump pumps the peracetic acid disinfectant in the liquid storage tank back to the liquid storage barrel. After the lower end of the test paper is separated from the liquid storage tank for 10-15 seconds and fully reacted, the driving motor is controlled to drive the active detection roller to rotate, and the test paper that has completed the detection is moved to the front side of the image acquisition device, and the next test paper on the test paper belt is moved to the top of the liquid storage tank to be used for the next detection; the image acquisition device collects the image of the detection end of the test paper, and sends the image data to the image processing device. The image processing system of the image processing device converts the image of the detection end of the test paper into a corresponding RGB array, compares it with the RGB array of the pre-stored concentration color card, obtains the corresponding peracetic acid concentration, and records the relevant data. When the concentration is lower than the set value, it prompts to replace the disinfectant. The image processing device can also display the image of the test paper, and the manual judgment is compound.

[0028] The invention can automatically detect the concentration of disinfectant circulating in the endoscope cleaning and disinfecting machine, thereby reducing labor costs, eliminating the need for open manual sampling and recycling, avoiding operators from contacting peracetic acid, and reducing hazards to operators and the environment; an image processing device processes and compares the collected images, thereby reducing human sensory judgment errors; and data in the detection process are automatically saved and can be traced back at any time.

Claims

1. An automatic detection device for the concentration of disinfectant recycled by an endoscope cleaning and disinfecting machine, provided with a closed detection box, characterized in that A testing table is provided in the testing box, a testing lifting port which passes through the testing table is provided in the middle of the testing table, a liquid storage tank which can slide up and down and is open at the upper end is provided in the testing lifting port, a lifting driving device which drives the liquid storage tank to move up and down is provided on the testing table, a driven testing roller is provided on the testing table on the left side of the testing lifting port, a freely rotatable active testing roller is provided on the testing table on the right side of the testing lifting port, a driving motor connected to the active testing roller is installed on the testing table below the active testing roller, a testing paper roll is provided on the driven testing roller, the testing paper roll is rolled up by a testing paper tape, and the testing paper tape includes a continuous The non-detection ends of the test paper are connected to the connecting belt at equal intervals. The starting end of the test paper roll is connected to the active detection roller after passing above the detection lifting port. When the lifting drive device drives the liquid storage tank to rise, the detection end of a test paper enters the liquid storage tank. A liquid injection pump and a liquid return pump are provided. The inlet of the liquid injection pump and the outlet of the liquid return pump are respectively provided with a liquid inlet pipe and a liquid return pipe. The liquid inlet pipe and the liquid return pipe pass through the outside of the detection box. The outlet of the liquid injection pump and the inlet of the liquid return pump are connected to the bottom of the liquid storage tank through the liquid injection pipe and the recovery pipe respectively. A test paper image acquisition device is provided on the detection table.

2. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 1 is characterized in that: The image acquisition device is connected with a data line, and the data line passes through the detection box and is connected with the image processing device.

3. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 1 is characterized in that: The structure of the lifting drive device is as follows: a lifting screw sleeve is arranged on the liquid storage tank, a motor is installed under the detection table, and a screw rod matching the lifting screw sleeve is connected to the output shaft of the motor.

4. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 1 is characterized in that: The structure of the test paper roll is as follows: a cylindrical mounting shaft core is provided, and the test paper tape is wound on the mounting shaft core to form the test paper roll.

5. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 1 is characterized in that: A micro flow meter is installed on the liquid injection pipe.

6. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 1 is characterized in that: A desolventizing fan is arranged on the detection table at the rear side of the liquid storage tank, the air outlet of the desolventizing fan is opposite to the middle of the liquid storage tank, and the upper side of the air outlet is located above the detection end of the detection test paper.

7. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 6 is characterized in that: The detection lifting port is a rectangular port arranged in the front-to-back direction, and the liquid storage tank is a rectangular tank matched with the detection lifting port. The distance between the front side wall of the liquid storage tank and the detection test paper is not less than 3 times the distance between the lower end of the detection test paper and the upper side of the detection end.

8. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 1, characterized in that: An input guide roller is arranged on one side of the active detection roller, and an output guide roller is arranged on one side of the driven guide roller. The starting end of the detection test paper roll is connected to the active detection roller after being guided by the output guide roller and the input guide roller in sequence.

9. The automatic detection device for the concentration of disinfectant recycled by the endoscope cleaning and disinfecting machine according to claim 1, characterized in that: A test paper position detection device is provided.

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