Device for cleaning waterway of comprehensive oral treatment table

Abstract

The utility model discloses a device for cleaning a waterway of a comprehensive oral treatment table, which comprises a water source (10), an air source (20), a first three-way electromagnetic valve (SV1) and a controller (30), and the difference between the pressure of the air source and the pressure of the water source is about 1.0-3.0 kg / cm < 2 >; the water source is connected with a first inlet of the first three-way electromagnetic valve (SV1), the air source is connected with a second inlet of the first three-way electromagnetic valve, and an outlet of the first three-way electromagnetic valve is connected with a waterway of the oral cavity comprehensive treatment table; the controller is electrically connected with the first three-way electromagnetic valve and used for controlling the first three-way electromagnetic valve to alternately open the water source and the air source, and therefore the air source and the water source are used for alternately cleaning the oral cavity comprehensive treatment table waterway in a pulsating mode. The device is simple, convenient, high in operability, good in effect, low in cost and capable of keeping no biofilm deposition on the pipe wall of the waterway for a long time, the waterway is clean, bacterial colonies of water for treatment are effectively reduced, and the water reaches the standard of safe water use.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, and more specifically to a device for cleaning a water channel of a comprehensive oral treatment table. Background Art

[0002] The dental unit water lines (DUWLs) are an important part of the dental unit water line, which is used to supply water to other equipment such as the three-way gun, dental handpiece, ultrasonic dental scaler, etc. With the rapid development of my country's health care industry, the dental unit water line has been widely used. At the same time, the problem of cross infection during oral diagnosis and treatment has also attracted more and more attention from dental medical staff and the public. Among them, microbial contamination from the water lines of the dental unit water line is a major risk factor.

[0003] The water circuit structure of the dental comprehensive treatment table is complex and difficult to disassemble for cleaning and disinfection. Therefore, it is easily contaminated by microorganisms during use. It is generally believed that microorganisms attach to the inner wall of the narrow plastic tube of the dental comprehensive treatment table water circuit system, and continue to thicken through their own reproduction and the adhesion of planktonic microorganisms, forming a biofilm - soft and sticky dirt. The biofilm that has accumulated to a certain extent can fall off completely or partially under the flushing of the water flow, and directly enter the water circuit of the mobile phone with the water flow. The dirt enters the patient's mouth with the cooling water, or forms an aerosol through the turbine and diffuses in the air, and enters the human body through the respiratory tract (Ping Yifan et al., "Microbial Contamination and Prevention of Water Circuits of Dental Comprehensive Treatment Tables", Stomatology, 2016, 36 (7)). In response to the problem of microbial contamination of the water circuit of the dental comprehensive treatment table, such as excessive colony counts, most existing technologies use chemical disinfection methods to disinfect the water circuit of the dental comprehensive treatment table. For example, Han Yi et al. studied the disinfection effects of ozone, sodium hypochlorite, hydrogen peroxide, and hydrogen peroxide silver ion disinfectants on the water channels of comprehensive oral treatment tables in the "Clinical Study on the Disinfection Effect of Water Channels of Comprehensive Oral Treatment Tables" ("Diet and Health" February 2016 (Part 2), Vol. 3, No. 4); Sun Rong et al. used ozone aqueous solution to treat the water channels of comprehensive oral treatment tables in the article "Disinfection Effect of Ozone Aqueous Solution on Pipelines of Comprehensive Oral Treatment Tables" ("Oral Medicine", Vol. 40, No. 6, June 2020); the application number is 202210348825.7 and the utility model name is "A Method for Preventing and Controlling Microbial Contamination of Water Channels and Pipelines of Comprehensive Oral Treatment Tables", in which disinfectants such as chlorine-containing disinfectants, hydrogen peroxide, hydrogen peroxide silver ions, electrochemically activated water, ozone, etc. are used for microbial prevention and control.

[0004] These existing methods have certain effects, but they all have obvious shortcomings. For example, in actual use, not only does it increase the cost of using chemical disinfectants, but it also faces corrosion, residue and environmental pollution of disinfectants on equipment parts; at the same time, the actual operation is relatively complicated, time-consuming and labor-intensive, and increases a lot of labor costs, and the specific implementation is difficult. The inventor has found in many years of practice that many treatment tables are currently equipped with disinfection facilities for mobile phone pipelines, but the actual utilization rate is extremely low, and many are just decorations, idle and useless, which increases the purchase cost of equipment in vain, resulting in great waste. Utility Model Content

[0005] The inventors of the present invention have found in the long-term maintenance and servicing of the comprehensive treatment table that biofilm deposition is easily formed in the comprehensive treatment table, especially in the tail pipe of the treatment mobile phone, which can lead to blockage of the pipeline, the quick-release joint pipeline, and the mobile phone waterway, thereby causing the mobile phone to have no cooling water. The fundamental reason is that when the comprehensive treatment table is not in use, there is water in the waterway of the comprehensive treatment table, especially in the slender mobile phone tail pipe waterway, and the end of the mobile phone tail pipe is open. This part of water becomes dead water when idle for a long time. Dead water is a necessary condition for the growth of bacteria and the formation of biofilm. Over time, biofilm deposition occurs in the waterway of the comprehensive treatment table, especially on the inner wall of the mobile phone tail pipe, forming a large amount of dirt, which not only leads to excessive bacteria, but also in severe cases, the falling of biofilm dirt leads to blockage of pipelines, quick-release joints, and mobile phone waterways.

[0006] To this end, the utility model proposes a method and a device, which aims to solve the source of biofilm pollution, eliminate the breeding ground for biofilm, and inhibit the conditions for biofilm formation, thereby achieving the purpose of cleaning and preventing pollution.

[0007] More specifically, according to one aspect of the utility model, a method for cleaning a water channel of an oral comprehensive treatment table is provided, comprising:

[0008] 1) Connect the water circuit of the oral comprehensive treatment table to the air source and water source for cleaning, wherein the pressure of the air source is higher than the pressure of the water source, and the pressure difference is about 1.0-3.0 kg / cm 2 , preferably 2.0-3.0kg / cm 2 ;

[0009] 2) using the air source and the water source to alternately pulsate and clean the water path of the oral comprehensive treatment table; and

[0010] 3) The air source is used to flush and dry the water channel of the comprehensive oral treatment table, so as to keep the water channel of the comprehensive oral treatment table dry.

[0011] According to the implementation scheme of the utility model, in step 1), the pressure of the gas source is 3.0-5.5 kg / cm 2, for example 4.0-5.0kg / cm 2 , the water source pressure is 2.0-3.0kg / cm 2 , for example 2.0-2.5kg / cm 2 .

[0012] According to the implementation scheme of the utility model, in step 1), the air source is the therapeutic air source of the comprehensive oral treatment table, and the water source is the therapeutic water source of the comprehensive oral treatment table.

[0013] According to the implementation scheme of the utility model, in step 2), the water path of the comprehensive oral treatment table includes a mobile phone water path, a three-purpose gun water path, a dental scaler water path and a cup water injector water path.

[0014] According to the implementation scheme of the utility model, in step 2), the frequency of pulsating cleaning is 2-6 Hz / second, and the duration of pulsating cleaning is 40-60 seconds.

[0015] According to the implementation scheme of the utility model, in step 3), the time of gas flushing and drying is 20-40 seconds.

[0016] According to another aspect of the utility model, a device for cleaning the waterway of a comprehensive oral treatment table is provided, comprising a water source (10), an air source (20), a first three-way solenoid valve (SV1) and a controller (30), wherein the pressure of the air source is higher than the pressure of the water source, and the pressure difference is about 1.0-3.0 kg / cm 2 The water source (10) is connected to the first inlet of the first three-way solenoid valve (SV1), the air source (20) is connected to the second inlet of the first three-way solenoid valve (SV1), and the outlet of the first three-way solenoid valve (SV1) is connected to the water circuit of the oral comprehensive treatment table; the controller (30) is electrically connected to the first three-way solenoid valve (SV1) and is used to control the first three-way solenoid valve (SV1) to alternately open the water source (10) and the air source (20), so as to utilize the air source and the water source to alternately pulsate and clean the water circuit of the oral comprehensive treatment table.

[0017] According to an embodiment of the utility model, the device for cleaning the water path of the comprehensive oral treatment table further comprises a second three-way solenoid valve (SV2), the air source (20) is connected to the inlet of the second three-way solenoid valve (SV2), the first outlet of the second three-way solenoid valve (SV2) is connected to the second inlet of the first three-way solenoid valve (SV1), and the second outlet of the second three-way solenoid valve (SV2) is connected to the air path of the comprehensive oral treatment table.

[0018] According to an embodiment of the utility model, the device for cleaning the water channel of the oral comprehensive treatment table further comprises a work / cleaning switch (90), and a foot switch (40) and an air-controlled switch (50) arranged on the pipeline between the air source (20) and the inlet of the second three-way solenoid valve (SV2), and the work / cleaning switch (90) and the air-controlled switch (50) are electrically connected to the controller (30) respectively.

[0019] According to an embodiment of the utility model, the device for cleaning the water path of a comprehensive oral treatment table further comprises a check valve (60) arranged on a pipeline connecting the first inlet and the second inlet of the first three-way solenoid valve (SV1).

[0020] According to an embodiment of the present utility model, the controller (30) is a PLC control system.

[0021] According to an embodiment of the utility model, the device for cleaning the water circuit of the comprehensive oral treatment table further comprises a water-gas combination control valve or an independent control valve (70), the outlet of the first three-way solenoid valve (SV1) is connected to the water circuit of the comprehensive oral treatment table via the water-gas combination control valve or the independent control valve (70), and the second outlet of the second three-way solenoid valve (SV2) is connected to the gas circuit of the comprehensive oral treatment table via the water-gas combination control valve or the independent control valve (70).

[0022] According to the implementation scheme of the utility model, the gas source is the therapeutic gas source of the comprehensive oral treatment table, and the water source is the therapeutic water source of the comprehensive oral treatment table.

[0023] According to an embodiment of the utility model, the device for cleaning the water path of a comprehensive oral treatment table further comprises a power source (80) electrically connected to the controller (30).

[0024] The method / device of the utility model is simple, highly operable, and has good effects. It can make full use of the original components of the comprehensive oral treatment table to reduce the use cost, can keep the water pipe wall free of biofilm deposition for a long time, achieve water cleaning, and effectively reduce the bacterial colony of treatment water to meet the safety water use standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are exemplary implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1is a schematic flow chart of a method for cleaning a water channel of a comprehensive oral treatment table according to an embodiment of the utility model; and

[0027] Figure 2 It is a schematic diagram of the structure of a device for cleaning the water channel of a comprehensive oral treatment table according to an implementation scheme of the utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the utility model and the accompanying drawings 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 of 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.

[0029] Attached Figure 1 It is a schematic flow chart of a method for cleaning the waterway of a comprehensive oral treatment table according to an embodiment of the utility model. Figure 2 This is a schematic diagram of the structure of a device for cleaning the waterway of a comprehensive oral treatment table according to the embodiment of the utility model. Figure 1 and Figure 2 The utility model is described in more detail.

[0030] As shown in the figure, the device for cleaning the water circuit of the oral comprehensive treatment table according to the embodiment of the utility model may include a water source (10), an air source (20), a first three-way solenoid valve (SV1), a second three-way solenoid valve (SV2), a controller (30), a foot switch (40), an air-controlled switch (50), a check valve (60), a water-air combination control valve or an independent control valve (70), a power source (80), a work / cleaning switch (90), and pipelines connecting the various components, etc.

[0031] The water source (10) provides clean water for the cleaning device of the utility model to flush the waterway of the oral comprehensive treatment table. For example, the water source (10) can be clean water that meets the safety water standards. Similarly, the gas source (20) provides clean gas for the cleaning device of the utility model to flush and dry the waterway of the oral comprehensive treatment table. For example, the gas source (20) can be gas that meets the safety and cleanliness standards, such as clean compressed air or nitrogen.

[0032] The water circuit of the oral comprehensive treatment table is generally a plastic tube made of organic materials, such as polyvinylidene fluoride, polytetrafluoroethylene and other materials. The inventors found in the long-term work practice of maintaining the comprehensive treatment table that the pipeline can be cleaned alternately with water and air with a certain pressure. When there is a certain pressure difference between the water and the air, the pipe wall will cyclically expand and contract, causing the biofilm impurities deposited on the inner wall of the pipe to fall off and be discharged from the pipeline, thereby achieving the purpose of cleaning the water circuit. More specifically, the pressure difference between the air source and the water source of the implementation scheme can be about 1.0-3.0kg / cm 2 For example, the pressure of the gas source is higher than the pressure of the water source, and the pressure of the gas source can be 3.0-5.5 kg / cm 2 , for example 4.0-5.5kg / cm 2 ; The pressure of the water source can be 2.0-3.0kg / cm 2 , for example 2.0-2.5kg / cm 2 .

[0033] In traditional waterway cleaning technologies, most of them use chemical agents to clean the pipelines, such as ozone, sodium hypochlorite, hydrogen peroxide, acid-base water, etc. These technologies all have some obvious shortcomings, such as chemical residues that affect the safety of treatment water, chemical corrosion on waterway pipelines, biofilm drug resistance and difficulty in peeling, etc. The present utility model has found that by using water and air with a certain pressure difference to alternately flush the pipeline, the biofilm impurities deposited on the inner wall of the waterway pipe of the comprehensive treatment table can be effectively peeled off, achieving a good cleaning effect, overcoming the above-mentioned shortcomings in the prior art, and is simple to operate, low cost, and has very good application prospects.

[0034] In order to achieve alternating flushing operations, the device for cleaning the water circuit of the oral comprehensive treatment table of the implementation scheme can be controlled by a solenoid valve and an automatic control system. For example, the device may include a first three-way solenoid valve (SV1) (two-input and one-output solenoid valve) and a controller (30). The water source (10) and the air source (20) can be directly connected to the two inlets of the first three-way solenoid valve (SV1), and the outlet of the first three-way solenoid valve (SV 1) can be connected to the pipeline to be cleaned in the water circuit of the oral comprehensive treatment table, such as the water circuit of a mobile phone, the water circuit of a three-purpose gun, the water circuit of a dental scaler, and the water circuit of a water cup injector. The controller (30) is electrically connected to the first three-way solenoid valve (SV1) to control the switching of the inlets and outlets of the solenoid valve to achieve alternating flushing of water and air. The controller (30) may be, for example, a PLC control system, which may have programming functions for the frequency and duration of pulsation cleaning, the duty ratio of gas / water pulsation, and the duration of cleaning and drying of the pipeline by compressed gas, and may be provided with a display screen and a keyboard to implement programming operations, which are well known to those skilled in the art and will not be described in detail herein. The power supply (80) is used to supply power to the controller (30) and the solenoid valve, etc., and may be, for example, a DC power supply, etc.

[0035] It should be understood that the controller (30) can be an independent controller, which is suitable for technical modification of the treatment table in use, and the device can be installed to realize the waterway cleaning and maintenance function. Alternatively, the device of the utility model can be used as a part of the comprehensive treatment table, and the PLC control system can be integrated with the control system of the comprehensive treatment table, which can save space and cost. In addition, in the device of the utility model for cleaning the waterway of the oral comprehensive treatment table, the water source (10) and the air source (20) can be taken from the water source and the air source of the comprehensive treatment table itself as the medium for cleaning the pipeline, that is, the device of the utility model can be further combined with the oral comprehensive treatment table, so that the original oral comprehensive treatment table system does not need to be significantly changed, making the entire system more feasible in terms of operability and economy.

[0036] In order to be combined with an oral comprehensive treatment table, the device for cleaning the water channel of the oral comprehensive treatment table of the implementation scheme may further include a second three-way solenoid valve (SV2) (a one-inlet and two-outlet solenoid valve), a foot switch (40), an air-controlled switch (50), and a work / cleaning switching switch (90), etc.

[0037] refer to Figure 2 The inlet of the second three-way solenoid valve (SV2) can be connected to the gas source (20), and then the first outlet thereof can be connected to the second inlet of the first three-way solenoid valve (SV1), and the second outlet thereof can be connected to the gas path of the oral comprehensive treatment table. The controller (30) is electrically connected to the second three-way solenoid valve (SV2), thereby controlling the switching of the second three-way solenoid valve (SV2).

[0038] The foot switch (40) and the air control switch (50) can be arranged on the pipeline between the second three-way solenoid valve (SV2) and the air source (20). Both the air control switch (50) and the working / cleaning switching switch (90) are electrically connected to the controller (30). According to the embodiment of the utility model, the selection (switching) between the working mode / cleaning mode of the oral comprehensive treatment table can be realized by operating the working / cleaning switching switch (90), and after the switching, the operation of the foot switch (40), the air control switch (50) and the controller (30) can be used to realize the operation of the oral comprehensive treatment table in different modes.

[0039] More specifically, when the oral comprehensive treatment table is in the normal working mode, that is, the working / cleaning switch (90) is switched to the working mode, the foot switch (40) can be stepped on to trigger the air-controlled switch (50) using compressed air. After the controller (30) receives the signal, the controller (30) controls the first three-way solenoid valve (SV1) and the second three-way solenoid valve (SV2). The first inlet and outlet of the first three-way solenoid valve (SV1) are opened and in a normally open state, and the second inlet is closed; the water in the water source (10) enters the water path of the oral comprehensive treatment table through the first inlet and outlet of the first three-way solenoid valve (SV1); at the same time, the first outlet of the second three-way solenoid valve (SV2) is closed, and the second outlet and inlet are opened and in a normally open state, and the gas in the gas source (20) enters the gas path of the oral comprehensive treatment table through the inlet and second outlet of the second three-way solenoid valve (SV2).

[0040] When the water channel of the oral comprehensive treatment table needs to be cleaned, the working / cleaning switching switch (90) is used to switch the system mode to the cleaning mode to enter the pre-cleaning pipeline state. After the cleaning preparation work is ready, the foot switch (40) is stepped on to trigger the air control switch (50) using compressed air. After receiving the signal, the controller (30) starts the pipeline cleaning control signal generator to output a preset control signal: the second outlet of the second three-way solenoid valve (SV2) is closed, the first outlet is opened, and the gas source is provided to the first three-way solenoid valve (SV1); the outlet of the first three-way solenoid valve (SV1) is in a normally open state, and the controller (30) controls the first inlet and the second inlet of the first three-way solenoid valve (SV1) to open and close alternately, thereby entering a pulsating cleaning state of water and gas alternation; the frequency and time of the water and gas pulsating cleaning can be preset; for example, the frequency of the pulsating cleaning can be 2-6 Hz / second, such as 3, 4, 5 Hz / second, and the duration of the pulsating cleaning can be 40-60 seconds, such as 50 seconds; after the pulsating cleaning is completed, the pipeline is dried, that is, the pipeline is purged with gas from the gas source, and the purging time is 10-20 seconds; during this process, the first inlet of the first three-way solenoid valve (SV1) is in a closed state. This achieves the drying of the pipelines, keeping the water pipelines of the comprehensive dental treatment table dry during non-working periods, eliminating the conditions for bacterial growth and biofilm formation, and keeping the pipelines clean for a long time.

[0041] After the drying operation is completed, the controller (30) issues a warning indication, such as a light indicator or an audible alarm. After receiving the warning, the operator can release the foot switch (40), thereby completing the cleaning of a pipeline. It should be understood that after the pipeline is cleaned, the end of the pipeline can be sealed during the idle period of the oral comprehensive treatment table to maintain a good cleaning state.

[0042] Afterwards, if necessary, the work / cleaning switch (90) can be kept in the cleaning mode to prepare for the cleaning of the next pipeline. After the cleaning preparation is ready, the foot switch (40) is stepped on and the above operation is repeated until all pipelines are cleaned. At this time, if the oral comprehensive treatment table needs to be operated, the work / cleaning switch (90) can be placed in the working state position.

[0043] Referring to the accompanying drawings, in order to prevent the backflow of water vapor, a check valve (60) can be set on the pipeline before the first inlet and the second inlet of the first three-way solenoid valve (SV1); a pressure gauge (not shown) can also be set on the water supply pipeline and the air supply pipeline to detect the pressure of the air supply and water supply. In addition, in order to facilitate connection and control, a water-gas combination control valve or an independent control valve (70) can also be set, and the outlet of the first three-way solenoid valve (SV1) and the second outlet of the second three-way solenoid valve (SV2) can be directly connected to the water inlet and the compressed air inlet of the water-gas combination control valve or the independent control valve (70), and then the water outlet and the air outlet of the water-gas combination control valve or the independent control valve (70) are respectively connected to the water circuit and the air circuit of the oral comprehensive treatment table. It should be understood that the water-gas combination control valve or the independent control valve (70) can also be a part of the oral comprehensive treatment table, so that the first three-way solenoid valve (SV1) and the second three-way solenoid valve (SV2) are actually directly connected to the oral comprehensive treatment table.

[0044] Under the pulsating action of compressed air and water, due to the pressure difference, the pipe wall produces a large frequency and amplitude of cyclic expansion and contraction, so that the biofilm impurities deposited on the pipe wall fall off and are discharged from the pipeline, so as to achieve the purpose of cleaning the waterway. The last driving signal of each cleaning cycle is guaranteed to be compressed air and last for a long time (for example, 20 seconds) to achieve the purpose of drying. In this way, the pipeline can be kept dry, especially when the treatment table is stopped, the pipeline of the treatment water can be kept dry, without dead water or humid environment that breeds bacteria, which can effectively reduce the bacterial density of the treatment water and meet the safety standards of the treatment water.

[0045] The present invention is further described below in conjunction with specific experiments.

[0046] The root cause of the biofilm growth in the tail pipe of the mobile phone is that when the comprehensive treatment table is not in use, there is water in the slender water channel of the tail pipe of the mobile phone, and the end of the tail pipe of the mobile phone is open. When this part of the water in the tail pipe of the mobile phone is idle for a long time, it is stagnant water. Stagnant water is a necessary condition for the growth of bacteria and the formation of biofilm. Over time, the inner wall of the tail pipe of the mobile phone is prone to biofilm deposition, forming a large amount of dirt, resulting in excessive bacteria, and even malfunctions such as blockage of the water channel of the mobile phone. Therefore, the tail pipe of the comprehensive treatment table is used as an example for the experiment below.

[0047] Experimental subjects: There are 12 dental comprehensive treatment tables in normal use in the relevant departments of the applicant, with a service life of 5 years. Mobile phone water samples were collected as research objects.

[0048] Experimental instruments and reagents: oral comprehensive treatment table (German SIRONA C8+, equipped with the device of the utility model), bacterial culture instrument, water source is municipal water (filtered, two water pressures, respectively 2.0kg / cm 2 , 3.0kg / cm2 ), the air source is compressed air of three pressures (the air pressure is 3.0kg / cm 2 , 4.0kg / cm 2 and 5.0kg / cm 2 ), sodium hypochlorite solution (500 mg / L).

[0049] Experimental methods:

[0050] 1. Grouping and sampling: Divided into 6 groups, 2 comprehensive oral treatment tables per group, the experiment lasted for 6 days, and each group carried out the following at the same time:

[0051] The first group was the experimental group of the utility model method. Before and after the outpatient clinic every day, the method of the utility model was used to clean the oral comprehensive treatment table handpiece pipeline. The water source pressure was 2.0kg / cm 2 , gas source pressure is 3.0kg / cm 2 The frequency of pulsating cleaning was 3 Hz / second, the duration of pulsating cleaning was 60 seconds, and the drying time was 20 seconds, which was carried out continuously for 5 days. 15 minutes after the end of cleaning on the 5th day, water samples were collected from the water outlet of the mobile phone in the working mode (two sample tubes / station, 10 ml / piece), and 4 samples were obtained.

[0052] The second group is the experimental group of the utility model method, except that the gas source pressure is 4.0kg / cm 2 , and after the outpatient clinic on the 6th day, water samples were collected from the water outlet of the mobile phone in the working mode (two sample tubes / station, 10 ml / piece) to obtain 4 samples, and the rest were the same as the first group; a total of 8 samples were obtained;

[0053] The third group is the experimental group of the utility model method, except that the gas source pressure is 5.0kg / cm 2 , the rest were the same as group 1, and 4 samples were obtained;

[0054] The fourth group was the isobaric water-air flushing group, except that the water source pressure was 3.0 kg / cm 2 , the rest were the same as group 1, and 4 samples were obtained;

[0055] The fifth group used sodium hypochlorite solution for flushing and disinfection. Before and after the outpatient clinic every day, sodium hypochlorite solution was used to clean the oral comprehensive treatment table handpiece pipeline alone. The solution pressure was 2.0kg / cm 2 The cleaning time was 60 seconds, and it was carried out for 5 consecutive days. 15 minutes after the cleaning on the 5th day, water samples were collected from the water outlet of the mobile phone in the working mode (two sample tubes / unit, 10 ml / unit), and 4 samples were obtained; after the outpatient clinic on the 6th day, water samples were collected from the water outlet of the mobile phone in the working mode (two sample tubes / unit, 10 ml / unit), and 4 samples were obtained, a total of 8 samples;

[0056] Group 6 was the control group, which did not undergo flushing and disinfection. After the end of the outpatient clinic on the 5th day, in the working mode, the water source pressure was 2.0 kg / cm 2 Collect samples from the water outlet of the handpiece of the oral comprehensive treatment table (two sample tubes / table, 10 ml / piece), and obtain 4 samples;

[0057] In addition, after the end of the outpatient clinic on the 5th and 6th days, the water source was sampled and tested, 2 samples / day, 10 ml / sample, for a total of 4 samples, as a blank group.

[0058] 2. Culture and testing: The water samples of each group were cultured and counted using a bacterial culture and analyzer. The test items included Pseudomonas aeruginosa and total colony count. The average value of each sample was taken. The test reference standards: GB 8538-2016 "National Food Safety Standard - Test Method for Drinking Natural Mineral Water" and GB5749-2006 "Sanitary Standard for Drinking Water".

[0059] 3. Test results: See Table 1 below

[0060] Table 1: Experimental results

[0061]

[0062] As shown in the table above, compared with the blank group, in Group 6 (control group), Pseudomonas aeruginosa and total colony count were detected, and exceeded the relevant standards. This indicates that there is biological contamination in the mobile phone pipeline of the comprehensive oral treatment table. In the experimental groups 1, 2 and 3 of the utility model, Pseudomonas aeruginosa was not detected, and the total colony count also met the relevant regulations, which shows that the method of the utility model can achieve a good cleaning effect. In Group 4 (isobaric cleaning group), Pseudomonas aeruginosa was also detected, and the total colony count also exceeded the relevant standards; this shows that the effect of isobaric cleaning is not good, and further proves the effectiveness of the technology of the utility model. In Group 5, the sample analysis on the 5th day showed that sodium hypochlorite showed a certain cleaning effect, and the sample test results met the relevant standards; however, in the samples on the 6th day, Pseudomonas aeruginosa was re-detected, and the total colony count also increased greatly, which shows that the biological contamination in the mobile phone pipeline of the comprehensive oral treatment table has not been fundamentally eliminated. Combined with the analysis results of the blank group, it can be determined that there are relatively stubborn biofilm contaminants attached to the mobile phone pipeline of the comprehensive oral treatment table. In contrast, in the second group of the present invention, the sample test on the 6th day still showed good results, and all test items met the relevant regulations. This shows that the method of the present invention can fundamentally remove the source of pollution, that is, it can effectively break the biofilm deposition on the inner wall of the pipe, achieve waterway cleaning, and effectively reduce the bacterial colony of the treatment water, so that it meets the safety water standards.

[0063] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the device and its core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A device for cleaning the waterway of a comprehensive oral treatment table, characterized in that: The invention comprises a water source (10), an air source (20), a first three-way solenoid valve (SV1) and a controller (30), wherein the difference between the pressure of the air source and the pressure of the water source is about 1.0-3.0 kg / cm 2 The water source (10) is connected to the first inlet of the first three-way solenoid valve (SV1), the air source (20) is connected to the second inlet of the first three-way solenoid valve (SV1), and the outlet of the first three-way solenoid valve (SV1) is connected to the water path of the oral comprehensive treatment table; the controller (30) is electrically connected to the first three-way solenoid valve (SV1) and is used to control the first three-way solenoid valve (SV1) to alternately open the water source (10) and the air source (20), so as to use the air source and the water source to alternately pulsate and clean the water path of the oral comprehensive treatment table; The water source (10) is clean water that meets the safety water standards, and the gas source (20) is gas that meets the safety and cleanliness standards.

2. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 1, characterized in that: It also includes a second three-way solenoid valve (SV2), the air source (20) is connected to the inlet of the second three-way solenoid valve (SV2), the first outlet of the second three-way solenoid valve (SV2) is connected to the second inlet of the first three-way solenoid valve (SV1), and the second outlet of the second three-way solenoid valve (SV2) is connected to the air circuit of the oral comprehensive treatment table.

3. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 2, characterized in that: The invention also includes a work / cleaning switch (90), a foot switch (40) and an air-controlled switch (50) arranged on a pipeline between an air source (20) and an inlet of a second three-way solenoid valve (SV2); the work / cleaning switch (90) and the air-controlled switch (50) are electrically connected to a controller (30) respectively.

4. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 1, characterized in that: It also includes a check valve (60) arranged on a pipeline connecting the first inlet and the second inlet of the first three-way solenoid valve (SV1).

5. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 1, characterized in that: The controller (30) is a PLC control system.

6. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 2, characterized in that: It also comprises a water-gas combination control valve or an independent control valve (70), wherein the outlet of the first three-way solenoid valve (SV1) is connected to the water circuit of the comprehensive oral treatment table via the water-gas combination control valve or the independent control valve (70), and the second outlet of the second three-way solenoid valve (SV2) is connected to the gas circuit of the comprehensive oral treatment table via the water-gas combination control valve or the independent control valve (70).

7. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 1, characterized in that: The air source is a therapeutic air source of the comprehensive oral treatment table, and the water source is a therapeutic water source of the comprehensive oral treatment table.

8. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 1, characterized in that: It also includes a power supply (80) electrically connected to the controller (30).

9. The device for cleaning the water channel of a comprehensive oral treatment table according to claim 1, characterized in that: The pressure of the gas source is 3.0-5.5 kg / cm 2 , the water source pressure is 2.0-3.0kg / cm 2 .

Images