CN115645214A

CN115645214A - Dental chair disinfection device and dental chair

Info

Publication number: CN115645214A
Application number: CN202211014808.6A
Authority: CN
Inventors: 吕冰; 周元胜; 黄学华; 袁文海
Original assignee: Guangzhou Ajax Medical Equipment Co Ltd
Current assignee: Guangzhou Ajax Medical Equipment Co Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-01-31
Anticipated expiration: 2042-08-23
Also published as: CN115645214B

Abstract

The application is suitable for dental equipment technical field, provides a dental chair degassing unit and dental chair, including first casing, first control switch, second control switch and control system. The first shell is provided with a liquid mixing cavity, and a first liquid inlet end and a second liquid inlet end which are communicated with the liquid mixing cavity. The first control switch is arranged between the first liquid inlet end and the first shell; the second control switch is installed between the second liquid inlet end and the first shell. The control system is in signal connection with the first control switch and the second control switch respectively, and the first control switch and the second control switch are controlled to be turned on through the control system respectively, so that the first liquid inlet end and the second liquid inlet end are communicated with the liquid mixing cavity respectively, and the first liquid and the second liquid enter the liquid mixing cavity respectively and are mixed in the liquid mixing cavity to form mixed liquid. The application provides a dental chair degassing unit can automatic preparation mix liquid, and degree of automation is higher.

Description

Dental chair disinfection device and dental chair

Technical Field

The application relates to the technical field of dental equipment, in particular to a dental chair disinfection device and a dental chair.

Background

As important equipment in the dental field, the dental chairs are usually internally provided with complex pipelines, and a disinfection device is required to be arranged on the dental chairs and is used for disinfecting the pipelines and water consumption ends connected with the pipelines at regular intervals so as to reduce the possibility that bacteria are bred in the pipelines or the water consumption ends to cause infection of patients.

At present, the common method for disinfecting the dental chair pipeline comprises the following steps: the disinfection device is connected with each pipeline of the dental chair and the water using end connected with each pipeline, so as to disinfect each pipeline of the dental chair and the water using end connected with each pipeline.

Therefore, the existing disinfection device cannot automatically prepare the disinfection solution, the prepared disinfection solution is manually injected into the disinfection device, the disinfection process is complicated, and the automation degree is low.

Disclosure of Invention

An object of the embodiment of the application is to provide a dental chair degassing unit and dental chair, aim at solving the lower technical problem of degassing unit degree of automation among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a dental chair disinfection device comprising:

the liquid mixing device comprises a first shell and a second shell, wherein the first shell is provided with a liquid mixing cavity, and a first liquid inlet end and a second liquid inlet end which are communicated with the liquid mixing cavity are arranged on the first shell;

the first control switch is arranged between the first liquid inlet end and the first shell and used for controlling the communication state between the first liquid inlet end and the liquid mixing cavity;

the second control switch is arranged between the second liquid inlet end and the first shell and used for controlling the communication state between the second liquid inlet end and the liquid mixing cavity;

and the control system is in signal connection with the first control switch and the second control switch respectively and is used for controlling the on-off states of the first control switch and the second control switch.

In one possible design, the dental chair disinfection device further comprises a height detection structure for detecting the height of the dental chair; the height detection structure is in signal connection with the control system, and the control system is used for adjusting the opening and closing states of the first control switch and the second control switch according to the height of the dental chair fed back by the height detection structure.

In a possible design, the height detection structure comprises a lifting adjusting motor, the lifting adjusting motor is used for controlling lifting of the dental chair, the lifting adjusting motor is in signal connection with the control system, and the control system controls the opening and closing states of the first control switch and the second control switch according to a lifting adjusting amount fed back by the lifting adjusting motor.

In a possible design, the dental chair disinfection device further comprises a first liquid level sensor, the first liquid level sensor is installed in the liquid mixing cavity and is in signal connection with the control system, the first liquid level sensor is used for detecting the liquid level height in the liquid mixing cavity, and the control system controls the on-off state of the first control switch and the second control switch according to liquid level height information fed back by the first liquid level sensor.

In one possible design, the dental chair disinfection device further comprises a liquid storage bottle, the liquid storage bottle is connected with the first liquid inlet end, and the liquid storage bottle is used for storing first liquid.

In a possible design, a second liquid level sensor is arranged in the liquid storage bottle and used for detecting the liquid level height in the liquid storage bottle, and the control system is in signal connection with the second liquid level sensor.

In one possible design, the first housing has a first inlet through which at least one of the first inlet end and the second inlet end communicates with the mixing chamber; the dental chair disinfection device comprises a third control switch, the third control switch is arranged at the first inlet and is used for controlling the opening and closing state of the first inlet, and the third control switch is in signal connection with the control system.

In a possible design, the dental chair disinfection device further comprises a first pressurization valve, the first pressurization valve is connected with the third control switch, the first pressurization valve is in signal connection with the control system, and the control system controls the opening and closing state of the third control switch by controlling the opening and closing state of the first pressurization valve, so as to control the opening and closing state of the first inlet.

In a possible design, dental chair degassing unit still includes the stock solution chamber, the stock solution chamber with mix the sap cavity intercommunication, the stock solution chamber be used for with the water end intercommunication of dental chair, the stock solution chamber with mix and be provided with fourth control switch between the sap cavity, fourth control switch is used for control the stock solution chamber with mix the connected state in sap cavity, the stock solution chamber is connected with stock solution pressurized conduit, stock solution pressurized conduit be used for to the stock solution chamber lets in the pressurized medium.

The application also provides a dental chair, including dental chair degassing unit, dental chair degassing unit includes:

the liquid mixing device comprises a first shell, a second shell and a liquid inlet pipe, wherein the first shell is provided with a liquid mixing cavity and a first liquid inlet end and a second liquid inlet end which are communicated with the liquid mixing cavity;

the control system is in signal connection with the first control switch and the second control switch respectively, and is used for controlling the on-off states of the first control switch and the second control switch;

the height detection structure is in signal connection with the control system and used for detecting the height of the dental chair, and the control system is further used for adjusting the opening and closing states of the first control switch and the second control switch according to the height of the dental chair fed back by the height detection structure. .

The application provides a dental chair degassing unit and dental chair's beneficial effect lies in: compared with the prior art, the dental chair degassing unit of this application, first feed liquor end are used for supplying first liquid to get into and mix the liquid intracavity, and the second feed liquor end is used for supplying the second liquid to get into and mixes the liquid intracavity. When the first control switch is turned on, the first liquid inlet end is communicated with the liquid mixing cavity, and the first liquid enters the liquid mixing cavity through the first liquid inlet end. When the second control switch is turned on, the second liquid inlet end is communicated with the liquid mixing cavity, and the second liquid enters the liquid mixing cavity through the second liquid inlet end. The first control switch and the second control switch are respectively controlled to be turned on through the control system, so that the first liquid inlet end and the second liquid inlet end are respectively communicated with the liquid mixing cavity, and the first liquid and the second liquid respectively enter the liquid mixing cavity and are mixed in the liquid mixing cavity to form mixed liquid. One of the first liquid and the second liquid can be pure water (or tap water), the other is high-concentration disinfection stock solution, and the pure water (or tap water) and the high-concentration disinfection stock solution are mixed in the liquid mixing cavity to form a mixed liquid, namely the disinfectant. By last, the dental chair degassing unit that this application provided can prepare the antiseptic solution automatically, and degree of automation is higher.

Because the dental chair that this application provided has included the same technical feature with the dental chair degassing unit that this application provided, the dental chair that this application provided has above-mentioned dental chair degassing unit's beneficial effect, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a disinfection apparatus for dental chairs according to an embodiment of the present application;

FIG. 2 is a schematic view of another embodiment of the dental chair disinfection apparatus provided in the present application;

FIG. 3 is a schematic sectional view showing the overall structure of a disinfecting device for dental chairs according to another embodiment of the present application;

FIG. 4 is a schematic diagram illustrating a relationship between a flow rate of a first liquid and a height of a reservoir of a dental chair disinfection apparatus provided by an embodiment of the present application;

FIG. 5 is an enlarged partial schematic view at C of FIG. 3;

FIG. 6 is an enlarged partial schematic view at A of FIG. 1;

FIG. 7 is a schematic structural diagram of a third control switch of the disinfecting device for the dental chair according to an embodiment of the present application;

FIG. 8 is a schematic view of a dental chair disinfection apparatus according to an embodiment of the present application delivering mixed liquor to a second chamber;

FIG. 9 is a schematic view of the dental chair disinfection apparatus provided by one embodiment of the present application in a state where mixed liquor is prepared in the main chamber;

FIG. 10 is an enlarged view of a portion of FIG. 9 at D;

FIG. 11 is a schematic view of a one-way valve of a dental chair disinfection device provided by an embodiment of the present application;

fig. 12 is a partially enlarged schematic view of fig. 1 at B.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the structures or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

Note that solid arrows in fig. 1 and 2 indicate the direction of liquid flow, and dashed arrows indicate the direction of pressurized medium flow; the arrows in fig. 8 indicate the direction of liquid flow; the arrows in the first chamber 211 in fig. 9 indicate the direction of the pressurized medium flow and the arrows in the second outlet 240 indicate the liquid flow direction.

As shown in fig. 1 and 2, one embodiment of the present application provides a dental chair disinfection device comprising a first housing, a first control switch 120, a second control switch 130, and a control system. The first shell is provided with a liquid mixing cavity, and the first shell is provided with a first liquid inlet end 101 and a second liquid inlet end 102 which are communicated with the liquid mixing cavity. The first control switch 120 is installed between the first liquid inlet end 101 and the first casing, and is used for controlling the communication state between the first liquid inlet end 101 and the liquid mixing cavity. The second control switch 130 is installed between the second liquid inlet end 102 and the first shell, and is used for controlling the communication state between the second liquid inlet end 102 and the liquid mixing cavity; the control system is in signal connection with the first control switch 120 and the second control switch 130 respectively (the signal connection may be through a data line or wireless connection, etc.), and the control system is configured to control on/off states of the first control switch 120 and the second control switch 130.

In the dental chair disinfection apparatus provided by this embodiment, the first liquid inlet end 101 is used for allowing the first liquid to enter the liquid mixing cavity, and the second liquid inlet end 102 is used for allowing the second liquid to enter the liquid mixing cavity. When the first control switch 120 is turned on, the first liquid inlet end 101 is communicated with the liquid mixing cavity, and the first liquid enters the liquid mixing cavity through the first liquid inlet end 101. When the second control switch 130 is turned on, the second liquid inlet end 102 is communicated with the liquid mixing cavity, and the second liquid enters the liquid mixing cavity through the second liquid inlet end 102. The first control switch 120 and the second control switch 130 are respectively controlled to be turned on by the control system, so that the first liquid inlet end 101 and the second liquid inlet end 102 are respectively communicated with the liquid mixing cavity, and the first liquid and the second liquid respectively enter the liquid mixing cavity and are mixed in the liquid mixing cavity to form mixed liquid. One of the first liquid and the second liquid can be pure water (or tap water), the other is high-concentration disinfection stock solution, and the pure water (or tap water) and the high-concentration disinfection stock solution are mixed in the liquid mixing cavity to form a mixed liquid, namely the disinfectant. Therefore, the dental chair disinfection device provided by the embodiment can automatically prepare disinfection liquid, and the automation degree is higher.

The dental chair disinfection device provided by the embodiment can be applied to dental chairs. The dental chair comprises a liquid inlet hole, a pipeline and a water using end, wherein two ends of the pipeline are respectively connected with the liquid inlet hole and the water using end. In an alternative embodiment, the dental chair disinfection device is connected with the liquid inlet hole of the dental chair so that the dental chair disinfection device is connected with the pipeline and the water end of the dental chair, thereby enabling the dental chair disinfection device to convey disinfection solution to the dental chair so as to disinfect the pipeline of the dental chair and the water end connected with the pipeline.

In another alternative embodiment, the first liquid and the second liquid may be different liquids for preparing the working solution, so that the dental chair disinfection device can also prepare the working solution for the use of the dental chair during working, and the working solution is conveyed to the water end of the dental chair through the pipeline of the dental chair for the use of the dental chair. The dental chair disinfection device provided by the embodiment can also be applied to other equipment to disinfect the other equipment. Hereinafter, the dental chair disinfecting apparatus will be described in connection with the dental chair.

In another alternative embodiment, the first liquid and the second liquid may be the same liquid. For example, the first liquid and the second liquid are tap water, the tap water directly is conveyed into the pipeline of the dental chair and the water using end connected with the pipeline after entering the liquid mixing cavity through the first liquid inlet end 101 and the second liquid inlet end 102, and the tap water is used for cleaning the pipeline and the water using end of the dental chair.

In one possible design, the first liquid inlet 101 may be a through hole for communicating with an external liquid inlet pipe into which the first liquid is injected. When the first control switch 120 is turned on, the first liquid enters the liquid mixing cavity through the first liquid inlet end 101. Alternatively, the first inlet 101 may be a quick-connect joint, and the quick-connect joint is connected with an external inlet pipe. Or, first feed liquor end 101 is the pipeline structure, and first feed liquor end 101 is connected with the source of carrying first liquid, and first liquid flows into through first feed liquor end 101 and mixes the liquid intracavity. The first control switch 120 may be a solenoid valve or other electrically operated switch.

In one possible design, the second inlet end 102 may also be a through hole, a quick-connect joint, or a pipe. Specifically, second feed liquor end 102 is pipeline structure, and second feed liquor end 102 directly is connected with second liquid delivery head, and when the second liquid was the running water, second liquid delivery head can be for tap. The second liquid conveying device injects a second liquid into the second liquid inlet end 102, and after the control system controls the second control switch 130 to be turned on, the second liquid in the second liquid inlet end 102 enters the liquid mixing cavity. The second control switch 130 may also be a solenoid valve or other electrical switch.

In one possible design, as shown in fig. 1 and 2, the dental chair disinfection apparatus further comprises a liquid storage bottle 400, the liquid storage bottle 400 is connected with the first liquid inlet end 101, and the liquid storage bottle 400 is used for storing the first liquid. When preparing mixed liquid, the first liquid in the stock solution bottle 400 can get into immediately and mix the liquid intracavity, and need not the manual work and inject first liquid into mixing the liquid chamber through first feed liquor end 101, and degree of automation is higher.

In one embodiment, as shown in fig. 1, the first inlet 101 is a pipe structure, the first control switch 120 is a solenoid valve, and the first control switch 120 has an inlet and an outlet. One end of the first liquid inlet end 101 is communicated with the liquid inlet of the first control switch 120, the other end is communicated with the liquid storage bottle 400, and the liquid outlet of the first control switch 120 is communicated with the liquid mixing cavity, so that the first liquid inlet end 101 is communicated with the liquid mixing cavity. The liquid storage bottle 400 is located above the first housing, and the first liquid in the liquid storage bottle 400 flows into the first liquid inlet end 101 under the action of self gravity. After the control system controls the first control switch 120 to be turned on, the liquid inlet and the liquid outlet of the first control switch 120 are communicated. First liquid flows into first feed liquor end 101 from stock solution bottle 400, then gets into first control switch 120 through the inlet, gets into through the outlet at last and mixes the liquid chamber, need not to set up other power conveying mechanism that are used for exporting first liquid, saves the cost of manufacture more.

In one embodiment, as shown in FIG. 3, the first housing further has a first outlet 170 in communication with the mixing chamber, the first outlet 170 for discharging the mixed liquid from the mixing chamber. Specifically, the first outlet 170 may be in communication with the inlet, and when the preparation of the mixed liquid in the mixing chamber is completed, the mixed liquid may be discharged into the pipeline through the first outlet 170 and reach the water consuming end.

In an alternative embodiment, the first outlet 170 may be provided with a liquid outlet control switch for controlling the communication state between the first outlet 170 and the liquid inlet. When the liquid outlet control switch is turned on, the first outlet 170 is communicated with the liquid inlet hole, the mixed liquid in the liquid mixing cavity can enter the liquid inlet hole through the first outlet 170, when the liquid outlet control switch is turned off, the first outlet 170 is disconnected from the liquid inlet hole, and the mixed liquid in the liquid mixing cavity stops entering the liquid inlet hole.

In one possible design, the liquid outlet control switch is in signal connection with a control system, and the control system is used for controlling the opening and closing state of the liquid outlet control switch. When the mixed liquid is being prepared in the mixed liquid cavity, the control system controls the liquid outlet control switch to be turned off to prevent the liquid in the mixed liquid cavity from being discharged from the first outlet 170, and after the mixed liquid is prepared, the control system controls the liquid outlet control switch to be turned on to enable the mixed liquid in the mixed liquid cavity to be discharged from the first outlet 170.

In one possible design, the control system can control the on time of the first control switch 120 and the on time of the second control switch 130 to control the volume of the first liquid and the second liquid fed into the liquid mixing chamber, thereby adjusting the concentration of the prepared mixed liquid. Specifically, one of the first liquid and the second liquid is tap water, and the other one is a disinfection original liquid, a certain volume of tap water and a certain volume of disinfection original liquid are injected into the liquid mixing cavity, so that a disinfection solution with a certain concentration is prepared in the liquid mixing cavity, and the disinfection solution can be used for disinfecting a pipeline of the dental chair and a water end connected with the pipeline.

In one possible design, the dental chair disinfection device further comprises a height detection structure, wherein the height detection structure is used for detecting the height of the dental chair; the height detection structure is in signal connection with a control system, and the control system is used for adjusting the opening and closing states of the first control switch 120 and the second control switch 130 according to the height of the dental chair fed back by the height detection structure. When the height of the dental chair is adjusted, the height of the dental chair disinfection device can be changed. After the height of the dental chair disinfection device is changed, the flow rate of the first liquid and the second liquid entering the liquid mixing cavity is changed. In order to reduce the concentration error of the mixed liquid prepared in the liquid mixing cavity, the control system can control the opening time of the first control switch 120 and the second control switch 130 according to the height of the dental chair by arranging the height detection structure, so that the volumes of the first liquid and the second liquid entering the liquid mixing cavity are controlled, the mixed liquid with the concentration meeting the use requirement can be prepared when the dental chair disinfection device is positioned at different heights, and the concentration error of the prepared mixed liquid is reduced.

In one embodiment, the control system controls the on time of the first control switch 120 and the second control switch 130 according to the variation value of the height of the dental chair to control the volume of the first liquid and the second liquid introduced into the liquid mixing cavity. For example, when the height of the dental chair is increased, the flow rates of the first liquid and the second liquid (the flow rates when the first liquid and the second liquid flow into the liquid mixing chamber) are increased, and the control system controls the opening time of the first control switch 120 and the second control switch 130 to be shortened so as to keep the volumes of the first liquid and the second liquid which are introduced into the liquid mixing chamber unchanged, thereby keeping the concentration of the mixed liquid unchanged and reducing the concentration error of the mixed liquid prepared by the dental chair disinfection device.

The above-described phenomenon in which the flow rates of the first liquid and the second liquid become large due to the increase in the height of the dental chair can be verified by the following experiment. Since the height change of the liquid storage bottle 400 is identical to the height change of the dental chair, the height change of the liquid storage bottle 400 can represent the height change of the dental chair. It should be noted that the following experiment is performed on the premise that the inner diameter of the liquid outlet of the first control switch 120 is 2mm and the inner diameter of the first liquid inlet 101 is 4mm, and the following experiment is specifically based on the height of the liquid storage bottle 400, and table 1 is an experimental data table in which the flow rate of the first liquid changes along with the change of the height of the liquid storage bottle 400:

table 1 height of liquid storage bottle and first liquid flow rate test data table

Note: the height of the liquid storage bottle 400 in table 1 refers to the height of the upper surface of the liquid storage bottle from the ground.

As can be analyzed from the data in table 1, the relationship between the flow rate of the first liquid and the height of the liquid storage bottle 400 is shown in fig. 4, and the flow rate of the first liquid and the height of the liquid storage bottle 400 are in a positive correlation, and specifically satisfy the following relation Y = (1/35) x +1.24, where Y represents the flow rate of the first liquid and x represents the height of the liquid storage bottle 400. As can be seen from table 1, when the volume of the reservoir bottle 400 is 800ml, the flow rate of the first liquid increases as the height of the reservoir bottle 400 increases; when the capacity of the liquid storage bottle 400 is 300nl, the flow rate of the first liquid also becomes larger as the height of the liquid storage bottle 400 increases. When the liquid storage bottle 400 is at the same height, the flow rate change between the liquid storage bottle 400 with the capacity of 300ml and the liquid storage bottle 400 with the capacity of 800ml is small, that is, the influence of the liquid level height of the first liquid in the liquid storage bottle 400 on the flow rate of the first liquid is small. Since the height variation of the liquid storage bottle 400 is identical to the height variation of the dental chair, it can be confirmed from the above experiment that the flow rate of the first liquid becomes larger as the height of the dental chair increases. And since the height variation of the liquid storage bottle 400 also represents the height variation of the dental chair disinfection apparatus, the height of the liquid storage bottle 400, that is, the height of the dental chair disinfection apparatus, is raised, so that the flow rate of the second liquid is also increased.

In a specific embodiment, the height detecting structure includes a lifting adjusting motor for controlling the lifting of the dental chair, the lifting adjusting motor is in signal connection with the control system, and the control system controls the on/off states of the first control switch 120 and the second control switch 130 according to the lifting adjusting amount fed back by the lifting adjusting motor. The lifting adjusting motor can be a rotating motor or a linear motor and the like. The lifting adjusting motor is connected with the dental chair. After the lifting adjusting motor controls the lifting of the dental chair, the lifting adjusting motor feeds back the lifting adjusting quantity for controlling the lifting of the dental chair to the control system. The lifting adjustment amount can be specifically the power output time of the lifting adjustment motor, or can also be the output amount of the lifting adjustment motor, and when the lifting adjustment motor is a rotating motor, the output amount can be the number of turns of the output shaft of the rotating motor; when the lifting motor is a linear motor, the output amount may be a distance moved by an output shaft of the linear motor. The control system judges the height of the dental chair according to the lifting adjustment amount, specifically, a conversion formula can be preset in the control system, and the control system converts the lifting adjustment amount into the height of the dental chair according to the conversion formula. Or a first data table is preset in the control system, and the control system finds the corresponding height of the dental chair through the current lifting adjustment amount. The control system can also be preset with a second data table, the control system finds the height of the corresponding liquid storage bottle 400 according to the height of the current dental chair, and the control system controls the opening time of the first control switch 120 and the second control switch 130 according to the height of the liquid storage bottle 400, namely controls the volume of the first liquid and the second liquid entering the liquid mixing cavity.

In another embodiment, the height detection structure comprises a height sensor, and the height sensor can be mounted on the dental chair or the dental chair disinfection device. Specifically, the altitude sensor is installed at the lateral wall of liquid storage bottle 400, and the altitude sensor is used for direct detection liquid storage bottle 400 apart from the height on ground. Or the height sensor is arranged on the outer side wall of the dental chair and used for detecting the height of the dental chair from the ground. The height sensor may be a photoelectric sensor, a radar, or an infrared distance meter.

In a possible design, as shown in fig. 3, the dental chair disinfection apparatus further includes a first liquid level sensor 180, the first liquid level sensor 180 is installed in the liquid mixing chamber and is in signal connection with the control system, the first liquid level sensor 180 is used for detecting a liquid level height in the liquid mixing chamber, and the control system controls an on/off state of the first control switch 120 and the second control switch 130 according to liquid level height information fed back by the first liquid level sensor 180. First level sensor 180 is through feeding back the liquid level height in the liquid cavity to control system, and control system judges whether need to prepare mixed liquid according to the liquid level height that first level sensor 180 fed back.

In one embodiment, a first maximum liquid level height value is preset in the control system. The first liquid level height sensor can monitor the liquid level height in the liquid mixing cavity in real time and feed back the liquid level height in the liquid mixing cavity monitored in real time to the control system. When the liquid level height in the liquid mixing cavity is greater than the first minimum liquid level height value, it indicates that the mixed liquid in the liquid mixing cavity is sufficient and does not need to be prepared, and the control system controls the first control switch 120 and the second control switch 130 to be turned off. When the liquid level height in the liquid mixing cavity reaches or is smaller than the first minimum liquid level height value, it indicates that the mixed liquid in the liquid mixing cavity is insufficient, and the mixed liquid needs to be prepared again, the control system controls the first control switch 120 to be turned on first and delays for a first time period, so as to inject the first liquid with the first volume into the liquid mixing cavity. After the first time period is over, the control system controls the first control switch 120 to be turned off, and the control system controls the second control switch 130 to be turned on and delays the second time period, so as to inject the second volume of the second liquid into the liquid mixing cavity. After the second time period, the control system controls the second control switch 130 to be turned off, which indicates that the preparation of the mixed liquid is completed, and controls the liquid outlet control switch to be turned on, so that the mixed liquid is discharged from the first outlet 170. It should be noted that, if the liquid level in the liquid mixing chamber is lower than the first minimum liquid level, the liquid level in the liquid mixing chamber will be higher than the first minimum liquid level after the first volume of the first liquid and the second volume of the second liquid are injected into the liquid mixing chamber.

In one possible design, the first time period and the second time period may be performed sequentially. For example, the control first controls the first control switch 120 to be turned on and delay a first time period, and then controls the second control switch 130 to be turned on and delay a second time period; or the control system first controls the second control switch 130 to be turned on and delays the second time period, and then controls the first control switch 120 to be turned on and delays the first time period. Or the first time period and the second time period may be executed simultaneously, and the control system controls the first control switch 120 to be turned on and delays the turning on of the first time period and the turning on of the second control switch 130 and delays the turning on of the second time period simultaneously.

In one possible design, the first level sensor 180 may be a floating ball level transmitter, an ultrasonic level transmitter, a radar level transmitter, an electro-optic level sensor, or a level probe assembly, among others. For example, when the first liquid level sensor 180 is an optoelectronic liquid level sensor, the position of the optoelectronic liquid level sensor in the liquid mixing chamber is the first minimum liquid level height value. When the liquid in the liquid mixing cavity passes through the photoelectric sensor, the liquid mixing cavity is indicated to have enough mixed liquid. When the liquid level in the liquid mixing cavity is lower than the position of the photoelectric sensor, the photoelectric sensor exposes the liquid level to indicate that the mixed liquid in the liquid mixing cavity is insufficient, the photoelectric sensor feeds back a signal indicating that the liquid in the liquid mixing cavity is insufficient to the control system, the control system respectively controls the first control switch 120 and the second control switch 130 to be switched on so as to inject the first liquid with the first volume and the second liquid with the second volume into the liquid mixing cavity, and the control system controls the first control switch 120 and the second control switch 130 to be switched off respectively so that the liquid in the liquid mixing cavity can submerge the photoelectric liquid level sensor again. The photoelectric liquid level sensor has small volume and high reaction speed, and the occupied space of the first liquid level sensor 180 can be reduced by adopting the photoelectric liquid level sensor.

In one possible design, the first level sensor 180 is a level probe assembly that includes a low level probe and a high level probe. The height value of the low liquid level probe from the bottom surface of the liquid mixing cavity is a first lowest liquid level height value; the height value of the high liquid level probe from the bottom surface of the liquid mixing cavity is the first highest liquid level height value. Adopt low liquid level probe and high liquid level probe combination, can detect the first minimum liquid level height in mixing the sap cavity, also can detect the first maximum liquid level height in mixing the sap cavity.

In one possible design, a second liquid level sensor 410 is disposed within the fluid reservoir 400, the second liquid level sensor 410 is configured to detect a liquid level within the fluid reservoir 400, and the control system is in signal communication with the second liquid level sensor 410. The control system is also used for controlling the on-off state of the first control switch 120 according to the liquid level height value fed back by the second liquid level sensor 410. A second lowest liquid level height value and a second highest liquid level height value are also preset in the control system, and when the liquid level height in the liquid storage bottle 400 is greater than the second lowest liquid level height value, it indicates that the first liquid in the liquid storage bottle 400 is enough; when the liquid level in the liquid storage bottle 400 reaches or is less than the second lowest liquid level height value, it indicates that the first liquid in the liquid storage bottle 400 is insufficient. When the liquid in the liquid storage bottle 400 is insufficient, the control system controls the first control switch 120 to be turned off, the first liquid is temporarily injected into the liquid mixing cavity until the first liquid is injected into the liquid storage bottle 400, so that the liquid level in the liquid storage bottle 400 reaches the second highest liquid level height value, the control system controls the first control switch 120 to be turned on, and the first liquid is continuously injected into the liquid mixing cavity. The second liquid level sensor 410 may have the same structure as the first liquid level sensor 180, and thus, will not be described in detail.

In a possible design, the dental chair disinfection device further comprises an alarm, the control system is in signal connection with the alarm, and the control system is used for controlling the alarm to alarm according to the liquid level height fed back by the second liquid level sensor 410. When the second liquid level sensor 410 detects that the liquid level in the liquid storage bottle 400 reaches or is less than the second minimum liquid level height value, the control system controls the alarm to alarm, prompts that the first liquid in the liquid storage bottle 400 is insufficient, and needs to inject the first liquid into the liquid storage bottle 400. The alarm can be a warning lamp, a buzzer, a display panel (the display panel is used for displaying alarm prompts) and the like.

In one possible design, as shown in fig. 2 and 3, the first housing is connected to a second pressure increasing valve 160, the second pressure increasing valve 160 is connected to a second pressure increasing pipe 161, and the second pressure increasing pipe 161 is filled with a pressure increasing medium (a pressure increasing gas or a pressure increasing liquid). The second pressurizing valve 160 is used for controlling the communication state of the second pressurizing pipe 161 and the liquid mixing chamber. When the second pressure increasing valve 160 is opened, the second pressure increasing pipe 161 is communicated with the liquid mixing chamber, and the pressure increasing medium in the second pipe enters the liquid mixing chamber, so that the pressure in the liquid mixing chamber is increased, and the mixed liquid in the liquid mixing chamber is discharged from the first outlet 170. When the second pressure increasing valve 160 is closed, the second pressure increasing pipe 161 is disconnected from the liquid mixing chamber, the pressure increasing medium does not enter the liquid mixing chamber any more, the pressure in the liquid mixing chamber is gradually reduced until the pressure is equal to the external atmospheric pressure, and the mixed liquid stops being discharged from the liquid mixing chamber.

In one possible design, the second pressure increasing valve 160 is in signal communication with a control system, which is also used to control the open and closed state of the second pressure increasing valve 160. When the mixed liquid needs to be output from the mixed liquid cavity, the control system controls the second pressurization valve 160 to be opened so as to pressurize the mixed liquid cavity, and the mixed liquid in the mixed liquid cavity is discharged. When the mixed liquid is not required to be output from the mixed liquid cavity, the control system controls the second pressurization valve 160 to be closed, the pressurization to the mixed liquid cavity is stopped, and the mixed liquid stops being discharged from the mixed liquid cavity.

In an embodiment, the second pressure increasing pipe 161 is connected to a pressure regulating valve 162, the pressure regulating valve 162 is connected to a pressure increasing control valve 163, and whether to introduce the pressure medium into the second pressure increasing pipe 161 is controlled by controlling the opening and closing state of the pressure increasing control valve 163. Specifically, when the pressure increasing control valve 163 is opened, the pressure increasing medium enters the pressure adjusting valve 162 through the pressure increasing control valve 163, is pressure-adjusted, and then enters the second pressure increasing pipe 161. The pressurizing medium is in particular a pressurizing gas.

In one possible design, the first housing has a first inlet 140, and at least one of the first inlet 101 and the second inlet 102 communicates with the mixing chamber through the first inlet 140; the dental chair disinfection device comprises a third control switch 150, the third control switch 150 is arranged at the first inlet 140, the third control switch 150 is used for controlling the opening and closing state of the first inlet 140, and the third control switch 150 is in signal connection with a control system. When the mixed liquid in the liquid mixing cavity needs to be output, the control system controls the second pressure increasing valve 160 to be opened, and controls the third control switch 150 to be closed, so that the first inlet 140 is closed, the pressurized medium is prevented from entering the liquid mixing cavity and then being discharged from the liquid mixing cavity through the first inlet 140, and the sealing performance of the liquid mixing cavity is improved.

In one embodiment, as shown in fig. 3, the first inlet 101 and the second inlet 102 are connected through the first inlet 140. Specifically, the liquid mixing cavity comprises a main cavity 111 and a secondary cavity 112, the first liquid inlet end 101 and the second liquid inlet end 102 are both communicated with the secondary cavity 112, and the secondary cavity 112 is communicated with the main cavity 111 through a first inlet 140. The first liquid and the second liquid enter the sub-chamber 112 first, and then enter the main chamber 111 through the first inlet 140, and the first liquid and the second liquid enter the main chamber 111 and mix at the main chamber 111 to form a mixed liquid, and the process that the first liquid and the second liquid enter the main chamber 111 to mix to form a mixed liquid is also the process of preparing the mixed liquid. The first liquid level sensor 180 is located in the main chamber 111 for detecting the liquid level height of the main chamber 111. The second pressure increasing valve 160 is used to control the communication state between the second pressure increasing pipe 161 and the main chamber 111, that is, when the mixed liquid in the mixed liquid chamber needs to be discharged, only the pressure of the main chamber 111 needs to be increased. Through setting up main cavity 111 and sub-cavity 112, sub-cavity 112 uses as the feed liquor pipeline for first liquid and second liquid all mix through rethread first entry 140 entering main cavity 111 behind sub-cavity 112, have reduced the opening in main cavity 111, have improved main cavity 111's leakproofness.

In one possible design, as shown in fig. 2 and 3, the dental chair disinfection apparatus further includes a first pressure increasing valve 190, the first pressure increasing valve 190 is connected to the third control switch 150, the first pressure increasing valve 190 is in signal connection with a control system, and the control system controls the open/close state of the third control switch 150 by controlling the open/close state of the first pressure increasing valve 190, so as to control the open/close state of the first inlet 140. Specifically, the first boost valve 190 is connected to a first boost pipeline 191, a boost medium is injected into the first boost pipeline 191, and the control system controls the communication state of the first boost pipeline 191 and the third control switch 150 by controlling the on-off state of the first boost valve 190, so as to control the on-off state of the third control switch 150.

In one possible design, as shown in fig. 5 and 6, the first housing has a first mounting portion 159, and the third control switch 150 is mounted to the first mounting portion 159 and connected to the first pressure increasing valve 190. Specifically, the first mounting portion 159 is located on one side of the first inlet 140, and the sub-chamber 112 is located on the other side of the first inlet 140. The first mounting portion 159 has a mounting hole, and a communication port is provided at an end of the first mounting portion 159 close to the first inlet 140 and a first mounting port is provided at an end remote from the first inlet 140. The third control switch 150 extends into the mounting hole from the first mounting opening, and one end of the third control switch 150 close to the first inlet 140 extends out of the communication opening and abuts against a side wall of the first inlet 140, so that the third control switch 150 closes the first inlet 140. The first mounting portion 159 is mounted to the first housing to facilitate connection of the third control switch 150 to the first booster valve 190, resulting in a compact structure.

In one particular embodiment, as shown in fig. 5 and 7, third control switch 150 comprises a piston valve including piston cylinder 151, piston 152, and piston reset 153, piston cylinder 151 having piston chamber 1511 and boost port 1513 in communication with piston chamber 1511, first boost valve 190 in communication with piston chamber 1511 through boost port 1513. The piston 152 and the piston resetting portion 153 are both installed in a piston cavity 1511 of the piston cylinder 151, two ends of the piston resetting portion 153 are respectively fixedly connected with the piston 152 and the inner wall of the piston cylinder 151, and the piston 152 is installed in the piston cavity 1511 of the piston cylinder 151 in a sliding mode. The piston cylinder 151 extends into the mounting hole and is fixed relative to the mounting hole. The piston returning section 153 is made of an elastic material, such as a spring or a rubber column. The pressurizing hole 1513 is located on a side of the piston 152 near the first inlet port 140, and the piston restoring portion 153 is located on a side of the piston 152 away from the first inlet port 140. A plugging rod 154 is fixedly connected to one side of the piston 152 close to the first inlet 140, a plugging head 155 is arranged at one end of the plugging rod 154, and the plugging head 155 is used for covering the first inlet 140. Specifically, one end of the plugging rod 154, which is not provided with the plugging head 155, extends into the piston cylinder 151 and is fixedly connected with the piston 152, and the plugging head 155 covers the first inlet 140. The first pressurizing valve 190 is opened to allow pressurizing medium to enter the piston chamber 1511 through the pressurizing hole 1513, so that the piston 152 is pushed to a side away from the first inlet 140, the piston 152 presses the piston resetting portion 153 against the inner wall of the piston cylinder 151, the piston resetting portion 153 is compressed and deformed, the piston 152 drives the blocking rod 154 to move in a direction away from the first inlet 140, the blocking head 155 is further away from the first inlet 140, and the third control switch 150 is opened. After the first pressure increasing valve 190 is closed, the pressure medium stops entering the piston chamber 1511, the piston resetting portion 153 recovers deformation, and the piston resetting portion 153 applies elastic force to the piston 152, so that the piston 152 moves towards the direction close to the first inlet 140, and the blocking rod 154 is driven to move towards the direction close to the first inlet 140, so that the blocking head 155 covers the first inlet 140 again.

In a possible design, the two ends of the piston cylinder 151 distributed along the axis of the piston cylinder are respectively provided with a first through hole and a second through hole, the diameter of the first through hole is smaller than that of the second through hole, and the first through hole and the second through hole are communicated with the piston cavity 1511. The piston valve further comprises a connecting portion 1514, in the installation process, the piston 152 and the piston resetting portion 153 are sequentially arranged in the piston cavity 1511 through the second through hole, the connecting portion 1514 is fixed at the second through hole of the piston cylinder 151, and two ends of the piston resetting portion 153 are fixedly connected with the piston 152 and the connecting portion 1514 respectively. The first through hole is used for the plugging rod 154 to extend into the piston chamber 1511 and fixedly connect with the piston 152. The second through hole is used for allowing the piston 152 and the piston resetting part 153 to extend into the piston cavity 1511, so that the installation is convenient.

In one possible design, as shown in fig. 5, one end of the blocking head 155 close to the first inlet 140 is provided with a tapered surface, and one side of the first inlet 140 close to the blocking head 155 is correspondingly provided with a tapered hole, the diameter of the tapered hole is gradually reduced from the end close to the blocking head 155 to the end far from the blocking head 155, and the tapered surface of the blocking head 155 matches with the shape of the tapered hole. The communication position of the second pressurization valve 160 and the main chamber 111 is located between the first inlet 140 and the piston cylinder 151, when the blocking head 155 covers the first inlet 140, the conical surface of the blocking head 155 abuts against the conical hole of the first inlet 140, if the second pressurization valve 160 is opened, a pressurization medium enters the main chamber 111, so that the pressure in the main chamber 111 is increased, the blocking head 155 is pushed to move towards the direction close to the first inlet 140, the blocking head 155 is enabled to be in closer contact with the conical hole of the first inlet 140, the pressurization medium is prevented from being discharged from the first inlet 140, and the reliability of pressurization to the main chamber 111 is improved. The side, provided with the conical surface, of the plugging head 155 is provided with a mounting groove 1552, the mounting groove 1552 is used for mounting a plugging sealing ring 1551, and when the plugging head 155 covers the first inlet 140, the plugging sealing ring 1551 deforms under the extrusion of the plugging head 155 and the conical hole, so that a gap between the plugging head 155 and the conical hole is plugged, and the connection tightness between the plugging head 155 and the conical hole is improved.

In one embodiment, as shown in fig. 5 and 6, the dental chair disinfecting device further comprises a first limit plate 156 and a first limit screw 157. The first limit screw 157 is used to fix the first limit plate 156 to the first mounting portion 159. Specifically, the piston cylinder 151 extends into the mounting hole, one end of the connecting portion 1514 extends out of the first mounting opening, and one end of the connecting portion 1514 extending out of the first mounting opening is provided with a first clamping groove 1512. The first limit plate 156 is clamped in the first clamping groove 1512, and then the first limit plate 156 is fixedly connected with the first mounting portion 159 through the first limit screw 157, so that the first limit plate 156 covers the first mounting opening, and the piston cylinder 151 is fixed relative to the first mounting portion 159, that is, the piston cylinder 151 is fixed relative to the mounting hole.

In one possible design, as shown in fig. 6, the outer side wall of the piston cylinder 151 is provided with a first annular projection 1582, and the side of the first annular projection 1582 facing away from the piston cylinder 151 is provided with a first annular groove 1581, and the first annular groove 1581 is used for installing a first sealing ring 158. When the piston cylinder 151 is located in the mounting hole, the first sealing ring 158 is located between the first annular protrusion 1582 and the inner wall of the first mounting portion 159, and the first sealing ring 158 is deformed by the extrusion of the first annular protrusion 1582 and the inner wall of the first mounting portion 159, so that the first sealing ring 158 seals a gap between the piston cylinder 151 and the inner wall of the first mounting portion 159, and the connection sealing performance of the piston valve and the first mounting portion 159 is improved. The number of the first annular protrusions 1582 may be multiple, each first annular protrusion 1582 is correspondingly provided with a first annular groove 1581, and each first annular groove 1581 is correspondingly provided with a first sealing ring 158. The plurality of first annular grooves 1581 are uniformly distributed at intervals on the periphery of the piston cylinder 151 along the axis of the piston cylinder 151, so that the plurality of first sealing rings 158 can be uniformly installed at intervals on the periphery of the piston cylinder 151 along the axis of the piston cylinder 151, and the connection sealing performance of the piston valve and the first installation part 159 is further improved.

In one possible design, as shown in FIG. 3, the first housing includes a first housing cover 103 and a first bottom housing 104. The first bottom case 104 has a first inner cavity 313 and a first opening, which communicates with the first inner cavity 313. The first cover 103 covers the first opening, so that the first inner cavity 313 is located between the first cover 103 and the first bottom cover 104, and the first inner cavity 313 is the main cavity 111. The sub-chamber 112 and the first mounting portion 159 are both provided on the first cover 103. The first inlet 140 is located on a side wall of the first cover 103 where the sub-chamber 112 is disposed, and when the first cover 103 is covered on the first opening, the sub-chamber 112 is communicated with the main chamber 111 through the first inlet 140. The first housing cover 103 is fixedly connected to the first housing cover 104, and the fixed connection may be a snap connection, a screw (or bolt) connection, or a threaded connection.

The first cover 103 and the first bottom cover 104 are connected by bolts. Specifically, the first cover 103 is disc-shaped, the first bottom case 104 is cylindrical, and both the first cover 103 and the first bottom case 104 have flange portions. The flange portion of the first bottom case 104 is located on a peripheral side wall of an end of the first bottom case 104 close to the first cover 103, and the flange portion of the first bottom case 104 is disposed coaxially with the first bottom case 104 and extends outward in a radial direction of the first bottom case 104. The flange portion of the first cover 103 is located on the outer peripheral side wall of the first cover 103 at an end close to the first base 104, and the flange portion of the first cover 103 is disposed coaxially with the first cover 103 and extends outward in the radial direction of the first cover 103. A plurality of first through holes are formed in the flange portion of the first shell cover 103, a first groove is formed in one side, away from the first shell, of each through hole, the opening direction of each first groove is the direction away from the first shell 104, a plurality of second through holes are correspondingly formed in the flange portion of the first shell, a second groove is formed in one side, away from the first shell cover 103, of each through hole, and the opening direction of each second groove is opposite to the opening direction of the first groove. The quantity of bolt is a plurality of, and each bolt sets up in the one end correspondence of screw thread stretches into a first recess to loop through first through-hole and second through-hole and stretch out the second recess, and screw up through nut and bolt cooperation, so that first cap 103 and first drain pan 104 are fixed. The head of the bolt is located in the first groove, and the nut is located in the second groove, so that the bolt and the nut are respectively located in the outer surfaces of the first cover 103 and the first bottom case 104, and the occupied space of the outer surfaces of the first cover 103 and the first bottom case 104 is reduced. A plurality of first through-holes are ring array form and distribute on the flange portion of first cap 103, and a plurality of second through-holes also are ring array form and distribute on the flange portion of first drain pan 104, and the diameter of the ring array of first through-holes equals with the diameter of the ring array of second through-holes to when making first cap 103 and first drain pan fixed connection, can adjust well between every first through-hole and the second through-hole. The first through holes and the second through holes are distributed in a circular array, so that the first shell cover 103 and the first bottom shell 104 can be connected more stably.

In a possible design, a side wall of the first bottom shell 104 facing the first shell cover 103 is provided with an annular groove for mounting the second sealing ring 105, the diameter of the annular groove being smaller than the diameter of the circumferential array of second through holes. In the assembling process, the second sealing ring 105 is installed in the annular groove, then the first cover 103 is fixedly connected with the first bottom shell 104 through bolts, and the second sealing ring 105 is extruded by the first cover 103 and the first bottom shell 104 to deform, so that the second sealing ring 105 seals a gap between the first cover 103 and the first bottom shell 104, and the connection sealing performance of the first cover 103 and the first bottom shell 104 is improved.

In one possible design, the dental chair disinfection device further comprises a liquid storage cavity, the liquid storage cavity is communicated with the liquid mixing cavity, and the liquid storage cavity is used for being communicated with a water using end of the dental chair; a fourth control switch is arranged between the liquid storage cavity and the liquid mixing cavity and used for controlling the communication state of the liquid storage cavity and the liquid mixing cavity. Through setting up the stock solution chamber, can carry the mixed liquid in the mixed liquid chamber to the stock solution intracavity to the storage is in the stock solution chamber, through pressurizeing to the stock solution chamber, makes the mixed liquid in the stock solution chamber carry to the water end of dental chair. Specifically, as shown in fig. 8, the liquid storage cavity is provided with a second outlet 240, the second outlet 240 is communicated with the liquid inlet, the liquid outlet control switch is provided at the second outlet 240, and the liquid outlet control switch is used for controlling the open/close state of the second outlet 240 so as to control the communication state of the second outlet 240 and the liquid inlet. When the liquid outlet control switch is turned on, the mixed liquid in the liquid storage cavity is output to the liquid inlet hole through the second outlet 240, and the mixed liquid enters the pipeline of the dental chair and the water using end connected with the pipeline through the liquid inlet hole.

In one possible design, as shown in fig. 2, the liquid storage cavity is connected with a liquid storage pressurization pipeline, the liquid storage pressurization pipeline is communicated with the liquid storage cavity, and the liquid storage pressurization pipeline is used for introducing a pressurization medium into the liquid storage cavity. Specifically, the liquid storage pressurization pipeline is connected with a third pressurization valve 220, the third pressurization valve 220 is connected with a third pressurization pipeline 221, a pressurization medium is injected into the third pressurization pipeline 221, and the third pressurization valve 220 is used for controlling the conduction state of the third pressurization pipeline 221 and the liquid storage pressurization pipeline. The third pressure increasing valve 220 is in signal connection with the control system, and the control system is further configured to control the open/close state of the third pressure increasing valve 220 to control the conduction state of the third pressure increasing pipeline 221 and the liquid storage cavity. When the third pressure increasing valve 220 is opened, the third pressure increasing pipeline 221 is communicated with the liquid storage pressure increasing pipeline, and a pressure increasing medium in the third pressure increasing pipeline 221 sequentially passes through the third pressure increasing valve 220 and the liquid storage pressure increasing pipeline to enter the liquid storage cavity, so that the pressure of the liquid storage cavity is increased, and the mixed liquid in the liquid storage cavity is discharged from the second outlet 240.

In one embodiment, as shown in figures 1 and 8, the dental chair disinfection device further comprises a second housing, the reservoir being located within the second housing. The second casing passes through second installation department 360 with first casing and is connected, and the second casing has the second entry 230 with stock solution chamber intercommunication, and second installation department 360 is provided with and switches on the passageway, first export 170 and second entry 230 all with switch on the passageway intercommunication to make and mix liquid chamber and stock solution chamber intercommunication. A check valve 300 is provided between the first and second housings. Specifically, check valve 300 is disposed in the conducting channel of second installation portion 360, and check valve 300 is used for the mixed liquid of main chamber 111 to enter the liquid storage cavity.

In one possible design, the first housing, the second housing and the second mounting portion 360 may be detachably connected to each other, or alternatively. Preferably, the first housing, the second housing and the second mounting portion 360 are integrally formed, and the sealing performance of the dental chair disinfection device can be further improved by the integrally formed injection molding structure, so that the step of assembling the first housing and the second housing together can be omitted, and the assembling efficiency can be improved.

In one embodiment, as shown in fig. 9 to 11, the check valve 300 includes a cylinder 310, a sliding portion 320, and an elastic restoring portion 330, wherein an inner cavity 313, an inlet hole 314, and an outlet hole 315 are disposed in the cylinder 310, the inlet hole 314 and the outlet hole 315 are both communicated with the inner cavity 313, the inlet hole 314 is used for communicating with the first outlet 170, and the outlet hole 315 is used for communicating with the second inlet 230. The sliding part 320 is slidably disposed in the inner cavity 313, the elastic restoring part 330 is disposed in the inner cavity 313, and two ends of the elastic restoring part 330 are fixedly connected to the sliding part 320 and the inner wall of the cylinder 310, respectively. The cylinder 310 is installed in and fixed with respect to the conduction passage. One side of the sliding part 320 is fixedly connected with the elastic restoring part 330, and the other side is used for covering the first outlet 170 so as to close the first outlet 170. When the first pressure increasing valve 190 is opened, the pressure increasing medium enters the main chamber 111 to increase the pressure of the main chamber 111, the mixed liquid in the main chamber 111 pushes the sliding part 320 from the first outlet 170, so that the sliding part 320 moves in a direction away from the first outlet 170, the first outlet 170 is opened, the mixed liquid sequentially passes through the first outlet 170 and the liquid inlet hole 314 to enter the inner cavity 313, and the elastic resetting part 330 is squeezed by the sliding part 320 and the inner wall of the cylinder 310 to generate deformation compression. The mixed liquid enters the inner cavity 313, then enters the second inlet 230 through the liquid outlet hole 315, and enters the liquid storage cavity through the second inlet 230. When the first pressure increasing valve 190 is closed, the mixed liquid stops being discharged from the first outlet 170, that is, the mixed liquid stops pushing the sliding part 320, and the elastic resetting part 330 recovers deformation to push the sliding part 320 to move toward the first outlet 170, so that the sliding part 320 covers the first outlet 170 again to prevent the mixed liquid in the liquid storage chamber from flowing back to the mixed liquid chamber. The elastic restoring portion 330 may be a spring, a rubber column, or an elastic sheet.

In one embodiment, as shown in fig. 12, the second mounting portion 360 is provided with a second mounting port, the second mounting port is communicated with the communication passage, and the cylinder 310 extends into the communication passage through the second mounting port. The dental chair disinfection apparatus further comprises a second limiting plate 340 and a second limiting screw 350, and the cylinder body 310 is fixedly connected with the second mounting portion 360 by the second limiting plate 340 and the second limiting screw 350. Specifically, one end of the cylinder body 310 extends out of the second mounting opening, one end of the cylinder body 310 extending out of the second mounting opening is provided with a second locking groove 312, the second limiting plate 340 is locked in the second locking groove 312, and the second limiting plate 340 is fixed to the second mounting portion 360 through a second screw, so that the second limiting plate 340 covers the second mounting opening, and therefore the cylinder body 310 is fixed relative to the second mounting portion 360, that is, the cylinder body 310 is fixed relative to the conduction channel.

In a possible design, the dental chair disinfection device further comprises a third sealing ring 316, and a second annular groove 311 is arranged on the outer side of the cylinder body 310, and the second annular groove 311 is used for installing the third sealing ring 316. When the third sealing ring 316 is installed in the second annular groove 311, a part of the material of the third sealing ring 316 protrudes out of the outer surface of the cylinder body 310, so that when the cylinder body 310 is installed in the conduction channel, the third sealing ring 316 is contacted with the inner side wall of the conduction channel and deforms under the extrusion of the inner side wall of the conduction channel and the outer side wall of the cylinder body 310, so that the gap between the cylinder body 310 and the conduction channel is sealed by the third sealing ring 316, and the connection sealing performance of the cylinder body 310 and the conduction channel is improved. The number of the second annular grooves 311 may be multiple, specifically, two second annular grooves 311 may be provided, the two second annular grooves 311 are distributed at intervals along the axis of the cylinder body 310 at one end of the cylinder body 310 close to the second mounting port, and each second annular groove 311 is correspondingly provided with one third sealing ring 316. By providing the plurality of second annular grooves 311 and the plurality of third seal rings 316, the connection sealing property between the cylinder 310 and the communication passage is further improved.

In a possible design, as shown in fig. 9, the dental chair disinfection apparatus further includes an elastic diaphragm 250, the elastic diaphragm 250 is located in the liquid storage cavity, the elastic diaphragm 250 divides the liquid storage cavity into a first cavity 211 and a second cavity 212, the second outlet 240 and the second inlet 230 are both communicated with the second cavity 212, the mixed liquid in the main cavity 111 enters the second cavity 212 after passing through the liquid inlet control switch, and the liquid storage pressurization pipeline is communicated with the first cavity 211. When the third pressure increasing valve 220 is opened, the pressurized medium sequentially passes through the third pressure increasing valve 220 and the liquid storage pressure increasing pipe to enter the first chamber 211, so as to pressurize the first chamber 211. The pressure of the first chamber 211 is increased to deform the elastic diaphragm 250 and protrude toward the second chamber 212, so that the volume of the first chamber 211 is increased, the volume of the second chamber 212 is decreased, and the pressure in the second chamber 212 is increased to discharge the mixed liquid in the second chamber 212 from the second outlet 240. The elastic diaphragm 250 can prevent the pressurized medium from directly contacting the mixed liquid in the second chamber 212, so as to prevent the mixed liquid in the second chamber 212 from being polluted; and because the elastic diaphragm 250 separates the pressurized medium from the mixed liquid, the pressure in the second chamber 212 is increased more gradually by pressurizing the elastic diaphragm 250, so that the output of the mixed liquid in the second chamber 212 is more stable. The elastic membrane 250 is made of an elastic material, such as a rubber material, a soft plastic material, or a resin material.

In one possible design, the second housing includes a second housing cover 201 and a second bottom housing 202, the second bottom housing 202 has a second inner cavity 313 and a second opening, and the second inner cavity 313 and the second opening are communicated. In the assembling process, the elastic membrane 250 is laid on the outside of the second opening of the second bottom case 202 so that the elastic membrane 250 covers the second opening, and then the second case cover 201 is covered on the outside of the elastic membrane 250 so that the peripheral edge of the elastic membrane 250 is pressed against the first bottom case 104 by the first case cover 103.

In a specific embodiment, as shown in fig. 9, a side wall of the second housing cover 201 close to the second housing cover 202 is provided with a first boss, the first boss is circular ring-shaped, and the first boss surrounds an edge of the side wall of the second housing cover 201. A second boss is arranged on one side wall, far away from the second shell cover 201, of the first boss, the second boss is circular, the first boss and the second boss are coaxially arranged, and the outer diameter of the first boss is larger than that of the second boss. When the first cover 103 is mounted on the first base 104, the second bosses protrude into the first inner cavity 313 before the first bosses. The second bottom case 202 is provided with a mounting platform, which is located in the second inner cavity 313 and protrudes from an inner sidewall of the second bottom case 202. The mounting platforms may in particular be annular and distributed along the circumference of the axis of the second inner cavity 313. During assembly, the elastic membrane 250 is laid outside the second opening of the second bottom case 202, and the first boss is inserted into the first inner cavity 313, so that the second case cover 201 is limited relative to the second bottom case 202. When the first boss is inserted into the first inner cavity 313, the second boss presses the elastic diaphragm 250 against the mounting platform, so that the elastic diaphragm 250 is fixed. A gap is formed between the outer side wall of the second boss and the inner side wall of the second bottom shell 202, when the elastic membrane 250 is pressed on the mounting platform by the second boss, the peripheral edge of the elastic membrane 250 is located in the gap, and the peripheral edge of the elastic membrane 250 is squeezed by the outer side wall of the second boss and the inner side wall of the second bottom shell 202 to deform, so that the peripheral edge of the elastic membrane 250 seals the gap between the outer side wall of the second boss and the inner side wall of the second bottom shell 202, and the sealing performance between the second bottom shell 202 and the second bottom shell 201 is improved. After the first boss extends into the second inner cavity 313 and the second boss presses the elastic diaphragm 250 against the mounting platform, the second cover 201 and the second base 202 are screwed tightly by screws, so that the second base 202 and the second cover 201 are fixed, and the elastic diaphragm 250 is fixed between the second base 202 and the second cover 201. The chamber formed between the second housing cover 201 and the elastic diaphragm 250 is a first chamber 211, and the chamber formed between the elastic diaphragm 250 and the second housing 202 is a second chamber 212. The first boss extends into the first inner cavity 313, so that the second bottom shell 202 and the second shell cover 201 can be aligned conveniently, and the assembly efficiency is improved. By providing the second boss, the second boss presses the peripheral edge of the elastic membrane 250 against the inner sidewall of the second bottom case 202, so that the connection stability of the elastic membrane 250 is better.

In one possible design, as shown in fig. 8 and 9, the dental chair disinfection apparatus includes a pressure detector 260, the pressure detector 260 is in communication with the second chamber 212, the pressure detector 260 is configured to detect the pressure in the second chamber 212, the pressure detector 260 is in signal connection with a control system, and the control system is further configured to control the opening and closing states of the second pressure increasing valve 160 and the third pressure increasing valve 220 according to the pressure value fed back by the pressure detector 260. The pressure detector 260 may be a pressure switch or a pressure sensor or other device capable of detecting the ambient pressure. The pressure detector 260 may be a pressure switch or a pressure sensor.

The following control system controls the open/close states of the second pressure increasing valve 160 and the third pressure increasing valve 220 according to the pressure values, both on the premise that the liquid level in the main chamber 111 is higher than the minimum liquid level height value. In one embodiment, the control system controls the second pressure increasing valve 160 to close when the liquid level in the main chamber 111 reaches or is less than the first minimum liquid level, regardless of the pressure in the second chamber 212. The control system is preset with a maximum pressure value and a minimum pressure value. When the pressure value is greater than the minimum pressure value and less than the maximum pressure value, the control system controls the second pressure increasing valve 160 to open, so as to continuously deliver the mixed liquid in the main chamber 111 to the second chamber 212, and the liquid in the second chamber 212 increases, so that the pressure in the second chamber 212 also gradually increases, and thus the mixed liquid in the second chamber 212 can also be output from the second outlet 240. When the pressure value reaches the maximum pressure value, the control system controls the second pressure increasing valve 160 to close, the third pressure increasing valve 220 to open, namely stops increasing the pressure to the main chamber 111, stops inputting the mixed liquid to the second chamber 212, starts increasing the pressure to the first chamber 211, continuously outputs the mixed liquid in the second chamber 212 from the liquid storage end until the pressure value reaches or is lower than the minimum pressure value, the control system controls the third pressure increasing valve 220 to close, controls the second pressure increasing valve 160 to open, and accordingly continuously transmits the mixed liquid in the main chamber 111 to the second chamber 212.

In one possible design, as shown in fig. 1 and 2, the dental chair disinfection apparatus further comprises a sound-deadening box 510 and a sound-deadening duct. The sound-deadening pipes include a sub-sound-deadening pipe 520 and a main sound-deadening pipe 530, and the number of the sub-sound-deadening pipes 520 is plural. Specifically, as shown in fig. 1, the number of the sub muffler pipes 520 is three, and one sub muffler pipe 520 is connected to each of the first pressure increasing valve 190, the second pressure increasing valve 160, and the third pressure increasing valve 220. The dental chair sterilizing apparatus further comprises a communicating box, the three sub-muffling pipes 520 are all communicated with the communicating box, and both ends of the main muffling pipe 530 are respectively communicated with the muffling box 510 and the communicating box, so that the first pressure increasing valve 190, the second pressure increasing valve 160, the third pressure increasing valve 220 are communicated with the muffling box 510. The silencing box 510 is provided therein with a flexible substance for absorbing a part of sound generated by the flow of the pressurizing medium when the first pressurizing valve 190, the second pressurizing valve 160, and the third pressurizing valve 220 are opened. Taking the first pressure increasing valve 190 as an example, when the first pressure increasing valve 190 is opened, part of the pressure increasing medium in the first pressure increasing pipe 191 flows into the sub-muffler pipe 520 and finally enters the muffler box 510, and at least one discharge port is provided on either side of the muffler box 510, and the pressure increasing medium enters the muffler box 510, passes through the flexible substance and finally is discharged from the discharge port. The flexible substance can be sponge block, foam or cotton.

In one possible design, the control system includes a controller, which may include a circuit board, chip, etc. structure. The disinfecting device for the dental chair further comprises a protection box 610, the controller is installed in the protection box 610, and the protection box 610 is used for protecting the circuit board.

In one embodiment, the dental chair disinfection apparatus further comprises a mounting base 600, wherein the mounting base 600 is used for mounting the first bottom shell 104 and the second bottom shell 202. The protection case 610, the sound-deadening case 510, and the like are provided on the upper surface of the second housing cover 201, and the first pressure-increasing valve 190, the second pressure-increasing valve 160, and the third pressure-increasing valve 220 are provided on the upper surface of the first housing cover 103. By mounting the protection case 610, the sound-muffling case 510, the first pressure-increasing valve 190, the second pressure-increasing valve 160, and the third pressure-increasing valve 220 on the upper surfaces of the first housing cover 103 and the second housing cover 201, respectively, the space above the first housing cover 103 and the second housing cover 201 is effectively utilized, resulting in a compact structure and a small space occupation. By installing the first bottom case 104 and the second bottom case 202 on the mounting seat 600, it is convenient to integrally disassemble and assemble the dental chair sterilizing apparatus, and the installation efficiency is improved.

The present embodiment also provides a dental chair comprising a dental chair disinfection apparatus. The dental chair disinfection apparatus comprises a first housing, a first control switch 120, a second control switch 130, a control system and a height detection structure. The first shell is provided with a liquid mixing cavity, and the first shell is provided with a first liquid inlet end 101 and a second liquid inlet end 102 which are communicated with the liquid mixing cavity. The first control switch 120 is installed between the first liquid inlet end 101 and the first casing, and is used for controlling the communication state between the first liquid inlet end 101 and the liquid mixing cavity. The second control switch 130 is installed between the second liquid inlet end 102 and the first shell, and is used for controlling the communication state between the second liquid inlet end 102 and the liquid mixing cavity; the control system is in signal connection with the first control switch 120 and the second control switch 130 respectively (the signal connection may be through a data line or wireless connection, etc.), and the control system is configured to control on/off states of the first control switch 120 and the second control switch 130. The height detection structure is in signal connection with the control system, the height detection structure is used for detecting the height of the dental chair, and the control system is further used for adjusting the opening and closing states of the first control switch 120 and the second control switch 130 according to the height of the dental chair fed back by the height detection structure. Because the dental chair disinfection device can automatically prepare the disinfectant, the automation degree is higher, and therefore, the automation degree of the dental chair is relatively higher.

In one embodiment, the dental chair comprises a liquid inlet, a pipeline and a water end, wherein two ends of the pipeline are respectively connected with the liquid inlet and the water end. The quantity of pipeline can be many, and many pipelines are connected with a water end respectively, and the one end of many pipelines all gathers and is gone into liquid hole department and with going into the liquid hole intercommunication finally. In an alternative embodiment, the second outlet 240 is connected to the liquid inlet of the dental chair, so that the disinfecting liquid in the second chamber 212 flows through the pipes to the water consuming ends after entering the liquid inlet through the second outlet 240, thereby disinfecting the pipes of the dental chair and the water consuming ends connected to the pipes.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A dental chair disinfection apparatus, comprising:

2. The dental chair disinfection apparatus of claim 1, further comprising a height detection structure for detecting a height of the dental chair; the height detection structure is in signal connection with the control system, and the control system is used for adjusting the opening and closing states of the first control switch and the second control switch according to the height of the dental chair fed back by the height detection structure.

3. The dental chair disinfection device as claimed in claim 2, wherein the height detection structure comprises a lifting adjustment motor for controlling the lifting of the dental chair, the lifting adjustment motor is in signal connection with the control system, and the control system controls the on/off states of the first control switch and the second control switch according to the lifting adjustment amount fed back by the lifting adjustment motor.

4. The dental chair disinfection device as claimed in claim 1, further comprising a first liquid level sensor, wherein the first liquid level sensor is installed in the liquid mixing chamber and is in signal connection with the control system, the first liquid level sensor is used for detecting the liquid level height in the liquid mixing chamber, and the control system controls the on-off state of the first control switch and the second control switch according to the liquid level height information fed back by the first liquid level sensor.

5. The dental chair disinfection apparatus of claim 1, further comprising a reservoir coupled to the first inlet, the reservoir configured to store a first liquid.

6. The dental chair disinfection apparatus of claim 5, wherein a second liquid level sensor is disposed within the reservoir for detecting a liquid level within the reservoir, the control system being in signal communication with the second liquid level sensor.

7. The dental chair disinfecting device of claim 1, wherein the first housing has a first inlet through which at least one of the first inlet port and the second inlet port communicates with the liquid mixing chamber; the dental chair disinfection device comprises a third control switch, the third control switch is arranged at the first inlet and is used for controlling the opening and closing state of the first inlet, and the third control switch is in signal connection with the control system.

8. The dental chair disinfecting device of claim 7, further comprising a first pressure increasing valve connected to the third control switch, wherein the first pressure increasing valve is in signal connection with the control system, and wherein the control system controls the on-off state of the third control switch by controlling the on-off state of the first pressure increasing valve, so as to control the on-off state of the first inlet.

9. The dental chair disinfection device as claimed in any one of claims 1-8, wherein the dental chair disinfection device further comprises a liquid storage cavity, the liquid storage cavity is communicated with the liquid mixing cavity, the liquid storage cavity is used for being communicated with a water using end of the dental chair, a fourth control switch is arranged between the liquid storage cavity and the liquid mixing cavity, the fourth control switch is used for controlling the communication state of the liquid storage cavity and the liquid mixing cavity, the liquid storage cavity is connected with a liquid storage pressurizing pipeline, and the liquid storage pressurizing pipeline is used for introducing pressurizing medium into the liquid storage cavity.

10. A dental chair, comprising a dental chair disinfection device, the dental chair disinfection device comprising:

the height detection structure is in signal connection with the control system and used for detecting the height of the dental chair, and the control system is further used for adjusting the opening and closing states of the first control switch and the second control switch according to the height of the dental chair fed back by the height detection structure.