Dental chair water-gas separation system, dental chair and method of using the dental chair water-gas separation system

Abstract

The present invention relates to the field of medical device technology, and in particular to a dental chair water-gas separation system, a dental chair, and a method for using the dental chair water-gas separation system. The dental chair water-gas separation system comprises: a tank body has a liquid storage cavity inside, and the outer wall of the tank body has a water-gas inlet, a liquid discharge port, and an exhaust port connected to the liquid storage cavity; a pressure mechanism is used to output a negative pressure source and a positive pressure source, and the negative pressure source is connected to the exhaust port, so that a negative pressure is formed in the liquid storage cavity; the positive pressure source is connected to the liquid storage cavity, so that a positive pressure is formed in the liquid storage cavity, so as to provide a driving force for the liquid in the liquid storage cavity to flow to the liquid discharge port. The dental chair water-gas separation system of the present invention is connected to a positive pressure source during liquid discharge, so that the liquid is squeezed to accelerate the discharge of the tank body, which effectively shortens the liquid discharge time compared to the traditional method of relying on gravity to discharge liquid, thereby shortening the time of disconnection of the negative pressure source, making the doctor's operation smoother, improving the doctor's experience, and avoiding the problem of increased fluid accumulation in the patient's mouth due to long liquid discharge time, thereby alleviating the patient's discomfort.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a dental chair water-gas separation system, a dental chair, and a method for using the dental chair water-gas separation system. Background Art

[0002] The dental comprehensive treatment chair is also called a dental comprehensive treatment machine, usually referred to as a dental chair. As an important equipment in the field of modern dental medicine for the inspection and treatment of oral surgery and oral diseases, the dental chair allows patients to lie flat, making it convenient for doctors to observe the patient's oral problems. When treating patients, it is often necessary to suck the liquid in the patient's mouth with negative pressure, and the water vapor enters the dental chair through the drainage system. Some dental chairs have a water-gas separation device connected to the machine room, and then enter the water-gas separation device in the machine room for water-gas separation. Some dental chairs cannot or are not allowed to connect to the water-gas separation device in the machine room, so a small water-gas separation device needs to be added to the dental chair. The commonly used water-gas separation equipment is provided with a liquid storage tank, and a drain port is opened at the bottom of the liquid storage tank. Usually, when the liquid in the liquid storage tank reaches the highest liquid level, the liquid level probe will be triggered to conduct electricity, thereby controlling the drain port to open and discharge the liquid in the liquid storage tank. See Chinese Patent, Application Number: 202122707574.0. However, in actual use, the drainage pipe connected to the drainage port is prone to slow drainage. For example, the ideal drainage time is several seconds, but the slow drainage of the drainage pipe causes the drainage time to reach tens of seconds, thus affecting actual use.

[0003] In addition, due to the presence of various impurities and reagents during treatment, the liquid sucked into the liquid storage tank is prone to foam. The foam often floats on the liquid surface and adheres to the side wall of the liquid storage tank and the liquid level probe. At this time, even if the liquid is drained, the foam is attached to the liquid level probe, causing the high liquid level signal to remain effective, thereby causing the entire system to fail to work properly. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a dental chair water vapor separation system, a dental chair and a method for using the dental chair water vapor separation system to solve the problem that the existing dental chair water vapor separation system has a slow drainage speed, affecting normal use.

[0005] A first aspect of the present invention provides a dental chair water-gas separation system, comprising:

[0006] A tank body, wherein a liquid storage cavity is formed inside the tank body, and an outer wall of the tank body is provided with a water vapor inlet, a liquid discharge port and an air discharge port connected to the liquid storage cavity;

[0007] The pressure mechanism is used to output a negative pressure source and a positive pressure source, wherein the negative pressure source is connected to the exhaust port so that a negative pressure is formed in the liquid storage chamber; the positive pressure source is connected to the liquid storage chamber so that a positive pressure is formed in the liquid storage chamber to provide a driving force for the liquid in the liquid storage chamber to flow toward the discharge port.

[0008] Preferably, the exhaust port and the water vapor inlet are both arranged at the upper part of the tank body, and the liquid discharge port is arranged at the lower part of the tank body;

[0009] When the negative pressure source is connected, the positive pressure source is disconnected, water vapor enters the liquid storage chamber through the water vapor inlet, and the gas in the liquid storage chamber is discharged through the exhaust port; when the positive pressure source is connected, the negative pressure source is disconnected, and the liquid in the liquid storage chamber flows out of the discharge port faster under the pressure of the positive pressure source.

[0010] Preferably, it also includes:

[0011] The sensing component is communicatively connected with the pressure mechanism, and the sensing component includes a liquid level probe that can extend into the liquid in the liquid storage chamber, and the liquid level probe is formed with a liquid level sensing part. When the liquid in the liquid storage chamber increases and the liquid level rises to trigger the liquid level sensing part, the negative pressure source is disconnected.

[0012] Preferably, a positive pressure air port connected to the positive pressure source is provided in the tank body, and the liquid level probe is arranged on the side of the positive pressure air port, so that the gas blown out from the positive pressure air port can clean the liquid level probe.

[0013] Preferably, a plurality of the liquid level probes are provided, and at least some of the liquid level probes extend into the liquid storage cavity at different lengths; and the plurality of liquid level probes are arranged at circumferential intervals around the positive pressure air port.

[0014] Preferably, the tank body comprises a cover body and a tank body; the water vapor inlet and the exhaust port are arranged on the cover body, and the liquid discharge port and the liquid storage cavity are arranged on the tank body;

[0015] An accommodating space is formed inside the cover body, and a circuit board connected to the sensing element is arranged in the accommodating space;

[0016] The cover body is provided with a passage connecting the accommodating space and the liquid storage cavity; the sensing element comprises a base connected to the liquid level probe, the base is installed in the accommodating space, and the liquid level probe extends into the liquid storage cavity through the passage.

[0017] Preferably, the positive pressure air port is opened on the base, and the channel is formed as an annular sleeve structure to surround the circumferential side of the liquid level probe.

[0018] Preferably, it also includes:

[0019] A first control valve, disposed at the liquid discharge port, wherein the first control valve is in an open state when the positive pressure source is connected to the liquid storage chamber;

[0020] The second control valve is arranged at the exhaust port. When the second control valve is in a closed state, the pressure in the liquid storage chamber is restored to normal pressure.

[0021] A second aspect of the present invention provides a dental chair, comprising the dental chair water-gas separation system described in any one of the above technical solutions.

[0022] A third aspect of the present invention provides a method for using a dental chair water-gas separation system, which is applied to the dental chair water-gas separation system according to any of the above technical solutions, and the method comprises:

[0023] The negative pressure source is connected to the exhaust port, so that negative pressure is formed inside the liquid storage chamber, which provides power for water vapor to enter the tank body through the water vapor inlet; the gas entering the tank body is directly discharged through the exhaust port, and the liquid entering the tank body is accumulated in the liquid storage chamber;

[0024] When the liquid in the liquid storage chamber needs to be drained, the negative pressure source is disconnected and the positive pressure source is introduced into the liquid storage chamber to provide power for the liquid in the liquid storage chamber to flow toward the drain port, so that the liquid is discharged from the drain port under the combined action of gravity and positive pressure to speed up the drainage.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The dental chair water vapor separation system of the present invention has a liquid storage chamber formed in the tank body, and a water vapor inlet, a liquid discharge port and an exhaust port connected to the liquid storage chamber are formed on the outer wall, and the negative pressure source is connected to the exhaust port, so that negative pressure is formed in the liquid storage chamber, so that water vapor is sucked into the liquid storage chamber through the water vapor inlet, and the gas sucked in the liquid storage chamber is directly discharged from the exhaust port, and the liquid in the liquid storage chamber gradually accumulates and increases. When the liquid needs to be discharged from the discharge port, the negative pressure source is disconnected from the positive pressure source and connected to the liquid storage chamber, so that positive pressure is formed in the liquid storage chamber, so as to provide a driving force for the liquid in the liquid storage chamber to flow to the discharge port, so that the liquid is squeezed to be discharged from the tank body faster. Compared with the traditional method of relying on gravity to discharge liquid, the drainage time is effectively shortened, thereby shortening the time of disconnecting the negative pressure source, making the doctor's operation smoother and improving the doctor's experience. It also avoids the problem of increased fluid accumulation in the patient's mouth due to long drainage time, and alleviates the patient's discomfort. The dental chair using the dental chair water vapor separation system can improve the doctor's experience and make the doctor's operation smoother.

[0027] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a water-gas separation system for a dental chair provided by an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the explosion structure of the water-gas separation system for a dental chair provided by an embodiment of the present invention;

[0031] Figure 3 A schematic structural diagram of a water-gas separation system for a dental chair provided by an embodiment of the present invention cut along a cross section arranged parallel to the axial cross section of the tank body;

[0032] Figure 4 A schematic structural diagram of a water-gas separation system for a dental chair provided by an embodiment of the present invention cut along the axial cross section of the tank body;

[0033] Figure 5 A schematic diagram of an explosion structure of a water-gas separation system for a dental chair provided by an embodiment of the present invention cut along the axial section of the tank body;

[0034] Figure 6 A schematic diagram of the structure of the induction component in the water-gas separation system of a dental chair provided by an embodiment of the present invention;

[0035] Figure 7 A schematic cross-sectional view of the structure of the induction component in the water-gas separation system of a dental chair provided in an embodiment of the present invention.

[0036] Icons: 10-tank body; 11-cover body; 110-accommodating space; 111-channel; 112-guide part; 113-protective shell; 12-tank body; 120-liquid storage chamber; 101-water vapor inlet; 102-liquid discharge port; 103-exhaust port; 104-positive pressure air port; 20-sensing element; 21-base; 22-liquid level probe; 30-circuit board; 41-first control valve; 42-second control valve; 43-third control valve. DETAILED DESCRIPTION

[0037] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0038] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0039] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0040] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0041] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0042] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0043] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0044] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0045] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0046] According to a first aspect of the present invention, a dental chair water-gas separation system is provided, which comprises a tank body 10 and a pressure mechanism.

[0047] Hereinafter, the specific structures of the above-mentioned components of the dental chair water-gas separation system according to the present embodiment will be described.

[0048] In this embodiment, if Figures 1 to 5 As shown, the tank body 10 can be formed into a cylindrical or polygonal prism tank structure, and a liquid storage chamber 120 is formed inside the tank body 10 for accommodating water vapor inhaled from the patient's mouth. The outer wall of the tank body 10 is provided with a water vapor inlet 101, a liquid discharge port 102 and an exhaust port 103 connected to the liquid storage chamber 120, and the water vapor inlet 101, the liquid discharge port 102 and the exhaust port 103 can all be connected via pipelines.

[0049] It should be noted that Figure 3 and Figure 4 The internal structure of the tank 10 is shown in FIG. Figure 3 It is a structural schematic diagram of the water-gas separation system of the dental chair cut along a section arranged parallel to the axial section of the tank body 10 (that is, the section does not pass through the central axis of the tank body 10 and is arranged at a distance from the axial section of the tank body 10); Figure 4 It is a schematic structural diagram of a dental chair water-gas separation system cut along the axial section of the tank body 10 , wherein the axial section is a section passing through the central axis of the tank body 10 .

[0050] The pressure mechanism is used to output a negative pressure source and a positive pressure source. The device for outputting the negative pressure source can be a negative pressure machine, and the device for outputting the positive pressure source can be a fan. The negative pressure source is connected to the exhaust port 103, so that negative pressure is formed in the liquid storage chamber 120, so that water vapor is sucked into the liquid storage chamber 120 through the water vapor inlet 101. The gas sucked into the liquid storage chamber 120 can be directly discharged from the exhaust port 103 under the action of the negative pressure source; when the liquid in the liquid storage chamber 120 gradually accumulates and needs to be discharged from the liquid discharge port 102, the negative pressure source is disconnected. The positive pressure source is connected to the liquid storage chamber 120. The positive pressure source is connected to the liquid storage chamber 120 so that positive pressure is formed in the liquid storage chamber 120, so as to provide a driving force for the liquid in the liquid storage chamber 120 to flow toward the discharge port 102. In this way, the liquid is squeezed to be discharged from the tank body 10 faster. Compared with the traditional method of relying on gravity to discharge liquid, the drainage time is effectively shortened, thereby shortening the time for the negative pressure source to be disconnected, making the doctor's operation smoother, improving the doctor's experience, and avoiding the problem of increased fluid accumulation in the patient's mouth due to long drainage time, thereby alleviating patient discomfort.

[0051] In this embodiment, when the negative pressure source is connected, the positive pressure source is disconnected, water vapor enters the liquid storage chamber 120 through the water vapor inlet 101, and the gas in the liquid storage chamber 120 is discharged through the exhaust port 103; when the positive pressure source is connected, the negative pressure source is disconnected, and the liquid in the liquid storage chamber 120 flows out of the liquid discharge port 102 faster under the pressure of the positive pressure source.

[0052] In a preferred embodiment, the water vapor inlet 101 is arranged at the upper part of the tank body 10, and the water vapor entering the tank body 10 through the water vapor inlet 101 is sucked into the liquid storage chamber 120; the exhaust port 103 is arranged at the upper part of the tank body 10, and the gas entering the tank body 10 can be discharged from the exhaust port 103; the drain port 102 is arranged at the lower part of the tank body 10 to ensure that the liquid in the liquid storage chamber 120 can be completely discharged. Preferably, the bottom of the tank body 10 is arranged at an angle to increase the speed at which the liquid flows into the drain port 102 to a certain extent.

[0053] In this embodiment, if Figures 1 to 5As shown, the dental chair water-gas separation system also includes a first control valve 41 and a second control valve 42. The first control valve 41 can be a solenoid valve and / or a one-way valve. The first control valve 41 is arranged at the drain port 102 to prevent the liquid in the pipeline from flowing back. When the positive pressure source is connected to the liquid storage chamber 120, that is, when drainage is required, the first control valve 41 is in an open state.

[0054] The second control valve 42 is arranged at the exhaust port 103. The second control valve 42 can adopt a solenoid valve and / or a one-way valve. When the second control valve 42 is in a closed state, the negative pressure source is disconnected, and the pressure in the liquid storage chamber 120 is restored to normal pressure. When the positive pressure source is connected, the positive pressure value in the liquid storage chamber 120 increases to squeeze the liquid and accelerate the liquid to flow out of the discharge port 102.

[0055] Furthermore, in this embodiment, if Figures 1 to 5 As shown, the dental chair water-gas separation system also includes a third control valve 43, which is arranged at the water-gas inlet 101. The third control valve 43 can adopt a solenoid valve and / or a one-way valve to prevent the gas in the tank body 10 from flowing back into the dental chair pipe through the water-gas inlet 101 or even being discharged through the dental chair pipe.

[0056] In this embodiment, a positive pressure air port 104 connected to a positive pressure source is provided in the tank body 10. The positive pressure air port 104 is preferably provided at the upper part of the tank body 10, so that when the positive pressure source is connected, the direction of the pressure can act vertically on the liquid surface, thereby effectively improving the rate of liquid discharge.

[0057] When the positive pressure air port 104 is connected to the positive pressure source, the negative pressure source is disconnected. The negative pressure source can be disconnected by turning off the negative pressure machine or closing the second control valve 42 as described above; the positive pressure air port 104 sprays gas, which significantly increases the pressure in the tank body 10, thereby squeezing the liquid in the tank body 10 so that it is quickly discharged from the drain port 102.

[0058] It should be noted that, in the present embodiment, a solenoid valve for controlling the on / off of the positive pressure gas port 104 may be provided, and the solenoid valve is used to control whether gas is ejected from the positive pressure gas port 104. The solenoid valve may be provided on a pipeline connected to the positive pressure gas port 104 for inputting a positive pressure source, and the solenoid valve is used to control whether the pipeline for inputting the positive pressure source feeds gas into the positive pressure gas port 104 and allows the gas to enter the tank body 10.

[0059] In this process, when the volume of the tank body 10 is about 500ml, the liquid in the liquid storage chamber 120 is usually about 240ml and needs to be drained. After multiple tests, the drainage speed is 3 seconds to 3.5 seconds. In the prior art, when the tank body 10 and the drainage volume are the same, the drainage time of the traditional gravity drainage method is 7 seconds to 9 seconds. Although the drainage method of introducing a positive pressure source in this embodiment is only a few seconds faster than the traditional drainage method, the downtime during drainage is shortened, which can improve the doctor's experience and reduce the impact on the doctor's operation during the treatment process. For example, in the process of applying the dental chair water-gas separation system of the present application, when the doctor uses the dental handpiece, he needs to suck saliva (i.e., absorb the saliva in the patient's mouth and the water sprayed by the dental handpiece) while working. If the liquid in the tank body 10 just reaches the high liquid level that needs to be drained at this time, it is necessary to stop the negative pressure work and switch to drainage work. It is only about 3 seconds that the saliva cannot be sucked, and the liquid in the patient's mouth will not be particularly large, which will not make the patient feel uncomfortable, and the doctor does not have to stop the dental handpiece. However, if gravity drainage is used, the fastest drainage time takes at least 7 seconds. During this 7 seconds, a lot of fluid accumulates in the patient's mouth, making the patient feel uncomfortable. This will also affect the doctor's treatment. The doctor will stop the dental handpiece for a few seconds and then work again. Therefore, it will affect the doctor's operation to a certain extent. Compared with the doctor who never has to stop the dental handpiece, the doctor's experience is reduced.

[0060] Thus, in this embodiment, when the high liquid level is reached and drainage is required, the drainage time can be set to 4 seconds in the system program, and then the negative pressure source is automatically connected to immediately continue to enter the working state. The traditional gravity drainage method can also be used to drain water in 4 seconds, but 4 seconds cannot completely empty the liquid. When the set drainage time is reached, the tank liquid is not completely discharged. At this time, the negative pressure is connected, so that the negative pressure in the tank instantly resets the one-way valve or baffle located at the liquid outlet. Since there is still undischarged liquid in the tank, the one-way valve or baffle hits the liquid during the reset, causing the noise to increase significantly, which can reach 60 to 70 decibels. Not only that, hitting the liquid causes the liquid to splash in the tank, and part of the splashed liquid will be driven by the airflow through the gas outlet into the device that forms the negative pressure source, causing water to enter the device and reduce the service life of the device. In addition, if the traditional gravity drainage method uses an electromagnetic valve to drain water, although the noise can be reduced to a certain extent, due to the problem that the liquid in the tank cannot be emptied within the set time, the amount of liquid sucked in will decrease when the high liquid level is reached again, so it is easy to cause the high liquid level signal to start at a higher frequency.

[0061] Furthermore, in this embodiment, if Figures 1 to 7As shown, the dental chair water-gas separation system also includes a sensing element 20 for detecting whether the height of the liquid in the liquid storage chamber 120 is at a high liquid level where drainage is required; the sensing element 20 can be a liquid level sensor, and the sensing element 20 is communicatively connected with the pressure mechanism, so that when the liquid level in the liquid storage chamber 120 reaches a preset height, the sensing element 20 can send a signal to disconnect the negative pressure source and connect the positive pressure source to prepare for drainage.

[0062] Specifically, the sensing element 20 includes a liquid level probe 22 that can extend into the liquid in the liquid storage cavity 120. The liquid level probe 22 is formed into a long strip structure so that at least part of the liquid level probe 22 can extend below the liquid surface. The liquid level probe 22 is formed with a liquid level sensing portion. When the liquid in the liquid storage cavity 120 increases and the liquid level rises to trigger the liquid level sensing portion, the negative pressure source is disconnected to stop the suction of water vapor. Preferably, the liquid level probe 22 is arranged vertically to improve the accuracy of the liquid level detection of the sensing element 20.

[0063] In a preferred embodiment, Figures 1 to 7 As shown, the liquid level probe 22 is arranged on the side of the positive pressure air port 104, so that the liquid level probe 22 is arranged within the coverage range of the gas blown out by the positive pressure air port 104, and the positive pressure air port 104 connected to the positive pressure source can blow the output gas toward the liquid level probe 22, so that each time the water is drained, the gas output from the positive pressure air port 104 can provide positive pressure to the tank body 10 to facilitate drainage, and when blowing, the residual liquid or foam on the liquid level probe 22 can also be effectively blown away, so as to avoid the situation where the residual liquid or foam causes the liquid level sensing part to be accidentally touched, resulting in the system not being able to work normally, thereby achieving that the gas blown out by the positive pressure air port 104 can clean the liquid level probe 22, thereby improving the stability and reliability of the system.

[0064] The positive pressure gas port 104 is formed as a through hole structure, and the axis extension direction of the positive pressure gas port 104 is preferably the same as the length direction of the liquid level probe 22, so as to improve the effectiveness and reliability of the gas blowing away the residual liquid or foam on the liquid level probe 22. However, in other optional embodiments, the axis extension direction of the positive pressure gas port 104 can also be set at an angle to the length direction of the liquid level probe 22, as long as it can be ensured that the gas blown out by the positive pressure gas port 104 can effectively clean the residual liquid or foam on the liquid level probe 22.

[0065] In a preferred embodiment, a plurality of liquid level probes 22 are arranged at circumferential intervals around the positive pressure gas port 104 to ensure that the gas blown out of the positive pressure gas port 104 can clean all the liquid level probes 22; for example, when there are two liquid level probes 22, the positive pressure gas port 104 is arranged between the two liquid level probes 22. It should be noted that the positive pressure gas port 104 being arranged between the two liquid level probes 22 does not mean that the positive pressure gas port 104 is absolutely located on the line connecting the two liquid level probes 22, but should be understood as: there may be a deviation between the positions of the positive pressure gas port 104 and the two liquid level probes 22, that is, the positive pressure gas port 104 and the two liquid level probes 22 may not be arranged on the same straight line, as long as the distance between the positive pressure gas port 104 and each liquid level probe 22 is less than the distance between the two liquid level probes 22, so that the coverage of the gas blown out of the positive pressure gas port 104 can clean each liquid level probe 22.

[0066] In this embodiment, if Figures 1 to 5 As shown, the tank body 10 is formed into a detachable structure for easy cleaning and maintenance. Specifically, the tank body 10 includes a cover 11 and a tank body 12. The cover 11 is arranged above the tank body 12; the water vapor inlet 101 and the exhaust port 103 are arranged on the cover 11, and the liquid discharge port 102 and the liquid storage cavity 120 are arranged on the tank body 12; the cover 11 and the tank body 12 can be connected by threading or clamping. A sealing ring is preferably provided at the connection between the cover 11 and the tank body 12 to ensure the sealing of the liquid storage cavity 120.

[0067] Furthermore, if Figures 2 to 5 As shown, a accommodating space 110 is formed inside the cover body 11, and a circuit board 30 connected to the sensing element 20 is arranged in the accommodating space 110. The circuit board 30 can be installed on the cover body 11 by fasteners such as screws. The accommodating space 110 is separated from the liquid storage chamber 120 to protect the circuit board 30 and the sensing element 20; a protective shell 113 is arranged on the top of the cover body 11, and the protective shell 113 is detachably connected to the main body of the cover body 11, such as threaded connection or snap-on connection, so that the accommodating space 110 is formed into a closed space to protect the circuit board 30 and the sensing element 20 located in the accommodating space 110.

[0068] Furthermore, the cover body 11 is provided with a channel 111 connecting the accommodating space 110 and the liquid storage chamber 120; the sensing element 20 includes a base 21 connected to a liquid level probe 22, the base 21 is installed in the accommodating space 110, and the liquid level probe 22 extends into the liquid storage chamber 120 via the channel 111. The base 21 can be installed with the cover body 11 by means of a threaded connection, so as to have the advantages of easy installation and reliable fixation.

[0069] In a preferred embodiment, Figure 6 and Figure 7As shown, the positive pressure air port 104 is opened on the base 21, and the positive pressure air port 104 runs from the top of the base 21 to the bottom of the base 21, and the channel 111 is formed into an annular sleeve structure to surround the circumferential side of the liquid level probe 22. The positive pressure air port 104 is located directly above the annular structure of the channel 111, so when the positive pressure air port 104 blows air, the gas can be blown into the inside of the annular sleeve structure, thereby ensuring that the airflow can better blow away the residual liquid or foam attached to the liquid level probe 22.

[0070] In addition, in this embodiment, Figures 2 to 5 As shown, the outer wall of the channel 111 is formed with a protruding guide portion 112, and the guide portion 112 is formed into a funnel-shaped annular structure. The large-diameter end of the guide portion 112 is arranged toward the liquid storage chamber 120, that is, the end of the funnel-shaped annular structure with a larger diameter in the axial direction is arranged downward; the water vapor inlet 101 and the exhaust port 103 are arranged above the guide portion 112, so that the water vapor entering the tank body 10 through the water vapor inlet 101 falls to the guide portion 112, and slides into the liquid storage chamber 120 along the inclined direction of the guide portion 112, which can prevent liquid from splashing into the water vapor inlet 101 and the exhaust port 103, and the funnel-shaped guide portion 112 can also play a role in gathering the positive pressure in the liquid storage chamber 120, so that the positive pressure effectively acts on the liquid to further increase the discharge rate.

[0071] According to the water-gas separation system of the dental chair of the present invention, a liquid storage chamber is formed in the tank body, and a water-gas inlet, a liquid discharge port and an exhaust port connected to the liquid storage chamber are provided on the outer wall, and the negative pressure source is connected to the exhaust port, so that a negative pressure is formed in the liquid storage chamber, so that water vapor is sucked into the liquid storage chamber through the water-gas inlet, and the gas sucked in the liquid storage chamber is directly discharged from the exhaust port, and the liquid in the liquid storage chamber gradually accumulates and increases. When the liquid needs to be discharged from the liquid discharge port, the negative pressure source is disconnected from the positive pressure source and connected to the liquid storage chamber, so that a positive pressure is formed in the liquid storage chamber, so as to provide a driving force for the liquid in the liquid storage chamber to flow to the liquid discharge port, so that the liquid is squeezed to be discharged from the tank body faster. Compared with the traditional method of relying on gravity to discharge liquid, the drainage time is effectively shortened, thereby shortening the time of disconnection of the negative pressure source, making the doctor's operation smoother, improving the doctor's experience, and avoiding the problem of increased fluid accumulation in the patient's mouth due to long drainage time, thereby alleviating the patient's discomfort.

[0072] In addition, the positive pressure air port connected to the positive pressure source in the dental chair water-gas separation system of the present invention can blow the output gas toward the liquid level probe, thereby effectively blowing away the residual liquid or foam on the liquid level probe, avoiding the situation where the system cannot work normally due to the residual liquid or foam accidentally touching the liquid level sensing part, thereby improving the stability and reliability of the system.

[0073] A dental chair provided according to the present invention comprises the above-mentioned dental chair water-gas separation system, and thus has all the beneficial effects of the dental chair water-gas separation system, which will not be described in detail herein.

[0074] According to the present invention, a method for using a dental chair water-gas separation system is provided, which is applied to the dental chair water-gas separation system as described above, and the method for using includes:

[0075] The negative pressure source is connected to the exhaust port to form a negative pressure inside the liquid storage chamber, which provides power for water vapor to enter the tank body through the water vapor inlet; the gas entering the tank body is directly discharged through the exhaust port, and the liquid entering the tank body is accumulated in the liquid storage chamber.

[0076] Specifically, when water vapor extraction is required, the third control valve and the second control valve are opened so that the exhaust port and the water vapor inlet are in a connected state, so that the negative pressure source is connected to the liquid storage chamber, and water vapor enters the tank body through the water vapor inlet. Under the action of the negative pressure source, the gas part of the water vapor is directly discharged from the exhaust port, and the liquid part of the water vapor falls into the liquid storage chamber, thereby realizing water vapor separation.

[0077] When the liquid in the liquid storage chamber needs to be drained, the negative pressure source is disconnected and the positive pressure source is introduced into the liquid storage chamber to provide power for the liquid in the liquid storage chamber to flow to the drain port, so that the liquid is discharged from the drain port under the combined action of gravity and positive pressure to speed up the drainage.

[0078] Specifically, when the height of the liquid in the liquid storage chamber reaches the set height for draining, the second control valve is closed to cut off the access to the negative pressure source so that the liquid storage chamber returns to normal pressure. At this time, the positive pressure source is connected to the liquid storage chamber to increase the positive pressure value in the liquid storage chamber to squeeze the liquid in the liquid storage chamber and accelerate the discharge of the liquid from the drain port. Preferably, when draining, the third control valve is closed to prevent liquid and / or gas from flowing through the water vapor inlet.

[0079] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A dental chair water and gas separation system, characterized in that: include: A tank body, wherein a liquid storage cavity is formed inside the tank body, and an outer wall of the tank body is provided with a water vapor inlet, a liquid discharge port and an air discharge port connected to the liquid storage cavity; A pressure mechanism, used to output a negative pressure source and a positive pressure source, wherein the negative pressure source is connected to the exhaust port so that a negative pressure is formed in the liquid storage chamber; the positive pressure source is connected to the liquid storage chamber so that a positive pressure is formed in the liquid storage chamber to provide a driving force for the liquid in the liquid storage chamber to flow toward the liquid discharge port; The sensing component is used to detect whether the height of the liquid in the liquid storage chamber is at a high liquid level that requires drainage. The sensing component is communicatively connected with the pressure mechanism. The sensing component includes two liquid level probes that can be inserted into the liquid in the liquid storage chamber. The two liquid level probes extend into the liquid storage chamber at different lengths. The liquid level probe is formed with a liquid level sensing portion. When the liquid in the liquid storage chamber increases and the liquid level rises to trigger the liquid level sensing portion, the negative pressure source is disconnected. A positive pressure air port connected to the positive pressure source is provided in the tank body. The liquid level probe is provided on the side of the positive pressure air port. The positive pressure air port is provided between the two liquid level probes, and the liquid level probe is vertically provided. The positive pressure air port is formed as a through hole structure. The axis of the positive pressure air port extends in the same direction as the length direction of the liquid level probe so that the gas blown out by the positive pressure air port can clean the foam remaining on the liquid level probe. The exhaust port and the water vapor inlet are both arranged at the upper part of the tank body, and the liquid discharge port is arranged at the lower part of the tank body; When the negative pressure source is connected, the positive pressure source is disconnected, water vapor enters the liquid storage chamber through the water vapor inlet, and the gas in the liquid storage chamber is discharged through the exhaust port; when the positive pressure source is connected, the negative pressure source is disconnected, and the liquid in the liquid storage chamber flows out of the discharge port faster under the pressure of the positive pressure source.

2. The dental chair water-gas separation system according to claim 1, characterized in that: The tank body comprises a cover body and a tank body; the water vapor inlet and the exhaust port are arranged on the cover body, and the liquid discharge port and the liquid storage cavity are arranged on the tank body; An accommodating space is formed inside the cover body, and a circuit board connected to the sensing element is arranged in the accommodating space; The cover body is provided with a passage connecting the accommodating space and the liquid storage cavity; the sensing element comprises a base connected to the liquid level probe, the base is installed in the accommodating space, and the liquid level probe extends into the liquid storage cavity through the passage.

3. The dental chair water-gas separation system according to claim 2, characterized in that: The positive pressure air port is opened on the base, and the channel is formed as an annular sleeve structure to surround the circumferential side of the liquid level probe.

4. The dental chair water-gas separation system according to claim 1, characterized in that: Also includes: A first control valve, disposed at the liquid discharge port, wherein the first control valve is in an open state when the positive pressure source is connected to the liquid storage chamber; The second control valve is arranged at the exhaust port. When the second control valve is in a closed state, the pressure in the liquid storage chamber is restored to normal pressure.

5. A dental chair, characterized in that: A dental chair water-gas separation system comprising any one of claims 1 to 4.

6. A method for using a dental chair water-gas separation system, characterized in that: The dental chair water-gas separation system according to any one of claims 1 to 4 is implemented, and the method of use comprises: The negative pressure source is connected to the exhaust port so that negative pressure is formed inside the liquid storage chamber to provide power for water vapor to enter the tank body through the water vapor inlet; the gas entering the tank body is directly discharged through the exhaust port, and the liquid entering the tank body is accumulated in the liquid storage chamber; when the liquid in the liquid storage chamber needs to be discharged, the negative pressure source is disconnected and the positive pressure source is passed into the liquid storage chamber to provide power for the liquid in the liquid storage chamber to flow to the discharge port, so that the liquid is discharged from the discharge port under the combined action of gravity and positive pressure to speed up the discharge.

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