Hydraulic Detection Device and Method for Medical Irrigator

Abstract

The present invention relates to the technical field of hydraulic detection, and particularly to a hydraulic detection device and method for a medical oral irrigator. The device includes: an operating handle, with a detection cylinder provided at one end of the operating handle, and the received water flow will flow outwards from the detection cylinder; two rotating members, both placed inside the detection cylinder and distributed along the axial direction of the detection cylinder, and the axis of each rotating member is coaxial with the axis of the detection cylinder; a first through hole is formed at the center of each rotating member, and a guiding groove is provided on the side wall of the first through hole, and an included angle is formed between the guiding groove and the axis of the detection cylinder; a metal member is further provided on the outer side wall of each rotating member; two Hall detection elements are both fixedly provided on the outer side of the detection cylinder and respectively correspond to the outer side walls of the two rotating members; an end cover is installed on the detection cylinder for sealing the detection cylinder; a second through hole is provided at the center of the end cover; a nozzle is provided on the end cover and communicated with the second through hole. The present invention can effectively detect the magnitude of the water flushing pressure of the oral irrigator.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic detection, and particularly relates to a hydraulic detection device and method for a medical oral irrigator. Background Art

[0002] A medical oral irrigator is a high-performance oral irrigation device specially designed for medical environments. As Figure 1 shown, compared with traditional oral irrigators, medical oral irrigators have specially designed pressurization and water pressure detection systems, can perform rinsing for a longer time, have stronger cleaning ability and stricter hygiene standards, and are suitable for dental clinics, oral departments of hospitals or professional dentists to operate.

[0003] Due to different conditions of patients' teeth, the tolerable rinsing water pressure varies. Therefore, it is necessary to control the size of the water pressure during rinsing to keep it within a suitable range. During use, the ejected water pressure will change under the influence of various factors. For example, raising the handle will reduce the water pressure. At this time, the water pressure detection system will be used to obtain the size of the water pressure and timely adjust the pressure of the water pump.

[0004] In existing medical oral irrigators, the water pressure detection system usually needs to be installed on the main body due to its structural limitations, which will result in the water pressure detection point being too far from the nozzle, causing an error between the detected value and the actual ejected water pressure value, and unable to accurately control the size of the water pressure. Summary of the Invention

[0005] The present invention provides a hydraulic detection device and method for a medical oral irrigator, which can effectively solve the problems in the background art.

[0006] The present invention provides a hydraulic detection device for a medical oral irrigator, comprising:

[0007] An operation handle for receiving water flow and for a person to hold and operate; a detection cylinder is provided at one end of the operation handle, and the received water flow will flow out from the detection cylinder.

[0008] Two rotating parts are both placed in the detection cylinder and distributed along the axial direction of the detection cylinder, and the axis of each rotating part is coaxial with the axis of the detection cylinder; a first through hole is opened in the center of each rotating part, and a guiding groove is provided on the side wall of the first through hole, and an included angle is formed between the guiding groove and the axis of the detection cylinder; a metal part is further provided on the outer side wall of each rotating part.

[0009] Two Hall detection elements are both fixedly provided on the outer side of the detection cylinder and respectively correspond to the outer side walls of the two rotating parts.

[0010] An end cover is installed on the detection cylinder for sealing the detection cylinder; a second through hole is provided in the center of the end cover.

[0011] The nozzle is arranged on the end cover and communicates with the second through hole.

[0012] Further, the outer side wall of each rotating member is in clearance fit with the inner wall of the detection cylinder; a plurality of metal members are arranged on each rotating member and are evenly distributed along the circumferential direction of the rotating member; all the metal members are spherical structures and abut against the detection cylinder.

[0013] Further, a plurality of ball bearings are arranged on the end face of each rotating member facing the nozzle, and the plurality of ball bearings are evenly distributed along the circumferential direction of the rotating member.

[0014] Further, a sealing gasket is further included, which is arranged between the detection cylinder and the end cover, and the ball bearings of the rotating member close to the nozzle roll on the sealing gasket.

[0015] Further, two Hall detection elements are respectively arranged on both sides of the detection cylinder.

[0016] Further, mounting grooves are arranged on both sides of the detection cylinder, and the Hall detection elements are mounted in the mounting grooves.

[0017] Further, threads are arranged on the outer side of the detection cylinder, and the end cover is screwed onto the detection cylinder through the threads.

[0018] The present invention further provides a hydraulic detection method for a medical oral irrigator, which uses the hydraulic detection device for a medical oral irrigator as described above. The steps include:

[0019] During tooth flushing, the water flow is pressurized and then sent into the operation handle, and then enters the detection cylinder. After that, the water flow passes through the first through holes of the two rotating members, and then enters the nozzle through the second through hole and is ejected;

[0020] When the water flow passes through the first through hole of the rotating member, under the influence of the guiding groove, the water flow will drive the rotating member to rotate. The two Hall detection elements continuously record the detected current values, and calculate the outlet water pressure magnitude P through a conversion model. If the difference between the outlet water pressure magnitude P and the set water flow pressure entering the operation handle exceeds the set range, the water flow pressurization value is adjusted.

[0021] Further, the specific calculation method of the conversion model is:

[0022] Set a reset time period T0, and recalculate the outlet water pressure magnitude P every T0 time period;

[0023] In each calculation, record the detection value of the Hall detection element far from the nozzle as Ia, and record the detection value of the Hall detection element close to the nozzle as Ib;

[0024] Starting from time T = 0, continuously plot the function image of Ia with respect to time T and the function image of Ib with respect to time T, and calculate the average periods of the two function images as Ta and Tb respectively;

[0025] Calculate the outlet water pressure P = A·Ta 3 / 2 +B·[(Ta - Tb) / Tb] 1 / 2 ;

[0026] Wherein, both A and B are conversion coefficients and are constants.

[0027] Further, if the difference between the outlet water pressure P and the set water flow pressure entering the operating handle exceeds the set range, calculate the gap score C = (P - P0) / P0, and adjust the water flow pressurization value according to the value of C.

[0028] Through the technical solution of the present invention, the following technical effects can be achieved:

[0029] Compared with the traditional detection device, the detection structure of this testing device is significantly simplified, the overall volume of the device is smaller, and it can better meet the detection and use requirements on the operating handle. At the same time, the number of components in this detection device is small and the installation complexity is low, which can better save the costs of processing and maintenance. Moreover, the boundary between the inside and outside of this detection device is clear, and no additional water flow branch for detection needs to be set, which can effectively ensure the overall sealing performance of the dental irrigator. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of a medical dental irrigator in the background art;

[0032] Figure 2 It is a cross-sectional view of the hydraulic detection device for a medical dental irrigator in the present invention;

[0033] Figure 3 In the present invention Figure 2 An enlarged view of part A;

[0034] Figure 4 It is an exploded view of the components of the hydraulic detection device for a medical dental irrigator in the present invention;

[0035] Figure 5 It is a schematic structural diagram of the rotating part in the present invention;

[0036] Reference numerals: 1, operating handle; 11, detection cylinder; 12, mounting groove; 2, rotating member; 21, first through hole; 22, guide groove; 23, metal member; 24, ball; 3, Hall detection element; 4, end cap; 5, nozzle; 6, gasket. Detailed implementation manners

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] The present invention relates to a hydraulic detection device for a medical oral irrigator. The detection device is mainly arranged at one end of the operating handle 1 close to the nozzle 5, as Figures 2 to 5 shown. Specifically, it further includes two rotating members 2, two Hall detection elements 3, and an end cap 4. The specific structures and installation forms of each component are as follows:

[0041] The operating handle 1 is used to receive the water flow flowing after being pressurized by a water pump for personnel to hold and operate. There will be a switch button and a switch system on the operating handle 1. When the button is turned on, the water flow will enter the operating handle 1. These structures are common prior arts of the operating handle 1 and will not be elaborated here. In addition to the above structures, a detection cylinder 11 is also arranged at one end of the operating handle 1 close to the nozzle. The detection cylinder 11 is communicated with the pipeline inside the operating handle 1, so that the water flow received by the operating handle 1 will flow out from the detection cylinder 11.

[0042] Two rotating members 2 are both placed inside the detection cylinder 11 and are distributed along the axial direction of the detection cylinder 11, and the axis of each rotating member 2 is coaxial with the axis of the detection cylinder 11. Each rotating member 2 is only placed inside the detection cylinder 11 and is not connected to the detection cylinder 11, so that each rotating member 2 can freely rotate and move inside the detection cylinder 11. A first through hole 21 is opened at the center of each rotating member 2, and a guiding groove 22 is provided on the side wall of the first through hole 21. As Figure 5 shown, an included angle is formed between the guiding groove 22 and the axis of the detection cylinder 11; a metal member 23 is further provided on the outer side wall of each rotating member 2, so that the metal member 23 can move circumferentially along the inner wall of the detection cylinder 11 following the rotation of the rotating member 2. The structures and installation orientations of the two rotating members 2 are the same, so there is no need to deliberately distinguish the front-back relationship during installation.

[0043] Two Hall detection elements 3 are both fixedly arranged outside the detection cylinder 11 and respectively correspond to the outer side walls of the two rotating members 2, and are used to detect the position of the metal member 23, thereby reflecting the rotation state of the rotating member 2. The Hall detection element is a detection element that can detect the position of a metal. When the distance between the metal and the Hall detection element changes, it will cause a corresponding change in the magnitude of the current emitted by the Hall detection element. Its principle and structure are prior art and will not be elaborated here.

[0044] The end cover 4 is installed on the detection cylinder 11 and is used to block the opening of the detection cylinder 11; a second through hole for water flow is provided at the center of the end cover 4.

[0045] The nozzle 5 is arranged on the end cover 4 and is communicated with the second through hole.

[0046] The specific working process and principle of this detection device are as follows: When flushing teeth, the user presses the switch button of the operating handle 1. At this time, the water pump in the dental irrigator main body will start to work to pressurize the water and send it into the operating handle 1, then the water will enter the detection cylinder 11, pass through the first through holes 21 of the two rotating members 2, and then enter the nozzle 5 through the second through hole and be sprayed out. When the water flow passes through the first through hole 21 of the rotating member 2, since the guiding groove 22 is obliquely arranged on the inner wall of the first through hole 21, the water flow impacts the side wall of the guiding groove 22, which will push the rotating member 2 to rotate. Moreover, the greater the water pressure, the faster the water flow rate, and the stronger the impact on the guiding groove 22, which can drive the rotating member 2 to rotate faster. In this way, this device converts the water pressure into the rotation of the rotating member 2. Therefore, only by detecting the rotation state of the rotating member 2 can the magnitude of the water pressure be obtained. For this reason, this device adopts the cooperation mode of the metal member 23 and the Hall detection element 3. As the rotating member 2 rotates, the metal member 23 will continuously approach and move away from the Hall detection element 3, and the detection data obtained by the Hall detection element 3 will be a function with periodic characteristics. Only by analyzing the data can the rotation state of the rotating member 2 be obtained.

[0047] When the water pressure exceeds a certain limit, the rotation speed of the rotating member 2 will gradually tend to a fixed value. Therefore, the water pressure range that can be detected by a single rotating member 2 is limited. To expand the detection range, the present device adopts a method of mutual cooperation of two rotating members 2: If the two rotating members 2 are sequentially recorded as the front rotating member and the rear rotating member according to the water flow direction, then when the water pressure is high, the front rotating member will be subjected to the greatest impact of the water flow, and the water flow will press the front rotating member against the rear rotating member to make the rear rotating member abut against the end cover 4. At this time, the front rotating member will rotate relatively quickly under the impact of the water flow, and the rear rotating member will have a significant difference in rotation speed from the front rotating member because there is friction at both ends and most of the impact force of the water flow passing through it has been absorbed by the front rotating member; when the water pressure is low, the impact forces on the guiding grooves 22 in the two rotating members 2 will be similar, and the pushing effect of the water flow on the front rotating member is not obvious. Therefore, the rotation speeds of the two rotating members 2 will be closer. In this way, the present test device can have an additional data dimension to judge the size of the water pressure, improving the detection ability and accuracy.

[0048] Traditional water pressure detection devices usually need to set up a probe or introduce water into the interior of their detection elements to achieve detection. Compared with traditional detection devices, the present test device significantly simplifies the detection structure, making the overall volume of the device smaller and better adapting to the detection use requirements on the operating handle 1. At the same time, the number of components in the present detection device is small and the installation complexity is low, which can better save the processing and maintenance costs. Moreover, the boundary between the inside and outside of the present detection device is clear, and there is no need to set up an additional water flow branch for detection, which can effectively ensure the overall sealing performance of the oral irrigator.

[0049] On the premise of ensuring the free rotation and movement of the rotating member 2, in order to prevent the rotating member 2 from skewing and causing its axis to be non-coaxial with the axis of the detection cylinder 11, the present detection device also optimizes the rotating member 2 as follows: The outer side wall of each rotating member 2 has a clearance fit with the inner wall of the detection cylinder 11 to prevent the rotating member 2 from rubbing against the detection cylinder 11 and affecting the rotation of the rotating member 2; A plurality of metal parts 23 are provided on each rotating member 2 and are evenly distributed along the circumferential direction of the rotating member 2. All the metal parts 23 are spherical structures and abut against the detection cylinder 11, forming an effective circumferential support for the rotating member 2, thereby effectively preventing the rotating member 2 from skewing.

[0050] The rotating member 2 can achieve a good separation effect by using a self-lubricating material such as POM plastic, enabling the two rotating members 2 to rotate independently. If a better separation effect is desired, the following optimization can also be carried out: A plurality of balls 24 are provided on the end face of each rotating member 2 facing the nozzle 5, and the plurality of balls 24 are evenly distributed along the circumferential direction of the rotating member 2. After installation, the balls 24 of one rotating member 2 will abut against the end face of the other rotating member 2, and the balls 24 of the other rotating member 2 will abut against the end cover 4.

[0051] Preferably, the detection device further includes a gasket 6. The gasket 6 is arranged between the detection cylinder 11 and the end cover 4, and the ball 24 of the rotating member 2 close to the nozzle 5 rolls on the gasket 6. The gasket 6 can not only achieve the sealing at the abutting part of the detection cylinder 11 and the end cover 4, but also when the water pressure is high and the front rotating member presses against the rear rotating member, the greater the pressure, the deeper the ball 24 sinks into the gasket 6, resulting in an increase in friction, thereby being able to more effectively inhibit the rotation of the rear rotating member and making the rotational speed difference between the two rotating members 2 more obvious, facilitating subsequent detection and judgment. An extension section extending towards the detection cylinder 11 can also be arranged on the outer edge of the gasket 6. After the gasket 6 is installed, the extension section wraps the outer side surface of the detection cylinder 11, thus facilitating the installation and positioning of the gasket 6.

[0052] The ball 24 can be of a plastic structure or a metal structure. When the ball 24 is of a metal structure, it is preferred that the number of balls 24 on each rotating member 2 is equal to the number of metal parts 23, and each ball 24 is radially aligned with a corresponding metal part 23 on the rotating member 2. In this way, when the metal part 23 approaches the Hall detection element 3, the ball 24 will also approach the Hall detection element 3 together, thereby being able to enhance the influence on the Hall detection element 3 and making the detection data of the Hall detection element 3 change more significantly.

[0053] Preferably, the two Hall detection elements 3 are respectively arranged on both sides of the detection cylinder 11, so that the two Hall detection elements 3 will not interfere with each other during detection, improving the accuracy of the detection data.

[0054] To ensure the accurate installation position of the Hall detection element 3, installation grooves 12 are preferably arranged on both sides of the detection cylinder 11, and the Hall detection element 3 is installed in the installation grooves 12. When necessary, a wire groove extending along the axial direction of the detection cylinder 11 can be first opened for placing the subsequent data line, and then the installation groove 12 is processed in the wire groove to place the Hall detection element 3.

[0055] To facilitate the installation of the end cover 4, threads are preferably arranged on the outer side of the detection cylinder 11, and the end cover 4 is screwed onto the detection cylinder 11 through the threads.

[0056] The present invention also relates to a hydraulic detection method for a medical oral irrigator, using the above-mentioned hydraulic detection device for a medical oral irrigator. The steps include:

[0057] During tooth flushing, the water flow is pressurized and then sent into the operation handle 1, and then enters the detection cylinder 11. After that, the water flow passes through the first through holes 21 of the two rotating members 2, and then enters the nozzle 5 through the second through holes and is ejected.

[0058] When water flows through the first through-hole 21 of the rotating member 2, the water flow will drive the rotating member 2 to rotate under the influence of the guiding groove 22. The two Hall detection elements 3 continuously record the detected current values, and calculate the outlet water pressure magnitude P through a conversion model. If the difference between the outlet water pressure magnitude P and the set water flow pressure entering the operating handle 1 exceeds the set range, the water pressure increase value is adjusted.

[0059] Preferably, the specific calculation method of the conversion model is as follows:

[0060] Set a reset duration T0, and recalculate the outlet water pressure magnitude P every T0 duration;

[0061] In each calculation, record the detection value of the Hall detection element far from the nozzle 5 as Ia, and record the detection value of the Hall detection element close to the nozzle 5 as Ib;

[0062] Each calculation starts from time T = 0, and continuously plots the function image of Ia versus time T and the function image of Ib versus time T. Since the rotating member 2 drives the metal member 23 to continuously approach and move away from the Hall detection element 3, the Ia and Ib presented will be an image similar to the sine function image in shape and having the characteristics of a periodic function. At this time, multiple period values of Ia and Ib can be calculated, and their average values are taken as the effective values during this period. The average periods of the two function images are Ta and Tb respectively, with the unit of ms. This period is the time taken for two adjacent metal members 23 on the rotating member 2 to reach the Hall detection element 3 respectively, so that the rotation speed of the rotating member 2 can be reflected;

[0063] Calculate the outlet water pressure magnitude P = A·Ta 3 / 2 +B·[(Ta - Tb) / Tb] 1 / 2 ;

[0064] Among them, both A and B are conversion coefficients and are constants. This formula takes the rotation speed of a rotating member 2 (i.e., Ta) and the rotation difference between two rotating members 2 (i.e., (Ta - Tb) / Tb) as variables, so as to form a fitting equation, comprehensively evaluate the rotation conditions of the two rotating members 2, and thus realize the conversion calculation of the outlet water pressure magnitude P.

[0065] The specific calculation formula of the outlet water pressure magnitude P can be realized by detecting special parameters through experiments and then fitting the parameters to obtain a fitting function. The specific process is as follows:

[0066] First, remove the operating handle 1 and the nozzle 5. Then, connect a hydraulic sensor to the end of the operating handle 1 where the nozzle is installed, and connect the water outlet pipe and the water return pipe of the circulating water flow system to the front and rear ends of the operating handle 1 respectively. The circulating water flow system can input water into the operating handle 1 through the water outlet pipe, and the water will flow out of the operating handle 1 and then enter the water return pipe and return to the circulating water flow system;

[0067] Adjust the water pump pressure value in the circulating water flow system multiple times. Each time an adjustment is made, record the reading Px of the hydraulic sensor. Then, starting from time T = 0, continuously plot the function graph of Ia with respect to time T and the function graph of Ib with respect to time T, and calculate the average periods of the two function graphs as Ta and Tb respectively. After multiple adjustments, multiple sets of values of Px, Ta, and Tb can be obtained. At this time, Px can be used as the dependent variable, and Ta and (Ta - Tb) / Tb can be used as the independent variables to fit the function Px = f(Ta, (Ta - Tb) / Tb) (the fitting result exemplified in this device is A·Ta 3 / 2 +B·[(Ta - Tb) / Tb] 1 / 2 ), and this formula can be regarded as an equivalent calculation formula for the outlet water pressure magnitude P.

[0068] In addition to calculating the outlet water pressure magnitude P by the above method of fitting functions, a control library can also be established to obtain its value. Specifically: store all the values of Px and the corresponding values of Ta and (Ta - Tb) / Tb in the control library. During subsequent work processes, the corresponding outlet water pressure magnitude P value can be found by querying the control library.

[0069] If the difference between the outlet water pressure magnitude P and the set water pressure entering the operating handle (i.e., the water supply pressure set by the main pump) exceeds the set range, then calculate the gap score C = (P - P0) / P0. C can reflect the deviation amount between the outlet water pressure magnitude P and the set water pressure, and can provide a reference quantity for adjusting the water flow pressure value, avoiding excessive adjustment resulting in a greater deviation in water pressure. Adjust the water flow pressure value according to the value of C.

[0070] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic detection device for a medical oral irrigator, characterized in that, Comprising: An operation handle (1) for receiving water flow and being held and operated by a person; One end of the operation handle (1) is provided with a detection cylinder (11), and the received water flow will flow outwards from the detection cylinder (11); Two rotating members (2) are both placed in the detection cylinder (11), and are axially distributed along the detection cylinder (11), and the axis of each rotating member (2) is coaxial with the axis of the detection cylinder (11); A first through hole (21) is opened at the center of each rotating member (2), and a guide groove (22) is provided on the side wall of the first through hole (21), and an included angle is formed between the guide groove (22) and the axis of the detection cylinder (11); A metal member (23) is further provided on the outer side wall of each rotating member (2); The outer side wall of each rotating member (2) is in clearance fit with the inner wall of the detection cylinder (11); A plurality of the metal members (23) are provided on each rotating member (2), and are evenly distributed along the circumferential direction of the rotating member (2); All the metal members (23) are spherical structures and abut against the detection cylinder (11); Two Hall detection elements (3) are both fixedly arranged on the outer side of the detection cylinder (11), and respectively correspond to the outer side walls of the two rotating members (2); An end cover (4) is installed on the detection cylinder (11) for sealing the detection cylinder (11); A second through hole is provided at the center of the end cover (4); A nozzle (5) is provided on the end cover (4) and is communicated with the second through hole; A plurality of balls (24) are provided on the end surface of each rotating member (2) facing the nozzle (5), and the plurality of balls (24) are evenly distributed along the circumferential direction of the rotating member (2).

2. The hydraulic detection device for a medical oral irrigator according to claim 1, wherein It further includes a gasket (6) provided between the detection cylinder (11) and the end cover (4), and the balls (24) of the rotating member (2) close to the nozzle (5) roll on the gasket (6).

3. The hydraulic detection device for a medical oral irrigator according to claim 1, wherein The two Hall detection elements (3) are respectively arranged on both sides of the detection cylinder (11).

4. The hydraulic detection device for a medical oral irrigator according to claim 3, wherein, Mounting grooves (12) are provided on both sides of the detection cylinder (11), and the Hall detection elements (3) are installed in the mounting grooves (12).

5. The hydraulic detection device for a medical oral irrigator according to claim 1, characterized in that, Threads are provided on the outer side of the detection cylinder (11), and the end cover (4) is screwed onto the detection cylinder (11) through the threads.

6. A hydraulic detection method for a medical oral irrigator, characterized in that, When using the hydraulic detection device for a medical oral irrigator according to any one of claims 1 to 5, the steps include: During dental flushing, the water flow is pressurized and then sent into the operation handle (1), and then enters the detection cylinder (11), and then the water flow passes through the first through holes (21) of the two rotating members (2), and then enters the nozzle (5) through the second through hole and is ejected; When the water flow passes through the first through holes (21) of the rotating members (2), under the influence of the guide grooves (22), the water flow will drive the rotating members (2) to rotate. The two Hall detection elements (3) continuously record the detected current values, and calculate the outlet water pressure magnitude P through a conversion model. If the difference between the outlet water pressure magnitude P and the set water flow pressure entering the operation handle (1) exceeds the set range, the water flow pressurization value is adjusted.

7. The hydraulic detection device for a medical oral irrigator according to claim 6, wherein The specific calculation method of the conversion model is as follows: Set the reset duration T0, and recalculate the outlet water pressure P every T0 duration; In each calculation, record the detection value of the Hall detection element (3) far from the nozzle (5) as Ia, and record the detection value of the Hall detection element (3) close to the nozzle (5) as Ib; Starting from time T = 0, continuously plot the function image of Ia with respect to time T and the function image of Ib with respect to time T, and calculate the average periods of the two function images as Ta and Tb respectively; Calculate the outlet water pressure magnitude \(P = A\cdot T_a\) 3 / 2 + B\cdot[(T_a - T_b) / T_b] 1 / 2 ; Among them, both A and B are conversion coefficients and are constants.

8. The hydraulic detection device for a medical oral irrigator according to claim 7, characterized in that, If the difference between the outlet water pressure P and the set water flow pressure entering the operating handle exceeds the set range, calculate the gap score C = (P - P0) / P0, and adjust the water flow pressurization value according to the value of C.

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