Cooling water supply system for dental equipment

Abstract

The utility model discloses a cooling water supply system for dental equipment, which comprises a plug cock, the plug cock comprises a plug cock body, the plug cock body is provided with a central cavity with an open upper part, and the central cavity is radially provided with a main pipe orifice, a first branch pipe orifice and a second branch pipe orifice from a central shaft; the plug valve element is inserted into the center cavity in a sealed mode and can rotate around a center shaft, the plug valve element comprises a valve rod and a fan-shaped valve clack arranged on the valve rod, and a channel opening of the plug valve element is formed by a circulation part between the valve rod and the cavity wall of the center cavity. According to the utility model, quick switching and accurate control of cooling water supply of the double-handle dental equipment are realized, the one-way flow characteristic of a cooling water system can be effectively maintained in a dental operation, water supply separation among different handles is guaranteed, and the problem of water flow cross contamination caused by pipeline sharing of a double-handle water supply system is solved.

Description

Technical Field

[0001] This utility model relates to the field of dental equipment technology, and in particular to a cooling water supply system for dental equipment. Background Technology

[0002] With the development of the industry, more and more dual-handle surgical devices are being used in dentistry. During the procedure, both handpieces need to be supplied with sterile saline for cooling, and simultaneously serve to disinfect and clean blood stains from the surgical site. Using two handpieces simultaneously can lead to backflow or cross-contamination of water between them. Especially in oral treatments, the water source must be highly clean to prevent the spread of pathogens such as bacteria and viruses between patients. For example, in teeth cleaning or implant surgery, when one handpiece is used to rinse the affected area, the simultaneous use of the other handpiece may cause the rinsing solution or other contaminants in the oral cavity to flow back into the water supply system, causing water source or waterway contamination. Existing solutions on the market are as follows:

[0003] One type has two handles with two independent water supply pipes. When switching between the two handles, the operator needs to manually disconnect the water pipe of one handle and connect the water pipe of the other handle. In surgical scenarios where handles are frequently changed, frequent switching of water pipe connections not only increases the operator's burden, but also easily leads to misoperation and damages the sterile environment.

[0004] Another method uses a tee structure to share a main pipe for two water pipes, with the opening and closing of each branch pipe controlled by a pipe clamp. When using one branch pipe, the clamp on that branch pipe is opened, while the clamp on the other branch pipe is closed. This method is complicated and lacks clear indication, especially when the handle pipe is long, making it difficult for operators to accurately identify and control the corresponding branch pipe. Utility Model Content

[0005] The purpose of this invention is to provide a cooling water supply system for dental equipment to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: First, this utility model provides a cooling water supply system for dental equipment, including a stopcock, wherein the stopcock includes:

[0007] The plug valve body has an open central cavity at the top. The central cavity is radially provided with a main pipe port, a first branch pipe port, and a second branch pipe port from the central axis. The main pipe port, the first branch pipe port, and the second branch pipe port are respectively provided with a main pipe body, a first branch pipe body, and a second branch pipe body.

[0008] A plug valve core is sealed and inserted into the central cavity and can rotate around the central axis. The plug valve core includes a valve stem and a sector-shaped valve disc disposed on the valve stem. The sector-shaped valve disc has an arc-shaped wall transition at the junction with the valve stem. The outer side of the sector-shaped valve disc is in contact with the cavity wall of the central cavity. The flow portion between the valve stem and the cavity wall of the central cavity constitutes the channel port of the plug valve core.

[0009] The first branch port, the second branch port, and the adjacent branches enclose a first sector area to the central axis. The first sector area has a central angle α. The central angle β of the sector valve is greater than the central angle α. The first branch port and the second branch port are symmetrically distributed on both sides of the main port. The main port, the first branch port, and the adjacent branches enclose a second sector area to the central axis. The second sector area has a central angle γ. The central angle θ of the channel port is greater than the central angle γ.

[0010] With the above structure, the stopcock valve core is sealed and inserted into the stopcock valve body to control the flow between the main pipe port and the first and second branch pipe ports. The channel port establishes a one-way flow mechanism for the stopcock, eliminating the risk of cross-contamination between the first and second branch pipe bodies. The junction of the sector valve disc and the valve stem has a rounded wall transition. When water flows into the channel port from the main pipe body, it flows along the rounded wall, making the water flow smoother, improving the water flow conduction efficiency, and effectively reducing the impact of water flow on the valve core upon entering the stopcock, thus reducing vibration of the entire stopcock.

[0011] This technical solution can effectively maintain the unidirectional flow characteristics of the cooling water system in dental surgery, ensure water supply separation between different handles, and solve the problem of cross-contamination of water flow caused by shared pipes in dual-handle water supply systems.

[0012] In the above technical solution, since the central angle β of the sector valve is greater than the central angle α, the sector valve can completely block the first branch pipe opening and the second branch pipe opening, realizing the disconnection of the main body from the first branch pipe and the second branch pipe by the stopcock; at the same time, since the central angle θ of the channel opening is greater than the central angle γ, the first branch pipe or the second branch pipe is independently unidirectionally flowing when connected to the main body, and when the stopcock valve core is rotated, the sector valve can completely isolate the connection between the first branch pipe and the second branch pipe, avoiding cross-contamination of the water in the first branch pipe or the second branch pipe.

[0013] As an extension of the above solution, it also includes a water supply pump body, a water supply pipe, a water supply branch pipe and a handle. The output end of the water supply pump body is connected to the end of the main body through the water supply pipe. An indicator rod extends horizontally from the top of the stopcock valve core. The stopcock valve body is provided with two open positions and one open position.

[0014] When the indicator rod is aligned with one of the control positions, the main body connects to the first branch pipe or the second branch pipe through the channel opening, and the end of the first branch pipe or the second branch pipe is connected to a water supply branch pipe and a handle in sequence.

[0015] Through the above technical solution, the alignment indication of the indicator rod and the conduction position provides a clear path selection mark, reduces the complexity of operation and improves the accuracy of switching, and avoids erroneous actions during frequent switching.

[0016] As an extension of the above solution, when the indicator rod is aligned with the disconnect position, the sector-shaped valve disc of the stopcock valve core blocks the first branch pipe opening and the second branch pipe opening. In this extended solution, the sector-shaped valve disc blocks the first and second branch pipe openings when the indicator rod is aligned with the disconnect position, which can effectively prevent cross-contamination between the water in the first branch pipe and the water in the second branch pipe.

[0017] As an extension of the above solution, it also includes flow valves respectively installed on the first branch pipe and the second branch pipe. The flow valve includes a flow valve body and a valve plug column installed on the flow valve body. The two sides of the lower part of the valve plug column form a flow channel. The flow channel controls the flow area of ​​water in the first branch pipe or the second branch pipe when the valve plug column rotates.

[0018] This extended solution employs independently configured dual flow control valves, allowing for separate adjustment of the flow rates of the two water streams to meet the cooling water requirements of different handles. Operators can adjust the flow rate with a single rotary motion, avoiding the cumbersome process of repeatedly confirming the clamping position required with traditional pipe clamps. Simultaneously, the rigid structure of the flow control valves prevents the accumulation of flow errors caused by hose deformation, maintaining flow stability over extended use and effectively reducing the risk of cross-contamination due to improper adjustment.

[0019] As an extension of the above solution, the inner wall of the flow valve body is provided with at least two recesses at the same height. The valve plug body has a protrusion corresponding to the height of each recess. When the protrusion aligns with one of the recesses, it forms a stop. The number of stops is determined by the number of recesses, and different stops result in different flow areas in the branch pipe. Through the mechanical positioning mechanism of the recesses and protrusions, each stop has a clear physical limiting characteristic. In dental surgery, doctors can determine the stop status by touch without visual assistance when operating with one hand. When different flow rates need to be switched, the mechanical feedback generated by the protrusion embedding into the recess effectively prevents sudden changes in water flow caused by accidental touches, avoiding abnormal flushing pressure due to flow control errors.

[0020] As an extension of the above solution, the top of the valve plug is provided with an adjusting rod, and the flow valve body is provided with a gear position mark. When the adjusting rod is rotated to a certain gear position mark, the protrusion is aligned with one of the concave positions.

[0021] This extended solution enables precise control of the flow valve's position adjustment. Operators can quickly complete the setting by observing the position markings, eliminating the need for repeated flow rate tests. The mechanical fit between the convex and concave parts provides clear tactile feedback, preventing valve position misalignment due to accidental contact after adjustment and ensuring stable water flow control.

[0022] As an extension of the above solution, the end of the main pipe adopts a straight-insertion connector, and one end of the water supply pipe is inserted into and fixed to the straight-insertion connector. The straight-insertion connector completes sealing and fixing simultaneously through axial insertion, simplifying the operation steps, realizing rapid assembly of the water supply pipeline without disrupting the aseptic operating environment. In dental surgery scenarios, it can effectively prevent secondary contamination caused by hand contact with the connection parts during operation, while eliminating the cooling water leakage caused by operational errors in traditional connection methods, ensuring the sealing reliability of the cooling water supply system during treatment.

[0023] As an extension of the above solution, the water supply pipe is equipped with a pipe clamp. The pipe clamp is used to control the on / off state or flow rate of the water supply pipe, and its quick on / off function allows the replacement or maintenance of the stopcock to be carried out without interrupting other water circuits or stopping the water supply pump, thus ensuring the reliability and operational efficiency of the water supply system.

[0024] As an extension of the above solution, the ends of the first and second branch pipes have threaded sections, and the water supply branch pipe is connected to the threaded sections via Luer lock joints. Through the synergistic effect of the threaded sections and Luer lock joints, both the tensile strength of the threaded connection and the ease of operation of the plug-in connector are preserved.

[0025] As an extension of the above solution, the first and second branch pipes are equipped with check valves between their threaded sections and the flow valve. By installing check valves at specific locations on the branch pipes, the fluid channel has an automatic locking function, achieving reverse flow blocking without manual intervention while maintaining the forward water supply function unaffected. In dental cleaning or implant surgery scenarios, when a handle is no longer in use, its corresponding branch pipe is immediately closed by the check valve, eliminating the physical channel for pathogens to spread through the water supply system and ensuring the sterility of the cooling water during treatment. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0027] Figure 1 This is a schematic diagram of the water supply system in the embodiment;

[0028] Figure 2 This is a schematic diagram of the structure of the stopcock in the embodiment;

[0029] Figure 3 This is a schematic diagram of the exploded structure of the stopcock in the embodiment;

[0030] Figure 4 This is a cross-sectional structural diagram of the plug valve core and plug valve body in an embodiment;

[0031] Figure 5 This is a cross-sectional exploded view of the plug valve core and plug valve body in an embodiment.

[0032] In the attached diagram: 100: stopcock valve body, 200: water supply pump body, 300: water supply pipe, 400: water supply branch pipe, 500: handle;

[0033] 110: Plug valve body; 111: Central cavity; 112: Main pipe port; 113: First branch pipe port; 114: Second branch pipe port; 120: Main pipe body; 130: First branch pipe body; 140: Second branch pipe body; 150: Plug valve core; 151: Valve stem; 152: Sector valve disc; 153: Arc wall; 154: Channel port; 160: Overflow valve; 161: Overflow valve body; 162: Valve plug body; 163: Adjusting rod body; 170: Threaded section; 180: Check valve. Detailed Implementation

[0034] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] Reference Figures 1 to 5 The following are several embodiments of a dental equipment cooling water supply system according to the present invention.

[0039] like Figure 1-5 As shown, in some embodiments, a dental device cooling water supply system includes a stopcock 100, the stopcock 100 comprising:

[0040] The stopcock valve body 110 has an open central cavity 111. The central cavity 111 is radially provided with a main pipe port 112, a first branch pipe port 113, and a second branch pipe port 114. The main pipe port 112, the first branch pipe port 113, and the second branch pipe port 114 are respectively provided with a main pipe body 120, a first branch pipe body 130, and a second branch pipe body 140. That is, the main pipe port 112, the first branch pipe port 113, and the second branch pipe port 114 form a cross channel in the central cavity 111. For example, the main pipe body and the branch pipe body are formed into an integrated structure by using a precision casting process to ensure that there is no leakage at the water flow intersection.

[0041] The plug valve core 150 is sealed and inserted into the central cavity 111 and can rotate around the central axis. The plug valve core 150 can be inserted in a conical sealing structure, for example, a rubber sealing ring is set at the bottom of the valve core and fits against the conical surface inside the valve body to achieve dynamic sealing during rotation.

[0042] The plug valve core 150 includes a valve stem 151 and a sector-shaped valve disc 152 disposed on the valve stem 151. The sector-shaped valve disc 152 is provided with an arc wall 153 at the junction with the valve stem 151. The outer side of the sector-shaped valve disc 152 is in contact with the cavity wall of the central cavity 111. The flow portion between the valve stem 151 and the cavity wall of the central cavity 111 constitutes the channel port 154 of the plug valve core 150.

[0043] like Figure 5 As shown, the first branch port 113 and the second branch port 114, along with their adjacent portions, enclose a first sector area to the central axis. The first sector area has a central angle α. The central angle β of the sector valve 152 is greater than the central angle α. The first branch port 113 and the second branch port 114 are symmetrically distributed on both sides of the main port 112. The main port 112, the first branch port 113, and their adjacent portions enclose a second sector area to the central axis. The second sector area has a central angle γ. The central angle θ of the channel port 154 is greater than the central angle γ.

[0044] With the above structure, the stopcock valve core is sealed and inserted into the stopcock valve body to control the flow between the main pipe port and the first and second branch pipe ports. The channel port establishes a one-way flow mechanism for the stopcock, eliminating the risk of cross-contamination between the first and second branch pipe bodies. The junction of the sector valve disc and the valve stem has a rounded wall transition. When water flows into the channel port from the main pipe body, it flows along the rounded wall, making the water flow smoother, improving the water flow conduction efficiency, and effectively reducing the impact of water flow on the valve core upon entering the stopcock, thus reducing vibration of the entire stopcock.

[0045] In this embodiment, since the central angle β of the sector valve is greater than the central angle α, the sector valve can completely block the first branch pipe opening and the second branch pipe opening, realizing the disconnection of the main body from the first branch pipe and the second branch pipe by the stopcock; at the same time, since the central angle θ of the channel opening is greater than the central angle γ, the first branch pipe or the second branch pipe is independently unidirectionally flowing when connected to the main body, and when the stopcock valve core is rotated, the sector valve can completely isolate the connection between the first branch pipe and the second branch pipe, avoiding cross-contamination of the water in the first branch pipe or the second branch pipe.

[0046] In use, the fan-shaped valve disc of the rotating valve core blocks the first and second branch pipe openings. At this time, the first and second branch pipes are isolated from the main pipe and no water is supplied. In traditional technical solutions, the valve disc structure is used to block the main pipe, but other branch pipes can still pass through the channel opening, leading to cross-contamination between the branch pipes. In this embodiment, because the central angle β of the fan-shaped valve disc is greater than the central angle α, the fan-shaped valve disc can completely block the first and second branch pipe openings. In the disconnected state, the first and second branch pipes are also isolated by the fan-shaped valve disc, avoiding cross-contamination.

[0047] When the operator rotates the stopcock valve core clockwise, the sector valve disc is rotated to the first branch pipe port. The channel port of the stopcock valve core connects the main pipe body and the second branch pipe body. Water flows from the main pipe body through the main pipe port, channel port, and second branch pipe port to the second branch pipe body, while the sector valve disc completely blocks the first branch pipe port, achieving one-way flow between the main pipe body and the second branch pipe body. When the operator rotates the valve core counterclockwise, the sector valve disc is rotated to the second branch pipe port. During the rotation, the sector valve disc always isolates the first branch pipe port from the second branch pipe port, preventing cross-contamination between the two pipe ports. The channel port of the stopcock valve core connects the main pipe body and the first branch pipe body. Water flows from the main pipe body through the main pipe port, channel port, and first branch pipe port to the first branch pipe body, while the sector valve disc completely blocks the first branch pipe port, achieving one-way flow between the main pipe body and the first branch pipe body.

[0048] This embodiment achieves both blocking and opening simultaneously through a single rotational motion, eliminating the possibility of water backflow. The physical blocking characteristics of the fan-shaped valve ensure that the blocked branch pipe opening is completely sealed, preventing the reverse mixing of the two water flows. In dental surgery, it can effectively maintain the unidirectional flow characteristics of the cooling water system, ensure water supply separation between different handles, and solve the problem of cross-contamination of water flow caused by shared pipes in dual-handle water supply systems.

[0049] In some embodiments, based on the above embodiments, such as Figure 1-4 As shown, a dental equipment cooling water supply system further includes a water supply pump body 200, a water supply pipe 300, a water supply branch pipe 400, and a handle 500. The output end of the water supply pump body 200 is connected to the end of the main body 120 through the water supply pipe 300. An indicator rod body 155 extends horizontally from the top of the stopcock valve core 150. The stopcock valve body 110 is provided with two on positions and one off position (not shown in the figure).

[0050] When the indicator rod 155 is aligned with one of the control positions, the main body 120 connects to the first branch pipe 130 or the second branch pipe 140 through the channel port 154. The ends of the first branch pipe 130 or the second branch pipe 140 are connected to a water supply branch pipe 400 and a handle 500 in sequence.

[0051] When the indicator rod 155 is aligned with the disconnect position, the fan-shaped valve disc 152 of the plug valve core 150 blocks the first branch port 113 and the second branch port 114.

[0052] In this embodiment, the alignment of the indicator rod with the conduction position provides a clear path selection indicator, reduces operational complexity and improves switching accuracy, and avoids malfunctions during frequent switching. When the indicator rod is aligned with the disconnect position, the fan-shaped valve flap blocks the first branch pipe opening and the second branch pipe opening, which can effectively prevent cross-contamination between the water in the first branch pipe and the water in the second branch pipe.

[0053] In existing technologies, dual-handle dental devices generally suffer from complex cooling water switching operations and a high risk of cross-contamination of tubing. Conventional solutions employ manual switching via independent water supply pipes or a shared main pipe with multiple clamps for control. The former requires frequent insertion and removal of tubing, affecting the sterile environment, while the latter suffers from unclear clamp markings, leading to misoperation. During clinical procedures, the operator's attention is focused on the patient's oral cavity and cannot be distracted by checking the tubing status, easily causing backflow of irrigation fluid or bacterial transmission.

[0054] It should be noted that some advanced dental equipment is equipped with automatic switching devices. These devices utilize electronic control systems and solenoid valves to automatically shut off the water supply to the other handpiece when one handpiece is activated, enabling quick and convenient switching. However, automatic switching devices are expensive, requiring components such as solenoid valves, pneumatic valves, and electronic control systems. Furthermore, installation and debugging require specialized technicians, making the installation process complex and increasing costs. The structure of automatic switching devices is also relatively complex, consisting of multiple components such as solenoid valves, sensors, and controllers. These components need precise coordination to achieve automatic switching; a malfunction in any component can cause the entire switching device to fail, making repairs difficult. The automatic switching device is also highly dependent on power or air supply. Solenoid valves and electronic controls require a stable power supply, while pneumatic valves require compressed air or other air sources for power. If the power or air supply fails, such as a power outage or insufficient air pressure, the automatic switching device will not function properly, potentially causing water supply interruptions to dental equipment and affecting treatment progress. Faults may also lead to inflexible, inaccurate, or even impossible switching, requiring timely repair or replacement of components. Otherwise, it will affect the normal use of the dental equipment, and maintenance requires specialized knowledge and skills; otherwise, it may lead to performance degradation or malfunction of the device. Therefore, the structure, methods, and implementation means of automatic control using the automatic switching device and related electronic controls such as solenoid valves are not within the scope of this embodiment.

[0055] Compared to existing technologies, traditional dual-clamp control schemes require simultaneous operation of two clamps to achieve branch switching, while this embodiment only requires a single rotation to complete the switching and indication. Furthermore, conventional dental water circuit control lacks intuitive directional functionality, requiring operators to rely on memory or additional labels to confirm valve status. In contrast, the correspondence between the indicator rod and the on / off positions on the stopcock valve body in this embodiment provides direct visual feedback.

[0056] This embodiment enables rapid switching and precise control of the cooling water supply for dual-handle dental equipment. The unidirectional conduction mechanism of the stopcock valve core eliminates the risk of cross-contamination between branches. The spatial correspondence between the indicator rod and the gear position improves operational accuracy. The operator can complete branch switching and flow control with one hand, which is especially suitable for treatment scenarios such as implant surgery that require frequent handpiece changes. It improves treatment efficiency while ensuring a sterile environment.

[0057] In some embodiments, based on the above embodiments, such as Figure 2As shown, a dental equipment cooling water supply system further includes a flow valve 160 respectively disposed on the first branch pipe 130 and the second branch pipe 140. The flow valve 160 includes a flow valve body 161 and a valve plug 162 disposed on the flow valve body 161. The two sides of the lower part of the valve plug 162 form a flow channel. The flow channel controls the flow area of ​​water in the first branch pipe 130 or the second branch pipe 140 when the valve plug 162 rotates.

[0058] In this embodiment, the flow control valve refers to a flow control device installed on two branch pipes respectively. Specifically, it can be a regulating valve with a rotating valve core. By adjusting the valve core angle, the flow area is changed, allowing the operator to independently control the flow of each branch. The valve plug is a cylindrical regulating component, specifically a rotating shaft structure with an axial through hole. Through holes are opened on both sides of its lower part to form a flow channel. By rotating the valve plug, the relative position of the channel opening and the branch pipe is changed, achieving linear control of the water flow cross-sectional area. The flow channel is the fluid path passing through both sides of the valve plug. Specifically, it can be set as a symmetrically distributed rectangular or arc-shaped opening. When the valve plug rotates around its axis, the gap area between the opening and the inner wall of the branch pipe changes continuously, thereby regulating the flow rate. When the valve plug is rotated, the direction of the flow channel opening on both sides of its lower part changes accordingly, resulting in a corresponding change in the annular gap area formed with the inner wall of the branch pipe. During operation, the water flow cross-sectional area can be continuously adjusted by rotating the valve plug, without the need to repeatedly open and close the pipe clamp.

[0059] This embodiment employs an independent dual-flow valve setup, allowing for separate adjustment of the two water flow paths to meet the cooling water requirements of different handles. Operators can adjust the flow rate with a single rotation, avoiding the cumbersome process of repeatedly confirming the clamping position required with traditional pipe clamps. Furthermore, traditional pipe clamps control flow by deforming the hose, making the clamping degree difficult to quantify and prone to pipe fatigue damage. This embodiment, however, uses a rigid flow valve structure to prevent the accumulation of flow errors caused by hose deformation, maintaining flow stability over extended use and effectively reducing the risk of cross-contamination due to improper adjustment.

[0060] In some embodiments, the inner wall of the flow valve body is provided with at least two recesses, and the at least two recesses are at the same height position. The recesses refer to the recessed structures formed by machining the inner wall surface of the flow valve body. Specifically, they can be implemented by a hemispherical groove distributed in a ring array, and the recess depth can be 0.5-1 mm.

[0061] The valve plug body has a protrusion at the height position corresponding to the concave position. When the protrusion is aligned with one of the concave positions, a stop is formed. The protrusion refers to the protruding structure on the surface of the valve plug body. Specifically, it can be a hemispherical boss that matches the shape of the concave position. It can be achieved by injection molding or machining. The concave position and the protrusion cooperate to form a mechanical limit to prevent the valve plug body from shifting during the adjustment process.

[0062] The number of flow levels is determined by the number of recesses, with different levels resulting in different flow areas in the branch pipe. When the flow valve needs to adjust the water flow, the valve plug is rotated to the target level. During rotation, the protrusion slides sequentially over each recess, and when it is fully aligned with a recess, the relative position of the flow channel and the branch pipe is locked. At this point, the axis of the flow channel forms a fixed angle with the axis of the branch pipe, and the effective cross-sectional area through which the water flows remains constant. The number of recesses determines the total number of adjustable levels; for example, four recesses can achieve four levels of flow regulation, with each level corresponding to a fixed flow area.

[0063] This embodiment achieves precise positioning of the water flow level during the adjustment process. In dental surgery, doctors can determine the level status by touch without visual assistance when operating with one hand. When it is necessary to switch between different flow rates, the mechanical feedback generated by the protrusion embedding into the concave position can effectively prevent sudden changes in water flow caused by accidental touch, and avoid abnormal flushing pressure caused by flow control errors.

[0064] like Figure 2 As shown, in some embodiments, an adjusting rod 163 is provided at the top of the valve plug 162, and a position indicator is provided on the flow valve body 161. When the adjusting rod 163 is rotated to a certain position indicator, the protrusion aligns with one of the concave positions. This embodiment achieves precise control of the flow valve position adjustment. The operator can quickly complete the setting by observing the position indicator without repeatedly testing the flow rate. The mechanical cooperation between the protrusion and the concave position provides clear tactile feedback, preventing valve position displacement due to accidental contact after adjustment, and ensuring the stability of water flow control.

[0065] like Figure 1 and 2 As shown, in some embodiments, the end of the main pipe 120 adopts a straight-insertion connector, and one end of the water supply pipe 300 is inserted into and fixed to the straight-insertion connector. The straight-insertion connector completes sealing and fixing simultaneously through axial insertion, simplifying the operation steps, realizing rapid assembly of the water supply pipeline without disrupting the aseptic operating environment. In dental surgery scenarios, it can effectively prevent secondary contamination caused by hand contact with the connection parts during operation, while eliminating the cooling water leakage caused by operational errors in traditional connection methods, ensuring the sealing reliability of the cooling water supply system during treatment.

[0066] In some embodiments, the water supply pipe is equipped with a pipe clamp. The pipe clamp is used to control the on / off state or flow rate of the water supply pipe, and its quick on / off function allows the valve to be replaced or maintained without interrupting other water circuits or stopping the water supply pump, thus ensuring the reliability and operational efficiency of the water supply system.

[0067] In some embodiments, such as Figure 1 and 2 As shown, the ends of the first branch pipe body 130 and the second branch pipe body 140 have threaded sections 170, and the water supply branch pipe 400 is connected to the threaded sections 170 through Luer lock joints. The threaded section refers to the helical groove structure machined at the end of the branch pipe body, which can be implemented using metric threads or NPT threads, providing the physical basis for the mechanical connection. The Luer lock joint is a standardized interface with a tapered fit and a rotary locking structure, which can be manufactured by injection molding or machining. Its inner wall taper is adapted to the geometry of the threaded section. Through the synergistic effect of the threaded section and the Luer lock joint, both the tensile strength of the threaded connection and the ease of operation of the plug-in connector are preserved.

[0068] like Figure 2 As shown, in some embodiments, the first branch pipe body 130 and the second branch pipe body 140 are provided with a check valve 180 between the threaded section 170 and the overflow valve 160. A check valve is a valve assembly that allows only unidirectional flow; it can be a spring-loaded or gravity-driven structure, and its installation position is between the overflow valve and the threaded section to block reverse flow. When cooling water enters the branch pipe body from the water supply pump body through the main pipe, the overflow valve can regulate the water flow towards the handle. After passing through the overflow valve, the water enters the threaded section area of ​​the branch pipe body, at which point the check valve is open, allowing forward flow. When reverse water flow occurs at the handle end due to pressure fluctuations or pump stoppage, the valve disc of the check valve is pushed closed by the reverse water pressure, forming a physical isolation barrier.

[0069] By installing check valves at specific locations on the branch pipes, the fluid channels are equipped with an automatic locking function, blocking reverse flow without manual intervention while maintaining uninterrupted forward water supply. In dental cleaning or implant surgery scenarios, when a handle is no longer in use, its corresponding branch pipe is immediately sealed by the check valve, eliminating the physical pathway for pathogens to spread through the water supply system and ensuring the sterility of the cooling water during treatment.

[0070] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A cooling water supply system for dental equipment, characterized in that, Includes a stopcock (100), said stopcock (100) comprising: The plug valve body (110) has an open central cavity (111) at the top. The central cavity (111) is radially provided with a main pipe port (112), a first branch pipe port (113), and a second branch pipe port (114) from the central axis. The main pipe port (112), the first branch pipe port (113), and the second branch pipe port (114) are respectively provided with a main pipe body (120), a first branch pipe body (130), and a second branch pipe body (140). A stopcock valve core (150) is sealed and inserted into the central cavity (111) and can rotate around the central axis. The stopcock valve core (150) includes a valve stem (151) and a sector-shaped valve disc (152) disposed on the valve stem (151). The sector-shaped valve disc (152) is provided with an arc wall (153) at the junction with the valve stem (151). The outer side of the sector-shaped valve disc (152) is in contact with the cavity wall of the central cavity (111). The flow portion between the valve stem (151) and the cavity wall of the central cavity (111) constitutes the channel port (154) of the stopcock valve core (150). The first branch port (113) and the second branch port (114), and the adjacent ones, enclose the central axis to form a first sector area. The first sector area has a central angle α. The central angle β of the sector valve (152) is greater than the central angle α. The first branch port (113) and the second branch port (114) are symmetrically distributed on both sides of the main port (112). The main port (112) and the first branch port (113), and the adjacent ones, enclose the central axis to form a second sector area. The second sector area has a central angle γ. The central angle θ of the channel port (154) is greater than the central angle γ.

2. The cooling water supply system for dental equipment according to claim 1, characterized in that: It also includes a water supply pump body (200), a water supply pipe (300), a water supply branch pipe (400), and a handle (500). The output end of the water supply pump body (200) is connected to the end of the main body (120) through the water supply pipe (300). A pointer rod (155) extends horizontally from the top of the stopcock valve core (150). The stopcock valve body (110) is provided with two on positions and one off position. When the indicator rod (155) is aligned with one of the control positions, the main body (120) connects to the first branch pipe (130) or the second branch pipe (140) through the channel (154). The ends of the first branch pipe (130) or the second branch pipe (140) are connected to a water supply branch pipe (400) and a handle (500) in sequence.

3. A dental equipment cooling water supply system according to claim 2, characterized in that, When the indicator rod body (155) is aligned with the disconnect position, the fan-shaped valve disc (152) of the plug valve core (150) blocks the first branch port (113) and the second branch port (114).

4. A dental equipment cooling water supply system according to claim 2, characterized in that: It also includes flow valves (160) respectively disposed on the first branch pipe body (130) and the second branch pipe body (140). The flow valve (160) includes a flow valve body (161) and a valve plug (162) disposed on the flow valve body (161). The two sides of the lower part of the valve plug (162) form a flow passage. The flow passage controls the flow area of ​​water in the first branch pipe body (130) or the second branch pipe body (140) when the valve plug (162) rotates.

5. A dental equipment cooling water supply system according to claim 4, characterized in that: The inner wall of the flow valve body (161) is provided with at least two recesses, which are at the same height. The valve plug body (162) is provided with a protrusion corresponding to the height of the recess. When the protrusion is aligned with one of the recesses, a stop is formed. The number of stops is set according to the number of recesses. Different stops result in different flow areas of the flow channel in the first branch pipe body (130) and the second branch pipe body (140).

6. A dental equipment cooling water supply system according to claim 5, characterized in that: The valve plug (162) is provided with an adjusting rod (163) at the top. The flow valve body (161) is provided with a gear mark. When the adjusting rod (163) is rotated to a certain gear mark, the protrusion is aligned with one of the concave parts.

7. A dental equipment cooling water supply system according to claim 2, characterized in that: The end of the main pipe (120) adopts a straight-insertion connector, and one end of the water supply pipe (300) is inserted into the straight-insertion connector for fixation.

8. A dental equipment cooling water supply system according to claim 2, characterized in that: The water supply pipe (300) is equipped with a pipe clamp.

9. A dental equipment cooling water supply system according to claim 4, characterized in that: The ends of the first branch pipe body (130) and the second branch pipe body (140) have threaded sections (170), and the water supply branch pipe (400) is connected to the threaded section (170) by a Luer lock joint.

10. A dental equipment cooling water supply system according to claim 9, characterized in that: The first branch pipe body (130) and the second branch pipe body (140) are provided with a check valve (180) between the threaded section (170) and the flow valve (160).

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