Multifunctional combination valve

Abstract

The invention discloses a multifunctional combination valve, which belongs to the field of building water supply systems and comprises a valve body, the valve body is of a staggered pipeline structure, a control pipe is arranged in the middle of the valve body, a water replenishing assembly is mounted in the control pipe, a pressure reducing pipe is arranged between a water inlet of the valve body and the control pipe, and a pressure reducing valve is mounted in the pressure reducing pipe. A non-return device is installed at the water inlet end of the valve body, one end of the non-return device is inserted into the valve body and connected with the valve body in a clamped mode, a drainage device is installed at the water outlet end of the valve body, one end of the drainage device is inserted into the valve body and connected with the valve body in a clamped mode, and a medium sequentially passes through the non-return device, the pressure reducing pipe, the control pipe and the drainage device. The valve can integrate multiple functions of water replenishing, pressure reduction, backflow prevention and the like, has a unique drainage function, and can replenish an anti-freezing agent in a cold region, so that installation and maintenance are simplified, and the operation efficiency of a system is improved.

Description

Technical Field

[0001] The present application relates to the field of building water supply systems, and in particular to a multifunctional combination valve. Background Art

[0002] Currently, building water supply systems, especially closed-loop heating or cooling systems, often require multiple independent valves, including pressure reducing valves, water supply valves, check valves, and shut-off valves, to ensure proper system operation. These independent valves not only increase installation space and costs, but also complicate maintenance.

[0003] In cold regions, such as Northern Europe, water supply systems also face a special challenge: antifreeze and other media need to be regularly added to the system to prevent pipes from freezing. There are already some solutions for antifreeze valves in the prior art, such as using electric heating wires or insulation structures to prevent valves from freezing. Relevant prior art includes the Chinese patent application "A valve faucet that prevents frostbite", application number: CN202323391710.5; it discloses a valve pipe, a lower valve seat, an upper valve seat, a valve head, an external pipe, an antifreeze structure, a fixed structure and a circuit breaker. The lower valve seat is installed above the middle of the valve pipe, the upper valve seat is installed above the lower valve seat, the valve head is installed on the top of the upper valve seat, and external pipes are provided at both ends of the valve pipe. The antifreeze structure is installed on the outer wall of the external pipe where it is connected to the valve pipe, the end of the antifreeze structure is provided with a fixed structure, and a circuit breaker is installed on one side of the antifreeze structure. This anti-freeze valve faucet incorporates an antifreeze structure on the outside of the valve tube, where it connects to the external pipe. This structure heats and insulates the valve faucet by adding a heating wire. A circuit breaker with automatic power-off is also included to ensure safety during use. However, this solution primarily focuses on preventing the valve from freezing and fails to achieve the function of quantitatively adding antifreeze.

[0004] Existing water supply systems also require pressure reducing valves to reduce and stabilize water pressure, as well as check valves to prevent backflow, adding complexity. Consequently, there is an urgent need for new valves that integrate multiple functions, simplify installation and maintenance, and accommodate the addition of antifreeze to meet the unique needs of building water supply systems in cold regions. Such integrated, intelligent valves hold significant application value, particularly in extremely cold regions like Northern Europe. Summary of the Invention

[0005] The technical problem to be solved by the present application is to provide a multifunctional combination valve which can integrate multiple functions such as water replenishment, pressure reduction, and backflow prevention into one, and has a unique drainage function, which can realize the replenishment of antifreeze in cold areas, thereby simplifying installation and maintenance and improving system operation efficiency.

[0006] The technical solution adopted in this application is: a multifunctional combination valve, including a valve body, the valve body is a staggered pipe structure, a control pipe is provided in the middle of the valve body, a water supply component is installed in the control pipe, a pressure reducing pipe is provided between the water inlet of the valve body and the control pipe, a pressure reducing valve is installed in the pressure reducing pipe, a check valve is installed at the water inlet end of the valve body, one end of the check valve is inserted into the valve body and clamped with the valve body, a diverter is installed at the water outlet end of the valve body, one end of the diverter is inserted into the valve body and clamped with the valve body, and the medium passes through the check valve, the pressure reducing pipe, the control pipe, and the diverter in sequence.

[0007] Compared to existing technologies, the advantages of this application lie in its ingenious integration of multiple functional components, including a backstop, pressure-reducing pipe, control pipe, and flow diverter, into a single valve body. This interlaced piping design achieves multiple functions, avoiding the complexity of traditional, serially installed, independent valves. The backstop and flow diverter utilize a plug-in, snap-on design, making installation, removal, and maintenance more convenient. The backstop and flow diverter can also be installed or removed according to user needs, providing flexibility. The flow path design, which sequentially routes the medium through the backstop, pressure-reducing pipe, control pipe, and flow diverter, ensures the effective operation of each functional component and seamlessly connects functions such as backflow prevention, pressure reduction, water replenishment, and drainage. The flow diverter allows for quantitative replenishment of antifreeze, while the pressure-reducing valve in the pressure-reducing pipe maintains system pressure stability, and the backstop effectively prevents backflow. Compared to traditional solutions that require the procurement and installation of multiple independent valves, this application not only saves installation space and material costs, but also reduces system maintenance and operating costs.

[0008] In some embodiments of the present application, the pressure-reducing tube is arranged perpendicular to the valve body, and a mounting seat for installing the pressure-reducing valve is arranged in the pressure-reducing tube, and the mounting seat is a circular tubular structure, a water inlet is provided on the mounting seat, and a water outlet is provided on the pressure-reducing tube, and the water outlet of the pressure-reducing tube is arranged opposite to the water inlet; the pressure-reducing valve includes a pressure-reducing valve stem, the pressure-reducing valve stem and the mounting seat are coaxially arranged, and both ends of the pressure-reducing valve stem pass through the mounting seat and are respectively recorded as the first end and the second end, the first end of the pressure-reducing valve stem is sealed with the inner wall surface of the mounting seat, and there is a gap between the second end of the pressure-reducing valve stem and the end face of the mounting seat for the medium to pass through, and the medium enters the mounting seat from the water inlet and is discharged to the water outlet through the gap.

[0009] Specifically, a sealing ring is provided on the outer circumference of the first end of the pressure reducing valve stem, and the sealing ring realizes a sealed connection between the first end of the pressure reducing valve stem and the inner wall surface of the mounting seat. In the present application, the pressure reducing valve stem moves axially under force, thereby adjusting the size of the gap and further adjusting the flow rate of the medium.

[0010] In some embodiments of the present application, the first end of the pressure-reducing valve stem is connected to the valve seat, the valve seat is sealed and connected to the inner wall of the pressure-reducing tube, the valve seat is located on the outside of the mounting seat, one end of the valve seat is connected to the pressure-reducing valve stem, and the other end of the valve seat is connected to the adjusting nut through a pressure-reducing spring, and the adjusting nut is installed in the pressure-reducing tube, and the pressure-reducing spring applies a force to the valve seat to move toward the side of the valve stem, and the valve seat rests on the end face of the mounting seat under the action of the pressure-reducing spring; a pressure-reducing hole is provided on the mounting seat, and the pressure-reducing hole passes through the mounting seat axially, and the pressure-reducing hole is provided near the water outlet of the pressure-reducing tube.

[0011] In other words, the medium exiting the gap passes through the pressure-reducing hole and reaches one end of the valve seat. At this point, the valve seat is subjected to the pressure of the medium and the thrust of the pressure-reducing spring, both acting in opposite directions. If the medium pressure is less than or equal to the thrust of the pressure-reducing spring, the valve seat remains in position, resting against the end face of the mounting seat. If the medium pressure is greater than the thrust of the pressure-reducing spring, the valve seat moves away from the mounting seat, further compressing the pressure-reducing spring until the medium pressure equals the thrust of the compression spring. As the valve seat drives the pressure-reducing valve stem, the gap between the second end of the valve stem and the end face of the mounting seat decreases, reducing the flow of medium through the gap and achieving the purpose of pressure reduction.

[0012] In some embodiments of the present application, the second end of the pressure reducing valve stem is a truncated cone-shaped structure, the second end of the pressure reducing valve stem is connected to the valve head, the valve head is located outside the two ends of the mounting seat, and a sealing gasket is provided on the side surface of the valve head close to the pressure reducing pipe. The diameter of the second end of the pressure reducing valve stem close to the valve head is larger than the diameter of the end away from the valve head. The movement of the valve stem changes the size of the gap between the second end of the pressure reducing valve stem and the end face of the mounting seat.

[0013] Specifically, if the pressure of the incoming medium is too high, it will drive the pressure reducing valve stem toward the end where the valve seat is located. The gap between the second end of the pressure reducing valve stem and the end face of the mounting seat will become smaller, and the flow rate of the medium that can pass through will decrease, achieving the purpose of reducing pressure. As the pressure of the subsequent incoming medium decreases, the pressure reducing spring will apply force to drive the pressure reducing valve stem toward the end where the valve head is located. The gap between the second end of the pressure reducing valve stem and the end face of the mounting seat will increase, and the flow rate of the medium that can pass through will increase, achieving the purpose of increasing flow and pressure.

[0014] In this application, the pressure-reducing valve stabilizes the pressure of the medium. The design of the flow path within the valve reduces water pressure by creating localized resistance to the water flow. The pressure differential between the inlet and outlet automatically adjusts the position of the valve stem, maintaining stable pressure. This design ensures smooth, vibration-free operation, eliminates spring corrosion and metal fatigue failure, and provides excellent sealing performance, reducing both dynamic and static pressure.

[0015] Specifically, the end face of the pressure-reducing tube at the valve head end of this application is sealed. The end face of the pressure-reducing tube at the valve seat end is open and sealed with a plug. The pressure-reducing tube at the valve seat end is provided with internal and external threads. The plug is installed on the pressure-reducing tube via the external threads, and the adjusting nut is threadedly connected to the pressure-reducing tube. In other words, this application allows the user to rotate the adjusting nut according to actual needs, changing the position of the adjusting nut, thereby changing the thrust applied to the valve seat by the pressure-reducing spring, thus providing a high degree of freedom.

[0016] In some embodiments of the present application, the control tube is arranged perpendicular to the valve body, and the control tube is arranged perpendicular to the pressure reducing tube, and an inlet and an outlet are provided on the control tube. The inlet of the control tube is connected to the pressure reducing tube, and the outlet of the control tube is connected to the diverter. The inlet and outlet of the control tube are staggered in the axial direction of the control tube; a water replenishment assembly is installed at the end where the inlet of the control tube is located, and the end where the outlet of the control tube is located is open to form a drain outlet.

[0017] In order to realize the installation of a valve with multiple functions in the valve body, the present application designs the entire valve body into a staggered pipe structure. When the water supply system pipeline is closed, the excess medium in the diverter will flow back to the control pipe and be discharged through the drain port.

[0018] In some embodiments of the present application, the water replenishment assembly includes a water replenishment valve stem, one end of the water replenishment valve stem passes through the upper end of the control tube and is connected to the press-button switch, and the other end of the valve stem is connected to the water replenishment spring. The water replenishment spring applies force to the water replenishment valve stem so that the water replenishment valve stem is located at the upper limit position. Pressing the press-button switch downward will drive the valve stem to move downward to connect the inlet and the water outlet; a valve core is provided on the water replenishment valve stem, and the valve core is in the shape of a stepped cone and includes an upper cone and a lower cone. The control tube is provided with an inner cylinder wall corresponding to the valve core, and the inner cylinder wall includes an upper cone wall and a lower cone wall. The outer surface of the upper cone is provided with at least two layers of sealing layers, and the upper cone is sealed to the upper cone wall through the sealing layer; pressing the press-button switch downward pushes the valve core to move downward, and when the upper cone of the valve core completely leaves the upper cone wall, the inlet and the outlet are connected, and the lower cone enters the lower cone wall and is sealed to the lower cone wall; when the water replenishment valve stem is at the upper limit position, the upper cone is located below the inlet.

[0019] In this application, for the convenience of description, the Figure 2 Use the benchmark to describe and distinguish between upper and lower levels.

[0020] In this application, the upper limit of the water supply valve stem is achieved through the top of the valve stem and the control tube; the lower limit of the water supply valve stem is achieved by pressing the switch and the control tube, ensuring that the water supply valve stem moves within a predetermined stroke range.

[0021] After the valve stem moves downward a certain distance, the channels at both ends of the control tube are opened, allowing the medium to flow through the control tube to the water outlet of the valve body. At the same time, the lower cone enters the lower cylinder wall, closing the drain port in this application. In other words, the medium needs to overcome a certain amount of spring pressure to pass through the control tube. When the push button is not pressed, the combination valve in this application is in the closed state.

[0022] In some embodiments of the present application, a drainage joint is installed in the drainer, and the drainage joint has a trumpet-shaped structure. The end of the drainage joint close to the valve body is recorded as the front end, and the end of the drainage joint away from the valve body is recorded as the rear end. The diameter of the drainage joint gradually decreases from the front end to the rear end. The front end of the drainage joint is sealingly connected to the inner wall surface of the drainer, and there is a distance between the middle part of the drainage joint and the inner wall surface of the drainer.

[0023] The diameter of the drainage connector gradually decreases from the front to the back, increasing the flow rate of the medium and thus reducing the pressure of the medium according to the Bernoulli principle. The front end of the drainage connector is tightly connected to the inner wall of the drain, ensuring that any medium entering the drain will pass through the drainage connector.

[0024] In some embodiments of the present application, a drainage port is provided on the surface of the drainer, which is sealed by a detachable plug, and the drainage port is correspondingly arranged on the periphery of the drainage joint; the medium introduced from the drainage port reaches the periphery of the drainage joint, and the medium passing through the drainage joint drives the output drainer.

[0025] As the medium passes through the drain, it accelerates, reducing the pressure there. The user can operate the plug to open the drain port, preventing the medium from being discharged through the drain port. Alternatively, by adding a medium such as antifreeze to the drain port, the antifreeze will enter the drain and be carried away by the medium passing through the drainage connector and out of the drain due to the siphon effect.

[0026] In some embodiments of the present application, a drainage tube is installed in the drainer, and the drainage tube is installed on the rear side of the drainage joint, and there is a distance between the drainage tube and the drainage joint, the inner diameter of the drainage tube is larger than the inner diameter of the rear end of the drainage joint, and the inner diameter of the drainage tube is smaller than the inner diameter of the front end of the drainage joint; the drainage tube is threadedly connected to the inner wall of the drainer.

[0027] In this application, a drainage tube is provided to separate the drainer into two parts. The inner diameter of the drainage tube is slightly larger than the inner diameter of the rear end of the drainage joint, and can cooperate with the drainage joint to achieve drainage and avoid interference with the subsequent pipeline environment.

[0028] In this application, for the convenience of description, the front and rear of components are mainly distinguished by the front and rear order through which media flow.

[0029] In some embodiments of the present application, a sealing ring and a slot are sequentially provided on the outer peripheral surface of the water inlet end of the diverter, the water inlet end of the diverter is inserted into the water outlet end of the valve body, a slot corresponding to the slot is provided on the surface of the water outlet end of the valve body, a retaining spring is installed at the slot of the valve body, and the retaining spring passes through the slot and is embedded in the slot; the diverter as a whole is a bent pipe structure, the diverter includes a bending section, the drainage joint and the drainage tube are located in front of the bending section, and the medium passes through the drainage joint, the drainage tube, and the bending section of the diverter in sequence.

[0030] In this application, the connection between the diverter and the valve body is a detachable snap-fit structure. The entire combination valve can be assembled according to the user's usage requirements to achieve non-standard usage requirements. In this application, the check valve and the valve body also use the same snap-fit structure, which will not be described in detail here.

[0031] A check valve is installed within the check valve; a check valve is installed within the water inlet of the valve body, and the two check valves are connected in series. Specifically, in this application, the flow diverter is a 90-degree elbow structure; the check valve is a 90-degree elbow structure. Because this application allows the user to add a check valve to assemble the entire combination valve according to their needs, non-standard usage requirements can be met.

[0032] The above embodiments can be combined arbitrarily based on the common knowledge in this field. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. In addition, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the described objects and may contain exaggerated representations. The drawings are not necessarily drawn to scale.

[0034] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is the front view of the application; Figure 3 for Figure 2 Cross-sectional view of section AA; Figure 4 for Figure 2 Cross-sectional view of the middle BB section; Figure 5 A top view of the present application; Figure 6 for Figure 5 Cross-sectional view of the CC section; Figure 7 for Figure 6 A partial enlarged view of the backstop.

[0035] Among them, the specific descriptions of the figure marks are as follows: 1. Valve body; 2. Control pipe; 2a. Inlet; 2b. Outlet; 3. Pressure reducing pipe; 31. Water inlet; 32. Water outlet; 33. Plug; 4. Check valve; 5. Drainage device; 51. Drainage port; 6. Mounting seat; 61. Pressure reducing hole; 62. Gap; 7. Pressure reducing valve stem; 8. Valve seat; 9. Pressure reducing spring; 10. Adjusting nut; 11. Valve head; 12. Sealing gasket; 13. Water supply valve stem; 14. Press switch; 15. Water supply spring; 16a. Upper cone; 16b. Lower cone; 17a. Upper cylinder wall; 17b. Lower cylinder wall; 18. Drainage joint; 19. Plug; 20. Drainage pipe; 21. Slot; 22. Retaining spring; 23. Bayonet. DETAILED DESCRIPTION

[0036] The present application will be described in detail below with reference to the accompanying drawings.

[0037] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0038] Multifunctional combination valve, embodiment 1 Figure 1 As shown: it includes a valve body 1, which has a staggered pipe structure. A control pipe 2 is provided in the middle of the valve body 1, and a water supply component is installed in the control pipe 2. A pressure reducing pipe 3 is provided between the water inlet of the valve body 1 and the control pipe 2, and a pressure reducing valve is installed in the pressure reducing pipe 3. A check valve 4 is installed at the water inlet end of the valve body 1. Multiple functional components such as the check valve 4, the pressure reducing pipe 3, the control pipe 2 and the flow guide 5 are cleverly integrated into one valve body 1. Through the staggered pipe structure design, a combination of multiple functions is realized, avoiding the complexity of the traditional need to install multiple independent valves in series.

[0039] One end of the backstop 4 is inserted into the valve body 1 and snap-fitted thereto. A flow diverter 5 is mounted on the water outlet 32 of the valve body 1. One end of the flow diverter 5 is inserted into the valve body 1 and snap-fitted thereto. The backstop 4 and flow diverter 5 utilize an insert-and-snap-fit structure, making installation, removal, and maintenance more convenient. The backstop 4 and flow diverter 5 can also be installed or removed according to the user's actual needs, providing flexibility.

[0040] The medium passes through the check valve 4, the pressure reducing pipe 3, the control pipe 2, and the diverter 5 in sequence. This ensures the effective operation of each functional component and realizes the orderly connection of functions such as backflow prevention, pressure reduction, water replenishment, and drainage. By setting the diverter 5, the quantitative replenishment of antifreeze can be achieved. At the same time, the pressure reducing valve in the pressure reducing pipe 3 can maintain the stability of the system pressure, and the check valve 4 effectively prevents the backflow of the medium. Compared with the traditional solution that requires the purchase and installation of multiple independent valves, this application not only saves installation space and material costs, but also reduces the maintenance difficulty and operating costs of the system.

[0041] Example 2, as Figures 1 to 4 As shown, the pressure reducing pipe 3 is arranged perpendicular to the valve body 1, and a mounting seat 6 for installing the pressure reducing valve is arranged in the pressure reducing pipe 3. The mounting seat 6 is a circular tubular structure, and a water inlet 31 is provided on the mounting seat 6. A water outlet 32 is provided on the pressure reducing pipe 3, and the water outlet 32 of the pressure reducing pipe 3 is arranged opposite to the water inlet 31; the pressure reducing valve includes a pressure reducing valve stem 7, which is coaxially arranged with the mounting seat 6, and both ends of the pressure reducing valve stem 7 pass through the mounting seat 6 and are respectively recorded as the first end and the second end. The first end of the pressure reducing valve stem 7 is sealed with the inner wall surface of the mounting seat 6, and there is a gap 62 between the second end of the pressure reducing valve stem 7 and the end face of the mounting seat 6 for the medium to pass through. The medium enters the mounting seat 6 from the water inlet 31 and is discharged to the water outlet 32 through the gap 62.

[0042] Specifically, a sealing ring is provided on the outer circumference of the first end of the pressure reducing valve stem 7, which realizes a sealed connection between the first end of the pressure reducing valve stem 7 and the inner wall surface of the mounting seat 6. In the present application, the pressure reducing valve stem 7 moves axially under force, thereby adjusting the size of the gap 62 and further adjusting the flow rate of the medium.

[0043] The first end of the pressure-reducing valve stem 7 is connected to the valve seat 8, and the valve seat 8 is sealed with the inner wall of the pressure-reducing pipe 3. The valve seat 8 is located on the outside of the mounting seat 6. One end of the valve seat 8 is connected to the pressure-reducing valve stem 7, and the other end of the valve seat 8 is connected to the adjusting nut 10 through a pressure-reducing spring 9. The adjusting nut 10 is installed in the pressure-reducing pipe 3. The pressure-reducing spring 9 applies a force to the valve seat 8 to move toward the side of the valve stem. The valve seat 8 rests on the end face of the mounting seat 6 under the action of the pressure-reducing spring 9; a pressure-reducing hole 61 is provided on the mounting seat 6, and the pressure-reducing hole 61 passes through the mounting seat 6 in the axial direction. The pressure-reducing hole 61 is arranged near the water outlet 32 of the pressure-reducing pipe 3.

[0044] That is, the medium drawn from the gap 62 will pass through the pressure-reducing hole 61 to one end of the valve seat 8. At this time, the valve seat 8 will be subjected to the pressure of the medium and the thrust of the pressure-reducing spring 9, both in opposite directions. If the pressure of the medium is less than or equal to the thrust of the pressure-reducing spring 9, the position of the valve seat 8 will remain unchanged, resting against the end face of the mounting seat 6. If the pressure of the medium is greater than the thrust of the pressure-reducing spring 9, the valve seat 8 will move toward the end away from the mounting seat 6, further compressing the pressure-reducing spring 9 until the pressure of the medium equals the thrust of the compression spring. In the process of the valve seat 8 driving the pressure-reducing valve stem 7 to move, the gap 62 between the second end of the valve stem and the end face of the mounting seat 6 will be reduced, so that the flow of the medium through the gap 62 becomes smaller, thereby achieving the purpose of pressure reduction.

[0045] The second end of the pressure reducing valve stem 7 is a truncated cone-shaped structure. The second end of the pressure reducing valve stem 7 is connected to the valve head 11. The valve head 11 is located outside the two ends of the mounting seat 6. A sealing gasket 12 is provided on the side of the valve head 11 close to the pressure reducing pipe 3. The diameter of the second end of the pressure reducing valve stem 7 close to the valve head 11 is larger than the diameter of the end away from the valve head 11. The movement of the valve stem changes the size of the gap 62 between the second end of the pressure reducing valve stem 7 and the end face of the mounting seat 6.

[0046] Specifically, if the pressure of the incoming medium is too high, it will drive the pressure reducing valve stem 7 to move toward the end where the valve seat 8 is located. As a result, the gap 62 between the second end of the pressure reducing valve stem 7 and the end surface of the mounting seat 6 will become smaller, and the flow rate of the medium that can pass through will decrease, achieving the purpose of reducing pressure. If the pressure of the medium that subsequently enters decreases, the pressure reducing spring 9 will apply force to drive the pressure reducing valve stem 7 to move toward the end where the valve head 11 is located. The gap 62 between the second end of the pressure reducing valve stem 7 and the end surface of the mounting seat 6 will increase, and the flow rate of the medium that can pass through will increase, achieving the purpose of increasing flow and pressure.

[0047] In this application, the pressure-reducing valve functions to stabilize the medium's pressure. The design of the flow path within the valve reduces water pressure by creating localized resistance to the water flow. The pressure differential between the water inlet 31 and the water outlet 32 automatically adjusts the position of the pressure-reducing valve stem 7, maintaining stable pressure. This design ensures smooth, vibration-free operation, eliminates spring corrosion and metal fatigue failure, and provides excellent sealing performance, reducing both dynamic and static pressure.

[0048] Specifically, the end face of the pressure-reducing tube 3 at the end where the valve head 11 is located in this application is sealed. The end face of the pressure-reducing tube 3 at the end where the valve seat 8 is located is open and sealed with a plug 33. The pressure-reducing tube 3 at the end where the valve seat 8 is located is provided with internal and external threads. The plug 33 is installed on the pressure-reducing tube 3 via the external threads, and the adjusting nut 10 is threadedly connected to the pressure-reducing tube 3. In other words, this application allows the adjusting nut 10 to be rotated according to the actual needs of the user, changing the position of the adjusting nut 10, thereby changing the thrust applied to the valve seat 8 by the pressure-reducing spring 9, thus providing a high degree of freedom.

[0049] The rest of the content of the second embodiment is the same as that of the first embodiment.

[0050] Example 3, as Figures 5 to 7 As shown, the control pipe 2 is arranged perpendicular to the valve body 1, and the control pipe 2 is arranged perpendicular to the pressure reducing pipe 3. The control pipe 2 is provided with an inlet 2a and an outlet 2b. The inlet 2a of the control pipe 2 is connected to the pressure reducing pipe 3, and the outlet 2b of the control pipe 2 is connected to the flow diverter 5. The inlet 2a and the outlet 2b of the control pipe 2 are staggered in the axial direction of the control pipe 2; a water replenishment component is installed at the end where the inlet 2a of the control pipe 2 is located, and the end where the outlet 2b of the control pipe 2 is located is open to form a drain outlet.

[0051] In order to realize the installation of a multi-functional valve in the valve body 1, the entire valve body 1 is designed to be a staggered pipe structure. After the water supply system pipeline is closed, the excess medium in the diverter 5 will flow back to the control pipe 2 and be discharged through the drain port.

[0052] The water replenishment assembly includes a water replenishment valve stem 13, one end of the water replenishment valve stem 13 passes through the upper end of the control tube 2 and is connected to the press switch 14, and the other end of the valve stem is connected to the water replenishment spring 15. The water replenishment spring 15 applies force to the water replenishment valve stem 13 so that the water replenishment valve stem 13 is located at the upper limit position. Pressing the press switch 14 downward will drive the valve stem to move downward to connect the inlet 2a and the water outlet 32; a valve core is provided on the water replenishment valve stem 13, and the valve core is in the shape of a stepped cone and includes an upper cone 16a and a lower cone 16b. The control tube 2 is provided with an inner cylinder wall corresponding to the valve core, and the inner The cylinder wall includes an upper cylinder wall 17a and a lower cylinder wall 17b. The outer surface of the upper cylindrical platform 16a is provided with at least two layers of sealing layers. The upper cylindrical platform 16a is sealedly connected to the upper cylinder wall 17a through the sealing layer. Pressing the press switch 14 pushes the valve core to move downward; when the upper cylindrical platform 16a of the valve core completely leaves the upper cylinder wall 17a, the inlet 2a and the outlet 2b are connected, and the lower cylindrical platform 16b enters the lower cylinder wall 17b and is sealedly connected to the lower cylinder wall 17b; when the water supply valve stem 13 is at the upper limit position, the upper cylindrical platform 16a is located at the lower position of the inlet 2a.

[0053] In this application, for the convenience of description, the Figure 2 Use the benchmark to describe and distinguish between upper and lower levels.

[0054] In this application, the upper limit of the water supply valve stem 13 is achieved through the top of the valve stem and the control tube 2; the lower limit of the water supply valve stem 13 is achieved by pressing the switch 14 and the control tube 2, ensuring that the water supply valve stem 13 moves within a predetermined stroke range.

[0055] After the valve stem moves downward a certain distance, the channels at both ends of the control tube 2 are opened, allowing the medium to flow through the control tube 2 to the water outlet 32 of the valve body 1. Simultaneously, the lower truncated plate 16b enters the lower cylindrical wall 17b, closing the drain port in this application. This means that the medium must overcome a certain amount of spring pressure to pass through the control tube 2. When the push-button 14 is not pressed, the combination valve in this application is in the closed state.

[0056] The rest of the content of the third embodiment is the same as that of the first or second embodiment.

[0057] Example 4, as Figures 1 to 7 As shown, a drainage joint 18 is installed in the drainer 5. The drainage joint 18 has a trumpet-shaped structure. The end of the drainage joint 18 close to the valve body 1 is recorded as the front end, and the end of the drainage joint 18 away from the valve body 1 is recorded as the rear end. The diameter of the drainage joint 18 gradually decreases from the front end to the rear end. The front end of the drainage joint 18 is sealingly connected to the inner wall surface of the drainer 5, and there is a distance between the middle part of the drainage joint 18 and the inner wall surface of the drainer 5.

[0058] The diameter of the drainage connector 18 gradually decreases from the front end to the back end. According to Bernoulli's principle, this increases the flow rate of the medium and thus reduces the pressure of the medium. The front end of the drainage connector 18 is sealed with the inner wall of the drainer 5, ensuring that the medium entering the drainer 5 passes through the drainage connector 18.

[0059] A drainage port 51 is provided on the surface of the drainer 5, which is sealed by a detachable plug 19. The drainage port 51 is correspondingly arranged on the outer periphery of the drainage joint 18; the medium introduced through the drainage port 51 reaches the outer periphery of the drainage joint 18, and is driven out of the drainer 5 by the medium passing through the drainage joint 18.

[0060] As the medium passes through the drain 5, the pressure there is reduced due to the acceleration of the medium. The user can operate the plug 19 to open the drain port 51, and the medium will not be discharged from the drain port 51. Alternatively, if a medium such as antifreeze is added to the drain port 51, the antifreeze will enter the drain 5 and be carried out of the drain 5 by the medium passing through the drainage connector 18 due to the siphon effect.

[0061] A drainage tube 20 is installed in the drainer 5. The drainage tube 20 is installed on the rear side of the drainage joint 18, and there is a distance between the drainage tube 20 and the drainage joint 18. The inner diameter of the drainage tube 20 is larger than the inner diameter of the rear end of the drainage joint 18, and the inner diameter of the drainage tube 20 is smaller than the inner diameter of the front end of the drainage joint 18; the drainage tube 20 is threadedly connected to the inner wall of the drainer 5.

[0062] In this application, a drainage tube 20 is provided to separate the drainer 5 into two parts. The inner diameter of the drainage tube 20 is slightly larger than the inner diameter of the rear end of the drainage joint 18, and can cooperate with the drainage joint 18 to achieve drainage and avoid interference with the subsequent pipeline environment.

[0063] In this application, for the convenience of description, the front and rear of components are mainly distinguished by the front and rear order through which media flow.

[0064] The outer peripheral surface of the water inlet end of the diverter 5 is sequentially provided with a sealing ring and a slot 21. The water inlet end of the diverter 5 is inserted into the water outlet 32 end of the valve body 1. The surface of the water outlet end of the valve body 1 is provided with a slot 23 corresponding to the slot 21. A retaining spring 22 is installed at the slot 23 of the valve body 1. The retaining spring 22 passes through the slot 23 and is embedded in the slot 21. The diverter 5 is a bent pipe structure as a whole. The diverter 5 includes a bent section. The drainage joint 18 and the drainage pipe 20 are located in front of the bent section. The medium passes through the drainage joint 18, the drainage pipe 20, and the bent section of the diverter 5 in sequence.

[0065] In this application, the connection between the flow guide 5 and the valve body 1 is a detachable snap-fit structure. The entire combination valve can be assembled according to the user's usage requirements to achieve non-standard usage requirements. In this application, the check valve 4 and the valve body 1 also use the same snap-fit structure, which will not be described here.

[0066] The check valve 4 is installed inside the check valve; the water inlet of the valve body 1 is also equipped with a check valve, and the two check valves are connected in series. Specifically, in this application, the flow guide 5 is an entire 90-degree elbow structure; the check valve 4 is an entire 90-degree elbow structure. However, because the present application allows the check valve 4 to be added according to the user's needs, the entire combination valve can be assembled to meet non-standard usage requirements.

[0067] The rest of the fourth embodiment is the same as any of the above embodiments.

[0068] The present application has been described in detail above. Specific examples have been used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application and its core concepts. It should be noted that, without departing from the principles of the present application, a number of improvements and modifications may be made to the present application by a person skilled in the art, and such improvements and modifications shall fall within the scope of protection of the claims of the present application.

Claims

1. Multifunctional combination valve, characterized in that: The invention comprises a valve body (1), wherein the valve body (1) is in a staggered pipe structure, a control pipe (2) is provided in the middle of the valve body (1), a water supply component is installed in the control pipe (2), a pressure reducing pipe (3) is provided between the water inlet of the valve body (1) and the control pipe (2), a pressure reducing valve is installed in the pressure reducing pipe (3), a check valve (4) is installed at the water inlet end of the valve body (1), one end of the check valve (4) is inserted into the valve body (1) and is clamped with the valve body (1), a flow diverter (5) is installed at the water outlet (32) end of the valve body (1), one end of the flow diverter (5) is inserted into the valve body (1) and is clamped with the valve body (1), and the medium passes through the check valve (4), the pressure reducing pipe (3), the control pipe (2), and the flow diverter (5) in sequence.

2. The multifunctional combination valve according to claim 1, characterized in that: The pressure reducing pipe (3) is arranged perpendicular to the main body of the valve body (1). A mounting seat (6) for mounting the pressure reducing valve is arranged in the pressure reducing pipe (3). The mounting seat (6) is a circular tubular structure. A water inlet (31) is arranged on the mounting seat (6). A water outlet (32) is arranged on the pressure reducing pipe (3). The water outlet (32) of the pressure reducing pipe (3) is arranged opposite to the water inlet (31). The pressure reducing valve includes a pressure reducing valve stem (7). The pressure reducing valve stem (7) and the mounting seat (6) are coaxially arranged. Both ends of the pressure reducing valve stem (7) pass through the mounting seat (6) and are respectively recorded as the first end and the second end. The first end of the pressure reducing valve stem (7) is sealedly connected to the inner wall surface of the mounting seat (6). A gap (62) for medium to pass through is provided between the second end of the pressure reducing valve stem (7) and the end surface of the mounting seat (6). The medium enters the mounting seat (6) from the water inlet (31) and is guided out to the water outlet (32) through the gap (62).

3. The multifunctional combination valve according to claim 2, characterized in that: The first end of the pressure reducing valve stem (7) is connected to the valve seat (8), and the valve seat (8) is sealed and connected to the inner wall of the pressure reducing pipe (3). The valve seat (8) is located outside the mounting seat (6). One end of the valve seat (8) is connected to the pressure reducing valve stem (7), and the other end of the valve seat (8) is connected to the adjusting nut (10) through a pressure reducing spring (9). The adjusting nut (10) is installed in the pressure reducing pipe (3). The pressure reducing spring (9) applies a force to the valve seat (8) to move toward the valve stem. Under the action of the pressure reducing spring (9), the valve seat (8) abuts against the end face of the mounting seat (6). A pressure reducing hole (61) is provided on the mounting seat (6), and the pressure reducing hole (61) penetrates the mounting seat (6) in the axial direction. The pressure reducing hole (61) is provided near the water outlet (32) of the pressure reducing pipe (3).

4. The multifunctional combination valve according to claim 3, characterized in that: The second end of the pressure reducing valve stem (7) is a truncated cone-shaped structure. The second end of the pressure reducing valve stem (7) is connected to the valve head (11). The valve head (11) is located outside the two ends of the mounting seat (6). A sealing gasket (12) is provided on the side surface of the valve head (11) close to the pressure reducing pipe (3). The diameter of the second end of the pressure reducing valve stem (7) close to the valve head (11) is larger than the diameter of the end away from the valve head (11). The movement of the valve stem changes the size of the gap (62) between the second end of the pressure reducing valve stem (7) and the end surface of the mounting seat (6).

5. The multifunctional combination valve according to claim 1, characterized in that: The control pipe (2) is arranged perpendicular to the main body of the valve body (1), and the control pipe (2) and the pressure reducing pipe (3) are arranged perpendicularly. An inlet (2a) and an outlet (2b) are provided on the control pipe (2). The inlet (2a) of the control pipe (2) is connected to the pressure reducing pipe (3), and the outlet (2b) of the control pipe (2) is connected to the flow diverter (5). The inlet (2a) and the outlet (2b) of the control pipe (2) are staggered in the axial direction of the control pipe (2). A water replenishment component is installed at the end where the inlet (2a) of the control pipe (2) is located, and the end where the outlet (2b) of the control pipe (2) is located is open to form a drain outlet.

6. The multifunctional combination valve according to claim 5, characterized in that: The water replenishment assembly includes a water replenishment valve stem (13), one end of the water replenishment valve stem (13) passes through the upper end of the control tube (2) and is connected to the push switch (14), and the other end of the valve stem is connected to the water replenishment spring (15). The water replenishment spring (15) applies force to the water replenishment valve stem (13) so that the water replenishment valve stem (13) is located at the upper limit position. Pressing the push switch (14) downward will drive the valve stem to move downward to connect the inlet (2a) and the water outlet (32); a valve core is provided on the water replenishment valve stem (13), and the valve core is in the shape of a stepped frustum and includes an upper frustum (16a) and a lower frustum (16b). The control tube (2) is provided with an inner cylinder wall corresponding to the valve core, and the inner cylinder wall is provided. The wall comprises an upper cylinder wall (17a) and a lower cylinder wall (17b); the outer surface of the upper cylindrical table (16a) is provided with at least two layers of sealing layers, and the upper cylindrical table (16a) is sealedly connected to the upper cylinder wall (17a) through the sealing layers; pressing the push switch (14) downward pushes the valve core to move downward; when the upper cylindrical table (16a) of the valve core completely leaves the upper cylinder wall (17a), the inlet (2a) and the outlet (2b) are connected, and the lower cylindrical table (16b) enters the lower cylinder wall (17b) and is sealedly connected to the lower cylinder wall (17b); when the water supply valve stem (13) is located at the upper limit position, the upper cylindrical table (16a) is located at the lower position of the inlet (2a).

7. The multifunctional combination valve according to claim 1, characterized in that: A drainage joint (18) is installed in the drainage device (5), and the drainage joint (18) is a trumpet-shaped structure. The end of the drainage joint (18) close to the valve body (1) is marked as the front end, and the end of the drainage joint (18) away from the valve body (1) is marked as the rear end. The diameter of the drainage joint (18) gradually decreases from the front end to the rear end. The front end of the drainage joint (18) is sealedly connected to the inner wall surface of the drainage device (5), and there is a gap between the middle part of the drainage joint (18) and the inner wall surface of the drainage device (5).

8. The multifunctional combination valve according to claim 7, characterized in that: The drain device (5) is provided with a drainage port (51) on its surface. The drainage port (51) is sealed by a detachably mounted plug (19). The drainage port (51) is correspondingly arranged on the periphery of the drainage joint (18). The medium introduced through the drainage port (51) reaches the periphery of the drainage joint (18), and is driven out of the drain device (5) by the medium passing through the drainage joint (18).

9. The multifunctional combination valve according to claim 7, characterized in that: A drainage tube (20) is installed in the drainage device (5). The drainage tube (20) is installed on the rear side of the drainage joint (18), and there is a distance between the drainage tube (20) and the drainage joint (18). The inner diameter of the drainage tube (20) is larger than the inner diameter of the rear end of the drainage joint (18), and the inner diameter of the drainage tube (20) is smaller than the inner diameter of the front end of the drainage joint (18); the drainage tube (20) is threadedly connected to the inner wall of the drainage device (5).

10. The multifunctional combination valve according to claim 8, characterized in that: The outer peripheral surface of the water inlet end of the diverter (5) is provided with a sealing ring and a clamping groove (21) in sequence. The water inlet end of the diverter (5) is inserted into the water outlet (32) end of the valve body (1). The surface of the water outlet end of the valve body (1) is provided with a clamping hole (23) corresponding to the clamping groove (21). A retaining spring (22) is installed at the clamping hole (23) of the valve body (1). The retaining spring (22) passes through the clamping hole (23) and is embedded in the clamping groove (21). The diverter (5) is a bent pipe structure as a whole. The diverter (5) includes a bent section. The diversion joint (18) and the diversion tube (20) are located in front of the bent section. The medium passes through the diversion joint (18), the diversion tube (20), and the bent section of the diverter (5) in sequence.

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