Three-valve group with pressurizing function

Abstract

The three-valve set with the pressurizing function mainly comprises a valve body, a pressurizing adjusting opening, a first adjusting opening and a second adjusting opening are formed in the valve body, an adjusting rotary handle is in threaded connection with the interior of the pressurizing adjusting opening, and a first rotary handle and a second rotary handle are in threaded connection with the interior of the first adjusting opening and the interior of the second adjusting opening correspondingly; a cavity is formed in the valve body to form a valve cavity, a pressure increasing valve port communicated with the valve cavity is formed in the bottom of the valve body, an adjusting assembly is arranged in the valve cavity, and a pressure increasing adjusting port, the pressure increasing valve port, a first adjusting port and a second adjusting port are formed in the upper narrow face, the lower narrow face, the left narrow face and the right narrow face of the valve body respectively. And a first valve port and a second valve port are formed in one wide surface of the valve body in a coplanar manner. The pressure-boosting valve has the technical effect of boosting water flow.

Description

Technical Field

[0001] The present application relates to the technical field of valve devices, and in particular to a three-valve group with a pressurizing function. Background Art

[0002] As a common fluid control device, three-way valves are widely used in industrial production, domestic water supply, and other fields. Traditional three-way valves are primarily used to divert and merge fluids, regulating the flow between different pipelines to meet specific needs. These traditional three-way valves have a simple and practical design, effectively completing basic fluid control tasks and significantly improving system reliability and efficiency.

[0003] In practical applications, to achieve more complex fluid control requirements, various methods are often used to enhance the functionality of three-way valves. For example, system pressure can be increased by adding external pump stations, or automated equipment such as solenoid valves and pneumatic valves can be used for precise pressure control. These methods often require additional equipment, increasing system complexity and cost. Therefore, how to ensure that three-way valves have efficient pressure-boosting capabilities without relying on external equipment has become a pressing technical challenge. Summary of the Invention

[0004] In order to solve the above problems, the present application provides a three-valve group with a boosting function.

[0005] The present application provides a three-valve group with a boosting function, which adopts the following technical solutions: A three-valve group with a boosting function includes a valve body, which is in the shape of a rectangular parallelepiped, and the top surface and two opposite side surfaces of the valve body are respectively provided with a boosting regulating port, a first regulating port and a second regulating port, the boosting regulating port is threadedly connected with an regulating handle, the first regulating port and the second regulating port are respectively threadedly connected with a first handle and a second handle, a cavity is provided in the valve body to form a valve cavity, a boosting valve port connected to the valve cavity is provided at the bottom of the valve body, and an adjusting component is provided in the valve cavity, the boosting regulating port, the boosting valve port, the first regulating port and the second regulating port are respectively provided on the four narrow surfaces of the valve body, namely, the upper, lower, left and right surfaces, and the first valve port and the second valve port are coplanarly provided on one of the wide surfaces of the valve body.

[0006] By adopting this technical solution, the three-valve group not only has traditional fluid regulation functions but also adds a boost function. This effectively increases system pressure to meet the needs of different application scenarios. Furthermore, the provision of the first and second regulating ports allows users to finely adjust the pressure and flow of each fluid channel with a single knob, enhancing the system's flexibility and controllability.

[0007] Preferably, the valve chamber consists of an active chamber, a boost chamber and a confluence chamber arranged from top to bottom, a partition flange is provided between the active chamber and the boost regulating port, a circular through hole is opened in the middle of the partition flange to form a sealing channel, the sealing channel connects the active chamber with the boost regulating port, a circular guide ring is fixedly provided along the periphery of the sealing channel, the guide ring is integrally provided with the partition flange, and the guide ring is fixedly provided on the top of the partition flange.

[0008] By adopting this technical solution, the design of the separating flange and guide ring ensures a more stable and reliable connection between the boost regulating port and the active chamber, effectively preventing fluid leakage. Furthermore, the sealed channel formed by the circular through-hole ensures smooth movement of the pusher, improving the valve's response speed and adjustment accuracy. The presence of the guide ring also reduces displacement of the pusher during movement, ensuring its stability and service life.

[0009] Preferably, the adjustment assembly includes a pusher with a T-shaped cross-section, which is movably inserted in the sealing channel, the top of the pusher is placed in the boost adjustment port and abuts against the adjustment handle, and the bottom of the pusher is integrally provided with a threaded mounting portion.

[0010] By adopting this technical solution, the T-shaped design of the pusher enables stable movement within the sealed channel, ensuring accurate and stable positioning during adjustment. Furthermore, the top of the pusher abuts the adjustment knob, effectively transmitting rotational force and achieving precise pressure adjustment. The threaded mounting portion at the bottom of the pusher facilitates connection to other components, improving the assembly convenience and reliability of the entire adjustment assembly.

[0011] Preferably, the regulating assembly also includes a movable part arranged in the movable chamber and a shut-off valve core for separating the movable chamber and the confluence chamber, the movable part includes a cap portion and a connecting portion arranged from top to bottom, the cap portion is cylindrical and has a screw hole on its top, the top end of the cap portion is provided with an inclined surface to form an abutting inclined surface, the top wall of the movable chamber is provided with a limiting inclined surface matching the abutting inclined surface, the bottom of the connecting portion is integrally provided with a ring-shaped sealing synapse, a spring diaphragm is fixedly provided on the outside of the connecting portion, the shut-off valve core includes an integrally provided extension portion and a shut-off portion, and the extension portion, the spring diaphragm and the connecting portion together constitute a boosting chamber.

[0012] By adopting the above technical solution, the three-valve group can achieve a boosting effect while maintaining the original regulating function. The design of the cap and connecting part of the movable part enables the pressure to be effectively transmitted to the interior of the movable chamber, thereby driving the movement of the entire regulating assembly.

[0013] The boost chamber can effectively concentrate the pressure of the liquid, thereby achieving a boosting effect on the spring diaphragm, causing the spring diaphragm to deform under pressure.

[0014] Preferably, the cut-off portion is arranged in a ring shape downward along the extension portion, and a flow hole is formed in the middle of the cut-off portion. The adjusting assembly also includes an intermediate cut-off member and a bottom cut-off member. The bottom of the movable member and the top of the bottom cut-off member are respectively provided with a bottom plug-in hole and a top plug-in interface for plugging in the intermediate cut-off member. The top and bottom of the intermediate cut-off member are respectively provided with a top plug-in boss and a bottom plug-in boss. A buffer spring is provided between the top plug-in boss and the bottom plug-in hole.

[0015] By adopting the above-mentioned technical solution, the three-valve assembly can achieve effective pressure regulation and boosting when fluid passes through it. The cutoff portion is arranged in an annular shape along the extension downward, with a flow hole formed in the center, allowing fluid to pass smoothly while reducing flow resistance. The coordinated design of the middle and bottom cutoff pieces, as well as the plug-in structure between them, ensures precise control of the fluid path and improves the stability and reliability of the system. The design of the top and bottom plug-in bosses, combined with the action of the buffer spring, effectively reduces the vibration and noise caused by fluid impact, thereby improving the service life and performance of the entire device.

[0016] Preferably, the middle portion of the intermediate shut-off member is narrowed to form a guide portion, a slope is provided below the guide portion to form a shut-off slope, and both the top and the bottom of the cut-off portion are provided with slopes to form a cut-off slope.

[0017] By adopting this technical solution, the narrowing design of the middle section of the flow guide effectively guides the flow direction, reduces turbulence and resistance, and improves flow efficiency. The cutoff bevel design ensures a closer and smoother contact between the intermediate cutoff member and the cutoff section, enhancing sealing performance and preventing leakage. The bevel design at the top and bottom of the cutoff section further optimizes the fluid path, ensuring stable and reliable cutoff and opening operations under different pressure conditions, thereby improving system reliability and safety.

[0018] Preferably, the bottom shut-off member includes an arc-shaped abutting shell, an abutting boss is provided on one side of the confluence chamber close to the boost valve port corresponding to the abutting shell, and a return spring is further provided between the bottom shut-off member and the boost valve port.

[0019] By adopting this technical solution, the curved abutment housing of the bottom shutoff member cooperates with the abutment shoulder within the confluence chamber, effectively sealing the bottom shutoff member during the pressurization process and preventing liquid leakage. Simultaneously, the reset spring provides the necessary opening and closing control for the boost valve port.

[0020] Preferably, control pistons are fixedly provided on one end of the first rotary handle and the second rotary handle facing the valve cavity, and sealing rings are fixedly installed at intervals along the length direction of the control pistons.

[0021] By adopting this technical solution, control pistons are fixedly mounted on the ends of the first and second rotary handles facing the valve cavity, effectively achieving precise control of the pressure within the valve cavity. Furthermore, sealing rings are fixedly mounted at intervals along the length of the control pistons, significantly improving the sealing performance of the device and preventing medium leakage.

[0022] Preferably, the first regulating port and the second regulating port respectively include a first threaded channel and a second threaded channel connected to the outside of the valve body, and the first regulating port and the second regulating port also respectively include a first control valve path and a second control valve path, and the first control valve path and the second control valve path respectively connect the first threaded channel and the second threaded channel with the valve cavity.

[0023] By adopting the above technical solution, effective communication between the first and second regulating ports and the valve cavity is achieved. This structural design not only simplifies the operation process of the valve, but also enhances the flexibility and adaptability of the system, enabling it to maintain good performance under different working conditions.

[0024] Preferably, the first valve port and the second valve port both include a reserved threaded hole and a narrow channel connected to the reserved threaded hole, the inner wall of the boost valve port is provided with a reserved threaded hole, and the two narrow channels are respectively connected to the first control valve channel and the second control valve channel.

[0025] By adopting this technical solution, both the first and second valve ports include reserved threaded holes and narrowed channels connected to these holes. This design allows for more stable connection to external piping, improving the system's sealing and reliability. Furthermore, the inner wall of the boost valve port is provided with a reserved threaded hole, further strengthening the connection between the boost valve port and external equipment and ensuring safe operation of the valve under high-pressure conditions. The two narrowed channels, respectively connected to the first and second control valve channels, effectively reduce pressure loss when fluid enters the valve chamber, thereby improving the efficiency and stability of the entire three-valve group.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting the boost regulating port, boost valve port and corresponding regulating components inside the valve body, the built-in boosting function of the three-way valve is realized, without the support of external pump station or automation equipment, simplifying the system structure and reducing costs; 2. The regulating knob in the boost regulating port cooperates with the pusher in the valve cavity to accurately control the boost process, ensure that the fluid pressure is stable and controllable, and improve the reliability and accuracy of the system; the first regulating port and the second regulating port are respectively provided with a first rotary handle and a second rotary handle, and the positions of the two rotary handles can be adjusted to achieve independent control of the flow of different pipelines, further enhancing the functional diversity of the three-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a stereoscopic view of an embodiment of the present application; Figure 2 It is a cross-sectional view showing the structure of the narrow channel; Figure 3 This is a cross-sectional view when the boost valve port is completely closed; Figure 4 It is a partial cross-sectional view when the boost valve port is completely closed; Figure 5 This is a partial cross-sectional view of the boost valve port when it is fully opened; Figure 6 This is a schematic diagram of the natural state of the spring diaphragm when there is no pressure in the boost chamber; Figure 7 It is a status view of the regulating components in the boost state.

[0028] Explanation of reference numerals: 1. first regulating port; 11. first rotary handle; 111. control piston; 112. sealing ring; 12. first control valve channel; 13. first threaded channel; 2. second regulating port; 21. second rotary handle; 22. second control valve channel; 23. second threaded channel; 3. boost regulating port; 31. regulating rotary handle; 41. pushing member; 411. threaded mounting portion; 42. movable member; 421. cap portion; 422. abutting inclined surface; 423. connecting portion; 424. sealing synapse; 425. bottom plug-in hole; 43. buffer spring; 44. spring diaphragm; 45. intermediate shut-off member; 451. plug-in boss; 452. Flow guide; 453. Cut-off slope; 46. Bottom cut-off member; 461. Top plug-in interface; 462. Abutment shell; 47. Return spring; 5. Valve body; 51. Valve cavity; 511. Active cavity; 512. Limiting slope; 513. Pressurization chamber; 515. Converging cavity; 516. Abutment boss; 52. Separating flange; 521. Guide ring; 522. Sealing channel; 53. Stop valve core; 531. Extension portion; 532. Stop portion; 533. Flow hole; 534. Cut-off slope; 54. First valve port; 541. Reserved threaded hole; 55. Second valve port; 551. Narrowing channel; 56. Pressurization valve port. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-7 This application is described in further detail.

[0030] In the description of the invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the invention.

[0031] The embodiment of the present application discloses a three-valve group with a boosting function, including a valve body 5, which is in the shape of a rectangular parallelepiped, and a boosting regulating port 3, a first regulating port 1, and a second regulating port 2 are respectively provided on the top surface and two opposite side surfaces of the valve body 5. A cavity is provided in the valve body 5 to form a valve cavity 51, and a boosting valve port 56 connected to the valve cavity 51 is provided at the bottom of the valve body 5. An adjusting component is provided in the valve cavity 51, and the boosting regulating port 3, the boosting valve port 56, the first regulating port 1, and the second regulating port 2 are respectively provided on the four narrow surfaces of the valve body 5, namely, the upper, lower, left, and right surfaces, and a first valve port 54 and a second valve port 55 are provided on the same plane on one of the wide surfaces of the valve body 5. Through the above-mentioned arrangement, various openings can be reasonably distributed on the valve body 5, and the first valve port 54 and the second valve port 55 are provided on a wide surface of the valve body 5, which can be conveniently connected to an external pipeline. An adjustment knob 31 is threadedly connected to the boost adjustment port 3. A first knob 11 and a second knob 21 are threadedly connected to the first and second adjustment ports 1 and 2, respectively. The first and second adjustment ports 1 and 2 include first and second threaded passages 13 and 23, respectively, which communicate with the exterior of the valve body 5. They also include first and second control valve passages 12 and 22, respectively, connecting the first and second threaded passages 13 and 23 to the valve chamber 51. The first and second control valve passages 12 and 22 connect the first and second threaded passages 13 and 23, respectively, to the valve chamber 51. The first and second knobs 11 and 21 are threadedly connected to the first and second threaded passages 13 and 23, respectively, allowing the operator to control the opening and closing of the valve ports by rotating the knobs.

[0032] Both the first and second valve ports 54, 55 include a reserved threaded hole 541 and a narrowed channel 551 communicating with the reserved threaded hole 541. The reserved threaded hole 541 is defined on the inner wall of the boost valve port 56. The two narrowed channels 551 communicate with the first and second control valve paths 12, 22, respectively. The diameters of the first and second control valve paths 12, 22 are smaller than those of the first and second threaded channels 13, 23. The diameters of the first and second control valve paths 12, 22 match the narrowed channels 551, ensuring stable water pressure when water flows into the first and second control valve paths 12, 22. A control piston 111 is fixedly mounted on each end of the first and second rotary handles 11, 21, facing the valve chamber 51. Sealing rings 112 are fixedly mounted at intervals along the length of the control pistons 111. The control piston 111 is installed in the first control valve channel 12 and the second control valve channel 22 and can slide relatively along the first control valve channel 12 and the second control valve channel 22. Sealing rings 112 are provided at both ends of the control piston 111, and the two sealing rings 112 are arranged at intervals, and the interval distance is greater than the narrow channel 551. When the control piston 111 moves and the sealing rings 112 are respectively placed at both ends of the narrow channel 551, the water flow coming out of the narrow channel 551 is intercepted, thereby forming a technical effect of closing the first valve port 54 and the second valve port 55, and the opening and closing of the two valve ports can be independently controlled by the first rotary handle 11 and the second rotary handle 21, thereby changing the flow path of the water flow.

[0033] The valve chamber 51 consists of a movable chamber 511, a boost chamber 513, and a confluence chamber 515, arranged from top to bottom. A separating flange 52 is provided between the movable chamber 511 and the boost pressure regulating port 3. This separating flange 52 separates the movable chamber 511 from the boost pressure regulating port 3 and acts as a seal, preventing water within the valve chamber 51 from flowing into the boost pressure regulating port 3. A circular through-hole is provided in the center of the separating flange 52, forming a sealing passage 522 that connects the movable chamber 511 with the boost pressure regulating port 3. A circular guide ring 521 is fixedly mounted along the periphery of the sealing passage 522. The guide ring 521 is integrally formed with the separating flange 52 and is fixedly mounted on the top of the separating flange 52. The adjustment assembly includes a pusher 41 with a T-shaped cross-section. This pusher 41 is movably inserted into the sealing channel 522. The top of the pusher 41 is positioned within the boost adjustment port 3 and abuts the adjustment knob 31. The bottom of the pusher 41 is integrally provided with a threaded mounting portion 411. The sealing channel 522 and the insertion point of the pusher 41 fit tightly together, achieving a waterproof effect. When the adjustment knob 31 is fully advanced toward the valve body 5, the T-shaped pusher 41 abuts against the guide ring 521, thereby limiting the position of the adjustment knob 31. This also enhances the sealing effect of the movable cavity 511.

[0034] The regulating assembly also includes a movable part 42 arranged in the movable chamber 511 and a stop valve core 53 for separating the movable chamber 511 and the confluence chamber 515. The movable part 42 includes a cap portion 421 and a connecting portion 423 arranged from top to bottom. The cap portion 421 is cylindrical and has a screw hole on its top. The threaded mounting portion 411 is threadedly mounted in the screw hole, so that the pushing member 41 can drive the movable part 42 to move synchronously.

[0035] The top of the cap portion 421 is provided with an inclined surface forming an abutting inclined surface 422. The top wall of the movable chamber 511 is provided with a limiting inclined surface 512 that matches the abutting inclined surface 422. When the movable member 42 is pulled upward to its maximum extent by the pusher 41, the abutting inclined surface 422 and the limiting inclined surface 512 can abut. The bottom of the connecting portion 423 is integrally provided with an annular sealing contact 424. The outer side of the connecting portion 423 is fixedly provided with a spring diaphragm 44. The spring diaphragm 44 has an arc-shaped cross-section. In the initial state, the spring diaphragm 44 bends toward the bottom of the movable chamber 511 under the action of elastic force. The shut-off valve core 53 includes an extension portion 531 and a shut-off portion 532. The extension portion 531, the spring diaphragm 44, and the connecting portion 423 together form the boost chamber 513. When the movable member 42 is in its highest position, lowest position, and intermediate position, the spring diaphragm 44 can be stretched into three different states. When the movable member 42 is in its highest position, i.e., when the contact bevel 422 and the limiting bevel 512 abut, the spring diaphragm 44 bends toward the bottom of the movable cavity 511, and the curvature of the bend is smaller than that in the natural state. The spring diaphragm 44 stretches along the inclined direction of the limiting bevel 512, reducing the bending amplitude of the spring diaphragm 44 and maximizing the distance between the sealing contact 424 and the extension 531. When the movable member 42 is in its intermediate position, the spring diaphragm 44 is in its initial natural state, and the distance between the sealing contact 424 and the extension 531 is reduced. When the movable member 42 is in its lowest position, i.e., when the sealing contact 424 abuts the extension 531, the spring diaphragm 44 bends to its maximum extent, forming a closed cavity in the boost chamber 513.

[0036] The cutoff portion 532 is annularly arranged downward along the extension portion 531, and a flow hole 533 is formed in the middle of the cutoff portion 532. The flow hole 533 is used for liquid to pass through and enable the liquid to enter the boost chamber 513. The adjustment assembly also includes an intermediate cutoff member 45 and a bottom cutoff member 46. The bottom cutoff member 46 and the movable member 42 are both provided with a plug-in hole for the intermediate cutoff member 45. The adjustment assembly also includes an intermediate cutoff member 45 and a bottom cutoff member 46. The bottom of the movable member 42 and the top of the bottom cutoff member 46 are respectively provided with a bottom plug-in hole 425 and a top plug-in hole 461 for plugging into the intermediate cutoff member 45. The top and bottom of the intermediate cutoff member 45 are respectively provided with a top plug-in boss 451 and a bottom plug-in boss 451. A buffer spring 43 is provided between the top plug-in boss 451 and the bottom plug-in hole 425. The middle portion of the intermediate shutoff member 45 is narrowed to form a guide portion 452. This guide portion 452 is positioned in the middle of the flow hole 533 and guides the water flowing into the boost chamber 513. A sloped surface is provided below the guide portion 452, forming a flow-cutting slope 453. Both the top and bottom of the shutoff portion 532 are provided with sloped surfaces, forming cutoff slopes 534. The cutoff slope 534 at the top of the cutoff portion 532 primarily guides the water flow, reducing the sudden impact of the water flow on the boost chamber 513 and allowing the water flow to preferentially impact the movable member 42, thereby unloading the water flow. The cutoff slope 534 at the bottom of the cutoff portion 532 matches the cutoff slope 453, and when the cutoff slope 534 and cutoff slope 453 abut, they can cut off the water flow into the boost chamber 513.

[0037] The bottom shutoff member 46 includes an arcuate abutment housing 462. An abutment shoulder 516 is provided on one side of the confluence chamber 515, corresponding to the abutment housing 462 and located near the boost valve port 56. A return spring 47 is also provided between the bottom shutoff member 46 and the boost valve port 56. The force of the return spring 47 is configured to be significantly greater than the force of the buffer spring 43. This spring 47 maintains a tight contact between the intermediate shutoff member 45 and the movable member 42, preventing the intermediate shutoff member 45 from falling off.

[0038] The implementation principle of the embodiment of the present application is: by rotating the first handle 11 and the second handle 21, the first valve port 54 and the second valve port 55 can be adjusted separately to control the inflow or outflow of the first valve port 54 and the second valve port 55. The adjusting knob 31 is rotated to make the abutting inclined surface 422 abut against the limiting inclined surface 512, the pressure of the return spring 47 is at the lowest and the bottom shut-off member 46 is lifted to the maximum height, and the water flows from the first valve port 54 and the second valve port 55 can flow out through the boosting valve port 56. At this time, the spring diaphragm 44 abuts and stretches against the limiting inclined surface 512, and the water flow entering the boosting chamber 513 will not cause the spring diaphragm 44 to undergo elastic deformation; the adjusting knob 31 is rotated to make the movable part 42 located in the middle position of the movable cavity 511, and the water flow entering the valve cavity 51 through the first valve port 54 or the second valve port 55 will pass through the flow hole 533 and reach the boosting chamber 513. The water flow entering the boosting chamber 513 will instantly increase the pressure in the boosting chamber 513, and through the pressure, the spring originally bent toward the boosting chamber 513 will be bent. The diaphragm 44 is pushed out, causing the spring diaphragm 44 to bend in the direction away from the boost chamber 513. During this process, the spring diaphragm 44 will abut against the limiting slope 512 and exert a downward force on the movable part 42, thereby reducing the distance between the abutment shell 462 and the abutment boss 516. When the flow rate of water entering the first valve port 54 or the second valve port 55 remains unchanged, the water pressure of the water flow coming out of the boost valve port 56 will be increased; when the adjusting handle 31 is rotated to the bottom, the movable part 42 pushes the buffer spring 43 to be fully compressed, and presses the abutment shell 462 against the abutment boss 516, thereby closing the boost valve port 56. During this process, the sealing synapse 424 contacts the extension part 531 and prevents the water flow from entering the boost chamber 513, thereby preventing the spring diaphragm 44 from being deformed.

[0039] When the boost valve port 56 slowly opens from a closed state, since the elastic force of the buffer spring 43 is smaller than the return spring 47, the bottom shut-off member 46 will open first and release the pressure in the valve cavity 51, and then the movable member 42 will move upward. This setting can prevent the boost chamber 513 from instantaneously being overly pressurized and causing damage to the spring diaphragm 44.

[0040] By cooperating with the first valve port 54 and the second valve port 55 to adjust the knob 31 , the flow direction of water in the first valve port 54 , the second valve port 55 and the boost valve port 56 can be arbitrarily changed.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A three-valve group with a boosting function, characterized by: The valve body (5) is in the shape of a rectangular parallelepiped. The top surface and two opposite side surfaces of the valve body (5) are respectively provided with a boost regulating port (3), a first regulating port (1) and a second regulating port (2). The boost regulating port (3) is internally threadedly connected to an regulating knob (31). The first regulating port (1) and the second regulating port (2) are internally threadedly connected to a first rotary knob (11) and a second rotary knob (21). A cavity is provided in the valve body (5). A valve cavity (51) is formed, a boost valve port (56) communicating with the valve cavity (51) is provided at the bottom of the valve body (5), an adjustment component is provided in the valve cavity (51), the boost adjustment port (3), the boost valve port (56), the first adjustment port (1) and the second adjustment port (2) are respectively provided on the four narrow surfaces of the valve body (5), namely the upper, lower, left and right sides, and one of the wide surfaces of the valve body (5) is provided with the first valve port (54) and the second valve port (55) on the same plane.

2. The three-valve group with a boosting function according to claim 1, characterized in that: The valve chamber (51) is composed of an active chamber (511), a boost chamber (513) and a confluence chamber (515) arranged from top to bottom. A separation flange (52) is provided between the active chamber (511) and the boost regulating port (3). A circular through hole is provided in the middle of the separation flange (52) to form a sealing channel (522). The sealing channel (522) connects the active chamber (511) with the boost regulating port (3). A circular guide ring (521) is fixedly provided along the periphery of the sealing channel (522). The guide ring (521) is integrally provided with the separation flange (52) and is fixedly provided on the top of the separation flange (52).

3. The three-valve group with a boosting function according to claim 2, characterized in that: The adjustment assembly comprises a pusher (41) having a T-shaped cross-section, the pusher (41) being movably inserted into the sealing channel (522), the top of the pusher (41) being placed in the boost adjustment port (3) and abutting against the adjustment knob (31), and the bottom of the pusher (41) being integrally provided with a threaded mounting portion (411).

4. The three-valve group with a boosting function according to claim 2, characterized in that: The regulating assembly further comprises a movable member (42) disposed in the movable chamber (511) and a stop valve core (53) for separating the movable chamber (511) and the confluence chamber (515); the movable member (42) comprises a cap portion (421) and a connecting portion (423) disposed from top to bottom; the cap portion (421) is cylindrical and has a screw hole formed on its top; the top end of the cap portion (421) is provided with an inclined surface to form an abutting inclined surface (422); the top wall of the movable chamber (511) A limiting inclined surface (512) matching the abutting inclined surface (422) is provided, a sealing synapse (424) in the shape of a ring is integrally provided at the bottom of the connecting portion (423), a spring diaphragm (44) is fixedly provided on the outer side of the connecting portion (423), and the stop valve core (53) includes an integrally provided extension portion (531) and a stop portion (532), and the extension portion (531), the spring diaphragm (44) and the connecting portion (423) together constitute a pressurization chamber (513).

5. The three-valve group with a pressurizing function according to claim 4, characterized in that: The cut-off portion (532) is arranged in an annular shape downward along the extension portion (531), and a flow hole (533) is formed in the middle of the cut-off portion (532). The regulating assembly also includes an intermediate cut-off member (45) and a bottom cut-off member (46). The bottom of the movable member (42) and the top of the bottom cut-off member (46) are respectively provided with a bottom plug-in hole (425) and a top plug-in interface (461) for plugging the intermediate cut-off member (45). The top and bottom of the intermediate cut-off member (45) are respectively provided with a top plug-in boss (451) and a bottom plug-in boss (451). A buffer spring (43) is provided between the top plug-in boss (451) and the bottom plug-in hole (425).

6. The three-valve group with a pressurizing function according to claim 5, characterized in that: The middle portion of the intermediate flow-blocking member (45) is narrowed to form a flow-guiding portion (452), a slant is provided below the flow-guiding portion (452) to form a flow-blocking slant (453), and the top and bottom of the stop portion (532) are both provided with slant to form a stop slant (534).

7. The three-valve group with a pressurizing function according to claim 5, characterized in that: The bottom shutoff member (46) includes an arc-shaped abutting shell (462), and an abutting shoulder (516) is provided on one side of the confluence cavity (515) close to the boost valve port (56) corresponding to the abutting shell (462). A return spring (47) is also provided between the bottom shutoff member (46) and the boost valve port (56).

8. The three-valve group with a pressurizing function according to claim 1, characterized in that: A control piston (111) is fixedly provided at one end of the first rotary handle (11) and the second rotary handle (21) facing the valve chamber (51), and sealing rings (112) are fixedly installed at intervals along the length direction of the control piston (111).

9. The three-valve group with a pressurizing function according to claim 1, characterized in that: The first regulating port (1) and the second regulating port (2) respectively comprise a first threaded channel (13) and a second threaded channel (23) which are communicated with the outside of the valve body (5); the first regulating port (1) and the second regulating port (2) further respectively comprise a first control valve path (12) and a second control valve path (22); the first control valve path (12) and the second control valve path (22) respectively connect the first threaded channel (13) and the second threaded channel (23) with the valve chamber (51).

10. The three-valve group with a pressurizing function according to claim 9, characterized in that: The first valve port (54) and the second valve port (55) both include a reserved threaded hole (541) and a narrow channel (551) connected to the reserved threaded hole (541); the inner wall of the boost valve port (56) is provided with a reserved threaded hole (541); the two narrow channels (551) are respectively connected to the first control valve channel (12) and the second control valve channel (22).

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