Double-valve dynamic circulating valve

Abstract

The utility model discloses a double-valve dynamic circulating valve which comprises a shell, a main pipeline and a branch pipeline are arranged in the shell, and the two ends of the branch pipeline are communicated with the main pipeline respectively. A valve element is arranged in the main pipeline and comprises an elastic membrane and a connecting piece, and the elastic membrane is located between the two ends of the branch pipeline. The elastic membrane is of a double-valve structure and comprises a middle installation area and two valves symmetrically located on the two sides of the installation area, the installation area is connected with the inner wall of the main pipeline through a connecting piece, and in the low water pressure state, an annular fluid gap allowing fluid in the main pipeline to flow through is formed between the two valves and the connecting piece. And in a high water pressure state, the two valves are bent and deformed in the direction away from the main pipeline by taking the mounting area as the center, so that the annular fluid gap is enlarged, and the flow of the main pipeline is increased. According to the utility model, the flow can be more accurately adjusted according to the change of water pressure, and a fluid system can stably and efficiently operate under various water pressure conditions.

Description

Technical Field

[0001] This utility model relates to the field of domestic water valve technology. More specifically, this utility model relates to a dual-valve dynamic circulation valve. Background Technology

[0002] The dynamic circulation valve is designed to solve the problem that occurs when water is supplied from the main water pipe to the branch water pipe, namely, insufficient water pressure in the branch water pipe, which causes the water flow to stagnate and makes it easy for bacteria to grow.

[0003] To effectively solve this problem, the design principle of the dynamic circulation valve is to periodically adjust the opening and closing state of the valve, thereby generating a dynamic water pressure change in the branch water pipe. This change promotes continuous water circulation, ensuring water flow within the branch water pipe and thus preventing water stagnation and bacterial growth.

[0004] Currently available dynamic circulation valves often have certain design limitations, making it difficult to fully adapt to various complex water pressure conditions. Some products may leak or be damaged under high water pressure, while failing to function properly under low water pressure. Furthermore, although some dynamic circulation valves have a certain degree of regulation capability, their response speed and regulation accuracy often cannot meet actual needs when facing rapidly changing water pressure.

[0005] Therefore, designing a dynamic circulation valve that can adapt to various water pressure conditions and has high response speed and adjustment accuracy has become a technical problem that urgently needs to be solved in the field of water supply and drainage systems. Utility Model Content

[0006] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0007] To achieve these objectives and other advantages according to this utility model, a dual-valve dynamic circulation valve is provided, comprising a housing containing a main pipeline and branch pipelines, with both ends of the branch pipelines connected to the main pipeline; a valve core is provided inside the main pipeline, comprising an elastic diaphragm and a connector, the elastic diaphragm being located between the two ends of the branch pipeline; the elastic diaphragm has a dual-valve structure, comprising a central mounting area and two symmetrically located valves on both sides of the mounting area, the mounting area being connected to the inner wall of the main pipeline via the connector; under low water pressure, an annular fluid gap is formed between the two valves and the connector, allowing fluid in the main pipeline to flow through; under high water pressure, the two valves bend and deform away from the main pipeline with the mounting area as the center, thereby increasing the annular fluid gap and increasing the flow rate in the main pipeline;

[0008] The connector includes a base, a fixed seat, and a support rod. The fixed seat is snapped into the inner wall of the main pipeline, the base is snapped into the fixed seat, the support rod is snapped into the base, the installation area is fitted onto the support rod, and the edges of the two valves form an annular fluid gap with the inner wall of the fixed seat.

[0009] The support rod is axially arranged along the direction of fluid flow in the main pipeline. The end of the support rod near the water inlet is provided with a positioning post that is inserted into the positioning hole located in the middle of the installation area. The end of the positioning post is provided with a first elastic buckle. The support rod is also provided with guide posts that are adapted to guide holes located on both sides of the installation area. The other end of the support rod away from the water inlet is provided with a mounting block that is inserted into the mounting hole of the base. The mounting block is provided with a second elastic buckle.

[0010] The fixing seat is a ring structure that is snapped into the inner wall of the main pipeline and also snapped into the outer periphery of the base.

[0011] Preferably, in the dual-valve dynamic circulation valve, each valve edge is provided with an elastic reinforcing rib with a trapezoidal cross-section. The elastic reinforcing rib is integrally formed with the valve and is narrower on the side closer to the center of the valve and wider on the side farther from the center of the valve.

[0012] Preferably, in the dual-valve dynamic circulation valve, the width of the elastic reinforcing rib increases gradually from the middle of the valve to the outer edge, with a gradient change ratio of 1:1.2 to 1:1.5, and the gradient change area accounts for 60-80% of the valve length.

[0013] Preferably, in the dual-valve dynamic circulation valve, the diaphragm is made of elastic silicone material and the thickness of the diaphragm is 0.8-1.2mm; the height of the elastic reinforcing rib is 1.5-2 times the thickness of the diaphragm.

[0014] Preferably, the dual-valve dynamic circulation valve has a support rod with a stainless steel-silicone composite structure, including an inner stainless steel core rod and an outer silicone coating layer. The thickness of the silicone coating layer is 0.3-0.6 times the diameter of the core rod, and silicon carbide microparticles with a particle size of 5-20 μm are dispersed in the coating layer.

[0015] Preferably, the dual-valve dynamic circulation valve further includes a diaphragm adjustment device, which comprises:

[0016] The first adjusting rod is perpendicular to the main pipeline and extends through the outer wall of the main pipeline into the main pipeline;

[0017] The second adjusting rod has one end coaxially engaged with the first adjusting rod, and the other end passes through the side wall of the base and is provided with the first bevel gear;

[0018] A rotating rod is coaxially rotatably sleeved on a support rod. One end of the rotating rod is provided with a second bevel gear that meshes with the first bevel gear, and the other end extends toward the diaphragm.

[0019] The movable rod is coaxially threaded to the other end of the rotating rod and slidably connected to the support rod along the axial direction.

[0020] The abutment block is located at the other end of the moving rod and is made of elastic rubber or silicone.

[0021] Preferably, the dual-valve dynamic circulation valve further includes a diaphragm adjustment device, which comprises:

[0022] The drive rod has one end located outside the housing and the other end sealed and rotates through the side wall of the housing to extend into the housing.

[0023] The worm gear mechanism has a worm that is sealed and rotates through the base and is coaxially engaged with the other end of the drive rod, and the worm gear is coaxially fixedly sleeved on the support rod.

[0024] The abutment block is made of elastic silicone. It is connected to the output end of the worm gear mechanism via a threaded sleeve and is located on the side of the elastic diaphragm away from the water inlet. When the drive rod rotates, the worm gear mechanism pushes the abutment block to move axially, thereby providing elastic compensation for the elastic diaphragm.

[0025] This utility model has at least the following beneficial effects:

[0026] This invention relates to a dual-valve dynamic circulation valve. The elastic diaphragm itself possesses excellent elasticity and flexibility, enabling it to respond quickly and directly to changes in water pressure. When the water pressure changes, the diaphragm valve can rapidly bend, altering the size of the annular fluid gap. Unlike piston-and-spring structures, this eliminates the need for complex transmission through multiple components, significantly shortening the response time. Furthermore, its simple structure, devoid of complex mechanical transmission components, reduces flow regulation errors caused by component wear and jamming. This allows for more precise flow regulation based on water pressure changes, ensuring stable and efficient operation of the fluid system under various water pressure conditions.

[0027] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the dual-valve dynamic circulation valve under low water pressure in one of the technical solutions of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the dual-valve dynamic circulation valve described in another technical solution of this utility model under high water pressure.

[0030] Figure 3 This is an exploded view of the valve core in another technical solution of this utility model;

[0031] Figure 4 This is a schematic diagram of the valve core structure in another technical solution of this utility model;

[0032] Figure 5 This is a schematic diagram of the internal structure of the valve core under low water pressure in another technical solution of this utility model;

[0033] Figure 6 This is a schematic diagram of the internal structure of the valve core under high water pressure in another technical solution of this utility model;

[0034] Figure 7 This is a schematic diagram of the diaphragm structure in another technical solution of this utility model;

[0035] Figure 8 This is a schematic diagram of the support column structure in another technical solution of this utility model;

[0036] Figure 9 This is a schematic diagram of the diaphragm adjustment device in another technical solution of the present invention, under low water pressure conditions, when it is not activated;

[0037] Figure 10 This is a schematic diagram of the diaphragm adjustment device in another technical solution of the present invention, under high water pressure conditions, when it is not activated;

[0038] Figure 11 This is a schematic diagram of the diaphragm adjustment device being activated under low water pressure in another technical solution of this utility model;

[0039] Figure 12 This is a schematic diagram of the diaphragm adjustment device being activated under high water pressure in another technical solution of this utility model;

[0040] Figure 13 This is a schematic diagram of the diaphragm adjustment device II starting under low water pressure in another technical solution of this utility model;

[0041] Figure 14 This is a schematic diagram of the diaphragm adjustment device II being activated under high water pressure in another technical solution of this utility model.

[0042] Explanation of reference numerals in the attached drawings: 1-Main pipeline; 21-Branch pipeline inlet; 22-Branch pipeline outlet; 3-Diaphragm; 31-Positioning hole; 32-Guide hole; 41-Support rod; 42-Positioning column; 43-Guide column; 44-Positioning block; 45-Annular fluid gap; 51-Base; 52-Fixing seat; 521-Stop bar; 53-Sealing ring; 6-Abutting block; 61-First adjusting rod; 62-Second adjusting rod; 63-First bevel gear; 64-Rotating rod; 65-Second bevel gear; 66-Moving rod; 67-Diagonal brace; 71-Worm gear; 72-Worm wheel; 73-Threaded rod; 74-Sleeve. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0044] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0045] It should be noted that, unless otherwise specified, the experimental methods described in the following implementation plan are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified.

[0046] In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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.

[0047] like Figures 1-14As shown, this utility model provides a dual-valve dynamic circulation valve, which includes a housing containing a main pipeline 1 and branch pipelines. The two ends of the branch pipelines are respectively connected to the main pipeline 1. A valve core is provided inside the main pipeline 1, which includes an elastic diaphragm 3 and a connector. The elastic diaphragm 3 is located between the two ends of the branch pipeline, specifically between the branch pipeline inlet 21 and the branch pipeline outlet 22. The elastic diaphragm 3 has a dual-valve structure, including a central mounting area and two symmetrically located valves on either side of the mounting area. The mounting area is connected to the inner wall of the main pipeline 1 via the connector. Under low water pressure, the two valves and the connector form a space between them, allowing water to flow through the main pipeline. The annular fluid gap 45 through which the fluid flows can adapt to the normal flow rate requirements of the fluid under low water pressure, so that the fluid in the main pipeline 1 can flow through this point smoothly and continuously. When the water pressure is high, the two valves bend and deform away from the main pipeline 1 with the installation area as the center, so that the annular fluid gap 45 increases and the flow rate of the main pipeline 1 increases. When the water pressure rises and enters a high water pressure state, the two valves bend away from the inlet of the main pipeline 1 with the installation area as the center, so that the annular fluid gap 45 can be increased in time, thereby increasing the flow rate of the main pipeline 1 to meet the flow rate requirements under high water pressure.

[0048] The connector includes a base 51, a fixed seat 52, and a support rod 41. The fixed seat 52 is snapped into the inner wall of the main pipeline 1. The base 51 is fitted inside the fixed seat 52. The support rod 41 is snapped into the base 51. The installation area is fitted onto the support rod 41. The edges of the two valves form an annular fluid gap 45 with the inner wall of the fixed seat 52.

[0049] The support rod 41 is axially arranged along the fluid flow direction of the main pipeline 1. The end of the support rod 41 near the water inlet is provided with a positioning post 42 that is inserted into the positioning hole 31 located in the middle of the installation area. The end of the positioning post 42 is provided with an elastic first buckle. The support rod 41 is also provided with a guide post 43 that is adapted to the guide holes 32 located on both sides of the installation area. The other end of the support rod 41 away from the water inlet is provided with a mounting block 44 that is inserted into the mounting hole of the base 51. The mounting block 44 is provided with an elastic second buckle.

[0050] The fixing seat 52 has a ring structure. The outer ring is snapped into the inner wall of the main pipeline 1, and the outer circumference of the base 51 at one end of the inner ring is snapped into it. The other end of the fixing seat 52 is fitted with a sealing ring 53.

[0051] like Figures 3-4 As shown, the valve core is being assembled (according to...) Figure 3When assembling the components from left to right, first insert the positioning pin through the positioning hole, and then insert the guide pin into the guide hole (which serves both as a guide and to limit the diaphragm, preventing it from rotating). Place the diaphragm onto one end of the support rod. The head of the positioning pin has a spring-loaded first buckle that can be squeezed through the positioning hole. After insertion, the first buckle resets, connecting the diaphragm to one end of the support rod. Next, the other end of the support rod is engaged with the base by fitting the mounting block with the mounting hole (located at one end of the base). Then, the fixing seat is placed on the base and engaged with the other end of the base, with the diaphragm inside the fixing seat. Finally, the sealing ring is placed on the other end of the fixing seat, completing the assembly of the entire valve core. The assembled valve core is then installed in the main pipeline using a snap-fit ​​method. All components are made of high-quality materials with excellent corrosion resistance, maintaining good performance even under harsh environments such as high water pressure and strong corrosion, ensuring the efficient operation and long-term reliability of the dual-valve dynamic circulation valve.

[0052] In the above technical solution, this utility model provides a dual-valve dynamic circulation valve. Compared with the piston-spring structure commonly used in the prior art, this utility model has significant advantages. In the existing piston-spring structure, when faced with changes in water pressure, the piston needs to reciprocate under the action of the spring. This process involves the coordinated operation of multiple components, making the structure relatively complex. Moreover, due to the friction between the piston and the inner wall of the pipe, the spring also needs a certain amount of time to complete its extension and contraction, resulting in a slow response speed to changes in water pressure and making it difficult to achieve precise and rapid flow regulation.

[0053] This invention relates to a dual-valve dynamic circulation valve. The elastic diaphragm 3 possesses excellent elasticity and flexibility, enabling it to respond quickly to changes in water pressure. When the water pressure changes, the diaphragm valve can rapidly bend, altering the size of the annular fluid gap 45. Unlike a piston-and-spring structure, this eliminates the need for complex transmission through multiple components, significantly shortening the response time. Furthermore, its simple structure, devoid of complex mechanical transmission components, reduces flow regulation errors caused by component wear and jamming. This allows for more precise flow regulation based on water pressure changes, ensuring stable and efficient operation of the fluid system under various water pressure conditions.

[0054] In another technical solution, the dual-valve dynamic circulation valve has an elastic reinforcing rib with a trapezoidal cross-section on the edge of each valve. The elastic reinforcing rib is integrally formed with the valve and is narrower on the side closer to the center of the valve and wider on the side farther from the center of the valve.

[0055] In another technical solution, the width of the elastic reinforcing rib of the dual-valve dynamic circulation valve gradually increases from the middle of the valve to the outer edge, with a gradient change ratio of 1:1.2 to 1:1.5, and the gradient change area accounts for 60-80% of the valve length.

[0056] The elastic reinforcing rib is integrally molded with the valve, avoiding weak points and enhancing the overall structural strength. The rib is narrower near the center of the valve and wider further away. During fluid flow, the valve is subjected to pressure impacts from different directions, especially at the edges. The wider outer side (away from the center) increases the stress-bearing area, dispersing the impact force of the fluid on the valve edges and preventing tearing and damage. The narrower inner side (near the center) avoids excessively increasing the valve's weight and stiffness while providing some support to the center, ensuring flexible deformation under changing water pressure and enabling precise flow regulation. Simultaneously, the trapezoidal reinforcing rib ensures even stress distribution on the valve, preventing stress concentration, improving valve fatigue life, and guaranteeing long-term stable operation of the dual-valve dynamic circulation valve.

[0057] In another technical solution, the dual-valve dynamic circulation valve uses an elastic diaphragm 3 made of elastic silicone material with a thickness of 0.8-1.2 mm. The height of the elastic reinforcing rib is 1.5-2 times the thickness of the diaphragm 3. The diaphragm 3 thickness is controlled at 0.8-1.2 mm to ensure sufficient flexibility for flexible deformation with water pressure while also possessing sufficient strength to resist fluid impact. The 1.5-2 times height of the elastic reinforcing rib effectively enhances the edge strength of the valve, playing a crucial role in dispersing fluid impact. This height-adapted design to the diaphragm 3 thickness ensures that the overall structure maintains long-term reliable operation while achieving flow regulation.

[0058] In another technical solution, the dual-valve dynamic circulation valve has a support rod 41 that is a stainless steel-silicone composite structure, including an inner stainless steel core rod and an outer silicone coating layer. The thickness of the silicone coating layer is 0.3-0.6 times the diameter of the core rod, and silicon carbide particles with a particle size of 5-20 μm are dispersed in the coating layer.

[0059] The support rod 41 adopts a stainless steel-silicone composite structure, a design that significantly improves the performance of the support rod 41 and the reliability of the entire valve. The inner layer of the support rod 41 is a stainless steel core rod. Stainless steel possesses high strength, good rigidity, and corrosion resistance, providing a solid structural support for the support rod 41. During the operation of the dual-disc dynamic circulation valve, fluid pressure and impact forces continuously act on the support rod 41. The stainless steel core rod effectively withstands these external forces, ensuring that the support rod 41 will not deform or be damaged, thus guaranteeing the stability of the entire valve core structure. The outer silicone coating layer plays multiple roles. Silicone has excellent flexibility and elasticity, which can buffer the impact of fluid on the support rod 41, reducing vibration and noise. Simultaneously, silicone also has good sealing properties, preventing fluid from penetrating to the surface of the stainless steel core rod, further improving the corrosion resistance of the support rod 41. The thickness of the silicone coating is precisely controlled within 0.3-0.6 times the diameter of the core rod. This thickness range ensures the silicone coating performs its intended function without excessively increasing the overall weight and volume of the support rod 41, thus affecting the normal operation of the valve. Silicon carbide microparticles with a particle size of 5-20 μm are uniformly dispersed within the silicone coating. Silicon carbide possesses extremely high hardness and wear resistance, and the presence of these microparticles significantly enhances the wear resistance of the silicone coating. During long-term use, impurities and particles in the fluid continuously rub against the surface of the support rod 41. The silicon carbide microparticles effectively resist this wear, extending the service life of the silicone coating and ensuring the long-term stable operation of the support rod 41. This stainless steel-silicone composite structure, combined with the silicon carbide microparticle design, allows the support rod 41 to adapt to various complex working environments, providing a strong guarantee for the efficient and reliable operation of the dual-valve dynamic circulation valve.

[0060] During long-term use, the elastic diaphragm 3 is prone to wear and aging due to frequent fluid scouring and pressure changes, resulting in a decrease in its elasticity and a significant reduction in the accuracy of flow control. Furthermore, the lack of an effective monitoring and adjustment mechanism makes it difficult to detect pressure changes within the system in real time and make corresponding adjustments. To address these technical deficiencies, this invention further includes a diaphragm adjustment device on the side of the diaphragm 3 furthest from the inlet end of the main pipeline 1. The diaphragm adjustment device can preferably be implemented using the following two technical solutions:

[0061] In another technical solution, the dual-valve dynamic circulation valve further includes a diaphragm adjustment device, which comprises:

[0062] The first adjusting rod 61 is perpendicular to the main pipeline 1 and extends through the outer wall of the main pipeline 1 into the main pipeline 1;

[0063] The second adjusting rod 62 has one end coaxially engaged with the first adjusting rod 61, and the other end passes through the side wall of the base 51 and is provided with a first bevel gear 63.

[0064] The rotating rod 64 is coaxially rotatably sleeved on the support rod 41. One end of the rotating rod 64 is provided with a second bevel gear 65 that meshes with the first bevel gear 63, and the other end extends toward the direction close to the diaphragm 3.

[0065] The movable rod 66 is coaxially threadedly rotatably connected to the other end of the rotating rod 64, and is axially slidably connected to the support rod 41;

[0066] Abutting block 6 is located at the other end of the moving rod 66. Abutting block 6 is made of elastic rubber or silicone.

[0067] In this technical solution, the diaphragm adjustment device includes a first adjusting rod, a second adjusting rod, a rotating rod, a moving rod, and a stop block. The first adjusting rod 61 is perpendicular to the main pipeline 1 and extends through its outer wall to the interior. The operator can conveniently operate the first adjusting rod 61 from outside the main pipeline 1. The second adjusting rod 62 is rotatably mounted on the side wall of the base 51 and is coaxially arranged with the first adjusting rod 61. After the valve core is inserted into the main pipeline and installed in place, the first adjusting rod 61 and the second adjusting rod 62 automatically engage. The specific engagement method can adopt the snap-fit ​​and slot method of the prior art (achieving axial linkage rotation is sufficient). The other end of the second adjusting rod 62 is coaxially fixed with a first bevel gear 63. The rotating rod 64 passes through... The bearing is coaxially mounted on the support rod 41. The second bevel gear 65 at one end meshes with the first bevel gear 63. Through gear transmission, power is transmitted to the rotating rod 64, causing it to rotate around the support rod 41. The moving rod 66 is coaxially threadedly connected to the other end of the rotating rod 64, and simultaneously slidably connected to the support rod 41 axially. Utilizing the threaded transmission principle, the rotational motion of the rotating rod 64 can be converted into the axial linear motion of the moving rod 66. The abutment block 6 is located at the other end of the moving rod 66. The linear movement of the moving rod drives the linear movement of the abutment block, thereby adjusting the distance between the abutment block and the diaphragm. The abutment block is made of elastic rubber or silicone, providing suitable elastic support when in contact with the diaphragm 3. When the diaphragm is normal, the abutment block is relatively far from the diaphragm, and the abutment block and the diaphragm do not contact each other (no contact under both low and high water pressure). Figures 9-10 As shown), when the diaphragm experiences elastic fatigue, the diaphragm adjustment device is activated, and the abutment block moves towards the diaphragm, contacting it to provide elastic compensation (e.g., Figures 11-12 (as shown)

[0068] The working process of the diaphragm adjustment device is as follows: When it is detected that the diaphragm 3 has experienced elastic loss and fatigue due to long-term use, resulting in a slow response to changes in water pressure, the operator manually rotates the first adjustment rod 61. The rotation of the first adjustment rod 61 is transmitted to the second adjustment rod 62 through a coaxial snap-fit. The second adjustment rod 62 rotates accordingly, driving the first bevel gear 63 on it to rotate. The first bevel gear 63 and the second bevel gear 65 mesh with each other, driving the rotating rod 64 to rotate around the support rod 41. Since the moving rod 66 and the rotating rod 64 are connected by a threaded rotation, the rotation of the rotating rod 64 will cause the moving rod 66 to move linearly along the axial direction of the support rod 41, moving towards the diaphragm 3. When the abutment block 6 contacts the diaphragm 3, the rotation of the second adjustment rod 62 stops. The elastic abutment block provides a certain elastic support force to the diaphragm 3, helping the diaphragm 3 to recover its elasticity, enabling it to respond quickly to subsequent changes in water pressure, ensuring the continuous and efficient operation of the dual-valve dynamic circulation valve.

[0069] In another technical solution, the dual-valve dynamic circulation valve further includes a diaphragm adjustment device, which comprises:

[0070] The drive rod has one end located outside the housing and the other end sealed and rotates through the side wall of the housing to extend into the housing.

[0071] The worm gear mechanism has a worm 71 that is sealed and rotatably mounted on the base 51 and coaxially engaged with the other end of the drive rod, and a worm gear 72 that is coaxially fixedly sleeved on the support rod 41.

[0072] The abutment block 6 is made of elastic silicone. The abutment block 6 is connected to the output end of the worm gear mechanism through a threaded sleeve and is located on the side of the elastic diaphragm 3 away from the water inlet end. When the drive rod rotates, the worm gear mechanism pushes the abutment block 6 to move axially, and the abutment block 6 provides elastic compensation for the elastic diaphragm 3. The threaded sleeve specifically includes a threaded rod 73 that is coaxially rotatably sleeved on the support rod 41 through a bearing and a sleeve 74 that is threadedly rotatably connected to the threaded rod 73. The worm gear 72 is coaxially fixedly sleeved on the threaded rod 73, and the sleeve 74 is slidably connected to the support rod 41 axially. The abutment block 6 is located on the sleeve 74.

[0073] This utility model provides another solution for a diaphragm adjustment device. Specifically, in this solution, the diaphragm adjustment device includes a drive rod, a worm gear mechanism, a threaded sleeve, and a contact block. The gear transmission in the previous technical solution is replaced with a worm gear mechanism. The working principle is similar, and the adjustment method for the contact block is also similar. Figures 13-14 As shown, the specific adjustment process of the abutment block will not be described in detail here.

[0074] In both of the above schemes, the side of the abutment block opposite to the diaphragm is set as a concave surface. The abutment block applies elastic compensation to the edges of the two valves to ensure that the two valves have sufficient elasticity and can respond quickly to changes in water pressure, and adjust the flow rate of the annular fluid gap in a timely manner. While ensuring the normal flow of fluid in the main pipeline, it avoids excessive water pressure loss in the branch pipeline. Furthermore, in order to improve the stability of the abutment block 6, two diagonal braces 67 are symmetrically provided on the side of the abutment block 6 away from the diaphragm 3. One end of the diagonal brace 67 is connected to the side of the abutment block 6, and the other end is connected to the moving rod 66 / sleeve 74.

[0075] In another technical solution, the dual-valve dynamic circulation valve further includes:

[0076] Four fiber optic pressure sensors are evenly spaced along the circumference on the inner wall of the fixed base 52, and the fiber optic pressure sensors are radially corresponding to the circumferential edge of the undeformed diaphragm 3.

[0077] An electric motor is used to drive the first adjusting rod 61 / drive rod to rotate;

[0078] The controller is connected to the fiber optic pressure sensor. The controller receives the detection signal from the fiber optic pressure sensor and calculates the diaphragm pressure non-uniformity coefficient U, where U = [max(F...]. i )-min(F i )] / max(F i When U>0.15, the diaphragm adjustment device is activated, the controller drives the motor to start, and the motor drives the first adjustment rod 61 / drive rod to rotate, thereby performing compensation adjustment of the diaphragm 3.

[0079] In this technical solution, U is defined as the diaphragm pressure non-uniformity coefficient, which is a dimensionless parameter used to quantitatively evaluate the uniformity of pressure distribution on the elastic diaphragm 3 in the circumferential direction.

[0080] U is calculated using the following formula: U = [max(F)] i )-min(F i )] / max(F i ), where F i (i=1,2,3,4) represents the pressure values ​​measured by four fiber optic pressure sensors evenly spaced along the inner wall of the fixed base 52, max(F i ) is the maximum value among these four pressure measurements, min(F) i () is the minimum value.

[0081] The closer the U value is to 0, the more uniform the pressure is at each point on the circumference of diaphragm 3, and the diaphragm is in good working condition. When the U value is greater than 0.15, it indicates that the uneven distribution of pressure on diaphragm 3 exceeds the normal range, and there are problems such as elastic loss, fatigue or local damage. At this time, it is necessary to start the diaphragm adjustment device to compensate and adjust diaphragm 3 to ensure the flow control accuracy and stable operation of the dual-valve dynamic circulation valve.

[0082] In this technical solution, the intelligent adjustment system mainly consists of four fiber optic pressure sensors, a motor, and a controller. The four fiber optic pressure sensors are evenly spaced along the circumference on the inner wall of the fixed base 52 and are radially aligned with the circumferential edge of the undeformed diaphragm 3. This allows for accurate acquisition of the pressure information at various points around the circumference of the diaphragm 3. The motor is used to drive the first adjustment rod 61 or the drive rod to rotate, providing power to the diaphragm adjustment device. The controller is connected to the fiber optic pressure sensors and the motor, and is responsible for receiving the pressure signals detected by the sensors, processing the data, and controlling the motor based on the processing results.

[0083] In operation, the controller calculates a diaphragm pressure non-uniformity coefficient U based on the detection signals from the four fiber optic pressure sensors. When the calculated U value is greater than 0.15, it means that the pressure distribution at various points on the circumference of diaphragm 3 is uneven beyond the normal range. This may be due to elastic loss, fatigue, or local damage to diaphragm 3. At this time, the controller immediately activates the diaphragm adjustment device, driving the motor to rotate. The motor drives the first adjustment rod 61 or the drive rod to rotate, thereby compensating for and adjusting diaphragm 3, restoring diaphragm 3 to a good working state.

[0084] This technical solution uses a fiber optic pressure sensor to monitor the pressure at various points on the diaphragm 3 in real time, utilizes a controller for intelligent analysis and judgment, and then uses a motor-driven adjustment device for compensation and adjustment. This achieves dynamic adjustment of the working state of the diaphragm 3, which can not only correct abnormal states of the diaphragm 3 in a timely manner and improve the accuracy of flow control, but also effectively extend the service life of the diaphragm 3, reduce maintenance costs, and enhance the reliability and stability of the dual-valve dynamic circulation valve, enabling it to maintain efficient operation under various complex working conditions.

[0085] In another technical solution, the detection end surface of the fiber optic pressure sensor in the dual-valve dynamic circulation valve is covered with a hydrophobic nano-coating with a coating thickness ≤10μm and a contact angle ≥150°. The sensor signal line is led out along a spiral groove on the outer wall of the mounting base 52. The hydrophobic nano-coating prevents fluid from adhering to the detection end, avoiding the impact of liquid residue on pressure detection accuracy and ensuring accurate and reliable measurement. Simultaneously, the wiring method of leading the sensor signal line along the spiral groove on the outer wall of the mounting base 52 protects the signal line, reduces damage caused by fluid impact and friction, improves sensor lifespan, and ensures stable operation of the dual-valve dynamic circulation valve.

[0086] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0087] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A dual-valve dynamic circulation valve, characterized in that, The device includes a housing containing a main pipeline and branch pipelines, with both ends of the branch pipelines connected to the main pipeline. The main pipeline contains a valve core, which includes an elastic diaphragm and a connector. The elastic diaphragm is located between the two ends of the branch pipeline. The elastic diaphragm has a double-valve structure, comprising a central mounting area and two symmetrically located valves on either side of the mounting area. The mounting area is connected to the inner wall of the main pipeline via the connector. Under low water pressure, an annular fluid gap is formed between the two valves and the connector, allowing fluid to flow through the main pipeline. Under high water pressure, the two valves bend and deform away from the main pipeline, centered on the mounting area, increasing the annular fluid gap and thus increasing the flow rate in the main pipeline. The connector includes a base, a fixed seat, and a support rod. The fixed seat is snapped into the inner wall of the main pipeline, the base is snapped into the fixed seat, the support rod is snapped into the base, the installation area is fitted onto the support rod, and the edges of the two valves form an annular fluid gap with the inner wall of the fixed seat. The support rod is axially arranged along the direction of fluid flow in the main pipeline. The end of the support rod near the water inlet is provided with a positioning post that is inserted into the positioning hole located in the middle of the installation area. The end of the positioning post is provided with a first elastic buckle. The support rod is also provided with guide posts that are adapted to guide holes located on both sides of the installation area. The other end of the support rod away from the water inlet is provided with a mounting block that is inserted into the mounting hole of the base. The mounting block is provided with a second elastic buckle. The fixing seat is a ring structure that is snapped into the inner wall of the main pipeline and also snapped into the outer periphery of the base.

2. The dual-valve dynamic circulation valve as described in claim 1, characterized in that, Each valve has an elastic reinforcing rib with a trapezoidal cross-section at its edge. The elastic reinforcing rib is integrally formed with the valve and is narrower on the side closer to the center of the valve and wider on the side farther from the center of the valve.

3. The dual-valve dynamic circulation valve as described in claim 2, characterized in that, The width of the elastic reinforcing rib increases gradually from the middle of the valve to the outer edge, with a gradient ratio of 1:1.2 to 1:1.5, and the gradient change area accounts for 60-80% of the valve length.

4. The dual-valve dynamic circulation valve as described in claim 3, characterized in that, The diaphragm is made of elastic silicone and has a thickness of 0.8-1.2mm; the height of the elastic reinforcing ribs is 1.5-2 times the thickness of the diaphragm.

5. The dual-valve dynamic circulation valve as described in claim 4, characterized in that, The support rod is a stainless steel-silicone composite structure, including an inner stainless steel core rod and an outer silicone coating layer. The thickness of the silicone coating layer is 0.3-0.6 times the diameter of the core rod, and silicon carbide microparticles with a particle size of 5-20μm are dispersed in the coating layer.

6. The dual-valve dynamic circulation valve as described in claim 5, characterized in that, It also includes a diaphragm adjustment device, which comprises: The first adjusting rod is perpendicular to the main pipeline and extends through the outer wall of the main pipeline into the main pipeline; The second adjusting rod has one end coaxially engaged with the first adjusting rod, and the other end passes through the side wall of the base and is provided with the first bevel gear; A rotating rod is coaxially rotatably sleeved on a support rod. One end of the rotating rod is provided with a second bevel gear that meshes with the first bevel gear, and the other end extends toward the diaphragm. The movable rod is coaxially threaded to the other end of the rotating rod and slidably connected to the support rod along the axial direction. The abutment block is located at the other end of the moving rod and is made of elastic rubber or silicone.

7. The dual-valve dynamic circulation valve as described in claim 5, characterized in that, It also includes a diaphragm adjustment device, which comprises: The drive rod has one end located outside the housing and the other end sealed and rotates through the side wall of the housing to extend into the housing. The worm gear mechanism has a worm that is sealed and rotates through the base and is coaxially engaged with the other end of the drive rod, and the worm gear is coaxially fixedly sleeved on the support rod. The abutment block is made of elastic silicone. It is connected to the output end of the worm gear mechanism through a threaded sleeve and is located on the side of the elastic diaphragm away from the water inlet. When the drive rod rotates, the worm gear mechanism pushes the abutment block to move axially, and the abutment block provides elastic compensation for the elastic diaphragm.

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