An adaptive pressure reducing valve

Abstract

The utility model discloses a kind of self-adapting pressure reducing valves, including the valve body of tubular structure, valve body is equipped with valve seat and valve core, the valve seat includes baffle, a valve hole is arranged on baffle, the upper side of the valve hole is provided with flow guide ring, the upper side wall of the valve body is equipped with upper guide hole, lower side wall is equipped with lower guide hole;Core shaft is equipped on valve core, the both ends of the core shaft are respectively slidably connected with upper guide hole and lower guide hole;Adjusting seat is equipped above the valve body, adjusting seat is equipped with adjusting push plate, first elastic member is arranged between adjusting push plate and upper guide block, pressure regulating bolt is threadedly cooperated and arranged on the upper end of adjusting seat;Adjusting bolt is equipped in lower guide hole, second elastic member is arranged between the adjusting bolt and lower guide block.The pressure reducing valve changes opening degree by the movement of valve core in flow guide passage, realizes self-adapting adjustment, so as to reach the effect of self-adapting pressure fluctuation and pressure stabilization.

Description

Technical Field

[0001] This utility model relates to the field of pressure reducing valve technology, specifically to an adaptive pressure reducing valve. Background Technology

[0002] Pressure reducing valves are core devices for pressure control in fluid transport systems, widely used in civil, commercial, and industrial fields. Examples include water supply networks, industrial hydraulic transmission systems, HVAC water circulation systems, and the inlet of household water-related appliances where complex water conditions exist. Their core operating logic involves adaptively regulating the fluid pressure at the inlet through their internal structure, reducing high-pressure fluid to a safe pressure range that downstream equipment or pipelines can withstand. This ensures a stable fluid pressure output at the outlet, thereby protecting the lifespan of downstream equipment.

[0003] However, most existing pressure reducing valves are designed for fixed pressure reduction, meaning their pressure reduction ratio or outlet pressure setpoint is usually fixed or has a limited adjustment range. When the inlet pressure fluctuates significantly, these valves struggle to respond quickly and adaptively, which can easily lead to overpressure risks on the outlet side or insufficient output flow when the inlet pressure is low.

[0004] In addition, impurities in the fluid tend to accumulate in key throttling parts such as the valve core and valve seat. Long-term operation can lead to valve port blockage or sluggish operation, affecting regulation accuracy and reliability, and even causing the pressure reduction function to fail.

[0005] Meanwhile, traditional pressure reducing valves are often complex to maintain and replace elastic components, requiring specialized tools and long downtime, which increases the cost of use and maintenance. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to provide an adaptive pressure reducing valve that can adapt to inlet pressure fluctuations to achieve dynamic pressure regulation and is easy to maintain.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] An adaptive pressure reducing valve includes a tubular valve body with an inlet and an outlet, and a valve seat and a valve core are also provided inside the valve body. Its features are:

[0009] The valve seat includes a vertically arranged upper baffle, a lower baffle, and a horizontally arranged partition; the upper baffle and the lower baffle are respectively fixedly connected to the upper and lower sides of the partition, so that the upper baffle, the lower baffle, and the partition together separate the water inlet and the water outlet.

[0010] A valve hole is provided on the partition plate, and a flow guide ring is provided on the upper coaxial core of the valve hole. The flow guide ring has a flow guide channel, which is conical. The lower end diameter is larger than the upper end diameter, and the lower end diameter is greater than or equal to the diameter of the valve hole. An upper guide hole is provided on the upper side wall of the valve body opposite to the valve hole, and a lower guide hole is provided on the lower side wall of the valve body opposite to the valve hole.

[0011] The valve core has a disc structure with a diameter larger than the diameter of the upper end of the flow channel and smaller than the diameter of the valve hole. A spindle is provided on the valve core along the coaxial center line, and the two ends of the spindle are slidably connected to the upper guide hole and the lower guide hole through the upper guide block and the lower guide block, respectively. The valve core is always located in the valve hole and the flow channel during the up and down movement of the spindle.

[0012] An adjusting seat is provided above the valve body directly opposite the through hole. The adjusting seat is a cylindrical structure with a closed upper end and an open lower end. An adjusting push plate is provided inside the adjusting seat. A first elastic element is provided between the adjusting push plate and the upper guide block. A pressure adjusting bolt is threadedly provided at the upper end of the adjusting seat. The lower end of the pressure adjusting bolt extends into the adjusting seat and abuts against the upper push plate.

[0013] An adjusting bolt is provided in the threaded part of the lower guide hole, and a second elastic element is provided between the adjusting bolt and the lower guide block.

[0014] Furthermore, both the first elastic element and the second elastic element are helical springs.

[0015] Furthermore, a connecting flange is provided on the upper side of the valve body corresponding to the position of the upper guide hole, and a corresponding connecting flange is provided at the lower end of the adjusting seat. The adjusting seat and the valve body are fastened together by the cooperation of bolts and nuts passing through the two connecting flanges.

[0016] Furthermore, a protrusion is formed on the lower side of the valve body corresponding to the position of the lower guide hole, and the lower guide hole passes through the protrusion.

[0017] Furthermore, sealing rings are provided between the upper guide block and the upper guide hole, and between the lower guide block and the lower guide hole.

[0018] Furthermore, the mandrel is also provided with a cleaning assembly, the cleaning assembly comprising:

[0019] A bushing, located below the valve core and sleeved on the spindle, is rotatably connected to the spindle via a bearing and has a clearance fit with the valve core.

[0020] Multiple blades are arranged circumferentially along the bushing. The blades are inclined along the axis of the bushing and can rotate around the spindle under the action of fluid force.

[0021] The guide assembly includes a guide groove on the bushing and a guide post on the blade, the guide post being slidably connected to the guide groove; a lifting spring is sleeved on the guide post, and under the action of the lifting spring, the blade can fit against the side wall of the valve hole or the inner wall of the guide ring, so that the blade forms a scraper.

[0022] Furthermore, the end of the blade away from the bushing is inclined, forming a blade-like structure.

[0023] Furthermore, the two ends of the lifting spring are fixedly connected to the bushing and the blade, respectively. When the lifting spring is in its natural state, the end of the blade away from the bushing is in contact with or clearance fit with the valve hole.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] (1) By moving the valve core up and down in the conical guide channel, the opening of the guide channel can be changed, thereby adjusting the flow rate through the guide channel. When the water pressure at the inlet increases, the pressure on the valve core increases, which can push the valve core to move up, thereby reducing the flow rate through the guide channel and maintaining the pressure at the outlet. This allows the pressure reducing valve to automatically adjust according to the water pressure at the inlet, filter the fluctuation of the inlet pressure, and automatically maintain the stability of the outlet pressure.

[0026] (2) A cleaning component (blade, bushing and spring) is set on the spindle, which can use fluid (water) to drive the blade to rotate, thereby automatically and continuously scraping off the dirt on the inner wall of the valve hole and the guide channel, thus solving the problem of valve core jamming and adjustment failure caused by impurity accumulation; this makes the entire pressure reducing valve suitable for complex water quality environment, ensuring the stability and reliability of the pressure reducing valve in long-term operation.

[0027] (3) The spindle is connected to the valve body through adjusting bolts and adjusting seat, so that when the key elastic elements (first elastic element, second elastic element, etc.) have problems, maintenance can be carried out more quickly, which greatly simplifies the maintenance process and reduces the cost of use. Attached Figure Description

[0028] Figure 1 This is a half-section elevation view of the overall structure of this embodiment.

[0029] Figure 2 This is a cross-sectional view of the cleaning component in this embodiment.

[0030] In the diagram: 1—valve body, 2—valve core, 3—upper baffle, 4—lower baffle, 5—partition plate, 6—guide ring, 7—spindle, 8—upper guide block, 9—lower guide block, 10—adjusting seat, 11—adjusting push plate, 12—first elastic element, 13—pressure adjusting bolt, 14—adjusting bolt, 15—second elastic element, 16—shaft sleeve, 17—paddle blade, 18—guide column, 19—lifting spring. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0033] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Example: Reference Figure 1 , Figure 2An adaptive pressure reducing valve includes a tubular valve body 1 with an inlet and an outlet. The valve body 1 also contains a valve seat and a valve core 2. The valve seat includes a vertically arranged upper baffle 3, a lower baffle 4, and a horizontally arranged partition 5. The upper baffle 3 and lower baffle 4 are fixedly connected to the upper and lower sides of the partition 5, respectively. The projections of the upper baffle 3, lower baffle 4, and partition 5 onto a plane perpendicular to the axis of the valve body 1 are circular, and the diameter of the circular projection is the same as the inner diameter of the valve body 1, thus allowing the upper baffle 3, lower baffle 4, and partition 5 to collectively separate the inlet and outlet. In practice, as one embodiment, the upper baffle 3, lower baffle 4, and partition 5 are integrally formed with the valve body 1 (through die casting or other methods), resulting in better overall structural stability and higher strength. As another implementation, the upper baffle 3 and the lower baffle 4 are welded to the partition 5 to form an integral whole. The upper side of the upper baffle 3 is arc-shaped, and the lower side of the lower baffle 4 is also arc-shaped. During assembly, the upper baffle 3, the lower baffle 4, and both sides of the partition 5 are press-fitted with or welded to the inner wall of the valve body 1; thus, the overall cost is lower.

[0035] A circular valve hole is provided on the partition plate 5. A guide ring 6 is coaxially arranged on the upper side of the valve hole. The guide ring 6 has a guide channel, which is conical in shape. The lower end diameter is larger than the upper end diameter, and the lower end diameter is greater than or equal to the diameter of the valve hole. In implementation, the guide ring 6 is integrally formed with the partition plate 5 or welded to the partition plate 5. The inner edge of its lower end is flush with the upper edge of the valve hole, so that the valve hole and the guide channel transition smoothly. An upper guide hole is provided on the upper side wall of the valve body 1 opposite to the valve hole, and a lower guide hole is provided on the lower side wall of the valve body 1 opposite to the valve hole.

[0036] The valve core 2 has a disc structure with a diameter larger than the upper end aperture of the flow channel but smaller than the valve orifice diameter. A mandrel 7 is coaxially arranged on the valve core 2, penetrating it. In practice, the valve core 2 has a shaft hole. In one embodiment, the mandrel 7 passes through the shaft hole and is connected to the valve core 2 via a key and keyway. During assembly, one end of the mandrel 7 can be inserted into the valve body 1, then the valve core 2 can be fitted onto the end of the mandrel 7 inserted into the valve body 1. The positions of the mandrel 7 and the valve core 2 can then be adjusted to move the valve core 2 to the installation position, resulting in better overall structural stability. In another embodiment, the mandrel 7, after passing through the shaft hole, forms a tight fit with the valve core 2, making assembly more convenient. Both ends of the mandrel 7 are slidably connected to the upper and lower guide holes via upper guide blocks 8 and lower guide blocks 9, respectively, and the valve core 2 remains within the valve orifice and flow channel throughout the up-and-down movement of the mandrel 7. For ease of assembly, a connecting groove is provided on the upper guide block 8 and the lower guide block 9 respectively, and the two ends of the mandrel 7 are fitted through the connecting groove and tightly fitted together. To prevent leakage, sealing rings are provided between the upper guide block 8 and the upper guide hole, and between the lower guide block 9 and the lower guide hole. The sealing rings are fitted on the upper guide block 8 and the lower guide block 9 and can move synchronously with the upper guide block 8 and the lower guide block 9.

[0037] An adjusting seat 10 is provided above the through hole on the valve body 1. The adjusting seat 10 is a cylindrical structure with a closed upper end and an open lower end. An adjusting push plate 11 is provided inside the adjusting seat 10. The adjusting push plate 11 is located above the upper guide block 8, and a first elastic element 12 is provided between it and the upper guide block 8. In implementation, a connecting flange is provided on the upper side of the valve body 1 at the position corresponding to the upper guide hole; specifically, a connecting ring is formed on the upper side of the valve body 1 at the position corresponding to the upper guide hole, and the upper end of the connecting ring is folded outward to form a connecting flange. A corresponding connecting flange is provided at the lower end of the adjusting seat 10. The adjusting seat 10 and the valve body 1 are fastened together by bolts and nuts passing through the two connecting flanges. A pressure adjusting bolt 13 is threadedly provided on the upper end of the adjusting seat 10. The lower end of the pressure adjusting bolt 13 extends into the adjusting seat 10 and abuts against the upper push plate.

[0038] An adjusting bolt 14 is threaded into the lower guide hole. The adjusting bolt 14 extends into the lower guide hole from its lower side, and a second elastic element 15 is positioned between the adjusting bolt 14 and the lower guide block 9. In implementation, the lower side of the valve body 1 protrudes outwards from the position corresponding to the lower guide hole, forming a protrusion. The lower guide hole passes through this protrusion, thereby increasing the travel of the lower guide block 9 and expanding the adjustment range. In this design, both the first elastic element 12 and the second elastic element 15 are helical springs; the structure is simple, the cost is low, and the stability is good.

[0039] During assembly, by adjusting the tightness of the pressure adjusting bolt 13 and the adjusting bolt 14, the initial position of the valve core 2 is aligned with the position of the valve hole (i.e., located inside the valve hole). During use, when the water pressure is too high and causes the valve core 2 to be closed, it can be manually opened by adjusting the pressure adjusting bolt 13, and the output water pressure can be manually adjusted.

[0040] In implementation, a cleaning assembly is also provided on the mandrel 7, which includes a bushing 16, blades 17, and a guide assembly. The bushing 16 is located below the valve core 2 and is sleeved on the mandrel 7. The bushing 16 is rotatably connected to the mandrel 7 via a bearing and has a clearance fit with the valve core 2. In implementation, the bearing is connected to the mandrel 7 via a key and keyway fit (a keyway needs to be machined on the inner ring sidewall of the bearing), or it is tightly fitted to the mandrel 7. Multiple blades 17 are arranged circumferentially along the bushing 16. The blades 17 are inclined along the axis of the bushing 16 and can rotate around the mandrel 7 under the action of fluid force. As an optimization, the blades 17 are torsional along the axial direction of the bushing 16, so as to better interact with the fluid. The guide assembly includes a guide groove radially located on the outside of the bushing 16 and a guide post 18 located on the side of the blade 17 near the bushing 16. The end of the guide post 18 away from the blade 17 extends into the guide groove and is slidably connected to the guide groove. A lifting spring 19 is fitted onto the guide post 18. Under the action of the lifting spring 19, the blade 17 can fit against the side wall of the valve hole or the inner wall of the guide ring 6, forming a scraper. During implementation, the two ends of the lifting spring 19 are fixedly connected to the bushing 16 and the blade 17, respectively. When the lifting spring 19 is in its natural state, the end of the blade 17 away from the bushing 16 is fitted against or clearance-fitted against the side wall of the valve hole. This avoids the presence of the blade 17 affecting the movement of the valve core 2, resulting in better overall stability. The end of the blade 17 away from the bushing 16 is beveled, forming a blade-like structure, which enhances cleaning ability, effectively scrapes away stubborn dirt, and keeps the flow channel unobstructed.

[0041] During the workflow: Under normal circumstances, when atmospheric or low-pressure fluid (water) enters from the inlet, the water slowly flows through the gap between the valve core 2 and the guide channel, exerting a small force on the valve core 2. Since the water pressure on the upper and lower sides of the valve core 2 is the same, it will not cause the valve core 2 to move up and down. When high-pressure fluid (water) enters from the inlet, the pressure exerted by the fluid on the lower side of the valve core 2 increases, pushing the valve core 2 upward within the guide channel, compressing the first elastic element 12, thereby reducing the opening of the valve orifice. When the valve core 2 moves to a certain position, the first elastic element 12 is compressed, generating a reaction force to counteract the water pressure, thus stabilizing the position of the valve core 2 and achieving pressure reduction. When the inlet pressure fluctuates, the valve core 2 automatically adjusts its position to maintain a stable outlet pressure. At the same time, the fluid drives the blade 17 to rotate, and through the guide assembly, the rotating scraper ring is pressed tightly against the inner wall of the guide channel to scrape away dirt and prevent accumulation.

[0042] This design utilizes the vertical displacement of valve core 2 within the conical guide channel to alter the channel's opening, thereby regulating the flow rate. When the inlet water pressure increases, the pressure on valve core 2 increases, pushing it upwards and reducing the flow rate through the guide channel. This maintains the outlet pressure, allowing the pressure-reducing valve to automatically adjust based on the inlet water pressure, filtering inlet pressure fluctuations and maintaining stable outlet pressure. The spindle 7 is connected to the valve body 1 via adjusting bolts 14 and adjusting seat 10, enabling faster maintenance of critical elastic components (such as the first elastic element 12 and the second elastic element 15), significantly simplifying the maintenance process and reducing operating costs.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. An adaptive pressure reducing valve, comprising a tubular valve body having an inlet end and an outlet end, and a valve seat and a valve core further comprising the valve body, characterized in that: The valve seat includes a vertically arranged upper baffle, a lower baffle, and a horizontally arranged partition; the upper baffle and the lower baffle are respectively fixedly connected to the upper and lower sides of the partition, so that the upper baffle, the lower baffle, and the partition together separate the water inlet and the water outlet. A valve hole is provided on the partition plate, and a flow guide ring is provided on the upper coaxial core of the valve hole. The flow guide ring has a flow guide channel, which is conical. The lower end diameter is larger than the upper end diameter, and the lower end diameter is greater than or equal to the diameter of the valve hole. An upper guide hole is provided on the upper side wall of the valve body opposite to the valve hole, and a lower guide hole is provided on the lower side wall of the valve body opposite to the valve hole. The valve core has a disc structure with a diameter larger than the diameter of the upper end of the flow channel and smaller than the diameter of the valve hole. A spindle is provided on the valve core along the coaxial center line, and the two ends of the spindle are slidably connected to the upper guide hole and the lower guide hole through the upper guide block and the lower guide block, respectively. The valve core is always located in the valve hole and the flow channel during the up and down movement of the spindle. An adjusting seat is provided above the valve body directly opposite the through hole. The adjusting seat is a cylindrical structure with a closed upper end and an open lower end. An adjusting push plate is provided inside the adjusting seat. A first elastic element is provided between the adjusting push plate and the upper guide block. A pressure adjusting bolt is threadedly provided at the upper end of the adjusting seat. The lower end of the pressure adjusting bolt extends into the adjusting seat and abuts against the upper push plate. An adjusting bolt is provided in the threaded part of the lower guide hole, and a second elastic element is provided between the adjusting bolt and the lower guide block.

2. The adaptive pressure reducing valve according to claim 1, characterized in that: Both the first elastic element and the second elastic element are helical springs.

3. The adaptive pressure reducing valve according to claim 1, characterized in that: On the upper side of the valve body, a connecting flange is provided at the position corresponding to the upper guide hole, and a corresponding connecting flange is provided at the lower end of the adjusting seat. The adjusting seat and the valve body are fastened together by the cooperation of bolts and nuts passing through the two connecting flanges.

4. The adaptive pressure reducing valve according to claim 1, characterized in that: The lower side of the valve body protrudes outward to form a protrusion corresponding to the lower guide hole, and the lower guide hole passes through the protrusion.

5. The adaptive pressure reducing valve according to claim 1, characterized in that: A sealing ring is provided between the upper guide block and the upper guide hole, and between the lower guide block and the lower guide hole.

6. The adaptive pressure reducing valve according to claim 1, characterized in that: The mandrel is also provided with a cleaning component, the cleaning component comprising: A bushing, located below the valve core and sleeved on the spindle, is rotatably connected to the spindle via a bearing and has a clearance fit with the valve core. Multiple blades are arranged circumferentially along the bushing. The blades are inclined along the axis of the bushing and can rotate around the spindle under the action of fluid force. The guide assembly includes a guide groove on the bushing and a guide post on the blade, the guide post being slidably connected to the guide groove; a lifting spring is sleeved on the guide post, and under the action of the lifting spring, the blade can fit against the side wall of the valve hole or the inner wall of the guide ring, so that the blade forms a scraper.

7. An adaptive pressure reducing valve according to claim 6, characterized in that: The end of the blade away from the bushing is inclined, forming a blade-like structure.

8. An adaptive pressure reducing valve according to claim 6, characterized in that: The two ends of the lifting spring are fixedly connected to the bushing and the blade, respectively. When the lifting spring is in its natural state, the end of the blade away from the bushing is in contact with or clearance fit with the valve hole.

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