Self-supporting flow control valve

Abstract

The utility model discloses a self-standing flow control valve which is characterized in that a valve body assembly is provided with a liquid inlet and a liquid outlet, and a communication channel for communicating the liquid inlet with the liquid outlet is arranged between a valve core and the valve body assembly; the adjusting assembly is installed in the valve body assembly and comprises an adjusting frame and a flexible part, the flexible part is connected between the outer portion of the adjusting frame and the valve body assembly and can stretch out and draw back when the adjusting frame moves, and a first cavity is defined by the flexible part, the adjusting frame, one part of the valve body assembly and one part of the valve element. A second cavity is defined by the adjusting frame, the other part of the valve body assembly and the other part of the valve element; the first cavity is communicated with the liquid inlet, the second cavity is communicated with the communicating channel, and when the pressure of the first cavity changes, the adjusting frame moves relative to the valve body assembly to adjust the opening degree of the communicating channel so as to adjust the pressure of the second cavity and keep the pressure difference between the second cavity and the first cavity unchanged. According to the embodiment of the utility model, when the water inlet pressure changes, the stable and unchanged water outlet flow can be kept, and the adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the field of fluid regulation, and in particular to a self-standing flow control valve. Background Technology

[0002] In heating systems, changes in water flow for some users, such as when it is shut off or adjusted, can alter the system's pressure distribution, leading to changes in flow for other users. This hydraulic imbalance is random and dynamic, causing users at different distances from the heat source to experience abnormalities such as overheating or undercooling, thus affecting heating quality.

[0003] This imbalance can only be solved by a dynamic balancing valve, but current dynamic valves are still complex in structure, inconvenient to adjust, and have room for improvement. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a self-supporting flow control valve. The self-supporting flow control valve uses a valve core positioned at a set location on the valve body assembly to control the required outflow rate. When the pressure in the first chamber changes, the adjusting assembly adjusts the opening size of the connecting channel to change the pressure in the second chamber accordingly, maintaining a constant pressure difference between the first and second chambers. In other words, it maintains a stable outflow rate even when the inlet pressure changes, and is easy to adjust.

[0005] A self-supporting flow control valve according to an embodiment of the present invention includes: a valve body assembly, a valve core, and an adjusting assembly; the valve body assembly has an inlet and an outlet; the valve core is installed inside the valve body assembly, and a communicating channel is formed between the valve core and the valve body assembly, connecting the inlet and the outlet; the adjusting assembly is installed inside the valve body assembly, and the adjusting assembly has an adjusting frame and a flexible member, the flexible member being connected to the outside of the adjusting frame and the valve body assembly and being extendable and retractable when the adjusting frame moves; the flexible member, the adjusting frame, a part of the valve body assembly, and a part of the valve core define a first cavity, and the adjusting frame, another part of the valve body assembly, and another part of the valve core define a second cavity; wherein, the first cavity communicates with the inlet, the second cavity communicates with the communicating channel, and when the pressure in the first cavity changes, the adjusting frame moves relative to the valve body assembly to adjust the opening of the communicating channel, thereby adjusting the pressure in the second cavity and keeping the pressure difference between the second cavity and the first cavity constant.

[0006] According to the self-supporting flow control valve of this utility model embodiment, in the initial state, the valve core is installed in a fixed position of the valve body assembly according to the required water flow rate, while the regulating assembly is movable relative to the valve core. When the inlet water pressure changes, the pressure in the first chamber changes, which causes the regulating frame of the regulating assembly to move, so that the regulating frame adjusts the size of the connecting channel, thereby causing the pressure in the second chamber to change accordingly, but always keeping the pressure difference between the first chamber and the second chamber constant, thereby keeping the flow rate at the outlet within the required flow rate range, so that the water flow rate does not change due to changes in the inlet water pressure. The structure is simple and the adjustment is convenient.

[0007] According to an embodiment of the present invention, the self-supporting flow control valve further includes an elastic element, which is sleeved on the valve core. The adjusting frame is movably sleeved on the valve core and presses against the elastic element. When the pressure in the first chamber changes, the elastic element applies a force to the adjusting assembly to adjust the size of the connecting channel, so that the pressure in the second chamber changes, while keeping the pressure difference between the first chamber and the second chamber constant.

[0008] According to an embodiment of the present utility model, the self-supporting flow control valve includes a valve core comprising a connected valve stem and a base. The base includes at least two circumferentially arranged throttling vanes. A liquid passage is defined between adjacent throttling vanes and the valve body assembly. The liquid passage is connected to the communication channel.

[0009] According to an embodiment of the present utility model, the self-supporting flow control valve has a flow guiding channel inside the valve stem, a first flow guiding port on the base and a second flow guiding port on the valve stem, both the first flow guiding port and the second flow guiding port are connected to the flow guiding channel, and the first flow guiding port is connected to the liquid inlet and the second flow guiding port is connected to the first cavity.

[0010] According to an embodiment of the present utility model, the self-supporting flow control valve includes a valve body assembly comprising a detachably connected valve body and a valve cover, wherein the valve core passes through the valve cover and at least partially enters the valve body, and a first cavity is formed between the adjusting bracket, the flexible member, and the valve cover, wherein at least a flow gap is provided between the inner peripheral wall of the valve cover where it connects to the valve core and the outer peripheral wall of the valve core, and the flow gap connects the second flow guide port to the first cavity.

[0011] According to an embodiment of the present utility model, the self-supporting flow control valve has a limiting member at the bottom of the valve cover, the limiting member has a through hole, the valve core passes through the valve cover and through the through hole, and the limiting member also has a radially extending opening in its circumferential direction, the opening communicating with the flow gap and with the first cavity.

[0012] The self-standing flow control valve according to an embodiment of the present utility model further includes a first sleeve, which is sleeved on the valve core and at one end of the flow gap away from the first cavity, and the valve cover is threadedly connected to the first sleeve.

[0013] According to the self-supporting flow control valve of this utility model embodiment, the inner wall of the first sleeve is provided with a first receiving groove, which is used to receive lubricating oil.

[0014] The self-supporting flow control valve according to an embodiment of the present utility model further includes a second sleeve, which is movably sleeved on the valve core and fixedly connected to the adjusting component. The inner wall of the second sleeve is provided with a second receiving groove for receiving lubricating oil.

[0015] According to the self-standing flow control valve of this utility model embodiment, both the inlet and the outlet are provided with pressure testing holes, which are used to install pressure testers.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural cross-sectional view of the self-supporting flow control valve according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the valve core of the self-supporting flow control valve according to an embodiment of the present invention;

[0020] Figure 3 This is a partial schematic cross-sectional view of the self-supporting flow control valve according to an embodiment of the present utility model.

[0021] Figure 4 This is a partial schematic cross-sectional view of the self-supporting flow control valve according to an embodiment of the present utility model.

[0022] Figure 5 This is a schematic diagram of the valve cover of the self-supporting flow control valve according to an embodiment of the present utility model;

[0023] Figure 6 This is a partial structural schematic diagram of the self-standing flow control valve according to an embodiment of the present invention.

[0024] Figure label:

[0025] Self-standing flow control valve 100

[0026] Valve core 1, base 11, first guide port 111, throttling plate 112, throttling channel 113, valve stem 12, second guide port 121, valve body assembly 2, valve body 21, valve cover 22, liquid inlet 211, liquid outlet 212, connecting channel 213, valve seat 214, connecting port 2141, gasket 215, first cavity 23, second cavity 24, adjusting assembly 3, adjusting frame 31, flexible component 311, elastic component 32, second sleeve 4, first section 41, second section 42, second receiving groove 43, second sealing ring 44, first sleeve 5, first receiving groove 51, first sealing ring 52, limiting component 6, opening 61, through hole 62, support frame 7, horizontal support part 71, vertical support part 72, support ring 73, flow gap 8, pressure measuring hole 9. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0030] The following is for reference. Figures 1-6The self-standing flow control valve 100 according to an embodiment of the present invention describes that, in the initial state, the valve core 1 is installed in a fixed position of the valve body assembly 2 according to the required water flow rate, while the adjusting bracket 31 of the adjusting assembly 3 is movable relative to the valve core 1. When the inlet water pressure changes, the pressure of the first chamber 23 changes, which causes the adjusting bracket 31 to move, thereby adjusting the size of the connecting channel 213. This causes the pressure of the second chamber 24 to change accordingly, but the pressure difference between the first chamber 23 and the second chamber 24 remains constant. This ensures that the flow rate of the outlet 212 is maintained within the required flow rate range, and that the water flow rate does not change due to changes in the inlet water pressure. The structure is simple and the adjustment is convenient.

[0031] like Figure 1-6 As shown, a self-standing flow control valve 100 according to an embodiment of the present invention includes: a valve body assembly 2, a valve core 1, and an adjustment assembly 3.

[0032] The valve body assembly 2 is provided with an inlet 211 and an outlet 212; the valve core 1 is installed inside the valve body assembly 2, and a connecting channel 213 is formed between the valve core 1 and the valve body assembly 2, connecting the inlet 211 and the outlet 212; the regulating assembly 3 is installed inside the valve body assembly 2, and the regulating assembly 3 is provided with an regulating frame 31 and a flexible member 311. The flexible member 311 is connected to the outside of the regulating frame 31 and the valve body assembly 2 and can extend and retract when the regulating frame 31 moves. The flexible member 311, the regulating frame 31, a part of the valve body assembly 2, and a part of the valve core 1 define a first cavity 23, and the regulating frame 31, another part of the valve body assembly 2, and another part of the valve core 1 define a second cavity 24.

[0033] The first chamber 23 is connected to the liquid inlet 211, and the second chamber 24 is connected to the connecting channel 213. When the pressure of the first chamber 23 changes, the regulating frame 3 moves relative to the valve body assembly 2 to adjust the opening of the connecting channel 213, so as to adjust the pressure of the second chamber 24 and keep the pressure difference between the second chamber 24 and the first chamber 23 constant.

[0034] In practice, the valve core 1 can be at least partially installed in the valve body assembly 2. The communication channel 213 between the valve core 1 and the valve body assembly 2 is adapted to allow water to flow from the inlet 211 to the outlet 212 through the communication channel 213 when water is supplied through the inlet 211, thereby supplying water to the user through the outlet 212.

[0035] Specifically, the valve body assembly 2 in this embodiment of the present invention is constructed as follows: Figure 1Water enters from the left and exits from the right. Initially, the valve core 1 can determine its position based on the required flow rate of water flowing out of the outlet 212. For example, a drive unit can be installed on the top of the valve core 1. After the drive unit drives the valve core 1 to move to the preset position, the valve core 1 will no longer move when the self-standing flow control valve 100 is working. That is, the vertical movement position of the valve core 1 relative to the valve body assembly 2 depends on the required flow rate of water flowing out of the outlet 212.

[0036] Additionally, the adjusting assembly 3 is sleeved on the valve core 1 and can move relative to the valve core 1. The adjusting assembly 3 includes an adjusting frame 31 and a flexible member 311, as shown in the figure. Figure 1 and Figure 3 As shown, the regulating frame 31 can be constructed as a U-shaped structure. The flexible component 311 uses a high-performance diaphragm and reinforcing fiber material, or it can be made of rubber material. The flexible component 311 flexibly connects the regulating frame 31 and the valve body assembly 2. When the regulating assembly 31 moves along... Figure 1 During the up-and-down movement, the volume of the first cavity 23 can change due to the action of the flexible component 311, while the adjustment component 3 can move normally and maintain the sealing of the first cavity 23.

[0037] The first chamber 23 is connected to the inlet 211, and the second chamber 24 is connected to the connecting channel 213, which in turn is connected to the outlet 212. When water enters through the inlet 211, it can flow into both the first chamber 23 and the second chamber 24. If the pressure of the water flowing into the first chamber 23 is P1, and P1 is equal to the inlet pressure, and the pressure of the water flowing into the second chamber 24 is P2, then because the water flowing into the second chamber 24 is throttled, the pressure P2 is less than the inlet pressure. When the inlet 211... When the pressure of the incoming water remains constant, the pressure difference P1-P2 between the first chamber 23 and the second chamber 24 is a and remains constant, and the regulating component 3 is stationary. However, when the pressure of the water entering through the inlet 211 changes, the pressure of the first chamber 23 changes, causing the regulating component 3 to move and adjust the opening of the connecting channel 213, thereby adjusting the pressure of the second chamber 24. This ensures that the pressure difference between the second chamber 24 and the first chamber 23 remains constant, meaning that a stable outflow rate is maintained even when the inlet water pressure changes, making adjustment convenient.

[0038] If the pressure difference between the first chamber 23 and the second chamber 24 increases, but P1 is always greater than P2 (meaning P1-P2 increases), the regulating frame 31 will move downward along the valve core 1, reducing the size of the connecting channel 213 between the regulating frame 31 and the valve body assembly 2. This will keep the pressure difference between the first chamber 23 and the second chamber 24 unchanged from the previous pressure difference, thus keeping the flow rate constant.

[0039] If the pressure difference between the first chamber 23 and the second chamber 24 decreases, the regulating bracket 31 can move upward along the valve core 1, increasing the size of the connecting channel 213. This will maintain the pressure difference between the first chamber 23 and the second chamber 24 at the previous level, thus ensuring that the flow rate at the outlet 212 remains constant and does not change due to changes in the incoming flow pressure. The flexible component 311 allows the regulating bracket 31 to move normally and maintains the sealing of the first chamber 23.

[0040] Therefore, by adjusting the size of the connecting channel 213 through the water pressure entering through the inlet 211, the flow rate of the water flowing out through the outlet 212 remains constant, which reduces the impact of the water pressure at the inlet 211 on the flow rate at the outlet 212, thereby improving the user experience. The self-standing flow control valve 100 of this utility model embodiment is easy to adjust and has a simple structure.

[0041] In some embodiments, the self-standing flow control valve 100 further includes an elastic element 32, which is sleeved on the valve core 1. The adjusting bracket 31 is movably sleeved on the valve core 1 and presses against the elastic element 32. When the pressure of the first chamber 23 changes, the elastic element 32 applies a force to the adjusting assembly 3 to adjust the size of the connecting channel 213 so that the pressure of the second chamber 24 changes, while keeping the pressure difference between the first chamber 23 and the second chamber 24 constant.

[0042] Reference Figure 1 As shown, the elastic element 32 is a spring, which is sleeved on the outer periphery of the valve core 1 and located inside the valve body assembly 2. The adjusting bracket 31 is located inside the valve body assembly 2, sleeved and connected to the outer periphery of the valve core 1, and presses against the spring. The adjusting bracket 31 can move relative to the valve core 1. Initially, the adjusting bracket 31 compresses the spring, and the water in the inlet 211 flows to the first chamber 23 and also to the second chamber 24. If the valve body assembly 2 may include a connected valve body 21 and valve cover 22, the valve core 1 passes through the valve cover 22 and at least partially penetrates into the valve body 21. Figure 1 The first cavity 23 is located above the spring. The first cavity 23 is the space formed by the flexible part 311, the adjusting frame 31 and the valve cover 22. The second cavity 24 is the space formed by the adjusting frame 31, the valve core 1 and the valve body 21. When the water pressure at the inlet 211 changes, the amount of compression of the spring also changes.

[0043] When the pressure P1 in the first chamber 23 is greater than the pressure P2 in the second chamber 24, and the pressure difference is P1-P2, the spring is compressed by a factor of b1, and the adjusting component 3 is stationary. When the inlet pressure increases, the pressure difference P1-P2 increases, which means the pressure difference increases, the spring is further compressed, and the adjusting frame 31 moves downward, thereby reducing the size of the connecting channel 213 so that the pressure difference between the first chamber 23 and the second chamber 24 is maintained at the pressure difference when the adjusting component 3 is stationary.

[0044] When the pressure in the first chamber 23 decreases, the pressure difference P1-P2 decreases, the spring returns to its original position, causing the adjusting component 3 to move upwards, which in turn causes the adjusting frame 31 to move upwards. At this time, the connecting channel 213 becomes larger. Thus, a larger inlet water pressure corresponds to a smaller connecting channel 213, and a smaller inlet water pressure corresponds to a larger connecting channel 213. Ultimately, the flow rate of water flowing out of the outlet 212 remains stable, meaning that the flow rate of water at the outlet 212 does not change due to changes in the inlet water pressure.

[0045] In some embodiments, the valve core 1 includes a connected valve stem 12 and a base 11. The base 11 includes at least two circumferentially arranged throttling vanes 112. A liquid passage is defined between adjacent throttling vanes 112 and the valve body assembly 2. The liquid passage communicates with the communication channel 213.

[0046] Reference Figure 2 As shown, the base 11 of the valve core 1 is constructed in a disc shape, and multiple throttling vanes 112 are arranged circumferentially on the disc. Each throttling vane 112 is similar to an inverted triangle, and a throttling channel 113 is left between adjacent triangular throttling vanes 112. The throttling channel 113 between adjacent triangular throttling vanes 112 and the valve body assembly 2 define a liquid passage. Moreover, the throttling channel 113 is mainly divided into three sections. The first section is the area between the square cross sections at the bottom of two adjacent throttling vanes 112, the second section is the area formed between the hypotenuses of adjacent triangles, and the third section is the area between the tops of adjacent throttling vanes 112. By setting the cross section of the throttling channel 113 formed by adjacent throttling vanes 112 to a three-section design, the flow characteristics of the dynamic flow balancing valve can be guaranteed to be equal percentage characteristics. Equal percentage characteristics mean that the percentage change in flow of the regulating valve is equal throughout the entire stroke, that is, the relative flow change caused by a unit relative stroke change is proportional to the relative flow at that point. This characteristic results in a small amplification factor and smooth, gentle adjustment at small openings, and a large amplification factor and sensitive, effective adjustment at large openings. The equal percentage flow characteristic is beneficial for the operation of the control system, especially under heavy loads, providing more effective regulation. That is, as the stroke of valve core 1 gradually increases, the percentage increase in flow rate remains constant. The stroke of valve core 1 is the distance between valve core 1 and valve seat 214 along the height of valve core 1 during the initial movement of valve core 1.

[0047] In addition, the valve body assembly 2 is provided with a connecting port 2141. Two adjacent throttling plates 112 of the valve core 1 are located above the connecting port 2141, and the throttling plates 112 are partially located inside the connecting port 2141. That is, the two adjacent throttling plates 112 and the valve body assembly 2 define a liquid passage at the connecting port 2141. When water flows from the inlet 211 to the first chamber 23, the first chamber 23 is located in the upper part of the water flow direction. As the water flow gradually increases, static pressure is generated, that is, the pressure of the first chamber 23 and the inlet 211 are the same. At the same time, the water flow also passes through the adjacent... After the flow is throttled by the throttling channel 113 between the triangular throttling plates 112, the liquid flows to the second chamber 24 through the liquid inlet. Due to the effect of the triangular throttling plates 112, the water pressure at the inlet 211 and the water pressure in the second chamber 24 are different. When the pressure at the inlet 211 is P1, the pressure flowing to the first chamber 23 is also P1. The adjacent triangular throttling plates 112 cause the area of ​​the left and right flow directions to change, so the pressure in the second chamber 24 becomes P2. That is, the pressure of the water flow can be divided into P1 flowing to the first chamber 23 and P2 flowing to the second chamber 24.

[0048] When the pressure of the incoming flow at the inlet 211 changes, the regulating frame 31 moves, thereby adjusting the pressure in the second chamber 24 so that the pressure difference between the second chamber 24 and the first chamber 23 remains constant. The movement of the regulating frame 31 is equivalent to changing the pressure of the water flowing into the second chamber 24, which is also the outlet 212. This means that when the water pressure at the inlet 211 changes, the pressure of the water flowing into the second chamber 24 can be changed accordingly, so that the water flow rate at the inlet 211 and the water flow rate at the outlet 212 are kept in balance, thereby keeping the water flow rate at the outlet 212 always within the set range.

[0049] In some embodiments, the valve stem 12 is provided with a flow guiding channel, the base 11 is provided with a first flow guiding port 111 and the valve stem 12 is provided with a second flow guiding port 121. The first flow guiding port 111 and the second flow guiding port 121 are both connected to the flow guiding channel, and the first flow guiding port 111 is connected to the liquid inlet 211 and the second flow guiding port 121 is connected to the first cavity 23.

[0050] Specifically, Figure 1 The liquid inlet 211 is located at the bottom of the valve core 1 and faces towards Figure 1 The left side is open, and the outlet 212 is located on the right side of the valve core 1 and the regulating assembly 3 and faces towards... Figure 1The right side is open. When water flows in from the inlet 211, as water is continuously injected, the water level rises. The water can flow along the first guide port 111 of the base 11 of the valve core 1 to the guide channel, and from the guide channel to the second guide port 121, and from the second guide port 121 to the first chamber 23. That is, the water pressure in the first chamber 23 is the same as the inlet water pressure. At the same time, the water flows through the liquid passage formed between the adjacent throttling plate 112 of the valve core 1 and the valve body assembly 2 to the second chamber 24, that is, the space formed between the regulating frame 31, the valve core 1 and the valve body 21. When the inlet water pressure is constant, the pressure in the first chamber 23 and the second chamber 24 remains constant. When the water pressure entering through the inlet 211 changes, the pressure in the first chamber 23 also changes, thereby changing the position of the regulating assembly 3, that is, changing the size of the connecting channel 213, and keeping the outflow of water constant.

[0051] Therefore, by setting a flow guide channel inside the valve core 1, the space required for setting a flow guide channel inside the valve body assembly 2 is saved, and communication with the first chamber 23 is achieved, resulting in higher integration. The water in the flow guide channel is basically stagnant water, so it will not carry impurities in; moreover, as the water flows from bottom to top, there will be no scale blockage; and because the pressure P1 in the first chamber is relatively high, it will also flush away scale, preventing large-scale deposition; in addition, the second flow guide port 121 is located on the upper side of the valve core 1, making it difficult for impurities to enter the second flow guide port 121 under the action of gravity.

[0052] Moreover, the first guide port 111 of the guide channel is directly opposite the connecting port 2141, and the connecting port 2141 is opposite to the liquid inlet 211. That is, after water enters through the liquid inlet 211, it can smoothly enter the guide channel through the connecting port 2141, making the water intake smoother and improving the accuracy of the regulating component 3 in controlling the size of the connecting channel 213.

[0053] In some embodiments, the valve body assembly 2 includes a detachably connected valve body 21 and valve cover 22, the valve core 1 passes through the valve cover 22 and is at least partially inserted into the valve body 21, a first cavity 23 is formed between the adjusting frame 31, the flexible member 311 and the valve cover 22, and at least a flow gap 8 is left between the inner peripheral wall of the valve cover 22 where it connects to the valve core 1 and the outer peripheral wall of the valve core 1, the flow gap 8 communicating the second guide port 121 with the first cavity 23.

[0054] In practice, the valve cover 22 and the valve body 21 can be detachably connected by bolts. First, the regulating component 3 is installed on the valve core 1, and the valve core 1 with the regulating component 3 installed is installed inside the valve body 21. Then, the valve cover 22 is connected to the valve body 21 and the valve core 1, thereby realizing the installation of the self-standing flow control valve 100. By setting the self-standing flow control valve 100 to a detachable connection between the valve cover 22 and the valve body 21, the convenience of installing the internal structure can be improved.

[0055] A first cavity 23 is formed between the adjusting frame 31, the flexible member 311, and the valve cover 22 of the adjusting assembly 3. If the flexible member 311 of the adjusting frame 31 is connected to the valve body 21, then the first cavity 23 is defined between the flexible member 311, the top of the adjusting frame 31, and the valve cover 22. The first cavity 23 is connected to the second guide port 121 of the valve core 1, which means it is combined with… Figure 1 and Figure 3 As shown, water enters the flow channel of valve core 1 and flows through the second flow port 121 to the flow gap 8, and then flows from the flow gap 8 to the first chamber 23, realizing the connection between the inlet port 211 and the first chamber 23. Thus, the design of the first chamber 23 utilizes the structure of the valve cover 22, and the flow gap 8 left between the valve core 1 and the valve cover 22 allows the water from the inlet port 211 to flow smoothly into the first chamber 23.

[0056] Additionally, it should be noted that the valve body 21 of this embodiment is also provided with a valve seat 214, which is located between the liquid inlet 211 and the liquid outlet 212. The connecting port 2141 is located at the valve seat 214, and the size of the connecting channel 213 is determined by adjusting the distance between the adjusting component 3 and the valve seat 214. When the liquid flowing from the liquid inlet 211 to the connecting port 2141 flows to the liquid outlet 212, a portion of the water is blocked by the bottom of the adjusting component 3. Therefore, by moving the adjusting component 3 closer to or further away from the valve seat 214, the size of the connecting channel 213 is changed.

[0057] It should also be noted that, referring to Figure 6 As shown, the valve seat 214 is also equipped with a support frame 7, which includes a horizontal support part 71, a vertical support part 72, and a support ring 73. The horizontal support part 71 is sleeved on the valve core 1, and one end of the vertical support part 72 is connected to the horizontal support part 71 and the other end is connected to the support ring 73.

[0058] The support ring 73 can be snapped into the valve seat 214. If the valve seat 214 has a groove matching the size of the support ring 73, then the support frame 7 and the valve body 21 are connected. Furthermore, the base 11 of the valve core 1 and the triangular throttling plate 112 are located on the side of the transverse support 71 near the support ring 73. This means the valve core 1 can move up and down relative to the support frame 7 to adjust the flow rate of the appropriate outlet 212. The support frame 7 mainly supports and guides the bottom of the valve core 1, making the valve core 1 more stable. When the corresponding adjusting component 3 is fitted outside the valve core 1 and can move up and down relative to the valve core 1, the stability of the adjusting component 3 is improved, thereby improving the accuracy of the adjusting component 3 in adjusting the size of the connecting channel 213, thus keeping the flow rate of the outlet 212 stable.

[0059] Furthermore, the top of the adjusting frame 31 is provided with a gasket 215, which presses one end of the flexible member 311, and the other end of the flexible member 311 is connected between the valve cover 22 and the valve body 21 to ensure the reliability of the connection of the flexible member 311.

[0060] In some embodiments, the bottom of the valve cover 22 is provided with a limiting member 6, the limiting member 6 is provided with a through hole 62, when the valve core 1 passes through the valve cover 22 and passes through the through hole 62, the limiting member 6 is also provided with a radially extending opening 61 in the circumferential direction, the opening 61 communicates with the flow gap 8 and communicates with the first cavity 23.

[0061] Reference Figure 5 and Figure 3 As shown, when the adjusting component 3 moves close to the valve cover 22, due to the setting of the limiting member 6, that is, when the adjusting component 3 moves upward to the maximum distance, it contacts and presses against the limiting member 6. When the water entering through the inlet 211 flows out through the guide channel and the second guide port 121 to the flow gap 8, assuming that the adjusting frame 31 is directly pressed against the valve cover 22, the water cannot flow smoothly into the first cavity 23 after flowing into the flow gap 8. However, by setting a radially extending opening 61 in the circumference of the limiting member 6, and the opening 61 is connected to the first cavity 23, that is, connected to the space defined by the top of the adjusting frame 31 and the valve cover 22, the water flowing out from the second guide port 121 can flow into the flow gap 8, and from the flow gap 8 to the opening 61 of the limiting member 6, thus flowing into the first cavity 23.

[0062] Therefore, by setting the limiting member 6, space is always left at the top of the valve cover 22 and the adjusting bracket 31 to form the first cavity 23. In addition, the flow gap 8 is connected to the space at the top of the valve cover 22 and the adjusting bracket 31 through the radially extending opening 61 of the limiting member 6, so that the water in the inlet 211 can flow smoothly into the first cavity 23.

[0063] In some embodiments, the self-standing flow control valve 100 further includes a first sleeve 5, which is sleeved on the valve core 1 and at one end of the flow gap 8 away from the first cavity 23, and the valve cover 22 is threadedly connected to the first sleeve 5.

[0064] First, a connecting sleeve 5 is fitted onto the valve core 1. The valve cover 22 has a through hole. The outer wall of the first sleeve 5 has an external thread, and the inner wall of the through hole of the valve cover 22 has an internal thread. When the valve core 1 passes through the through hole of the valve cover 22, the first sleeve 5 and the valve cover 22 are threadedly connected, so that the valve core 1 can remain stable relative to the valve cover 22.

[0065] The valve core 1 can move up and down relative to the first sleeve 5. This means that the valve core 1 can be driven to move up and down by a driving component. After adjusting the valve core 1, it can be held in a set position according to the required water flow rate from the outlet 212, and then stop moving. In addition, a first sealing ring 52 is provided between the first sleeve 5 and the valve core 1. Three first sealing rings 52 can be provided, and these three first sealing rings 52 can be arranged along the axial direction of the valve core 1 to improve the sealing performance of the connection between the valve core 1 and the first sleeve 5 and prevent water leakage.

[0066] In some embodiments, the inner wall of the first sleeve 5 is provided with a first receiving groove 51, which is used to receive lubricating oil.

[0067] Therefore, when the valve core 1 is adjusted and moved to a suitable position, the movement of the valve core 1 can cause the lubricating oil in the first receiving groove 51 to be squeezed and flowed, thereby improving the smoothness of the movement of the valve core 1. Furthermore, there is no need to set up a separate lubricating oil circuit to lubricate the gap between the valve core 1 and the first sleeve 5. Lubricating oil can be pre-set in the first receiving groove 51 to achieve lubrication of the valve core 1. The structure is simple and the design is convenient.

[0068] In some embodiments, the self-standing flow control valve 100 further includes a second sleeve 4, which is movably sleeved on the valve core 1 and fixedly connected to the regulating assembly 3. The inner wall of the second sleeve 4 is provided with a second receiving groove 43, which is used to receive lubricating oil.

[0069] Similarly, the second sleeve 4 is fixedly connected to the adjusting frame 31. The second sleeve 4 is fitted onto the outside of the valve core 1, which is equivalent to the adjusting frame 31 being fitted onto the outside of the valve core 1. That is, by setting the second sleeve 4, the adjusting frame 31 and the valve core 1 are kept in a movable connection, and the adjusting component 3 can move smoothly up and down relative to the valve core 1. The inner wall of the second sleeve 4 is also provided with a second receiving groove 43. Lubricating oil can be pre-filled in the second receiving groove 43. During the up and down movement of the adjusting frame 31, the lubricating oil in the second receiving groove 43 can be squeezed and the lubricating oil can flow between the second sleeve 4 and the valve core 1, which improves the flexibility of the movement of the adjusting component 3, that is, improves the adjustment sensitivity of the adjusting component 3, thereby improving the control accuracy.

[0070] Specifically, the second sleeve 4 includes a first section 41 and a second section 42. The outer diameter of the first section 41 is larger than the outer diameter of the second section 42. The second receiving groove 43 is provided on the inner wall of the first section 41, so that there is a gap between the first section 41 and the valve core 1 to accommodate oil. At the same time, the second section 42 and the valve core 1 are kept in a sealed connection. The end of the first section 41 away from the second section 42 is also kept in a sealed connection with the valve core 1 by providing a second sealing ring 44 to prevent water from entering the second receiving groove 43.

[0071] In some embodiments, pressure testing holes 9 are provided at both the inlet 211 and the outlet 212, and the pressure testing holes 9 are used to install pressure testers.

[0072] like Figure 1 As shown, by setting pressure measuring holes 9 at the inlet 211 and outlet 212 respectively, pressure measuring devices can be installed accordingly. For example, if the inlet 211 is open to the left, the pressure measuring hole 9 is designed vertically. At the same time, if the outlet 212 is open to the right, the pressure measuring hole 9 corresponding to the outlet is also designed vertically. This reduces the impact of installing pressure measuring devices on the inlet or outlet, making it easier to monitor the pressure values ​​at both the inlet and outlet in real time, and to monitor whether the self-standing flow control valve 100 has played a good role in flow regulation.

[0073] In addition, it should be noted that in the self-standing flow control valve 100 of this utility model embodiment, water enters from the bottom of the valve core 1, thereby reducing the precipitation of impurities under gravity and reducing the situation of scale blockage. Furthermore, the water pressure in the first chamber 23 is relatively high, which will flush away the scale and prevent large-scale deposition.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A self-supporting flow control valve, characterized in that, include: A valve body assembly, wherein the valve body assembly is provided with an inlet and an outlet; A valve core is installed inside the valve body assembly, and a communication channel is formed between the valve core and the valve body assembly, connecting the liquid inlet and the liquid outlet. An adjustment assembly is installed within the valve body assembly. The adjustment assembly includes an adjustment frame and a flexible member. The flexible member is connected between the outside of the adjustment frame and the valve body assembly and is extendable and retractable when the adjustment frame moves. The flexible member, the adjustment frame, a portion of the valve body assembly, and a portion of the valve core define a first cavity. The adjustment frame, another portion of the valve body assembly, and another portion of the valve core define a second cavity. The first chamber is connected to the liquid inlet, and the second chamber is connected to the communication channel. When the pressure in the first chamber changes, the adjusting bracket moves relative to the valve body assembly to adjust the opening of the communication channel, thereby adjusting the pressure in the second chamber and keeping the pressure difference between the second chamber and the first chamber constant.

2. The self-supporting flow control valve according to claim 1, characterized in that, The regulating assembly further includes an elastic element, which is sleeved on the valve core. The regulating frame is movably sleeved on the valve core and presses against the elastic element. When the pressure in the first chamber changes, the elastic element applies a force to the regulating assembly to adjust the size of the connecting channel, so that the pressure in the second chamber changes, while keeping the pressure difference between the first chamber and the second chamber constant.

3. The self-supporting flow control valve according to claim 1, characterized in that, The valve core includes a connected valve stem and a base. The base includes at least two circumferentially arranged throttling vanes. A liquid passage is defined between adjacent throttling vanes and the valve body assembly. The liquid passage communicates with the communication channel.

4. The self-supporting flow control valve according to claim 3, characterized in that, The valve stem is provided with a flow guiding channel, the base is provided with a first flow guiding port and the valve stem is provided with a second flow guiding port. Both the first flow guiding port and the second flow guiding port are connected to the flow guiding channel, and the first flow guiding port is connected to the liquid inlet and the second flow guiding port is connected to the first cavity.

5. The self-supporting flow control valve according to claim 4, characterized in that, The valve body assembly includes a detachably connected valve body and a valve cover. The valve core passes through the valve cover and is at least partially inserted into the valve body. The first cavity is formed between the adjusting bracket, the flexible member, and the valve cover. At least a flow gap is provided between the inner peripheral wall of the valve cover where it connects to the valve core and the outer peripheral wall of the valve core. The flow gap connects the second flow guide port to the first cavity.

6. The self-supporting flow control valve according to claim 5, characterized in that, The bottom of the valve cover is provided with a limiting member, the limiting member is provided with a through hole, when the valve core passes through the valve cover and passes through the through hole, the limiting member is also provided with a radially extending opening in the circumference, the opening is connected to the flow gap and the first cavity.

7. The self-supporting flow control valve according to claim 5, characterized in that, It also includes a first sleeve, which is sleeved on the valve core and located at the end of the flow gap away from the first cavity, and the valve cover is threadedly connected to the first sleeve.

8. The self-supporting flow control valve according to claim 7, characterized in that, The inner wall of the first sleeve is provided with a first receiving groove, which is used to receive lubricating oil.

9. The self-supporting flow control valve according to claim 1, characterized in that, It also includes a second sleeve, which is movably sleeved on the valve core and fixedly connected to the adjusting assembly. The inner wall of the second sleeve is provided with a second receiving groove for receiving lubricating oil.

10. The self-supporting flow control valve according to claim 1, characterized in that, Both the inlet and outlet are provided with pressure testing holes, which are used to install pressure gauges.

Images