Self-supporting flow control valve

Abstract

The invention 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 element 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 invention, 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] The invention relates to the field of fluid regulation, and in particular to a self-supporting flow control valve. Background Art

[0002] In the heating system, when the water flow of some users changes, such as when it is shut down or adjusted, the pressure distribution of the system will change, causing the flow of other users to change accordingly. This hydraulic imbalance is randomly changing and dynamic, which will cause abnormal phenomena such as overcooling or overheating in users at different distances from the heat source, affecting the quality of heating.

[0003] This imbalance phenomenon can only be solved by using a dynamic balancing valve, but the current dynamic valves still have complex structures and are inconvenient to adjust, leaving room for improvement. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a self-supporting flow control valve, wherein the self-supporting flow control valve adopts a valve core set at a set position of a valve body assembly to control the required water flow rate. When the pressure of the first chamber changes, the regulating assembly adjusts the opening size of the connecting channel so that the pressure of the second chamber changes accordingly, and the pressure difference between the first chamber and the second chamber is kept unchanged, that is, when the water inlet pressure changes, the water flow rate is always kept stable and unchanged, and the adjustment is convenient.

[0005] According to an embodiment of the present invention, the self-supporting flow control valve comprises: a valve body assembly, a valve core and an adjusting assembly; the valve body assembly is provided with a liquid inlet and a liquid outlet; the valve core is installed in the valve body assembly, and a communication channel connected between the liquid inlet and the liquid outlet is formed between the valve core and the valve body assembly; the adjusting assembly is installed in the valve body assembly, and the adjusting assembly is provided with an adjusting frame and a flexible member, the flexible member is connected between the outside of the adjusting frame and the valve body assembly and can be retracted when the adjusting frame moves, the flexible member, the adjusting frame and a part of the valve body assembly, and a part of the valve core define a first cavity, and the adjusting frame and another part of the valve body assembly and another part of the valve core define a second cavity; wherein the first cavity is communicated with the liquid inlet, and the second cavity is communicated with the communication channel, and when the pressure of the first cavity changes, the adjusting frame moves relative to the valve body assembly to adjust the opening of the communication 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.

[0006] According to the self-supporting flow control valve of the embodiment of the present invention, in the initial state, the valve core is installed in a fixed position of the valve body assembly according to the required water outlet flow rate, and the adjusting assembly is movable relative to the valve core. When the water inlet pressure changes, the pressure of the first chamber changes, which triggers the adjustment frame of the adjusting assembly to move, so that the adjustment frame adjusts the size of the connecting channel, so that the pressure of the second chamber also changes accordingly, but the pressure difference between the first chamber and the second chamber is always kept unchanged, so that the flow rate of the liquid outlet is maintained within the required flow rate range, and the water outlet flow rate does not change due to the change of the water inlet pressure. The structure is simple and the adjustment is convenient.

[0007] According to the self-supporting flow control valve of an embodiment of the present invention, the adjusting component also includes an elastic member, the elastic member is sleeved on the valve core, the adjusting frame is movably sleeved on the valve core and presses against the elastic member, and when the pressure in the first chamber changes, the elastic member exerts a force on the adjusting component to adjust the size of the connecting channel so that the pressure in the second chamber changes and the pressure difference between the first chamber and the second chamber is kept unchanged.

[0008] According to the self-supporting flow control valve of an embodiment of the present invention, the valve core includes a connected valve stem and a base, the base includes at least two throttle plates arranged circumferentially, and a liquid port is defined between adjacent throttle plates and the valve body assembly, and the liquid port is connected to the connecting channel.

[0009] According to the self-supporting flow control valve of an embodiment of the present invention, a guide channel is provided in the valve stem, a first guide port is provided on the base and a second guide port is provided on the valve stem, the first guide port and the second guide port are both connected to the guide channel, the first guide port is connected to the liquid inlet, and the second guide port is connected to the first cavity.

[0010] According to the self-supporting flow control valve of the embodiment of the present invention, the valve body assembly includes a detachably connected valve body and a valve cover, the valve core passes through the valve cover and at least partially penetrates into the valve body, the first cavity is formed between the adjustment frame, the flexible member and the valve cover, and a flow gap is at least partially left between the inner peripheral wall of the valve cover where the valve core is connected and the outer peripheral wall of the valve core, and the flow gap connects the second guide port with the first cavity.

[0011] According to the self-supporting flow control valve of an embodiment of the present invention, a limit member is provided at the bottom of the valve cover, and the limit member is provided with a penetration hole. The valve core is penetrated through the valve cover and penetrated through the penetration hole. The limit member is also provided with a radially extending opening in the circumference, and the opening is communicated with the flow gap and the first cavity.

[0012] The self-supporting flow control valve according to an embodiment of the present invention 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 the embodiment of the present invention, a first containing groove is provided on the inner wall of the first sleeve, and the first containing groove is used to contain lubricating oil.

[0014] According to an embodiment of the present invention, the self-supporting flow control valve further includes a second sleeve, which is movably mounted on the valve core and fixedly connected to the adjustment assembly. The inner wall of the second sleeve is provided with a second receiving groove, which is used to receive lubricating oil.

[0015] According to the self-supporting flow control valve of the embodiment of the present invention, the liquid inlet and the liquid outlet are both provided with pressure measuring holes, and the pressure measuring holes are used to install a pressure measuring device.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

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

[0019] Figure 2 Schematic diagram of the structure of the valve core of the self-supporting flow control valve according to an embodiment of the present invention;

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

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

[0022] Figure 5 Schematic diagram of the structure of the valve cover of the self-supporting flow control valve according to an embodiment of the present invention;

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

[0024] Reference numerals:

[0025] Self-supporting flow control valve 100,

[0026] Valve core 1, base 11, first guide port 111, throttle plate 112, throttle 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, adjustment assembly 3, adjustment frame 31, flexible member 311, elastic member 32, second sleeve 4, first section 41, second section 42, second accommodating groove 43, second sealing ring 44, first sleeve 5, first accommodating groove 51, first sealing ring 52, limit member 6, opening 61, through hole 62, support frame 7, horizontal support portion 71, vertical support portion 72, support ring 73, flow gap 8, pressure measuring hole 9. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference below Figure 1-Figure 6A self-supporting flow control valve 100 according to an embodiment of the present invention is described. In an initial state, the valve core 1 is installed at a fixed position of the valve body assembly 2 according to the required water outlet flow rate, and the adjustment frame 31 of the adjustment assembly 3 is movable relative to the valve core 1. When the water inlet pressure changes, the pressure of the first chamber 23 changes, and the adjustment frame 31 is triggered to move, so that the adjustment frame 31 adjusts the size of the connecting channel 213, so that the pressure of the second chamber 24 also changes accordingly, but the pressure difference between the first chamber 23 and the second chamber 24 is always kept unchanged, so that the flow rate of the liquid outlet 212 is maintained within the required flow rate range, and the water outlet flow rate does not change due to the change of the water inlet pressure. The structure is simple and the adjustment is convenient.

[0031] like Figure 1-6 As shown, a self-supporting 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] Among them, the valve body assembly 2 is provided with a liquid inlet 211 and a liquid outlet 212; the valve core 1 is installed in the valve body assembly 2, and a connecting channel 213 connecting the liquid inlet 211 and the liquid outlet 212 is formed between the valve core 1 and the valve body assembly 2; the adjusting assembly 3 is installed in the valve body assembly 2, and the adjusting assembly 3 is provided with an adjusting frame 31 and a flexible member 311, the flexible member 311 is connected between the outside of the adjusting frame 31 and the valve body assembly 2 and can be retracted when the adjusting frame 31 moves, the flexible member 311, the adjusting frame 31 and a part of the valve body assembly 2, and a part of the valve core 1 define a first cavity 23, and the adjusting frame 31 and another part of the valve body assembly 2, and another part of the valve core 1 define a second cavity 24.

[0033] Among them, 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 adjusting 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 unchanged.

[0034] In practice, the valve core 1 can be at least partially installed in the valve body assembly 2, and the connecting channel 213 between the valve core 1 and the valve body assembly 2 can be suitable for when water is supplied to the liquid inlet 211, water flows from the liquid inlet 211 to the liquid outlet 212 through the connecting channel 213, thereby supplying water to the user through the liquid outlet 212.

[0035] Specifically, the valve body assembly 2 of the embodiment of the present invention is constructed as follows: Figure 1In the case where water enters from the left side and flows out from the right side, initially, the position of the valve core 1 can be determined according to the actual required flow rate of water flowing out of the liquid outlet 212. For example, a driving member can be provided on the top of the valve core 1. After the driving member drives the valve core 1 to move to a preset position, when the self-supporting flow control valve 100 is working, the valve core 1 no longer moves. That is, the position of the valve core 1 moving up and down relative to the valve body assembly 2 is determined by the flow rate of water flowing out of the liquid outlet 212 required by the user.

[0036] In addition, the adjustment component 3 is sleeved on the valve core 1 and can move relative to the valve core 1. The adjustment component 3 includes an adjustment frame 31 and a flexible member 311. Figure 1 and Figure 3 As shown, the adjustment frame 31 can be constructed as a U-shaped structure, and the flexible member 311 is made of high-performance diaphragm and reinforced fiber material, or rubber material. The flexible member 311 flexibly connects the adjustment frame 31 and the valve body assembly 2; when the adjustment assembly 3 moves along Figure 1 During the up and down movement, the volume of the first cavity 23 can be changed due to the action of the flexible member 311 , while the adjustment component 3 can move normally and the sealing of the first cavity 23 is maintained.

[0037] The first chamber 23 is connected to the liquid inlet 211, the second chamber 24 is connected to the communication channel 213, and the communication channel 213 is connected to the liquid outlet 212. When water enters the liquid inlet 211, the water can flow to the first chamber 23 and also to the second chamber 24. For example, if the pressure of the water flowing to the first chamber 23 is P1, and the pressure P1 of the first chamber 23 is equal to the pressure of the liquid inlet, and the pressure of the water flowing to the second chamber 24 is P2, since the water flowing to the second chamber 24 is throttled, so that the pressure P2 is less than the pressure of the liquid inlet, when the liquid inlet 211 enters, the water can flow to the first chamber 23 and the second chamber 24 can also flow to the second chamber 24. When the pressure of the water entering the first chamber 23 and the second chamber 24 remains unchanged, the pressure difference P1-P2 of the water between the first chamber 23 and the second chamber 24 is a and remains unchanged, and the regulating component 3 is in a stationary state. When the pressure of the water entering the liquid inlet 211 changes, the pressure of the first chamber 23 changes, so that the regulating component 3 moves and adjusts the opening of the connecting channel 213, thereby adjusting the pressure of the second chamber 24, and further making the pressure difference between the second chamber 24 and the first chamber 23 remain unchanged, that is, when the water inlet pressure changes, the water outlet flow rate is always kept stable, and the adjustment is convenient.

[0038] If the pressure difference between the first chamber 23 and the second chamber 24 increases, but P1 is always greater than P2, which means that P1-P2 increases, the adjusting frame 31 will move downward along the valve core 1, reducing the size of the connecting channel 213 between the adjusting frame 31 and the valve body assembly 2, so that the pressure difference between the first chamber 23 and the second chamber 24 will be maintained at the previous pressure difference, thereby keeping the flow rate unchanged.

[0039] If the pressure difference between the first chamber 23 and the second chamber 24 decreases, the adjustment frame 31 can move upward along the valve core 1 to increase the size of the communication channel 213, so that the pressure difference between the first chamber 23 and the second chamber 24 is maintained at the previous pressure difference, thereby ensuring that the flow rate of the liquid outlet 212 remains unchanged and does not change due to changes in the incoming flow pressure. The setting of the flexible member 311 allows the adjustment frame 31 to move normally and maintain the sealing of the first chamber 23.

[0040] Then, the water pressure entering through the liquid inlet 211 adjusts the size of the connecting channel 213, so that the flow rate of water flowing out through the liquid outlet 212 remains unchanged, that is, the influence of the water pressure of the liquid inlet 211 on the flow rate of the liquid outlet 212 is reduced, thereby improving the user experience. The self-supporting flow control valve 100 of the embodiment of the present invention is easy to adjust and has a simple structure.

[0041] In some embodiments, the self-supporting flow control valve 100 also includes an elastic member 32, which is sleeved on the valve core 1, and the adjustment frame 31 is movably sleeved on the valve core 1 and pressed against the elastic member 32. When the pressure in the first chamber 23 changes, the elastic member 32 exerts force on the adjustment component 3 to adjust the size of the connecting channel 213, so that the pressure in the second chamber 24 changes, and the pressure difference between the first chamber 23 and the second chamber 24 is kept unchanged.

[0042] Reference Figure 1 As shown, the elastic member 32 is a spring, which is sleeved on the outer periphery of the valve core 1 and located in the valve body assembly 2. The adjusting frame 31 is located in the valve body assembly 2. The adjusting frame 31 is sleeved and connected to the outer periphery of the valve core 1 and presses against the spring. The adjusting frame 31 can move relative to the valve core 1. Initially, the adjusting frame 31 squeezes the spring, and the water in the liquid inlet 211 flows to the first chamber 23 and the second chamber 24 at the same time. For example, the valve body assembly 2 may include a connected valve body 21 and a valve cover 22, and 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 a space formed by the flexible member 311, the adjusting frame 31 and the valve cover 22. The second cavity 24 is a space formed by the adjusting frame 31, the valve core 1 and the valve body 21. When the water pressure at the liquid inlet 211 changes, the amount of compression of the spring also changes.

[0043] For example, when the pressure P1 of the first chamber 23 is greater than the pressure P2 of the second chamber 24, and the pressure difference is P1-P2, the spring is compressed by an amount b1, and the regulating assembly 3 is in a stationary state; when the inlet pressure increases, the pressure difference P1-P2 increases, that is, the pressure difference increases, the spring is further compressed, and the regulating frame 31 moves downward, so that the regulating frame 31 reduces 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 regulating assembly 3 is stationary.

[0044] When the pressure of the first chamber 23 decreases, the pressure difference P1-P2 decreases, and the spring is reset, so that the adjustment assembly 3 moves upward, so that the adjustment frame 31 moves upward, and at this time the connecting channel 213 becomes larger. Therefore, a large water inlet pressure corresponds to a smaller connecting channel 213, and a small water inlet pressure corresponds to a larger connecting channel 213, and finally the flow rate of water flowing out of the liquid outlet 212 remains stable, that is, the flow rate of water at the liquid outlet 212 does not change due to the change of the water inlet 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 throttle plates 112 , and a liquid port is defined between adjacent throttle plates 112 and the valve body assembly 2 , and the liquid port is connected to the connecting channel 213 .

[0046] Reference Figure 2 As shown, the base 11 of the valve core 1 is disc-shaped, and a plurality of throttle plates 112 are arranged around the disc. Each throttle plate 112 is similar to an inverted triangle. A throttle channel 113 is left between adjacent triangular throttle plates 112, and a liquid port is defined between the throttle channel 113 between adjacent triangular throttle plates 112 and the valve body assembly 2. Moreover, the throttle channel 113 is mainly divided into a three-section structure, such as the first section is the area between the square cross-sections at the lower parts of two adjacent throttle plates 112, the second section is the area formed between the hypotenuses between adjacent triangles, and the third section is the area between the tops of adjacent throttle plates 112. By setting the cross-section of the throttle channel 113 formed by adjacent throttle plates 112 to a three-section design, it can be ensured that the flow characteristic of the dynamic flow balancing valve is an equal percentage characteristic. The equal percentage characteristic means that the flow change percentage of the regulating valve is equal within the full stroke, that is, the relative flow change caused by the unit relative stroke change is proportional to the relative flow at this point. This characteristic makes the valve amplification factor small and the adjustment smooth and gentle when the opening is small; the amplification factor is large and the adjustment is sensitive and effective when the opening is large. The equal percentage flow characteristic is conducive to the operation of the adjustment system, especially under heavy load conditions, and can provide more effective adjustment. That is, as the stroke of the valve core 1 gradually increases, the increase percentage of the flow is constant. The stroke of the valve core 1, that is, when the valve core 1 initially moves, needs to set the distance between the valve core 1 and the valve seat 214 along the height of the valve core 1, and the stroke of the valve core 1 movement.

[0047] In addition, the valve body assembly 2 is provided with a communication port 2141, and two adjacent throttle plates 112 of the valve core 1 are located above the communication port 2141, and the throttle plates 112 are partially located in the communication port 2141, that is, a liquid passage is defined between the two adjacent throttle plates 112 and the valve body assembly 2 at the communication port 2141; then, when water flows from the liquid inlet 211 to the first chamber 23, the first chamber 23 is located at the upper part of the water flow direction, and as the water flow gradually increases, static pressure is generated, that is, the pressure of the first chamber 23 and the liquid inlet 211 is the same, and at the same time, the water flow also passes through the adjacent After throttling by the throttling channel 113 between the triangular throttling pieces 112, the water flows to the second chamber 24 through the liquid port. Due to the action of the triangular throttling piece 112, the water pressure at the liquid inlet 211 is different from the water pressure at the second chamber 24. When the pressure at the liquid inlet 211 is P1, the pressure flowing to the first chamber 23 is also P1. The adjacent triangular throttling pieces 112 change the flow area in the left and right directions, and 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 liquid inlet 211 changes, the regulating frame 31 moves to adjust the pressure of the second chamber 24, so that the pressure difference between the second chamber 24 and the first chamber 23 remains unchanged. The movement of the regulating frame 31 is equivalent to changing the pressure of water flowing to the second chamber 24, that is, flowing to the liquid outlet 212, which is equivalent to changing the pressure of the water flowing to the second chamber 24 accordingly when the water pressure at the liquid inlet 211 changes, so that the water flow rate of the liquid inlet 211 and the water flow rate out of the liquid outlet 212 are balanced, so that the water flow rate out of the liquid outlet 212 is always kept within the set range.

[0049] In some embodiments, a guide channel is provided in the valve stem 12, the base 11 is provided with a first guide port 111 and the valve stem 12 is provided with a second guide port 121, the first guide port 111 and the second guide port 121 are both connected to the guide channel, and the first guide port 111 is connected to the liquid inlet 211, and the second guide 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 Figure 1 The left side is open, and the liquid outlet 212 is located on the right side of the valve core 1 and the regulating component 3 and faces Figure 1The right side of the valve core 1 is open. When water flows in from the liquid inlet 211, as water is continuously injected and the water level rises, water can flow into the guide channel along the first guide port 111 of the base 11 of the valve core 1, and flow from the guide channel to the second guide port 121, and flow from the second guide port 121 to the first chamber 23; that is, the water pressure of the first chamber 23 is the same as the pressure of the water inlet, and at the same time, the water flows into the second chamber 24 through the liquid port formed between the adjacent throttle plates 112 of the valve core 1 and the valve body assembly 2, that is, the space formed by the regulating frame 31, the valve core 1 and the valve body 21. When the water inlet pressure remains unchanged, the pressure of the first chamber 23 and the second chamber 24 remains unchanged. When the water pressure entering the liquid inlet 211 changes, the pressure of the first chamber 23 also changes accordingly, thereby changing the position of the regulating assembly 3, that is, changing the size of the connecting channel 213, and keeping the water flow rate unchanged.

[0051] Then, the guide channel is set inside the valve core 1, which saves the space for setting the guide channel in the valve body assembly 2, and realizes the communication with the first chamber 23, with a higher degree of integration. The water in the guide channel is basically dead water, and basically no impurities are brought in; and there will be no scale blockage in the process of water flowing from bottom to top; and because the pressure P1 of the first chamber is relatively large, the scale will also be washed away and will not be deposited in large quantities; in addition, the second guide port 121 is set on the upper side of the valve core 1, and impurities are difficult to enter the second guide port 121 under the action of gravity.

[0052] Moreover, the first guide port 111 of the guide channel is opposite to the connecting port 2141, and the connecting port 2141 is relative 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, and the water inlet is smoother, which improves the accuracy of the adjustment 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 a valve cover 22, the valve core 1 passes through the valve cover 22 and at least partially penetrates 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 a flow gap 8 is at least partially left between the inner peripheral wall of the valve cover 22 where the valve core 1 is connected and the outer peripheral wall of the valve core 1, and the flow gap 8 connects 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 adjusting component 3 is installed on the valve core 1, and the valve core 1 with the adjusting component 3 installed is installed in the valve body 21, and then the valve cover 22 is connected to the valve body 21 and the valve core 1, so as to realize the installation of the self-supporting flow control valve 100. By setting the self-supporting flow control valve 100 in a manner in which the valve cover 22 and the valve body 21 are detachably connected, the convenience of installing the internal structure can be improved.

[0055] The first cavity 23 is formed between the adjusting frame 31 of the adjusting assembly 3, the flexible member 311 and the valve cover 22. 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 and the top of the adjusting frame 31 and the valve cover 22, and the first cavity 23 is connected to the second guide port 121 of the valve core 1, that is, the combination Figure 1 and Figure 3 As shown, water enters the flow guide channel of the valve core 1, and flows to the flow gap 8 through the second flow guide port 121, and flows from the flow gap 8 to the first chamber 23, thereby achieving communication between the liquid inlet 211 and the first chamber 23. Therefore, 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 at the liquid inlet 211 to flow smoothly into the first chamber 23.

[0056] In addition, it should be noted that a valve seat 214 is further provided in the valve body 21 of the embodiment of the present invention. The valve seat 214 is located between the liquid inlet 211 and the liquid outlet 212, and the connecting port 2141 is provided at the valve seat 214. The size of the connecting channel 213 is determined by adjusting the distance between the adjusting component 3 and the valve seat 214. Therefore, when the liquid flowing from the liquid inlet 211 to the connecting port 2141 flows to the liquid outlet 212, a part of the water is blocked by the bottom of the adjusting component 3. Therefore, by making the adjusting component 3 close to or 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 transverse support portion 71, a vertical support portion 72 and a support ring 73. The transverse support portion 71 is sleeved on the valve core 1, and one end of the vertical support portion 72 is connected to the transverse support portion 71 and the other end is connected to the support ring 73.

[0058] The support ring 73 can be stuck in the valve seat 214, such as the valve seat 214 is provided with a groove matching the size of the support ring 73, so that the support frame 7 is connected to the valve body 21. In addition, the base 11 of the valve core 1 and the triangular throttle plate 112 are located on the side of the transverse support portion 71 close to the support ring 73, that is, the valve core 1 can move up and down relative to the support frame 7 to adjust the flow of the appropriate liquid outlet 212, and the support frame 7 mainly supports and guides the bottom of the valve core 1, so that the stability of the valve core 1 is higher. Then, when the corresponding adjustment component 3 is sleeved on the outside of the valve core 1 and can move up and down relative to the valve core 1, the stability of the adjustment component 3 can be improved, thereby improving the accuracy of the adjustment component 3 in adjusting the size of the connecting channel 213, so that the flow of the liquid outlet 212 remains stable.

[0059] Moreover, a gasket 215 is provided on the top of the adjustment frame 31 , that is, the gasket 215 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 , thereby ensuring the reliability of the connection of the flexible member 311 .

[0060] In some embodiments, a limit member 6 is provided at the bottom of the valve cover 22, and the limit member 6 is provided with a penetration hole 62. When the valve core 1 penetrates the valve cover 22, it is penetrated in the penetration hole 62. A radially extending opening 61 is also provided in the circumference of the limit member 6. The opening 61 is connected to the flow gap 8 and to the first chamber 23.

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

[0062] Therefore, by setting the limit member 6, firstly, a space is always left at the top of the valve cover 22 and the adjusting frame 31 to form the first chamber 23. In addition, the flow gap 8 is connected to the space at the top of the valve cover 22 and the adjusting frame 31 through the opening 61 radially extending from the limit member 6, that is, the water at the liquid inlet 211 can flow smoothly into the first chamber 23.

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

[0064] First, the first sleeve 5 is sleeved and connected on the valve core 1, the valve cover 22 is provided with a through hole, the outer wall of the first sleeve 5 is provided with an external thread, and the inner wall of the through hole of the valve cover 22 is provided with 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 compared to the first sleeve 5, that is, the valve core 1 can be driven up and down by the driving member. After the valve core 1 is adjusted, the valve core 1 is kept at a set position according to the required water flow rate flowing out of the liquid outlet 212, and the valve core 1 does not move anymore. 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 the three first sealing rings 52 can be provided 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 to prevent water leakage.

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

[0067] Then, when the valve core 1 is adjusted and moved to a suitable position, the lubricating oil in the first receiving groove 51 can be squeezed and flowed due to the movement of the valve core 1, thereby improving the smoothness of the movement of the valve core 1. There is no need to set up an additional lubricating oil circuit to lubricate the gap between the valve core 1 and the first sleeve 5. It is sufficient to set the lubricating oil in the first receiving groove 51 in advance to achieve lubrication of the valve core 1. The structure is simple and the design is convenient.

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

[0069] Similarly, the second sleeve 4 is fixedly connected to the adjustment frame 31, and the second sleeve 4 is sleeved on the outside of the valve core 1, which is equivalent to the adjustment frame 31 being sleeved on the outside of the valve core 1. That is, by setting the second sleeve 4, the adjustment frame 31 and the valve core 1 are kept in active connection, and the adjustment component 3 can move up and down smoothly relative to the valve core 1. The inner wall of the second sleeve 4 is also provided with a second receiving groove 43, and lubricating oil can be pre-set in the second receiving groove 43. During the up and down movement of the adjustment frame 31, the lubricating oil in the second receiving groove 43 can be squeezed and made to flow between the second sleeve 4 and the valve core 1, thereby improving the flexibility of the movement of the adjustment component 3, that is, improving the adjustment sensitivity of the adjustment 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 arranged on the inner wall of the first section 41, so that a gap for accommodating oil can be left between the first section 41 and the valve core 1. At the same time, the second section 42 and the valve core 1 maintain a sealed connection. The end of the first section 41 away from the second section 42 is also sealed with the valve core 1 by setting a second sealing ring 44 to prevent water from entering the second receiving groove 43.

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

[0072] like Figure 1 As shown, by respectively arranging pressure measuring holes 9 at the liquid inlet 211 and the liquid outlet 212, pressure measuring devices can be installed corresponding to each of them. For example, the liquid inlet 211 is open toward the left side, and the pressure measuring hole 9 is designed vertically. Meanwhile, the liquid outlet 212 is open toward the right side, and the pressure measuring hole 9 corresponding to the liquid outlet is also designed vertically, thereby reducing the influence of the installation of the pressure measuring device on the liquid inlet or outlet. This makes it easy to monitor the pressure values ​​at both ends of the liquid inlet and the liquid outlet in real time, and monitor whether the self-supporting flow control valve 100 plays a good role in flow regulation.

[0073] In addition, it should be noted that in the self-supporting flow control valve 100 of the embodiment of the present invention, water enters from the bottom of the valve core 1, thereby reducing the precipitation of impurities under the action of gravity and reducing the clogging of scale. The water pressure in the first chamber 23 is relatively large, which will wash away the scale and prevent it from being deposited in large quantities.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention 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 a liquid inlet and a liquid outlet; A valve core, the valve core is installed in the valve body assembly, and a communication channel communicating between the liquid inlet and the liquid outlet is formed between the valve core and the valve body assembly; An adjusting assembly, the adjusting assembly is installed in the valve body assembly, the adjusting assembly includes an adjusting frame and a flexible member, the flexible member is connected between the outside of the adjusting frame and the valve body assembly and is 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 chamber is communicated with the liquid inlet, and the second chamber is communicated with the connecting channel. When the pressure of the first chamber changes, the adjusting frame moves relative to the valve body assembly to adjust the opening of the connecting channel, so as to adjust the pressure of the second chamber and keep the pressure difference between the second chamber and the first chamber unchanged.

2. The self-supporting flow control valve according to claim 1, characterized in that: The adjusting component also includes an elastic member, which is sleeved on the valve core. The adjusting frame is movably sleeved on the valve core and presses against the elastic member. When the pressure in the first chamber changes, the elastic member exerts a force on the adjusting component to adjust the size of the connecting channel so that the pressure in the second chamber changes and the pressure difference between the first chamber and the second chamber is kept unchanged.

3. The self-supporting flow control valve according to claim 1, characterized in that: The valve core includes a valve stem and a base connected to each other. The base includes at least two throttle plates arranged circumferentially. Liquid ports are defined between adjacent throttle plates and the valve body assembly. The liquid ports are communicated with the communication channel.

4. The self-supporting flow control valve according to claim 3, characterized in that: A guide channel is provided in the valve stem, a first guide port is provided in the base and a second guide port is provided in the valve stem, the first guide port and the second guide port are both connected to the guide channel, the first guide port is connected to the liquid inlet, and the second guide 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 at least partially penetrates into the valve body, the first cavity is formed between the adjustment frame, the flexible member and the valve cover, and a flow gap is at least partially left between the inner peripheral wall of the valve cover where the valve core is connected and the outer peripheral wall of the valve core, and the flow gap connects the second guide port with the first cavity.

6. The self-supporting flow control valve according to claim 5, characterized in that: A limit piece is provided at the bottom of the valve cover, and the limit piece is provided with a penetration hole. When the valve core is penetrated through the valve cover, it is penetrated through the penetration hole. The limit piece is also provided with a radially extending opening in the circumference, and the opening is communicated with 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 at one end of the flow gap away from the first chamber, 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 containing groove, and the first containing groove is used for containing 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 adjustment component. The inner wall of the second sleeve is provided with a second receiving groove, and the second receiving groove is used to receive lubricating oil.

10. The self-supporting flow control valve according to claim 1, characterized in that: The liquid inlet and the liquid outlet are both provided with pressure measuring holes, and the pressure measuring holes are used to install a pressure measuring device.

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