Dynamic circulating valve

Abstract

The utility model provides a dynamic circulating valve which comprises a valve body and a valve element assembly. The lower end of the valve body forms a water inlet, and the upper end of the valve body forms a water outlet; the side wall of the valve body is provided with a circulating water discharge port and a circulating water backflow port, the circulating water discharge port and the circulating water backflow port are distributed at intervals in the direction of water flowing through the valve body, the circulating water discharge port is connected with one end of a circulating water pipeline, the circulating water backflow port is connected with the other end of the circulating water pipeline, and the circulating water pipeline is provided with a water outlet valve; the valve core assembly is arranged in the valve body between the circulating water discharge port and the circulating water backflow port; when water flows through the valve element assembly, the valve element assembly is used for changing the water flow velocity in the valve body so that the water flow velocity on the water outlet end side of the valve element assembly can be larger than the water flow velocity on the water inlet end side of the valve element assembly. According to the utility model, a stagnant water area can be prevented from being generated in the circulating water pipeline, namely bacteria breeding in the circulating water pipeline can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of water valve technology, and more specifically, to a dynamic circulation valve. Background Technology

[0002] In domestic water supply pipeline systems, when there is no water flow in the pipeline for a long time, stagnant water areas will form in the pipeline. When the pipeline is not used for a long time, bacteria can easily grow in the stagnant water areas, corroding the pipeline. Moreover, people who use stagnant water that has not flowed for a long time can easily cause harm to their health. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a dynamic circulation valve that can prevent the formation of stagnant water areas in the circulating water pipe, that is, to prevent the growth of bacteria in the circulating water pipe.

[0004] This utility model provides a dynamic circulation valve, including a valve body and a valve core assembly; the lower end of the valve body forms an inlet, and the upper end of the valve body forms an outlet; the side wall of the valve body is provided with a circulating water outlet and a circulating water return outlet, which are distributed at intervals along the direction of water flow through the valve body; the circulating water outlet is connected to one end of a circulating water pipe, and the circulating water return outlet is connected to the other end of the circulating water pipe; an outlet valve is installed on the circulating water pipe; the valve core assembly is installed inside the valve body located between the circulating water outlet and the circulating water return outlet; when water flows through the valve core assembly, the valve core assembly is used to change the water flow velocity in the valve body so that the water flow velocity on the outlet side of the valve core assembly is greater than the water flow velocity on the inlet side of the valve core assembly.

[0005] By adopting the above structure, when a water appliance connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, and the valve core assembly changes the water flow velocity in the valve body so that the water flow velocity on the outlet side of the valve core assembly is greater than the water flow velocity on the inlet side of the valve core assembly, a Venturi effect will be generated at the outlet of the valve core assembly. That is, a pressure difference will be generated between the circulating water outlet and the circulating water return port. This allows the water in the valve body to flow back into the valve body after passing through the circulating water outlet, the circulating water pipe and the circulating water return port in sequence. That is, even when the outlet valve on the circulating water pipe is not opened, the water in the circulating water pipe can still flow, avoiding the formation of stagnant water areas in the circulating water pipe, thus preventing the growth of bacteria in the circulating water pipe and avoiding any impact on the user's health.

[0006] In one possible implementation, the circulating water return port is located near the outlet end of the valve core assembly. With this structure, when a water appliance connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, and the valve core assembly changes the water flow velocity in the valve body so that the water flow velocity on the outlet side of the valve core assembly is greater than the water flow velocity on the inlet side of the valve core assembly, a Venturi effect will occur at the outlet end of the valve core assembly. Since the circulating water return port is close to the outlet end of the valve core assembly, the water pressure at the circulating water return port can be reliably reduced, thereby facilitating the water in the valve body to flow back into the valve body after sequentially passing through the circulating water outlet, the circulating water pipe, and the circulating water return port (a pressure difference is generated between the circulating water outlet and the circulating water return port). That is, even when the outlet valve on the circulating water pipe is not opened, the water in the circulating water pipe can still flow, avoiding the formation of stagnant water areas in the circulating water pipe, which can prevent the growth of bacteria in the circulating water pipe.

[0007] In one possible implementation, the inner wall of the connection between the circulating water return port and the valve body forms an arc-shaped transition section, with one end of the transition section bent away from the valve core assembly. With this structure, when a water appliance connected to the outlet of the valve body uses water to flow through the valve core assembly, and the valve core assembly regulates the water flow velocity, a Venturi effect is generated at the outlet of the valve core assembly. Due to the pressure difference between the circulating water outlet and the circulating water return port, the water in the valve body flows back to the valve body after sequentially passing through the circulating water outlet, the circulating water pipe, and the circulating water return port. The arc-shaped transition section facilitates a smoother return of water from the circulating water pipe to the valve body, thereby improving the flow efficiency and effectiveness of the water in the circulating water pipe.

[0008] In one possible implementation, an annular boss extending inward along the radial direction of the valve body is provided on the inner wall of the valve body, and the water inlet end of the valve core assembly abuts against the annular boss; by adopting this structure, the valve core assembly can reliably abut against the annular boss, that is, the valve core assembly can be reliably installed inside the valve body.

[0009] In one possible implementation, an annular constriction is formed on the inner wall of the lower end of the annular boss, and the diameter of the annular constriction gradually decreases along the direction of water flow through the valve body. With this structure, when a water appliance connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, the flow velocity of the water can be changed in advance under the action of the annular constriction, so that the flow velocity of the water flowing through the annular constriction is increased in advance. As a result, when the water flows through the valve body assembly, the valve body assembly can further effectively increase the flow velocity of the water, so that the Venturi effect generated at the outlet of the valve core assembly is more obvious. This allows the water in the valve body to more reliably flow through the circulating water outlet, the circulating water pipe and the circulating water return port in sequence before returning to the valve body. This can improve the flow efficiency and effect of the water in the circulating water pipe, further avoid the formation of stagnant water areas in the circulating water pipe, and prevent the growth of bacteria in the circulating water pipe.

[0010] In one possible implementation, the valve core assembly includes a connecting ring, a connecting seat, a valve core, and a spring. The lower end of the connecting ring is supported on an annular boss, and the outer wall of the connecting ring is circumferentially sealed to the inner wall of the valve body. The lower end of the connecting seat is fixed to the upper end of the connecting ring. The valve core is disposed inside the connecting seat. Several support blocks are circumferentially arranged on the inner wall of the connecting ring. The support blocks abut against the lower end of the valve core to form a water passage gap between the valve core and the connecting ring. The two ends of the spring abut against the upper end of the valve core and the inner top of the connecting seat, respectively. The spring applies a spring force to the valve core, causing it to move downward. A water outlet is vertically arranged in the middle of the connecting seat. By using this valve core assembly, when connected to... When water is supplied to the water appliance downstream of the valve body's outlet, and the water flows through the valve core assembly, under low water flow conditions, the water can flow through the water passage gap and out through the outlet hole on the connector. Under high water flow conditions, the water can gradually push the valve core (at which point the spring is compressed) to increase the water flow at the outlet end of the valve body. In addition, since the inner diameter of the water passage gap and the inner diameter of the outlet hole are smaller than the inner diameter of the valve body, when the water flows through the valve core assembly, the valve core assembly can change the water flow velocity in the valve body so that the water flow velocity on the outlet side of the valve core assembly is greater than the water flow velocity on the inlet side of the valve core assembly, thereby generating a Venturi effect at the outlet end of the valve core assembly.

[0011] In one possible implementation, the valve core is provided with several water passage holes in the circumferential direction, and each water passage hole penetrates the valve core axially. By providing water passage holes on the valve core, when a water-using device connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, when the water flow is small, the water flow can simultaneously flow through the water passage gap and several water passage holes and flow out from the outlet hole on the connecting seat. That is, as the water flow increases, the opening of the valve core can be delayed, thereby increasing the opening threshold of the valve core. In turn, under low water flow conditions, the flow velocity of the water discharged from the outlet end of the valve core assembly can be increased as much as possible, so that the Venturi effect generated at the outlet end of the valve core assembly is more obvious.

[0012] In one possible implementation, a valve stem is coaxially mounted on the upper end of the valve core, and the valve stem movably passes through the water outlet hole and is in clearance fit with the water outlet hole. Several support plates are circumferentially arranged on the outer wall of the valve stem, each support plate extending along the axial direction of the valve stem, and each support plate abutting against the inner wall of the water outlet hole and slidingly fitting with the water outlet hole. With this structure, when the water flow rate through the valve core assembly changes and drives the valve core to move up and down, the valve stem and the support plates on the outer wall of the valve stem sliding with the inner wall of the water outlet hole can guide the up and down movement of the valve core, making the up and down movement of the valve core smoother. In addition, a water passage is formed between every two adjacent support plates and the water outlet hole to facilitate the flow of water through the water passage.

[0013] In one possible implementation, an inverted cone-shaped structure is formed at the outer edge of the lower end of the valve core. With this structure, as the water flows from the inlet end of the valve core assembly to the outlet end of the valve core assembly, the inverted cone-shaped structure formed at the outer edge of the lower end of the valve core can guide the water flow, so that the water flows more smoothly through the water passage gap and the valve core assembly.

[0014] In one possible implementation, an annular step is provided on the outer wall of the lower end of the connecting ring, and a sealing ring is embedded in the annular step. The sealing ring is tightly sealed to the side wall of the annular step and the inner wall of the valve body. With this structure, the outer wall of the connecting ring can reliably achieve circumferential sealing with the inner wall of the valve body through the sealing ring, that is, the outer wall of the valve core assembly can reliably achieve circumferential sealing with the inner wall of the valve body through the sealing ring.

[0015] In one possible implementation, the lower end of the connector is inserted into the upper end of the connector ring. An annular groove is provided on the outer wall of the lower end of the connector, and an annular rib is provided on the inner wall of the upper end of the connector ring. The annular rib is embedded in the annular groove to fasten the connector and the connector ring. With this structure, the lower end of the connector can be reliably fastened to the upper end of the connector ring by the interlocking action of the annular rib and the annular groove, thus easily achieving the fastening of the lower end of the connector and the upper end of the connector ring.

[0016] In one possible implementation, the outer wall of the connector is provided with a number of circumferentially spaced locking blocks, and the inner wall of the valve body is provided with an annular locking groove. The locking blocks engage with the annular locking groove to lock the valve core assembly and the valve body. With this structure, the valve core assembly can be reliably locked together with the valve body by the engaging action of the locking blocks and the annular locking groove. Attached Figure Description

[0017] Figure 1 is a cross-sectional structural diagram of this utility model;

[0018] Figure 2 This is an enlarged structural diagram of point A in Figure 1;

[0019] Figure 3 This is a top view of the valve core of the first type.

[0020] Figure 4 This is a top view of the valve core structure of the second type. Detailed Implementation

[0021] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0022] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0023] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Referring to Figures 1-4, this application discloses a dynamic circulation valve, including a valve body 1 and a valve core assembly 2; the lower end of the valve body 1 forms an inlet 11, and the upper end of the valve body 1 forms an outlet 12; a circulating water outlet 13 and a circulating water return outlet 14 are provided on the side wall of the valve body 1, and the circulating water outlet 13 and the circulating water return outlet 14 are distributed at intervals along the direction of water flow through the valve body 1; the circulating water outlet 13 is connected to one end of the circulating water pipe 3, and the circulating water return outlet 14 is connected to the circulating water... The other end of the pipe 3 is connected to a water outlet valve installed on the circulating water pipe 3; the valve core assembly 2 is installed inside the valve body 1 located between the circulating water outlet 13 and the circulating water return port 14; when water flows through the valve core assembly 2, the valve core assembly 2 is used to change the water flow velocity in the valve body 1 so that the water flow velocity on the side of the outlet end of the valve core assembly 2 is greater than the water flow velocity on the side of the inlet end of the valve core assembly 2; the water outlet valve connected to the circulating water pipe can be an angle valve, a faucet, or other valve body types.

[0026] The circulating water return port 14 is located near the outlet end of the valve core assembly 2. With this structure, when a water-using device connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, and the valve core assembly changes the water flow velocity in the valve body so that the water flow velocity on the outlet side of the valve core assembly is greater than the water flow velocity on the inlet side of the valve core assembly, a Venturi effect will be generated at the outlet end of the valve core assembly. Since the circulating water return port is close to the outlet end of the valve core assembly, the water pressure at the circulating water return port can be reliably reduced, which facilitates the water in the valve body to flow back to the valve body after passing through the circulating water outlet, the circulating water pipe and the circulating water return port in sequence (a pressure difference is generated between the circulating water outlet and the circulating water return port). That is, even when the outlet valve on the circulating water pipe is not opened, the water in the circulating water pipe can still flow, avoiding the formation of stagnant water areas in the circulating water pipe, which can prevent the growth of bacteria in the circulating water pipe.

[0027] The inner wall of the connection between the circulating water return port 14 and the valve body 1 forms an arc-shaped transition section 141. The end of the transition section 141 connected to the valve body 1 bends away from the valve core assembly 2. With this structure, when a water appliance connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, and the valve core assembly regulates the water flow rate, a Venturi effect is generated at the outlet of the valve core assembly. Due to the pressure difference between the circulating water outlet and the circulating water return port, the water in the valve body flows back to the valve body after passing through the circulating water outlet, the circulating water pipe and the circulating water return port in sequence. Under the action of the arc-shaped transition section, the water in the circulating water pipe can flow back to the valve body more smoothly, thereby improving the flow efficiency and effect of the water in the circulating water pipe.

[0028] An annular boss 15 extending inward along the radial direction of the valve body 1 is provided on the inner wall of the valve body 1, and the water inlet end of the valve core assembly 2 abuts against the annular boss 15. With this structure, the valve core assembly can reliably abut against the annular boss, that is, the valve core assembly can be reliably installed inside the valve body.

[0029] An annular constriction 151 is formed on the inner wall of the lower end of the annular boss 15. The diameter of the annular constriction 151 gradually decreases along the direction of water flow through the valve body 1. With this structure, when a water-using device connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, the flow velocity of the water can be changed in advance under the action of the annular constriction. This means that the flow velocity of the water flowing through the annular constriction is increased in advance. As a result, when the water flows through the valve body assembly, the valve body assembly can further and effectively increase the flow velocity of the water, so that the Venturi effect generated at the outlet of the valve core assembly is more obvious. This allows the water in the valve body to flow more reliably through the circulating water outlet, the circulating water pipe and the circulating water return port before returning to the valve body. This can improve the flow efficiency and effect of the water in the circulating water pipe, further avoid the formation of stagnant water areas in the circulating water pipe and prevent the growth of bacteria in the circulating water pipe.

[0030] The valve core assembly 2 includes a connecting ring 21, a connecting seat 22, a valve core 23, and a spring 24. The lower end of the connecting ring 21 is supported on an annular boss 15. The outer wall of the connecting ring 21 is circumferentially sealed to the inner wall of the valve body 1. The lower end of the connecting seat 22 is fixed to the upper end of the connecting ring 21. The valve core 23 is disposed inside the connecting seat 22. Several support blocks 211 are circumferentially arranged on the inner wall of the connecting ring 21. The support blocks 211 are used to abut against the lower end of the valve core 23 to form a water passage gap 25 between the valve core 23 and the connecting ring 21. The two ends of the spring 24 abut against the upper end of the valve core 23 and the inner top of the connecting seat 22, respectively. The spring 24 is used to apply a spring force to the valve core 23 to drive it to move downward. A vertical outlet is provided in the middle of the connecting seat 22. Water hole 221; By adopting this valve core assembly, when a water-using device connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, when the water flow is small, the water flow can flow through the water passage gap and out of the water outlet on the connecting seat. When the water flow is large, the water flow can gradually push the valve core (at this time the spring is compressed) to increase the water flow at the outlet end of the valve body. In addition, since the inner diameter of the water passage gap and the inner diameter of the water outlet are smaller than the inner diameter of the valve body, when the water flows through the valve core assembly, the valve core assembly can change the water flow velocity in the valve body so that the water flow velocity on the outlet end side of the valve core assembly is greater than the water flow velocity on the inlet end side of the valve core assembly, thereby generating a Venturi effect at the outlet end of the valve core assembly.

[0031] The valve core 23 is provided with several water passage holes 231 in the circumferential direction, and each water passage hole 231 axially penetrates the valve core 23. After the water passage holes are provided on the valve core, when the water appliance connected to the outlet of the valve body uses water to make the water flow through the valve core assembly, when the water flow is small, the water flow can flow through the water passage gap and several water passage holes at the same time and flow out from the outlet hole on the connecting seat. That is, when the water flow increases, the opening of the valve core can be delayed, thereby increasing the opening threshold of the valve core. In this way, under low water flow conditions, the flow velocity of the water discharged from the outlet end of the valve core assembly can be increased as much as possible, so that the Venturi effect generated at the outlet end of the valve core assembly is more obvious.

[0032] like Figure 3 As shown, in Figure 3 In the valve core, several water passages are round holes, and these holes are spaced apart along the circumferential direction; for example... Figure 4 As shown, in Figure 4 In this valve, several water passages are oblong-shaped holes, and these holes are spaced apart along the circumferential direction of the valve core; in addition, the shape of the aforementioned water passages can also be other shapes.

[0033] A valve stem 232 is coaxially mounted on the upper end of the valve core 23. The valve stem 232 is movably inserted into the water outlet 221 and is clearance-fitted with the water outlet 221. Several support plates 233 are circumferentially arranged on the outer wall of the valve stem 232. Each support plate 233 extends along the axial direction of the valve stem 232 and abuts against the inner wall of the water outlet 221 and slides with the water outlet 221. With this structure, when the water flow rate through the valve core assembly changes and drives the valve core to move up and down, the valve stem and the support plates on the outer wall of the valve stem slide with the inner wall of the water outlet, which guides the up and down movement of the valve core, making the up and down movement of the valve core smoother. In addition, a water passage is formed between each pair of adjacent support plates and the water outlet to facilitate the flow of water through the water passage.

[0034] An inverted cone shape is formed at the outer edge of the lower end of the valve core 23. With this structure, the inverted cone shape formed at the outer edge of the lower end of the valve core can guide the water flow as it flows from the inlet end of the valve core assembly to the outlet end of the valve core assembly, so that the water flow can pass through the water passage gap and the valve core assembly more smoothly.

[0035] An annular step 211 is provided on the outer wall of the lower end of the connecting ring 21. A sealing ring 26 is embedded in the annular step 211. The sealing ring 26 is tightly sealed to the side wall of the annular step 211 and the inner wall of the valve body 1. With this structure, the outer wall of the connecting ring can reliably achieve circumferential sealing with the inner wall of the valve body through the sealing ring. That is, the outer wall of the valve core assembly can reliably achieve circumferential sealing with the inner wall of the valve body through the sealing ring.

[0036] The lower end of the connecting seat 22 is inserted into the upper end of the connecting ring 21. An annular groove 222 is provided on the outer wall of the lower end of the connecting seat 22, and an annular rib 212 is provided on the inner wall of the upper end of the connecting ring 21. The annular rib 212 is embedded in the annular groove 222 to fasten the connecting seat 22 and the connecting ring 21. With this structure, the lower end of the connecting seat can be reliably fastened to the upper end of the connecting ring by the interlocking action of the annular rib and the annular groove, which can conveniently achieve the fastening of the lower end of the connecting seat and the upper end of the connecting ring.

[0037] The outer wall of the connecting seat 22 is provided with several circumferentially spaced locking blocks 223, and the inner wall of the valve body 1 is provided with an annular locking groove 16. The locking blocks 223 are engaged with the annular locking groove 16 to lock the valve core assembly 2 and the valve body 1. With this structure, the valve core assembly can be reliably locked with the valve body by the engagement of the locking blocks and the annular locking groove.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dynamic circulation valve characterized by: The system includes a valve body (1) and a valve core assembly (2); the lower end of the valve body (1) forms an inlet (11), and the upper end of the valve body (1) forms an outlet (12); the side wall of the valve body (1) is provided with a circulating water outlet (13) and a circulating water return outlet (14), which are spaced apart along the direction of water flow through the valve body (1); the circulating water outlet (13) is connected to one end of a circulating water pipe (3), and the circulating water return outlet (14) is connected to the valve core assembly (2). The port (14) is connected to the other end of the circulating water pipe (3), and the circulating water pipe (3) is equipped with an outlet valve; the valve core assembly (2) is installed inside the valve body (1) located between the circulating water outlet (13) and the circulating water return port (14); when the water flows through the valve core assembly (2), the valve core assembly (2) is used to change the water flow velocity in the valve body (1) so that the water flow velocity on the outlet side of the valve core assembly (2) is greater than the water flow velocity on the inlet side of the valve core assembly (2).

2. The dynamic circulation valve of claim 1, wherein: The circulating water return port (14) is located near the outlet end of the valve core assembly (2).

3. Dynamic circulation valve according to claim 1 or 2, characterized in that: The inner wall of the connection between the circulating water return port (14) and the valve body (1) forms an arc-shaped transition section (141), and the end of the transition section (141) connected to the valve body (1) bends away from the valve core assembly (2).

4. The dynamic circulation valve according to claim 1 or 2, characterized in that: The inner wall of the valve body (1) is provided with an annular boss (15) extending inward along the radial direction of the valve body (1), and the water inlet end of the valve core assembly (2) abuts against the annular boss (15).

5. The dynamic circulation valve of claim 4, wherein: An annular constriction (151) is formed on the inner wall of the lower end of the annular boss (15), and the diameter of the annular constriction (151) gradually decreases along the direction of water flow through the valve body (1).

6. The dynamic circulation valve of claim 4, wherein: The valve core assembly (2) includes a connecting ring (21), a connecting seat (22), a valve core (23), and a spring (24); the lower end of the connecting ring (21) is supported on an annular boss (15), the outer wall of the connecting ring (21) is circumferentially sealed to the inner wall of the valve body (1), the lower end of the connecting seat (22) is fixed to the upper end of the connecting ring (21), the valve core (23) is disposed inside the connecting seat (22), and the inner wall of the connecting ring (21) is circumferentially provided with several A support block (211) is provided, which is used to abut against the lower end of the valve core (23) to form a water passage gap (25) between the valve core (23) and the connecting ring (21). The two ends of the spring (24) abut against the upper end of the valve core (23) and the inner top of the connecting seat (22), respectively. The spring (24) is used to apply a spring force to the valve core (23) to drive the valve core (23) to move downward. A water outlet hole (221) is provided vertically in the middle of the connecting seat (22).

7. The dynamic circulation valve of claim 6, wherein: The valve core (23) is provided with a plurality of water passage holes (231) in the circumferential direction, and each water passage hole (231) penetrates the valve core (23) axially.

8. Dynamic circulation valve according to claim 6 or 7, characterized in that: The upper end of the valve core (23) is coaxially provided with a valve stem (232), which is movably inserted into the water outlet (221) and has a clearance fit with the water outlet (221); a plurality of support plates (233) are arranged circumferentially on the outer wall of the valve stem (232), each support plate (233) extends along the axial direction of the valve stem (232), and each support plate (233) abuts against the inner wall of the water outlet (221) and slides in fit with the water outlet (221).

9. The dynamic circulation valve according to claim 6 or 7, characterized in that: The valve core (23) has an inverted cone-shaped structure at the outer edge of its lower end.

10. The dynamic circulation valve according to claim 6 or 7, characterized in that: An annular step (211) is provided on the outer wall of the lower end of the connecting ring (21), and a sealing ring (26) is embedded on the annular step (211). The sealing ring (26) is tightly sealed to the side wall of the annular step (211) and the inner wall of the valve body (1).

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