Dynamic circulating valve
By setting up circulating water discharge outlets and return outlets in the dynamic circulation valve, and using the valve core assembly to change the water flow rate to generate a Venturi effect, the problem of bacteria breeding in the stagnant water area is solved, and the water flow in the circulating water pipe is realized and the user's health is protected.
Patent Information
- Application Number
- CN202510189655.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-05-13
AI Technical Summary
In domestic water supply pipeline systems, stagnant water areas that are not used for a long time are prone to breed bacteria, corrode pipelines, and cause harm to physical health.
A dynamic circulation valve is designed to provide a circulating water discharge outlet and circulating water return port on the side wall of the valve body, and to change the water flow rate in the valve core assembly, creating a venturi effect, so as to maintain the water flow without opening the water outlet valve on the circulating water pipe, and avoid the formation of stagnant water areas.
It effectively avoids the formation of stagnant water areas in the circulating water pipeline, prevents bacterial growth and pipeline corrosion, and protects the health of users.
Smart Images
Figure CN119981208A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of water valves, and in particular to a dynamic circulation valve. Background Art
[0002] In the domestic water supply pipeline system, when there is no water flowing in the water supply pipeline for a long time, a dead water area will be formed in the water supply pipeline. That is, when it is not used for a long time, bacteria are likely to breed in the dead water area of the pipeline and corrode the pipeline. Moreover, people's use of dead water that has not flowed for a long time can easily cause harm to their health and affect their health. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a dynamic circulation valve, which can avoid the formation of dead water areas in the circulating water pipeline, that is, can avoid the breeding of bacteria in the circulating water pipeline.
[0004] The present invention provides a dynamic circulation valve, comprising a valve body and a valve core assembly; a water inlet is formed at the lower end of the valve body, and a water outlet is formed at the upper end of the valve body; a circulating water outlet and a circulating water return port are arranged on the side wall of the valve body, the circulating water outlet and the circulating water return port are distributed at intervals along the direction of water flowing through the valve body, the circulating water outlet is connected to one end of a circulating water pipeline, the circulating water return port is connected to the other end of the circulating water pipeline, and a water outlet valve is installed on the circulating water pipeline; the valve core assembly is installed inside the valve body between the circulating water outlet and the circulating water return port; 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 water outlet side of the valve core assembly is greater than the water flow velocity on the water inlet side of the valve core assembly.
[0005] After the present invention adopts the above-mentioned structure, when the water user connected to the rear stage of the water outlet of the valve body uses water to make water flow through the valve core assembly, and when the valve core assembly changes the water flow rate in the valve body so that the water flow rate on the side of the water outlet end of the valve core assembly is greater than the water flow rate on the side of the water inlet end of the valve core assembly, a Venturi effect will be generated at the water outlet end of the valve core assembly, that is, a pressure difference can be generated between the circulating water outlet and the circulating water return port, so that the water in the valve body can flow through the circulating water outlet, the circulating water pipeline and the circulating water return port in sequence and then flow back into the valve body, that is, when the water outlet valve on the circulating water pipeline is not opened, the water in the circulating water pipeline can also flow, thereby avoiding the generation of dead water areas in the circulating water pipeline, that is, avoiding the growth of bacteria in the circulating water pipeline, thereby avoiding affecting the health of users.
[0006] In a possible implementation, the circulating water return port is close to the water outlet end of the valve core assembly; by adopting this structure, when the water user connected to the downstream stage of the water outlet of the valve body uses water to make water flow through the valve core assembly, and when the valve core assembly changes the water flow rate in the valve body so that the water flow rate on the side of the water outlet end of the valve core assembly is greater than the water flow rate on the side of the water inlet end of the valve core assembly, a Venturi effect will be generated at the water outlet end of the valve core assembly, and since the circulating water return port is close to the water 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 through the circulating water outlet, the circulating water pipeline and the circulating water return port in sequence and then flow back into the valve body (a pressure difference is generated between the circulating water outlet and the circulating water return port), that is, when the water outlet valve on the circulating water pipeline is not opened, the water in the circulating water pipeline can also flow, thereby avoiding the generation of dead water areas in the circulating water pipeline, that is, avoiding the growth of bacteria in the circulating water pipeline.
[0007] In a possible embodiment, the inner wall of the connection between the circulating water return port and the valve body forms an arc-shaped transition section, and the end of the transition section connected to the valve body is bent toward the side away from the valve core assembly; by adopting this structure, when the water user connected to the downstream of the water 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 so that a Venturi effect is generated at the water outlet end of the valve core assembly, a pressure difference is generated between the circulating water outlet and the circulating water return port, so that when the water in the valve body flows through the circulating water outlet, the circulating water pipeline and the circulating water return port in sequence and then flows back into the valve body, under the action of the arc-shaped transition section, the water in the circulating water pipeline can flow back into the valve body more smoothly, so as to improve the flow efficiency and effect of the water in the circulating water pipeline.
[0008] In one possible embodiment, an annular boss extending inward in 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 embodiment, an annular necking is formed on the inner wall of the lower end of the annular boss, and the diameter of the annular necking gradually decreases along the direction of water flow through the valve body; by adopting this structure, when the water user connected to the rear stage of the water outlet of the valve body uses water to make the water flow through the valve core assembly, the flow rate of the water flow can be changed in advance under the action of the annular necking, that is, the flow rate of the water flow through the annular necking is increased in advance, so that when the water flows through the valve body assembly, the valve body assembly can further effectively increase the flow rate of the water flow, so that the Venturi effect generated at the water outlet end of the valve core assembly is more obvious, so that the water in the valve body can more reliably flow through the circulating water outlet, the circulating water pipeline and the circulating water return port in sequence and then flow back to the valve body, that is, the flow efficiency and effect of the water body in the circulating water pipeline can be improved, so as to further avoid the formation of dead water areas in the circulating water pipeline and avoid the growth of bacteria in the circulating water pipeline.
[0010] In a possible embodiment, 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 the annular boss, the outer side wall of the connecting ring is circumferentially sealed with the inner side 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 arranged on the inner side of the connecting seat, and a plurality of supporting blocks are circumferentially arranged on the inner wall of the connecting ring, the supporting blocks are used to abut against the lower end of the valve core to form a water-passing gap between the valve core and the connecting ring, the two ends of the spring are respectively abutted against the upper end of the valve core and the inner top of the connecting seat, the spring is used to apply elastic force to the valve core to drive the valve core to move downward, and a water outlet hole is vertically arranged in the middle of the connecting seat; after adopting this valve core assembly, when connected in When the water user at the downstream stage of the water outlet of the valve body uses water to make water flow through the valve core assembly, when the water flow rate is small, the water flow can flow through the water passing gap and flow out from the water outlet hole on the connecting seat, and when the water flow rate is large, the water flow can gradually push the valve core (the spring is compressed at this time) to increase the water flow rate at the water outlet end of the valve body; in addition, since the inner diameter of the water passing gap and the inner diameter of the water outlet hole are smaller than the inner diameter of the valve body, when 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 water outlet side of the valve core assembly is greater than the water flow velocity on the water inlet side of the valve core assembly, thereby enabling a Venturi effect to be generated at the water outlet end of the valve core assembly.
[0011] In one possible embodiment, a plurality of water holes are circumferentially arranged on the valve core, and each water hole axially penetrates the valve core; after the water holes are arranged on the valve core, when the water user connected to the water outlet of the valve body uses water to make water flow through the valve core assembly, under the condition of small water flow rate, the water flow can simultaneously flow through the water gap and the plurality of water holes and flow out from the water outlet hole on the connecting seat, that is, in the process of increasing water flow rate, the opening of the valve core can be delayed, thereby increasing the opening threshold of the valve core, and then under the condition of low water flow rate, the flow rate of the water discharged from the water outlet end of the valve core assembly can be increased as much as possible, so that the Venturi effect generated at the water outlet end of the valve core assembly is more obvious.
[0012] In a possible embodiment, a valve stem is coaxially arranged at the upper end of the valve core, and the valve stem is movably inserted into the water outlet and cooperates with the gap of the water outlet; a plurality of support plates are circumferentially arranged on the outer wall of the valve stem, each support plate extends along the axial direction of the valve stem, and each support plate abuts against the inner wall of the water outlet and slides with the water outlet; after adopting this structure, when the water flow rate flowing through the valve core assembly changes and drives the valve core to move up and down, the valve stem and the support plates arranged on the outer wall of the valve stem cooperate with the sliding of the inner wall of the water outlet, which can guide the up and down movement of the valve core, so that the up and down movement of the valve core is smoother; in addition, a water passage is formed between each two adjacent support plates and the water outlet to facilitate water to flow through the water passage.
[0013] In one possible embodiment, an inverted cone-shaped structure is formed at the outer edge of the lower end of the valve core; by adopting this structure, in the process of water flowing from the water inlet end of the valve core assembly to the water 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 flow can flow more smoothly through the water gap and the valve core assembly.
[0014] In a possible embodiment, 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, and the sealing ring is tightly sealed with the side wall of the annular step and the inner wall of the valve body; by adopting this structure, the outer wall of the connecting ring can reliably achieve the purpose of 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 the purpose of circumferential sealing with the inner wall of the valve body through the sealing ring.
[0015] In a possible embodiment, the lower end of the connecting seat is inserted into the upper end of the connecting ring, an annular groove is provided on the outer wall of the lower end of the connecting seat, and an annular convex rib is provided on the inner wall of the upper end of the connecting ring, and the annular convex rib is embedded in the annular groove to fasten the connecting seat and the connecting ring; by adopting this structure, under the interlocking action of the annular convex rib and the annular groove, the lower end of the connecting seat can be reliably buckled with the upper end of the connecting ring, that is, the lower end of the connecting seat and the upper end of the connecting ring can be conveniently fastened.
[0016] In a possible embodiment, a plurality of circumferentially spaced clamping blocks are provided on the outer wall of the connecting seat, an annular clamping groove is provided on the inner wall of the valve body, and the plurality of clamping blocks are engaged with the annular clamping groove to lock the valve core assembly and the valve body; by adopting this structure, the valve core assembly can be reliably locked together with the valve body under the engaged action of the plurality of clamping blocks and the annular clamping groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a cross-sectional structural schematic diagram of the present invention; Figure 2 for Figure 1 The schematic diagram of the structure after the enlargement of A in the middle; Figure 3 It is a schematic diagram of the top view of the structure of the valve core of the first form; Figure 4 It is a schematic diagram of the top view structure of the second form of valve core. DETAILED DESCRIPTION
[0018] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.
[0019] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.
[0020] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0021] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0022] See also Figure 1-4As shown, the embodiment of the present application discloses a dynamic circulation valve, including a valve body 1 and a valve core assembly 2; a water inlet 11 is formed at the lower end of the valve body 1, and a water outlet 12 is formed at the upper end of the valve body 1; a circulating water outlet 13 and a circulating water return port 14 are arranged on the side wall of the valve body 1, and the circulating water outlet 13 and the circulating water return port 14 are distributed at intervals along the direction of water flowing 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 port 14 is connected to the other end of the circulating water pipe 3, and a water outlet valve is installed on the circulating water pipe 3; the valve core assembly 2 is installed inside the valve body 1 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 water outlet side of the valve core assembly 2 is greater than the water flow velocity on the water inlet side of the valve core assembly 2; the above-mentioned water outlet valve connected to the circulating water pipe can be a valve body type such as an angle valve and a faucet.
[0023] The circulating water return port 14 is close to the water outlet end of the valve core assembly 2; by adopting this structure, when the water user connected to the downstream stage of the water outlet of the valve body uses water to make water flow through the valve core assembly, and when the valve core assembly changes the water flow rate in the valve body so that the water flow rate on the side of the water outlet end of the valve core assembly is greater than the water flow rate on the side of the water inlet end of the valve core assembly, a Venturi effect will be generated at the water outlet end of the valve core assembly, and since the circulating water return port is close to the water 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 through the circulating water discharge port, the circulating water pipeline and the circulating water return port in sequence and then flow back into the valve body (a pressure difference is generated between the circulating water discharge port and the circulating water return port), that is, when the water outlet valve on the circulating water pipeline is not opened, the water in the circulating water pipeline can also flow, thereby avoiding the formation of dead water areas in the circulating water pipeline, that is, avoiding the growth of bacteria in the circulating water pipeline.
[0024] 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 is bent toward the side away from the valve core assembly 2; by adopting this structure, when the water user connected to the downstream of the water 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 so that a Venturi effect is generated at the water outlet end of the valve core assembly, a pressure difference is generated between the circulating water outlet and the circulating water return port, so that when the water in the valve body flows through the circulating water outlet, the circulating water pipeline and the circulating water return port in sequence and then flows back into the valve body, under the action of the arc-shaped transition section, the water in the circulating water pipeline can flow back into the valve body more smoothly, so as to improve the flow efficiency and effect of the water in the circulating water pipeline.
[0025] An annular boss 15 extending inwardly in 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; 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.
[0026] 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 the water flow passing through the valve body 1; by adopting this structure, when the water user connected to the downstream of the water outlet of the valve body uses water to make the water flow through the valve core assembly, the flow rate of the water flow can be changed in advance under the action of the annular constriction, that is, the flow rate of the water flow passing through the annular constriction is increased in advance, so that when the water flows through the valve body assembly, the valve body assembly can further effectively increase the flow rate of the water flow, so that the Venturi effect generated at the water outlet end of the valve core assembly is more obvious, so that the water in the valve body can more reliably flow through the circulating water outlet, the circulating water pipeline and the circulating water return port in sequence and then flow back to the valve body, that is, the flow efficiency and effect of the water body in the circulating water pipeline can be improved, so as to further avoid the formation of dead water areas in the circulating water pipeline and avoid the breeding of bacteria in the circulating water pipeline.
[0027] 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 the annular boss 15, the outer side wall of the connecting ring 21 is circumferentially sealed with the inner side 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 arranged on the inner side of the connecting seat 22, and a plurality of supporting blocks 211 are circumferentially arranged on the inner wall of the connecting ring 21, the supporting blocks 211 are used to abut against the lower end of the valve core 23 so as to form a water-passing gap 25 between the valve core 23 and the connecting ring 21, the two ends of the spring 24 are respectively abutted against the upper end of the valve core 23 and the inner top of the connecting seat 22, the spring 24 is used to apply an elastic force to the valve core 23 to drive the valve core 23 to move downward, and a discharge spring is vertically arranged in the middle of the connecting seat 22. Water hole 221; by adopting this valve core assembly, when the water user connected to the downstream stage of the water outlet of the valve body uses water to make water flow through the valve core assembly, when the water flow rate is small, the water flow can flow through the water-passing gap and flow out from the water outlet hole on the connecting seat, and when the water flow rate is large, the water flow can gradually push the valve core (the spring is compressed at this time) to increase the water flow rate at the water outlet end of the valve body; in addition, since the inner diameter of the water-passing gap and the inner diameter of the water outlet hole are smaller than the inner diameter of the valve body, when 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 water outlet side of the valve core assembly is greater than the water flow velocity on the water inlet side of the valve core assembly, thereby enabling a Venturi effect to be generated at the water outlet end of the valve core assembly.
[0028] A plurality of water holes 231 are circumferentially arranged on the valve core 23, and each water hole 231 axially penetrates the valve core 23. After the water holes are arranged on the valve core, when the water user connected to the water outlet of the valve body uses water to make the water flow through the valve core assembly, under the condition of small water flow rate, the water flow can simultaneously flow through the water gap and the plurality of water holes and flow out from the water outlet hole on the connecting seat, that is, in the process of increasing water flow rate, the opening of the valve core can be delayed, thereby increasing the opening threshold of the valve core, and then under the condition of low water flow rate, the flow rate of the water discharged from the water outlet end of the valve core assembly can be increased as much as possible, so that the Venturi effect generated at the water outlet end of the valve core assembly is more obvious.
[0029] like Figure 3 As shown, in Figure 3 In the embodiment, the plurality of water holes are all circular holes, and the plurality of water holes are spaced apart along the circumferential direction of the valve core; Figure 4 As shown, in Figure 4 In the embodiment, the plurality of water holes are waist-shaped holes, and the plurality of water holes are spaced apart and distributed along the circumferential direction of the valve core; in addition, the shapes of the water holes can also be other shapes.
[0030] A valve stem 232 is coaxially arranged at the upper end of the valve core 23, and the valve stem 232 is movably inserted into the water outlet hole 221 and is in clearance with the water outlet hole 221; a plurality of support sheets 233 are circumferentially arranged on the outer wall of the valve stem 232, and each support sheet 233 extends along the axial direction of the valve stem 232, and each support sheet 233 abuts against the inner wall of the water outlet hole 221 and is in sliding cooperation with the water outlet hole 221; by adopting this structure, when the water flow rate flowing through the valve core assembly changes and drives the valve core to move up and down, the valve stem and the support sheets arranged on the outer wall of the valve stem slide in cooperation with the inner wall of the water outlet hole, which can guide the up and down movement of the valve core, so that the up and down movement of the valve core is smoother; in addition, a water passage is formed between each two adjacent support sheets and the water outlet hole, so that water can flow through the water passage.
[0031] An inverted cone-shaped structure is formed at the outer edge of the lower end of the valve core 23; by adopting this structure, in the process of water flowing from the water inlet end of the valve core assembly to the water 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 flow can flow more smoothly through the water gap and the valve core assembly.
[0032] 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 in the annular step 211. The sealing ring 26 is tightly sealed with the side wall of the annular step 211 and the inner wall of the valve body 1; by adopting this structure, the outer wall of the connecting ring can reliably achieve the purpose of 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 the purpose of circumferential sealing with the inner wall of the valve body through the sealing ring.
[0033] The lower end of the connecting seat 22 is inserted into the upper end of the connecting ring 21, and an annular groove 222 is provided on the outer wall of the lower end of the connecting seat 22, and an annular convex rib 212 is provided on the inner wall of the upper end of the connecting ring 21. The annular convex rib 212 is embedded in the annular groove 222 to fasten the connecting seat 22 and the connecting ring 21. After adopting this structure, under the interlocking action of the annular convex rib and the annular groove, the lower end of the connecting seat can be reliably buckled with the upper end of the connecting ring, that is, the lower end of the connecting seat and the upper end of the connecting ring can be conveniently fastened.
[0034] A plurality of circumferentially spaced blocks 223 are provided on the outer wall of the connecting seat 22, and an annular groove 16 is provided on the inner wall of the valve body 1. The plurality of blocks 223 are engaged with the annular groove 16 to lock the valve core assembly 2 and the valve body 1. By adopting this structure, the valve core assembly can be reliably locked with the valve body under the engaged action of the plurality of blocks and the annular groove.
[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A dynamic circulation valve, characterized in that: The valve body (1) comprises a valve body (1) and a valve core assembly (2); a water inlet (11) is formed at the lower end of the valve body (1), and a water outlet (12) is formed at the upper end of the valve body (1); a circulating water outlet (13) and a circulating water return outlet (14) are arranged on the side wall of the valve body (1); the circulating water outlet (13) and the circulating water return outlet (14) are arranged at intervals 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 pipeline (3); and the circulating water return outlet (14) is connected to the circulating water pipeline (3). The outlet (14) is connected to the other end of a circulating water pipeline (3), and a water outlet valve is installed on the circulating water pipeline (3); the valve core assembly (2) is installed inside the valve body (1) between the circulating water outlet (13) and the circulating water return outlet (14); when water flows through the valve core assembly (2), the valve core assembly (2) is used to change the water flow rate in the valve body (1) so that the water flow rate on the water outlet side of the valve core assembly (2) is greater than the water flow rate on the water inlet side of the valve core assembly (2).
2. The dynamic circulation valve according to claim 1, characterized in that: The circulating water return port (14) is close to the water outlet end of the valve core assembly (2).
3. The 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 one end of the transition section (141) connected to the valve body (1) is bent towards a side away from the valve core assembly (2).
4. The dynamic circulation valve according to claim 1 or 2, characterized in that: An annular boss (15) extending inwardly in 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).
5. The dynamic circulation valve according to claim 4, characterized in that: 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 flowing through the valve body (1).
6. The dynamic circulation valve according to claim 4, characterized in that: The valve core assembly (2) comprises 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 with 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 arranged on the inner side of the connecting seat (22); and the inner wall of the connecting ring (21) is circumferentially provided with a plurality of A support block (211) is provided, wherein the support block (211) is used to abut against the lower end of the valve core (23) so as to form a water-passing gap (25) between the valve core (23) and the connecting ring (21); two ends of the spring (24) are respectively abutted against the upper end of the valve core (23) and the inner top of the connecting seat (22); the spring (24) is used to apply an elastic force to the valve core (23) to drive the valve core (23) to move downward; and a water outlet hole (221) is vertically arranged in the middle of the connecting seat (22).
7. The dynamic circulation valve according to claim 6, characterized in that: A plurality of water through holes (231) are circumferentially arranged on the valve core (23), and each of the water through holes (231) axially penetrates the valve core (23).
8. The dynamic circulation valve according to claim 6 or 7, characterized in that: A valve stem (232) is coaxially arranged at the upper end of the valve core (23), and the valve stem (232) is movably inserted into the water outlet hole (221) and is clearance-matched with the water outlet hole (221); a plurality of support sheets (233) are circumferentially arranged on the outer wall of the valve stem (232), and each of the support sheets (233) extends in the axial direction of the valve stem (232), and each of the support sheets (233) abuts against the inner wall of the water outlet hole (221) and is slidingly matched with the water outlet hole (221).
9. The dynamic circulation valve according to claim 6 or 7, characterized in that: An outer edge of the lower end of the valve core (23) forms an inverted cone-shaped structure.
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), a sealing ring (26) is embedded in the annular step (211), and the sealing ring (26) is tightly sealed against the side wall of the annular step (211) and the inner wall of the valve body (1).