A current limiting component and a solenoid valve

Abstract

This utility model discloses a flow-limiting component and a solenoid valve. It includes: a flow-limiting ring body, which is connected to a first water pipe to form a main channel; and a bracket, which is fixedly sleeved on the outside of the flow-limiting ring body. One end of the bracket has a water inlet connected to the flow-limiting ring body and the first water pipe. The first water pipe has a water groove. The bracket is movably positioned in the water groove. At least one elastically deformable support arm is provided on the outer circumference of the bracket, which supports the bracket so that it is mounted within the water groove. A gap is formed between the bracket and the water groove, and the gap is connected to the water groove to form a secondary channel. When the inlet water pressure is lower than a threshold pressure, the bracket separates from the stepped surface of the water groove. When the inlet water pressure reaches or exceeds the threshold pressure, the bracket moves downward and presses against the stepped surface of the water groove, closing the secondary channel.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to a current limiting component and an electromagnetic valve. Background Technology

[0002] In modern fluid control systems, flow-limiting rings are widely used as a key flow control element in various valve devices, including urinal flush valves. However, existing flow-limiting rings have some insurmountable limitations, revealing numerous problems in practical applications.

[0003] Traditional flow-limiting rings are typically designed and operate on a single flow control logic. Their core function is to limit the flow rate of the fluid passing through them to meet the system's basic requirements for flow stability. When the system is under high pressure, current flow-limiting rings can limit the flow to a certain extent, preventing excessive flow that could lead to system failure or resource waste. However, the problem is that while limiting high-pressure flow, these flow-limiting rings also significantly interfere with and affect low-pressure flow. This is because their internal structure and flow path design do not fully consider the differential flow regulation under different pressures, resulting in the inability to achieve precise and independent flow control in low-pressure environments.

[0004] The working environment and usage requirements of urinal flush valves are unique. They need to adapt to different static pressure conditions, and the flow rate difference between static pressures of 0.17 MPa and 0.55 MPa should be minimized to ensure consistent and stable flushing performance. When using existing flow-limiting rings, attempting to adjust the low-pressure flow rate to meet flushing needs under low static pressure often results in high-pressure flow rates exceeding the predetermined standard. This severely restricts the performance and applicability of urinal flush valves, significantly reducing their versatility and reliability under different water pressure environments, and failing to fully meet the requirements of modern bathroom systems for efficient and precise flushing. Therefore, there is an urgent need to develop a flow-limiting ring component and solenoid valve structure that can overcome the shortcomings of existing technologies and achieve precise control of high and low pressure flow rates with minimal mutual interference. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a current limiting component and a solenoid valve, which can effectively solve the problems existing in the prior art.

[0006] The technical solution of this utility model is:

[0007] According to one aspect of the present invention, the present invention includes: a flow-limiting ring body, wherein the flow-limiting ring body is installed inside a first water pipe, the flow-limiting ring body and the first water pipe are connected to form a main channel, and a bracket is also included, the bracket being fixedly sleeved on the outside of the flow-limiting ring body, one end of the bracket being provided with a water inlet connected to the flow-limiting ring body and the first water pipe, the first water pipe being provided with a water groove, the bracket being movably disposed in the water groove, at least one elastically deformable support arm being provided on the outer circumferential surface of the bracket, the support arm being used to support the bracket so that the bracket is mounted in the water groove, a gap being formed between the bracket and the water groove, the gap being connected to the water groove to form a secondary channel;

[0008] When the inlet water pressure is lower than the threshold pressure, the bracket separates from the stepped surface of the water passage; when the inlet water pressure reaches or exceeds the threshold pressure, the bracket moves downward and presses against the stepped surface of the water passage, and the secondary channel is closed.

[0009] Furthermore, multiple support arms are provided, and the multiple support arms are distributed at intervals on the outer peripheral surface of the bracket.

[0010] Furthermore, the support arm is a first leg, which is fixed to the bracket at a downward angle.

[0011] Furthermore, it also includes a number of limiting ribs, which are spaced apart on the outer periphery of the bracket and are positioned above the support arm.

[0012] Furthermore, the support arm is a second leg, which is an arc-shaped strip. One end of the second leg is fixedly connected to the limiting rib, and the other end extends downward to form a protrusion.

[0013] Furthermore, a boss is provided extending inward from the edge of the water inlet, the body of the flow-limiting ring is fixed to the boss, and the diameter of the water inlet is smaller than the diameter of the water outlet.

[0014] Furthermore, the flow-limiting ring body and the bracket are integrally formed.

[0015] Furthermore, the flow-limiting ring body and the support are separate structures.

[0016] According to another aspect of the present invention, a solenoid valve includes a valve body, one end of which is provided with a second water pipe and the other end of which is provided with a first water pipe, and further includes a flow limiting component as described above.

[0017] Furthermore, a first sealing ring is installed between the first water pipe and the valve body.

[0018] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0019] Firstly, the flow-limiting component, through the cooperation of the bracket and the water passage, controls the opening and closing of the secondary channel by the up-and-down movement of the bracket. When the inlet water pressure is lower than the threshold pressure, the bracket separates from the step surface, and the water can be discharged through both the main channel and the secondary channel simultaneously, ensuring sufficient flow under low pressure to meet the flushing needs under low static pressure. When the inlet water pressure reaches or exceeds the threshold pressure, the bracket moves downward to press against the step surface, closing the secondary channel, and all the water is discharged through the main channel. The flow-limiting ring in the main channel limits the flow, effectively preventing excessive flow under high pressure from causing system failure or resource waste. This achieves precise control of high and low pressure flow, solving the problem in existing technologies where the flow-limiting ring significantly interferes with low pressure flow when limiting high pressure flow, and improving the versatility and reliability of the urinal flushing valve under different static pressure conditions.

[0020] Secondly, multiple support arms are spaced apart on the outer circumference of the support, allowing for a more even distribution of force to the water channel when subjected to water pressure. This enhances the stability and reliability of the support under different pressures, preventing tilting or jamming caused by uneven force on a single support arm, and ensuring the precision of the secondary channel's opening and closing. Furthermore, the combined action of multiple support arms provides stronger elastic support, enabling the support to maintain a more stable separation from the step surface under low pressure and to more tightly press against the step surface under high pressure, closing the secondary channel and further improving the control performance of the flow-limiting component.

[0021] Thirdly, the first leg is fixed to the support arm at a downward angle. This design allows the support arm to have a certain degree of elasticity while also possessing good strength and stability. The downward angled setting can better adapt to the water flow direction, reduce the impact of the water flow on the support arm, extend the service life of the support arm, and at the same time provide more stable support for the support frame, enabling the support frame to be erected more reliably in the water channel.

[0022] Fourth, the limiting ribs provide a limiting effect on the vertical movement of the support, preventing excessive movement of the support under excessive pressure or external force, thereby avoiding malfunctions or damage to the fit between the support and the water passage. The cooperation between the limiting ribs and the support arm further improves the positional stability of the support within the water passage.

[0023] Fifth, the second leg is fixedly connected to the limiting rib. This structure not only enhances the connection strength between the support arm and the bracket and improves the stability of the overall structure, but the second leg is an arc-shaped strip. This design allows the support arm to better adapt to pressure changes when subjected to water flow pressure. The arc surface can reduce the resistance of water flow to the support arm, making the movement of the bracket more flexible and free. At the same time, it reduces the stress concentration generated by the support arm during elastic deformation, improves the fatigue life of the support arm, and further enhances the adaptability and stability of the flow limiting component under different pressure conditions. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the explosive structure of this utility model. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the explosive structure of this utility model. Figure 2 ;

[0027] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 4 This is a three-dimensional structural diagram of the current limiting ring assembly in this utility model;

[0029] Figure 5 This is a schematic diagram of the planar structure of the support in Embodiment 1 of this utility model;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the support in Embodiment 2 of this utility model;

[0031] Figure 7 This is a schematic diagram of the support planar structure in Embodiment 2 of this utility model;

[0032] Figure 8 This is a three-dimensional structural diagram of the present invention;

[0033] In the diagram: Flow limiting component-100, bracket-1, support arm-11, first leg-11a, limiting rib-12, water outlet-13, boss-14, second leg-11b, protrusion-111b, flow limiting ring body-2, water passage cavity-21, second sealing ring-3, valve body-200, first water pipe-201, water passage groove-2011, water outlet-2012, fastener-202, second water pipe-203, mounting groove-204, first sealing ring-205, main channel-300, secondary channel-400. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0035] like Figures 1 to 8 As shown, this solution provides a current limiting component and a solenoid valve.

[0036] Example 1:

[0037] Please see Figures 1 to 5 According to one aspect of this utility model, a flow-limiting component includes: a flow-limiting ring body 2, which is installed inside a first water pipe 201 and connected to the first water pipe 201 to form a main channel 300. A second sealing ring 3 is also assembled inside the flow-limiting ring body 2. The flow-limiting ring body 2 is a direct application of prior art, and its structure and principle will not be described in detail here. Specifically, the first water pipe 201 is provided with a water passage groove 2011, and the water passage cavity 21 of the flow-limiting ring body 2, the water passage groove 2011, and the outlet 2012 of the first water pipe 201 form the main channel 300.

[0038] The system also includes a bracket 1, which is fixedly sleeved on the outside of the flow-limiting ring body 2. One end of the bracket 1 is provided with a water inlet 13 that communicates with the flow-limiting ring body 2 and the first water pipe 201. A boss 14 extends inward from the edge of the water inlet 13. The flow-limiting ring body 2 is fixed to the boss 14. The diameter of the water inlet 13 is smaller than the diameter of the outlet hole 2013. The bracket 1 is movably mounted on the water passage 2011. At least one elastically deformable support arm 11 is provided on the outer circumferential surface of the bracket 1. The support arm 11 is used to support the bracket 1, so that the bracket 1 is mounted in the water passage 2011. A gap 15 is formed between the bracket 1 and the water passage 2011. The gap 15 communicates with the water passage 2011 to form a secondary channel 400. Preferably, multiple support arms 11 are provided, and the multiple support arms 11 are distributed at intervals on the outer circumferential surface of the bracket 1. Multiple support arms 11 are spaced apart on the outer circumference of the bracket 1, allowing the bracket 1 to transmit force more evenly to the water passage 2011 when subjected to water pressure. This enhances the stability and reliability of the bracket 1 under different pressures and prevents the bracket 1 from tilting or jamming due to uneven force on a single support arm 11, ensuring the accuracy of the opening and closing of the secondary channel 400. Moreover, the combined action of multiple support arms 11 provides stronger elastic support, enabling the bracket 1 to maintain a more stable separation from the step surface 2014 under low pressure and to press more tightly against the step surface 2014 under high pressure, closing the secondary channel 400 and further improving the control performance of the flow limiting component 100.

[0039] It also includes several limiting ribs 12, which are spaced apart on the outer circumference of the support 1 and positioned above the support arm 11. The limiting ribs 12 provide a limiting function for the vertical movement of the support 1, preventing excessive movement when subjected to excessive pressure or external force, thereby avoiding malfunctions or damage to the fit between the support 1 and the water passage 2011. The cooperation between the limiting ribs 12 and the support arm 11 further improves the positional stability of the support 1 within the water passage 2011.

[0040] In this embodiment, there are three support arms 11, which are equidistantly distributed on the bracket 1. There are also three limiting ribs 12, which are equidistantly distributed on the bracket 1, with the support arms 11 and the limiting ribs 12 interleaved. In this embodiment, the support arm 11 is a first leg 11a, which is fixed to the bracket 1 at a downward inclination. This downward inclination design allows the support arm 11 to possess both elasticity and good strength and stability. The downward inclination better adapts to the water flow direction, reduces the impact of the water flow on the support arm, extends the service life of the support arm 11, and provides more stable support for the bracket, enabling the bracket 1 to be reliably erected within the water passage 2011.

[0041] The current limiting ring body 2 and the bracket 1 are integrally formed; when the current limiting ring body 2 and the bracket 1 are integrally formed, the current limiting ring body 2 and the bracket 1 are plastic products.

[0042] The flow-limiting ring body 2 and the bracket 1 are separate structures. When the flow-limiting ring body 2 and the bracket 1 are separate structures, the flow-limiting ring body 2 and the bracket 1 can be made of plastic or metal. However, the support arm 11 needs to be made of a material that can be elastically deformed, such as rubber or silicone.

[0043] When the inlet water pressure is lower than the threshold pressure, the bracket 1 separates from the stepped surface 2014 of the water passage 2011; when the inlet water pressure reaches or exceeds the threshold pressure, the bracket 1 moves downward and presses against the stepped surface 2014 of the water passage 2011, and the secondary channel 400 is closed.

[0044] Example 2:

[0045] Please see Figures 1 to 7The difference between this embodiment and Embodiment 1 is that: the support arm 11 is a second leg 11b, which is an arc-shaped strip. One end of the second leg 11b is fixedly connected to the limiting rib 12, and the other end extends downward to form a protrusion 111b. There are three support arms 11, one end of each of the three support arms 11 is fixedly connected to the lower end of the limiting rib 12, and both the inner and outer sides of the second leg 11b are arc surfaces. The three second legs 11b are equidistantly spaced around the outside of the bracket 1.

[0046] The second leg 11b is fixedly connected to the limiting rib 12. This structure not only enhances the connection strength between the support arm 11 and the bracket 1 and improves the stability of the overall structure, but also the second leg 11b is an arc-shaped strip. This design allows the support arm 11 to better adapt to pressure changes when subjected to water flow pressure. The arc surface can reduce the resistance of the water flow to the support arm, making the movement of the bracket 1 more flexible and free. At the same time, it reduces the stress concentration generated by the support arm 11 during elastic deformation, improves the fatigue life of the support arm 11, and further enhances the adaptability and stability of the flow limiting component 100 under different pressure conditions.

[0047] Please see Figures 1 to 8 According to another aspect of this utility model, a solenoid valve includes a valve body 200, with a second water pipe 203 at one end and a first water pipe 201 at the other end, including any of the flow-limiting components described above. A first sealing ring 205 is fitted between the first water pipe 201 and the valve body 200. Specifically, the valve body 200 is provided with a mounting groove 204 for installing the first sealing ring 205, and both the second water pipe 203 and the first water pipe 201 are secured to the valve body 200 by fasteners 202, which are screws.

[0048] Working principle:

[0049] When the valve body 200 is energized, the channel between the second water pipe 203 and the first water pipe 201 is opened, and water flows through the second water pipe 203 into the first water pipe 201.

[0050] When the inlet water pressure is lower than the threshold pressure:

[0051] Under the elastic action of the support arm 11, the bracket 1 remains separated from the stepped surface 2014 of the water passage 2011. At this time, the water mainly flows through the main channel 300, that is, it passes sequentially through the water passage cavity 21 of the flow-limiting ring body 2, the water passage 2011 of the first water pipe 201, and the outlet 2012. At the same time, a small portion of the water flows through the secondary channel 400, which is formed by the gap 15 between the bracket 1 and the water passage 2011 and the water passage 2011. The water flowing through the secondary channel 400 will eventually converge at the outlet 2012 for discharge, thus ensuring that the water can still be discharged at a certain flow rate under low pressure environment to meet the flushing requirements under low static pressure.

[0052] When the inlet water pressure reaches or exceeds the threshold pressure:

[0053] The water flow exerts downward pressure on the support 1. When this pressure is sufficient to overcome the elastic force of the support arm 11, the support 1 moves downward and presses against the stepped surface 2014 of the water trough 2011. At this time, the secondary channel 400 is closed, and the water flow can only pass through the main channel 300. Because the flow-limiting ring body 2 in the main channel 300 limits the flow rate, it avoids system failure or resource waste caused by excessive flow rate under high pressure, thus ensuring the consistency and stability of the flushing effect.

[0054] When the valve body 200 is de-energized, the passage between the second water pipe 203 and the first water pipe 201 is closed, and the water flow stops.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A current limiting component, comprising: The flow-limiting ring body (2) is installed inside the first water pipe (201). The flow-limiting ring body (2) and the first water pipe (201) are connected to form a main channel (300). The feature is that it also includes a bracket (1). The bracket (1) is fixedly sleeved on the outside of the flow-limiting ring body (2). One end of the bracket (1) is provided with a water outlet (13) that is connected to the flow-limiting ring body (2) and the first water pipe (201). The first water pipe (201) is provided with a water outlet. The support (1) is movably disposed in the water passage (2011) and the outer circumferential surface of the support (1) is provided with at least one elastically deformable support arm (11). The support arm (11) is used to support the support (1) so that the support (1) is placed in the water passage (2011). A gap (15) is formed between the support (1) and the water passage (2011). The gap (15) is connected to the water passage (2011) to form a secondary channel (400). When the inlet water pressure is lower than the threshold pressure, the bracket (1) separates from the stepped surface (2014) of the water passage (2011); when the inlet water pressure reaches or exceeds the threshold pressure, the bracket (1) moves downward and presses against the stepped surface (2014) of the water passage (2011), and the secondary channel (400) is closed.

2. A current limiting component as described in claim 1, characterized in that, Multiple support arms (11) are provided, and the multiple support arms (11) are distributed at intervals on the outer peripheral surface of the bracket (1).

3. A current limiting component as described in claim 1, characterized in that, The support arm (11) is the first leg (11a), which is fixed to the bracket (1) at a downward angle.

4. A current limiting component as described in claim 1, characterized in that, It also includes several limiting ribs (12), which are spaced apart on the outer periphery of the bracket (1) and are positioned above the support arm (11).

5. A current limiting component as described in claim 4, characterized in that, The support arm (11) is a second leg (11b), which is an arc-shaped strip. One end of the second leg (11b) is fixedly connected to the limiting rib (12), and the other end extends downward to form a protrusion (111b).

6. A current limiting component as described in claim 1, characterized in that, The water inlet (13) has a boss (14) extending inward from its edge. The flow-limiting ring body (2) is fixed to the boss (14). The diameter of the water inlet (13) is smaller than the diameter of the water outlet (2013).

7. A current limiting component as described in claim 1, characterized in that, The flow-limiting ring body (2) and the bracket (1) are integrally formed.

8. A current limiting component as described in claim 1, characterized in that, The flow-limiting ring body (2) and the bracket (1) are separate structures.

9. A solenoid valve, comprising a valve body (200), wherein a second water pipe (203) is provided at one end of the valve body (200) and a first water pipe (201) is provided at the other end, characterized in that, Includes a current limiting component as described in any one of claims 1 to 8.

10. A solenoid valve as described in claim 9, characterized in that, A first sealing ring (205) is installed between the first water pipe (201) and the valve body (200).

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