Current limiting device

Abstract

The invention discloses a flow limiting device which comprises a ring body part, a flow limiting part, a support and a sealing component, the ring body part is arranged outside the flow limiting part in a sleeving mode, the ring body part and the flow limiting part are fixedly connected through the support, and the ring body part, the flow limiting part and the support are of an integrated structure; the ring body part comprises a water inlet end and a water outlet end, the support is provided with a limiting face facing the water outlet end, an annular groove is formed among the limiting face, the inner circumference of the ring body part and the outer circumference of the flow limiting part, and the sealing part is embedded into the annular groove and arranged outside the flow limiting part in a sleeving mode. The device is simple in structure, convenient to disassemble and capable of improving the product percent of pass.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid control, and more particularly to a flow limiting device. Background Art

[0002] The flow limiting device is usually set in the water system, and the flow can be limited and adjusted through the flow limiting device, so that the water flow is stabilized within a range under different water pressures. The current flow limiting device has many parts and is relatively complicated to assemble. Summary of the invention

[0003] The object of the present invention is to solve the above-mentioned problem and provide a current limiting device which has a simple structure, is easy to disassemble and can improve the product qualification rate.

[0004] The above technical purpose of the present invention is achieved through the following technical scheme: a flow limiting device, including a flow limiting body and a sealing component, the flow limiting body includes a water inlet end and a water outlet end, an annular groove is provided on the end face of the water outlet end, and a plurality of flow holes are provided on the water inlet end, and the flow holes are connected to the annular groove; the sealing component is annular, and the sealing component is embedded in the annular groove.

[0005] The scheme has a simple structure. The ring body, the flow limiting part and the bracket adopt an integrated structure and cooperate with the sealing component. The main body of the flow limiting device is two parts, which reduces the number of accessories and facilitates assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic diagram of the structure of a current limiting device in this embodiment Figure 1 ;

[0007] Figure 2 A schematic diagram of the structure of a current limiting device in this embodiment Figure 2 ;

[0008] Figure 3 is a cross-sectional view of a current limiting device in this embodiment;

[0009] Figure 4 Schematic diagram of the structure of the ring body in this embodiment;

[0010] Figure 5 is a first cross-sectional view of the ring body in this embodiment;

[0011] Figure 6 is a second cross-sectional view of the ring body in this embodiment;

[0012] Figure 7 is a three-dimensional diagram of the current limiting portion in this embodiment;

[0013] Figure 8 is a cross-sectional schematic diagram of the current limiting portion in this embodiment;

[0014] Fig. 9 Schematic diagram of the installation structure of the current limiting device in this embodiment.

[0015] Figure numerals: 1. current limiting body; 10. ring body; 11. water inlet end; 12. water outlet end; 13. annular groove; 131. groove bottom surface; 132. arc transition; 14. flow hole; 15. current limiting part; 151. convex tooth; 152. depression; 16. guide protrusion; 17. connecting part; 18. clamping part; 2. sealing component; 3. current limiting seat; 31. inner hole; 32. retaining ring; 33. water outlet hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] This embodiment discloses a current limiting device, referring to Figure 1-3 As shown, it includes a flow limiting body 1 and a sealing component 2. The flow limiting body 1 includes a water inlet end 11 and a water outlet end 12. An annular groove 13 is provided on the end surface of the water outlet end 12. The flow limiting body 1 at the inner peripheral portion of the annular groove 13 forms a flow limiting portion 15, and the flow limiting body 1 at the outer peripheral portion of the annular groove 13 forms a ring body portion 10. A plurality of flow holes 14 are provided in the flow limiting body 1. The flow holes 14 are arranged in the direction from the water inlet end 11 to the water outlet end 12, wherein one end of the flow hole 14 is located at the end surface of the water inlet end 11, and the other end is connected to the ring. Water can flow through the flow holes 14 at the water inlet end 11, circulate into the annular groove 13 at the water outlet end 12, and then flow out from the annular groove 13.

[0018] The sealing component 2 is an annular structure, and can be an O-ring made of rubber material or other components that can play a sealing role. The shape and size of the sealing component 2 are adapted to the annular groove 13, and can be embedded in the annular groove 13, and the flow limiting portion 15 of the flow limiting body 1 is located on the inner periphery of the sealing component 2, and the flow limiting column and the sealing component 2 are adapted to each other, so as to play a flow limiting role.

[0019] like Figure 4-5As shown, in the current limiting body 1, the ring body 10, the current limiting part 15 and the connecting part 17 between the ring body 10 and the current limiting part 15 are all integrated structures. During production and processing, integrated processing is adopted, and the relative positions of the ring body 10 and the current limiting part 15 are fixed, which can ensure the coaxiality of the ring body 10 and the current limiting part 15, avoid assembly errors, and make the performance of the current limiting device better. When disassembling the current limiting device, the entire current limiting body 1 can be disassembled, and because the sealing component 2 is embedded in the annular groove 13 of the current limiting body 1, it can also be disassembled at the same time, which is convenient for the integrated disassembly and assembly of the current limiting device.

[0020] like Figure 2 As shown, in the flow limiting body 1, the ring body 10 and the flow limiting part 15 are connected by a connecting part 17, and the connecting part 17 can adopt various structures, which can connect and fix the ring body 10 and the flow limiting part 15 and have sufficient stability. For example, the connecting part 17 can be set as a plurality of lines, distributed on the periphery of the flow limiting part 15, and form flow holes 14 between adjacent brackets for the normal flow of liquid.

[0021] The annular groove 13 includes a groove bottom surface 131, the groove bottom surface 131 faces the side of the water outlet end 12, and the limiting surface is substantially perpendicular to the axis of the annular groove 13. The sealing component 2 is embedded in the annular groove 13, and in the axial direction, the sealing component 2 abuts against the groove bottom surface 131 of the annular groove 13 to achieve axial positioning.

[0022] like Figure 6 As shown, a circular arc transition 132 can be used between the groove bottom surface 131 of the annular groove 13 and the inner periphery of the annular portion, and the curvature of the circular arc transition 132 is adapted to the cross-sectional profile of the sealing component 2. The circular arc transition 132 can support and limit the sealing component 2, making the sealing component 2 more stable in the annular groove 13.

[0023] The flow limiting part 15 is generally in a columnar structure, and a plurality of convex teeth 151 are distributed in the circumferential direction of the outer periphery of the flow limiting part 15. The convex teeth 151 are integrally connected with the flow limiting part 15, and each convex tooth 151 and the flow limiting part 15 are located at the inner periphery of the sealing component 2. Recesses 152 are formed between adjacent convex teeth 151, and the gap between the recesses 152 and the inner periphery of the sealing component 2 allows water to pass through. When water flows through the flow limiting body 1, according to the pressure of the flowing water, the sealing component 2 will be compressed to different degrees with the convex teeth 151 outside the flow limiting part 15 after being pressurized, thereby changing the size of the channel through which water can flow and thus achieving flow limiting adjustment.

[0024] The protruding teeth 151 protrude in the radial direction of the flow limiting portion 15 and have a certain radial protruding height. The protruding height of the protruding teeth 151 has a great influence on the flow limiting effect of the flow limiting device. The combination of different tooth shapes can change the size of the gap between the protruding teeth 151 and the sealing component 2, thereby making the sealing component 2 produce different flow limiting states under different pressure conditions.

[0025] like Figure 4 As shown, the protruding heights of the convex teeth 15121 are consistent, and the convex teeth 151 are arranged in a row around the axis of the limiting portion 15; the convex teeth 151 are evenly distributed, and the widths of the recesses 152 between adjacent convex teeth 151 are also consistent.

[0026] like Figure 7 , 8 As shown, the height of the protruding teeth 151 of the protruding teeth 15121 may also be inconsistent, and the protruding height may have at least two heights; and the protruding teeth 151 of different protruding heights may be alternately distributed along the circumferential direction, thereby being able to form recesses 152 with different parameters on the periphery of the flow limiting portion 15, which can cooperate with the sealing component 2 to form a variety of flow limiting states.

[0027] like Figure 3 As shown, a guide protrusion 16 is formed on the end surface of the water outlet end 12 of the flow limiting body 1. Each flow hole 14 of the water outlet end 12 is located on the periphery of the guide protrusion 16. The guide protrusion 16 protrudes along the axial direction, and the height of the axial protrusion gradually decreases toward the direction of each flow hole 14. Specifically, a spherical protrusion structure can be adopted. When the water flow hits the guide protrusion 16, the direction of the water flow can be dispersed, and the water flow is dispersed in the direction of the flow hole 14.

[0028] In this embodiment, the current limiting device also has a current limiting seat 3, which supports the entire ring body 10 and can also limit the sealing component 2 inside the ring body 10 so that it can always remain inside the ring body 10 under the impact of water flow.

[0029] like Fig. 9 As shown, the flow limiting seat 3 is also annular in structure and is installed in the flow channel of the water flow. The flow limiting seat 3 has an inner hole 31 , and the inner circumference of the inner hole 31 is integrally connected to a retaining ring 32 , and a water outlet 33 is provided in the center of the retaining ring 32 .

[0030] The aperture of the inner hole 31 matches the outer circumference of the flow limiting body 1 . The flow limiting body 1 is installed in the inner hole 31 of the flow limiting seat 3 . The water outlet end 12 of the flow limiting body 1 abuts against the retaining ring 32 to achieve position limiting.

[0031] A clamping portion is formed on the outer periphery of the flow limiting body 1, which gradually expands in the direction away from the water outlet end 12 and is roughly a frustum-shaped structure, so that the outer peripheral contour of the water inlet end 11 of the ring body 10 is slightly larger than the inner hole 31 of the flow limiting seat 3, and the flow limiting body 1 can be clamped after being installed in the flow limiting seat 3.

[0032] When the ring body 10 is installed into the current limiting seat 3, the water outlet end 12 of the ring body 10 can smoothly enter the inner hole 31. As the ring body 10 is gradually extended, the position of the clamping part of the ring body 10 gradually enters the inner hole 31 of the current limiting seat 3, until the water inlet end 11 of the ring body 10 enters the inner hole 31 of the current limiting seat 3. The ring body 10 will be clamped with the inner hole 31 of the current limiting seat 3 to achieve positioning, thereby maintaining the installation stability of the ring body 10 and the sealing component 2.

[0033] The water outlet hole 33 in the middle of the retaining ring 32 is coaxial with the ring body 10 and the flow limiting part 15, and the space of the water outlet hole 33 is larger than the outer peripheral contour of the flow limiting part 15. The flow limiting part 15 and the convex teeth 151 on the outer periphery of the flow limiting part 15, the orthographic projections in the axial direction, all fall within the water outlet hole 33.

[0034] The retaining ring 32 covers most of the annular groove 13, thereby limiting the sealing component 2 in the annular groove 13. Specifically, the aperture of the water outlet 33 is slightly larger than the inner diameter of the sealing component 2 and smaller than the middle diameter of the sealing component 2. The retaining ring 32 can stably block the sealing component 2 to ensure that the sealing component 2 will not be flushed out, and the flow limiting device can stably achieve the flow limiting effect.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A current limiting device, characterized in that: The invention comprises a flow limiting body (1) and a sealing component (2); the flow limiting body (1) comprises a water inlet end (11) and a water outlet end (12); an annular groove (13) is provided on the end surface of the water outlet end (12); the water inlet end (11) is provided with a plurality of flow holes (14); the flow holes (14) are connected to the annular groove (13); the sealing component (2) is annular and is embedded in the annular groove (13).

2. A current limiting device according to claim 1, characterized in that: The flow limiting body (1) on the inner periphery of the annular groove (13) forms a flow limiting portion (15); the outer periphery of the flow limiting portion (15) is integrally connected with a plurality of convex teeth (151); recesses (152) are formed between adjacent convex teeth (151); and each of the convex teeth (151) is located on the inner periphery of the sealing component (2).

3. A current limiting device according to claim 2, characterized in that: The protruding teeth (151) protrude in the radial direction of the flow limiting portion (15), and the protruding height is consistent.

4. A current limiting device according to claim 2, characterized in that: The protruding teeth (151) protrude in the radial direction of the flow limiting portion (15), and the protruding height has at least two heights.

5. A current limiting device according to claim 1, characterized in that: The water inlet end (11) is provided with a guide protrusion (16), and a plurality of the flow holes (14) are located on the periphery of the guide protrusion (16); the protruding height of the guide protrusion (16) gradually decreases towards the flow holes (14).

6. A current limiting device according to claim 1, characterized in that: The flow limiting body (1) at the outer periphery of the annular groove (13) forms an annular body portion (10); the annular groove (13) comprises a groove bottom surface (131); the groove bottom surface (131) faces the water inlet end (11); and a circular arc transition (132) is formed between the groove bottom surface (131) and the annular body portion (10).

7. A current limiting device according to claim 1, characterized in that: The invention also comprises a flow limiting seat (3), wherein the flow limiting seat (3) comprises an inner hole (31), the inner circumference of the inner hole (31) is integrally connected to a retaining ring (32), and a water outlet hole (33) is formed at the center of the retaining ring (32); the flow limiting body (1) is arranged in the inner hole (31), and the water outlet end (12) of the flow limiting body (1) abuts against the retaining ring (32).

8. A current limiting device according to claim 7, characterized in that: The orthographic projection of the flow limiting portion (15) in the axial direction falls within the water outlet hole (33); the diameter of the water outlet hole (33) is larger than the inner diameter of the sealing component (2) and smaller than the median diameter of the sealing component (2).

9. A current limiting device according to claim 7, characterized in that: A clamping portion is formed on the outer periphery of the current limiting body (1), and the clamping portion is clamped tightly with the inner hole (31) of the current limiting seat (3).

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