Flow regulating valve

Abstract

The utility model relates to the technical field of regulating valves, and provides a flow regulating valve which comprises a valve seat and a valve element, valve holes are formed in the two ends of the valve seat in a communicating mode, and the valve element is provided with element holes closed or communicated with the valve holes. A rotating handle is arranged at the top of the valve element, and the rotating handle and the valve element are integrally formed; a conical cavity perpendicular to the valve hole is formed in the middle of the valve seat, and a conical surface matched with the conical cavity is arranged on the outer side face of the valve element; an annular limiting groove is formed in the bottom end of the inner side face of the valve seat, and a limiting buckle clamped with the annular limiting groove is arranged at the bottom end of the outer side face of the valve element. Therefore, the flow regulating valve only comprises the valve seat and the valve core, and the valve core and the rotating handle are integrally formed, so that the structural design of the flow regulating valve is simplified, the structure of the flow regulating valve is simpler, and the efficiency of batch production can be improved. And moreover, the conical surface valve core is matched with the conical cavity, so that micro-adjustment can be realized, and the flow adjusting sensitivity of the flow adjusting valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a flow regulating valve. Background Art

[0002] The flow control valve is a simple flow control device, which is widely used in pipe networks to set the flow, so that the flow of the pipe network can be distributed according to demand, and can eliminate the problems of hydraulic imbalance and uneven heating and cooling in water systems such as centralized heating (cooling). In the prior art, the flow control valve generally includes a valve cover, a valve core and a valve seat. The valve cover is connected to the valve seat through a thread, and the valve core is set in the valve seat by the valve cover, so that the valve core rotates in the valve seat to achieve flow regulation.

[0003] As described in the patent application number 201310198372.5, titled "A method for limiting the maximum flow and preventing blockage of a flow control valve", it includes a handle, a valve core, a valve cover, a sealing ring and a valve body. The handle is connected to the valve core to adjust the rotation of the valve core. The valve core rotates on the valve cover through a thread, and the thread causes the valve core to move relative to the valve body when it rotates. The valve cover is installed on the valve body, and the conical valve stem of the valve core cooperates with the cylindrical throttle hole of the valve body. Turning the handle causes the valve core to move relative to the valve body to achieve flow regulation. Its structure is relatively complex, which is not conducive to efficient mass production. Utility Model Content

[0004] The utility model aims to provide a flow regulating valve, aiming to improve the problem of complex structure of the existing flow regulating valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A flow control valve comprises a valve seat and a valve core, wherein two ends of the valve seat are connected to each other with valve holes, and the valve core is provided with a core hole closed or connected to the valve hole;

[0007] A rotating handle is provided on the top of the valve core, and the rotating handle and the valve core are integrally formed;

[0008] A tapered cavity is provided in the middle of the valve seat perpendicular to the valve hole, and a tapered surface matching the tapered cavity is provided on the outer side of the valve core;

[0009] The bottom end of the inner side surface of the valve seat is provided with an annular limiting groove, and the bottom end of the outer side surface of the valve core is provided with a limiting buckle engaged with the annular limiting groove.

[0010] Preferably, the limit buckles are arranged along the bottom end of the outer side surface of the valve core in a full circle or at equal intervals.

[0011] Preferably, the limit buckle is provided with a chamfer in a direction inclined away from the rotating handle, and the bottom of the valve seat is provided with an avoidance arc surface whose diameter gradually increases toward the cavity bottom and extends to the annular limit buckle groove.

[0012] Preferably, an annular sealing groove is provided on the outer side surface of the valve core, and the annular sealing groove is located between the rotating handle and the core hole;

[0013] An O-shaped sealing ring is arranged in the annular sealing groove.

[0014] Preferably, the O-ring is a rubber ring or a silicone ring.

[0015] Preferably, the rotating handle is an arc-shaped handle.

[0016] Preferably, the taper of the conical surface or the conical cavity is 1:(4-5).

[0017] Preferably, the valve seat and the valve core are made of PP, ABS, PE or PC.

[0018] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0019] 1. The conical surface is used to fit the conical cavity for sealing, which can ensure better sealing of the flow control valve. Compared with the cylindrical valve core, at the same height, the side length of the valve core with a conical surface is longer, so that the adjustable flow range of the flow control valve is larger, micro-adjustment can be achieved, and the sensitivity of the flow control valve adjustment is improved.

[0020] 2. The flow regulating valve of the utility model only includes a valve seat and a valve core, and the valve core and the rotating handle are integrally formed. The connection between the valve core and the valve seat is achieved by adopting a limit buckle in conjunction with an annular limit groove, thereby simplifying the structural design of the flow regulating valve, making its structure simpler and being able to improve the efficiency of mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the flow control valve described in the utility model;

[0022] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0023] Figure 3 This is a schematic diagram of the overall structure of the flow control valve described in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the valve core of the flow control valve described in the utility model;

[0025] Figure 5It is a cross-sectional view of the valve seat of the flow regulating valve described in the utility model.

[0026] Description of reference numerals:

[0027] 10. Valve seat;

[0028] 101, valve hole; 102, tapered cavity; 103, annular limit groove; 104, avoidance arc surface;

[0029] 11. Valve core;

[0030] 111, core hole; 112, rotating handle; 113, cone surface; 114, limit buckle; 1141, chamfer; 115, annular sealing groove; 1151, O-ring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] In addition, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] When an element is referred to as being “fixed to” or “disposed on” or “provided on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0035] Example

[0036] Please refer to Figure 1-Figure 5As shown, this embodiment provides a flow control valve, including a valve seat 10 and a valve core 11, wherein the valve seat 10 is provided with a valve hole 101 at both ends, the valve core 11 is provided with a core hole 111 closed or connected with the valve hole 101, and a rotating handle 112 is provided on the top of the valve core 11. Specifically, the valve seat 10 and the valve core 11 cooperate with each other, and when the flow control valve is closed, the valve core 11 completely closes the valve hole 101, so that the flow control valve is in a closed state; the rotating handle 112 is rotated to make the valve core 11 and the valve seat 10 rotate relative to each other, so that the valve hole 101 and the core hole 111 overlap as a whole or partially to form channels with different flow areas, and water flows through the channels to form flow rates of different sizes. Among them, the rotating handle 112 and the valve core 11 are integrally formed, which can improve the integrity and structural strength of the valve core 11.

[0037] In addition, a conical cavity 102 is provided in the middle of the valve seat 10 perpendicular to the valve hole 101, and a conical surface 113 adapted to the conical cavity 102 is provided on the outer side surface of the valve core 11. The conical surface 113 is used to fit the conical cavity 102 for sealing, which can ensure that the flow control valve has better sealing performance. Compared with the cylindrical valve core 11, at the same height, the side length of the valve core 11 with the conical surface 113 is longer, so that the adjustable flow range of the flow control valve is larger, micro-adjustment can be achieved, and the adjustment sensitivity of the flow control valve is improved.

[0038] Furthermore, an annular limit groove 103 is provided at the bottom end of the inner side surface of the valve seat 10, and a limit buckle 114 engaged with the annular limit groove 103 is provided at the bottom end of the outer side surface of the valve core 11. The limit buckle 114 protrudes and is engaged with the annular limit groove 103, thereby axially limiting the valve core 11 to prevent the connection between the valve seat 10 and the valve core 11 from loosening during use of the flow regulating valve, thereby ensuring the normal operation of the flow regulating valve.

[0039] In this way, the flow regulating valve in this embodiment only includes a valve seat 10 and a valve core 11, and the valve core 11 is integrally formed with a rotating handle 112. The connection between the valve core 11 and the valve seat 10 is achieved by adopting a limiting buckle 114 in conjunction with the annular limiting groove 103, thereby simplifying the structural design of the flow regulating valve, making its structure simpler, and improving the efficiency of mass production.

[0040] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the limit buckles 114 are arranged along the bottom end of the outer side surface of the valve core 11 in a full circle or at equal intervals.

[0041] Specifically, the limiting buckle 114 is arranged in a conical ring shape that matches the conical surface 113 of the valve core 11. The limiting buckle 114 is arranged in a whole circle to improve the connection strength between the valve core 11 and the valve seat 10; and the limiting buckles 114 are arranged at equal intervals, and there is a deformation gap between adjacent limiting buckles 114, which facilitates the insertion of the valve core 11 into the valve seat 10. It should be noted that the material of the valve seat 10 and the valve core 11 has a certain strength and toughness, so that the limiting buckle 114 can extend into the valve seat 10 and buckle with the annular limiting groove 103.

[0042] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in this embodiment, the limit buckle 114 is inclined and provided with a chamfer 1141 in the direction away from the rotating handle 112. The inclined surface of the chamfer 1141 is adapted to the conical surface 113 of the conical cavity 102 of the valve seat 10, so as to facilitate the valve core 11 to be extended into the conical cavity 102 of the valve seat 10. Since the diameter of the conical cavity 102 gradually decreases toward the bottom of the cavity, an avoidance arc surface 104 is provided at the bottom of the valve seat 10, the diameter of which gradually increases toward the bottom of the cavity and extends to the annular limit buckle groove, so as to provide avoidance space for the extension of the limit buckle 114, so as to ensure that the limit buckle 114 can be smoothly inserted into the annular limit groove 103.

[0043] like Figure 1 and Figure 4 As shown, in this embodiment, an annular sealing groove 115 is provided on the outer surface of the valve core 11, and the annular sealing groove 115 is located between the rotating handle 112 and the core hole 111, and an O-ring 1151 is provided in the annular sealing groove 115, and the O-ring 1151 abuts against the inner surface of the valve seat 10, thereby ensuring the sealing effect and avoiding water leakage in the flow regulating valve.

[0044] In a preferred embodiment, the O-ring 1151 is a rubber ring or a silicone ring. Since both the rubber ring and the silicone ring have good resilience, insulation, water-proofness and plasticity, they can be embedded in the annular sealing groove 115 for sealing. The O-ring 1151 is pressed against the inner side of the valve seat 10 and generates contact pressure to achieve sealing.

[0045] like Figure 1 , Figure 3 and Figure 4 As shown, the rotary handle 112 in this embodiment is an arc-shaped handle. The arc-shaped handle protrudes from the top of the valve core 11, which is convenient for rotating the valve core 11, so that the valve core 11 and the valve seat 10 rotate relative to each other, thereby adjusting the flow rate.

[0046] like Figure 4 and Figure 5As shown, in this embodiment, the taper of the conical surface 113 or the conical cavity 102 is 1:(4-5).

[0047] Specifically, the taper of the conical surface 113 and the conical cavity 102 can be adjusted within the range of 1:(4-5) according to specific application requirements. Different tapers will affect the sensitivity of flow regulation. When the height is the same, the larger the taper, the longer the side length of the valve core 11 with the conical surface 113, the greater the sensitivity, and the stronger the ability of micro-adjustment. Setting an appropriate taper can meet different flow regulation requirements.

[0048] like Figure 1-Figure 5 As shown, the material of the valve seat 10 and the valve core 11 in this embodiment is PP (Chinese name: polypropylene), ABS (Chinese name: acrylonitrile-butadiene-styrene copolymer), PE (Chinese name: polyethylene) or PC (Chinese name: polycarbonate). The plastic material is light in weight and has good strength, has certain toughness, and is easy to process and produce in batches.

[0049] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model 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 by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A flow control valve, characterized in that: It comprises a valve seat and a valve core, wherein both ends of the valve seat are connected with valve holes, and the valve core is provided with a core hole closed or connected with the valve hole; A rotating handle is provided on the top of the valve core, and the rotating handle and the valve core are integrally formed; A tapered cavity is provided in the middle of the valve seat perpendicular to the valve hole, and a tapered surface matching the tapered cavity is provided on the outer side of the valve core; The bottom end of the inner side surface of the valve seat is provided with an annular limiting groove, and the bottom end of the outer side surface of the valve core is provided with a limiting buckle engaged with the annular limiting groove.

2. The flow control valve according to claim 1, characterized in that: The limit buckles are arranged along the bottom end of the outer side surface of the valve core in a full circle or at equal intervals.

3. The flow control valve according to claim 2, characterized in that: The limiting buckle is provided with a chamfer in a direction inclined away from the rotating handle, and the bottom of the valve seat is provided with an avoidance arc surface whose diameter gradually increases toward the cavity bottom and extends to the annular limiting groove.

4. The flow control valve according to claim 1, characterized in that: An annular sealing groove is provided on the outer side surface of the valve core, and the annular sealing groove is located between the rotating handle and the core hole; An O-shaped sealing ring is arranged in the annular sealing groove.

5. The flow control valve according to claim 4, characterized in that: The O-shaped sealing ring is a rubber ring or a silicone ring.

6. The flow control valve according to claim 1, characterized in that: The rotating handle is an arc-shaped handle.

7. The flow control valve according to claim 1, characterized in that: The taper of the conical surface or the conical cavity is 1:(4-5).

8. The flow control valve according to claim 1 or 4, characterized in that: The valve seat and the valve core are made of PP, ABS, PE or PC.

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