A dynamically balanced valve

Abstract

The utility model provides a kind of dynamic balance valve, belong to valve field.It solves the problem of existing balance valve maintenance difficulty and unstable differential pressure.This dynamic balance valve, including the valve body that inside formation has fluid passage, flow regulating mechanism, self-balancing mechanism and fixed assembly, flow regulating mechanism includes exposed flow regulating hand wheel, flow regulating lever and stainless steel core, exposed flow regulating hand wheel design, automatic balancing mechanism includes diaphragm, differential pressure control sleeve, flow differential pressure guide rod and spring, fixed assembly includes E-type snap spring and multiple O-rings, wherein, the first end of spring abuts the differential pressure control sleeve, second end abuts valve body inner wall, drive the differential pressure control sleeve by diaphragm response inlet pressure change, linkage flow differential pressure guide rod compresses or releases the spring, drives stainless steel core dynamic regulation valve opening degree.The utility model has the advantages that manual maintenance is simple and differential pressure is stable.

Description

Technical Field

[0001] This utility model belongs to the field of valves, and relates to a balancing valve, and more particularly to a dynamic balancing valve. Background Technology

[0002] In HVAC and industrial fluid systems, hydraulic imbalance leads to uneven flow distribution, significantly reducing system energy efficiency. Traditional static balancing valves rely on repeated adjustments with tools and cannot dynamically compensate for pressure fluctuations, often resulting in flow deviations exceeding ±15%. While electric regulating valves can dynamically control flow, they are complex in structure, costly, require continuous power supply, and pose a significant risk of valve core jamming.

[0003] Existing balancing valves, such as piston-type valves, are sensitive to water quality; impurities can easily accumulate and cause sluggish movement. Furthermore, the flow regulation mechanism is often built-in, requiring disassembly of the valve body for maintenance, making the process cumbersome. They cannot maintain stable flow under pressure fluctuations, and debugging and maintenance rely on tools and specialized personnel. Replacing the valve core and diaphragm is also difficult. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a dynamic balancing valve to solve these problems.

[0005] The objective of this utility model can be achieved through the following technical solution: a dynamic balancing valve, characterized in that it includes a valve body with a fluid channel formed inside, a flow regulating mechanism, a self-balancing mechanism, and a fixing component;

[0006] The flow regulation mechanism includes an exposed flow regulation handwheel, a flow regulation rod threadedly connected to the flow regulation handwheel, and a stainless steel core fixed to the end of the flow regulation rod;

[0007] The self-balancing mechanism includes a diaphragm for sensing the inlet pressure, a differential pressure control sleeve in contact with the diaphragm, a flow differential pressure guide rod penetrating the inside of the differential pressure control sleeve, and a spring sleeved on the flow differential pressure guide rod.

[0008] The fixing assembly includes an E-type retaining ring disposed on the outside of the stainless steel core and multiple O-rings for sealing;

[0009] The spring has its first end abutting against the differential pressure control sleeve and its second end abutting against the inner wall of the valve body. The differential pressure control sleeve is driven by the diaphragm sensing the pressure change at the inlet, which in turn drives the flow differential pressure guide rod to compress or release the spring, thereby causing the stainless steel core to dynamically adjust the valve opening.

[0010] In the aforementioned dynamic balancing valve, the flow regulating handwheel is exposed outside the valve body.

[0011] In the aforementioned dynamic balancing valve, the flow regulating rod and the flow regulating handwheel are connected by a thread.

[0012] In the aforementioned dynamic balancing valve, the valve body is further provided with a diaphragm seat for mounting the diaphragm, and the diaphragm seat is located at the end of the flow differential pressure rod.

[0013] In the aforementioned dynamic balancing valve, an elastic element is also provided on the outside of the stainless steel core. The elastic element is sleeved on the outside of the stainless steel core and abuts against the E-type snap ring.

[0014] In the aforementioned dynamic balancing valve, the stainless steel core moves axially under the drive of the flow differential pressure guide rod to dynamically adjust the opening.

[0015] In one of the aforementioned dynamic balancing valves, the dynamic balancing valve can be electrically or mechanically connected to an electric heating actuator or a proportional motor actuator.

[0016] Compared with existing technologies, this dynamic balance valve structure achieves one-time manual setting and long-term dynamic stability through the mechanical self-feedback principle, and combines reliability, ease of use and intelligent expansion capabilities. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the dynamic balancing valve.

[0018] In the diagram, 1. Valve body; 2. Flow regulating handwheel; 3. Flow regulating rod; 4. Stainless steel core; 5. Diaphragm; 6. Differential pressure control sleeve; 7. Flow and differential pressure guide rod; 8. Spring; 9. Diaphragm seat; 10. Elastic element; 11. E-type snap ring; 12. O-ring. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1As shown, this dynamic balancing valve includes a valve body 1 with an internal fluid channel, a flow regulating mechanism, a self-balancing mechanism, and a fixing assembly. The flow regulating mechanism includes an exposed flow regulating handwheel 2, a flow regulating rod 3 threadedly connected to the flow regulating handwheel 2, and a stainless steel core 4 fixed to the end of the flow regulating rod 3. The exposed flow regulating handwheel 2 design allows for precise manual flow setting without additional tools, lowering the operational threshold. The self-balancing mechanism includes a diaphragm 5 for sensing inlet pressure, a differential pressure control sleeve 6 in contact with the diaphragm 5, and a flow differential pressure guide rod 7 penetrating the interior of the differential pressure control sleeve 6. The spring 8 is sleeved on the flow differential pressure guide rod 7. The fixing components include an E-type retaining ring 11 and multiple O-rings 12 for sealing, which are set on the outside of the stainless steel core 4. The E-type retaining ring 11 and the modular design, such as the detachable diaphragm 5 and stainless steel core 4, facilitate quick disassembly and cleaning, and reduce downtime. The first end of the spring 8 abuts against the differential pressure control sleeve 6, and the second end abuts against the inner wall of the valve body 1. The diaphragm 5 senses the pressure change at the inlet and drives the differential pressure control sleeve 6, which in turn links the flow differential pressure guide rod 7 to compress or release the spring 8, thereby driving the stainless steel core 4 to dynamically adjust the valve opening.

[0021] The flow regulating handwheel 2 is exposed outside the valve body 1. The flow regulating rod 3 is threadedly connected to the flow regulating handwheel 2. The valve body 1 also contains a diaphragm seat 9 for mounting the diaphragm 5, improving pressure sensing accuracy; the diaphragm seat 9 is located at the end of the flow differential pressure rod. An elastic element 10 is also provided outside the stainless steel core 4, which is sleeved on the outside of the stainless steel core 4 and abuts against the E-type retaining ring 11. The stainless steel core 4 moves axially under the drive of the flow differential pressure guide rod 7 to dynamically adjust the opening. The dynamic balancing valve can be electrically or mechanically connected to an electric heating actuator or a proportional motor actuator. The stainless steel core 4 is corrosion-resistant, and the O-ring 12 provides a leak-proof seal.

[0022] Working principle

[0023] The flow rate is set manually by rotating the exposed flow adjustment handwheel 2, which drives the flow adjustment rod 3 axially via a threaded transmission. The stainless steel core 4 at the end of the rod moves accordingly, preseting the initial valve opening and determining the target flow rate value. Sensing pressure changes, when the inlet pressure fluctuates, the diaphragm 5 detects the pressure change and pushes the differential pressure control sleeve 6. The differential pressure control sleeve 6 drives the flow differential pressure guide rod 7, which runs through it, compressing or releasing the sleeved spring 8, one end of which rests against the inner wall of the valve body 1. The guide rod, in conjunction with the stainless steel core 4, moves axially, dynamically adjusting the valve opening and thus regulating the opening in real time. Under high pressure, the diaphragm 5 pushes the guide rod to compress the spring 8, causing the stainless steel core 4 to open the valve slightly, limiting the increase in flow. Under low pressure, the spring 8 releases, pushing the guide rod to move in the opposite direction, causing the stainless steel core 4 to open the valve wider, maintaining a stable flow rate.

[0024] The dynamic balancing valve drives the diaphragm 5 to move by the pressure change at the inlet, which in turn moves the differential pressure control sleeve 6 and the flow differential pressure guide rod 7. The axial position of the stainless steel core 4 is dynamically adjusted by the deformation feedback force of the spring 8, thereby changing the valve opening and finally realizing closed-loop control to automatically restore the set value of the flow.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0026] Although this document uses a considerable amount of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A dynamic balancing valve, characterized in that, It includes a valve body (1) with internal fluid channels, a flow regulating mechanism, a self-balancing mechanism, and a fixing component; The flow regulation mechanism includes an exposed flow regulation handwheel (2), a flow regulation rod (3) threadedly connected to the flow regulation handwheel (2), and a stainless steel core (4) fixed to the end of the flow regulation rod (3). The self-balancing mechanism includes a diaphragm (5) for sensing the pressure at the inlet, a differential pressure control sleeve (6) in contact with the diaphragm (5), a flow differential pressure guide rod (7) penetrating the inside of the differential pressure control sleeve (6), and a spring (8) sleeved on the flow differential pressure guide rod (7). The fixing assembly includes an E-type retaining ring (11) disposed outside the stainless steel core (4) and a plurality of O-rings (12) for sealing. The first end of the spring (8) abuts against the differential pressure control sleeve (6), and the second end abuts against the inner wall of the valve body (1). The diaphragm (5) senses the change in the inlet pressure and drives the differential pressure control sleeve (6), which in turn links the flow differential pressure guide rod (7) to compress or release the spring (8), thereby driving the stainless steel core (4) to dynamically adjust the valve opening.

2. The dynamic balancing valve according to claim 1, characterized in that, The flow regulating handwheel (2) is exposed outside the valve body (1).

3. The dynamic balancing valve according to claim 1, characterized in that, The flow regulating rod (3) and the flow regulating handwheel (2) are connected by a thread.

4. A dynamic balancing valve according to claim 1, characterized in that, The valve body (1) is also provided with a diaphragm seat (9) for mounting the diaphragm (5), and the diaphragm seat (9) is located at the end of the flow differential pressure rod.

5. A dynamic balancing valve according to claim 1, characterized in that, The stainless steel core (4) is also provided with an elastic element (10) on the outside, which is sleeved on the outside of the stainless steel core (4) and abuts against the E-type snap ring (11).

6. A dynamic balancing valve according to claim 1, characterized in that, The stainless steel core (4) moves along its axial direction under the drive of the flow differential pressure guide rod (7) to dynamically adjust the opening.

7. A dynamic balancing valve according to claim 1, characterized in that, The dynamic balancing valve can be electrically or mechanically connected to an electric heating actuator or a proportional motor actuator.

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