Adjusting valve with high adjusting precision

Abstract

The utility model relates to the technical field of fluid machinery, in particular to an adjusting valve with high adjusting precision, which comprises a valve body, a central valve leaf is arranged in the middle of the valve body, first side valve leaves are symmetrically connected to two sides of the central valve leaf, and second side valve leaves are connected to the side edges of the first side valve leaves. And the side edge of the second side valve leaf is connected with a third side valve leaf. The multi-level valve leaf is adopted in the regulating valve to replace a traditional one-level valve leaf to regulate the flow of fluid, the multi-level valve leaf can enable the fluid to be evenly distributed into different valve leaves when the fluid passes through the regulating valve, and the opening degree of each valve leaf can be controlled and regulated in real time according to the flow. According to the multi-stage flow regulating valve, flow regulation in a larger range is achieved, the regulating range of the regulating valve is widened, meanwhile, flow division and pressure reduction can be achieved through the multi-stage valve leaves, the fluid impact and vortex phenomena are reduced, the fluid distribution uniformity is improved, and the flow control requirements under different working conditions are met.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid machinery, in particular to a regulating valve with high regulating precision. Background Technique

[0002] A regulating valve is used to regulate process parameters such as the flow rate, pressure, temperature, and liquid level of the medium in the field of industrial automation process control. According to the control signal in the automation system, the opening of the valve is adjusted, so as to realize the regulation of the flow rate, pressure, temperature, and liquid level of the medium.

[0003] In traditional regulating valves, a single-stage valve flap is usually used to control the opening degree, that is, there is only one sealing surface between the valve flap and the valve body. As a result, the valve flap is easily impacted and worn by the medium, resulting in fluctuations or instability in flow control, causing the valve flap to deflect during movement, and thus unable to ensure the stability and precision of the system during operation. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and a regulating valve with high regulating precision is proposed.

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

[0006] A regulating valve with high regulating precision includes a valve body. A central valve flap is arranged in the middle of the valve body. First side valve flaps are symmetrically connected to both sides of the central valve flap. Second side valve flaps are connected to the sides of the first side valve flaps. Third side valve flaps are connected to the sides of the second side valve flaps. A multi-level valve flap structure is jointly formed among the central valve flap, the first side valve flaps, the second side valve flaps, and the third side valve flaps;

[0007] Arch-shaped grooves are opened at the bottoms of the central valve flap, the first side valve flaps, the second side valve flaps, and the third side valve flaps. Connecting rods are fixedly connected inside the arch-shaped grooves. Two guiding balls are symmetrically arranged at both ends of the connecting rods. A number of guiding chutes are opened on both sides of the inner wall of the valve body. The guiding balls are located inside the guiding chutes and move along the trajectories of the guiding chutes.

[0008] Preferably, connecting corners are fixedly connected to the outer walls of the central valve flap, the first side valve flaps, the second side valve flaps, and the third side valve flaps. Every two connecting corners are movably connected by a connecting rod. The top of the connecting rod is fixedly connected through a supporting rod.

[0009] Preferably, a fixing frame is fixedly connected to the outer wall of the valve body. A driving handle is arranged on one side of the fixing frame. A central connecting shaft is fixedly connected to the end of the driving handle. The end of the central connecting shaft far from the driving handle penetrates through the fixing frame and extends into the valve body and is fixedly connected to the bottom of the central valve flap.

[0010] Preferably, an anti-slip protective sleeve is sleeved on the outer surface of the driving handle.

[0011] The beneficial effects of the utility model are as follows:

[0012] By using multi-level valve pages in the regulating valve to replace the traditional single-layer valve page for regulating the fluid flow rate, the use of multi-level valve pages can enable the fluid to be evenly distributed into different valve pages when passing through the regulating valve. The opening degree of each valve page can be controlled and adjusted in real time according to the flow rate size, so as to achieve a larger range of flow rate regulation, improve the regulation range of the regulating valve. At the same time, the use of multi-level valve pages can achieve flow splitting and pressure reduction, reduce fluid impact and eddy current phenomena, improve the distribution uniformity of the fluid, and meet the flow control requirements under different working conditions.

[0013] By arranging guide balls at the bottom of the multi-level valve pages and using the guide balls to move along the track of the guide chute on the inner wall of the regulating valve, the guide balls can always move on the designed track, thus avoiding the situation that each valve page deviates from the track during the flipping process, enabling each valve page to move more stably and flexibly during the regulation process, reducing the fluctuation and swing of the valve pages, and thus achieving more precise flow rate regulation, improving the overall flexibility and stability and regulation accuracy of the regulating valve. Description of the Drawings

[0014] Figure 1 It is the overall structural schematic diagram of a regulating valve with high regulation accuracy proposed by the utility model;

[0015] Figure 2 It is a regulating valve with high regulation accuracy proposed by the utility model Figure 1 The enlarged structural schematic diagram at point A;

[0016] Figure 3 It is the bottom structural schematic diagram of a regulating valve with high regulation accuracy proposed by the utility model;

[0017] Figure 4 It is the multi-level valve page structural schematic diagram of a regulating valve with high regulation accuracy proposed by the utility model.

[0018] In the figure:

[0019] 1, valve body; 2, central valve page; 3, first side valve page; 4, second side valve page; 5, third side valve page; 6, arched groove; 7, connecting rod; 8, guide ball; 9, guide chute; 10, connecting angle; 11, connecting rod; 12, support rod; 13, fixing frame; 14, driving handle; 15, central connecting shaft. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] The content not detailed in this specification belongs to the prior art well-known to those skilled in the art.

[0022] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the accompanying drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0023] Embodiment:

[0024] Refer to Figures 1-3 , a regulating valve with high adjustment accuracy, including a valve body 1. A central valve leaf 2 is arranged in the middle of the valve body 1. First side valve leaves 3 are symmetrically connected to both sides of the central valve leaf 2. A second side valve leaf 4 is connected to the side of the first side valve leaf 3. A third side valve leaf 5 is connected to the side of the second side valve leaf 4. A multi-level valve leaf structure is jointly formed among the central valve leaf 2, the first side valve leaf 3, the second side valve leaf 4, and the third side valve leaf 5;

[0025] Arc-shaped grooves 6 are opened at the bottoms of the central valve leaf 2, the first side valve leaf 3, the second side valve leaf 4, and the third side valve leaf 5. A connecting rod 7 is fixedly connected inside the arc-shaped groove 6. Two guiding balls 8 are symmetrically arranged at both ends of the connecting rod 7. A number of guiding chutes 9 are opened on both sides of the inner wall of the valve body 1. The guiding balls 8 are located inside the guiding chutes 9 and move along the trajectory of the guiding chutes 9.

[0026] Connecting corners 10 are fixedly connected to the outer walls of the central valve leaf 2, the first side valve leaf 3, the second side valve leaf 4, and the third side valve leaf 5. Every two connecting corners 10 are movably connected by a connecting rod 11. The top of the connecting rod 11 is connected and fixed by a support rod 12.

[0027] A fixing frame 13 is fixedly connected to the outer wall of the valve body 1. A driving handle 14 is arranged on one side of the fixing frame 13. A central connecting shaft 15 is fixedly connected to the end of the driving handle 14. The end of the central connecting shaft 15 away from the driving handle 14 penetrates through the fixing frame 13 and extends into the inside of the valve body 1 and is connected and fixed to the bottom of the central valve leaf 2.

[0028] An anti-slip protective sleeve is sleeved on the outer surface of the driving handle 14.

[0029] In this embodiment, when it is necessary to adjust the fluid flow rate, first rotate the driving handle 14. When the driving handle 14 rotates, it drives the central connecting shaft 15 to rotate. When the central connecting shaft 15 rotates, it drives the central valve leaf 2 to turn over. When the central valve leaf 2 rotates, it drives the connecting angle 10 on the central valve leaf 2 to rotate. When one connecting angle 10 rotates, it pulls the connecting angles 10 at other positions through the connecting rod 11, thereby driving the first side valve leaf 3, the second side valve leaf 4, and the third side valve leaf 5 to turn over simultaneously. When the multi-level valve leaves turn over simultaneously, the fluid can be evenly distributed into different valve leaves when passing through the valve body 1. The opening degree of each valve leaf can be controlled and adjusted in real time according to the flow rate size to achieve a larger range of flow rate adjustment, improve the adjustment range of the valve body 1. At the same time, by turning over the multi-level valve leaves simultaneously, flow splitting and pressure reduction can be achieved, reducing fluid impact and eddy current phenomena, improving the uniformity of fluid distribution, and meeting the flow control requirements under different working conditions;

[0030] When the central valve leaf 2, the first side valve leaf 3, the second side valve leaf 4, and the third side valve leaf 5 turn over, they drive the connecting rod 7 and the guiding ball 8 at their bottoms to turn over simultaneously, so that the guiding ball 8 is in the guiding chute 9 and moves along the trajectory of the guiding chute 9, ensuring that the guiding ball 8 always moves on the designed trajectory. Thus, the situation where each valve leaf deviates from the trajectory during the turning process is avoided. At the same time, when the guiding ball 8 moves in the guiding chute 9, the friction between each valve leaf and the valve body 1 and the jamming phenomenon of each valve leaf during turning can be reduced, enabling each valve leaf to move more stably and flexibly during the adjustment process, reducing the fluctuation and swing of the valve leaf, and thus achieving more precise flow rate adjustment, improving the overall flexibility, stability, and adjustment accuracy of the valve body 1.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0033] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A regulating valve with high regulating accuracy, comprising a valve body (1), characterized in that: A central valve leaf (2) is provided in the middle of the valve body (1); first side valve leaves (3) are symmetrically connected to the two sides of the central valve leaf (2); a second side valve leaf (4) is connected to the side of the first side valve leaf (3); a third side valve leaf (5) is connected to the side of the second side valve leaf (4); the central valve leaf (2), the first side valve leaf (3), the second side valve leaf (4), and the third side valve leaf (5) together form a multi-level valve leaf structure; The bottoms of the central valve leaf (2), the first side valve leaf (3), the second side valve leaf (4) and the third side valve leaf (5) are all provided with an arched groove (6), the interior of the arched groove (6) is fixedly connected with a connecting rod (7), two guide balls (8) are symmetrically arranged at both ends of the connecting rod (7), and a plurality of guide grooves (9) are provided on both sides of the inner wall of the valve body (1), and the guide balls (8) are located inside the guide grooves (9) and move along the trajectory of the guide grooves (9).

2. A regulating valve with high regulating accuracy according to claim 1, characterized in that: The outer walls of the central valve leaf (2), the first side valve leaf (3), the second side valve leaf (4), and the third side valve leaf (5) are all fixedly connected with connecting angles (10), and every two connecting angles (10) are movably connected via a connecting rod (11), and the top of the connecting rod (11) is connected and fixed via a supporting rod (12).

3. A regulating valve with high regulating accuracy according to claim 1, characterized in that: The outer wall of the valve body (1) is fixedly connected to a fixing frame (13), a driving handle (14) is provided on one side of the fixing frame (13), and a central connecting shaft (15) is fixedly connected to the end of the driving handle (14), and the end of the central connecting shaft (15) away from the driving handle (14) passes through the fixing frame (13) and extends to the interior of the valve body (1) and is fixedly connected to the bottom of the central valve leaf (2).

4. A regulating valve with high regulating accuracy according to claim 3, characterized in that: The outer surface of the driving handle (14) is covered with an anti-slip protective cover.

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