A precision-adjustable cast valve cage

Abstract

This utility model provides a cast valve cage with adjustable precision, characterized by including a connecting part and a flow regulating part. The connecting part and the flow regulating part are integrally cast and connected. Multiple sets of flow regulating units are evenly distributed on the lower side of the flow regulating part. By integrally casting, the production method is simple and high-precision finished products can be obtained quickly, improving production efficiency. The valve cage and valve core work together to meet the flow characteristic curve and achieve equal percentage flow regulation, which can adapt to the working conditions of smaller flow rates while improving the valve regulation precision.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve assembly technology, and in particular to a cast valve cage with adjustable precision. Background Technology

[0002] In fluid systems, control valves are used to control the pressure, temperature, and flow rate of the fluid.

[0003] The valve cage is a key component of the cage-type control valve. Through its cooperation with the valve core, it changes the flow area between the valve core and the valve cage, thereby achieving precise regulation of the fluid flow rate.

[0004] As the scale of domestic equipment continues to increase, the requirements for valve control are also becoming more stringent. When the pressure difference in gas and steam conditions is relatively large, the valve vibration is severe and the outlet pressure fluctuates greatly, which in turn reduces its regulation performance. The high noise and high flow rate caused by the high pressure difference greatly reduce the actual service life of the valve.

[0005] To address this problem, this utility model provides a one-piece cast valve cage with adjustable precision. Utility Model Content

[0006] In view of the above technical problems, this utility model provides a cast valve cage that can be precisely adjusted, which improves guiding ability and high flow capacity, can be combined with different control valves, and can be widely used in standard valve internals to improve the performance of control valves.

[0007] This utility model provides a cast valve cage with adjustable precision, characterized in that it includes a connecting part and a flow regulating part, wherein the connecting part and the flow regulating part are integrally cast and connected, and multiple sets of flow regulating units are evenly distributed on the lower side of the flow regulating part.

[0008] Each flow regulation unit includes a flow regulation orifice and a flow regulation perforation. The flow regulation orifice and the flow regulation large orifice have the same shape but different sizes. The flow regulation large orifice is provided next to the flow regulation orifice.

[0009] The top wall of each of the flow regulating small holes and large holes is straight. The left and right sides of the top wall of each of the flow regulating small holes and large holes are integrally cast and connected to the upper side walls with rounded corners. The two upper side walls are arranged opposite each other. The bottom of each upper side wall is integrally cast and connected to the lower side wall. The two lower side walls are arranged opposite each other. The lower side wall is arc-shaped. The two lower side walls are connected by a bottom wall, which is arc-shaped. Each bottom wall has a connecting slot inside.

[0010] The inner sidewall of the connecting part is provided with slots on the upper and lower sides.

[0011] The beneficial effects of this utility model are as follows: This utility model is a cast valve cage with adjustable precision. It is formed by integral casting in one piece, which simplifies the production process and enables the rapid production of high-precision finished products, thereby improving production efficiency. The valve cage and valve core work together after integral casting to meet the flow characteristic curve and achieve equal percentage flow regulation, so as to adapt to the working conditions of smaller flow rates while improving the valve regulation accuracy and enhancing the valve cage's ability to withstand high pressure differentials. The valve cage provides guiding capability for the valve core, and at the same time, the valve cage has a large flow capacity, which well ensures the requirements of high pressure differentials and high precision on site. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of each flow regulation unit of this utility model;

[0014] Figure 3 This is a schematic diagram of the flow characteristic curve.

[0015] Reference numerals: 1-Connecting part; 11-Slot; 2-Flow regulating part; 21-Flow regulating small hole; 22-Flow regulating large hole; 211-Lower side wall; 212-Bottom wall; 213-Upper side wall; 214-Top wall; 215-Connecting bayonet. Detailed Implementation

[0016] Example 1

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0018] like Figure 1 As shown, this utility model provides a cast valve cage with adjustable precision, characterized in that it includes a connecting part and a flow regulating part, the connecting part and the flow regulating part are integrally cast and connected, and multiple sets of flow regulating units are evenly distributed on the lower side of the flow regulating part.

[0019] like Figure 2 As shown, each flow regulation unit includes a flow regulation small hole 21 and a flow regulation large hole 22. The flow regulation small hole 21 and the flow regulation large hole 22 have the same shape but different sizes; the flow regulation large hole 22 is provided on the side of the flow regulation small hole 21.

[0020] The top walls of each flow regulating small hole 21 and flow regulating large hole 22 are straight. The left and right sides of the top walls 214 of each flow regulating small hole 21 and flow regulating large hole 22 are integrally cast and connected to the upper side walls 213 with rounded corners. The two upper side walls 213 are arranged opposite to each other. Each upper side wall 213 is straight. The bottom of each upper side wall 213 is integrally cast and connected to the lower side wall 211. The two lower side walls 211 are arranged opposite to each other. Each lower side wall 211 is arc-shaped. The two lower side walls 211 are connected by a bottom wall 212, which is arc-shaped. Each bottom wall 212 has a connecting bayonet 215 inside.

[0021] The inner sidewall of the connecting part 1 is provided with slots 11 on the upper and lower sides.

[0022] Example 2

[0023] In use, this utility model involves assembling the valve cage with a standard valve core. The valve core is installed inside the valve cage, and as it slowly moves upwards, the fluid gradually flows upwards through the bottom of the large flow regulating orifice 22. As the valve core continues to move upwards, the fluid gradually flows through the small flow regulating orifice 21. The different shapes of the inner walls of the small flow regulating orifice 21 and the large flow regulating orifice 22 ensure that the fluid flows in a controlled manner. Figure 3 The equal percentage flow rate adjustment, compared to linear and quick-opening adjustments, has the advantages of high adjustment accuracy and support for adjustment under small flow conditions.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cast valve cage with adjustable precision, characterized in that... It includes a connecting part and a flow regulating part. The connecting part and the flow regulating part are integrally cast and connected. Multiple sets of flow regulating units are evenly distributed on the lower side of the flow regulating part.

2. A precision adjustable casting valve cage according to claim 1, wherein Each flow regulation unit includes a flow regulation orifice and a flow regulation orifice. The flow regulation orifice and the flow regulation orifice have the same shape but different sizes. The flow regulation orifice is provided next to the flow regulation orifice.

3. A precision adjustable casting valve cage according to claim 1, wherein The top wall of each of the flow regulating small holes and large holes is straight. The left and right sides of the top wall of each of the flow regulating small holes and large holes are integrally cast and connected to the upper side walls with rounded corners. The two upper side walls are arranged opposite each other. The bottom of each upper side wall is integrally cast and connected to the lower side wall. The two lower side walls are arranged opposite each other. The lower side wall is arc-shaped. The two lower side walls are connected by a bottom wall, which is arc-shaped. Each bottom wall has a connecting slot inside.

4. A precision adjustable casting valve cage according to claim 1 wherein The inner sidewall of the connecting part is provided with slots on the upper and lower sides.

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