Orifice plate flow regulating valve

Abstract

The utility model discloses a hole plate type flow regulating valve, including the tubular valve body, the left side of valve body is the water inlet side, and the right side is the water outlet side, and the top of valve body has the valve plate mounting hole, and the valve rod is equipped in valve plate mounting hole through the sealing washer, and the fixed valve plate and the movable valve plate that cooperate are set up in the valve body, and the fixed valve plate is fixed in the valve body near the water inlet side, and the movable valve plate is located the just below of valve plate mounting hole, and the top of movable valve plate is fixed in the bottom of valve rod, and the movable valve plate and fixed valve plate are set up respectively with a plurality of corresponding flow -through holes, and its characterized in that: still include the water outlet side fixed valve plate that cooperate with movable valve plate of fixed in movable valve plate right side valve body, and the water outlet side fixed valve plate is set up with the corresponding drain hole of movable valve plate top flow -through hole. The utility model discloses the sealing effect is good, and the medium is not easy to produce vortex and turbulence phenomenon after flowing through the utility model.

Description

Technical Field

[0001] This utility model relates to a regulating valve, specifically an orifice plate type flow regulating valve. Background Technology

[0002] A prior art orifice plate regulating valve (patent application number 202020270389.2) is disclosed. The valve's structure mainly includes a tubular valve body. A fixed valve plate is fixed to the inlet side of the valve body, and a movable valve plate, which cooperates with the fixed valve plate, is mounted on the outlet side via a valve stem extending from a mounting hole at the top of the valve body. Both the movable and fixed valve plates have multiple corresponding flow holes. Both the fixed and movable valve plates can be inserted into the valve body through the mounting hole at the top of the valve body. When the valve stem moves up and down, the movable valve plate can slide up and down relative to the fixed valve plate, thereby achieving linear flow regulation.

[0003] The main problems with the orifice plate control valve in the above-mentioned prior art are: the seal between the fixed valve plate and the movable valve plate in the valve is not ideal, and leakage sometimes occurs when the valve is fully closed; when the valve is fully open, the medium flowing through the flow hole of the movable valve plate sometimes generates eddy currents and causes cavitation, and sometimes generates turbulence and washes out the pipeline. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an orifice plate type flow regulating valve. This utility model has a good sealing effect, and the medium flowing through this utility model is not prone to eddy currents and turbulence.

[0005] To solve the above-mentioned technical problems, this utility model provides an orifice plate type flow regulating valve, including a tubular valve body, with the left side of the valve body being the inlet side and the right side being the outlet side. The top of the valve body has a valve plate mounting hole, and a valve stem is installed in the valve plate mounting hole through a sealing ring. The valve body is provided with a fixed valve plate and a movable valve plate that cooperate with each other. The fixed valve plate is fixed in the valve body near the inlet side, and the movable valve plate is located directly below the valve plate mounting hole. The top of the movable valve plate is fixed to the bottom end of the valve stem. The movable valve plate and the fixed valve plate are respectively provided with a plurality of corresponding flow holes. The feature is that it also includes an outlet side fixed valve plate that cooperates with the movable valve plate and is fixed in the valve body on the right side of the movable valve plate. The outlet side fixed valve plate is provided with a drain hole that corresponds to the flow holes on the movable valve plate.

[0006] As an improvement to this utility model, the movable valve plate is made of non-metallic material.

[0007] Preferably, the movable valve plate is made of PET-P or FP-4 material.

[0008] The present invention has the following beneficial technical effects: First, the regulating valve of the present invention has a better sealing effect than the two valve plates in the prior art, and is less prone to leakage; Second, when the medium flows through the present invention, the path through the hole is longer, and the medium is less prone to eddy currents and turbulence after flowing out; Third, the movable valve plate in the present invention is a non-metallic movable valve plate, which is not easy to rust and has a longer service life. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings.

[0010] Figure 1 This is a schematic diagram of the main cross-sectional structure of the orifice plate flow regulating valve of this utility model. The regulating valve in the figure is in the fully open state.

[0011] Figure 2 This is a schematic diagram of the main cross-sectional structure of the orifice plate flow regulating valve of this utility model. The regulating valve in the figure is in the fully closed state.

[0012] Figure 3 This is a schematic diagram showing the state of the orifice plate flow regulating valve of this utility model when the medium flows through the valve in the open state.

[0013] Figure 4 This is a schematic diagram showing the state of a medium flowing through a fully open orifice plate control valve, which has two valve plates: a fixed valve plate and a movable valve plate, in the existing technology.

[0014] Figure 5 This is a schematic diagram showing the state when the medium flows through the present invention and the present invention is in a fully open state.

[0015] Figure 6 This is a schematic diagram of the sealing relationship when the medium flows through an orifice plate control valve with two valve plates (fixed and movable) in the existing technology and is fully closed.

[0016] Figure 7 This is a schematic diagram of the sealing relationship when the medium flows through this utility model and the utility model is in a fully closed state. Detailed Implementation

[0017] See Figure 1 - Figure 2This utility model discloses an orifice plate type flow regulating valve, comprising a tubular valve body 1, with an inlet side 2 on the left and an outlet side 3 on the right. The top of the valve body has a valve plate mounting hole 4, through which a valve stem 6 is installed via a sealing ring 5. The valve body contains a fixed valve plate 7 and a movable valve plate 8, which cooperate with each other. The fixed valve plate is fixed to the valve body adjacent to the inlet side, and the movable valve plate is located directly below the valve plate mounting hole. The top of the movable valve plate is fixed to the bottom end of the valve stem. Multiple corresponding flow holes 9 are respectively opened on the movable and fixed valve plates. The valve body is characterized by further including an outlet side fixed valve plate 10, fixed to the valve body on the right side of the movable valve plate 8, which cooperates with the movable valve plate. The outlet side fixed valve plate has a drain hole 11 corresponding to the flow holes 9 on the movable valve plate. The movable valve plate 8 is a non-metallic movable valve plate, preferably made of PET-P or FP-4 material.

[0018] The assembly process and working principle of this utility model are as follows: First, the fixed valve plate 7 and the outlet-side fixed valve plate 10 are respectively inserted into the valve body 1 through the valve plate mounting hole 4 and fixed on the left and right sides respectively. Then, the top of the movable valve plate 8 is fixed to the bottom end of the valve stem 6, and then the movable valve plate 8 is placed into the valve body. At this time, the fixed valve plate 7 and the outlet-side fixed valve plate 10 are located on both sides of the movable valve plate. When this utility model is opened, the valve stem is driven to move upward, and the movable valve plate 8 slides upward accordingly. The flow hole on the movable valve plate gradually connects with the flow hole on the left fixed valve plate and the drain hole on the right outlet-side fixed valve plate. In the fully open state of this utility model, the axis of the flow hole on the movable valve plate, the corresponding flow hole on the left fixed valve plate, and the corresponding drain hole on the right outlet-side fixed valve plate are completely aligned on the same straight line. In the reverse operation, the valve stem is driven to move downward, and the flow hole on the movable valve plate gradually shifts away from the corresponding flow hole on the left fixed valve plate and the corresponding drain hole on the right outlet-side fixed valve plate, thus completing the closing of this utility model.

[0019] See also Figure 3 , Figure 3 This is a schematic diagram of the state of the orifice plate flow regulating valve of this utility model when the medium flows through the valve in the open state, and the medium flows through the valve to form a stable advection state.

[0020] See also Figure 4 , Figure 5 , Figure 4 This is a schematic diagram of the state when the medium flows through the orifice plate control valve with two valve plates (fixed valve plate and movable valve plate) in the existing technology when it is fully open. When the medium flows through the orifice plate control valve with two valve plates, the path S1 through the orifice is relatively short. After the medium flows out, it is easy to disperse and form a spray gun effect. The collision of the medium can easily form eddies and turbulence. Figure 5This is a schematic diagram of the state when the medium flows through the present invention and the present invention is fully open. When the medium flows through the present invention, the path S2 through the hole is relatively long, and the medium is less likely to generate eddies or turbulence after flowing out.

[0021] See also Figure 6 , Figure 7 , Figure 6 This is a schematic diagram of the sealing relationship when the medium flows through an orifice plate control valve with two valve plates (fixed and movable) in the existing technology and is fully closed. As can be seen from the figure, when the orifice plate control valve with two valve plates is fully closed, it forms a single seal relationship between the valve plates, which is not ideal and sometimes leakage occurs. Figure 7 This is a schematic diagram of the sealing relationship when the medium flows through the present invention and the present invention is fully closed. As can be seen from the figure, the orifice plate regulating valve of the present invention forms a double sealing relationship when the medium flows through the three valve plates, and the sealing effect is relatively ideal, and leakage is not easy to occur.

[0022] It is understood that the above specific description of the present utility model is only used to illustrate the present utility model and is not limited to the technical solutions described in the embodiments of the present utility model. Any modifications or equivalent substitutions to the present utility model to achieve the same technical effect are within the protection scope of the present utility model.

Claims

1. An orifice plate type flow regulating valve, comprising a tubular valve body (1), with the left side of the valve body being the inlet side (2) and the right side being the outlet side (3), the top of the valve body having a valve plate mounting hole (4), a valve stem (6) being installed in the valve plate mounting hole through a sealing ring (5), a fixed valve plate (7) and a movable valve plate (8) being provided in the valve body, the fixed valve plate being fixed in the valve body near the inlet side, the movable valve plate being located directly below the valve plate mounting hole, the top of the movable valve plate being fixed to the bottom end of the valve stem, and multiple corresponding flow holes (9) being opened on the movable valve plate and the fixed valve plate respectively, characterized in that: It also includes a water outlet fixed valve plate (10) fixed in the valve body on the right side of the movable valve plate (8) and cooperating with the movable valve plate. The water outlet fixed valve plate is provided with a drain hole (11) corresponding to the flow hole (9) on the movable valve plate.

2. The orifice plate flow regulating valve as described in claim 1, characterized in that: The movable valve plate (8) is made of non-metallic material.

3. The orifice plate flow regulating valve as described in claim 2, characterized in that: The movable valve plate (8) is made of PET-P or FP-4 material.

Images