CN205978496U - Butterfly valve for easy regulation of fluid flow rate - Google Patents

Abstract

The utility model provides a butterfly valve convenient for adjusting the flow rate of fluid, which comprises a valve body, wherein the inner side of the valve body is provided with a sealing sleeve, a butterfly plate is arranged in the sealing sleeve, the butterfly plate, the sealing sleeve and the valve body are all provided with mounting holes, a valve rod is inserted in the mounting holes, the bottom end of the valve rod is a fixed end, and the top end of the valve rod is a power transmission end; the butterfly plate comprises a plate frame and a plate core, wherein the plate frame and the plate core are coaxially arranged, a plurality of blades with adjustable angles are arranged between the plate frame and the plate core, and the blades are uniformly distributed in a circular array mode by taking the central axis of the plate core as a central line. The utility model has the advantages that: the design is realized by adjusting the angle of the blade when the flow rate of the fluid is finely adjusted, and is realized by rotating the butterfly plate to different angles by taking the valve rod as a rotating shaft when the flow rate of the fluid is coarsely adjusted. The design structure is simple, and the flow velocity of the fluid can be accurately adjusted.

Description

Butterfly valve for easy regulation of fluid flow rate

technical field

The utility model relates to the technical field of valves, in particular to a butterfly valve which is convenient for adjusting fluid velocity.

Background technique

One of the functions of the butterfly valve is to stop the transmission of the fluid being conveyed, that is, the cut-off effect; the second function of the butterfly valve is to adjust the fluid flow rate to meet the requirements of the fluid transportation conditions. The traditional butterfly valve adjusts the flow velocity of the fluid by changing the rotation angle of the butterfly plate. However, this adjustment method is limited by the structure of the butterfly plate itself, so the accuracy of adjusting the fluid flow rate is poor. This is not conducive to the regulation of the delivery speed of the fluid. It can be seen that how to develop a butterfly valve that is convenient for adjusting the fluid flow rate and has the function of accurately adjusting the fluid flow rate in the delivery pipeline is an urgent problem to be solved by those skilled in the art.

Contents of the invention

In order to solve the above problems, the utility model provides a butterfly valve with higher accuracy and convenient for adjusting the fluid flow rate.

The utility model is a butterfly valve which is convenient for adjusting fluid flow rate, which comprises a valve body, a sealing sleeve is arranged on the inner side of the valve body, a butterfly plate is installed in the sealing sleeve, the butterfly plate, the sealing sleeve and the valve There are installation holes on the body, the valve stem is plugged into the installation hole, the bottom end of the valve stem is the fixed end, and the top end of the valve stem is the power transmission end; the butterfly plate includes a plate frame and a plate The core, the plate frame and the plate core are coaxially arranged, and a plurality of angle-adjustable blades are arranged between the plate frame and the plate core, and the central axis of the plate core is used as the center line of the blades Evenly distributed in a circular array.

Further, the rotation axis of the blade is perpendicular to the central axis of the core.

Further, the rotation angle of the blade is 0-90°.

Further, the thickness of the blade is greater than 5mm.

Further, the two end surfaces of the valve body are fixedly provided with mounting pieces for connecting with fluid delivery pipes.

Further, the mounting part is a flange.

The utility model is a butterfly valve which is convenient for adjusting the fluid velocity, and has the following advantages compared with the prior art:

First, in the butterfly valve that is convenient for adjusting the fluid flow rate, the butterfly plate is designed to be composed of a plurality of blades and the blades can rotate between the plate frame and the plate core, so that the The size of the space that the butterfly plate allows the fluid to pass through can be adjusted in a wider range. Compared with the traditional butterfly plate to control the flow rate, this design tends to control the fluid flow more finely, so this design improves the accuracy of the butterfly valve to control the fluid flow rate. In addition, the design is realized by adjusting the angle of the vane when fine-tuning the fluid flow rate, and is realized by rotating the butterfly plate to different angles with the valve stem as the rotation axis when coarsely adjusting the fluid flow rate. The design has a simple structure and is convenient for precise adjustment of fluid flow velocity.

Second, the rotation axis of the vane in the butterfly valve for adjusting the fluid velocity is perpendicular to the central axis of the plate core. The purpose of this design is to make the blades rotate along their rotation axes to significantly and effectively change the flow rate of the fluid passing through the gaps between the blades.

Thirdly, the rotation angle of the vane in the butterfly valve for adjusting the fluid flow rate is 0-90°. This design enables the vane to maximize the range of fine-tuning the fluid flow velocity when the blade fine-tunes the fluid flow velocity.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view of the utility model.

In the picture:

1. Valve stem 2. Mounting piece 3. Valve body

4. Seal sleeve 5. Butterfly plate 5.1. Blade

detailed description

In order to better understand the utility model, the utility model will be further described below in conjunction with specific embodiments and accompanying drawings.

As shown in Figure 1-2, a butterfly valve that is convenient for adjusting the fluid flow rate includes a valve body 3, a sealing sleeve 4 is arranged on the inner side of the valve body 3, a butterfly plate 5 is installed inside the sealing sleeve 4, and the butterfly valve The plate 5, the sealing sleeve 4 and the valve body 3 are all provided with installation holes, and the valve stem 1 is plugged into the installation holes. The bottom end of the valve stem 1 is a fixed end, and the valve stem 1 The top end is the power transmission end. The butterfly plate 5 includes a plate frame and a plate core, the plate frame and the plate core are coaxially arranged, and a plurality of angle-adjustable blades 5.1 are arranged between the plate frame and the plate core, and the blades 5.1 Evenly distributed in a circular array with the central axis of the core as the center line.

In the present utility model, by designing the butterfly plate 5 to be composed of a plurality of blades 5.1 and allowing the blades 5.1 to rotate between the plate frame and the plate core, the butterfly plate 5 The size of the space that allows fluid to pass can be adjusted in a wider range. Compared with the traditional butterfly plate to control the flow rate, this design tends to control the fluid flow more finely, so this design improves the accuracy of the butterfly valve to control the fluid flow rate.

The blades 5.1 are designed to be evenly distributed in a circular array mainly to make the fluid flow through the gap between each pair of adjacent blades 5.1 in the butterfly plate 5 have the same fluid flow rate. Therefore, the velocity of the fluid is more uniform when it is transported in the pipeline, and the phenomenon of vibration of the pipeline will not occur due to uneven local velocity.

In addition, this design is realized by adjusting the angle of the vane 5.1 when fine-tuning the fluid flow rate, and by rotating the butterfly plate 5 with the valve stem 1 as the rotation axis to different angles when coarsely adjusting the fluid flow rate. accomplish. The design has a simple structure and is convenient for precise adjustment of fluid flow velocity.

The rotation axis of the blade 5.1 is perpendicular to the central axis of the core. This design is mainly to make the blades 5.1 obviously and effectively change the flow rate of the fluid passing through the gaps between the blades 5.1 when the blades 5.1 rotate along their rotation axis.

The rotation angle of the blade 5.1 is 0-90°. This design enables the blade 5.1 to maximize the range of fine-tuning the fluid flow velocity when the blade 5.1 fine-tunes the fluid flow velocity. In order to increase the mechanical strength of the blade 5.1 and enable the blade 5.1 to withstand the impact of the fluid for a long time, the thickness of the blade 5.1 is designed to be greater than 5 mm.

In order to make it more convenient for the butterfly valve to be installed on the fluid delivery pipeline, mounting pieces 2 for connecting with the fluid delivery pipeline are fixedly provided on both end surfaces of the valve body 3 . In order to make the installation steps of the installation part 2 simpler and the installation effect better, the installation part 2 is designed as a flange.

In this embodiment, a spring angle adjusting member is installed between the valve stem 1 and the plate core, and the spring angle adjusting member is in the prior art. The blade 5.1 is fixedly connected to the spring angle adjusting part in the plate core, and the torque of the spring angle adjusting part is controlled by twisting the valve stem 1, so that the blade 5.1 rotates, and finally reaches The purpose of effectively controlling the distance between two adjacent blades 5.1.

The embodiments of the present utility model have been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the scope of the present utility model should still belong to the scope covered by this patent.

Claims (6)

1. be easy to the butterfly valve of regulated fluid flow velocity, including valve body (3) it is characterised in that：The inner side of described valve body (3) is provided with close Big envelope (4), is provided with butterfly plate (5), described butterfly plate (5), described sealing shroud (4) and described valve body (3) in described sealing shroud (4) On all offer installing hole, be plugged with valve rod (1) in described installing hole, the bottom of described valve rod (1) is fixing end, described valve rod (1) top is power transmission end；Described butterfly plate (5) includes sheet frame and plate core, described sheet frame and described plate core coaxial line setting, It is provided with the blade (5.1) of multiple angle adjustable, described blade (5.1) is with described plate core between described sheet frame and described plate core Central axis centered on the rounded array of line be uniformly distributed.

2. the butterfly valve being easy to regulated fluid flow velocity according to claim 1 it is characterised in that：The rotation of described blade (5.1) Rotating shaft is mutually perpendicular to the central axis of described plate core.

3. the butterfly valve being easy to regulated fluid flow velocity according to claim 2 it is characterised in that：The rotation of described blade (5.1) Gyration is 0-90 °.

4. the butterfly valve being easy to regulated fluid flow velocity according to claim 1 it is characterised in that：The thickness of described blade (5.1) Degree is more than 5mm.

5. the butterfly valve being easy to regulated fluid flow velocity according to claim 1 it is characterised in that：Two of described valve body (3) Installed part (2) for being connected with fluid-transporting tubing is fixed with end face.

6. the butterfly valve being easy to regulated fluid flow velocity according to claim 5 it is characterised in that：Described installed part (2) is method Blue.