CN204213368U - A kind of based on the multi-functional butterfly plate of electric planer formula axle construction improvement and the butterfly valve of formation thereof - Google Patents

Abstract

The utility model discloses a kind of based on the multi-functional butterfly plate of electric planer formula axle construction improvement and the butterfly valve of formation thereof.Butterfly plate both sides are equipped with arch hemisphere jut, the arch hemisphere jut of the butterfly plate of fluid input side is provided with the three road flow manifolds for shunting decompression, the arch hemisphere jut of the butterfly plate of fluid output side is provided with the four road flow manifolds for shunting decompression, and the arch hemisphere jut of the butterfly plate of fluid output side is provided with the installation orifice of installing for butterfly plate radial direction.The improvement that the utility model carries out based on standard flange formula soft sealing butterfly valve tradition butterfly plate structure, can be decreased through the high flow rate of fluid during butterfly plate, the flow manifold on it plays shunting decompression, prevents cavitation erosion, the effect of vibrationproof noise reduction; In addition, when butterfly valve cuts out, the sealability of valve body can just be strengthened.

Description

A multifunctional butterfly plate based on an improved electric planer shaft structure and the butterfly valve it constitutes

technical field

The utility model relates to a multifunctional butterfly plate and a butterfly valve formed thereof, in particular to an improved multifunctional butterfly plate based on an electric planer shaft structure and a butterfly valve formed thereof.

Background technique

Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium, and can also be used to control air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive The flow of various types of fluids such as media. It mainly plays the role of cutting and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment.

With the acceleration of my country's urbanization process, the amount of valves used in tap water, gas, natural gas, petrochemical and other pipelines is also rising sharply. In addition, the export volume of butterfly valves is also increasing year by year. In addition to the increase in quantity, the technical content of butterfly valves has also increased significantly. The butterfly valve has the advantages of simple structure, low height, light weight, rapid opening and closing, and can be made into a large diameter. It can also be used to adjust the flow when necessary, which is unmatched by other valves. Therefore, the development of butterfly valve products suitable for high-parameter working conditions and capable of long-term operation has become a common concern of valve manufacturing and user departments. The design of large-diameter butterfly valves not only needs to solve the material problem of the materials used, but also needs to accurately understand the hydraulic characteristics of the valve, so as to provide a basis for the improved design of the valve structure.

The components used in this special environment must have corresponding anti-destructive capabilities to avoid corrosion of the fluid on the sealing surface and instantaneous impact damage. In practical application, the sealing part of the valve will be easily damaged due to the impact of liquid flow when the valve is opened or closed. Therefore, it is very important to design a multifunctional butterfly valve that can adapt to work in a bad environment. Thereby reducing the vibration, noise and cavitation of the valve, reducing the damage of parts, enhancing the sealing performance and prolonging the normal operation life of the valve.

Therefore, it is very important to study the internal flow mechanism of the butterfly valve body and the reasonable structure of the butterfly plate to reduce the local energy loss of the fluid in the flow channel of the butterfly valve and the erosion damage to the sealing part of the valve plate, and to improve the efficiency and service life of the butterfly valve. .

Contents of the invention

In order to overcome the shortcomings of the butterfly valve in the background technology, the purpose of this utility model is to provide a multifunctional butterfly plate based on the electric planer shaft structure improvement and the butterfly valve formed by it, which can adapt to working conditions in adverse environments and improve the service life and stability of the valve. Sexuality.

The technical scheme that the utility model adopts is:

1. A multifunctional butterfly plate based on the improved planer shaft structure:

Both sides of the butterfly plate are provided with arched spherical protrusions. The arched spherical protrusions of the butterfly plate on the fluid inlet side are provided with three diversion channels for diversion and pressure reduction. The arched spherical protrusions of the butterfly plate on the fluid outlet side There are four shunt passages for splitting and decompression, and the arched spherical protrusion of the butterfly plate on the fluid outlet side is provided with mounting holes for radial installation of the butterfly plate.

The arched spherical protrusion of the butterfly plate on the side of the fluid outlet is provided with four grooves uniformly distributed along the circumference from the center of the butterfly plate. The shapes of each groove are the same, and the four grooves are connected at the center of the butterfly plate. Through the four grooves, the arched spherical protrusion of the butterfly plate is divided into four partition blocks, and the mounting holes for the radial installation of the butterfly plate are connected to two symmetrical partition blocks among the four partition blocks.

The spherical protrusion of the butterfly plate on the side of the fluid inlet is provided with three grooves uniformly distributed along the circumference from the center of the butterfly plate. The shapes of each groove are the same, and the three grooves are connected at the center of the butterfly plate. Through the three grooves, the spherical protrusion of the disc arch is divided into three division blocks.

Synapses for shunting and buffering are provided between the walls on both sides of each division block.

The sidewalls on both sides of each groove are planes, the width of each groove gradually decreases from the center of the disc to the outside, and the angle between the sidewalls on both sides of each groove is 16-20 °.

The middle thickness of the butterfly plate is at least 0.0875 times the diameter D of the butterfly plate.

The thickness h of the arched spherical protrusions on both sides of the butterfly plate is at most 0.12 times the diameter D of the butterfly plate.

The length of the arc segment (11) on the edge of the butterfly plate where the openings of the four grooves are located is at most 11/48 of the diameter D of the butterfly plate.

2. A multifunctional butterfly valve based on the improved planer shaft structure:

It includes a butterfly plate opening and closing operating mechanism, an upper valve stem, a lower valve stem and a valve body, and the butterfly plate in the butterfly valve adopts the butterfly plate.

The beneficial effect that the utility model has is:

In the process of opening and closing the butterfly valve, the arched spherical protrusions distributed on both sides of the butterfly plate can reduce the high flow rate of the fluid passing through the butterfly plate, and the evenly distributed flow channels on the arched spherical protrusions can divide and reduce pressure, which can Effectively reduce the pressure difference between the front and back of the valve, so as not to increase the resistance when the fluid passes through, prevent cavitation, prevent vibration and reduce noise. In addition, because the number of evenly distributed flow channels on both sides of the arched spherical protrusion is different, that is, the number of flow channels on the side where the fluid enters is less than that on the side where the fluid goes out. When the butterfly valve is closed, the sealing performance of the O-ring can be enhanced. .

The utility model can meet the needs of fields such as petroleum, chemical industry and water conservancy.

Description of drawings

Fig. 1 is a schematic structural view of the fluid outlet side of the butterfly plate of the present invention.

Fig. 2 is a schematic structural view of the fluid inlet side of the butterfly plate of the present invention.

Fig. 3 is a front view of the fluid outlet side of the butterfly plate of the present invention.

Fig. 4 is a left side view of Fig. 3 .

FIG. 5 is a top view of FIG. 3 .

Fig. 6 is a structural schematic diagram of the butterfly valve of the present invention.

Fig. 7 is a left side view of Fig. 6 .

In the figure: 1. Valve plate opening and closing control mechanism, 2. Double-headed stud, 3. O-shaped rubber sealing ring, 4. Upper valve stem, 5. Flat key, 6. Butterfly plate, 7. Internal thread cylindrical pin, 8. Lower valve stem, 9. Valve body, 10. Split flow channel, 11. Arc section, 12. Mounting hole, D, diameter of butterfly plate, h, thickness of arched spherical protrusion.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1 and Figure 2, the butterfly plate of the present utility model includes: both sides of the butterfly plate 6 are provided with arched spherical protrusions, and the arched spherical protrusions of the butterfly plate 6 on the fluid inlet side are provided with for shunting and decompression There are three shunt passages 10 on the butterfly plate 6 on the fluid outlet side, and four shunt flow passages 10 for shunting and decompression are provided on the arched spherical protrusion of the butterfly plate 6 on the fluid outlet side. There are mounting holes for radial mounting of butterfly plates.

As shown in Figure 1, there are four grooves evenly distributed along the circumference on the arched spherical protrusion of the butterfly plate 6 on the side of the fluid outlet from the center of the butterfly plate 6. The shapes of each groove are the same, and the four grooves are in the The center of the butterfly plate 6 is connected to form four shunt channels 10, and the four grooves divide the arched spherical protrusion of the butterfly plate 6 into four division blocks, and the mounting holes for the radial installation of the butterfly plate are connected to the four Split blocks on which two symmetrical split blocks.

As shown in Figure 2, the arched spherical protrusion of the butterfly plate 6 on the side of the fluid inlet has three grooves uniformly distributed along the circumference from the center of the butterfly plate 6 outwards. The shapes of each groove are the same, and the three grooves are in the The center of the butterfly plate 6 is connected to form three split flow channels 10, and the three grooves divide the arched spherical protrusion of the butterfly plate 6 into three division blocks.

Synapses for shunting and buffering are provided between the walls on both sides of each division block.

The sidewalls on both sides of each groove 6 are flat, the width of each groove gradually decreases from the center of the disc to the outside, and the angle between the sidewalls on both sides of each groove is 16-20°. The lengths of the side walls on both sides of each groove 6 are equal to 1/3 of the diameter D of the disc.

The middle thickness of the butterfly plate 6 is at least 0.0875 times the diameter D of the butterfly plate.

The thickness h of the arched spherical protrusions on both sides of the butterfly plate 6 is at most 0.12 times the diameter D of the butterfly plate, as shown in FIG. 4 .

The length of the arc segment 11 on the edge of the butterfly plate 6 where the openings of the four grooves are located is at most 11/48 of the diameter D of the butterfly plate.

The embodiment of butterfly plate of the present utility model is shown in Fig. 3 to Fig. 5:

On the butterfly plate 6 on the side of the fluid outlet, the angle between the side walls on both sides of each groove is 18°. As shown in Figure 3, the lengths of the side walls on both sides of each groove 6 are equal to each other. 1/3 of the plate diameter D. The thickness in the middle of the butterfly plate 6 is 0.0875 times the diameter D of the butterfly plate, the thickness h of the arched spherical protrusions on both sides of the butterfly plate 6 is 0.12 times the diameter D of the butterfly plate, and the circle of the edge of the butterfly plate 6 where the four grooves are located The length of the arc section 11 is 11/48 of the disc diameter D.

The shunt channel of the arched spherical protrusions on both sides of the butterfly plate of the utility model is formed on the basis of the approximately right-angled trapezoidal structure, and is formed by cutting the center of the arched spherical protrusions and rounding the corners through the automatic tangent constraint command of the three-dimensional drawing software. of.

The shunt flow channels on the arched spherical protrusions on both sides of the butterfly plate are evenly distributed, starting on the axis perpendicular to the installation axis of the butterfly plate on the side of the fluid inlet, with an angle of 120° as the interval, uniformly distributed, a total of three; The fluid outlet side is evenly distributed on the center line of 45° left and right of the butterfly plate installation axis, and there are four in total.

As shown in Figures 6 and 7, the multifunctional butterfly valve of the present invention includes a butterfly plate opening and closing control mechanism 1, an upper valve stem 4, a lower valve stem 8 and a valve body 9, and the butterfly plate inside adopts the butterfly plate 6. The upper end of the valve body 9 of the butterfly valve is the butterfly plate opening and closing operating mechanism 1, the butterfly plate opening and closing operating mechanism 1 is fixed by the stud 2, and the upper valve stem 4 on the upper part of the valve body 9 is axially connected to the installation hole through the flat key 5 The upper valve stem 4 is sealed and installed through the O-shaped rubber sealing ring 3, and the lower valve stem 8 at the bottom of the valve body 9 is axially connected to the hole of the mounting hole through the internal threaded cylindrical pin 7 to form an integral multifunctional butterfly valve. structure.

Figure 1 and Figure 2 are three-dimensional diagrams of the butterfly plate of the multifunctional butterfly valve. The diameter of the butterfly plate is 2400mm of the standard flange type soft seal butterfly valve. Because the design of the butterfly plate can be completely carried out on the three-dimensional drawing software, and there is no particularly complicated and difficult-to-process structure, the utility model can completely utilize the current advanced 3D printing technology for production and processing.

Working principle and working process of the present utility model are as follows:

1) In the cylindrical channel of the butterfly valve body, the butterfly plate opening and closing operating mechanism and the multifunctional butterfly plate connected between the upper and lower valve stems rotate around the axis, the rotation angle is between 0°~90°, and the rotation angle is 90° °, the valve is fully open. During the opening process of the butterfly valve, the butterfly plate will gradually break away from the valve seat. Since there is no vertical force between the butterfly plate and the valve seat, the friction heat between the sealing pairs is greatly reduced, the wear and tear are reduced. operating torque, thus reducing the energy required to open and close the valve plate.

2) When the fluid flows in from the inlet side of the butterfly valve, the multi-functional butterfly plate is opened by turning the upper and lower valve stems through the butterfly plate opening and closing operating mechanism, and the fluid will pass through the arched spherical protrusions on both sides of the butterfly plate and the shunt on the arched spherical protrusions The flow channel, the spherical protrusion can reduce the high velocity of the fluid jet, and the flow diversion channels on both sides of the spherical protrusion can divide the flow and reduce pressure.

The butterfly valve can be self-sealing through the partition blocks on both sides of the diversion channel. Since the number of diversion channels on both sides is different, the gravity of the final segmented block is different. When the opening and closing mechanism of the butterfly valve fails, under the action of gravity It will be automatically compressed to achieve a self-sealing effect.

3) With the rotation of the upper and lower valve stems of the butterfly valve, the rotation angle of the butterfly plate increases, and the utilization rate of the shunt flow channels on the arched spherical protrusions on both sides of the butterfly plate will also increase. When the butterfly plate is fully opened at 90°, it will reach A stable split flow decompression reduces the flow velocity of the fluid through the butterfly plate.

4) When the butterfly plate is closed, due to the difference in the number of flow passages on the arched spherical protrusions on both sides of the butterfly plate, pressing the valve seat will increase the sealing performance of the valve, and the sealing performance can still be maintained when the external force fails .

The electric planer shaft structure of the utility model improves the butterfly valve butterfly plate. When the fluid medium flows through the butterfly valve through the flow channel on one side of the valve plate, the arched spherical protrusions on both sides of the butterfly plate and the number of arched spherical protrusions on both sides of the butterfly plate are different. The diversion channel will play the role of deceleration and diversion decompression, and this deceleration and diversion decompression effect will exist in the whole working process of the butterfly valve. It basically slows down and eliminates the high-speed impact wear on the butterfly valve disc and pipe when the fluid flows through the butterfly valve. When the butterfly valve is completely closed, the sealing performance of the butterfly valve will be effectively enhanced. Therefore, the butterfly plate with the arched spherical protrusion and the flow diversion channel further increases the service life of the butterfly valve, improves its overall performance, and ensures the long-term continuous use of the butterfly valve.

Claims (9)

1. the multi-functional butterfly plate improved based on electric planer formula axle construction, it is characterized in that: butterfly plate (6) both sides are equipped with arch hemisphere jut, the arch hemisphere jut of the butterfly plate (6) of fluid input side is provided with the three road flow manifolds for shunting decompression, the arch hemisphere jut of the butterfly plate (6) of fluid output side is provided with the four road flow manifolds for shunting decompression, and the arch hemisphere jut of the butterfly plate (6) of fluid output side is provided with the installation orifice of installing for butterfly plate radial direction.

2. a kind of multi-functional butterfly plate improved based on electric planer formula axle construction according to claim 1, it is characterized in that: butterfly plate (6) the arch hemisphere jut of described fluid output side outwards has four grooves be uniformly distributed along the circumference from butterfly plate (6) center, the shape of each groove is identical, four grooves are connected in butterfly plate (6) center, butterfly plate (6) arch hemisphere jut is divided into the block of four by four grooves, and the installation orifice of installing for butterfly plate radial direction is connected to four blocks wherein two symmetrical blocks.

3. a kind of multi-functional butterfly plate improved based on electric planer formula axle construction according to claim 1, it is characterized in that: butterfly plate (6) the arch hemisphere jut of described fluid input side outwards has three grooves be uniformly distributed along the circumference from butterfly plate (6) center, the shape of each groove is identical, three grooves are connected in butterfly plate (6) center, and butterfly plate (6) is encircleed the block that hemisphere jut is divided into three by three grooves.

4., according to the arbitrary described a kind of multi-functional butterfly plate improved based on electric planer formula axle construction of claim 2 ~ 3, it is characterized in that: between the wall of described each block both sides, be provided with the cynapse for streaming buffer.

5. according to the arbitrary described a kind of multi-functional butterfly plate improved based on electric planer formula axle construction of claim 2 ~ 3, it is characterized in that: the sidewall of described each groove (6) both sides is plane, the width of each groove is outwards reduced gradually by butterfly plate center, and the angle between the both sides sidewall of each groove is 16 ~ 20 °.

6., according to the arbitrary described a kind of multi-functional butterfly plate improved based on electric planer formula axle construction of claims 1 to 3, it is characterized in that: described butterfly plate (6) interior thickness is at least the butterfly plate diameter of 0.0875 times.

7., according to the arbitrary described a kind of multi-functional butterfly plate improved based on electric planer formula axle construction of claims 1 to 3, it is characterized in that: the thickness h of the arch hemisphere jut of described butterfly plate (6) both sides is at most the butterfly plate diameter of 0.12 times.

8. a kind of multi-functional butterfly plate improved based on electric planer formula axle construction according to claim 2, is characterized in that: four described groove port places the length of arc section (11) at butterfly plate (6) edge be at most 11/48 butterfly plate diameter.

9. the multi-functional butterfly valve improved based on electric planer formula axle construction, comprise butterfly plate and open and close operating mechanism (1), upper valve rod (4), lower valve rod (8) and valve body (9), it is characterized in that: the butterfly plate in butterfly valve adopts claims 1 to 3 or 8 arbitrary described butterfly plates (6).