Filtering steel lined butterfly valve

Abstract

The utility model relates to filter valve production technical field, concretely is filter type steel lining butterfly valve, filter type steel lining butterfly valve is installed on medium conveying pipeline, and the pipeline in along medium flow direction is sequentially provided with medium import, flush interface, filter type steel lining butterfly valve, blowdown and medium export, and this butterfly valve includes valve body, valve rod and valve plate, the valve rod penetrates valve body and is connected with valve body rotation, the valve plate is fixedly connected with valve rod and is located in valve body, even if a plurality of filter holes are set up on valve plate, filter hole penetrates valve plate both sides end face, and the valve plate rotates in valve body through valve rod drive.

Description

Technical Field

[0001] This utility model relates to the field of filter valve manufacturing technology, specifically a filter-type steel-lined butterfly valve. Background Technology

[0002] In systems that transport solid media, a filter device needs to be installed to isolate the solid media. After a long period of operation, the filter device needs to be manually disassembled for cleaning, which is time-consuming and labor-intensive. Frequent disassembly can easily damage the equipment and affect production efficiency. In particular, when filtering some highly toxic or extremely toxic substances, manual disassembly and cleaning of the filter plates is dangerous.

[0003] In the existing technology, some companies have modified the valve plate of butterfly valves by opening holes to make it act as a filter device, so as to separate the liquid medium in the product from other solid objects. For example, patent CN204042023U, a multi-purpose filter separation butterfly valve, discloses that the valve plate has a valve plate filter through hole on the side of the valve plate near the inlet channel. The valve plate filter through hole is a conical hole, and the inner diameter of the valve plate filter through hole gradually decreases from the inlet channel to the valve shaft. This device must be used with a valve plate filter screen to achieve filtration. When solid matter blockage occurs in the conveying system, the conical hole needs to be cleaned, but the filter screen must be disassembled or replaced first, and the cleaning process is cumbersome.

[0004] In view of the above-mentioned shortcomings of the existing technology, there is an urgent need for a butterfly valve that is easy to clean. Utility Model Content

[0005] The purpose of this utility model is to address the problems in the prior art by providing a filter-type steel-lined butterfly valve, which enables convenient cleaning of the filter material on the valve plate.

[0006] To solve the above problems, the technical solution adopted by this utility model is a filter-type steel-lined butterfly valve. The filter-type steel-lined butterfly valve is installed on a media conveying pipeline. Along the media flow direction, the pipeline is sequentially provided with a media inlet, a flushing interface, the filter-type steel-lined butterfly valve, a drain outlet, and a media outlet. The filter-type steel-lined butterfly valve includes a valve body, a valve stem, and a valve plate. The valve stem passes through the valve body and is rotatably connected to it. The valve plate is fixedly connected to the valve stem and located within the valve body. The valve plate has a plurality of evenly spaced filter holes that penetrate both end faces of the valve plate. The valve plate is driven by the valve stem to rotate within the valve body, with a rotation angle of 0°-180°.

[0007] Furthermore, the filter hole is a circular through hole.

[0008] Furthermore, the diameter of the circular through hole is 2-5 mm, and the spacing between adjacent filter holes is 1-2 times the diameter of the hole.

[0009] Furthermore, a handwheel is provided at one end of the valve stem, and the handwheel is detachably connected to the valve stem.

[0010] Furthermore, the valve plate is circular, and its edge is provided with an elastic sealing ring.

[0011] Compared with existing technologies, the beneficial effects of this solution are: 1. Convenient flushing: With integrated flushing interface and drain outlet, when the filter holes of the valve plate are clogged, simply rotate the valve plate parallel to the pipeline and introduce clean liquid through the flushing interface to flush the valve plate. Solid particles attached to the gate plate can be quickly removed by the clean liquid flushing, and waste liquid is discharged from the drain outlet. Cleaning can be completed without disassembly, reducing cleaning difficulty and eliminating the safety risks of disassembly when working with highly toxic or extremely toxic media, ensuring the safety of operators; it eliminates the need for regular manual disassembly, installation, and cleaning, significantly reducing labor costs and avoiding equipment damage caused by frequent disassembly, thus extending the service life of the valve.

[0012] 2. Filter holes with a diameter of 2-5mm are suitable for most solid media particle sizes. Most harmful solid particles that need to be intercepted in industrial solid media are larger than 5mm. A 2mm hole diameter can accurately intercept them and avoid pipeline blockage. When the hole diameter is smaller than 2mm, the medium flow resistance will increase sharply, leading to an increase in pump energy consumption. If the hole diameter is larger than 5mm, it will not be able to effectively intercept key particles and lose the purpose of filtration.

[0013] 3. A filter orifice spacing of 1-2 times the orifice diameter ensures the structural strength of the valve plate. A spacing less than 1 times the orifice diameter results in insufficient support strength in the orifice area, making it prone to deformation under long-term media pressure. A spacing greater than 2 times the orifice diameter reduces the filtration area and lowers interception efficiency. This spacing creates a uniform flow channel, preventing solid particles from accumulating and bridging in the gaps between the orifices, while also providing sufficient space for the flow of clear liquid during flushing. Matching the spacing to the orifice diameter ratio ensures more uniform media flow, avoids excessively high local flow velocities leading to valve plate wear, and extends service life.

[0014] 4. It has a high degree of structural integration, directly replacing the traditional butterfly valve + filter combination structure, simplifying pipeline layout and reducing equipment investment costs. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the filter-type steel-lined butterfly valve of this utility model.

[0016] In the diagram: 1-valve body; 2-valve stem; 3-valve plate; 4-filter hole; 5-handwheel; 6-elastic sealing ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1 is attached. Figure 1 As shown: This embodiment is a filter-type steel-lined butterfly valve, which is installed on a media conveying pipeline. Along the media flow direction, the pipeline is sequentially equipped with a media inlet, a flushing interface, a filter-type steel-lined butterfly valve, a drain port, and a media outlet. Valves are installed at the media inlet / outlet, flushing interface, and drain port. The butterfly valve includes a valve body 1, a valve stem 2, and a valve plate 3.

[0019] The valve body 1, valve stem 2, and valve plate 3 are made of stainless steel. The valve stem 2 passes through the valve body 1 and is rotatably connected to it. A packing seal is provided at the connection between the valve stem 2 and the valve body 1 to prevent media leakage. The valve plate 3 is fixedly connected to the valve stem 2 and located inside the valve body 1. Driven by the valve stem 2, the valve plate 3 rotates 0-180° within the valve body 1 around the axis of the valve stem 2, thereby achieving filtration and cleaning. A plurality of filter holes 4 are evenly distributed on the valve plate 2, penetrating both end faces of the valve plate 3. The valve plate 2 has a circular plate structure with elastic sealing rings 6 at its edges. Preferably, the filter holes 4 are circular through holes with a diameter of 2-5 mm, and the spacing between adjacent filter holes is 1-2 times the hole diameter. A handwheel 5 is provided at one end of the valve stem 2. The handwheel 5 is detachably connected to the valve stem 2 and is made of cast iron with anti-slip textures on the surface for easy operation. When handwheel 5 is operated, valve stem 2 transmits rotational torque to valve plate 3, causing it to rotate around the axis of valve stem 2. When valve plate 3 is parallel to the pipeline direction, the valve is fully open, allowing for cleaning of valve plate 3. When valve plate 3 is perpendicular to the pipeline direction, filtration is performed. The control of valve plate 3's rotation angle via handwheel 5 and valve stem 2, as well as the drive connection between these three components, are common technologies in existing butterfly valves and will not be described in detail here.

[0020] Working principle: During normal operation, adjust valve plate 3 to be perpendicular to the pipeline, and the medium passes through the filter holes 4 on valve plate 3 to intercept solid particles. When a decrease in pipeline flow and blockage are detected, close the medium inlet and outlet, open the flushing port and drain port, turn handwheel 5 to rotate valve plate 3 to be parallel to the channel, and introduce clean liquid through the flushing port to flush the solid particles attached to the valve plate surface. The waste liquid after flushing is discharged through the drain port. After cleaning, close the flushing port and drain port, open the medium inlet and outlet, and rotate valve plate 3 to be perpendicular to the pipeline to resume production.

[0021] Example 2: Unlike Example 1, filter hole 4 is a square hole, which is effective in trapping irregular impurities (such as fibers) and is suitable for filtering sewage and waste liquid.

[0022] Example 3: Unlike Example 1, filter hole 4 is a strip-shaped hole, which is suitable for fluids with low fluid resistance and high viscosity (such as syrup and crude oil) and reduces clogging.

[0023] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A filter-type steel-lined butterfly valve, wherein the filter-type steel-lined butterfly valve is installed on a media conveying pipeline, comprising a valve body, a valve stem, and a valve plate, wherein the valve stem passes through the valve body and is rotatably connected to the valve body, and the valve plate is fixedly connected to the valve stem and located within the valve body, characterized in that: The pipeline along the direction of medium flow is sequentially provided with a medium inlet, a flushing interface, the filter-type steel-lined butterfly valve, a drain outlet, and a medium outlet; the valve plate is evenly provided with a plurality of filter holes, which penetrate through both end faces of the valve plate; the valve plate is driven to rotate within the valve body by a valve stem.

2. The filter-type steel-lined butterfly valve according to claim 1, characterized in that: The filter hole is a circular through hole.

3. The filter-type steel-lined butterfly valve according to claim 2, characterized in that: The diameter of the circular through hole is 2-5mm, and the spacing between adjacent filter holes is 1.5-2 times the diameter of the hole.

4. The filter-type steel-lined butterfly valve according to claim 1, characterized in that: The valve stem is equipped with a handwheel at one end, and the handwheel is detachably connected to the valve stem.

5. The filter-type steel-lined butterfly valve according to claim 1, characterized in that: The valve plate is circular, and its edge is provided with an elastic sealing ring.

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