Dustproof butterfly valve with high sealing performance

Abstract

The high-sealing-performance dustproof butterfly valve comprises a valve body, a filtering mechanism and a cleaning mechanism, the valve body is fixedly connected with an inlet and an outlet, the upper end of the valve body is fixedly connected with a valve element switch, an interlayer is arranged in the valve body, the inner wall of the interlayer is fixedly connected with a plurality of sets of heat dissipation fins, and the heat dissipation fins are fixedly connected with the filtering mechanism. The multiple sets of cooling fins are distributed on the inner wall of the interlayer at equal intervals, the upper end of the valve body is fixedly connected with a dismounting opening, the dismounting opening communicates with the interior of the valve body, and the upper end of the dismounting opening is fixedly connected with an end cover. The filtering mechanism is used for filtering impurities in the conveyed fluid; by means of the structure, the filter plate can be conveniently taken out to be cleaned or replaced, and the function that the valve is blocked emergently when the valve cannot be normally closed is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of butterfly valves, and in particular to a dust-proof butterfly valve with high sealing performance. Background Art

[0002] In industrial production and various fluid delivery systems, butterfly valves, as commonly used control components, play a vital role. However, traditional butterfly valves have exposed many problems in actual application.

[0003] A butterfly valve disclosed in the China Patent Network, whose patent publication number is "CN117780947B", is mainly provided with a valve body, a valve plate and a valve stem, wherein a flow groove penetrating the valve body is provided in the middle of the valve body, a sliding member sliding relative to the valve body is provided on one side of the valve plate, a first stabilizing groove is provided on the inner side of the valve body, a spring is installed in the first stabilizing groove, a first stabilizing block is connected to the other end of the spring, both sides of the first stabilizing block away from the end of the first stabilizing groove are arranged as inclined surfaces, a second stabilizing groove with an inward groove is provided on the side of the valve plate, a stabilizing member is installed in the second stabilizing groove, thereby increasing the stability of the butterfly valve when it is in a closed state, but the invention is difficult to solve during use, the problem that the filter screen is easily blocked and difficult to disassemble when conveying fluid with impurities, and the problem that the valve cannot be closed in an emergency situation, resulting in increased losses, in order to solve the above problems, the present invention proposes a new dust-proof butterfly valve with high sealing performance. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a dust-proof butterfly valve with high sealing performance.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A dust-proof butterfly valve with high sealing performance, comprising a valve body, a filtering mechanism and a cleaning mechanism: The valve body is fixedly connected with an inlet, the valve body is fixedly connected with an outlet, the upper end of the valve body is fixedly connected with a valve core switch, an interlayer is provided in the valve body, the inner wall of the interlayer is fixedly connected with multiple groups of heat dissipation fins, and the multiple groups of heat dissipation fins are evenly spaced on the inner wall of the interlayer, the upper end of the valve body is fixedly connected with a disassembly port, the disassembly port is connected with the inside of the valve body, and the upper end of the disassembly port is fixedly connected with an end cover; The filtering mechanism is used to filter impurities in the transported fluid; The cleaning mechanism is used for cleaning the filtering mechanism.

[0006] Preferably, the filtering mechanism is composed of a filter plate, a pull rod, two handles, and a sealing plate. The pull rod is fixedly connected to the upper end of the filter plate, and the pull rod is fixedly connected to the lower end of the sealing plate. The two handles are symmetrically and fixedly connected to the upper end of the sealing plate. A plurality of groups of densely distributed filter holes are formed in the filter plate. The sealing plate is slidably connected in the disassembly opening, and a plug valve mechanism of an emergency shut-off valve is arranged in the filtering mechanism.

[0007] Preferably, the plug valve mechanism is composed of two shell-breaking columns, a sealing inclined plate, and a water-absorbing bag. The two shell-breaking columns sequentially penetrate and are slidably connected to the sealing plate and the end cover. The pull rod penetrates and is fixedly connected to the sealing inclined plate, and the water-absorbing bag is placed on the upper end of the sealing inclined plate.

[0008] Preferably, the cleaning mechanism is composed of a support column, a rotating shaft, and five cleaning fan blades. The support column is fixedly connected to the inner wall of the valve body, the rotating shaft is rotatably connected to the side wall of the support column, and the five cleaning fan blades are equally spaced and fixedly connected to the outer wall of the axial direction of the rotating shaft.

[0009] Preferably, a guiding bevel angle is formed on the cleaning fan blade, and the cleaning inclined surface of the cleaning fan blade is attached to the filter plate.

[0010] Preferably, a high-pressure air pipe is fixedly connected to the outer wall of the valve body, and a plurality of groups of air holes communicating with the interlayer are formed on the outer wall of the valve body.

[0011] Preferably, a breaking groove is formed on the sealing inclined plate, and the water-absorbing bag is filled with a polymer nano water-absorbing resin inside.

[0012] The present invention has the following beneficial effects: 1. By arranging the interlayer and the heat dissipation fins, the temperature of the high-temperature fluid can be effectively reduced, the sealing member can be prevented from aging due to high temperature, the service life of the valve can be prolonged, and high sealing performance can be ensured. The filter plate can be conveniently taken out for cleaning or replacement by means of the end cover, the handle and the pull rod, improving the convenience of maintenance. The combination of the high-pressure air pipe and the air holes can not only assist in heat dissipation, quickly take away the heat of the heat dissipation fins, but also clean the dust on the surface of the valve body, maintain the heat dissipation efficiency, and enhance the operation stability and reliability.

[0013] 2. The plug valve mechanism is added. When the pipeline pressure rises abnormally or the fluid leaks and the valve cannot be normally closed, the operator uses a common tool to break the shell-breaking column to trigger the plug valve mechanism. The sealing inclined plate breaks at the breaking groove, and the polymer nano water-absorbing resin in the water-absorbing bag quickly expands, and jointly with the sealing inclined plate, urgently blocks the internal channel of the valve body to prevent the fluid from flowing, avoiding the deterioration of the danger, and improving the safety under complex working conditions and the ability to cope with emergencies.

[0014] 3. In the added cleaning mechanism, the cleaning fan blades continuously rotate under the action of the fluid force, and their cleaning inclined surfaces scrape the surface of the filter plate to remove the attached crystal impurities, prevent the filter holes from being blocked, maintain the normal operation of the filtering mechanism, ensure the fluid filtering effect and the output cleanliness, reduce the frequent maintenance caused by impurity blockage, lower the maintenance cost, and improve the stability and filtering efficiency during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of a highly sealed dust-proof butterfly valve proposed by the present invention; Figure 2 FIG. is a schematic internal structure diagram of the disassembly port; Figure 3 FIG. is a schematic diagram of the cleaning mechanism; Figure 4 FIG. is a schematic internal structure diagram of the valve body; Figure 5 FIG. is a schematic structural diagram of the sealing inclined plate.

[0016] In the figure: 1 valve body, 2 inlet, 3 outlet, 4 valve core switch, 5 disassembly port, 6 end cover, 7 high-pressure air pipe, 8 support column, 9 rotating shaft, 10 cleaning fan blades, 11 filter plate, 12 filter holes, 501 handle, 502 sealing plate, 503 shell-breaking column, 504 pull rod, 505 sealing inclined plate, 506 water absorption bag, 507 breaking groove, 103 interlayer, 104 heat dissipation fins, 102 air holes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1:

[0018] Referring to Figures 1-4 , a highly sealed dust-proof butterfly valve includes a valve body 1, a filtering mechanism, and a cleaning mechanism. The valve body 1 is fixedly connected with an inlet 2, the valve body 1 is fixedly connected with an outlet 3, the upper end of the valve body 1 is fixedly connected with a valve core switch 4, an interlayer 103 is arranged inside the valve body 1, and a plurality of groups of heat dissipation fins 104 are fixedly connected to the inner wall of the interlayer 103. The plurality of groups of heat dissipation fins 104 are equally spaced on the inner wall of the interlayer 103. The upper end of the valve body 1 is fixedly connected with a disassembly port 5, the disassembly port 5 is communicated with the inside of the valve body 1, and the upper end of the disassembly port 5 is fixedly connected with an end cover 6; The filtering mechanism is used to filter impurities in the conveyed fluid; The cleaning mechanism is used to clean the filtering mechanism.

[0019] The filtering mechanism is composed of a filter plate 11, a pull rod 504, two handles 501, and a sealing plate 502. The pull rod 504 is fixedly connected to the upper end of the filter plate 11, and the pull rod 504 is fixedly connected to the lower end of the sealing plate 502. The two handles 501 are symmetrically and fixedly connected to the upper end of the sealing plate 502. A plurality of groups of densely distributed filter holes 12 are formed in the filter plate 11. The sealing plate 502 is slidably connected in the disassembly opening 5. A shut-off valve mechanism of an emergency shut-off valve is arranged in the filtering mechanism.

[0020] A high-pressure air pipe 7 is fixedly connected to the outer wall of the valve body 1, and a plurality of groups of air holes 102 communicating with the interlayer 103 are formed in the outer wall of the valve body 1. It should be noted that a one-way solenoid valve is arranged in the high-pressure air pipe 7, and the end of the high-pressure air pipe 7 far from the valve body 1 is connected to an air pump. It should be noted that a sealing strip is arranged around the sealing plate 502, and the sealing plate 502 is hermetically connected to the disassembly opening 5.

[0021] In this embodiment, the fluid flows into the valve body 1 from the inlet 2, flows inside the valve body 1, and then flows out through the outlet 3. An interlayer 103 is arranged inside the valve body 1, and a plurality of groups of heat dissipation fins 104 are fixedly connected to the inner wall of the interlayer 103 at equal intervals. When the fluid with a higher temperature flows through the valve body 1, the heat will be conducted to the interlayer 103 through the wall of the valve body 1. The heat dissipation fins 104 greatly increase the heat dissipation area, dissipate the heat into the surrounding environment, and thus reduce the fluid temperature. This helps to maintain the valve within an appropriate working temperature range, prevent the sealing parts from aging due to high temperature, thereby extending the service life of the valve and ensuring its sealing performance. During the flow of the fluid inside the valve body 1, it will pass through the filter plate 11. The plurality of groups of densely distributed filter holes 12 on the filter plate 11 will filter out impurities in the fluid, purify the transported fluid, ensure the cleanliness of the output fluid, and avoid damage to downstream equipment caused by impurities. The filter plate 11 is connected to the sealing plate 502 through the pull rod 504, and the two handles 501 are symmetrically installed on the upper end of the sealing plate 502. When it is necessary to clean or replace the filter plate 11, only the end cover 6 needs to be disassembled, and the operator can hold the handle 501, slide the sealing plate 502 upward along the disassembly opening 5 to take it out, and then pull out the filter plate 11 through the pull rod 504 for thorough cleaning or replacement.

[0022] Furthermore, when the temperature of the valve body reaches a certain range, the air pump connected to the high-pressure air pipe 7 starts to work, and high-pressure gas is introduced into the interlayer 103 through the high-pressure air pipe 7. The high-pressure gas first enters the interlayer 103, quickly takes away the heat of the heat dissipation fins 104, and then is discharged through the air holes 102. While the gas is discharged, the dust adhering to the surface of the valve body 1 is cleaned, avoiding the accumulation of dust and affecting the heat dissipation efficiency. Embodiment Two:

[0023] Further, in this embodiment, compared with the first embodiment, the plug valve mechanism consists of two shell-breaking columns 503, a sealing inclined plate 505, and a water-absorbing bag 506. The two shell-breaking columns 503 sequentially pass through and are slidably connected to the sealing plate 502 and the end cover 6. The pull rod 504 passes through and is fixedly connected to the sealing inclined plate 505. The water-absorbing bag 506 is placed on the upper end of the sealing inclined plate 505. A breaking groove 507 is provided on the sealing inclined plate 505. The interior of the water-absorbing bag 506 is filled with a polymer nano water-absorbing resin. It should be noted that the shell-breaking column 503 is hermetically connected to the sealing plate 502. It should be noted that the water-absorbing bag 506 is placed in front of the pull rod 504, and the breaking groove 507 is opened in front of the pull rod 504. In this way, when the sealing inclined plate 505 breaks at the breaking groove 507, the water-absorbing bag 506 will directly fall in front of the filter plate 11 and can be blocked by the filter plate 11 and cooperate with the filter plate 11 to achieve a blocking effect.

[0024] Further, in this embodiment, in the event of an emergency, such as a sudden abnormal increase in pressure in the pipeline or a fluid leakage, when it is necessary to urgently close the valve and the valve cannot be normally closed, the operator only needs to take a commonly used tool in the factory and smash the shell-breaking column 503 forcefully downward. The shell-breaking column 503 sequentially passes through the sealing plate 502 and the end cover 6 and moves downward at high speed, and then impacts the sealing inclined plate 505. Under the impact of the shell-breaking column 503, the sealing inclined plate 505 breaks at the breaking groove 507, and the water-absorbing bag falls into the interior of the valve body 1 and in front of the filter plate 11. At this time, the polymer nano water-absorbing resin inside the water-absorbing bag 506 quickly absorbs the surrounding moisture and swells. The swollen resin and the sealing inclined plate 505 act together to fill the internal channel of the valve body 1, achieve emergency plugging, and prevent the fluid from flowing continuously. Embodiment Three:

[0025] Compared with the second embodiment, in this embodiment, the cleaning mechanism consists of a support column 8, a rotating shaft 9, and five cleaning fan blades 10. The cleaning support column 8 is fixedly connected to the inner wall of the valve body 1. The rotating shaft 9 is rotatably connected to the side wall of the support column 8. The five cleaning fan blades 10 are equidistantly and fixedly connected to the outer wall of the axial direction of the rotating shaft 9.

[0026] In this embodiment, when the fluid flows in the valve body 1, the acting force generated by its flow will drive the cleaning fan blades 10 to rotate. As the cleaning fan blades 10 continue to rotate, their cleaning inclined surfaces continuously scrape the surface of the filter plate 11, scraping off the crystal impurities attached to the surface of the filter plate 11, thereby realizing the cleaning of the filter plate 11. This process can ensure that the filter holes 12 of the filter plate 11 will not be blocked by impurities and maintain the normal operation of the filtering mechanism.

[0027] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A dust-proof butterfly valve with high sealing performance, comprising a valve body (1), a filtering mechanism, and a cleaning mechanism, characterized in that: The valve body (1) is fixedly connected with an inlet (2), the valve body (1) is fixedly connected with an outlet (3), the upper end of the valve body (1) is fixedly connected with a valve core switch (4), a sandwich layer (103) is arranged inside the valve body (1), a plurality of heat dissipation fins (104) are fixedly connected to the inner wall of the sandwich layer (103), and the plurality of heat dissipation fins (104) are evenly distributed on the inner wall of the sandwich layer (103). The upper end of the valve body (1) is fixedly connected with a disassembly port (5), the disassembly port (5) is communicated with the inside of the valve body (1), and the upper end of the disassembly port (5) is fixedly connected with an end cover (6); The filtering mechanism is used for filtering impurities in the conveyed fluid; The cleaning mechanism is used for cleaning the filtering mechanism.

2. The high-sealing dust-proof butterfly valve according to claim 1, characterized in that, The filtering mechanism is composed of a filter plate (11), a pull rod (504), two handles (501), and a sealing plate (502). The pull rod (504) is fixedly connected to the upper end of the filter plate (11), the pull rod (504) is fixedly connected to the lower end of the sealing plate (502), and the two handles (501) are symmetrically fixedly connected to the upper end of the sealing plate (502). A plurality of densely distributed filter holes (12) are formed in the filter plate (11), the sealing plate (502) is slidably connected in the disassembly port (5), and a plug valve mechanism for an emergency shut-off valve is arranged in the filtering mechanism.

3. The high-sealing dust-proof butterfly valve according to claim 2, wherein, The plug valve mechanism is composed of two shell-breaking columns (503), a sealing inclined plate (505), and a water absorption bag (506). The two shell-breaking columns (503) sequentially penetrate and are slidably connected to the sealing plate (502) and the end cover (6), the pull rod (504) penetrates and is fixedly connected to the sealing inclined plate (505), and the water absorption bag (506) is placed on the upper end of the sealing inclined plate (505).

4. A highly sealed dust-proof butterfly valve according to claim 1, characterized in that, The cleaning mechanism is composed of a support column (8), a rotating shaft (9), and five cleaning fan blades (10). The support column (8) is fixedly connected to the inner wall of the valve body (1), the rotating shaft (9) is rotatably connected to the side wall of the support column (8), and the five cleaning fan blades (10) are evenly fixedly connected to the outer wall of the axial direction of the rotating shaft (9).

5. The high-sealing dust-proof butterfly valve according to claim 4, characterized in that, The cleaning fan blade (10) is provided with a guiding bevel angle, and the cleaning inclined surface of the cleaning fan blade (10) is attached to the filter plate (11).

6. The dust-proof butterfly valve with high sealing performance according to claim 1 is characterized in that, The outer wall of the valve body (1) is fixedly connected with a high-pressure air pipe (7), and a plurality of air holes (102) communicated with the sandwich layer (103) are formed on the outer wall of the valve body (1).

7. The dust-proof butterfly valve with high sealing performance according to claim 3, characterized in that, A breaking groove (507) is formed in the sealing inclined plate (505), and the water absorption bag (506) is filled with a polymer nano water absorption resin inside.

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