Adjustable baffle valve for gas inlet system of gas turbine

Abstract

The adjustable baffle valve comprises a valve body, a mounting block and a valve rod are mounted above the valve body, an anti-aging mechanism is arranged behind the outer side of the valve rod, and the anti-aging mechanism comprises a smearing sponge, a fixing rod, a rotating bottom plate, a connecting pipe, a suction pipe, a lubricating box, an inlet, a protection box and a bolt. According to the adjustable baffle valve for the gas turbine air inlet system, by arranging the anti-aging mechanism, when the valve rod rotates, lubricating grease can be smeared on the valve rod, friction and abrasion of the valve rod can be reduced, in addition, the anti-blocking mechanism is arranged, a detachable filter screen is arranged on the inner side of the flange, and therefore the anti-blocking function is achieved. The valve is simple in structure, impurities contained in liquid and gas needing to circulate can be filtered, the situation that the interior of the valve is blocked is effectively avoided, the cleaning mechanism is arranged, the inner wall of the valve can be cleaned regularly, cleanliness of the interior of the valve is guaranteed, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of gas engine intake systems, and in particular to an adjustable flapper valve for gas engine intake systems. Background Art

[0002] A gas turbine is a power generation method that uses the heat energy generated by the combustion of combustibles to convert it into electrical energy through a power generation device. The main function of the adjustable flapper valve in a gas turbine is to effectively control the flow of gas and liquid, as well as to adjust the pressure and flow of the vacuum system. In a gas turbine system, this valve can be used to connect or cut off the airflow to ensure the normal operation and safety of the system;

[0003] The existing adjustable baffle valve for the intake system of the fuel engine drives the screw to move by setting a worm gear and a worm gear transmission, thereby driving the valve stem to move downward. The valve stem will be worn out due to long-term rotation. At the same time, the gas and liquid media circulate inside the baffle valve for a long time, and the inner wall of the baffle valve will stick to certain impurities. If the inner wall is not cleaned regularly, these impurities will corrode the inside of the valve and cause damage to the valve. In addition, the circulating gas and liquid will contain a large amount of debris. Failure to filter them will cause the valve to become blocked and other problems. For example, the utility model with the authorization announcement number CN219221274U discloses a pneumatic baffle valve, including: a valve body, the valve body including a baffle, the baffle is used to control the passage switch; a pneumatic component, the pneumatic component including a valve stem, the bottom end of the valve stem is connected to the baffle, and is used to control the up and down movement of the baffle; and also includes: a manual device, the manual device is connected to the worm, and is used to control the up and down movement of the worm in the event of a power outage. The utility model, by setting a manual device, can use the hand wheel to drive the screw through the worm gear transmission to drive the valve stem to move downward in the case of power failure, and use the reset spring to reset the valve stem to ensure the normal use of the flapper valve and improve production safety. At the same time, the screw and the valve stem are connected by a connecting sleeve. Under normal working conditions, the screw rises to the top and does not contact the valve stem, which will not affect the normal operation of the valve stem. However, this device drives the screw to move by setting the worm gear and worm gear transmission, thereby driving the valve stem to move downward, and the valve stem will be worn under long-term rotation. At the same time, the gas and liquid medium circulate inside the flapper valve for a long time, and the inner wall of the flapper valve will be adhered to certain impurities. If the inner wall is not cleaned regularly, these impurities will corrode the inside of the valve and cause damage to the valve. In addition, the circulating gas and liquid will contain a large amount of debris inside, and if they are not filtered, the valve will be blocked. Therefore, we propose an adjustable flapper valve for the gas turbine intake system to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide an adjustable baffle valve for a fuel engine intake system to solve the problem of the adjustable baffle valve for a fuel engine intake system proposed in the above-mentioned background technology. By setting a worm gear and a worm transmission, the screw is driven to move, thereby driving the valve stem to move downward. The valve stem will be worn due to long-term rotation. At the same time, the gas and liquid media circulate inside the baffle valve for a long time, and the inner wall of the baffle valve will be adhered to certain impurities. If the inner wall is not cleaned regularly, these impurities will corrode the interior of the valve and cause damage to the valve. In addition, the circulating gas and liquid will contain a large amount of debris. If they are not filtered, the valve will be blocked.

[0005] To achieve the above object, the present invention provides the following technical solution: an adjustable flapper valve for a combustion engine intake system, comprising:

[0006] A valve body, with a mounting block mounted on the top of the valve body;

[0007] Also includes:

[0008] The valve stem is provided with an anti-aging mechanism at the outer rear of the valve stem, wherein the anti-aging mechanism comprises a smear sponge, a fixed rod, a rotating bottom plate, a connecting pipe, a suction pipe, a lubrication box, an inlet, a protection box and a bolt, a smear sponge is tightly fitted at the upper outer rear of the valve stem, and the smear sponge is clamped and arranged inside the fixed rod, and a rotating bottom plate is rotatably installed below the fixed rod, and the rotating bottom plate is clamped and connected with the fixed rod;

[0009] A flange, wherein an anti-clogging mechanism is arranged inside the flange, wherein the anti-clogging mechanism comprises a fixed ring, a fixed block, a rotating plate, a first magnet, a filter screen and a second magnet, wherein a fixed ring is fixedly installed inside the flange, and the interior of the fixed ring is hollow, and a fixed block is installed at an equal angle on the outside of the fixed ring, and a rotating plate is rotatably connected to the outside of the fixed block.

[0010] Preferably, a valve stem is rotatably arranged inside the valve body, a first handle is fixedly connected to the upper end of the valve stem, and a hose is arranged on the lower outer side of the valve stem.

[0011] Preferably, a connecting pipe is fixedly connected to the rear side of the fixing rod, a suction pipe is installed in the middle of the connecting pipe, a lubrication box is connected to the rear side of the connecting pipe, and an inlet is arranged above the rear side of the lubrication box.

[0012] Preferably, the lubrication box is installed inside the protection box, and the protection box and the mounting block are fixedly installed by bolts.

[0013] Preferably, a baffle body is installed at the lower end of the valve stem, and a piston is installed below the baffle body, and the piston is threadedly connected to the lower connecting port.

[0014] Preferably, a lower connecting port is installed below the valve body, and a side connecting port is installed on the front side of the valve body, and flanges are installed outside the lower connecting port and the side connecting port, and a sealing ring is provided on the outer side of the flange.

[0015] Preferably, a first magnet is installed on the inner side of the rotating plate, and the first magnet is adsorbed and connected to the second magnet, and the second magnet is installed on the outer side of the filter at an equal angle, and the filter is arranged inside the flange.

[0016] Preferably, a second scraper is installed on the outer side of the baffle body, and the second scraper is tightly fitted to the inner wall of the valve body.

[0017] Preferably, a protective shell is provided inside the lower connecting port and the side connecting port, and a first bevel gear is rotatably installed inside the protective shell, and a second bevel gear is meshingly connected to the outer side of the first bevel gear, and a second handle is installed on the outer end of the second bevel gear.

[0018] Preferably, a first scraper is provided on the outer side of the first bevel gear, and the first scraper is tightly fitted with the inner walls of the lower connecting port and the side connecting port.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the adjustable flapper valve for the intake system of a combustion engine is provided with an anti-aging mechanism, and grease can be applied to the valve stem when the valve stem rotates, thereby reducing the friction and wear of the valve stem; in addition, an anti-blocking mechanism is provided, and a detachable filter screen is provided on the inner side of the flange, which can filter the impurities contained in the liquid and gas to be circulated, thereby effectively avoiding the blockage inside the valve; secondly, a cleaning mechanism is provided, and the inner wall of the valve can be cleaned regularly, thereby ensuring the cleanliness of the inside of the valve and extending the service life of the valve;

[0020] 1. A smear sponge, a fixed rod, a rotating base plate and a connecting pipe are provided. The valve stem is provided in the middle of the valve body. The valve stem can be adjusted to move up and down by rotating the first handle. A smear sponge is provided in close contact with the outer rear of the valve stem. The smear sponge is installed in the interior of the fixed rod. The rear side of the fixed rod is connected to the connecting pipe. The rear side of the connecting pipe is connected to the lubrication box. The interior of the lubrication box stores grease. At the same time, a protective box is provided on the outer side of the lubrication box for protection. The protective box is fixed to the mounting block by bolts. When the valve stem rotates and moves, the suction pipe provided in the middle of the connecting pipe can be pinched to absorb the grease in the lubrication box. The grease then enters the fixed rod through the connecting pipe and is then absorbed by the smear sponge inside the fixed rod. Since the smear sponge is in close contact with the valve stem, that is, when the valve stem rotates and moves, the smear sponge can evenly apply lubricating oil to the valve stem.

[0021] 2. The baffle body and the piston are arranged. The baffle body is installed at the lower end of the valve stem. The baffle body is tightly fitted with the upper part of the inner part of the lower connection port to block the flow of liquid and gas. However, if the baffle body is used alone for blocking, there will be no sealing. That is, a piston is arranged under the baffle body. The piston is threadedly connected to the inner side of the lower connection port, which increases the sealing of the connection between the baffle body and the lower connection port.

[0022] 3. A fixed ring, a fixed block, a rotating plate and a first magnet are provided. The fixed ring is installed on the inner side of the flange, and the interior of the fixed ring is hollow, which does not affect the circulation of the medium. At the same time, a fixed block is provided at an equal angle on the outer side of the fixed ring, and a rotating plate is rotatably provided on the outer side of the fixed block. The first magnet is installed above the rotating plate, that is, the filter is placed on the inner side of the fixed ring and the rotating plate, and the second magnet is provided at an equal angle on the outer side of the filter. When the filter is placed between the fixed ring and the rotating plate, the second magnet provided on the outer side of the filter can be adsorbed and connected with the first magnet installed in the rotating plate, that is, the filter is firmly installed on the inner side of the flange, and the debris inside the medium that needs to circulate can be filtered to ensure that the valve will not be blocked.

[0023] 4. A sealing ring, a first scraper, a first bevel gear and a second bevel gear are provided. A protective shell is provided inside the lower connecting port and the side connecting port. The second bevel gear is rotatably installed inside the protective shell, and a second handle is installed on the outside of the second bevel gear. The second handle is located outside the lower connecting port and the side connecting port. The second bevel gear can be rotated by holding the second handle with hand, and the rotation of the second bevel gear will drive the meshing first bevel gear to rotate. At the same time, a first scraper is installed on the outside of the first bevel gear. The first scraper is tightly fitted to the inner walls of the lower connecting port and the side connecting port. When the first bevel gear rotates, the first scraper can be rotated to scrape the inside of the lower connecting port and the side connecting port, which can effectively scrape off the attachments on the inner walls of the lower connecting port and the side connecting port to ensure the cleanliness of the inside of the valve.

[0024] 5. A sealing ring is provided. By providing a sealing ring on the outside of the flange, the sealing ring can be rotated and can be fixedly installed at the connection between the flange and the pipeline by bolts, thereby enhancing the sealing of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a perspective structural schematic diagram of the present invention;

[0026] Figure 2 It is a perspective cross-sectional structural schematic diagram of the present invention;

[0027] Figure 3 This is a perspective structural diagram of the connection between the flange, the fixing ring and the fixing block of the present invention;

[0028] Figure 4 It is a perspective structural diagram of the inlet, the protection box and the bolt connection of the present invention;

[0029] Figure 5 It is a perspective structural diagram of the connection between the first bevel gear, the second bevel gear and the second handle of the present invention;

[0030] Figure 6 It is a perspective structural diagram of the connection between the rotating plate, the first magnet and the filter screen of the present invention;

[0031] Figure 7 It is a perspective structural diagram of the connection between the hose, the baffle body and the piston of the present invention;

[0032] Figure 8 This is a perspective structural diagram of the connection between the smear sponge, the fixing rod and the rotating bottom plate of the present invention;

[0033] Fig. 9 It is a perspective structural diagram of the connection between the first scraper, the second handle and the protective shell of the present invention;

[0034] Fig.10 This is a perspective structural diagram of the connection between the mounting block, the valve stem and the first handle of the present invention.

[0035] In the figure: 1. valve body; 2. mounting block; 3. valve stem; 4. first handle; 5. smear sponge; 6. fixing rod; 7. rotating bottom plate; 8. connecting pipe; 9. suction pipe; 10. lubrication box; 11. inlet; 12. protection box; 13. bolt; 14. hose; 15. baffle body; 16. piston; 17. lower connection port; 18. flange; 19. fixing ring; 20. fixing block; 21. rotating plate; 22. first magnet; 23. filter screen; 24. second magnet; 25. sealing ring; 26. first scraper; 27. first bevel gear; 28. second bevel gear; 29. ​​second handle; 30. protective shell; 31. side connection port; 32. second scraper. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 10 , the present invention provides a technical solution:

[0038] Embodiment 1: In order to solve the problems existing in the prior art, the present embodiment adopts the following technical scheme: an adjustable baffle valve for a gas engine intake system is provided with a valve body 1, and a mounting block 2 is provided above the valve body 1; an anti-aging mechanism is provided at the upper outer rear of a valve stem 3. When the valve stem 3 rotates and moves, the smear sponge 5 is closely fitted with the valve stem 3, and the smear sponge 5 can absorb grease and evenly smear the valve stem 3; an anti-blocking mechanism is provided on the inner side of a flange 18, and a filter screen 23 can be used to effectively filter and block debris in the fluid medium, thereby ensuring the normal operation of the valve; a cleaning mechanism is provided inside the valve body 1, the lower connecting port 17 and the side connecting port 31, and can clean the inner wall of the valve, thereby ensuring that the inside of the valve is clean, thereby extending the service life of the valve;First, manually turn the first handle 4, which will drive the connected valve stem 3 to rotate and move upward. A hose 14 is provided on the outside of the valve stem 3 for protection. At the same time, a smear sponge 5 is tightly fitted on the upper outer rear of the valve stem 3, and the smear sponge 5 is installed inside the fixed rod 6. When the valve stem 3 rotates and moves, the suction tube 9 provided in the middle of the connecting tube 8 connected to the rear side of the fixed rod 6 is pinched by hand. The suction tube 9 can absorb the grease inside the lubrication box 10 connected to the connecting tube 8, so that the grease enters the inner side of the fixed rod 6 and is absorbed by the smear sponge 5. That is, when the valve stem 3 rotates and moves, the smear sponge 5 will evenly apply grease to the valve stem 3, which can reduce the valve stem. 3, and when the valve stem 3 rotates and moves upward, since the baffle body 15 is installed at the lower end of the valve stem 3, a piston 16 is arranged below the baffle body 15 and is threadedly connected with the lower connection port 17, that is, the piston 16 will fall off from the lower connection port 17 as the valve stem 3 rotates, allowing the medium to flow. The setting of the piston 16 increases the sealing between the baffle body 15 and the lower connection port 17. At the same time, flanges 18 are arranged on the outside of the lower connection port 17 and the side connection port 31 installed on the outside of the valve body 1, and a filter screen 23 is arranged inside the flange 18. The filter screen 23 can filter and separate the debris in the medium entering the valve, which can ensure that the valve body 1 No blockage will occur inside. In addition, a protective shell 30 is provided inside the lower connection port 17 and the side connection port 31. A second bevel gear 28 is rotatably provided inside the protective shell 30, and a second handle 29 is installed on the outside of the second bevel gear 28. The second handle 29 is located on the outside of the lower connection port 17 and the side connection port 31, which is convenient for employees to rotate. That is, when the second handle 29 is rotated, the second bevel gear 28 will also rotate, and the second bevel gear 28 will drive the meshing first bevel gear 27 to rotate together. Since the first scraper 26 is provided on the lower outer side of the first bevel gear 27, the first scraper 26 is connected to the lower connection port 17 and the side connection port 31. The inner wall of the valve body 1 is tightly fitted together, that is, when the first scraper 26 scrapes, the inner wall of the lower connection port 17 and the side connection port 31 can be cleaned. Secondly, a second scraper 32 is arranged on the outer side of the baffle body 15, and the second scraper 32 and the inner wall of the valve body 1 are also tightly fitted together, that is, when the valve stem 3 rotates and moves, the baffle body 15 will drive the second scraper 32 to rotate and move at the same time, and the second scraper 32 can scrape the inner wall of the valve body 1, that is, the first scraper 26 and the second scraper 32 can clean the inner wall of the valve to prevent sticky objects from being on the inner wall of the valve. In addition, a sealing ring 25 is arranged on the outer side of the flange 18 to enhance the sealing performance of the flange 18 and the pipeline connection. ;

[0039] The existing adjustable flapper valve drives the screw to move by setting a worm gear and a worm gear, thereby driving the valve stem 3 to move upward and downward. However, the valve stem 3 will be worn out after a long period of rotation. Figure 1 , Figure 2 and Figure 8 As shown, the anti-aging mechanism includes a smear sponge 5 tightly arranged on the rear side of the valve stem 3, the smear sponge 5 is snap-fitted and installed inside the fixing rod 6, and the rear side of the fixing rod 6 is connected to a connecting pipe 8, and the rear side of the connecting pipe 8 is connected to a lubrication box 10, and grease is stored inside the lubrication box 10. At the same time, a protective box 12 is provided on the outside of the lubrication box 10 for protection. The protective box 12 is transparent, which is convenient for observing the remaining grease inside the lubrication box 10. The protective box 12 is fixed to the mounting block 2 by bolts 13. When the valve stem 3 rotates and moves, the suction tube 9 provided in the middle of the connecting pipe 8 can be pinched to absorb the grease inside the lubrication box 10, and then The lubricant enters the fixed rod 6 through the connecting tube 8 and is then absorbed by the smear sponge 5 inside the fixed rod 6. Since the smear sponge 5 fits tightly against the valve stem 3, that is, when the valve stem 3 rotates and moves, the smear sponge 5 can evenly apply lubricant to the valve stem 3. In addition, an inlet 11 is provided on the upper rear side of the lubrication box 10, and lubricant can be poured into the lubrication box 10 from the inlet 11. Secondly, a rotating base plate 7 is rotatably provided below the fixed rod 6, and the rotating base plate 7 is snap-connected to the fixed rod 6. That is, when the smear sponge 5 has been used for too long, the rotating base plate 7 can be rotated downward to pull the smear sponge 5 out of the fixed rod 6 from the bottom for replacement.

[0040] Example 2: In the existing adjustable flapper valve, the gas and liquid media flow inside the flapper valve for a long time, and the inner wall of the flapper valve will be adhered to certain impurities. If the inner wall is not cleaned regularly, these impurities will corrode the inside of the valve, causing damage to the valve, such as Figure 2 , Figure 5 and Figure 7As shown, the cleaning mechanism includes a protective shell 30 arranged inside the lower connection port 17 and the side connection port 31, and the second bevel gear 28 is rotatably installed inside the protective shell 30, and the second handle 29 is installed on the outside of the second bevel gear 28. The second handle 29 is located outside the lower connection port 17 and the side connection port 31. The second bevel gear 28 can be rotated by holding the second handle 29 by hand, and the second bevel gear 28 will drive the meshing first bevel gear 27 to rotate after the second bevel gear 28 rotates. At the same time, a first scraper 26 is installed on the outside of the first bevel gear 27, and the first scraper 26 is connected to the lower connection port 17. The inner walls of the port 17 and the side connection port 31 are tightly fitted together. When the first bevel gear 27 rotates, the first scraper 26 can rotate to scrape the inside of the lower connection port 17 and the side connection port 31, which can effectively scrape off the attachments on the inner walls of the lower connection port 17 and the side connection port 31 to ensure the cleanliness of the inside of the valve. At the same time, a second scraper 32 is arranged on the outer side of the baffle body 15. The second scraper 32 is tightly fitted with the inner wall of the valve body 1, that is, when the valve stem 3 rotates and moves, the second scraper 32 will also rotate therewith to clean the inner wall of the valve body 1.

[0041] Embodiment 3: In the existing adjustable flapper valve, the gas and liquid flowing through it will contain a lot of debris. If they are not filtered, the valve will be blocked. Figure 1 , Figure 3 and Figure 6 As shown, the anti-clogging mechanism includes a fixed ring 19 arranged inside the flange 18. The interior of the fixed ring 19 is hollow and does not affect the circulation of the medium. At the same time, a fixed block 20 is arranged at an equal angle on the outside of the fixed ring 19, and a rotating plate 21 is rotatably arranged on the outside of the fixed block 20. A first magnet 22 is installed above the rotating plate 21, that is, a filter screen 23 is placed on the inner side of the fixed ring 19 and the rotating plate 21, and a second magnet 24 is installed at an equal angle on the outer side of the filter screen 23. When the filter screen 23 is placed between the fixed ring 19 and the rotating plate 21, the second magnet 24 arranged on the outer side of the filter screen 23 can be adsorbed and connected with the first magnet 22 installed in the rotating plate 21, that is, the filter screen 23 is firmly installed on the inner side of the flange 18, and the debris inside the medium that needs to flow can be filtered to ensure that the valve will not be blocked.

[0042] This is the entire working process of the adjustable flapper valve used in the gas engine intake system. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0043] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable flapper valve for a combustion engine intake system, comprising: A valve body (1), wherein a mounting block (2) is mounted above the valve body (1); It is characterized by further comprising: A valve stem (3), wherein an anti-aging mechanism is arranged at the outer rear of the valve stem (3), wherein the anti-aging mechanism comprises a smear sponge (5), a fixed rod (6), a rotating bottom plate (7), a connecting pipe (8), a suction pipe (9), a lubrication box (10), an inlet (11), a protection box (12) and a bolt (13); the smear sponge (5) is tightly fitted at the upper outer rear of the valve stem (3), and the smear sponge (5) is clamped and arranged inside the fixed rod (6), and a rotating bottom plate (7) is rotatably installed below the fixed rod (6), and the rotating bottom plate (7) is clamped and connected with the fixed rod (6); A flange (18), wherein an anti-blocking mechanism is arranged inside the flange (18), wherein the anti-blocking mechanism comprises a fixed ring (19), a fixed block (20), a rotating plate (21), a first magnet (22), a filter screen (23) and a second magnet (24); the fixed ring (19) is fixedly installed inside the flange (18), and the interior of the fixed ring (19) is hollow, and the fixed block (20) is installed at an equal angle on the outside of the fixed ring (19), and the rotating plate (21) is rotatably connected to the outside of the fixed block (20).

2. The adjustable flapper valve for a combustion engine intake system according to claim 1, characterized in that: A valve stem (3) is rotatably arranged inside the valve body (1), a first handle (4) is fixedly connected to the upper end of the valve stem (3), and a hose (14) is arranged on the lower outer side of the valve stem (3).

3. The adjustable flapper valve for a combustion engine intake system according to claim 1, characterized in that: The rear side of the fixed rod (6) is fixedly connected to a connecting pipe (8), a suction pipe (9) is installed in the middle of the connecting pipe (8), the rear side of the connecting pipe (8) is connected to a lubrication box (10), and an inlet (11) is arranged above the rear side of the lubrication box (10).

4. The adjustable flapper valve for a combustion engine intake system according to claim 3, characterized in that: The lubrication box (10) is installed inside the protection box (12), and the protection box (12) and the mounting block (2) are fixedly installed by bolts (13).

5. The adjustable flapper valve for a combustion engine intake system according to claim 2, characterized in that: A baffle body (15) is installed at the lower end of the valve stem (3), and a piston (16) is installed below the baffle body (15), and the piston (16) is threadedly connected to the lower connection port (17).

6. The adjustable flapper valve for a combustion engine intake system according to claim 2, characterized in that: A lower connection port (17) is installed below the valve body (1), and a side connection port (31) is installed on the front side of the valve body (1). Flanges (18) are installed outside the lower connection port (17) and the side connection port (31), and a sealing ring (25) is provided on the outside of the flange (18).

7. The adjustable flapper valve for a combustion engine intake system according to claim 1, characterized in that: A first magnet (22) is installed on the inner side of the rotating plate (21), and the first magnet (22) is adsorbed and connected to the second magnet (24), and the second magnet (24) is installed at the same angle on the outer side of the filter screen (23), and the filter screen (23) is arranged inside the flange (18).

8. The adjustable flapper valve for a combustion engine intake system according to claim 5, characterized in that: A second scraper (32) is installed on the outer side of the baffle body (15), and the second scraper (32) is tightly fitted to the inner wall of the valve body (1).

9. The adjustable flapper valve for a combustion engine intake system according to claim 5, characterized in that: A protective shell (30) is disposed inside the lower connection port (17) and the side connection port (31), and a first bevel gear (27) is rotatably mounted inside the protective shell (30), and a second bevel gear (28) is meshingly connected to the outer side of the first bevel gear (27), and a second handle (29) is mounted on the outer end of the second bevel gear (28).

10. The adjustable flapper valve for a combustion engine intake system according to claim 9, characterized in that: A first scraper (26) is provided on the outer side of the first bevel gear (27), and the first scraper (26) is tightly fitted with the inner walls of the lower connecting port (17) and the side connecting port (31).

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