A high temperature resistant butterfly valve for engine

Abstract

The present invention discloses a high-temperature resistant butterfly valve for engines, comprising a valve body, a main sealing valve seat, and a fixed shell installed through the upper surface of the middle part of the valve body; a valve stem is rotatably installed inside the fixed shell, and a heat sink is provided on the outside of the fixed shell; the top of the fixed shell is connected to a power mechanism by screws; a buffer protection component is installed on the left side of the valve plate and inside the valve plate, and the impact force of the material in the valve body on the valve plate can be reduced and offset by the buffer protection component, so as to protect the valve plate. In the high-temperature resistant butterfly valve for engines, the coolant circulates in the spiral tube to cool the valve plate, so that the valve plate can withstand high temperature operation well, and the gas in the connecting airbag will exert a leftward force on the pressure plate and the rotating shaft, which can then offset each other and reduce a part of the force, thereby reducing the impact force of the material in the butterfly valve on the valve plate.

Description

Technical Field

[0001] The invention relates to the technical field of butterfly valves for engines, in particular to a high-temperature resistant butterfly valve for engines. Background Art

[0002] Generally, the deflated engine brake in the market needs to be used with a butterfly valve for exhaust work. The material conveyed by the butterfly valve is sometimes at a high temperature. Therefore, the butterfly valve for the engine can be made resistant to high temperatures by changing the material of the valve body and valve stem, as well as the material of the sealing ring. However, the high-temperature resistant butterfly valve for the engine on the market still has some problems when used, such as:

[0003] 1. The patent name disclosed in the prior art with the announcement number "CN108843797A" is "A high-temperature butterfly valve for sequential supercharged engines". The sealing ring is a plane annular ring with a thickness greater than or equal to the thickness of the valve plate. Because of its elasticity, it can ensure the formation of an effective plane seal. The center of the annular inner wall is provided with an annular groove that matches the cylindrical boss of the valve plate, and the boss of the valve plate is completely covered, so that the sealing between the valve plate and the valve seat is achieved through the sealing ring; the material is vulcanized rubber, which can withstand a high temperature of about 300 degrees;

[0004] The high temperature butterfly valve mentioned above only sets the material of the sealing ring to vulcanized rubber, so that the sealing ring can withstand a high temperature of about 300 degrees. However, the higher temperature will damage the valve plate, making the valve plate unable to withstand high temperature, thereby affecting the service life of the entire butterfly valve.

[0005] 2. The patent name disclosed in the prior art with the announcement number "CN103615326A" is "An exhaust butterfly valve for automobile auxiliary brake", and the valve plate is in an annular stepped shape on one side facing the air inlet chamber, and the sealing ring is sleeved on the upper step and is tightly pressed by the pressure ring sleeved on the lower step; the sealing ring is sleeved on the upper step, and the pressure ring is sleeved on the lower step and forms a surface contact with the sealing ring, and the clamping bolt fixes the pressure ring and the sealing ring to the outer edge of the valve plate through the fixing holes on the pressure ring and the valve plate; to further prevent leakage, a layer of gasket must be sleeved before the sealing ring is sleeved on the upper step; the overall width of the sealing ring is slightly larger than the bottom width of the upper step, and in the process of gradually tightening the clamping bolt, the pressure ring can produce lateral extrusion on the sealing ring to cause it to undergo elastic deformation and generate pre-tightening force;

[0006] When the valve plate in the butterfly valve in the above-mentioned prior art is closed for use, the valve plate seals the inside of the valve body to prevent the flow of materials. However, the transported materials are blocked on one side of the valve plate, which will cause the materials to exert a certain impact force on the side of the valve plate. If this continues for a long time, the valve plate will be damaged by a large impact force, thereby affecting the service life of the entire butterfly valve. Summary of the invention

[0007] The purpose of the present invention is to provide a high-temperature resistant butterfly valve for engines to solve the problem raised by the above-mentioned background technology that when the valve plate in the butterfly valve on the current market is closed for use, the valve plate contacts the main sealing valve seat to form a main seal, thereby sealing the inside of the valve body and preventing the flow of materials. However, the material being transported is blocked on one side of the valve plate, which will cause the material to generate a certain impact force on the side of the valve plate. If this continues for a long time, the valve plate will be damaged by a large impact force, thereby affecting the service life of the entire butterfly valve.

[0008] To achieve the above object, the present invention provides the following technical solution: a high temperature resistant butterfly valve for an engine, comprising a valve body, a main sealing valve seat assembly, and a fixed housing installed through the upper surface of the middle portion of the valve body;

[0009] A valve stem is rotatably mounted inside the fixed shell, and a heat sink is provided outside the fixed shell;

[0010] The upper portion of the fixed housing is connected to the power mechanism via screws;

[0011] The valve plate and the main sealing valve seat assembly are placed in close contact with the interior of the valve body;

[0012] The main sealing valve seat assembly is installed in the valve body and on the right side of the valve plate. It includes the main sealing valve seat, auxiliary high temperature resistant spring, spring pad and high temperature resistant triangular sealing ring. When the valve is closed, the main sealing valve seat and the valve plate are in contact with each other under the action of the auxiliary high temperature resistant spring to form the main valve seal, which blocks the flow of most of the media in the pipeline.

[0013] A buffer protection component is installed on the left side of the valve plate and inside the valve plate. The buffer protection component can reduce and offset the impact force of the material in the valve body on the valve plate, so as to protect the valve plate;

[0014] A high temperature resistant component is installed inside the right side of the valve plate. The high temperature resistant component is used to cool the valve plate so that the valve plate is well resistant to high temperatures.

[0015] Preferably, the buffer protection assembly includes a rotating shaft rod that passes through and is slidably connected to the inside of the left side of the valve plate, and a pressure plate connected to the bearing at the right end of the rotating shaft rod. It also includes a connecting air bag installed inside the valve plate. An air collecting hood is fixedly installed on the left end of the rotating shaft rod, and a connecting air bag is arranged on the right side of the pressure plate. The buffer protection assembly can further improve the sealing between the outer side of the valve plate and the valve body.

[0016] Through the arrangement of the above structure, the groove can be used to place the rotating shaft rod, so that the rotating shaft rod can drive the pressure plate to squeeze the connecting airbag in the later stage.

[0017] Preferably, an installation groove with a circular ring-shaped structure is provided on the outer side surface of the valve plate, and a groove is provided in the middle position of the left side surface of the valve plate, and a connecting airbag is installed inside the right side of the groove, and a rotating shaft rod is slidably connected inside the groove, and a sealing airbag with a circular ring-shaped structure is embedded and installed on the outer side surface of the valve plate, and the lower end seal of the valve stem passes through the upper surface of the sealing airbag and is fixedly connected and installed with a spline between the valve plate, and a high-temperature resistant bearing is provided on the outside of the valve stem to improve the ease of valve operation, and a limit plate with a circular ring-shaped structure is embedded and installed inside the left side surface of the groove, and a rotating shaft rod is slidably connected inside the limit plate, and the inner diameter of the limit plate is smaller than the diameter of the groove.

[0018] Through the arrangement of the above structure, the inner diameter of the limiting plate is smaller than the diameter of the groove, so that the limiting plate can well limit the pressing plate and prevent the pressing plate from slipping out of the groove.

[0019] Preferably, six connecting tubes are installed at equal angles on the inner side wall of the sealing airbag, and the other ends of the connecting tubes are connected to the connecting airbag.

[0020] By setting the above structure, the gas in the connecting airbag can enter the sealing airbag through the connecting pipe;

[0021] Preferably, the space in the connecting airbag is connected to the space in the sealing airbag through a connecting tube.

[0022] The above-mentioned structure facilitates the gas in the connecting airbag and the gas in the sealing airbag to flow to each other.

[0023] Preferably, four damping rods are installed with equiangular screws on the right side of the limit plate, and the right end of the damping rod is slidably connected with a pressure plate, and the left side of the pressure plate is connected to the right side of the limit plate through a return spring.

[0024] The above-mentioned structure makes it easier for the pressure plate to pull the return spring, so that the return spring can reduce a certain impact force.

[0025] Preferably, the diameter of the pressure plate is equal to the outer diameter of the limiting plate, and the pressure plate forms a sliding structure with the valve plate by rotating the shaft.

[0026] Through the arrangement of the above structure, the diameter of the pressing plate is equal to the outer diameter of the limiting plate, which makes it easier for the limiting plate to block and limit the pressing plate.

[0027] Preferably, a circle of toggle plates are installed at equal angles on the outer side of the gas collecting hood, and the gas collecting hood is arranged in a bowl-shaped structure, and the gas collecting hood and the valve plate are cocentric.

[0028] Through the arrangement of the above structure, the bowl-shaped gas collecting hood can gather a certain amount of material, so that the material can push the gas collecting hood to the right.

[0029] Preferably, a sliding groove with a "T"-shaped structure is provided in the upper and lower interiors of the rotating shaft, and a connecting spring is installed inside the sliding groove, and the end of the cleaning brush rod close to the rotating shaft is arranged in a "T"-shaped structure, and one end of the cleaning brush rod is engaged and slidably connected with the sliding groove, one side surface of the cleaning brush rod is arranged to fit the left side surface of the valve plate, and the cleaning brush rod is connected to one end of the connecting spring, and the cleaning brush rod can be moved in the opposite direction and reset by the stored force of the connecting spring.

[0030] Through the arrangement of the above structure, the cleaning brush rod slides stably in the sliding groove, so that the cleaning brush rod will not be separated from the sliding groove, which is convenient for adjusting the position of the cleaning brush rod, and the cleaning brush rod will not affect the sliding of the rotating shaft rod;

[0031] Preferably, the high temperature resistant component includes an adjusting shaft rod which is snap-fitted and slidably connected to the inside of the right side of the rotating shaft rod, the right end of the adjusting shaft rod passes through the center of the pressure plate, and the right end of the adjusting shaft rod is connected to the internal through-bearing of the valve plate, and a turbine blade is installed on the outside of the right end of the adjusting shaft rod, the high temperature resistant component also includes a spiral tube and a fixed tube installed on the inside of the right side of the valve plate, and the upper outside of the fixed tube is connected with the spiral tube, and the other end of the spiral tube is connected to the liquid storage cooling box through a connecting hose, and an inlet pipe is installed at the bottom of the fixed tube, and the lower end of the inlet pipe is also connected to the liquid storage cooling box through a connecting hose, and the lower end of the inlet pipe and the lower end of the spiral tube both pass through the valve stem under the valve plate, the interior of the fixed tube is provided with turbine blades, and the liquid storage cooling box is provided below the valve body.

[0032] Through the arrangement of the above structure, the rotating shaft can drive the adjusting shaft to rotate without using an additional power source, and the adjusting shaft can drive the turbine blades to rotate, thereby saving energy.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows: the coolant circulates in the spiral tube of the high-temperature resistant engine butterfly valve to cool the valve plate, so that the valve plate can work well in high temperature resistance, and a part of the material transported in the butterfly valve generates a certain impact force on the air collecting cover, and at the same time, the air collecting cover is impacted to drive the rotating shaft to move rightward to squeeze the connecting air bag, thereby reducing the impact force of the material in the butterfly valve on the valve plate and increasing the service life of the valve plate. The specific contents are as follows:

[0034] An adjusting shaft and a turbine blade are installed. When the adjusting shaft is rotated to drive the adjusting shaft to rotate, the adjusting shaft can drive the turbine blade to rotate, thereby causing the turbine blade to generate a certain suction force, and the coolant in the liquid storage cooling box enters the fixed pipe and the spiral pipe through the inlet pipe to flow, and then the coolant in the spiral pipe flows into the liquid storage cooling box for cooling and heat dissipation, so that the coolant circulates in the spiral pipe to cool the valve plate, so that the valve plate can be well resistant to high temperature operation, and then the entire engine butterfly valve can be well resistant to high temperature, thereby increasing the service life of the entire engine butterfly valve;

[0035] A gas collecting hood with a bowl-shaped structure is provided, so that a part of the material transported in the butterfly valve generates a certain impact force on the gas collecting hood, thereby reducing the impact force of the material on the valve plate. At the same time, the gas collecting hood is impacted to drive the rotating shaft to move to the right to squeeze the connecting air bag, and the gas in the connecting air bag will exert a leftward force on the pressure plate and the rotating shaft, which can then offset each other and reduce a part of the force. At the same time, the reset spring is stretched, so that the reset spring can absorb a part of the impact force, thereby reducing the impact force of the material in the butterfly valve on the valve plate, and then the valve plate can be protected, thereby increasing the service life of the valve plate;

[0036] A connecting pipe is installed. When the pressure plate squeezes the connecting valve plate, part of the gas in the connecting airbag enters the sealing airbag through the connecting pipe, so that the volume of the sealing airbag expands well and fits tightly and stably with the inner wall of the valve body, thereby further improving the sealing performance of the valve plate and the valve body. The sealing airbag is made of silicone rubber, which is very resistant to high temperatures.

[0037] A toggle plate is installed. When the valve plate is rotated and opened, the material conveyed in the valve body will generate a certain impact force on the toggle plate, and then the toggle plate drives the air collecting hood to rotate, so that the air collecting hood and the rotating shaft rod rotate together, and then the rotating shaft rod drives the cleaning brush rod to rotate, so that the cleaning brush rod can brush away the impurities on one side of the valve plate to prevent the impurities from sticking to the valve plate, thereby facilitating the use of the valve plate. At the same time, through the rotation of the toggle plate, the toggle plate generates a certain amount of air like a fan blade, which can speed up the flow efficiency of the material in the valve body and improve the conveying efficiency of the valve body. Therefore, the residence time of the high-temperature material in the valve body is shortened, and the entire engine butterfly valve can be used with good high temperature resistance;

[0038] A sliding groove with a "T"-shaped structure is provided, so that a cleaning brush rod with a "T"-shaped structure at one end can slide in the sliding groove, thereby making it possible to adjust the position of the cleaning brush rod well, and the cleaning brush rod will not affect the rightward movement of the rotating shaft rod;

[0039] By setting a heat sink on the fixed housing, it can prevent the damage of the power mechanism caused by the high temperature heat conduction of the engine;

[0040] The valve stem and valve plate are connected by splines to improve the transmission reliability under high temperature, and the high temperature resistant bearing bush is provided on the outside of the valve stem to improve the convenience of valve operation.

[0041] When the valve is closed, the main sealing valve seat and the valve plate, under the action of the auxiliary high-temperature resistant spring, contact each other to form the main seal of the valve, blocking the flow of most of the media in the pipeline and increasing the service life of the valve at high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0043] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0044] Figure 3 This is a schematic diagram of the three-dimensional structure of the valve plate of the present invention;

[0045] Figure 4 This is a schematic diagram of the main cross-sectional structure of the valve plate of the present invention;

[0046] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0047] Figure 6 It is a schematic diagram of the side cross-sectional structure of the turbine blade of the present invention;

[0048] Figure 7 This is a schematic diagram of the explosion of the valve plate and the sealing airbag being separated from each other in the present invention;

[0049] Figure 8 This is a schematic diagram of the connection structure between the rotating shaft and the pressing plate of the present invention;

[0050] Fig. 9 This is a schematic diagram of the connection structure between the pressure plate and the damping rod of the present invention;

[0051] Fig.10 It is a schematic diagram of the main cross-sectional structure of the connection between the rotating shaft rod and the cleaning brush rod of the present invention;

[0052] Fig.11 It is a schematic structural diagram of the main sealing valve seat assembly of the present invention.

[0053] In the figure: 1. valve body; 2. fixed shell; 201. heat sink; 3. power mechanism; 4. inlet connecting flange; 5. outlet connecting flange; 6. valve stem; 601. high temperature resistant bearing; 602. spline; 7. valve plate; 71. mounting groove; 72. groove; 8. sealing airbag; 81. connecting pipe; 82. connecting airbag; 9. air collecting cover; 91. toggle plate; 10. rotating shaft; 101. cleaning brush rod; 102. sliding groove; 103. connecting spring; 11. limit plate; 12. reset spring; 13. pressure plate; 14. damping rod; 15. turbine blade; 16. adjusting shaft; 17. spiral tube; 18. liquid storage cooling box; 19. inlet pipe; 20. fixed pipe; 21. main sealing valve seat; 211. auxiliary high temperature resistant spring; 212. spring pad; 213. high temperature resistant triangular sealing ring. DETAILED DESCRIPTION

[0054] 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.

[0055] See also Figure 1-Figure 11 , the present invention provides the following technical solutions: Embodiment 1:

[0056] A high temperature resistant butterfly valve for an engine, comprising a valve body 1 and a main sealing valve seat assembly, and a fixed housing 2 which is installed through the upper surface of the middle part of the valve body 1; a valve stem 6 is rotatably installed inside the fixed housing 2, and a heat sink 201 is provided outside the fixed housing 2; an inlet connection flange 4 is fixed on the left side of the valve body 1, and an outlet connection flange 5 is connected to the right side of the valve body 1;

[0057] Refer to the attached Figure 1-2As shown, the entire high-temperature resistant engine butterfly valve is moved into the working area. After reaching the working area, the entire high-temperature resistant engine butterfly valve can be used well. The inlet connection flange 4 and the outlet connection flange 5 are respectively connected to the external pipeline. The upper part of the fixed shell 2 is connected to the power mechanism 3 by screws. A heat sink 201 is arranged outside the fixed shell 2, and the power mechanism 3 is used to control the rotation of the upper end of the valve stem 6. When the entire high-temperature resistant engine butterfly valve controls the valve stem 6 to rotate through the power mechanism 3, the valve stem 6 is connected through the spline 602 and drives the valve plate 7 to rotate. A high-temperature resistant bearing 601 is arranged outside the valve stem 6, so that the outer side surface of the valve plate 7 is tightly fitted with the inner side wall of the valve body 1, and the main sealing valve seat 21 is also in contact with the sealing surface of the valve plate 7 to form two seals. At this time, the valve plate 7 makes the butterfly valve in a closed state. At this time, the material is inside the left side of the valve body 1. Through the obstruction of the valve plate 7, the material will not enter the right side of the valve body 1.

[0058] See attached Figure 1-5As shown, at this time, the material will have a certain impact force on the left side of the valve plate 7, and impurities on the material may also adhere to the left side of the valve plate 7. At this time, a part of the material will have a certain impact force on the gas collecting hood 9 with a bowl-shaped structure. The left end of the rotating shaft 10 is fixedly installed with the gas collecting hood 9, so that the gas collecting hood 9 drives the rotating shaft 10 to move to the right together. At this time, the rotating shaft 10 drives the pressure plate 13 to move to the right. The diameter of the pressure plate 13 is equal to the outer diameter of the limit plate 11, and the pressure plate 13 forms a sliding structure with the valve plate 7 through the rotating shaft 10. The right side of the limit plate 11 Four damping rods 14 are installed with equiangular screws, and the right end of the damping rod 14 penetrates and is slidably connected with a pressure plate 13, and the left side of the pressure plate 13 is connected to the right side of the limit plate 11 through a return spring 12. At this time, the pressure plate 13 slides to the right on the outside of the damping rod 14 and pulls the return spring 12 to the right. When the pressure plate 13 moves to the right, it squeezes the connecting airbag 82 in the valve plate 7 to the right, and the space in the connecting airbag 82 is connected to the space in the sealing airbag 8 through the connecting pipe 81. The valve plate 7 is placed in a close relationship with the inside of the valve body 1, and the outer side of the valve plate 7 A sealing airbag 8 with a circular ring-shaped structure is embedded in the side; the lower end of the valve stem 6 is sealed and penetrates the upper surface of the sealing airbag 8 and is fixedly installed with the valve plate 7, and six connecting tubes 81 are installed at equal angles on the inner wall of the sealing airbag 8, and the other end of the connecting tube 81 is connected to the connecting airbag 82. At this time, part of the gas in the connecting airbag 82 will apply a leftward thrust to the pressure plate 13. Similarly, the connecting airbag 82 will apply a leftward thrust to the rotating shaft 10 and the gas collecting cover 9. A circle of toggle plates 91 are installed at equal angles on the outside of the gas collecting cover 9, and the gas collecting cover 9 has a bowl-shaped structure. The air collecting cover 9 is arranged to be co-centered with the valve plate 7, so the impact force exerted to the right by the external materials on the rotating shaft 10 and the air collecting cover 9 is offset and reduced, and at the same time, the return spring 12 is stretched, so that the return spring 12 can absorb a part of the impact force, thereby reducing the impact force of the materials on the valve plate 7, avoiding damage to the valve plate 7, and prolonging the service life of the entire high-temperature resistant engine butterfly valve. By setting the material of the sealing airbag 8 to silicone rubber, the sealing airbag 8 can be well resistant to high temperatures, so that the entire engine butterfly valve is well resistant to high temperatures when in use;

[0059] A limiting plate 11 with a circular ring structure is embedded and installed inside the left side of the groove 72, and a rotating shaft 10 is slidably connected to the inside of the limiting plate 11, and the inner diameter of the limiting plate 11 is smaller than the diameter of the groove 72; a mounting groove 71 with a circular ring structure is opened on the outer side of the valve plate 7, and a groove 72 is opened in the middle of the left side of the valve plate 7, and a connecting airbag 82 is installed inside the right side of the groove 72, and the rotating shaft 10 is slidably connected inside the groove 72;

[0060] At the same time, when the pressure plate 13 is squeezing the connecting airbag 82, the right end of the rotating shaft 10 is connected to the bearing of the pressure plate 13, and the connecting airbag 82 is arranged on the right side of the pressure plate 13, the connecting airbag 82 is installed inside the valve plate 7, and the rotating shaft 10 is slidably connected to the left side of the valve plate 7, and part of the gas in the connecting airbag 82 can enter the sealing airbag 8 through the connecting pipe 81, thereby expanding the volume of the sealing airbag 8, and further making the outer side of the sealing airbag 8 and the inner side wall of the valve body 1 stably and tightly fit, thereby improving the sealing between the valve body 1 and the valve plate 7;

[0061] A high temperature resistant component is installed inside the right side of the valve plate 7. The high temperature resistant component is used to cool the valve plate 7 so that the valve plate 7 is well resistant to high temperatures.

[0062] The high temperature resistant component includes an adjusting shaft 16 which is slidably connected to the right side of the rotating shaft 10, the right end of the adjusting shaft 16 passes through the center of the pressure plate 13, and the right end of the adjusting shaft 16 is connected to the bearing passing through the inside of the valve plate 7, and a turbine blade 15 is installed on the outside of the right end of the adjusting shaft 16, and the high temperature resistant component also includes a spiral tube 17 and a fixed tube 20 installed on the right side of the valve plate 7, and the upper outside of the fixed tube 20 is connected with the spiral tube 17, and the other end of the spiral tube 17 is connected to the liquid storage cooling box 18 through a connecting hose, and an inlet pipe 19 is installed at the bottom of the fixed tube 20, and the lower end of the inlet pipe 19 is also connected to the liquid storage cooling box 18 through a connecting hose, and the lower end of the inlet pipe 19 and the lower end of the spiral tube 17 are both passed through the valve stem 6 below the valve plate 7, and the interior of the fixed tube 20 is provided with a turbine blade 15, and the liquid storage cooling box 18 is provided below the valve body 1;

[0063] Refer to the attached Figure 4-6As shown, when the valve plate 7 needs to be rotated open to allow the material in the valve body 1 to flow and be transported, the power mechanism 3 can control the valve stem 6 to drive the valve plate 7 to rotate, so that the outer side of the valve plate 7 does not fit and contact the inner wall of the valve body 1. At this time, the material in the valve body 1 will generate a certain thrust on the toggle plate 91 when flowing to the right, and then the toggle plate 91 drives the air collecting hood 9 to rotate. When the air collecting hood 9 rotates, it drives the rotating shaft 10 to rotate together. When the rotating shaft 10 rotates, the card slot inside the rotating shaft 10 and the card block on the outer side of the left end of the adjusting shaft 16 are engaged and slidably connected, which will make the rotating shaft 10 drive the adjusting shaft 16 to rotate together, and the adjusting shaft 16 drives the turbine blades 15 to rotate together. At this time, the turbine blades 15 will generate a certain suction force to cool the liquid storage cooling box. The coolant in 18 is sucked into the fixed pipe 20 through the inlet pipe 19, and then the coolant in the fixed pipe 20 flows into the spiral pipe 17. At this time, the coolant in the spiral pipe 17 can cool the valve plate 7 well. Then the turbine blades 15 continue to rotate, which will make the coolant in the spiral pipe 17 flow into the liquid storage cooling box 18 through the connecting hose. Then the coolant in the liquid storage cooling box 18 enters the fixed pipe 20 again through the connecting hose and the inlet pipe 19 after cooling. Then the coolant in the fixed pipe 20 flows into the spiral pipe 17 again, and this is repeated, so that the coolant circulates in the spiral pipe 17 to cool the valve plate 7. Therefore, the entire engine butterfly valve can be well resistant to high temperature operations, thereby improving the service life of the entire engine butterfly valve.

[0064] Refer to the attached Fig.11 As shown, the main sealing valve seat assembly, including the main sealing valve seat 21, the auxiliary high temperature resistant spring 211, the spring pad 212, and the high temperature resistant triangular sealing ring 213, is installed in the valve body 1 and is located on the right side of the valve plate 7. When the valve is closed, the sealing surfaces of the main sealing valve seat 21 and the valve plate 7 contact each other to form a seal. When the valve is closed, the main sealing valve seat 21 and the valve plate 7 contact each other under the action of the auxiliary high temperature resistant spring 211 to form the main seal of the valve, thereby blocking the flow of most of the medium in the pipeline and improving the service life of the valve at high temperatures. Embodiment 2:

[0065] Compared with Example 1, this application refers to the attached Figure 7 and attached Fig.10As shown, when the rotating shaft rod 10 moves to the right, the valve plate 7 will push the cleaning brush rod 101 with a "T"-shaped structure at one end to slide to the left in the sliding groove 102 with a "T"-shaped structure. Therefore, the position of the cleaning brush rod 101 can be adjusted so that the cleaning brush rod 101 will not affect the rightward movement of the rotating shaft rod 10, ensuring that the cleaning brush rod 101 is always in contact with the left side of the valve plate 7. When the cleaning brush rod 101 moves, it will squeeze the connecting spring 103. One side of the cleaning brush rod 101 is in contact with the left side of the valve plate 7, and the cleaning brush rod 101 and the connecting spring 103 are connected. 3, a sliding groove 102 in a "T"-shaped structure is provided in the upper and lower interiors of the rotating shaft 10, and a connecting spring 103 is installed in the sliding groove 102, and the end of the cleaning brush rod 101 close to the rotating shaft 10 is arranged in a "T"-shaped structure, and one end of the cleaning brush rod 101 is engaged and slidably connected with the sliding groove 102, and the cleaning brush rod 101 can be reversely moved and reset by the stored force of the connecting spring 103, so that the connecting spring 103 accumulates force, which is convenient for the cleaning brush rod 101 to be automatically driven to reset by the stored force of the connecting spring 103 in the later stage;

[0066] When there is no material in the butterfly valve of the present application, the pressure plate 13 and the rotating shaft 10 will be automatically reset through the stored force of the reset spring 12. When the valve plate 7 needs to be rotated open to allow the material in the valve body 1 to flow and be transported, the power mechanism 3 can control the valve stem 6 to drive the valve plate 7 to rotate, so that the outer side of the valve plate 7 does not fit the inner wall of the valve body 1. At this time, the material in the valve body 1 will generate a certain thrust on the toggle plate 91 when flowing to the right, and then the toggle plate 91 will drive the air collecting hood 9 to rotate, and the air collecting hood 9 will drive the rotating shaft when rotating. 10 rotates together, so the rotating shaft 10 drives the cleaning brush rod 101 to rotate, so that the cleaning brush rod 101 can effectively brush away the impurities adhered to the surface of the valve plate 7, so that the valve plate 7 can be used well. At the same time, when the toggle plate 91 is rotating, the toggle plate 91 will generate a certain amount of air like a fan blade, so that the flow of materials in the valve body 1 can be accelerated, the conveying efficiency of the valve body 1 is improved, and then the residence time of high-temperature materials in the valve body 1 is shortened, thereby making the entire engine butterfly valve very resistant to high temperature use.

[0067] Working principle of this embodiment: when the high temperature resistant engine butterfly valve is used, firstly, the material will not enter the right side of the valve body 1 through the blocking of the valve plate 7; at this time, a part of the material will exert a certain impact force on the gas collecting cover 9 with a bowl-shaped structure, so that the gas collecting cover 9 drives the rotating shaft 10 to move to the right together, and at this time, a part of the gas in the connecting airbag 82 will exert a leftward thrust on the pressure plate 13, thereby reducing the impact force of the material on the valve plate 7;

[0068] A portion of the gas in the connecting airbag 82 can enter the sealing airbag 8 through the connecting pipe 81, thereby improving the sealing between the valve body 1 and the valve plate 7, thereby completing a series of tasks.

[0069] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0070] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] 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. A high temperature resistant butterfly valve for an engine, comprising a valve body (1), a main sealing valve seat (21), and a fixed housing (2) installed through the middle upper surface of the valve body (1); A valve stem (6) is rotatably mounted inside the fixed housing (2); It is characterized in that Also includes: The upper portion of the fixed housing (2) is connected to the power mechanism (3) via screws, and the exterior of the fixed housing (2) is provided with a heat sink (201); A valve plate (7) is placed in close contact with the interior of the valve body (1), and a main sealing valve seat assembly is provided on the right side of the valve plate (7); a high temperature resistant component, which is mounted inside the right side surface of the valve plate (7), and the high temperature resistant component is used to cool the valve plate (7) so that the valve plate (7) is resistant to high temperatures; a buffer protection component, which is installed on the left side of the valve plate (7) and inside the valve plate (7), and the buffer protection component can reduce and offset the impact force of the material in the valve body (1) on the valve plate (7), so as to protect the valve plate (7); The buffer protection component comprises a rotating shaft (10) penetrating and slidably connected to the left interior of the valve plate (7), and a pressure plate (13) connected to a bearing at the right end of the rotating shaft (10), and also comprises a connecting air bag (82) installed inside the valve plate (7), an air collecting cover (9) is fixedly installed at the left end of the rotating shaft (10), and a connecting air bag (82) is arranged on the right side of the pressure plate (13), and the buffer protection component can further improve the sealing performance between the outer side surface of the valve plate (7) and the valve body (1); The outer side surface of the valve plate (7) is provided with a mounting groove (71) with a circular ring-shaped structure, and a groove (72) is provided at the middle position of the left side surface of the valve plate (7), and a connecting airbag (82) is installed inside the right side of the groove (72), and a rotating shaft (10) is slidably connected inside the groove (72), and a sealing airbag (8) with a circular ring-shaped structure is embedded and installed on the outer side surface of the valve plate (7), the lower end of the valve stem (6) seals and penetrates the upper surface of the sealing airbag (8) and is fixedly connected and installed with the valve plate (7) via a spline (602), and a limiting plate (11) with a circular ring-shaped structure is embedded and installed inside the left side surface of the groove (72), and the rotating shaft (10) is slidably connected inside the limiting plate (11), and the inner diameter of the limiting plate (11) is smaller than the diameter of the groove (72); Six connecting tubes (81) are installed at equal angles on the inner side wall of the sealing airbag (8), and the other ends of the connecting tubes (81) are connected to the connecting airbag (82), and the space in the connecting airbag (82) is connected to the space in the sealing airbag (8) through the connecting tubes (81); A circle of toggle plates (91) are installed at equal angles on the outside of the gas collecting hood (9), the gas collecting hood (9) is arranged in a bowl-shaped structure, and the gas collecting hood (9) and the valve plate (7) are co-centered; The upper and lower interiors of the rotating shaft (10) are both provided with sliding grooves (102) in a "T"-shaped structure, and a connecting spring (103) is installed inside the sliding groove (102), and one end of the cleaning brush rod (101) close to the rotating shaft (10) is arranged in a "T"-shaped structure, and one end of the cleaning brush rod (101) is engaged and slidably connected with the sliding groove (102); One side surface of the cleaning brush rod (101) is arranged in close contact with the left side surface of the valve plate (7), and the cleaning brush rod (101) is connected to one end of a connecting spring (103), and the cleaning brush rod (101) can be moved in the reverse direction and reset by the stored force of the connecting spring (103).

2. A high temperature resistant engine butterfly valve according to claim 1, characterized in that: An inlet connection flange (4) is fixed to the left side of the valve body (1), and an outlet connection flange (5) is connected to the right side of the valve body (1). The power mechanism (3) is used to control the rotation of the upper end of the valve stem (6). A high-temperature resistant bearing bush (601) is provided on the outside of the valve stem (6).

3. A high temperature resistant engine butterfly valve according to claim 1, characterized in that: Four damping rods (14) are installed on the right side of the limit plate (11) by screws of equal angles, and the right end of the damping rod (14) penetrates and is slidably connected to a pressure plate (13), and the left side of the pressure plate (13) is connected to the right side of the limit plate (11) via a return spring (12).

4. A high temperature resistant engine butterfly valve according to claim 3, characterized in that: The diameter of the pressure plate (13) is equal to the outer diameter of the limit plate (11), and the pressure plate (13) forms a sliding structure with the valve plate (7) by rotating the shaft (10).

5. A high temperature resistant engine butterfly valve according to claim 1, characterized in that: The high temperature resistant component comprises an adjusting shaft (16) which is slidably connected to the right side of the rotating shaft (10), the right end of the adjusting shaft (16) passes through the center of the pressure plate (13), and the right end of the adjusting shaft (16) is connected to the internal through-bearing of the valve plate (7), and a turbine blade (15) is installed on the outer side of the right end of the adjusting shaft (16). The high temperature resistant component also comprises a spiral tube (17) and a fixed tube (20) which are installed on the right side of the valve plate (7), and the upper outer side of the fixed tube (20) is connected to the spiral tube (17). , and the other end of the spiral tube (17) is connected to the liquid storage cooling box (18) through a connecting hose, and an inlet pipe (19) is installed at the bottom of the fixed tube (20), and the lower end of the inlet pipe (19) is also connected to the liquid storage cooling box (18) through a connecting hose, and the lower end of the inlet pipe (19) and the lower end of the spiral tube (17) are both inserted into the valve stem (6) below the valve plate (7), and the interior of the fixed tube (20) is provided with a turbine blade (15), and the liquid storage cooling box (18) is arranged below the valve body (1).

6. A high temperature resistant engine butterfly valve according to claim 1, characterized in that: The main sealing valve seat assembly comprises a main sealing valve seat (21), an auxiliary high temperature resistant spring (211), a spring washer (212), and a high temperature resistant triangular sealing ring (213), which is installed in the valve body (1) and is located on the right side of the valve plate (7). When the valve is closed, the sealing surfaces of the main sealing valve seat (21) and the valve plate (7) contact each other to form a seal.

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