High-temperature-resistant butterfly valve for engine

Abstract

Disclosed is a high-temperature-resistant butterfly valve for an engine. The high-temperature-resistant butterfly valve for an engine comprises: a valve body (1), a main sealing valve seat (21), and a fixed housing (2) penetrating an upper surface of the middle part of the valve body (1), wherein a valve rod (6) is rotatably mounted inside the fixed housing (2), heat dissipation fins (201) are provided on the outside of the fixed housing (2), and the upper portion of the fixed housing (2) is connected to a power mechanism (3) by means of screws; and a buffer protection assembly, which is mounted on the left side surface of a valve plate (7) and in the interior of the valve plate. Impact force of materials in the valve body (1) on the valve plate (7) can be reduced and counteracted by means of the buffer protection assembly, thereby facilitating protection for the valve plate (7). In the high-temperature-resistant butterfly valve for an engine, a cooling liquid circularly flows in a spiral pipe so as to cool the valve plate, such that the valve plate can operate well in a manner of resisting high-temperature; and air in a connecting air-pouch can apply a leftward force to a pressing plate and a rotating shaft rod, and then the leftward force and the impact force can counteract each other so as to reduce a part of the impact force, thereby reducing the impact force of the materials in the butterfly valve on the valve plate.

Description

A high temperature resistant butterfly valve for engines Technical Field

[0001] The present 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 current market needs to be used in conjunction with a butterfly valve for exhaust work. The material conveyed by the butterfly valve is sometimes at a high temperature. Therefore, the market currently changes the material of the valve body and valve stem, as well as the material of the sealing ring to make the engine butterfly valve more resistant to high temperature. However, the high-temperature resistant engine butterfly valves on the market still have some problems when used, such as:

[0003] 1. The prior art patent, published under publication number CN108843797A, is titled "A High-Temperature Butterfly Valve for Sequentially Supercharged Engines." The sealing ring is a planar annular ring with a thickness greater than or equal to that of the valve plate. Due to its elasticity, it ensures an effective planar seal. An annular groove is provided at the center of the annular inner wall, which mates with the cylindrical boss of the valve plate, completely enveloping the boss of the valve plate. This seal is achieved between the valve plate and the valve seat through the sealing ring. The ring is made of vulcanized rubber and can withstand temperatures of approximately 300°C.

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

[0005] 2. The patent disclosed in the prior art with the publication number "CN103615326A" is titled "An Exhaust Butterfly Valve for Auxiliary Braking of Automobiles." The valve disc has a stepped annular shape on the side facing the air inlet chamber. 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 surface contact with the sealing ring. The compression bolts pass through the fixing holes on the pressure ring and the valve disc to fix the pressure ring and the sealing ring to the outer edge of the valve disc. To further prevent leakage, a layer of gasket must be installed 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. In the process of gradually tightening the compression bolts, the pressure ring can exert lateral pressure on the sealing ring, causing it to elastically deform and generate a preload 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 interior of the valve body to prevent the flow of material. However, the material being transported is blocked on one side of the valve plate, which will cause the material 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.

[0007] Summary of the Invention

[0008] The purpose of the present invention is to provide a high-temperature resistant butterfly valve for engines, so as to solve the problem raised in the above 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, sealing the inside of the valve body to prevent the flow of materials. However, the material transported in this way is blocked on one side of the valve plate, which will cause the material to produce 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.

[0009] To achieve the above-mentioned 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;

[0010] A valve stem is rotatably mounted inside the fixed shell, and a heat sink is provided outside the fixed shell;

[0011] The upper portion of the fixed housing is connected to the power mechanism via screws;

[0012] The valve plate and the main sealing valve seat assembly are placed in close contact with the interior of the valve body;

[0013] The main sealing seat assembly, installed within the valve body and to the right of the valve disc, consists of the main sealing seat, an auxiliary high-temperature spring, a spring washer, and a high-temperature triangular sealing ring. When the valve is closed, the auxiliary high-temperature spring acts on the main sealing seat and the valve disc, creating a contact surface that forms the main seal and blocks the flow of most media within the pipeline.

[0014] 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, thereby protecting the valve plate;

[0015] 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.

[0016] Preferably, the buffer protection assembly includes a rotating shaft that 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. It also includes a connecting airbag installed inside the valve plate. An air collecting cover is fixedly installed at the left end of the rotating shaft, and a connecting airbag is provided 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.

[0017] Through the arrangement of the above structure, the groove can be used to place the rotating shaft, so that the rotating shaft can drive the pressure plate to squeeze the connecting airbag in the later stage.

[0018] Preferably, the outer side surface of the valve plate is provided with a mounting groove with a circular ring-shaped structure, 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 the interior of the groove is slidably connected to a rotating shaft rod, 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 to the valve plate by a spline, and a high-temperature resistant bearing is provided on the outside of the valve stem to improve the ease of valve operation, and a limiting plate with a circular ring-shaped structure is embedded and installed inside the left side surface of the groove, and the interior of the limiting plate is slidably connected to a rotating shaft rod, and the inner diameter of the limiting plate is smaller than the diameter of the groove.

[0019] 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 sliding out of the groove.

[0020] 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.

[0021] By setting the above structure, the gas in the connecting airbag can enter the sealed airbag through the connecting pipe;

[0022] Preferably, the space in the connecting airbag is connected to the space in the sealing airbag through a connecting tube.

[0023] The above-mentioned structure facilitates the mutual flow of gas between the gas in the connecting airbag and the gas in the sealing airbag.

[0024] 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 to a pressure plate, and the left side of the pressure plate is connected to the right side of the limit plate through a reset spring.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Through the arrangement of the above structure, the bowl-shaped gas collecting hood can collect a certain amount of material, so that the material can push the gas collecting hood to the right.

[0030] 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 cleaning brush rod is arranged in a "T"-shaped structure at one end close to the rotating shaft, and one end of the cleaning brush rod is engaged and slidably connected with the sliding groove, one side of the cleaning brush rod is arranged to fit the left side 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.

[0031] By setting the above structure, the cleaning brush rod slides stably in the sliding groove, so that the cleaning brush rod will not separate from the sliding groove, which facilitates the adjustment of the position of the cleaning brush rod, and the cleaning brush rod will not affect the sliding of the rotating shaft;

[0032] Preferably, the high temperature resistant component includes an adjusting shaft that is snap-fitted and slidably connected to the inside of the right side of the rotating shaft, the right end of the adjusting shaft passes through the center of the pressure plate, and the right end of the adjusting shaft is connected to the bearing passing through the inside of the valve plate, and a turbine blade is installed on the outside of the right end of the adjusting shaft. 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 tank 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 tank 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, and the interior of the fixed tube is provided with turbine blades, and the liquid storage cooling tank is provided below the valve body.

[0033] 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.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows: in the high-temperature resistant engine butterfly valve, the coolant circulates in the spiral tube to cool the valve plate, so that the valve plate can well withstand high-temperature operation. A portion of the material transported in the butterfly valve generates a certain impact force on the air collecting cover. At the same time, the air collecting cover is impacted and drives 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:

[0035] (1) 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 improving the service life of the entire engine butterfly valve;

[0036] (2) 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 and drives the rotating shaft to move to the right to squeeze the connecting air bag. Moreover, the gas in the connecting air bag exerts a leftward force on the pressure plate and the rotating shaft, thereby making the forces offset each other and reducing a part. At the same time, the return spring is stretched, so that the return 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, thereby protecting the valve plate and increasing the service life of the valve plate;

[0037] (3) 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 between the valve plate and the valve body. The sealing airbag is made of silicone rubber, which is well resistant to high temperatures.

[0038] (4) A toggle plate is installed. When the valve plate is rotated to open, the material conveyed in the valve body will generate a certain impact force on the toggle plate, which then causes the toggle plate to drive the air collecting hood to rotate, thereby causing the air collecting hood and the rotating shaft to rotate together, and then causing the rotating shaft to drive the cleaning brush rod to rotate, so that the cleaning brush rod can brush off the impurities on one side of the valve plate to prevent the impurities from sticking to the valve plate, thereby facilitating the good 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 accelerate 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, which can make the entire engine butterfly valve well resistant to high temperature use;

[0039] (5) 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;

[0040] (6) 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;

[0041] (7) The valve stem and the valve plate are fixedly connected with a spline to improve the transmission reliability under high temperature, and the high temperature resistant bearing bushing on the outside of the valve stem also improves the ease of valve operation;

[0042] (8) 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 seal of the valve, which blocks the flow of most of the media in the pipeline and also increases the service life of the valve at high temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a schematic diagram of the three-dimensional structure of the present invention;

[0044] FIG2 is a schematic diagram of the main cross-sectional structure of the present invention;

[0045] FIG3 is a schematic diagram of the three-dimensional structure of the valve plate of the present invention;

[0046] FIG4 is a schematic diagram of the main cross-sectional structure of the valve plate of the present invention;

[0047] FIG5 is an enlarged structural diagram of point A in FIG5 of the present invention;

[0048] FIG6 is a schematic diagram of a side cross-sectional structure of a turbine blade according to the present invention;

[0049] FIG7 is a schematic diagram of the valve plate and the sealing airbag being separated and exploded according to the present invention;

[0050] FIG8 is a schematic diagram of the connection structure between the rotating shaft and the pressure plate of the present invention;

[0051] FIG9 is a schematic diagram of the connection structure between the pressure plate and the damping rod of the present invention;

[0052] FIG10 is a schematic diagram of the main cross-sectional structure of the connection between the rotating shaft and the cleaning brush rod of the present invention;

[0053] FIG11 is a schematic structural diagram of the main sealing valve seat assembly of the present invention.

[0054] 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. Return 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

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0056] Please refer to Figures 1 to 11. The present invention provides the following technical solutions:

[0057] Example 1:

[0058] A high-temperature resistant butterfly valve for an engine comprises a valve body 1 and a main sealing valve seat assembly, and a fixed housing 2 that is mounted through the upper surface of the middle portion of the valve body 1. A valve stem 6 is rotatably mounted within the fixed housing 2, and a heat sink 201 is provided on the exterior of the fixed housing 2. An inlet connecting flange 4 is fixed to the left side of the valve body 1, and an outlet connecting flange 5 is connected to the right side of the valve body 1.

[0059] 1-2, the entire high-temperature resistant engine butterfly valve is moved into the working area. After arriving at the working area, the entire high-temperature resistant engine butterfly valve can be used well. The inlet connecting flange 4 and the outlet connecting flange 5 are respectively connected to the external pipes. The top of the fixed shell 2 is connected to the power mechanism 3 by screws. A heat sink 201 is provided on the outside of 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 is controlled by the power mechanism 3 to rotate the valve stem 6, the valve stem 6 is connected through the spline 602 and drives the valve plate 7 to rotate. A high-temperature resistant bearing bush 601 is provided on the outside of the control valve stem 6, so that the outer side surface of the valve plate 7 is tightly fitted with the inner 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. The material will not enter the right side of the valve body 1 due to the obstruction of the valve plate 7.

[0060] Referring to Figures 1-5, at this time, the material will produce 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 produce 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 limit plate 1 1 is provided with four damping rods 14 with equal angle screws, and the right end of the damping rod 14 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 while pulling the return spring 12 to the right. When the pressure plate 13 moves to the right, it squeezes the connecting air bag 82 in the valve plate 7 to the right. The space in the connecting air bag 82 is connected to the space in the sealing air bag 8 through the connecting pipe 81. The valve plate 7 is placed in a close relationship with the interior of the valve body 1, and the valve The outer side of the plate 7 is embedded with a sealing airbag 8 with a circular ring-shaped structure; the lower end of the valve stem 6 is sealed and penetrates the upper surface of the sealing airbag 8 and is fixed to the valve plate 7. 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 left thrust to the pressure plate 13. Similarly, the connecting airbag 82 will apply a left 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 is bowl-shaped. The structure is set up, and the air collecting cover 9 and the valve plate 7 are cocentric, so the impact force exerted to the right by the external material on the rotating shaft 10 and the air collecting cover 9 is offset and reduced. At the same time, the return spring 12 is stretched, so that the return spring 12 can absorb part of the impact force, thereby reducing the impact force of the material on the valve plate 7, avoiding damage to the valve plate 7, and extending 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;

[0061] A ring-shaped limit plate 11 is embedded in the left side of the groove 72, and a rotating shaft 10 is slidably connected to the inside of the limit plate 11, and the inner diameter of the limit plate 11 is smaller than the diameter of the groove 72; a ring-shaped mounting groove 71 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 in the right side of the groove 72, and the rotating shaft 10 is slidably connected to the inside of the groove 72;

[0062] At the same time, when the pressure plate 13 squeezes 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 provided 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. A 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, further making the outer side of the sealing airbag 8 and the inner side wall of the valve body 1 stably and tightly fitted, thereby improving the sealing between the valve body 1 and the valve plate 7.

[0063] 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.

[0064] The high temperature resistant component includes an adjusting shaft 16 that is engaged and slidably connected to the inside of 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 inside the valve plate 7, and a turbine blade 15 is installed on the outside of the right end of the adjusting shaft 16, the high temperature resistant component also includes a spiral tube 17 and a fixed tube 20 installed on the inside of 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 tank 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 tank 18 through a connecting hose, and the lower end of the inlet pipe 19 and the lower end of the spiral tube 17 both pass through the valve stem 6 below the valve plate 7, the interior of the fixed tube 20 is provided with a turbine blade 15, and the liquid storage cooling tank 18 is provided below the valve body 1;

[0065] 4-6, when the valve plate 7 needs to be rotated to open and the material in the valve body 1 needs 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 in contact with 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 cover 9 to rotate. When the air collecting cover 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 is engaged and slidably connected with the card block on the outer side of the left end of the adjusting shaft 16, which will cause the rotating shaft 10 to rotate together with the adjusting shaft 16. The turbine blades 15 will rotate together. At this time, the turbine blades 15 will generate a certain suction to store The coolant in the liquid cooling tank 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 very well. Then the turbine blades 15 continue to rotate, which will cause the coolant in the spiral pipe 17 to flow into the liquid storage cooling tank 18 through the connecting hose. Then the coolant in the liquid storage cooling tank 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. 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 perform high-temperature resistant operations well, thereby improving the service life of the entire engine butterfly valve.

[0066] Referring to Figure 11, the main sealing valve seat assembly includes 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. It 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 main sealing valve seat 21 and the valve plate 7 have sealing surfaces that contact each other to form a seal. When the valve is closed, the main sealing valve seat 21 and the valve plate 7 are in contact with 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.

[0067] Example 2:

[0068] Compared with the first embodiment, the present application refers to Figures 7 and 10. When the rotating shaft 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 movement of the rotating shaft 10 to the right, 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 The rod 101 is connected to one end of the connecting spring 103, and a sliding groove 102 with a "T"-shaped structure is opened 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;

[0069] 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 by 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 into contact with 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 that the rotating shaft 10 drives the cleaning brush rod 101 to rotate, so that the cleaning brush rod 101 can well brush away the impurities adhering to the surface of the valve plate 7, which is convenient for the use of the valve plate 7. 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, thereby accelerating the flow of materials in the valve body 1, improving the conveying efficiency of the valve body 1, and then shortening the residence time of high-temperature materials in the valve body 1, thereby making the entire engine butterfly valve well resistant to high temperature use.

[0070] The working principle of this embodiment is as follows: When using this high-temperature resistant engine butterfly valve, first, the material is blocked by the valve plate 7 and prevented from entering the right side of the valve body 1. At this time, a portion of the material exerts a certain impact force on the bowl-shaped gas collecting cover 9, causing the gas collecting cover 9 to drive the rotating shaft 10 to move to the right. At this time, a portion of the gas in the connecting airbag 82 exerts a leftward thrust on the pressure plate 13, thereby reducing the impact force of the material on the valve plate 7.

[0071] 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.

[0072] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0073] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0074] 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 scope of protection 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 installed inside the right side 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; The buffer protection component is installed on the left side of the valve plate (7) and inside the valve plate (7). 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).

2. A high temperature resistant engine butterfly valve according to claim 1, characterized in that: The buffer protection component includes a rotating shaft (10) that passes through and is slidably connected to the left side of the valve plate (7), and a pressure plate (13) connected to the right end bearing of the rotating shaft (10), and also includes a connecting air bag (82) installed inside the valve plate (7). The left end of the rotating shaft (10) is fixedly installed with an air collecting hood (9), and the right side of the pressure plate (13) is provided with a connecting air bag (82). The buffer protection component can further improve the sealing between the outer side of the valve plate (7) and the valve body (1).

3. A high temperature resistant engine butterfly valve according to claim 2, characterized in that: 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 the interior of the groove (72) is slidably connected to a rotating shaft (10), 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 seal of the valve stem (6) passes through the upper surface of the sealing airbag (8) and is fixedly connected and installed with the valve plate (7) through 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 interior of the limiting plate (11) passes through the interior of the limiting plate (11) and is slidably connected to the rotating shaft (10), and the inner diameter of the limiting plate (11) is smaller than the diameter of the groove (72).

4. A high temperature resistant engine butterfly valve according to claim 3, characterized in that: 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). The space in the connecting airbag (82) is connected to the space in the sealing airbag (8) through the connecting tubes (81).

5. A high temperature resistant engine butterfly valve according to claim 1, characterized in that: An inlet connecting flange (4) is fixed to the left side of the valve body (1), and an outlet connecting 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 (601) is provided on the outside of the control valve stem (6).

6. A high temperature resistant engine butterfly valve according to claim 3, characterized in that: Four damping rods (14) are installed with equiangular screws on the right side of the limit plate (11), and the right end of the damping rod (14) 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).

7. A high temperature resistant engine butterfly valve according to claim 6, characterized in that: The diameter of the pressure plate (13) is equal to the outer diameter of the limiting plate (11), and the pressure plate (13) forms a sliding structure with the valve plate (7) by rotating the shaft (10).

8. A high temperature resistant engine butterfly valve according to claim 2, characterized in that: A circle of toggle plates (91) are installed at equal angles on the outer side of the gas collecting hood (9), and 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.

9. A high temperature resistant engine butterfly valve according to claim 2, characterized in that: 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 the 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).

10. The 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), and 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).

11. 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 pad (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 main sealing valve seat (21) and the sealing surface of the valve plate (7) contact each other to form a main seal.

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