Fan-shaped blind plate valve for regulating and controlling fluid circulation and method of fan-shaped blind plate valve

Abstract

The invention discloses a fan-shaped blind plate valve for regulating and controlling fluid circulation and a method thereof, and relates to the field of valves.The fan-shaped blind plate valve comprises a detachable valve body, two movable core plates which are symmetrically distributed front and back are slidably embedded in the valve body, and center round holes are formed in the movable core plates; the blind plate can be clamped or released through the locking unit, when the position of the blind plate is adjusted, the cleaning unit can be triggered to operate, the cleaning unit can remove impurities attached to the surface of a sealing gasket, and meanwhile, under the action of the slag discharging unit, the blind plate can be cleaned away from the surface of the sealing gasket, so that the blind plate can be cleaned away from the surface of the sealing gasket, and the service life of the sealing gasket is prolonged. Impurities in the protective cover shell are automatically discharged, the impurities are prevented from being excessively accumulated in the protective cover shell, in this way, it can be guaranteed that a large number of impurities cannot adhere to the sealing gasket when the positions of the sealing plate and the opening plate are replaced every time, and when the movable core plate extrudes the sealing gasket, the sealing gasket cannot be damaged. And the aging acceleration of the sealing gasket due to the extrusion of impurities is also avoided.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to a fan-shaped blind plate valve for regulating fluid circulation and a method thereof. Background Art

[0002] The blind plate valve is a gate valve that can be driven manually, electrically, pneumatically or hydraulically. It is widely used in converter gas, blast furnace gas, flue gas heating furnace gas and other fields. The working principle of the blind plate valve is that when the blind plate valve is to cut off the fluid in the pipeline, the hydraulic running device (i.e. the clamping mechanism) must be released first to drive the valve plate to move. The valve plate is like a closed lid that completely covers the pipeline opening to achieve the conversion of the through hole and the blind hole on the valve plate. After the conversion is completed, the clamping mechanism is driven to tightly connect the valve plate with the valve body.

[0003] In a large closed blind plate valve (i.e., the valve plate slides in a frame and the valve plate is not exposed), the sealing gasket is assembled in the valve body. Since a large amount of small solid particles (i.e., furnace dust) are mixed in the converter gas, blast furnace gas, and flue gas heating furnace gas, coal powder particle impurities will adhere to the contact surface between the conveying pipeline and the blind plate valve and the gas. When the valve plate switches its position inside the valve body, the coal powder particle impurities adhered to the inner surface of the valve body are also easily dropped due to the movement of the valve plate, causing the coal powder particles to easily adhere to the valve plate. If there are coal powder particle impurities adhered to the valve plate, when the hydraulic clamping mechanism in the subsequent valve body squeezes the valve plate, the coal powder particle impurities will be squeezed on the sealing gasket. After multiple squeezing and release, the influence of the coal powder particle impurities will accelerate the elastic fatigue of the sealing gasket, causing the sealing gasket to crack and break in a short time, affecting the sealing effect. Summary of the invention

[0004] The object of the present invention is to provide a fan-shaped blind plate valve and a method thereof for regulating fluid flow, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fan-shaped blind plate valve for regulating fluid flow, comprising: a detachable valve body, wherein two movable core plates symmetrically distributed front and back are slidably mounted inside the valve body, wherein the interior of the movable core plates are provided with central circular holes, and flange rings are fixedly arranged on the end faces of the two movable core plates away from each other, and the flange rings are used to connect pipelines, a blind plate is placed between the two movable core plates, and a closed plate and an open plate are fixedly arranged inside the blind plate, wherein the closed plate and the open plate are arranged in parallel, and the The centers of the closing plate and the opening plate are fixedly embedded with sealing gaskets, the upper and lower end surfaces of the blind plate are fixedly provided with thick strips, the blind plate and the thick strips are movably embedded between the two movable core plates, the interior of the valve body is also provided with two groups of empty slots, the number of each group of empty slots is two, and they are distributed up and down, each of the empty slots is also rotatably equipped with a pulley, the two groups of pulleys distributed up and down play a role in limiting the two thick strips, the left and right ends of the valve body are fixedly butt-jointed with protective cover shells, the protective cover shells play a role in protecting the closing plate;

[0006] It also includes: a cleaning unit, which cleans impurities adhering to the outer surface of the sealing gasket in a rotating manner, and the cleaning unit is arranged inside each of the protective cover shells;

[0007] A slag discharge unit, used to discharge the impurities removed by the cleaning unit into the interior of the protective cover shell, wherein the slag discharge unit is arranged at the bottom of each of the protective cover shells;

[0008] A locking unit is used to drive the two movable core plates to clamp and release the blind plate, and the locking unit is arranged outside the valve body.

[0009] Preferably, the cleaning unit includes two cleaning brush discs rotatably mounted inside each of the protective cover shells and distributed front and back relative to each other, the cleaning brush discs not contacting the thick strips, and the bristles of the two cleaning brush discs located inside the same protective cover shell are distributed facing each other, and a gear roller is also rotatably arranged inside each of the protective cover shells, the gear roller is located below the blind plate, and the lower end surface of one of the thick strips distributed below is provided with a plurality of teeth grooves distributed in a straight line and equidistantly, the thick strips are movably meshed with the gear roller through the teeth grooves, and a first synchronous gear is concentrically fixedly arranged on the end surface of the cleaning brush disc away from the blind plate, and a first synchronous toothed belt is transmission-assembled between the first synchronous gear and the gear roller, a threaded rod is assembled on the internal thread of one of the thick strips located below, and both ends of the threaded rod rotate and penetrate the protective cover shell, and a motor is fixedly mounted on one end of one of the protective cover shells away from the valve body, and the output end of the motor is fixed to the end of the threaded rod by a coupling.

[0010] Preferably, the slag discharge unit includes an extension frame fixedly mounted on the bottom of each of the protective cover shells, and the extension frame is communicated with the bottom of the protective cover shell, and at least two impellers are rotatably mounted on the bottom of each of the extension frames, and a gear differential is fixedly mounted on the end of the two protective cover shells away from the valve body, and the gear differential is located below the threaded rod, the output end of the gear differential faces downward, and the output end of the gear differential and the bottom of the rotating shaft of the impeller are fixedly sleeved with a second synchronous gear, and the outer surfaces of several second synchronous gears are driven and equipped with second synchronous toothed belts, and an auxiliary frame rod is also fixedly mounted on the bottom of the extension frame, and the auxiliary frame rod limits the second synchronous toothed belt so that the meshing of the second synchronous toothed belt and each of the second synchronous gears will not be disengaged, the input end of the gear differential is fixedly mounted with a first bevel gear, and the outer surfaces of both ends of the threaded rod are fixedly mounted with second bevel gears, and the first bevel gear and the second bevel gear located on the same side are meshed.

[0011] Preferably, the sealing gasket is hollow and retracts into the interior of the closed plate or the open plate when being squeezed.

[0012] Preferably, both end surfaces of the protective cover shell away from the blind plate are detachable structures.

[0013] Preferably, the locking unit includes a lever fixedly mounted on the upper and lower ends of each of the movable core plates, and a first straight groove for a short distance sliding of the lever is also provided inside the valve body. A worm gear is rotatably mounted on the upper and lower end surfaces of the valve body, and the worm gear is located at the center of the upper and lower end surfaces of the valve body. An arc groove is provided inside each of the worm gears, and the lever is slidably embedded in the arc groove. The distances between the two ends of the arc groove and the center of the worm gear are inconsistent. The upper and lower end surfaces of the valve body are rotatably mounted with a rotating shaft, and a worm is fixedly mounted on the outer surface of the rotating shaft. The worm wheel and the worm located on the same side are transmission assembled, and a driving component is also provided between the two rotating shafts and the valve body.

[0014] Preferably, the driving component includes a transmission gear rotatably mounted on one end of the rotating shaft, a curved rack is meshed between the two transmission gears, a hydraulic push rod is fixedly mounted on the outer wall of the valve body, and a connecting plate is fixedly arranged between the output end of the hydraulic push rod and the outside of the curved rack, a second straight groove is opened inside the curved rack, a positioning block is slidably assembled inside the second straight groove, and the positioning block is fixedly assembled with the valve body, and the positioning block is rectangular.

[0015] Preferably, a safety component is further provided between the connecting plate and the valve body, the safety component comprises an assembly plate fixedly mounted on the outside of the valve body, and a third straight groove is opened inside the assembly plate, a positioning column is slidably mounted inside the end of the connecting plate away from the curved rack, a second spring is fixedly arranged between the end of the positioning column close to the curved rack and the connecting plate, the positioning column slides through the third straight groove, a rubber ring is rotatably sleeved on the outer surface of the positioning column, and the rubber ring is located on the side of the assembly plate away from the curved rack, the assembly plate is a friction plate, and a sliding seat is also axially slidably mounted on the outside of the assembly plate, and the positioning column slides through the sliding seat, a cam is rotatably mounted on the end of the sliding seat away from the curved rack, the end of the positioning column slides in contact with the outer surface of the cam, and a positioning component is provided between the positioning column and the cam.

[0016] Preferably, the positioning member includes a positioning hole opened at the center of an end portion of the positioning column away from the curved rack, a handle is fixedly provided on the outside of the cam, a limit plate is slidably assembled inside the cam, the axis of the limit plate coincides with the long axis of the cam, and the handle is parallel to the long axis of the cam, a dome pin that slides through the cam is fixedly provided on the end of the limit plate away from the handle, and the dome pin is engaged with the positioning hole, a shift block is slidably assembled inside the handle, and a connecting rod is fixedly arranged between the shift block and the limit plate, the connecting rod is slidably assembled with the cam and the handle, a first spring is also assembled on the outer surface of the connecting rod, and the first spring is distributed between the end of the limit plate away from the dome pin and the inside of the cam.

[0017] An operating method of a fan-shaped blind plate valve for regulating fluid flow, the operating method comprising the following steps:

[0018] S1, the state switching stage of the movable core plate, the hydraulic push rod drives the worm to rotate with the worm wheel through the cooperation of the curved rack and the transmission gear. Since the lever is restricted by the first straight groove and the arc groove at the same time, the two movable core plates move synchronously towards each other to clamp the blind plate, or the two movable core plates move synchronously away from each other to release the blind plate;

[0019] S2, the stage of adjusting the position of the closing plate and the opening plate, based on the two movable core plates being in a released state for the blind plate, the blind plate can be moved laterally inside the valve body through the rotation of the threaded rod and the restriction of the valve body and the protective cover shell on the thick strip plate to adjust the position of the closing plate and the opening plate;

[0020] S3, impurity cleaning stage, the thick strip plate located at the bottom can drive the gear roller to rotate through the tooth groove when moving, and the cleaning disc can rotate under the action of the first synchronous toothed belt and the first synchronous gear, that is, the impurities on the surface of the closed plate and the open plate can be brushed out during the horizontal movement of the blind plate, and the impurities attached to the surface of the sealing gasket can be dropped;

[0021] S4, the impurities are automatically discharged. Through the action of the first bevel gear, the second bevel gear and the gear differential, when the threaded rod rotates, the impeller inside the extension frame is driven to rotate at the same time, and the impeller sucks and discharges the floating or adhering impurities inside the protective cover downward.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention can clamp or release the blind plate through the locking unit. When the position of the blind plate is adjusted, the cleaning unit will be triggered to run. The cleaning unit can remove impurities adhered to the surface of the sealing gasket. At the same time, under the action of the slag discharge unit, the impurities in the protective cover shell are automatically discharged to avoid excessive accumulation of impurities inside the protective cover shell. In this way, it can be ensured that each time the closed plate and the open plate are replaced, a large amount of impurities will not adhere to the sealing gasket. When the movable core plate squeezes the sealing gasket, it also avoids accelerating the aging of the sealing gasket due to the squeezing of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the valve body and protective cover shell of the present invention;

[0026] Figure 3 This is a schematic diagram of the blind plate and thick strip plate structure of the present invention;

[0027] Figure 4 It is a cross-sectional view of the valve body of the present invention;

[0028] Figure 5 This is a schematic diagram of the position distribution structure of the hydraulic push rod of the present invention;

[0029] Figure 6 It is a schematic diagram of the internal structure of the cam of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the threaded rod and the gear differential of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the cleaning brush plate of the present invention;

[0032] Fig. 9 It is a schematic diagram of the impeller and auxiliary frame rod structure of the present invention.

[0033] In the figure: 1, valve body; 2, movable core plate; 3, first straight groove; 4, lever; 5, worm gear; 6, arc groove; 7, rotating shaft; 8, worm; 9, transmission gear; 10, curved rack; 11, blind plate; 12, closing plate; 13, opening plate; 14, sealing gasket; 15, thick strip plate; 16, empty groove; 17, pulley; 18, hydraulic push rod; 19, connecting plate; 20, second straight groove; 21, positioning block; 22, assembly plate; 23, third straight groove; 24, positioning Column; 25, rubber ring; 26, positioning hole; 27, sliding seat; 28, cam; 29, handle; 30, limit plate; 31, dome latch; 32, connecting rod; 33, first spring; 34, shift block; 35, protective cover shell; 36, gear roller; 37, first synchronous gear; 38, cleaning brush plate; 39, threaded rod; 40, gear differential; 41, extension frame; 42, impeller; 43, second synchronous gear; 44, second synchronous toothed belt; 45, auxiliary frame rod. DETAILED DESCRIPTION

[0034] 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.

[0035] Example 1: Please refer to Figure 1-Figure 5, a fan-shaped blind plate valve for regulating fluid flow shown in the figure comprises: a detachable valve body 1, two movable core plates 2 symmetrically distributed front and back are slidably mounted inside the valve body 1, central circular holes are opened inside the movable core plates 2, flange rings are fixedly arranged on the end faces of the two movable core plates 2 away from each other, and the flange rings are used to connect the pipeline, a blind plate 11 is placed between the two movable core plates 2, and a closed plate 12 and an open plate 13 are fixedly arranged inside the blind plate 11, the closed plate 12 and the open plate 13 are distributed in parallel, and sealing gaskets 14 are fixedly mounted in the centers of the closed plate 12 and the open plate 13, thick strip plates 15 are fixedly arranged on the upper and lower end faces of the blind plate 11, and the blind plate 11 and the thick strip plates 15 are movably mounted on Between the two movable core plates 2, two groups of empty slots 16 are further provided inside the valve body 1. The number of each group of empty slots 16 is two and they are distributed up and down. A pulley 17 is also rotatably installed inside each empty slot 16. The two groups of pulleys 17 distributed up and down play a limiting role for the two thick strip plates 15. The upper end surface of the thick strip plate 15 located at the top and the lower end surface of the thick strip plate 15 located at the bottom only contact with the pulley 17 that can roll, so as to avoid the blind plate 11 from causing large friction loss with the inside of the valve body 1 when moving back and forth. The left and right ends of the valve body 1 are fixedly docked and equipped with protective cover shells 35. The protective cover shell 35 plays a protective role for the closing plate 12, wherein the thick strip plate 15 and the protective cover shell 35 are also designed for plug-in interlocking;

[0036] It also includes: a cleaning unit, which cleans impurities adhering to the outer surface of the sealing gasket 14 in a rotating manner, and the cleaning unit is arranged inside each protective cover shell 35;

[0037] The locking unit is used to drive the two movable core plates 2 to clamp and release the blind plate 11 , and the locking unit is arranged outside the valve body 1 .

[0038] The cleaning unit includes two cleaning brush discs 38 rotatably mounted inside each protective cover shell 35 and distributed front and back relative to each other. The cleaning brush discs 38 do not contact the thick strip plate 15. The bristles of the two cleaning brush discs 38 located inside the same protective cover shell 35 are distributed facing each other. A gear roller 36 is also rotatably arranged inside each protective cover shell 35. The gear roller 36 is located below the blind plate 11. The lower end surface of a thick strip plate 15 distributed below is provided with a plurality of tooth grooves distributed in a straight line and equidistantly. The thick strip plate 15 is movably meshed with the gear roller 36 through the tooth grooves. A first synchronous gear 37 is concentrically fixedly arranged on one end surface of the cleaning brush disc 38 away from the blind plate 11, and the first synchronous gear 37 is fixedly arranged on the first end surface of the cleaning brush disc 38 away from the blind plate 11. A first synchronous toothed belt is installed between the wheel 37 and the gear roller 36. A threaded rod 39 is installed on the internal thread of a thick strip plate 15 located below, and both ends of the threaded rod 39 rotate and penetrate the protective cover shell 35. A motor is fixedly mounted on the end of one of the protective cover shells 35 away from the valve body 1, and the output end of the motor is fixed to the end of the threaded rod 39 by a coupling. When the thick strip plate 15 moves, the tooth groove engages with the gear roller 36, driving the first synchronous gear 37 and the cleaning brush plate 38 to rotate. When the cleaning brush plate 38 rotates, it can use the bristles to brush off the coal dust impurities adhering to the surfaces of the closing plate 12, the opening plate 13 and the sealing gasket 14.

[0039] The sealing gasket 14 is hollow and retracts into the inside of the closed plate 12 or the open plate 13 when squeezed. That is, after the two movable core plates 2 effectively squeeze the blind plate 11, the sealing gasket 14 can retract into the inside of the closed plate 12 or the open plate 13 under the action of pressure, and no gap will appear between the closed plate 12 or the open plate 13 and the movable core plate 2. It should be noted that the thickness of the blind plate 11, the closed plate 12 and the open plate 13 are consistent.

[0040] The two end surfaces of the protective cover shell 35 away from the blind plate 11 are both detachable structures, that is, the panels of the protective cover shell 35 can be removed to facilitate the replacement of the sealing gasket 14.

[0041] The locking unit includes a lever 4 fixedly mounted on the upper and lower ends of each movable core plate 2. A first straight groove 3 for a short distance sliding of the lever 4 is also provided inside the valve body 1. A worm gear 5 is rotatably mounted on the upper and lower end surfaces of the valve body 1, and the worm gear 5 is located at the center of the upper and lower end surfaces of the valve body 1. An arc groove 6 is provided inside each worm gear 5. The lever 4 is slidably embedded in the arc groove 6. The distances between the two ends of the arc groove 6 and the center of the worm gear 5 are inconsistent. Since the lever 4 is restricted by the first straight groove 3 and the arc groove 6 at the same time, the worm gear 5 can make the two movable core plates 2 move synchronously in opposite directions through the lever 4 when rotating. The upper and lower end surfaces of the valve body 1 are rotatably mounted with a rotating shaft 7, and a worm 8 is fixedly mounted on the outer surface of the rotating shaft 7. The worm wheel 5 and the worm 8 located on the same side are transmission assemblies, and a driving component is also provided between the two rotating shafts 7 and the valve body 1.

[0042] The driving component includes a transmission gear 9 rotatably mounted on one end of the rotating shaft 7, a curved rack 10 is meshed between the two transmission gears 9, a hydraulic push rod 18 is fixedly mounted on the outer wall of the valve body 1, and a connecting plate 19 is fixedly arranged between the output end of the hydraulic push rod 18 and the outside of the curved rack 10, a second straight groove 20 is opened inside the curved rack 10, a positioning block 21 is slidably assembled inside the second straight groove 20, and the positioning block 21 is fixedly assembled with the valve body 1, and the positioning block 21 is rectangular. The rectangular positioning block 21 is embedded in the second straight groove 20, so that the stability of the axial movement of the curved rack 10 can be ensured.

[0043] Example 2: Please refer to Figure 7-Figure 9 This embodiment is a further description of the first embodiment. The slag discharge unit is used to discharge the impurities removed by the cleaning unit into the interior of the protective cover shell 35. The slag discharge unit is arranged at the bottom of each protective cover shell 35. The slag discharge unit includes an extension frame 41 fixedly mounted at the bottom of each protective cover shell 35, and the extension frame 41 is interconnected with the bottom of the protective cover shell 35. At least two impellers 42 are rotatably mounted at the bottom of each extension frame 41. A gear differential 40 is fixedly mounted at one end of the two protective cover shells 35 away from the valve body 1, and the gear differential 40 is located below the threaded rod 39, and the output end of the gear differential 40 faces downward, and the output end of the gear differential 40 and the bottom of the rotating shaft of the impeller 42 are fixedly sleeved with a second synchronous Gear 43, the outer surface transmission of several second synchronous gears 43 is equipped with a second synchronous toothed belt 44, and an auxiliary frame rod 45 is fixedly mounted on the bottom of the extension frame 41. The auxiliary frame rod 45 limits the second synchronous toothed belt 44, so that the meshing of the second synchronous toothed belt 44 and each second synchronous gear 43 will not be disengaged. The input end of the gear differential 40 is fixedly equipped with a first bevel gear, and the outer surfaces of both ends of the threaded rod 39 are fixedly equipped with second bevel gears. The first bevel gear and the second bevel gear on the same side are meshed. The gear differential 40 has a speed-increasing effect, that is, when the threaded rod 39 rotates slowly, it is transmitted through the gear differential 40, so that the output end of the gear differential 40 can rotate at a high speed with the impeller 42.

[0044] Example 3: Please refer to Figure 6, this embodiment is a further description of the first embodiment, a safety component is further arranged between the connecting plate 19 and the valve body 1, the safety component comprises an assembly plate 22 fixedly mounted on the outside of the valve body 1, and a third straight groove 23 is opened inside the assembly plate 22, a positioning column 24 is slidably mounted inside the end of the connecting plate 19 away from the curved rack 10, a second spring is fixedly arranged between the end of the positioning column 24 close to the curved rack 10 and the connecting plate 19, the positioning column 24 slides through the third straight groove 23, a rubber sleeve 25 is rotatably sleeved on the outer surface of the positioning column 24, and the rubber sleeve 25 is located at the end of the assembly plate 22 away from the curved rack 10. On one side of the rack 10, the assembly plate 22 is a friction plate, that is, the end surface of the assembly plate 22 away from the curved rack 10 has a friction structure, such as grooves, convex particles, etc. When the rubber ring 25 is pressed against the surface of the assembly plate 22, the friction between the assembly plate 22 and the rubber ring 25 can be increased. The outside of the assembly plate 22 is also axially slidably equipped with a sliding seat 27, and the positioning column 24 slides through the sliding seat 27. The end of the sliding seat 27 away from the curved rack 10 is rotatably equipped with a cam 28, and the end of the positioning column 24 is in sliding contact with the outer surface of the cam 28, and a positioning piece is provided between the positioning column 24 and the cam 28.

[0045] The positioning member includes a positioning hole 26 opened at the center of one end of the positioning column 24 away from the curved rack 10, a handle 29 is fixedly provided on the outside of the cam 28, and a limit plate 30 is slidably assembled inside the cam 28. The axis of the limit plate 30 coincides with the long axis of the cam 28, and the handle 29 is parallel to the long axis of the cam 28. A dome pin 31 that slides through the cam 28 is fixedly provided on the end of the limit plate 30 away from the handle 29, and the dome pin 31 is engaged with the positioning hole 26, and the handle A shift block 34 is slidably assembled inside 29, and a connecting rod 32 is fixedly arranged between the shift block 34 and the limit plate 30. The connecting rod 32 is slidably assembled with the cam 28 and the handle 29. The handle 29 facilitates the rotation of the cam 28. The cam 28 pushes the positioning column 24 through the cam 28 to make the rubber ring 25 rest on the surface of the assembly plate 22. The outer surface of the connecting rod 32 is also equipped with a first spring 33, and the first spring 33 is distributed between the end of the limit plate 30 away from the dome pin 31 and the inside of the cam 28.

[0046] Working principle:

[0047] The hydraulic push rod 18 drives the curved rack 10 to move up and down, and during the movement, the meshing of the curved rack 10 with the transmission gear 9 and the meshing of the worm 8 with the worm wheel 5 can cause the worm wheel 5 to deflect, and during the deflection, the movable core plate 2 can move synchronously in the opposite direction. When the blind plate valve in the flow state needs to be switched to the closed state, the two movable core plates 2 are driven to move away from each other and unfold, and the blind plate 11 is no longer clamped. During the process of the central circular hole of the movable core plate 2 conveying the boiler gas, the coal powder impurities in the boiler gas will adhere to the inner wall of the central circular hole and the inner wall of the central hole of the open plate 13. Therefore, when the two movable core plates 2 are separated, the adhered coal powder impurities are easy to loosen, so that when the blind plate 11 moves between the two movable core plates 2, the coal powder will adhere to the surface of the sealing gasket 14;

[0048] Based on this situation, as attached Figure 2 As shown, when the closing plate 12 is driven to replace the open plate 13, the blind plate 11 moves to the right. During the movement, the coal powder impurities on the inner wall of the central hole of the open plate 13 will be brought into the interior of the protective cover shell 35. The movement of the thick strip plate 15 can make the left cleaning disc 38 rotate first, and the surface of the sealing gasket 14 distributed on the closing plate 12 is cleaned in advance, so that the closing plate 12 moves to the center of the valve body 1 with the sealing gasket 14 with a clean surface;

[0049] When the thick strip plate 15 contacts the gear roller 36 on the right side, the cleaning disc 38 on the right side can also be rotated to allow the cleaning disc 38 to clean the inner wall of the center hole of the open plate 13 and the sealing gasket 14 .

[0050] By cleaning the surface of the closed plate 12 or the open plate 13 to be replaced each time the blind plate 11 is switched, it is possible to avoid the adhesion and accumulation of coal powder on the sealing gaskets 14 of both, and to avoid the movable core plate 2 squeezing the sealing gasket 14 through the coal powder, thereby accelerating the aging of the sealing gasket 14.

[0051] At the same time, in the present scheme, when the two movable core plates 2 are not clamped against the blind plate 11, there is a large gap between the two and the blind plate 11. During the process of driving the thick strip plate 15 to move with the blind plate 11 through the threaded rod 39, the two sets of impellers 42 can also rotate at high speed. The impeller 42 sucks the air inside the protective cover shell 35 and discharges it downward. At the same time, the external air flow can enter the protective cover shell 35 through the gap between the movable core plate 2 and the blind plate 11. In this way, the floating dust swept by the cleaning disc 38 can be discharged from the protective cover shell 35, thereby avoiding the accumulation of coal powder impurities inside the protective cover shell 35.

[0052] In this solution, it is also considered that if there is a power outage in the factory area, the hydraulic push rod 18 will not be able to continue to apply hydraulic pressure to the worm gear 5, and the two movable core plates 2 may become loose. If the movable core plate 2 is loose, the fluid inside the valve body 1 will be discharged into the air from the gap between the movable core plate 2 and the blind plate 11. Therefore, in this solution, when the movable core plate 2 effectively clamps the blind plate 11, the staff can rotate the cam 28 through the handle 29, and push the positioning column 24 through the cam 28, so that the rubber ring 25 is tightly against the surface of the assembly plate 22, and the rubber ring 2 5 and the assembly plate 22, the position between the positioning column 24 and the assembly plate 22 is limited, and the positioning column 24 can limit the position of the curved rack 10 through the connecting plate 19, and after the cam 28 swings 90 degrees to push the positioning column 24, the dome pin 31 can be embedded in the interior of the positioning hole 26, so that after the cam 28 presses the positioning column 24 tightly, it will not loosen at will. In this way, it is possible to cope with emergencies and ensure that the position of the curved rack 10 will not change, thereby ensuring the stability of the active core plate 2 clamping the blind plate 11.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan-shaped blind plate valve for regulating fluid flow, characterized in that: include: A detachable valve body (1), wherein two symmetrically distributed movable core plates (2) are slidably mounted inside the valve body (1), and the movable core plates (2) are each provided with a central circular hole. A blind plate (11) is placed between the two movable core plates (2), and a closed plate (12) and an open plate (13) are fixedly mounted inside the blind plate (11). Sealing gaskets (14) are fixedly mounted at the centers of the closed plate (12) and the open plate (13). Thick strip plates (15) are fixedly mounted on the upper and lower end surfaces of the blind plate (11), and the blind plate (11) and the thick strip plates (15) are movably mounted between the two movable core plates (2). The left and right ends of the valve body (1) are both fixedly butt-jointedly mounted with protective covers (35), and the protective covers (35) protect the closed plate (12); Also includes: A cleaning unit, which cleans impurities adhering to the outer surface of the sealing gasket (14) in a rotating manner, wherein the cleaning unit is arranged inside each of the protective cover shells (35); A slag discharge unit, used for discharging impurities removed by the cleaning unit into the interior of the protective cover shell (35), wherein the slag discharge unit is arranged at the bottom of each of the protective cover shells (35); A locking unit is used to drive the two movable core plates (2) to clamp and release the blind plate (11), and the locking unit is arranged outside the valve body (1).

2. A fan-shaped blind plate valve for regulating fluid flow according to claim 1, characterized in that: The cleaning unit comprises two cleaning brush discs (38) which are rotatably mounted inside each of the protective cover shells (35) and are arranged opposite to each other. A gear roller (36) is also rotatably mounted inside each of the protective cover shells (35). The gear roller (36) is located below the blind plate (11). The lower end surface of one of the thick strip plates (15) located below is provided with a plurality of tooth grooves which are equidistantly distributed in a straight line. The thick strip plate (15) is movably engaged with the gear roller (36) through the tooth grooves. A first synchronous gear (37) is fixedly mounted on one end surface of the cleaning brush disc (38) away from the blind plate (11), and a first synchronous toothed belt is arranged between the first synchronous gear (37) and the gear roller (36). A threaded rod (39) is arranged on the internal thread of one of the thick strip plates (15) located below, and both ends of the threaded rod (39) are rotatably penetrated through the protective cover shell (35).

3. A fan-shaped blind plate valve for regulating fluid flow according to claim 2, characterized in that: The slag discharge unit comprises an extension frame (41) fixedly mounted on the bottom of each of the protective cover shells (35), and the extension frame (41) is interconnected with the bottom of the protective cover shell (35), and at least two impellers (42) are rotatably mounted on the bottom of each of the extension frames (41), and a gear differential (40) is fixedly mounted on one end of the two protective cover shells (35) away from the valve body (1), and a second synchronous gear (43) is fixedly mounted on the output end of the gear differential (40) and the bottom of the rotating shaft of the impeller (42), and a plurality of the second synchronous gears (43) are fixedly mounted. 3) is equipped with a second synchronous toothed belt (44) on its outer surface transmission, an auxiliary frame rod (45) is fixedly mounted on the bottom of the extension frame (41), and the auxiliary frame rod (45) has a limiting effect on the second synchronous toothed belt (44), so that the meshing of the second synchronous toothed belt (44) and each of the second synchronous gears (43) will not be disengaged, the input end of the gear differential (40) is fixedly equipped with a first bevel gear, and the outer surfaces of both ends of the threaded rod (39) are fixedly equipped with second bevel gears, and the first bevel gear and the second bevel gear located on the same side are meshed.

4. A fan-shaped blind plate valve for regulating fluid flow according to claim 1, characterized in that: The sealing gasket (14) is hollow and retracts into the interior of the closed plate (12) or the open plate (13) when the sealing gasket (14) is squeezed.

5. A fan-shaped blind plate valve for regulating fluid flow according to claim 2, characterized in that: Both end surfaces of the protective cover shell (35) away from the blind plate (11) are detachable structures.

6. A fan-shaped blind plate valve for regulating fluid flow according to claim 1, characterized in that: The locking unit includes a lever (4) fixedly mounted on the upper and lower ends of each of the movable core plates (2); a first straight groove (3) for the sliding of the lever (4) is also provided inside the valve body (1); a worm gear (5) is rotatably mounted on the upper and lower end surfaces of the valve body (1); an arc groove (6) is provided inside each of the worm gears (5); the lever (4) is slidably embedded in the arc groove (6); a rotating shaft (7) is rotatably mounted on the upper and lower end surfaces of the valve body (1); and a worm (8) is fixedly mounted on the outer surface of the rotating shaft (7); the worm gear (5) and the worm (8) located on the same side are transmission assemblies; a driving component is also provided between the two rotating shafts (7) and the valve body (1).

7. A fan-shaped blind plate valve for regulating fluid flow according to claim 6, characterized in that: The driving component comprises a transmission gear (9) rotatably mounted on one end of the rotating shaft (7); a curved rack (10) is meshed between the two transmission gears (9); a hydraulic push rod (18) is fixedly mounted on the outer wall of the valve body (1); a connecting plate (19) is fixedly mounted between the output end of the hydraulic push rod (18) and the outside of the curved rack (10); a second straight groove (20) is provided inside the curved rack (10); a positioning block (21) is slidably mounted inside the second straight groove (20); and the positioning block (21) is fixedly mounted on the valve body (1).

8. A fan-shaped blind plate valve for regulating fluid flow according to claim 7, characterized in that: A safety component is also provided between the connecting plate (19) and the valve body (1), the safety component comprising an assembly plate (22) fixedly mounted on the outside of the valve body (1), and a third straight groove (23) is provided inside the assembly plate (22), a positioning column (24) is slidably mounted inside the end of the connecting plate (19) away from the curved rack (10), a second spring is fixedly provided between the end of the positioning column (24) close to the curved rack (10) and the connecting plate (19), and the positioning column (24) slides through the connecting plate (19) to form a second spring. The third straight groove (23) is provided, and the outer surface of the positioning column (24) is rotatably sleeved with a rubber ring (25). The outer part of the assembly plate (22) is also axially slidably assembled with a sliding seat (27), and the positioning column (24) slides through the sliding seat (27). The end of the sliding seat (27) away from the curved rack (10) is rotatably assembled with a cam (28), and the end of the positioning column (24) is in sliding contact with the outer surface of the cam (28), and a positioning piece is provided between the positioning column (24) and the cam (28).

9. A fan-shaped blind plate valve for regulating fluid flow according to claim 8, characterized in that: The positioning member comprises a positioning hole (26) provided at an end of the positioning column (24) away from the curved rack (10); a handle (29) is fixedly provided on the outside of the cam (28); a limit plate (30) is slidably mounted inside the cam (28); a dome latch (31) is fixedly mounted on the end of the limit plate (30) away from the handle (29) and slides through the cam (28); the dome latch (31) is engaged with the positioning hole (26); a shift block (34) is slidably mounted inside the handle (29); a connecting rod (32) is fixedly provided between the shift block (34) and the limit plate (30); the connecting rod (32) is slidably mounted on the cam (28) and the handle (29); and a first spring (33) is also mounted on the outer surface of the connecting rod (32).

10. An operating method of a fan-shaped blind plate valve for regulating fluid flow according to any one of claims 1 to 9, characterized in that: The operation method includes the following steps: S1, the state switching stage of the movable core plate (2), the hydraulic push rod (18) drives the worm (8) to rotate with the worm wheel (5) through the cooperation of the curved rack (10) and the transmission gear (9), and because the lever (4) is restricted by the first straight groove (3) and the arc groove (6) at the same time, the two movable core plates (2) move synchronously towards each other to clamp the blind plate (11), or the two movable core plates (2) move synchronously away from each other to release the blind plate (11); S2, the position adjustment stage of the closing plate (12) and the opening plate (13), based on the two movable core plates (2) being in a released state with respect to the blind plate (11), the blind plate (11) can be moved laterally inside the valve body (1) through the rotation of the threaded rod (39) and the restriction of the valve body (1) and the protective cover shell (35) on the thick strip plate (15), so as to adjust the position of the closing plate (12) and the opening plate (13); S3, impurity cleaning stage, the thick strip plate (15) located at the bottom can drive the gear roller (36) to rotate through the tooth groove when moving, and under the action of the first synchronous toothed belt and the first synchronous gear (37), the cleaning brush plate (38) can rotate, that is, during the lateral movement of the blind plate (11), the impurities on the surface of the closed plate (12) and the open plate (13) can be brushed out, and the impurities attached to the surface of the sealing gasket (14) can be dropped; S4, the impurities are automatically discharged. Through the action of the first bevel gear, the second bevel gear and the gear differential (40), when the threaded rod (39) rotates, the impeller (42) inside the extension frame (41) is driven to rotate at the same time, and the impeller (42) sucks and discharges the impurities floating or adhering to the inside of the protective cover shell (35) downward.

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