An emergency flap valve in case of power failure

Abstract

The utility model discloses a power failure emergency turn -plate valve, include: base, casing, connecting flange portion, trigger subassembly, valve plate, side cavity and valve plate axle, wherein, the base is fixedly connected with casing, the casing upper end is welded with connecting flange portion, the casing one side is welded with trigger subassembly, and the opposite side is fixedly connected with side cavity, the casing is installed with valve plate axle, and the both sides of valve plate axle are provided with the axle end sealing and are tightly connected with trigger subassembly, and the valve plate is connected with valve plate on the valve plate axle.

Description

Technical Field

[0001] This utility model relates to the field of emergency shut-off devices, specifically to a power failure emergency flap valve. Background Technology

[0002] Industrial waste textiles, wood chips, lightweight combustible waste, and construction waste have relatively low calorific value but are highly flammable compared to coal, and are therefore frequently used as alternative fuels in cement production. One method of adding alternative fuels involves first transporting them to the preheater decomposition furnace via a conveyor system, and then directly injecting them into the decomposition furnace for combustion, thus participating in the production system.

[0003] During normal production, the production system operates under negative pressure. However, power outages occasionally occur. Upon power loss, positive pressure is generated internally, causing 900°C high-temperature gas to flow back into the alternative fuel system along the transport route. Due to the flammability of the alternative fuel, failure to quickly and effectively cut off the transport channel to prevent the hot gas backflow can easily lead to a fire, causing personal injury and property damage.

[0004] Currently, alternative fuel systems generally use pneumatic gate valves or screw conveyors to shut off the conveying system to prevent high-temperature gas backflow. However, due to the nature of the equipment, there are problems such as incomplete isolation and long shut-off times.

[0005] Therefore, there is a need to provide an emergency flap valve for power failure to solve the above-mentioned technical problems. Utility Model Content

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power failure emergency flap valve, comprising: a base, a housing, a connecting flange, a trigger assembly, a valve plate, a side cavity, and a valve plate shaft. The housing is fixedly connected to the base, the connecting flange is welded to the upper end of the housing, the trigger assembly is welded to one side of the housing, and the side cavity is fixedly connected to the other side. The valve plate shaft is mounted on the housing, and shaft end seals are provided on both sides of the valve plate shaft and are securely connected to the trigger assembly. The valve plate is pinned to the valve plate shaft.

[0007] A sliding cavity is fixedly connected to the top of the side cavity, and a control plate is slidably connected inside the sliding cavity. An auxiliary component is provided at the bottom of the side cavity, and an auxiliary component is installed in the middle of the side cavity. A rotating plate is also provided inside the housing.

[0008] Furthermore, as a preferred embodiment, the triggering assembly includes: a slant rod, a mounting bracket, an electromagnet, a rocker arm, a counterweight, a steel wire rope, and a paramagnetic block. The mounting bracket is welded to the housing via the slant rod, the electromagnet is fastened to the mounting bracket by bolts, one end of the rocker arm is fastened to the valve plate shaft, and the other end is fixedly connected to the counterweight. The counterweight is connected to the paramagnetic block via the steel wire rope, and the side wall of the counterweight is provided with a striking part. The paramagnetic block 47 can be magnetically attracted by the electromagnet 43.

[0009] Furthermore, preferably, the gain or loss of power of the electromagnet is synchronized with the gain or loss of power of the production system.

[0010] Furthermore, as a preferred embodiment, the control plate includes: a lower protrusion, an upper protrusion, and a striking end, wherein the lower protrusion is disposed on the lower outer wall of the control plate, the upper protrusion is disposed on the upper outer wall of the control plate, the striking end is disposed at the bottom end of the control plate, the top end of the control plate is slidably connected to the sliding cavity, and the bottom end of the control plate slidably penetrates into the housing, with a sealing element disposed at the penetration point.

[0011] Furthermore, as a preferred embodiment, the auxiliary component includes: an auxiliary spring, an air chamber, a pusher plate, an air passage, and a sealing bladder. One end of the auxiliary spring is connected to the inner wall of the side cavity, and the other end is connected to the pusher plate. The air chamber is connected to the inner wall of the side cavity located above the auxiliary spring. The input end of the air chamber is rotatably connected to the pusher plate. The sealing bladder is tightly fitted onto the outer wall of the connection between the upper and lower parts of the housing. One end of the air passage is connected to the output end of the air chamber, and the other end is connected to the sealing bladder.

[0012] Furthermore, as a preferred embodiment, the auxiliary two-component assembly includes: a connecting part, a measuring spring, a measuring plate, and a measuring sensor. One end of the connecting part is connected to the inner wall of the side cavity, and the other end is connected to the outer wall of the housing through the measuring sensor. An opening is provided in the middle of the connecting part. The measuring plate is connected to the two side walls of the connecting part through the measuring spring. The two sets of measuring springs are each composed of four individual springs arranged equidistantly from top to bottom in the vertical direction.

[0013] Furthermore, as a preferred embodiment, the lower protrusion corresponds to the position of the auxiliary component one, the upper protrusion corresponds to the position of the auxiliary component two, the sensing end of the measuring sensor is rotatably connected to the rotating plate, the end of the rotating plate away from the measuring sensor is provided with a fitting part, the inner wall of the housing is provided with an arc-shaped track, and the side end of the rotating plate is slidably embedded in the arc-shaped track.

[0014] Furthermore, as a preferred embodiment, a spherical recess is provided on one side of the valve plate, and five sets of spiral grooves are provided on the inner circumference of the spherical recess. The area of ​​the valve plate is larger than the diameter at the connection between the upper and lower parts of the housing, and an arc portion is provided at the end of the valve plate away from the valve plate axis.

[0015] Compared with the prior art, this utility model provides an emergency flap valve for power failure, which has the following advantages:

[0016] Advantage 1: This invention can reliably ensure the complete isolation of high-temperature gas without relying on any dual protection operations of initial and secondary sealing and cutting off the casing at the instant of power failure in the production system. It also has a backup system, enhancing the isolation effect against high-temperature gas backflow. The initial sealing and cutting off is the first effective area, which is crucial. Therefore, this invention can simultaneously reinforce the sealing and cutting off of the exterior of the first effective area at the instant of power failure to prevent damage to the first effective area and subsequent leakage of high-temperature gas. The secondary sealing and cutting off is the second effective area, designed to prevent failure of the first effective area during the initial sealing and cutting off, thus ensuring the entire process is completed successfully.

[0017] Advantage 2: This utility model has a spherical recess and a swirl groove on the valve plate. The five sets of swirl grooves on the spherical recess can guide the high-temperature gas in the first working area, thereby buffering the valve plate and further enhancing the blocking effect against the backflow of high-temperature gas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an emergency flap valve in the open state after a power failure.

[0019] Figure 2 This is a schematic diagram of the structure of a power failure emergency flap valve in the closed state.

[0020] Figure 3 This is a schematic diagram of the triggering component of a power failure emergency flap valve;

[0021] Figure 4 This is an auxiliary component of a power failure emergency flap valve. Figure 1 ;

[0022] Figure 5 This is the auxiliary two-component state of a power failure emergency flap valve. Figure 1 ;

[0023] Figure 6 This is an auxiliary component of a power failure emergency flap valve. Figure 2 ;

[0024] Figure 7 This is the auxiliary two-component state of a power failure emergency flap valve. Figure 2 ;

[0025] Figure 8 This is a schematic diagram of the valve plate structure of an emergency flap valve in the event of a power failure.

[0026] In the diagram: 1. Base; 2. Housing; 3. Connecting flange; 4. Trigger assembly; 41. Diagonal rod; 42. Mounting bracket; 43. Electromagnet; 44. Rocker arm; 45. Counterweight; 46. Steel wire rope; 47. Paramagnetic block; 5. Valve plate; 51. Spherical recess; 52. Rotary groove; 6. Side cavity; 7. Auxiliary assembly 1; 71. Auxiliary spring; 72. Air chamber; 73. Push plate; 74. Air passage; 75. Sealing bladder; 8. Auxiliary assembly 2; 81. Connecting part; 82. Measuring spring; 83. Measuring plate; 84. Measuring sensor; 9. Rotating plate; 91. Fitting part; 92. Arc track; 10. Sliding cavity; 11. Control plate; 111. Lower protrusion; 112. Upper protrusion; 113. Struck end; 12. Valve plate shaft. Detailed Implementation

[0027] Please see Figures 1-8 This utility model provides a power failure emergency flap valve, comprising: a base 1, a housing 2, a connecting flange 3, a trigger assembly 4, a valve plate 5, a side cavity 6, and a valve plate shaft 12. The housing 2 is fixedly connected to the base 1. The connecting flange 3 is welded to the upper end of the housing 2. The trigger assembly 4 is welded to one side of the housing 2, and the side cavity 6 is fixedly connected to the other side. The valve plate shaft 12 is mounted on the housing 2. Shaft end seals are provided on both sides of the valve plate shaft 12 and are securely connected to the trigger assembly 4. The valve plate 5 is pin-connected to the valve plate shaft 12.

[0028] A sliding cavity 10 is fixedly connected to the top of the side cavity 6, and a control plate 11 is slidably connected inside the sliding cavity 10. An auxiliary component 7 is provided at the bottom of the side cavity 6, and an auxiliary component 8 is installed in the middle of the side cavity 6. A rotating plate 9 is also provided inside the housing 2.

[0029] In this embodiment, when the production system is in normal operation, the valve plate 5 is in the open position (e.g., ...). Figure 1 As shown), the material enters from the top of the housing 2 and exits from the bottom. When the production system experiences a sudden power failure, the valve plate 5 changes from the open position to the closed position under the action of the trigger component 4 (as shown). Figure 2 As shown), the upper and lower parts of the housing 2 are sealed and cut off (hereinafter referred to as the first sealing and cutting off). At the same time, under the action of auxiliary component 7 and auxiliary component 8, the upper part of the housing 2 is sealed and cut off again (hereinafter referred to as the second sealing and cutting off).

[0030] Furthermore, the triggering component 4 includes: a diagonal rod 41, a mounting bracket 42, an electromagnet 43, a rocker arm 44, a counterweight 45, a steel wire rope 46, and a paramagnetic block 47. The mounting bracket 42 is welded to the housing 2 via the diagonal rod 41. The electromagnet 43 is fastened to the mounting bracket 42 by bolts. One end of the rocker arm 44 is fastened to the valve plate shaft 12, and the other end is fixedly connected to the counterweight 45. The counterweight 45 is connected to the paramagnetic block 47 via the steel wire rope 46. The side wall of the counterweight 45 is provided with a striking part. The paramagnetic block 47 can be magnetically attracted by the electromagnet 43.

[0031] Furthermore, the gain and loss of power of the electromagnet 43 is synchronized with the gain and loss of power of the production system.

[0032] For a preferred embodiment, please refer to Figure 1 , Figure 2 As shown, when the production system is in normal production, that is, the production system is in the energized state, the solenoid 43 is also in the energized state. At this time, the paramagnetic block 47 is tightly attracted to the solenoid 43 by magnetic force, which lifts the trigger component 4 to maintain a stationary state. At this time, the valve plate 5 is in the open state, and the material can pass through the housing 2 normally.

[0033] When the production system enters a power-off state, the solenoid 43 also instantly and synchronously enters a power-off state. At this time, the paramagnetic block 47 separates from the solenoid 43. Under the action of gravity, the hammer 45 will swing down from its stationary state. Subsequently, the striking part on its side wall will drive the valve plate 5 to swing up, so that the valve plate 5 is in the closed state, completing the first sealing and cutting off of the housing 2. This prevents the system from generating positive pressure due to power failure, which could cause hot air to flow back into the material conveying system, thus ensuring the fire safety of the material conveying system.

[0034] It should be noted that the position of the weight 45 on the rocker arm 44 can be dynamically adjusted according to the specific situation, and the length of the wire rope 46 can be dynamically adjusted according to the position of the weight 45. When the valve plate 5 is in the closed state, it remains stationary and will not swing back due to the influence of gravity.

[0035] Furthermore, the control plate 11 includes a lower protrusion 111, an upper protrusion 112, and a striking end 113. The lower protrusion 111 is disposed on the lower outer wall of the control plate 11, the upper protrusion 112 is disposed on the upper outer wall of the control plate 11, and the striking end 113 is disposed at the bottom of the control plate 11. The top end of the control plate 11 is slidably connected to the sliding cavity 10, and the bottom end of the control plate 11 slidably penetrates into the housing 2, with a sealing element provided at the penetration point.

[0036] In this embodiment, when the valve plate 5 enters the closed state, it will push the control plate 11 vertically upward within the slide cavity 10. During the process of the control plate 11 being pushed up, the auxiliary component 7 and the auxiliary component 8 will trigger a secondary sealing and cutting-off of the housing 2. The primary sealing and cutting-off and the secondary sealing and cutting-off will occur simultaneously at the moment the production system loses power. This will be described in detail below.

[0037] Furthermore, the auxiliary component 7 includes: an auxiliary spring 71, an air chamber 72, a pusher plate 73, an air passage 74, and a sealing bladder 75. One end of the auxiliary spring 71 is connected to the inner wall of the side cavity 6, and the other end is connected to the pusher plate 73. The air chamber 72 is connected to the inner wall of the side cavity 6 above the auxiliary spring 71. The input end of the air chamber 72 is rotatably connected to the pusher plate 73. The sealing bladder 75 is tightly attached to the outer wall of the connection between the upper and lower parts of the housing 2. One end of the air passage 74 is connected to the output end of the air chamber 72, and the other end is connected to the sealing bladder 75.

[0038] For a preferred embodiment, please refer to Figure 4 , Figure 6 As shown, as the control plate 11 is lifted, the lower protrusion 111, with the assistance of the auxiliary spring 71, will drive the push plate 73 from its initial tilted state (as shown). Figure 4 (as shown) transforms into a vertical state (as shown) Figure 6 As shown), during the state transition of the push plate 73, the gas pre-stored inside the air chamber 72 is injected into the sealing bladder 75 through the air passage 74. The sealing bladder 75 will saturate and inflate, thus strengthening the sealing of the outer wall at the connection between the upper and lower parts of the housing 2.

[0039] It should be noted that the process of the push plate 73 discharging the pre-stored gas inside the air chamber 72 can be achieved by means of a piston mechanism, and the pre-stored gas inside the air chamber 72 is sufficient to saturate and inflate the sealing bladder 75.

[0040] Furthermore, the auxiliary component 8 includes: a connecting part 81, a measuring spring 82, a measuring plate 83, and a measuring sensor 84. One end of the connecting part 81 is connected to the inner wall of the side cavity 6, and the other end is connected to the outer wall of the housing 2 through the measuring sensor 84. The connecting part 81 has an opening in the middle. The measuring plate 83 is connected to the two side walls of the connecting part 81 through the measuring spring 82. The two sets of measuring springs 82 are each composed of four individual springs arranged equidistantly from top to bottom in the vertical direction.

[0041] Furthermore, the lower protrusion 111 corresponds to the position of the auxiliary component 7, the upper protrusion 112 corresponds to the position of the auxiliary component 8, the sensing end of the measuring sensor 84 is rotatably connected to the rotating plate 9, the end of the rotating plate 9 away from the measuring sensor 84 is provided with a fitting part 91, the inner wall of the housing 2 is provided with an arc-shaped track 92, and the side end of the rotating plate 9 is slidably embedded in the arc-shaped track 92.

[0042] For a preferred embodiment, please refer to Figure 2 , Figure 5 , Figure 7 As shown, as the control plate 11 is lifted, the upper protrusion 112 will cause the measuring plates 83 on both sides to change from a vertical state (as shown in the image). Figure 5 (as shown) transforms into a tilted state (such as) Figure 7 As shown), during the state transition of the measuring plate 83 near the housing 2, a force difference will occur among the four individual springs in the corresponding set of measuring springs 82 (when the measuring plate 83 is in a vertical state, the four individual springs in the same set of measuring springs 82 have the same force). When the measuring sensor 84 detects this force difference, it will control the rotating plate 9 to change from a vertical state to an inclined state along the arc track 92 (the transition process is as follows). Figure 2 (As shown), until the fitting part 91 on the rotating plate 9 is tightly fitted to the upper inner wall of the housing 2, thus completing the secondary sealing and cutting of the housing 2.

[0043] This invention provides dual protection by performing both initial and secondary sealing operations on the casing 2 without external force during a power outage in the production system. This ensures complete and reliable isolation of high-temperature gas and provides a backup plan, enhancing the protection against high-temperature gas backflow. The initial sealing operation targets the first effective area (the connection between the upper and lower parts of the casing 2). This area is crucial; therefore, this invention simultaneously reinforces the seal on the outside of the first effective area during power loss to prevent damage and leakage of high-temperature gas. The secondary sealing operation targets the second effective area (the inner upper part of the casing 2). This area is designed to prevent failure of the initial sealing operation if the first effective area fails, thus rendering the entire process ineffective.

[0044] Furthermore, a spherical recess 51 is provided on one side of the valve plate 5, and five sets of spiral grooves 52 are provided on the inner circumference of the spherical recess 51. The area of ​​the valve plate 5 is larger than the diameter of the connection between the upper and lower parts of the housing 2, and an arc is provided at the end of the valve plate 5 away from the valve plate shaft 12.

[0045] In this embodiment, please refer to Figure 8 As shown, the five sets of swirl grooves 52 on the spherical recess 51 can guide the high-temperature gas in the first working area, thereby buffering the valve plate 5 and further enhancing the blocking effect against the backflow of high-temperature gas.

[0046] It should be noted that the arc on the valve plate 5 is designed to smoothly lift the control plate 11 vertically upwards, and the area of ​​the valve plate 5 is limited so that the material channel can be completely cut off when the valve plate 5 is in the closed state.

[0047] In practice, during normal production, valve plate 5 is in the open position, allowing material to enter from the top of housing 2 and exit from the bottom. When a power outage occurs, trigger component 4 causes valve plate 5 to change from the open to the closed position, initially sealing off the space between the upper and lower parts of housing 2. Simultaneously, auxiliary components 7 and 8 perform a secondary sealing off of the upper part of housing 2, effectively and quickly preventing the backflow of high-temperature gas.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A power failure emergency flap valve, characterized in that: include: The base (1), housing (2), connecting flange (3), trigger assembly (4), valve plate (5), side cavity (6), and valve plate shaft (12) are provided. The housing (2) is fixedly connected to the base (1). The connecting flange (3) is welded to the upper end of the housing (2). The trigger assembly (4) is welded to one side of the housing (2), and the side cavity (6) is fixedly connected to the other side. The valve plate shaft (12) is installed on the housing (2). The valve plate shaft (12) has shaft end seals on both sides and is fastened to the trigger assembly (4). The valve plate (5) is pin-connected to the valve plate shaft (12). The top of the side cavity (6) is fixedly connected to a sliding cavity (10), and a control plate (11) is slidably connected inside the sliding cavity (10). An auxiliary component (7) is provided at the bottom of the side cavity (6), and an auxiliary component (8) is installed in the middle of the side cavity (6). A rotating plate (9) is also provided inside the housing (2).

2. The emergency flap valve for power failure according to claim 1, characterized in that: The triggering assembly (4) includes: a slant rod (41), a mounting bracket (42), an electromagnet (43), a rocker arm (44), a counterweight (45), a steel wire rope (46), and a paramagnetic block (47). The mounting bracket (42) is welded to the housing (2) via the slant rod (41). The electromagnet (43) is fastened to the mounting bracket (42) by bolts. One end of the rocker arm (44) is fastened to the valve plate shaft (12), and the other end is fixedly connected to the counterweight (45). The counterweight (45) is connected to the paramagnetic block (47) via the steel wire rope (46). The side wall of the counterweight (45) is provided with a striking part. The paramagnetic block (47) can be magnetically attracted by the electromagnet (43).

3. The emergency flap valve for power failure according to claim 2, characterized in that: The gain and loss of power of the electromagnet (43) are synchronized with the gain and loss of power of the production system.

4. The emergency flap valve for power failure according to claim 1, characterized in that: The control plate (11) includes a lower protrusion (111), an upper protrusion (112), and a striking end (113). The lower protrusion (111) is disposed on the lower outer wall of the control plate (11), the upper protrusion (112) is disposed on the upper outer wall of the control plate (11), and the striking end (113) is disposed at the bottom of the control plate (11). The top end of the control plate (11) is slidably connected to the sliding cavity (10), and the bottom end of the control plate (11) slides through into the housing (2), with a sealing element provided at the penetration point.

5. The emergency flap valve for power failure according to claim 4, characterized in that: The auxiliary component (7) includes: an auxiliary spring (71), an air chamber (72), a pusher plate (73), an air passage (74), and a sealing bladder (75). One end of the auxiliary spring (71) is connected to the inner wall of the side cavity (6), and the other end is connected to the pusher plate (73). The air chamber (72) is connected to the side cavity (6) located on the upper inner wall of the auxiliary spring (71). The input end of the air chamber (72) is rotatably connected to the pusher plate (73). The sealing bladder (75) is tightly attached to the outer wall of the connection between the upper and lower parts of the housing (2). One end of the air passage (74) is connected to the output end of the air chamber (72), and the other end is connected to the sealing bladder (75).

6. The emergency flap valve for power failure according to claim 4, characterized in that: The auxiliary two-component (8) includes: a connecting part (81), a measuring spring (82), a measuring plate (83), and a measuring sensor (84). One end of the connecting part (81) is connected to the inner wall of the side cavity (6), and the other end is connected to the outer wall of the housing (2) through the measuring sensor (84). The connecting part (81) has an opening in the middle. The measuring plate (83) is connected to the two side walls of the connecting part (81) through the measuring spring (82). The two sets of measuring springs (82) are each composed of four individual springs arranged equidistantly from top to bottom in the vertical direction.

7. The emergency flap valve for power failure according to claim 6, characterized in that: The lower protrusion (111) corresponds to the position of the auxiliary component (7), the upper protrusion (112) corresponds to the position of the auxiliary component (8), the sensing end of the measuring sensor (84) is rotatably connected to the rotating plate (9), the end of the rotating plate (9) away from the measuring sensor (84) is provided with a fitting part (91), the inner wall of the housing (2) is provided with an arc-shaped track (92), and the side end of the rotating plate (9) is slidably embedded in the arc-shaped track (92).

8. The emergency flap valve for power failure according to claim 1, characterized in that: A spherical recess (51) is provided on one side of the valve plate (5), and five sets of spiral grooves (52) are provided on the inner circumference of the spherical recess (51). The area of ​​the valve plate (5) is larger than the diameter of the connection between the upper and lower parts of the housing (2). An arc is provided at the end of the valve plate (5) away from the valve plate shaft (12).

Images