A fire elevator internal environment protection system

Abstract

The present invention relates to the technical field of elevators, and discloses a fire-fighting elevator internal environment protection system, including an elevator shaft and a car, wherein the top and bottom ends of the elevator shaft are both provided with air inlets, and a filter is installed at the air inlet, the filter input end is connected to a connecting pipe, and the other end of the connecting pipe is connected to an air source; a mounting cover is fixedly installed on the top of the car, a dust screen is fixedly installed on the bottom of the mounting cavity, a dust scraping assembly is arranged on the top of the dust screen, and a dust exhaust assembly is arranged on the left side of the dust scraping assembly; a fan is fixedly installed on the right side of the mounting cover, and a driving assembly is arranged on the top of the mounting cover. The scraper is attached to the top of the dust screen and scrapes, pushing the solid particles in the dust accumulation groove to the left, and then the solid particles are pushed to the inclined dust exhaust channel and discharged to the outside of the mounting cover through the rotation of the rotating shaft and the dust pushing blade; thereby preventing a large amount of solid particles from accumulating in the middle of the dust screen, and ensuring the filtering effect of the air in the event of a fire.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to an internal environment protection system for a fire-fighting elevator. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building and whose car runs on at least two rows of rigid tracks that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line. The elevator car is equipped with ventilation equipment to ensure air circulation inside the car and to ensure that the temperature inside the car is appropriate.

[0003] In the event of an emergency such as a fire, if there are still passengers in the elevator car, the ventilation equipment will easily introduce harmful gases such as smoke generated by the fire into the car when it blows air into the car, which will harm the health of the passengers. However, the filters in the ventilation equipment of conventional elevators are difficult to guarantee the filtering effect of smoke in emergency situations such as fires, so further improvements can be made. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a fire elevator internal environment protection system, which has the advantages of ensuring the filtering effect of air in the event of a fire, and solves the problem that it is difficult to ensure the filtering effect of air when ventilating the cabin in the event of a fire.

[0005] In order to achieve the above-mentioned purpose of ensuring the filtering effect of air in the event of a fire, the present invention provides the following technical solutions: a fire elevator internal environment protection system, comprising an elevator shaft and a car, the elevator shaft is provided with air inlets at the top and bottom ends, and a filter is installed at the air inlet, the filter input end is connected to a connecting pipe, and the other end of the connecting pipe is connected to an air source; a mounting cover is fixedly installed on the top of the car, a mounting cavity is formed between the mounting cover and the top of the car, a through groove is provided on the top of the car, the car is connected to the mounting cavity through the through groove, a dust screen is fixedly installed on the bottom of the mounting cavity, a dust scraping assembly is provided on the top of the dust screen, and a dust exhaust assembly is provided on the left side of the dust scraping assembly; the mounting cover is fixedly installed on the right side A fan is installed, a drive assembly is arranged on the top of the installation cover, an air pressure sensor is installed inside the car, the air pressure sensor is used to monitor the air pressure inside the car, the air pressure sensor signal is connected with a controller, the controller is connected with the fan signal, when the air pressure inside the car is lower than a preset value, the controller controls the fan to start, when the air pressure inside the car is higher than the preset value, the controller controls the fan to stop; the controller signal is connected with a fire alarm, the fire alarm includes a smoke sensor and a temperature sensor, fire alarms are installed in the elevator shaft and the car, emergency lighting and communication equipment are installed inside the car, the emergency lighting and communication equipment are connected with the controller signal, and the controller is connected with the drive assembly signal.

[0006] Preferably, the dust scraping assembly includes a partition plate fixed in an array on the right inner wall of the mounting cover, and the bottom of the partition plate is fitted on the top of the dust screen; two groups of guide rods are fixedly installed on the right inner wall of the mounting cover, and an arched sleeve is slidably connected to the guide rod, and a scraper is slidably connected inside the arched sleeve, and a spring 1 is fixedly installed between the top of the scraper and the top wall of the arched sleeve, and a strip groove is provided in an array at the bottom of the scraper, and the strip groove corresponds to the partition plate one by one, and the partition plate passes through the strip groove; annular grooves are provided on the front and rear side walls of the mounting cover, and mounting holes are provided at both ends of the scraper, and a sliding column is slidably connected in the mounting hole, and a spring 2 is fixedly installed between the inner wall of the mounting hole and the sliding column, and the sliding column slides counterclockwise along the annular groove.

[0007] Preferably, the annular groove includes a lower horizontal groove, an inclined groove one, an upper horizontal groove and an inclined groove two, and the lower horizontal groove, the inclined groove one, the upper horizontal groove and the inclined groove two are connected in a counterclockwise direction to form a ring, and an inclined plate is fixedly installed in the left end of the lower horizontal groove, and the thickness of the inclined plate gradually increases from right to left. The left end of the inclined plate is inclined, and the left end of the inclined plate is flush with the right side wall of the inclined groove one.

[0008] Preferably, a connecting column is fixedly installed on the top of the arch sleeve, an avoidance groove is opened through the top of the mounting cover, the connecting column is slidably connected in the avoidance groove, a sealing plate is fixedly installed on the top of the connecting column, and the sealing plate covers the top opening of the avoidance groove.

[0009] Preferably, the dust exhaust assembly includes an arc-shaped cover fixedly mounted inside the left end of the mounting cover, the bottom end of the arc-shaped cover is fitted on the top of the dust screen, and its opening faces the left end of the partition plate, the left end of the partition plate is provided with an arc-shaped surface, the arc center of the left end of the partition plate coincides with the arc center of the arc-shaped cover, an inclined dust exhaust duct is fixedly mounted on the left side of the arc-shaped cover, and the inclined dust exhaust duct passes through the left end of the mounting cover; a rotating shaft is provided at the arc center of the arc-shaped cover, the rotating shaft passes through and is rotatably connected to the mounting cover, dust pushing blades are fixedly mounted on the circumferential surface array of the rotating shaft, and the dust pushing blades are fitted on the inner wall of the arc-shaped cover.

[0010] Preferably, the driving assembly includes an arch frame 1 fixedly mounted on the top of the mounting cover, an arch frame 2 fixedly mounted on the top of the arch frame 1, a motor fixedly mounted on the top of the arch frame 2, the output end of the motor passes through the arch frame 2, and a turntable 1 is fixedly mounted on the output end of the motor; the top wall of the arch frame 1 is rotatably connected to the turntable 2, the top of the mounting cover is rotatably connected to a fixed pulley 1 and a fixed pulley 2, the fixed pulley 1 and the fixed pulley 2 are vertically arranged, and the fixed pulley 1 is located in front of the fixed pulley 2 side; the turntable one, turntable two, fixed pulley one and fixed pulley two are connected by an annular belt, the annular belt is attached to the right half of the turntable one and turntable two, the annular belt extends to the left along the tangent direction of the turntable one and turntable two, and the annular belt is attached to the left half of the fixed pulley one and fixed pulley two; a push column is fixedly installed at the eccentric part of the bottom of the turntable two, and a guide frame is fixedly installed at the top center of the sealing plate, the guide frame and the sealing plate are perpendicular to each other, and the push column is slidably connected in the guide frame.

[0011] Preferably, a pulley 1 is coaxially fixed to the front side of the fixed pulley 1, a pulley 2 is fixedly installed at the front end of the rotating shaft, and the pulley 1 and the pulley 2 are connected by a transmission belt.

[0012] Preferably, an activated carbon filter plate is fixedly installed in the through groove on the top of the car, and a photocatalyst filter assembly is fixedly installed on the top wall of the car.

[0013] Preferably, the photocatalyst filter assembly includes a lower support cover fixedly mounted on the top wall of the car, a frame-shaped hollow plate fixedly mounted on the bottom of the lower support cover, a decorative plate fixedly mounted on the bottom of the frame-shaped hollow plate, a photocatalyst filter plate fixedly mounted inside the lower support cover, and a light strip fixedly mounted on the inner wall of the lower support cover.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present invention provides a fire elevator internal environment protection system, which has the following beneficial effects:

[0016] 1. In the fire elevator internal environment protection system, the air source introduces air into the filter through the connecting pipe. After the filter filters the air, the filtered air enters the elevator shaft; the air inside the elevator shaft is then transported to the installation cover through the fan. The air is filtered through the dust isolation net, and then purified by the activated carbon filter plate and the photocatalyst filter plate, and then passes through the frame-shaped hollow plate into the interior of the car, so that the elevator shaft and the interior of the car are in a slightly positive pressure state, preventing smoke and toxic gases from entering the interior of the car;

[0017] 2. The internal environment protection system of the fire elevator moves back and forth left and right along the guide rod through the arch sleeve, the sliding column slides counterclockwise along the annular groove, and during the sliding of the sliding column along the lower horizontal groove, the scraper fits on the top of the dust screen and scrapes, pushing the solid particles in the dust accumulation groove to the left, and then the solid particles are pushed to the inclined dust exhaust duct and discharged to the outside of the installation cover through the rotation of the rotating shaft and the dust pushing blades, thereby preventing a large amount of solid particles from accumulating in the middle of the dust screen and ensuring the air filtering effect in the event of a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a fire elevator internal environment protection system proposed by the present invention;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of a car of a fire-fighting elevator internal environment protection system proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the installation cover of the fire elevator internal environment protection system proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of a photocatalyst filter component of a fire elevator internal environment protection system proposed by the present invention;

[0022] Figure 5 A schematic diagram of the three-dimensional structure of a partition plate and a scraper plate in a dust scraping assembly of a fire elevator internal environment protection system proposed by the present invention;

[0023] Figure 6 A schematic diagram of the annular groove structure of the internal environment protection system of a fire elevator proposed by the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the inclined plate in the annular groove of the fire elevator internal environment protection system proposed by the present invention;

[0025] Figure 8 This is a schematic diagram of the main cross-sectional structure of a dust exhaust component of a fire elevator internal environment protection system proposed by the present invention;

[0026] Fig. 9 A schematic diagram of the three-dimensional structure of a guide frame in a driving assembly of a fire elevator internal environment protection system proposed by the present invention;

[0027] Fig.10 This is a schematic diagram of the three-dimensional structure of a drive component of a fire elevator internal environment protection system proposed by the present invention;

[0028] Fig.11 The present invention provides a control flow diagram of a fire elevator internal environment protection system.

[0029] In the figure: 100, elevator shaft; 200, elevator car; 300, filter; 400, installation cover; 500, fan; 600, dust screen; 700, dust scraping assembly; 800, dust exhaust assembly; 900, driving assembly; 1000, activated carbon filter plate; 1100, photocatalyst filter assembly; 301, connecting pipe;

[0030] 701, spacer plate; 702, scraper plate; 703, arched sleeve plate; 704, spring 1; 705, guide rod; 706, annular groove; 707, sliding column; 708, spring 2; 709, connecting column; 710, avoidance groove; 711, sealing plate; 7061, lower horizontal groove; 7062, inclined groove 1; 7063, upper horizontal groove; 7064, inclined groove 2; 7065, inclined plate;

[0031] 801, arc-shaped cover; 802, inclined dust exhaust channel; 803, rotating shaft; 804, dust pushing blade;

[0032] 901, arch frame 1; 902, arch frame 2; 903, motor; 904, turntable 1; 905, turntable 2; 906, fixed pulley 1; 907, fixed pulley 2; 908, endless belt; 909, push column; 910, guide frame; 911, pulley 1; 912, pulley 2; 913, transmission belt;

[0033] 1101. lower support cover; 1102. frame-shaped hollow plate; 1103. decorative plate; 1104. photocatalyst filter plate; 1105. light strip. DETAILED DESCRIPTION

[0034] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] 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.

[0036] See also Figure 1-Figure 4 and Fig.11A fire-fighting elevator internal environment protection system includes an elevator shaft 100 and a car 200. The elevator shaft 100 is provided with air inlets at the top and bottom, and a filter 300 is installed at the air inlet. The input end of the filter 300 is connected to a connecting pipe 301, and the other end of the connecting pipe 301 is connected to an air source. After the air is filtered by the filter 300, the air is passed into the elevator shaft 100, so that the interior of the elevator shaft 100 is in a slightly positive pressure state. An air pressure sensor is installed inside the car 200, and the air pressure sensor is used to monitor the air pressure inside the car 200. The air pressure sensor signal is connected to a controller, and the controller is connected to the fan 500 signal. When the air pressure inside the car 200 is lower than the preset value, the controller controls the fan 500 to start, and when the air pressure inside the car 200 is higher than the preset value, the controller controls the fan 500 to stop; so that the interior of the car 200 always maintains a slightly positive pressure state. The controller is connected to the fire alarm signal, which includes a smoke sensor and a temperature sensor. Fire alarms are installed inside the elevator shaft 100 and the car 200. Emergency lighting and communication equipment are installed inside the car 200. The emergency lighting and communication equipment are connected to the controller signal, and the controller is connected to the drive component 900 signal. The fire alarm monitors whether there is a fire in the elevator shaft 100 and the car 200. When a fire occurs, the emergency lighting and communication equipment are started by the controller. At the same time, the drive component 900 and the fan 500 are started.

[0037] A mounting cover 400 is fixedly installed on the top of the car 200, and a mounting cavity is formed between the mounting cover 400 and the top of the car 200. A through slot is provided on the top of the car 200, and the car 200 is connected to the mounting cavity through the through slot. A dust screen 600 is fixedly installed at the bottom of the mounting cavity, and a dust scraping assembly 700 is provided on the top of the dust screen 600. A dust exhaust assembly 800 is provided on the left side of the dust scraping assembly 700. A fan 500 is fixedly installed on the right side of the mounting cover 400, and air is introduced into the mounting cavity through the fan 500, and then the air enters the interior of the car 200 through the through slot on the top of the car 200, so that the interior of the car 200 is in a slightly positive pressure state. A driving assembly 900 is provided on the top of the mounting cover 400. An activated carbon filter plate 1000 is fixedly installed in the through slot on the top of the car 200, and a photocatalyst filter assembly 1100 is fixedly installed on the top wall of the car 200. The air is filtered by the dust screen 600 , the activated carbon filter plate 1000 and the photocatalyst filter assembly 1100 to prevent smoke and toxic gases from entering the elevator car 200 .

[0038] See also Figure 3 and Figure 5-Figure 7The dust scraping assembly 700 includes a partition plate 701 fixed in an array on the right inner wall of the mounting cover 400, and a dust accumulation groove is formed between the partition plates 701. The bottom of the partition plate 701 fits on the top of the dust screen 600. Therefore, after the dust screen 600 blocks the solid particles in the air, the solid particles are trapped in the dust accumulation groove. Two groups of guide rods 705 are fixedly installed on the right inner wall of the mounting cover 400, and an arched sleeve plate 703 is slidably connected to the guide rod 705. Two circular holes are formed on the surface of the arched sleeve plate 703, and the arched sleeve plate 703 is slidably connected to the guide rod 705 through the circular holes. A scraper 702 is slidably connected inside the arched sleeve plate 703, and a spring 704 is fixedly installed between the top of the scraper 702 and the top wall of the arched sleeve plate 703. Due to the elasticity of the spring 704, the scraper 702 has a tendency to move downward relative to the arched sleeve plate 703. The scraper plate 702 has a bottom array of strip grooves, which correspond to the spacer plates 701 one by one, and the spacer plates 701 pass through the strip grooves.

[0039] An annular groove 706 is provided on the front and rear side walls of the mounting cover 400, and mounting holes are provided at both ends of the scraper 702. A sliding post 707 is slidably connected in the mounting hole, and a spring 708 is fixedly installed between the inner wall of the mounting hole and the sliding post 707. The sliding post 707 slides counterclockwise along the annular groove 706, so that the scraper 702 moves counterclockwise under the guidance of the annular groove 706, and the arched sleeve 703 moves back and forth along the guide rod 705. When the arched sleeve 703 moves from right to left, the scraper 702 fits on the top of the dust isolation net 600 and moves to the left, pushing the solid particles inside the dust storage groove to the left, preventing too many solid particles from adhering to the middle of the dust isolation net 600, and ensuring the filtering effect of the dust isolation net 600 on the air. When the arched sleeve 703 moves from left to right, the scraper 702 is pulled out of the dust storage groove, preventing the scraper 702 from pushing the solid particles in the dust storage groove to the right.

[0040] The annular groove 706 includes a lower horizontal groove 7061, an inclined groove 1 7062, an upper horizontal groove 7063 and an inclined groove 2 7064. The lower horizontal groove 7061, the inclined groove 1 7062, the upper horizontal groove 7063 and the inclined groove 2 7064 are connected in a counterclockwise direction to form a ring. An inclined plate 7065 is fixedly installed in the left end of the lower horizontal groove 7061. The thickness of the inclined plate 7065 gradually increases from right to left. The left end of the inclined plate 7065 is inclined, and the left end of the inclined plate 7065 is flush with the right side wall of the inclined groove 1 7062. When the slide post 707 slides along the lower horizontal groove 7061, the scraper 702 is attached to the top of the dust screen 600 for scraping; when the slide post 707 slides along the upper horizontal groove 7063, the scraper 702 is located above the partition plate 701; and when the slide post 707 slides along the surface of the inclined plate 7065, it is squeezed by the inclined plate 7065, so that the slide post 707 moves into the installation hole of the scraper 702, and the second spring 708 is squeezed and contracted. When the slide post 707 slides to the bottom of the inclined groove 1 7062, the slide post 707 pops out under the elastic action of the second spring 708. Thus, the slide post 707 is blocked by the left end of the inclined plate 7065, preventing the slide post 707 from sliding from left to right into the lower horizontal groove 7061, so that the slide post 707 slides upward along the inclined groove 1 7062.

[0041] See also Fig. 9 A connecting column 709 is fixedly installed on the top of the arched sleeve 703, and an escape groove 710 is opened through the top of the mounting cover 400. The connecting column 709 is slidably connected in the escape groove 710. A sealing plate 711 is fixedly installed on the top of the connecting column 709, and the sealing plate 711 covers the top opening of the escape groove 710. When the arched sleeve 703 slides left and right along the guide rod 705, the connecting column 709 slides in the escape groove 710 synchronously, and in this process, the sealing plate 711 always maintains a sealing effect on the escape groove 710.

[0042] See also Figure 8The dust exhaust assembly 800 includes an arc-shaped cover 801 fixedly installed inside the left end of the mounting cover 400, the bottom end of the arc-shaped cover 801 is attached to the top of the dust-shielding net 600, and its opening faces the left end of the partition plate 701, the left end of the partition plate 701 is provided with an arc-shaped surface, the arc center of the left end of the partition plate 701 coincides with the arc center of the arc-shaped cover 801, an inclined dust exhaust duct 802 is fixedly installed on the left side of the arc-shaped cover 801, and the inclined dust exhaust duct 802 passes through the left end of the mounting cover 400; a rotating shaft 803 is provided at the arc center of the arc-shaped cover 801, the rotating shaft 803 passes through and is rotatably connected to the mounting cover 400, and dust-pushing blades 804 are fixed to the circumferential surface array of the rotating shaft 803, and the dust-pushing blades 804 are attached to the inner wall of the arc-shaped cover 801. The rotating shaft 803 rotates to make the dust-pushing blade 804 sweep the top of the dust-shielding net 600, push the solid particles on the top of the dust-shielding net 600 to the left, and then discharge the solid particles through the inclined dust-discharging channel 802. The inclined dust-discharging channel 802 is shielded by the dust-pushing blade 804 to prevent the wind blown by the fan 500 to the inside of the installation cover 400 from being directly discharged through the inclined dust-discharging channel 802 after the scraper 702 is pulled out of the dust storage groove. Thus, the solid particles inside the dust storage groove are pushed into the opening of the arc-shaped cover 801 by the scraper 702, and then the rotating shaft 803 and the dust-pushing blade 804 rotate to discharge the solid particles.

[0043] See also Figure 3 and Fig.10 The driving assembly 900 includes an arch frame 901 fixedly mounted on the top of the mounting cover 400, an arch frame 902 fixedly mounted on the top of the arch frame 901, a motor 903 fixedly mounted on the top of the arch frame 902, and the motor 903 is connected to the controller signal, and the start and stop of the motor 903 is controlled by the controller. Thus, the driving assembly 900 is connected to the controller signal through the motor 903 and the controller signal. The output end of the motor 903 runs through the arch frame 902, and a turntable 904 is fixedly mounted on the output end of the motor 903. The top wall of the arch frame 901 is rotatably connected to the turntable 905, and the top of the mounting cover 400 is rotatably connected to the fixed pulley 906 and the fixed pulley 907, and the fixed pulley 906 and the fixed pulley 907 are vertically arranged, and the fixed pulley 906 is located in front of the fixed pulley 907. The turntable 1 904, the turntable 2 905, the fixed pulley 1 906 and the fixed pulley 2 907 are connected by an annular belt 908, which is attached to the right half of the turntable 1 904 and the turntable 2 905. The annular belt 908 extends to the left along the tangent direction of the turntable 1 904 and the turntable 2 905, and the annular belt 908 is attached to the left half of the fixed pulley 1 906 and the fixed pulley 2 907. Thus, the turntable 1 904 is driven to rotate by the motor 903, and the transmission function of the annular belt 908 drives the turntable 2 905, the fixed pulley 1 906 and the fixed pulley 2 907 to rotate.

[0044] A push post 909 is fixedly installed at the eccentric position of the bottom of the second turntable 905, and a guide frame 910 is fixedly installed at the center of the top of the sealing plate 711. The guide frame 910 and the sealing plate 711 are perpendicular to each other, and the push post 909 is slidably connected in the guide frame 910. The second turntable 905 rotates, driving the push post 909 to make a circular motion. While the push post 909 slides in the guide frame 910, it pushes the guide frame 910 and the sealing plate 711 to move back and forth left and right, and cooperates with the connection function of the connecting post 709 to drive the arched sleeve plate 703 to move back and forth left and right along the guide rod 705.

[0045] A pulley 1 911 is coaxially fixed to the front side of the fixed pulley 1 906, and a pulley 2 912 is fixedly installed at the front end of the rotating shaft 803, and the pulley 1 911 and the pulley 2 912 are connected by a transmission belt 913. Thus, the fixed pulley 1 906 drives the rotating shaft 803 to rotate through the transmission effect of the pulley 1 911, the pulley 2 912 and the transmission belt 913.

[0046] See also Figure 4 The photocatalyst filter assembly 1100 includes a lower support cover 1101 fixedly mounted on the top wall of the car 200, a frame-shaped hollow plate 1102 fixedly mounted on the bottom of the lower support cover 1101, a decorative plate 1103 fixedly mounted on the bottom of the frame-shaped hollow plate 1102, a photocatalyst filter plate 1104 fixedly mounted in the lower support cover 1101, and a light strip 1105 fixedly mounted on the inner side wall of the lower support cover 1101. Thus, the light strip 1105 irradiates the photocatalyst filter plate 1104 with light, and the activated carbon filter plate 1000 and the photocatalyst filter plate 1104 purify the air.

[0047] When in use, the air source passes air into the filter 300 through the connecting pipe 301, and the filter 300 filters the air and allows the filtered air to enter the elevator shaft 100;

[0048] The air in the elevator shaft 100 is then transported to the interior of the installation cover 400 by the fan 500, and the air is filtered through the dust screen 600, and then purified by the activated carbon filter plate 1000 and the photocatalyst filter plate 1104, and then passes through the frame-shaped hollow plate 1102 to enter the interior of the car 200, so that the elevator shaft 100 and the interior of the car 200 are in a slightly positive pressure state;

[0049] The motor 903 drives the turntable 1 904 to rotate, and cooperates with the transmission function of the annular belt 908 to drive the turntable 2 905, the fixed pulley 1 906 and the fixed pulley 2 907 to rotate. The push column 909 performs a circular motion under the rotation of the turntable 2 905. While the push column 909 slides in the guide frame 910, it pushes the guide frame 910 to move back and forth left and right; and through the transmission function of the pulley 1 911, the pulley 2 912 and the transmission belt 913, the fixed pulley 1 906 drives the rotating shaft 803 to rotate;

[0050] During the reciprocating movement of the sealing plate 711, the arch sleeve 703 is driven to reciprocate left and right along the guide rod 705 under the connecting action of the connecting column 709; when the arch sleeve 703 moves from right to left, the sliding column 707 slides to the left along the lower horizontal groove 7061, and the scraper 702 moves to the left in contact with the top of the dust screening net 600, pushing the solid particles in the dust accumulation groove to the left; when the sliding column 707 is about to slide to the left end of the lower horizontal groove 7061, the sliding column 707 is squeezed by the inclined plate 7065, slides into the mounting hole of the scraper 702, and the spring 2 708 is squeezed and contracted; when the sliding column 707 slides to the bottom end of the inclined groove 1 7062, the sliding column 707 pops out under the elastic action of the spring 2 708. Therefore, when the arched sleeve 703 slides from left to right, the left end of the inclined plate 7065 blocks the slide post 707 and slides upward along the inclined groove 1 7062, so that the scraper 702 is gradually pulled out of the dust storage groove, and then the slide post 707 slides along the upper horizontal groove 7063 and the inclined groove 2 7064 in sequence; and after the slide post 707 slides to the bottom of the inclined groove 2 7064, the arched sleeve 703 moves to the left again, and under the elastic action of the spring 1 704, the slide post 707 slides along the lower horizontal groove 7061;

[0051] The scraper 702 pushes the solid particles in the dust storage groove to the opening of the arc cover 801, and then the rotating shaft 803 and the dust pushing blade 804 rotate to push the solid particles on the top of the dust screening net 600 to the inclined dust discharge channel 802 to discharge the solid particles.

[0052] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0053] In addition, it will be understood by those skilled in the art that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0054] It will be appreciated by those skilled in the art that, although the present invention has been described with reference to exemplary embodiments, various changes may be made and equivalents may be substituted for its elements without departing from the scope of the present invention. In addition, many modifications may be made to adapt specific circumstances or materials to the teachings of the present invention without departing from the essential scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed, but the present invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A fire-fighting elevator internal environment protection system, comprising an elevator shaft (100) and an elevator car (200), characterized in that: The elevator shaft (100) is provided with air inlets at the top and bottom, and filters (300) are installed at the air inlets, the input end of the filter (300) is connected to a connecting pipe (301), and the other end of the connecting pipe (301) is connected to an air source; A mounting cover (400) is fixedly mounted on the top of the car (200), a mounting cavity is formed between the mounting cover (400) and the top of the car (200), a through slot is provided on the top of the car (200), the car (200) is connected to the mounting cavity via the through slot, a dust screen (600) is fixedly mounted on the bottom of the mounting cavity, a dust scraping assembly (700) is arranged on the top of the dust scraping assembly (600), and a dust exhaust assembly (800) is arranged on the left side of the dust scraping assembly (700); A fan (500) is fixedly mounted on the right side of the mounting cover (400), and a driving assembly (900) is arranged on the top of the mounting cover (400); An air pressure sensor is installed inside the car (200), and the air pressure sensor is used to monitor the air pressure inside the car (200). The air pressure sensor signal is connected to a controller, and the controller is connected to the fan (500) signal. When the air pressure inside the car (200) is lower than a preset value, the controller controls the fan (500) to start, and when the air pressure inside the car (200) is higher than the preset value, the controller controls the fan (500) to stop. The controller is signal-connected to a fire alarm, the fire alarm includes a smoke sensor and a temperature sensor, the elevator shaft (100) and the elevator car (200) are both equipped with fire alarms, the elevator car (200) is equipped with emergency lighting and communication equipment, the emergency lighting and communication equipment are signal-connected to the controller, and the controller is signal-connected to the drive assembly (900); The dust scraping assembly (700) comprises partition plates (701) fixed in an array on the right inner wall of the mounting cover (400), and the bottom of the partition plates (701) is attached to the top of the dust isolation net (600); Two groups of guide rods (705) are fixedly mounted on the right inner wall of the mounting cover (400), an arched sleeve (703) is slidably connected to the guide rod (705), a scraper (702) is slidably connected inside the arched sleeve (703), a spring (704) is fixedly mounted between the top of the scraper (702) and the top wall of the arched sleeve (703), and a strip groove is arranged in an array at the bottom of the scraper (702), the strip grooves correspond to the spacer plates (701) one by one, and the spacer plates (701) pass through the strip grooves; The front and rear side walls of the mounting cover (400) are provided with an annular groove (706), both ends of the scraper (702) are provided with mounting holes, a sliding column (707) is slidably connected in the mounting hole, a second spring (708) is fixedly installed between the inner wall of the mounting hole and the sliding column (707), and the sliding column (707) slides counterclockwise along the annular groove (706); The dust exhaust assembly (800) comprises an arc-shaped cover (801) fixedly mounted inside the left end of the mounting cover (400); the bottom end of the arc-shaped cover (801) is attached to the top of the dust-isolating net (600), and its opening faces the left end of the partition plate (701); the left end of the partition plate (701) is provided with an arc-shaped surface, the arc center of the left end of the partition plate (701) coincides with the arc center of the arc-shaped cover (801); an inclined dust exhaust duct (802) is fixedly mounted on the left side of the arc-shaped cover (801), and the inclined dust exhaust duct (802) passes through the left end of the mounting cover (400); A rotating shaft (803) is provided at the arc center of the arc-shaped cover (801), and the rotating shaft (803) penetrates and is rotatably connected to the mounting cover (400). Dust-pushing blades (804) are fixed in an array on the circumferential surface of the rotating shaft (803), and the dust-pushing blades (804) are attached to the inner wall of the arc-shaped cover (801).

2. The fire elevator internal environment protection system according to claim 1, characterized in that: The annular groove (706) comprises a lower horizontal groove (7061), an inclined groove 1 (7062), an upper horizontal groove (7063) and an inclined groove 2 (7064); the lower horizontal groove (7061), the inclined groove 1 (7062), the upper horizontal groove (7063) and the inclined groove 2 (7064) are connected in a counterclockwise direction to form an annular shape; an inclined plate (7065) is fixedly installed in the left end of the lower horizontal groove (7061); the thickness of the inclined plate (7065 gradually increases from right to left; the left end of the inclined plate (7065) is inclined, and the left end of the inclined plate (7065) is flush with the right side wall of the inclined groove 1 (7062).

3. The fire elevator internal environment protection system according to claim 1, characterized in that: A connecting column (709) is fixedly mounted on the top of the arched sleeve plate (703); an escape groove (710) is provided through the top of the mounting cover (400); the connecting column (709) is slidably connected in the escape groove (710); a sealing plate (711) is fixedly mounted on the top of the connecting column (709); and the sealing plate (711) covers the top opening of the escape groove (710).

4. The fire elevator internal environment protection system according to claim 3 is characterized in that: The driving assembly (900) comprises an arch frame 1 (901) fixedly mounted on the top of the mounting cover (400), an arch frame 2 (902) fixedly mounted on the top of the arch frame 1 (901), a motor (903) fixedly mounted on the top of the arch frame 2 (902), an output end of the motor (903) passing through the arch frame 2 (902), and a turntable 1 (904) fixedly mounted on the output end of the motor (903); The top wall of the arch frame 1 (901) is rotatably connected to a turntable 2 (905), and the top of the mounting cover (400) is rotatably connected to a fixed pulley 1 (906) and a fixed pulley 2 (907), wherein the fixed pulley 1 (906) and the fixed pulley 2 (907) are vertically arranged, and the fixed pulley 1 (906) is located in front of the fixed pulley 2 (907); The turntable 1 (904), the turntable 2 (905), the fixed pulley 1 (906) and the fixed pulley 2 (907) are connected by an annular belt (908), the annular belt (908) is attached to the right half of the turntable 1 (904) and the turntable 2 (905), the annular belt (908) extends to the left along the tangent direction of the turntable 1 (904) and the turntable 2 (905), and the annular belt (908) is attached to the left half of the fixed pulley 1 (906) and the fixed pulley 2 (907); A push column (909) is fixedly installed at an eccentric position at the bottom of the second rotating disk (905), and a guide frame (910) is fixedly installed at the center of the top of the sealing plate (711). The guide frame (910) and the sealing plate (711) are perpendicular to each other, and the push column (909) is slidably connected in the guide frame (910).

5. The fire elevator internal environment protection system according to claim 4 is characterized in that: A belt pulley 1 (911) is coaxially fixed to the front side of the fixed pulley 1 (906), and a belt pulley 2 (912) is fixedly installed at the front end of the rotating shaft (803). The belt pulley 1 (911) and the belt pulley 2 (912) are connected via a transmission belt (913).

6. The fire elevator internal environment protection system according to claim 1, characterized in that: An activated carbon filter plate (1000) is fixedly installed in the through groove at the top of the car (200), and a photocatalyst filter assembly (1100) is fixedly installed on the top wall of the car (200).

7. The fire elevator internal environment protection system according to claim 6, characterized in that: The photocatalyst filter assembly (1100) comprises a lower support cover (1101) fixedly mounted on the top wall of the car (200); a frame-shaped hollow plate (1102) is fixedly mounted on the bottom of the lower support cover (1101); a decorative plate (1103) is fixedly mounted on the bottom of the frame-shaped hollow plate (1102); a photocatalyst filter plate (1104) is fixedly mounted inside the lower support cover (1101); and a light strip (1105) is fixedly mounted on the inner side wall of the lower support cover (1101).

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