Heavy-load hydraulic elevator

Abstract

The utility model relates to a heavy-load hydraulic elevator which comprises a car, an air purification module and an auxiliary purification module, the air purification module comprises a vortex separator and a folding filter screen which are sequentially arranged in the module, ultraviolet disinfection lamp tubes are arranged in the auxiliary purification module in the circumferential direction, and a reflecting plate is arranged at the bottom of each ultraviolet disinfection lamp tube. The air purification module is connected with the auxiliary purification module through a first exhaust pipeline, the auxiliary purification module is connected with the lift car through a second exhaust pipeline, and particulate matter grading interception and microorganism efficient inactivation are achieved through the integrated vortex separator, the foldable filter screen and the double-row ultraviolet sterilization module. And meanwhile, the folding filter screen is automatically unfolded / folded through the synchronous belt sliding rail mechanism, so that the risk of manual intervention and secondary pollution is reduced.

Description

Technical Field

[0001] This utility model relates to the field of elevator air purification technology, and in particular to a heavy-duty hydraulic elevator. Background Technology

[0002] With the acceleration of urbanization, elevators, as core equipment in vertical transportation, directly impact passenger health due to their internal air quality. Studies show that PM2.5 concentrations inside elevators can be 2-3 times higher than outdoors, and total bacterial counts exceed hygiene standards by more than 5 times, easily leading to respiratory diseases with prolonged exposure. Furthermore, in the context of epidemic prevention and control, elevators have become high-risk areas for virus transmission. Traditional ventilation systems can only exchange air and cannot effectively disinfect, posing a significant public health hazard. Current elevator purification technologies, such as the one disclosed in patent CN221821611U, which uses multi-layer filters (HEPA, activated carbon, etc.) combined with an exhaust fan to improve air quality, still have the following drawbacks: 1. Relying on physical filtration, they lack ultraviolet or ozone disinfection modules, failing to inactivate bacteria, viruses, and other microorganisms, resulting in substandard hygiene and safety; additionally, the operation of the filters is cumbersome and prone to secondary pollution. Therefore, there is an urgent need for a systematic air purification elevator that integrates high-efficiency purification and intelligent disinfection to improve the overall air quality assurance capabilities of elevators. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the limitations of existing elevator purification systems, the purpose of this utility model is to provide a heavy-duty hydraulic elevator that integrates a vortex separator, a foldable filter, and a dual-row ultraviolet disinfection module to achieve graded interception of particulate matter and efficient inactivation of microorganisms. This solves the problems of low efficiency of traditional elevator purification systems with a single filtration mode, which is unable to cope with the combined pollution of PM2.5, odors, and pathogens, posing public health risks. At the same time, the foldable filter automatically unfolds / retracts via a synchronous belt slide rail mechanism, and the quick-connect connector enables tool-free disassembly and assembly, reducing manual intervention and the risk of secondary pollution. This also solves the problems of strong filter dependence, high maintenance costs, and frequent replacement due to large particles clogging the filter element.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: A heavy-duty hydraulic elevator includes a car. An air purification module is integrated at the top of the car. The air purification module includes a vortex separator and a folded filter sequentially arranged inside the module. An auxiliary purification module is fixedly connected to the bottom of the car. Ultraviolet disinfection lamps are arranged circumferentially inside the auxiliary purification module, and a reflector is provided at the bottom of each ultraviolet disinfection lamp. The air purification module and the auxiliary purification module are connected via a first exhaust duct, and the auxiliary purification module and the top of the car are connected via a second exhaust duct. Both the first and second exhaust ducts are embedded in the side wall of the car. The air purification module has a vortex separator at the upper part and a folded filter at the lower part, which can perform preliminary purification of the air entering the car. Large particulate impurities are first removed by the vortex separator, and then fine particulate matter is filtered by the folded filter, improving the air quality in the car.

[0007] The auxiliary purification module is equipped with ultraviolet disinfection lamps arranged circumferentially inside, which can kill bacteria, viruses and other microorganisms in the air, further improving air quality; the reflector can reflect ultraviolet rays, improving their utilization rate and sterilization effect.

[0008] It should be noted that the foldable filter here is in a retracted state when not in use, which means that the air purification module and auxiliary purification module are not always working. They can be connected to a terminal and controlled to operate. When in working mode, the foldable filter will unfold.

[0009] The first exhaust duct connects the air purification module and the auxiliary purification module, allowing the pre-purified air to enter the auxiliary module for sterilization. The second exhaust duct connects the auxiliary module and the top of the car, exhausting clean air to form a complete air circulation and purification system, maintaining good air quality inside the car. Embedding the exhaust ducts into the side wall of the car saves space and makes the internal structure compact, facilitating smooth airflow, reducing air resistance within the ducts, and improving system operating efficiency.

[0010] Preferably, the vortex separator employs a multi-layer centrifugal design, with a circumferentially fixed spiral guide plate inside. Both the spiral guide plate and the reflector plate have periodically wave-shaped biomimetic micro-nano composite textures arranged along the airflow direction. The reflector plate is positioned along the length of the ultraviolet disinfection lamp. The multi-layer centrifugal design and the internally fixed spiral guide plate create a high-speed rotating vortex within the separator, using centrifugal force to throw particles against the inner wall for separation. The biomimetic micro-nano composite textures on the guide plate surface, resembling the texture of a lotus leaf, enhance airflow stability, improve separation efficiency, and provide self-cleaning, reducing particle adhesion. Positioning the reflector plate along the length of the ultraviolet disinfection lamp concentrates ultraviolet light onto a specific area, forming a uniform and effective disinfection zone, ensuring that airborne microorganisms are fully exposed to ultraviolet light, thus enhancing the sterilization and disinfection effect.

[0011] Preferably, the foldable filter screen automatically unfolds and retracts via a moving mechanism. This mechanism includes slide rails symmetrically arranged at the bottom of the inner walls on both sides of the module. Synchronous pulleys are located at both ends of the slide rails and connected by a synchronous belt. A slider with ball bearings is mounted on the slide rail, and the slider fits tightly against the outer side of the synchronous belt. Two corners on one side of the foldable filter screen engage with the slider, while the other side is fixedly connected to the inner wall of the module via a bracket. The foldable filter screen automatically unfolds and retracts via this moving mechanism, allowing for flexible adjustment of the filter screen's state as needed. When unfolded, it increases the filtration area and improves filtration efficiency; when retracted, it facilitates operation and maintenance, ensuring smooth movement of the filter screen.

[0012] Furthermore, two corners on one side of the folded filter engage with the slider, while the other side is fixedly connected to the inner wall of the module via a bracket. This connection method ensures stability when the filter is unfolded and retracted, and the slider fits tightly against the synchronous belt, ensuring smooth movement of the slider driven by the synchronous belt, thus realizing the unfolding and retraction of the filter. A silicone sealing strip is axially positioned along the edge of the filter, ensuring a tight fit against the inner wall of the module after unfolding, preventing air leakage from the filter edge and improving filtration efficiency.

[0013] Preferably, a silicone sealing strip is provided axially along the edge of the folded filter screen, and after the folded filter screen is unfolded, the silicone sealing strip fits tightly against the inner wall of the module.

[0014] Preferably, the air purification module has an air inlet at its top, which is connected to the top of the vortex separator via a flange. A filter is installed at the air inlet. The first exhaust duct is fixedly connected to the top of one side of the auxiliary purification module, and a first one-way valve is installed at the connection point. An air outlet is located at the top of the car, and it is fixedly connected to the second exhaust duct, where a second one-way valve is installed. The filter at the air inlet pre-filters the air, protecting downstream equipment. The one-way valve at the exhaust duct connection prevents backflow of air, maintaining the normal operation of the air purification system. The one-way valve only allows air to flow in one direction, preventing backflow of air when the elevator is stopped, which could lead to contaminant recirculation or equipment damage, ensuring the normal operation of the system.

[0015] Preferably, both the air purification module and the auxiliary purification module are equipped with evenly distributed compression springs at the connection points with the car, and an elastic rubber pad is laid flat at the bottom of the auxiliary purification module. The compression springs are used because elevator operation generates vibrations that could damage the precision components within the purification and auxiliary modules. The springs absorb and disperse vibration energy, allowing the components to operate in a stable environment. The elastic rubber pads are elastic and wear-resistant, reducing the impact of friction and vibration on the equipment.

[0016] Preferably, an air intake is provided on the side wall of the car, and the air intake is connected to a third-row air duct via a flange. A centrifugal exhaust fan is installed at the connection between the third-row air duct and the air intake. The centrifugal exhaust fan generates centrifugal force to draw air in through a high-speed rotating impeller. The guide fins are inclined towards the air intake side, causing the air to flow along the direction of the fins when it enters, forming an orderly airflow, avoiding turbulence and resistance, and improving the efficiency of the exhaust system. The centrifugal exhaust fan uses existing technology, therefore it will not be described in detail.

[0017] Preferably, the side of the air intake closest to the interior of the car is covered with an airflow guide hood, and the inner wall of the guide hood is provided with guide fins, which are inclined toward the side of the air intake.

[0018] Furthermore, the air intake on the side wall of the car draws air out through a centrifugal exhaust fan and sends it to the air purification module for purification, thus circulating and purifying the air inside the car; the airflow guide hood and guide fins guide the air smoothly into the air intake, improving the exhaust efficiency and reducing air resistance and turbulence.

[0019] (III) Beneficial Effects

[0020] (1) By integrating a vortex separator, a foldable filter, and a dual-row ultraviolet disinfection module, the system achieves efficient air purification and microbial inactivation in elevators. The vortex separator employs a multi-layer centrifugal design and a spiral guide plate, combined with a biomimetic micro-nano composite texture, to intercept large particles in stages and enhance self-cleaning capabilities. The foldable filter automatically unfolds / retracts via a synchronous belt slide rail mechanism, allowing for adjustment of the filtration area as needed, reducing the frequency of manual maintenance. Simultaneously, a silicone sealing strip prevents air leakage, ensuring filtration efficiency. The auxiliary purification module features circumferentially arranged ultraviolet disinfection lamps and reflectors, utilizing multi-angle ultraviolet reflection to extend the exposure time of microorganisms, achieving efficient disinfection. Exhaust ducts are embedded in the side wall of the car, optimizing the spatial layout and reducing airflow resistance. Furthermore, the centrifugal exhaust fan and guide fins work together to form an orderly air circulation, effectively expelling polluted air. This system comprehensively solves the problems of low purification efficiency, insufficient disinfection, and high maintenance costs in traditional elevators, significantly improving the hygiene and safety of elevator air quality and its level of intelligence. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the present invention;

[0022] Figure 2 This is a structural diagram of the air purification module in this utility model;

[0023] Figure 3 This is a structural diagram of the auxiliary purification module in this utility model;

[0024] Figure 4 This is a structural diagram of the moving mechanism in this utility model;

[0025] Figure 5 This is a structural diagram of the guide cover in this utility model.

[0026] In the diagram: 1-Car, 100-Air outlet, 11-Air intake, 111-Third exhaust duct, 112-Centrifugal exhaust fan, 113-Guide cover, 114-Heat-conducting fins, 2-Air purification module, 20-Air inlet, 20a-Filter, 21-Vortex separator, 210-Spiral guide plate, 22-Folded filter, 3-Auxiliary purification module, 31-Ultraviolet disinfection lamp, 32-Reflector, 4-First exhaust duct, 42-First one-way valve, 5-Second exhaust duct, 52-Second one-way valve, 7-Moving mechanism, 71-Slide rail, 72-Synchronous pulley, 73-Synchronous belt, 74-Slider, 75-Fixed bracket. Detailed Implementation

[0027] The following will refer to the appendix in the embodiments of this utility model. Figure 1 -Appendix Figure 5 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example 1: As Figure 1As shown, the first specific embodiment of this utility model provides a heavy-duty hydraulic elevator, including a car 1. An air purification module 2 is integrated at the top of the car 1. The air purification module 2 includes a vortex separator 21 and a folded filter 22 sequentially arranged inside the module. An auxiliary purification module 3 is fixedly connected to the bottom of the car 1. Ultraviolet disinfection lamps 31 are arranged circumferentially inside the auxiliary purification module 3, and each ultraviolet disinfection lamp 31 has a reflector 32 at its bottom. The air purification module 2 and the auxiliary purification module 3 are connected by a first exhaust duct 4, and the auxiliary purification module 3 is connected to the top of the car 1 by a second exhaust duct 5. Both the first exhaust duct 4 and the second exhaust duct 5 are embedded in the side wall of the car 1. The air purification module 2 is located in the interlayer space formed by the reinforcing rib and the top plate fixed at the top of the car 1. The length of the auxiliary purification module 3 is equal to the length of the car 1, covering the bottom of the car 1. The first exhaust duct 4 and the second exhaust duct 5 are respectively embedded in the steel structure of the side walls of the car 1. Both the air purification module 2 and the auxiliary purification module 3 are fixed to the car by bolts. The ultraviolet disinfection lamps 31 are installed at both the top and bottom of the auxiliary purification module 3. That is, an ultraviolet disinfection lamp 31 is installed around the top of the auxiliary purification module 3, and an ultraviolet disinfection lamp 31 is also installed around the bottom. The lamps are horizontally arranged, and a reflector 32 is installed below each ultraviolet disinfection lamp. The reflector 32 can cover and reflect the light of each ultraviolet disinfection lamp, ensuring that the light can illuminate the entire interior of the auxiliary purification module 3.

[0029] The vortex separator 21 adopts a multi-layer centrifugal design. Internally, a circumferentially fixed spiral guide plate 210 is used. Both the spiral guide plate 210 and the reflector plate 32 have periodically wave-shaped biomimetic micro-nano composite textures arranged along the airflow direction. The reflector plate 32 is positioned along the length of the ultraviolet disinfection lamp tube 31. Specifically, the vortex separator 21 employs an inner and outer vortex plate design. The spiral guide plate 210 optimizes separation efficiency; this is existing technology and will not be described in detail. It is important to note that the biomimetic micro-nano composite texture resembles the naturally formed patterns on the surface of a lotus leaf, including micron-level protrusions and nano-level grooves. The protrusions increase surface roughness, while the grooves form a secondary adsorption interface. The surface arrangement of the spiral guide plate 210 allows the micron-level protrusions to capture large particles through inertial collisions, while the nano-grooves adsorb ultrafine particles through van der Waals forces. The wave-shaped arrangement guides the airflow along the texture direction, reducing wall friction resistance. The textured surface of the reflector plate 32 scatters ultraviolet light into multi-angle illumination, extending the residence time of air in the disinfection area; while the nanogrooves form a superhydrophobic surface, preventing microbial adhesion. Femtosecond lasers can be used to etch the textures onto the surfaces of the guide plate and reflector plate.

[0030] The foldable filter screen 22 is automatically unfolded and retracted via a moving mechanism 7. The moving mechanism 7 includes slide rails 71 symmetrically arranged at the bottom of the inner walls on both sides of the module. Synchronous pulleys 72 are set at both ends of the slide rails 71, and the two synchronous pulleys 72 are connected by a synchronous belt 73. A slider 74 with ball bearings is set on the slide rails 71, and the slider 74 is tightly fitted to the outer side of the synchronous belt 73. Two corners on one side of the foldable filter screen 22 are engaged with the slider 74, and the other side is fixedly connected to the inner wall of the module via a fixing bracket 75. The folded filter 22 is located below the vortex separator 21. After the air is filtered by the centrifugal force of the vortex separator 21, the moving mechanism 7 drives the folded filter 22 to unfold for further filtration. The main movement is achieved by a stepper motor driving one of the synchronous pulleys 72 to rotate. The rotation of the synchronous pulley 72 drives the synchronous belt 73 to rotate, and the synchronous pulleys 72 at both ends rotate synchronously. At this time, under the action of the synchronous belt 73, the slider 74 that is in contact with it can slide along the length of the slide rail 71, thereby driving the folded filter 22 to unfold to one side. The other side of the folded filter 22 is fixed to the inner wall of the module by a fixed bracket 75. The folded filter 22 and the fixed bracket 75 are connected by a quick-connect connector, allowing the filter to be disassembled when needed. Similarly, the connection between the folded filter 22 and the sliders 74 on both sides is also secured by a quick-connect connector for easy replacement and disassembly of the filter. It should be noted that an openable door panel is required on one side of the air purification module 2 to facilitate filter replacement. The two slide rails 71 are symmetrically arranged and embedded in the inner walls of the two sides of the module. Each slide rail 71 is equipped with a stepper motor. The output end of the stepper motor is connected to one of the synchronous pulleys 72 at both ends of the slide rail 71 to drive the synchronous pulley 72 to rotate.

[0031] It is important to note that the folded filter 22 has a silicone sealing strip around its circumference. When the folded filter 22 is unfolded, the silicone sealing strip fits tightly against the inner wall of the module. The folded filter 22 moves along the length of the air purification module 2. The folded filter 22 is horizontally positioned at the bottom of the air purification module 2. To ensure a tight fit, the fixing bracket 75 must be embedded in the inner wall of the module so that the silicone sealing strip on the outer ring of the unfolded folded filter 22 can fit tightly against the inner walls of the module, forming a relatively sealed space.

[0032] Air purification module 2 has an air inlet 20 at its top, which is connected to the top of vortex separator 21 via a flange. A filter 20a is installed at the air inlet 20. The first exhaust duct 4 is fixedly connected to the top of one side of auxiliary purification module 3, and a first one-way valve 42 is installed at the connection point. An air outlet 10 is installed at the top of the car 1, which is fixedly connected to the second exhaust duct 5, and a second one-way valve 52 is installed at the connection point. The filter 20a is bolted to the air inlet 20 and is located on the outer side of the top of air purification module 2. The filter 20a is removable and replaceable. One end of the first exhaust duct 4 is connected to the bottom of one side of air purification module 2 via a flange, and the other end is fixedly connected to the top of one side of auxiliary purification module 3 via a flange. A first one-way valve 42 is installed inside the duct near the auxiliary purification module 3, allowing air purified by air purification module 2 to enter auxiliary purification module 3 for disinfection. However, the disinfected air cannot enter the first exhaust duct 4; that is, the clean air after disinfection can only enter the second exhaust duct 4. The exhaust duct 5 enters the car 1 through the second exhaust duct 5. Similarly, one end of the second exhaust duct 5 is fixedly connected to the top of the other side of the auxiliary purification module 3 by a flange, and the other end is fixedly connected to the air outlet 10 on the top of the car 1 by a flange. A second one-way valve 52 is installed on the side of the duct near the air outlet 10. The second one-way valve can ensure that the clean air after disinfection can enter the car 1, while the air inside the car 1 will not enter the second exhaust duct 5. That is, it cuts off the possibility of air backflow, ensures that the airflow path remains unchanged, effectively purifies the air, and reduces the risk of infection.

[0033] It is important to note that evenly distributed compression springs are installed at the connection points between the air purification module 2 and the auxiliary purification module 3 and the car 1. An elastic rubber pad is laid flat at the bottom of the auxiliary purification module 3. The compression springs are evenly distributed at the contact points between the air module 2 and the car 1, and between the auxiliary purification module 3 and the car 1, providing effective cushioning. The elastic rubber pad prevents the auxiliary purification module 3 from directly contacting the bottom surface, effectively reducing damage to the auxiliary purification module 3.

[0034] An air intake 11 is provided on the side wall of the car 1. The air intake 11 is connected to the third-row air duct 111 via a flange. A centrifugal exhaust fan 112 is provided at the connection between the third-row air duct 111 and the air intake 11. The centrifugal exhaust fan 112 draws in the stale air in the car, separates the stale air by centrifugal force, and then discharges it outside the car 1 through the third-row air duct 111.

[0035] The side of the air intake 11 closest to the interior of the car 1 is covered by a guide shroud 113. Guide fins 114 are provided on the inner wall of the guide shroud 113, and these fins are inclined towards the air intake 11. The guide shroud 113 is located inside the car 1 and is shaped like a trumpet, circumferentially surrounding the entire air intake 11. The guide fins 114 are circumferentially surrounding the guide shroud 113 and inclined towards one side of the air intake 11.

[0036] In this device, the airflow path is as follows: external air enters the air purification module 2 through the air inlet 20, first comes into contact with the filter 20a for primary filtration, and then directly enters the vortex separator 21. After secondary filtration in the vortex separator 21, it descends from the bottom of the vortex separator 21 to the pleated filter 22 for further filtration. After being filtered by the pleated filter 22, it enters the first exhaust duct 4 and is then transported through the first exhaust duct 4 to the auxiliary purification module 3. In the auxiliary purification module 3, the circumferentially distributed ultraviolet disinfection lamps 31 disinfect the air. The clean air after treatment enters the car 1 through the second exhaust duct 5.

[0037] The polluted air inside the car is guided by the guide fins 114 on the inner wall of the guide cover 113, enters the centrifugal exhaust fan 112 through the air inlet 11 and is then discharged outside the car through the third exhaust duct 111 after centrifugal action.

[0038] Working Principle: During operation, outside air enters the system through the air inlet 20 of the air purification module at the top of the car 1. The filter 20a at the air inlet 20 initially intercepts large particulate pollutants (such as dust and pollen). The air then enters the vortex separator 21, where high-speed rotation generates centrifugal force, throwing medium and large particles (such as PM10 and hair) against the inner wall of the separator, where they eventually settle to the bottom. The pre-purified air continues to flow downwards, passing through the folded filter 22, which further intercepts fine particles such as PM2.5. Subsequently, the moving mechanism 7 drives the synchronous wheel 72 to rotate via a stepper motor. The rotation of the synchronous wheel 72 drives the synchronous belt 73 to rotate, which in turn drives the slider 74 to move linearly along the slide rail 71, automatically unfolding or retracting the filter to ensure that the filtration area matches the airflow requirements. After the folded filter 22 is unfolded, its edge silicone sealing strip 220 fits tightly against the inner wall of the module to prevent unfiltered air leakage.

[0039] Subsequently, the air, after primary purification, enters the auxiliary purification module 3 at the bottom through the first exhaust duct 4. Within the auxiliary purification module 3, the air is irradiated by circumferentially distributed ultraviolet (UV) disinfection lamps 31. Short-wave UV light destroys the DNA / RNA of microorganisms, achieving highly efficient sterilization. The reflector plate 32 below the UV disinfection lamps 31 is positioned along the length of the lamp tube. Through the diffuse reflection characteristics of its biomimetic micro-nano composite texture, it extends the irradiation path of the UV light in the air, improving the disinfection coverage. Here, a first one-way valve 42 is installed at the connection point of the first exhaust duct 4 to ensure unidirectional airflow and prevent backflow of pollutants.

[0040] The clean air after disinfection is delivered to the air outlet 10 at the top of the car through the second exhaust duct 5, and evenly released into the car interior. A second one-way valve 52 is installed at the end of the second exhaust duct to prevent backflow of polluted air from outside.

[0041] The polluted air (such as CO2 and odors) inside the car 1 is actively drawn in by the centrifugal exhaust fan 112 and enters the centrifugal exhaust fan 112 through the air inlet 11. During the suction process, the guide cover 113 covering the air inlet 11 guides the air smoothly into the air duct through the guide fins 114 on the inner wall, reducing the suction loss caused by turbulence. After the polluted air is acted on inside the centrifugal fan 112, it is discharged outside the car through the third exhaust air duct 111.

Claims

1. A heavy-duty hydraulic elevator, comprising a car (1), characterized in that, The top of the car (1) integrates an air purification module (2) and an auxiliary purification module (3) located at the bottom of the car (1); The air purification module (2) includes a vortex separator (21) disposed at the top of the module and a folded filter (22) disposed at the bottom of the module; The auxiliary purification module (3) is provided with ultraviolet disinfection lamps (31) arranged circumferentially inside, and each ultraviolet disinfection lamp (31) is provided with a reflector (32) at the bottom. The air purification module (2) and the auxiliary purification module (3) are connected by a first exhaust duct (4). The auxiliary purification module (3) and the top of the car (1) are connected by a second exhaust duct (5). The first exhaust duct (4) and the second exhaust duct (5) are each provided with a guide plate (6) at intervals. The guide plate (6) is inclined along the airflow direction.

2. The heavy-duty hydraulic elevator according to claim 1, characterized in that, The vortex separator (21) adopts a multi-layer centrifugal design, with a spiral guide plate (210) fixed circumferentially inside. The surfaces of the spiral guide plate (210) and the reflector plate (32) are provided with biomimetic micro-nano composite textures arranged in a periodic wave shape along the airflow direction. The reflector plate (32) is arranged along the length direction of the ultraviolet disinfection lamp tube (31).

3. A heavy-duty hydraulic elevator according to claim 1, characterized in that, The foldable filter screen (22) is automatically unfolded and retracted via a moving mechanism (7). The moving mechanism (7) includes slide rails (71) symmetrically arranged at the bottom of the inner walls on both sides of the module. Synchronous wheels (72) are provided at both ends of the slide rails (71), and the two synchronous wheels (72) are connected by a synchronous belt (73). A slider (74) with ball bearings is provided on the slide rails (71), and the slider (74) is in close contact with the outer side of the synchronous belt (73). Two corners on one side of the foldable filter screen (22) are engaged with the slider (74), and the other side is fixedly connected to the inner wall of the module via a fixed bracket (75).

4. A heavy-duty hydraulic elevator according to claim 1, characterized in that, The air purification module (2) is provided with an air inlet (20) at the top. The air inlet (20) is connected to the top of the vortex separator (21) through a flange. A filter screen (20a) is provided at the air inlet (20). The first exhaust pipe (4) is fixedly connected to the bottom end of one side of the auxiliary purification module (3). A first one-way valve (42) is provided at the connection. The car (1) is provided with an air outlet (100) at the top. The air outlet (100) is fixedly connected to the second exhaust pipe (5). A second one-way valve (52) is provided at the connection.

5. A heavy-duty hydraulic elevator according to claim 1, characterized in that, The side wall of the car (1) is provided with an air intake (11), which is connected to the third row of air ducts (111) through a flange. A centrifugal exhaust fan (112) is provided at the connection between the third row of air ducts (111) and the air intake (11).

6. A heavy-duty hydraulic elevator according to claim 5, characterized in that, The air intake (11) is covered by a guide cover (113) on the side near the interior of the car (1). The inner wall of the guide cover (113) is provided with guide fins (114), which are inclined toward the side of the air intake (11).

Images