Automatic drainage device for elevator pit

Abstract

The utility model discloses an elevator pit automatic drainage device which comprises a detection mechanism, a fixing seat and a water pumping mechanism, the detection mechanism is arranged on an elevator pit and used for detecting whether water is accumulated in a water accumulation pit, the bottom end of the fixing seat is fixedly connected with the top end of the elevator pit, a moving cavity is formed in the fixing seat, and the water pumping mechanism is arranged in the fixing seat and used for pumping water in the moving cavity. The device further comprises a water level detection piece used for detecting the water level in the water sump, the bottom end of the water level monitor and the bottom end of the water pumping head are located on the same horizontal line, a through hole matched with the connecting rod is formed in the bottom of the mounting base, and the cross section area of the through hole is smaller than that of the moving groove. The automatic drainage device for the elevator pit is used for solving the problems that accumulated water is stored in a drainage pipeline for a long time, the inner wall of the pipeline is in a humid state for a long time, the corrosion phenomenon is easily caused, and the service life of the pipeline is shortened.

Description

Technical Field

[0001] This utility model relates to the field of elevator drainage technology, specifically to an automatic drainage device for elevator pits. Background Technology

[0002] Currently, elevators are widely used in various buildings such as residential buildings and shopping malls. However, due to poor waterproofing of the building pit, or water pipe rupture, flooding during heavy rain, etc., water enters the elevator shaft, causing serious water accumulation in the elevator pit. This has become a technical problem that the elevator industry urgently needs to solve.

[0003] In the existing technology, the way to deal with water accumulation in the elevator pit is usually for the user or property management to notify the elevator maintenance personnel. When the water accumulation is severe, the bottom floor door of the elevator is opened and a water pump is temporarily installed to pump out the water. This method is not only time-consuming and labor-intensive, but also results in a large number of elevator parts being damaged due to water immersion before the water accumulation is dealt with, causing economic losses and posing safety hazards to the operation of the elevator.

[0004] A search revealed that Chinese patent CN216713300U discloses a highly efficient automatic drainage device for elevator pits. Its working principle is roughly as follows: when the built-in collection chamber contains water, the float moves upward under the buoyancy of the water. This causes the connecting push rod to simultaneously move the impact block upward within the control chamber, and when it contacts the movable end of the trigger switch, the trigger switch transmits a signal to the drainage pump, thus starting the pump. The drainage pump then extracts the water from the built-in collection chamber through the drainage pipe. However, since one end of the drainage pipe is connected to the bottom of the elevator pit, when water accumulates in the pit, not only does water accumulate in the pit, but it also enters the drainage pipe, with the water levels in both being the same. Because the float only triggers the switch after moving upward a certain distance, water continues to accumulate in the drainage pipe. Prolonged water accumulation keeps the inner wall of the pipe constantly damp, easily causing corrosion and reducing the pipe's lifespan. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an automatic drainage device for elevator pits, which solves the problem mentioned in the background art of water accumulation in drainage pipes over a long period of time, causing the inner wall of the pipe to remain damp, which easily leads to corrosion and reduces the service life of the pipe.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic drainage device for elevator pits, applied to elevator pits, wherein a water accumulation pit is provided in the elevator pit, and the device further includes a detection mechanism, a fixed base, and a pumping mechanism. The detection mechanism is disposed on the elevator pit and is used to detect whether there is water accumulation in the water accumulation pit. The bottom end of the fixed base is fixedly connected to the top end of the elevator pit, and a movable cavity is provided in the fixed base. The pumping mechanism is disposed in the fixed base and is used to pump out the water accumulation in the water accumulation pit.

[0009] To detect whether there is water in the sump, and to pump out the water when the water level reaches a dangerous level, an alarm is triggered by a buzzer. The detection mechanism includes a mounting base, a movable base, a connecting rod, a float, and a sensor. The bottom end of the mounting base is fixedly connected to the top end of the elevator pit, and a portion of the bottom end of the mounting base is above the sump. The mounting base has a movable groove that mates with the movable base, and the movable base slides against the inner wall of the movable groove. The top end of the connecting rod passes through the bottom end of the mounting base and is fixedly connected to the bottom end of the movable base. The top end of the float is fixedly connected to the bottom end of the connecting rod. A sensor is installed on the inner wall of the movable groove. The mechanism also includes a buzzer electrically connected to the sensor. The buzzer is installed in the guard room, and the sensor transmits a signal to the buzzer to trigger an alarm, thus alerting relevant personnel to the presence of water in the sump.

[0010] To pump out the water from the sump, the pumping mechanism includes a first motor, a screw, a slider, a connecting plate, a pump, a pumping pipe, a telescopic pipe, a flow pipe, and a pump head. The first motor is mounted on the fixed base. The two ends of the screw are rotatably connected to the inner top wall and the inner bottom wall of the moving groove, respectively. The output end of the first motor passes through the top of the fixed base and is coaxially and fixedly connected to the top of the screw. The slider is disposed in the moving groove and threadedly connected to the screw. One end of the connecting plate is fixedly connected to one end of the slider. The pump is mounted on the top of the fixed base. The pumping pipe is L-shaped. One end of the pumping pipe is connected to the input end of the pump. One end of the telescopic pipe is connected to the other end of the pumping pipe. The connecting plate has a flow hole that cooperates with the telescopic pipe. The other end of the telescopic pipe is connected to the top of the flow hole. One end of the flow pipe is connected to the bottom of the flow hole. The top of the pump head is connected to the bottom of the flow pipe.

[0011] To ensure timely shutdown of the water pump after the water in the sump is drained, thus preventing damage to the pump, a water level detection device is included to monitor the water level in the sump. This device comprises a mounting rod and a water level monitor. The top of the mounting rod is fixedly connected to the bottom of the connecting plate, and the water level monitor is mounted on the bottom of the mounting rod. A receiver, which works in conjunction with the water level monitor, is installed inside the water pump. The receiver is electrically connected to the water pump. When the water level monitor does not detect any water in the sump, it sends a signal to the receiver, which then promptly stops the water pump upon receiving the signal.

[0012] In order to accurately detect whether all the water in the sump has been pumped out, the bottom of the water level monitor and the bottom of the pump head are on the same horizontal line.

[0013] To prevent the movable seat from moving out of the mounting base, the bottom of the mounting base is provided with a through hole that mates with the connecting rod, and the cross-sectional area of ​​the through hole is smaller than the cross-sectional area of ​​the movable groove.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides an automatic drainage device for elevator pits, which has the following beneficial effects: by setting up a detection device, when there is water in the pit, the float will gradually rise, the float will drive the connecting rod to rise vertically, the connecting rod will drive the moving seat to rise, and when the moving seat contacts the sensor, the sensor will transmit a signal to the buzzer, the buzzer will sound an alarm, thus reminding the personnel to start the first motor to pump water;

[0016] With the cooperation of the pumping mechanism and the water level detection device, the first motor drives the pump head and the water level monitor to move downwards simultaneously. When the water level monitor comes into contact with the accumulated water, it sends a signal to the pump to start pumping out the accumulated water. As the pump head and the water level monitor continue to move downwards, all the water in the sump is pumped out. At this point, the water level monitor no longer detects any water and sends a signal to the pump to shut it off in time. This method can pump out the water in the automatic sump and keep the water in contact with the bottom of the pump head to prevent water from corroding the pipes. In the future, only the pump head needs to be replaced.

[0017] Therefore, the automatic drainage device for elevator pits in this invention is used to solve the problem mentioned in the background art of water accumulation in drainage pipes for a long time, which causes the inner wall of the pipe to be in a damp state for a long time, easily leading to corrosion and reducing the service life of the pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in a preferred embodiment of this application;

[0019] Figure 2 This is a partial structural cross-sectional view of the whole in a preferred embodiment of this application;

[0020] Figure 3 In a preferred embodiment of this application Figure 2 Enlarged view of the local structure at point A;

[0021] Figure 4 This is a partial structural cross-sectional view of a preferred embodiment of the present application, showing the pump head and water level monitor moving downwards together to pump out accumulated water.

[0022] Figure 5 This is a partial structural cross-sectional view of the mounting base in a preferred embodiment of this application.

[0023] In the diagram: 1. Elevator pit; 2. Water sump; 3. Fixed seat; 4. Moving cavity; 5. Mounting seat; 6. Moving seat; 7. Connecting rod; 8. Float; 9. Sensor; 11. First motor; 12. Screw; 13. Slider; 14. Connecting plate; 15. Water pump; 16. Water pumping pipe; 17. Telescopic pipe; 18. Water flow pipe; 19. Pumping head; 20. Mounting rod; 21. Water level monitor; 22. Through hole; 23. Moving groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Please see Figures 1 to 5 An automatic drainage device for elevator pits is applied to elevator pit 1, which has a water accumulation pit 2 and also includes a detection mechanism, a fixed base 3 and a pumping mechanism.

[0027] like Figure 2 , Figure 3 and Figure 5As shown, the detection mechanism is installed on the elevator pit 1 to detect whether there is water in the sump 2. To detect whether there is water in the sump 2, when the water level is at a dangerous level, an alarm is triggered by a buzzer to pump out the water from the sump 2. The detection mechanism includes a mounting base 5, a movable base 6, a connecting rod 7, a float 8, a sensor 9, and a buzzer. The bottom end of the mounting base 5 is fixedly connected to the top end of the elevator pit 1, and a part of the bottom end of the mounting base 5 is above the sump 2. The mounting base 5 has a movable groove that cooperates with the movable base 6. The movable base 6 slides in contact with the inner wall of the movable groove. The top end of the connecting rod 7 passes through the bottom end of the mounting base 5 and is fixedly connected to the bottom end of the movable base 6. To prevent the movable base 6 from moving out of the mounting base 5, the connecting rod 7 is installed... The bottom of the mounting base 5 has a through hole 22 that mates with the connecting rod 7. The cross-sectional area of ​​the through hole 22 is smaller than that of the moving groove. The top of the float 8 is fixedly connected to the bottom of the connecting rod 7. A sensor 9 is installed on the inner wall of the moving groove. A buzzer electrically connected to the sensor 9 is also included. The buzzer is installed in the guard room. The sensor 9 will transmit a signal to the buzzer to trigger an alarm, thus reminding relevant personnel that there is water accumulation in the sump. When there is water accumulation in the sump 2 and the water level gradually rises, the float 8 gradually rises. The float 8 drives the connecting rod 7 to rise longitudinally. The connecting rod 7 drives the moving base 6 to rise. When the moving base 6 contacts the sensor 9, the sensor 9 transmits a signal to the buzzer, and the buzzer sounds an alarm.

[0028] The bottom end of the fixed seat 3 is fixedly connected to the top end of the elevator pit 1. A movable cavity 4 is provided inside the fixed seat 3, and the movable cavity 4 is located at one end of the fixed seat 3.

[0029] like Figure 2 and Figure 3As shown, a pumping mechanism is installed inside the fixed base 3 to pump out the water accumulated in the sump 2. To pump out the water from the sump 2, the pumping mechanism includes a first motor 11, a screw 12, a slider 13, a connecting plate 14, a pump 15, a pumping pipe 16, a telescopic pipe 17, a flow pipe 18, and a pump head 19. The first motor 11 is mounted on the fixed base 3. The two ends of the screw 12 are rotatably connected to the inner top and bottom walls of the moving groove, respectively. The output end of the first motor 11 passes through the top of the fixed base 3 and is coaxially fixedly connected to the top of the screw 12. The slider 13 is located inside the moving groove and threadedly connected to the screw 12. One end of the connecting plate 14 is fixedly connected to one end of the slider 13. The pump 15 is mounted on the top of the fixed base 3. The pump 15 and the first motor 11 are respectively located on the fixed base 3. At both ends of the top, the water suction pipe 16 is L-shaped. One end of the water suction pipe 16 is connected to the input end of the water pump 15, and one end of the telescopic pipe 17 is connected to the other end of the water suction pipe 16. The connecting plate 14 is provided with a water flow hole that cooperates with the telescopic pipe 17. The other end of the telescopic pipe 17 is connected to the top of the water flow hole, and one end of the water flow pipe 18 is connected to the bottom of the water flow hole. The top end of the water pump head 19 is connected to the bottom end of the water flow pipe 18. By starting the first motor 11, the output end of the first motor 11 rotates, which drives the screw 12 to rotate. The screw 12 drives the slider 13 to move downward. The slider 13 drives the connecting plate 14 to move downward. The connecting plate 14 simultaneously drives the water flow pipe 18 to move downward. The telescopic pipe 17 extends, and the water flow pipe 18 drives the water pump head 19 to move downward, thus pumping out the water in the water accumulation pit 2.

[0030] like Figure 2 and Figure 4As shown, in order to stop the water pump 15 promptly after the water in the sump 2 is pumped out to avoid damage to the water pump 15, a water level detection device is also included to detect the water level in the sump 2. The water level detection device includes a mounting rod 20 and a water level monitor 21. The top end of the mounting rod 20 is fixedly connected to the bottom end of the connecting plate 14, and the water level monitor 21 is installed at the bottom end of the mounting rod 20. In order to accurately detect whether all the water in the sump 2 has been pumped out, the bottom end of the water level monitor 21 is on the same horizontal line as the bottom end of the pump head 19. A receiver that cooperates with the water level monitor 21 is installed inside the water pump 15. The receiver is electrically connected to the water pump 15. When the water level monitor 21 does not detect any water in the sump 2, the receiver will detect the water level in the sump 2. When water is collected, the water level monitor 21 sends a signal to the receiver. Upon receiving the signal, the receiver promptly stops the water pump 15. When the first motor 11 drives the connecting plate 14 to move downward, it simultaneously drives the water pipe 18 and the mounting rod 20 to move downward. The water pipe 18 and the mounting rod 20 respectively drive the pump head 19 and the water level monitor 21 to move downward. When the water level monitor 21 comes into contact with the accumulated water, it sends a signal to the water pump 15 to start the water pump 15 to pump out the accumulated water. As the pump head 19 and the water level monitor 21 continue to move downward, all the accumulated water in the water pit 2 is pumped out. At this time, the water level monitor 21 does not detect the accumulated water. At this time, the water level monitor 21 sends a signal to the water pump 15 to promptly shut down the water pump 15.

[0031] Working principle: This automatic drainage device for the elevator pit is installed at the elevator pit 1. When water accumulates in the pit 2 and the water level gradually rises, the float 8 gradually rises. The float 8 drives the connecting rod 7 to rise vertically, and the connecting rod 7 drives the moving seat 6 to rise. When the moving seat 6 contacts the sensor 9, the sensor 9 transmits a signal to the buzzer, and the buzzer sounds an alarm. At this time, the first motor 11 can be started manually. The output end of the first motor 11 rotates, driving the screw 12 to rotate. The screw 12 drives the slider 13 to move downward, and the slider 13 drives the connecting plate 14 to move downward. At the same time, it drives the water pipe 18 and the mounting rod 20 to move downward. The water pipe 18 and the mounting rod 20 respectively drive the pump head 19 and the water level monitor 21 to move downward. As the water level monitor 21 moves downwards, it sends a signal to the water pump 15 after contacting the accumulated water, thus starting the water pump 15 to pump out the accumulated water. As the pump head 19 and the water level monitor 21 continue to move downwards, all the accumulated water in the sump 2 is pumped out. At this time, the water level monitor 21 does not detect the accumulated water. At this time, the water level monitor 21 sends a signal to the water pump 15 to shut down the water pump 15 in time. This can pump out the accumulated water in the sump 2 and shut down the water pump 15 in time to prevent damage to the water pump 15. The first motor 11 drives the water pipe 18 and the pump head 19 to move upwards and out of the sump 2. This can reduce the contact area between the water pipe 18 and the pump head 19 and the accumulated water, avoiding corrosion of the water pipe 18 and the pump head 19 by the accumulated water.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic drainage device for elevator pits, applied to elevator pits (1), characterized in that, The elevator pit (1) is provided with a water collection pit (2), and also includes: The testing agency is set on the elevator pit (1) and is used to detect whether there is water in the water accumulation pit (2); A fixed seat (3) is provided, the bottom end of which is fixedly connected to the top end of the elevator pit (1), and a movable cavity (4) is provided inside the fixed seat (3). A pumping mechanism is installed inside the fixed base (3) and is used to pump out the water in the sump (2).

2. The automatic drainage device for elevator pits according to claim 1, characterized in that, The testing institutions include: Mounting base (5), the bottom end of which is fixedly connected to the top end of the elevator pit (1), and a portion of the bottom end of the mounting base (5) is above the sump (2); The movable seat (6) has a movable groove on the mounting seat (5) that cooperates with the movable seat (6), and the movable seat (6) slides in cooperation with the inner wall of the movable groove; A connecting rod (7) is provided, the top end of which passes through the bottom end of the mounting base (5) and is fixedly connected to the bottom end of the movable base (6). A float (8) is fixedly connected at its top end to the bottom end of the connecting rod (7); Sensor (9) is installed on the inner wall of the moving slot.

3. The automatic drainage device for elevator pits according to claim 2, characterized in that, The pumping mechanism includes: The first motor (11) is mounted on the fixed base (3); The screw (12) is rotatably connected to the inner top wall and inner bottom wall of the moving groove respectively at both ends. The output end of the first motor (11) passes through the top end of the fixed seat (3) and is coaxially fixedly connected to the top end of the screw (12). A slider (13) is disposed in the movable groove and threadedly connected to the screw (12); A connecting plate (14), one end of which is fixedly connected to one end of the slider (13); A water pump (15) is mounted on the top of the fixed base (3); A water pump pipe (16) is L-shaped, and one end of the water pump pipe (16) is connected to the input end of the water pump (15). Telescopic pipe (17), one end of which is connected to the other end of the pumping pipe (16), and a water flow hole that cooperates with the telescopic pipe (17) is provided on the connecting plate (14), and the other end of the telescopic pipe (17) is connected to the top of the water flow hole. A water pipe (18), one end of which is connected to the bottom of the water hole; A water pump head (19) is connected at the top end to the bottom end of the water pipe (18).

4. The automatic drainage device for elevator pits according to claim 3, characterized in that, It also includes a water level detection device for detecting the water level in the sump (2), the water level detection device comprising: Mounting rod (20), the top end of which is fixedly connected to the bottom end of the connecting plate (14); A water level monitor (21) is installed at the bottom end of the mounting rod (20).

5. The automatic drainage device for elevator pits according to claim 4, characterized in that, The bottom end of the water level monitor (21) is on the same horizontal line as the bottom end of the pump head (19).

6. An automatic drainage device for elevator pits according to claim 2, characterized in that, The bottom of the mounting base (5) is provided with a through hole (22) that cooperates with the connecting rod (7), and the cross-sectional area of ​​the through hole (22) is smaller than the cross-sectional area of ​​the moving groove.

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