Water prevention device for elevator

Abstract

The utility model relates to the field of elevators. A water prevention device for an elevator comprises a water level sensor, the water level sensor comprises a circuit board, ten metal wires are arranged on the circuit board side by side, supporting legs are arranged at the bottom of the circuit board, the outer diameters of the supporting legs are gradually reduced from top to bottom, and the water level sensor is inserted into the ground of a pit through the supporting legs. The water level sensor is in communication connection with an elevator control system for controlling elevator operation. The water level sensor is associated with the elevator control system, so that the elevator control system controls the elevator to run to the top of the elevator shaft when the water level reaches a threshold value, the elevator can be prevented from entering a pit accumulated water position, and the problem that the pit accumulated water is poured into an elevator car is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator field, concretely relates to prevent water device. BACKGROUND

[0002] Coastal areas, typhoon day is more, rainy season is longer, rainwater is very easy to enter into building elevator shaft, if drainage is not in time, pit place can appear waterlogging, once elevator operation reaches the pit with waterlogging, waterlogging can fill into elevator car, influence elevator operation, serious can cause elevator damage. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a kind of elevator prevent water devices, to solve above-mentioned technical problem.

[0004] The technical problem solved by the utility model can be implemented using the following technical solutions:

[0005] A kind of elevator prevent water device, including water level sensor, the water level sensor includes circuit board, ten metal wires are arranged side by side on the circuit board, characterized by, the bottom of the circuit board is equipped with support leg, the outer diameter of the support leg gradually decreases from top to bottom, the water level sensor is inserted into the ground of pit using the support leg, the water level sensor is connected with the elevator control system for controlling elevator operation.

[0006] Preferably, the circuit board is sleeved with a water-proof sleeve in the shape of a cylinder, the top of the water-proof sleeve is closed and the bottom is open, one side of the circuit board is bonded to the inner side wall of the water-proof sleeve, the other side of the circuit board is electroplated with the metal wires, and a gap exists between the metal wires and the water-proof sleeve.

[0007] Preferably, a through slot is formed in the side wall of the water-proof sleeve, and the through slot is located at the side electroplated with the metal wires.

[0008] Preferably, the support leg is provided with annular grooves with openings facing outward, there are at least two annular grooves, the spacing between the adjacent two annular grooves is the same, and the inner diameters of the annular grooves are equal.

[0009] Preferably, an annular gasket is clamped in one of the annular grooves, the thickness of the annular gasket is less than the distance between the adjacent two annular grooves, a notch is formed in the annular gasket, the diameter of the notch at the position opposite to the annular groove is equal to the inner diameter of the annular groove, and the diameter of the notch at the position not opposite to the annular groove is greater than the diameter of the notch at the position opposite to the annular groove.

[0010] Preferably, the water level sensors inserted into the same elevator shaft are at least four, and the four water level sensors are opposite to the four corner portions of the elevator car respectively.

[0011] Preferably, the elevator control system is an external call panel, and the water level sensor is wired to the external call panel closest to the ground of the pit.

[0012] Beneficial Effects: 1. This invention adds a water level sensor inside the elevator shaft, which can detect the water level in the pit in real time. 2. This invention links the water level sensor to the elevator control system, so that when the water level reaches a threshold, the elevator control system controls the elevator to run to the top of the elevator shaft. This has the following advantages: Firstly, it prevents the elevator from entering the pit where water accumulates, solving the problem of water from the pit entering the elevator car. Secondly, running the elevator to the top of the elevator shaft, although rainwater will still enter the top of the shaft, drains faster and accumulates less water compared to other parts of the elevator shaft, especially the pit, effectively reducing the damage caused by rainwater to the elevator. Attached Figure Description

[0013] Figure 1 A schematic diagram of a structure for a water level sensor;

[0014] Figure 2 This is a partial structural diagram of a water level sensor. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below in conjunction with the accompanying drawings.

[0016] An elevator water prevention device includes a water level sensor installed in the pit of the elevator shaft. The water level sensor is communicatively connected to an elevator control system used to control elevator operation. The water level sensor detects the water level in the pit in real time and reports the detected water level information to the elevator control system. When the water level in the pit reaches a set value, the system controls the elevator to move to the top of the elevator shaft. This prevents the elevator from entering the water-filled pit, thus solving the problem of water entering the elevator car. Furthermore, moving the elevator to the top of the elevator shaft, although rainwater will still enter the top of the shaft, drains faster and accumulates less water compared to other parts of the shaft, especially the pit, effectively reducing rainwater damage to the elevator.

[0017] Regarding water level sensors, refer to... Figure 1 , Figure 2

[0018] The preferred water level sensor is the WL-Meter model. This water level sensor includes a circuit board 1 with ten metal wires 7 arranged side-by-side and vertically, acting as a resistor. The higher the water level, the longer the metal wires 7 are immersed in the water, resulting in lower resistance. To ensure effective contact between the ten metal wires 7 and the water in the pit, and to prevent water flowing down the elevator shaft wall from affecting the water level sensor, one side of the circuit board 1 is plated with metal wires. A cylindrical waterproof sleeve 6 is fitted over the circuit board 1. The top of the waterproof sleeve 6 is closed, and the bottom is open. The side of the circuit board 1 without the plated metal wires is adhered to the inner wall of the waterproof sleeve 6, creating a gap between the metal wires and the waterproof sleeve 6. A through-groove 5 is formed on the side wall of the waterproof sleeve 6, located on the side of the metal plated with metal wires. This design offers the following advantages: 1. The through-groove 5 ensures that water reaches the metal wires without creating capillary action within the waterproof sleeve 6. 2. The top of the water-proof sleeve 6 can shield the metal wire, preventing water dripping from above from affecting the test results. The top of the water-proof sleeve 6 can be equipped with a waterproof cover, the outer diameter of which gradually increases from top to bottom, and the maximum outer diameter of the waterproof cover is larger than the outer diameter of the water-proof sleeve 6. This further prevents water dripping from above from affecting the test results.

[0019] The bottom of circuit board 1 is provided with a support leg 2, the outer diameter of which gradually decreases from top to bottom. The water level sensor is inserted into the ground of the pit using the support leg 2. There can be only one support leg 2, located in the center of the bottom of circuit board 1, or there can be two support legs 2, located on the two sides of the bottom of circuit board 1 respectively. The support leg 2 is provided with annular grooves 3 with outward openings, and there is at least one annular groove 3. The annular grooves 3 have the following functions: 1. They can effectively block water from rising along the support leg 2, avoiding monitoring errors caused by capillary action, surface tension, etc. 2. The annular grooves 3 can be arranged at equal intervals. During the installation of the water level sensor, the user can choose the number of exposed annular grooves 3 as needed, thereby helping to determine the distance from the metal wire to the ground of the pit based on the number of exposed annular grooves 3. 3. Annular washers 4 can be inserted into the annular grooves 3, thereby increasing the contact area between the water level sensor and the ground of the pit by using the limiting ring, effectively improving the stability of the water level sensor. Preferably, the annular washers 4 have notches, so that the support leg 2 can be inserted into the notches. The annular washer 4 preferably has a certain thickness, thereby increasing the contact area with the support leg 2. The inner diameter of the notch in the annular washer 4 is equal to the inner diameter of the annular groove 3 where it is directly opposite to the annular groove 3, and equal to the inner diameter of the support leg 2 where it is not directly opposite the annular groove 3. The thickness of the annular washer 4 is less than the distance between two adjacent annular grooves 3. Preferably, at least four water level sensors are inserted into the same elevator shaft, one at each of the four corners of the pit opposite the elevator car. Preferably, the inner diameter of each annular groove 3 is the same to facilitate the snap-fitting and production of the annular washer 4. Note that the inner diameter of the annular groove 3 in this invention refers to the distance from the bottom of the annular groove 3 to the central axis of the support leg 2. The support leg 2 in this invention is preferably a cylindrical support leg with a circular outer profile.

[0020] Regarding elevator control systems

[0021] The elevator control system can be an internal call panel located inside the elevator car, an external call panel located outside the elevator car at the elevator door, or a central controller located in the monitoring room. When the water level sensor is connected to the central controller, personnel in the monitoring room can manually control the elevator to run to the top floor or even stop it based on the water level. When the water level sensor is connected to either the internal or external call panel, the threshold signal from the water level sensor can be used as a switch signal for the elevator to run to the top floor automatically, or even trigger a remote alarm.

[0022] The water level sensor can be connected to the elevator control system via wireless or wired methods. Preferably, the water level sensor is connected via wired connection to the external call panel closest to the pit floor. This reduces wiring complexity and wire length.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An elevator water prevention device comprising a water level sensor, the water level sensor comprising a circuit board on which ten metal wires are arranged side by side, characterized in that, The bottom of the circuit board is provided with a support leg, the outer diameter of the support leg gradually decreases from top to bottom, the water level sensor is inserted into the ground of the pit by the support leg, and the water level sensor is communicatively connected to an elevator control system for controlling the operation of the elevator.

2. An elevator water prevention device according to claim 1, characterized in that The circuit board is sleeved with a water-proof sleeve in a cylindrical shape, the top of the water-proof sleeve is closed, the bottom of the water-proof sleeve is open, one side of the circuit board is bonded to the inner side wall of the water-proof sleeve, and the other side of the circuit board is electroplated with the metal wire, and a gap exists between the metal wire and the water-proof sleeve.

3. An elevator water prevention device according to claim 2, characterized in that The side wall of the water-proof sleeve is provided with a through groove penetrating upward and downward, and the through groove is located at the side electroplated with the metal wire.

4. The elevator water prevention apparatus according to claim 1, wherein The support leg is provided with an annular groove opening outward, the annular groove has at least two rows, the spacing between the adjacent two rows of annular grooves is the same, and the inner diameters of the annular grooves are equal.

5. An elevator water prevention device according to claim 4, characterized in that One of the annular grooves is connected with a ring-shaped gasket, and the thickness of the ring-shaped gasket is less than the distance between the adjacent two annular grooves. The ring-shaped gasket is provided with a notch, the caliber of the notch is equal to the inner diameter of the annular groove when the notch is opposite to the annular groove, and the caliber of the notch is greater than the caliber of the notch when the notch is not opposite to the annular groove.

6. A water prevention device for an elevator according to any one of claims 1-5, characterized in that The water level sensors inserted into the same elevator shaft are at least four, and the four water level sensors are opposite to the four corner portions of the elevator car respectively.

7. A water prevention device for an elevator according to any one of claims 1-5, characterized in that The elevator control system is an external call panel, and the water level sensor is wiredly connected to the external call panel closest to the ground of the pit.

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