Liquid level over-limit alarm device for backwater filling pool

Abstract

The utility model discloses a filling backwater pool liquid level over-limit alarm device, and belongs to the technical field of alarm devices. A filling backwater pool liquid level over-limit alarm device comprises a trigger mechanism and an alarm which are connected with a controller, the trigger mechanism comprises a supporting frame, a floating barrel and a key switch, the supporting frame is erected above a filling backwater pool, one end of the supporting frame is close to the filling backwater pool, and the other end of the supporting frame is far away from the filling backwater pool. A key switch connected with the alarm is arranged at the end, away from the backwater filling pool, of the supporting frame, and a floating barrel located in the backwater filling pool and used for controlling on-off of the key switch is hung on the supporting frame. The device has the advantages that the structure is simple, the electricity utilization safety is high, and more serious damage to the first slurry pump is avoided.

Description

Technical Field

[0001] This utility model relates to the field of alarm device technology, and in particular to an alarm device for exceeding the liquid level limit in a filling return water tank. Background Technology

[0002] The mine uses a backfill water pool to hold backfill water pumped from the mine. The water is turbid and contains a large amount of mud. Two slurry pumps (one in use and one on standby) drain the water from outside the pool. There is an overflow outlet at the edge of the pool. When the slurry pump fails, the water level continues to rise and flows out through the overflow outlet, causing mud and water to be discharged.

[0003] To prevent the discharge of backfill water and to ensure that a slurry pump failure is detected immediately (to avoid the slurry pump remaining in a faulty state for an extended period and causing more serious damage), a liquid level over-limit alarm device needs to be installed in the backfill water tank.

[0004] Current liquid level detection technologies mainly utilize various liquid level sensors, which are primarily categorized into contact and non-contact liquid level sensors. These include float switches, capacitive liquid level sensors, photoelectric liquid level sensors, electrode liquid level sensors, tuning fork liquid level sensors, ultrasonic liquid level sensors, and microwave liquid level sensors. Generally speaking, these liquid level sensors suffer from the following two drawbacks: First, some liquid level sensors require the probe to be kept clean during use, but the environment of the return water tank necessitates regular cleaning of the sensors, making them inconvenient to use. Moreover, these sensors are themselves expensive. Second, all liquid level sensors must be placed near the location to be detected (immersed in the medium or located near the medium), and electrical wires and cables must be laid next to the return water tank, posing electrical safety risks. Utility Model Content

[0005] The purpose of this invention is to solve the problems of inconvenience and certain safety risks associated with the use of existing liquid level sensors in filling and return water tanks, and to propose an alarm device for excessive liquid level in filling and return water tanks.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An alarm device for exceeding the liquid level limit in a filling return water tank includes a triggering mechanism and an alarm connected to a controller. The triggering mechanism includes a support frame, a float, and a push-button switch. The support frame is mounted above the filling return water tank, with one end close to the filling return water tank and the other end away from the filling return water tank. The push-button switch connected to the alarm is provided at the end of the support frame away from the filling return water tank. A float located inside the filling return water tank and used to control the on / off state of the push-button switch is hung on the support frame.

[0008] Furthermore, a pull rope is provided on the support frame, and the pull rope is installed on the support frame through pulleys. A float and a counterweight are respectively provided at both ends of the pull rope, and the counterweight is located directly above the push-button switch.

[0009] Furthermore, the weight of the float is greater than the weight of the counterweight, the lower part of the float is submerged in the water, and the weight of the float in the water corresponds to the weight of the counterweight.

[0010] Furthermore, when the push-button switch is powered on, the controller activates the alarm.

[0011] Furthermore, it also includes a No. 1 switch. The controller and the No. 1 slurry pump are electrically connected through the No. 1 switch. When the push-button switch is energized, the controller controls the No. 1 switch to shut down the No. 1 slurry pump.

[0012] Furthermore, it also includes a second switch. The controller and the second slurry pump are electrically connected through the second switch. When the push-button switch is energized, the controller starts the second slurry pump by controlling the second switch.

[0013] Furthermore, the push-button switch is mounted on one side of the support frame via a base.

[0014] Compared with the prior art, this utility model provides an alarm device for excessive liquid level in a filling return water tank, which has the following beneficial effects:

[0015] This utility model discloses an alarm device for excessive liquid level in a filling return water tank. In use, the device is installed on the filling return water tank, keeping the energized push-button switch away from the tank. When the No. 1 slurry pump malfunctions, the slurry water level in the filling return water tank rises, causing the float to rise. The float triggers the push-button switch, which in turn activates the alarm, replacing the liquid level sensor for detecting the liquid level in the filling return water tank. The device has a simple structure, requires no maintenance, and uses electrical equipment principles to fill the return water tank, reducing safety risks.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the present invention.

[0019] In the picture:

[0020] 1. Filling return water tank; 2. Support frame; 3. Float; 4. Pull rope; 5. Counterweight; 6. Push button switch; 7. Base; 8. Controller; 9. Alarm; 10. No. 1 slurry pump; 11. No. 2 slurry pump. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-2 The present invention provides an alarm device for exceeding the liquid level limit in a filling return water tank, comprising a triggering mechanism and an alarm 9 connected to a controller 8. The triggering mechanism changes its state according to the water level change in the filling return water tank 1. After the controller 8 detects the state change of the triggering mechanism, it controls the alarm 9 to start the alarm.

[0023] The triggering mechanism includes a support frame 2, a float 3, and a push-button switch 6. The support frame 2 is installed above the filling return water pool 1. The support frame 2 can be installed using support plates used in mine operations. The float 3 is made of water buckets, which are easy to obtain.

[0024] One end of the support frame 2 is close to the filling return water tank 1, and the other end is away from the filling return water tank 1, such as... Figure 1 As shown, the distance between the two ends of the support frame 2 and the filling return water tank 1 can be selected according to the site environment. The end that is far away from the filling return water tank 1 should be within a safe range and not be flooded.

[0025] A push-button switch 6 connected to the alarm 9 is installed at the end of the support frame 2 away from the filling and return water tank 1. A float 3 located in the filling and return water tank 1 is hung on the support frame 2 to control the on and off of the push-button switch 6. When the water level in the filling and return water tank 1 rises to a predetermined height in the filling and return water tank 1, the float 3 presses down the push-button switch 6, and the push-button switch 6 changes from the open state to the closed state. The controller 8 detects the change in the state of the push-button switch and controls the alarm 9 to start the alarm.

[0026] According to the situation on site, both the alarm 9 and the controller 8 are installed in the dispatch room. When the alarm 9 sounds, the staff in the dispatch room go to the site of the backfill water tank 1 to handle the fault.

[0027] A pull rope 4 is installed on the support frame 2. The pull rope 4 is mounted on the support frame 2 via pulleys. A float 3 and a counterweight 5 are respectively installed at both ends of the pull rope 4. The counterweight 5 is located directly above the push-button switch 6, as detailed below. Figure 1The counterweight 5 and the float 3 are located at the two ends of the pulley structure, respectively. The length of the pull rope 4 is constant, and the height of the counterweight 5 is determined by the float 3. When the float 3 rises, the counterweight 5 falls. When the counterweight 5 falls, it presses on the button switch 6, and the button switch 6 changes from the off state to the on state.

[0028] The weight of float 3 is greater than the weight of counterweight 5. The lower part of float 3 is submerged in water. The weight of float 3 in water corresponds to the weight of counterweight 5. Float 3 can be made of an ordinary water bucket plus counterweight, so that the weight of float 3 is greater than that of counterweight 5. When float 3 falls into the muddy water in the backfill pool 1, under the action of buoyancy, the pulling force of float 3 on pull rope 4 is equal to the pulling force of counterweight 5 on pull rope 4.

[0029] Slurry pump No. 10 is used for daily pumping and discharging of mud and water, while slurry pump No. 21 is used as a backup in case slurry pump No. 10 fails.

[0030] When the No. 1 slurry pump 10 malfunctions, the water level in the filling return water tank 1 rises, causing the float 3 to rise, which in turn drives the counterweight 5 to fall, pressing down on the button switch 6, thus turning on the button switch 6.

[0031] When the water level in the backfill pool 1 rises, the counterweight 5 descends, pressing the button switch 6 to connect. When the button switch 6 is powered on, the controller 8 activates the alarm 9, reminding the staff to promptly detect the malfunction of the No. 1 slurry pump 10 and start the No. 2 slurry pump 11.

[0032] This device also includes a No. 1 switch. The controller 8 and the No. 1 slurry pump 10 are electrically connected through the No. 1 switch. When the push-button switch 6 is energized, the controller 8 controls the No. 1 switch to shut down the No. 1 slurry pump 10 in a timely manner, so as to avoid the No. 1 slurry pump 10 remaining energized for a long time in the event of a fault, which could lead to more serious losses.

[0033] This device also includes a second switch. The controller 8 and the second slurry pump 11 are electrically connected through the second switch. When the button switch 6 is energized, the controller 8 starts the second slurry pump 11 by controlling the second switch. When the water level rises to the point where the button switch 6 is turned on, the controller 8 controls the alarm 9 to be activated and simultaneously disconnects the power supply to the first slurry pump 10, and then turns the second slurry pump 11 on. In order to prevent the first slurry pump 10 from being damaged more seriously, the second slurry pump 11 is started to prevent the mud and water from exceeding the limit line in the filling return water tank 1, and then waits for the staff to come to the site to repair the first slurry pump 10.

[0034] The push-button switch 6 is mounted on one side of the support frame 2 via the base 7, so that the push-button switch 6 is off the ground and avoids being flooded.

[0035] Working principle: When in use, this device is placed next to the filling return water tank 1. When the No. 1 slurry pump 10 fails, the mud and water level in the filling return water tank 1 rises, causing the float 3 to rise, which causes the counterweight 5 to fall and press on the button switch 6. The button switch 6 is turned on, and the controller 8 detects the change in the state of the button switch 6 and controls the alarm 9 and the No. 2 slurry pump 11 to start, while shutting down the No. 1 slurry pump 10.

[0036] After the staff arrived at the site, they adjusted the power of the No. 2 slurry pump 11 to restore the water level in the filling return water tank 1 to its initial height, thereby restoring the height of the float 3 and the counterweight 5 to their initial height. The button switch 6 was then turned off. Then, the No. 1 slurry pump 10 was repaired or replaced.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A backfill water tank level overrun alarm device comprising a trigger mechanism and an alarm (9) connected to a controller (8), characterized in that, The trigger mechanism comprises a support frame (2), a float bucket (3) and a key switch (6), the support frame (2) is erected above the filling backwater pool (1), one end of the support frame (2) is close to the filling backwater pool (1), the other end of the support frame (2) is away from the filling backwater pool (1), the end of the support frame (2) away from the filling backwater pool (1) is provided with the key switch (6) connected with the alarm (9), the support frame (2) is hung with the float bucket (3) located in the filling backwater pool (1) for controlling the on-off of the key switch (6).

2. A backfill tank level overrun alarm device according to claim 1, characterised in that, The support frame (2) is provided with a pull rope (4), the pull rope (4) is installed on the support frame (2) through a pulley, both ends of the pull rope (4) are respectively provided with the float bucket (3) and a counterweight (5), the counterweight (5) is located directly above the key switch (6).

3. A backfill tank level overrun alarm device according to claim 2, wherein, The weight of the float bucket (3) is greater than that of the counterweight (5), the lower part of the float bucket (3) enters the water, and the gravity of the float bucket (3) in the water corresponds to the gravity of the counterweight (5).

4. A backfill tank level overrun alarm device according to claim 3, wherein, When the key switch (6) is powered on, the controller (8) starts the alarm (9).

5. A backfill tank level over-run alarm device according to claim 4, wherein, Further comprising a first switch, the controller (8) and the first slurry pump (10) are electrically connected through the first switch, when the key switch (6) is powered on, the controller (8) controls the first switch to close the first slurry pump (10).

6. A backfill tank level over-run alarm device according to claim 5, wherein, Further comprising a second switch, the controller (8) and the second slurry pump (11) are electrically connected through the second switch, when the key switch (6) is powered on, the controller (8) controls the second switch to start the second slurry pump (11).

7. The backfilling water tank level overrun alarm device according to claim 1, characterized in that, The key switch (6) is installed on one side of the support frame (2) through a base (7).

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