Automatic water replenishing control device for underground water bin

Abstract

The utility model discloses an automatic water replenishing control device for an underground water sump, which comprises a water replenishing pump, the water inlet end of the water replenishing pump is communicated with a water supply sump through a first pipeline, and the water outlet end of the water replenishing pump is communicated with the underground water sump through a second pipeline. The automatic water replenishing control device further comprises a control box used for controlling the water replenishing pump and a floating ball detection device arranged at the underground water bin and used for detecting the height of the liquid level. A main control loop and a secondary control loop are arranged in the control box; and a change-over switch and a start-stop switch are mounted on a front panel of the box body of the control box. The device can be automatically controlled according to the liquid level condition of the underground water bin, and has a manual mode and an automatic mode.

Description

Technical Field

[0001] The utility model relates to a water replenishment control device. Background Art

[0002] In underground mine production operations, whether using a handheld drill or a rock drilling rig, water is needed to reduce the temperature of the drill bit and clean the stone chips in the hole. Due to the vast production area and scattered operation points, it is necessary to select appropriate locations in each section to build underground water tanks. The water source of these underground water tanks is mainly the water supply tanks of the centralized drainage pump room in each area.

[0003] At present, the switch operation of the water replenishment pumps corresponding to each underground water tank is the responsibility of the pump operator in the centralized drainage pump room. Since the pump operator cannot understand the water level of each underground water tank in real time, not only is the efficiency low, but the following problems often occur: if the water replenishment pump is not turned on in time, the water level in the underground water tank may be insufficient, thus affecting production; if the water replenishment pump is turned on for a long time, it may cause the underground water tank to overflow, affecting civilized production. Utility Model Content

[0004] The utility model provides an automatic water replenishment control device for underground water tanks, the purpose of which is to solve the problems of low efficiency and difficulty in accurately controlling the water replenishment time existing in manually controlled water replenishment pumps.

[0005] The technical solution of this utility model is as follows:

[0006] An automatic water replenishment control device for an underground water tank, comprising a water replenishment pump, wherein the water inlet end of the water replenishment pump is connected to a water supply tank through a first pipeline, and the water outlet end of the water replenishment pump is connected to the underground water tank through a second pipeline. The automatic water replenishment control device also comprises a control box for controlling the water replenishment pump and a float detection device arranged at the underground water tank for detecting the liquid level.

[0007] The control box is provided with a main control circuit and a secondary control circuit; a conversion switch and a start-stop switch are installed on the front panel of the control box;

[0008] The float detection device includes an upper limit switch and a lower limit switch;

[0009] In the secondary control loop, the normally open contact of the upper limit switch and the coil of the relay KA1 are connected in series between the positive and negative poles of the power supply, and the normally open contact of the lower limit switch and the coil of the relay KA2 are connected in series between the positive and negative poles of the power supply; the normally open contact of the relay KA1, the normally closed contact of the relay KA2 and the coil of the relay KA3 are connected in series between the positive and negative poles of the power supply, and the first normally open contact of the relay KA3 is also connected in parallel with the normally open contact of the relay KA1; the normally closed contact of the relay KA1, the normally open contact of the relay KA2 and the coil of the relay KA4 are connected in series. Between the positive and negative poles of the power supply, the first normally open contact of the relay KA4 is also connected in parallel with the normally open contact of the relay KA2; the conversion switch is used to select and control the connection between the first branch and the second branch, the first normally closed contact of the relay KA3 and the second normally open contact of the relay KA4 in the first branch are connected in series, and the start-stop switch is provided in the second branch. After the first branch and the second branch are connected in parallel, they are connected in series with the coil of the relay KA5 between the positive and negative poles of the power supply; the normally open contact of the relay KA5 and the coil of the contactor KM are connected in series between the positive and negative poles of the power supply;

[0010] In the main control loop, the power supply is connected to the motor of the water supply pump through the main circuit breaker and the first normally open contact of the contactor KM.

[0011] As a further improvement of the automatic water replenishment control device for underground water tanks: a thermal relay is also provided in the main control circuit;

[0012] In the secondary control loop, the normally closed contact of the thermal relay, the normally open contact of the relay KA5 and the coil of the contactor KM are connected in series between the positive and negative poles of the power supply.

[0013] As a further improvement of the automatic water replenishment control device for underground water tanks: a water shortage indicator light is also provided on the front panel of the box;

[0014] In the secondary control loop, the water shortage indicator light is connected in parallel with the coil of relay KA2.

[0015] As a further improvement of the automatic water replenishment control device for underground water tanks: a full water indicator light is also provided on the front panel of the box body;

[0016] In the secondary control loop, the full water indicator light is connected in parallel with the coil of the relay KA1.

[0017] As a further improvement of the automatic water replenishment control device for underground water tanks: an operation indicator light is also provided on the front panel of the box;

[0018] In the secondary control loop, the second normally open contact of the contactor KM and the operation indicator light are connected in series between the positive and negative electrodes of the power supply.

[0019] Compared with the prior art, the utility model has the following positive effects:

[0020] 1. The utility model can automatically control the liquid level of the underground water tank. When the float reaches the lower limit, the water supply pump automatically starts to replenish water. When the float reaches the upper limit, the water supply pump automatically shuts down, which improves work efficiency and ensures that the start and end time of water replenishment are in line with actual needs. It has the advantages of timely water replenishment and reduced waste of water resources.

[0021] 2. The utility model has two modes, manual and automatic. In the manual mode, the water supply pump can be automatically opened and closed as needed, which is suitable for different control scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is the front view of the control box;

[0024] Figure 3 This is the schematic diagram of the main control circuit;

[0025] Figure 4 This is the schematic diagram of the secondary control loop. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0027] like Figure 1 An automatic water replenishment control device for an underground water tank includes a water replenishment pump 3, the water inlet end of the water replenishment pump 3 is connected to a water supply tank 1 through a first pipeline, and the water outlet end is connected to an underground water tank 5 through a second pipeline. The automatic water replenishment control device also includes a control box 2 for controlling the water replenishment pump 3 and a float detection device 4 arranged at the underground water tank 5 for detecting the liquid level.

[0028] The float detection device 4 includes an upper limit switch 4-1 and a lower limit switch 4-2. In this embodiment, the float detection device 4 includes a sealed metal tube, and two upper and lower magnetic reed switches are arranged in the metal tube as the upper limit switch 4-1 and the lower limit switch 4-2 respectively. The outer side of the metal tube is covered with a hollow float with a ring-shaped magnet inside. The float moves up and down with the liquid level, triggering the upper limit switch 4-1 and the lower limit switch 4-2.

[0029] like Figure 2The control box 2 includes a box body 2-1, the size of which is 400mm*400mm*200mm in height*width*depth. The thickness of the iron plate is not less than 3mm and anti-corrosion treatment is performed. A conversion switch 2-5 and a start-stop switch 2-6 are installed on the front panel of the box body 2-1. A water shortage indicator light 2-2, a full water indicator light 2-3 and a running indicator light 2-4 are also installed. The wiring method is bottom-in and bottom-out. There is an obvious grounding busbar in the box body 2-1 to facilitate the connection of the grounding wire; the box door and the box body 2-1 are connected with soft copper wire.

[0030] Furthermore, the control box 2 is provided with a primary control circuit and a secondary control circuit.

[0031] like Figure 3 In the main control circuit, the power supply is connected to the motor 3-1 of the water supply pump 3 through the main circuit breaker 2-7, the first normally open contact of the contactor KM and the thermal relay 2-8.

[0032] like Figure 4 , in the secondary control circuit: the normally open contact of the upper limit switch 4-1 and the coil of the relay KA1 are connected in series between the positive and negative poles of the power supply, and the full water indicator light 2-3 is connected in parallel with the coil of the relay KA1. The normally open contact of the lower limit switch 4-2 and the coil of the relay KA2 are connected in series between the positive and negative poles of the power supply, and the water shortage indicator light 2-2 is connected in parallel with the coil of the relay KA2. The normally open contact of the relay KA1, the normally closed contact of the relay KA2 and the coil of the relay KA3 are connected in series between the positive and negative poles of the power supply, and the first normally open contact of the relay KA3 is also connected in parallel with the normally open contact of the relay KA1. The normally closed contact of the relay KA1, the normally open contact of the relay KA2 and the coil of the relay KA4 are connected in series between the positive and negative poles of the power supply, and the first normally open contact of the relay KA4 is also connected in parallel with the normally open contact of the relay KA2. The conversion switch 2-5 is used to select and control the connection between the first branch and the second branch. The first normally closed contact of the relay KA3 and the second normally open contact of the relay KA4 in the first branch are connected in series. The start-stop switch 2-6 is provided in the second branch. After the first branch and the second branch are connected in parallel, they are connected in series with the coil of the relay KA5 between the positive and negative poles of the power supply. The normally closed contact of the thermal relay 2-8, the normally open contact of the relay KA5 and the coil of the contactor KM are connected in series between the positive and negative poles of the power supply. The second normally open contact of the contactor KM and the operation indicator light 2-4 are connected in series between the positive and negative poles of the power supply.

[0033] When the switch 2-5 is switched to automatic mode, the left end of the first branch is connected. At this time, if the liquid level drops to the point where the float triggers the lower limit switch 4-2, the relay KA2 is energized, and the water shortage indicator light 2-2 lights up. Then the relay KA4 is energized and self-locked, so that the relay KA5 and the contactor KM are energized, the main control circuit is connected, the motor 3-1 starts to replenish water, and the operation indicator light 2-4 lights up. When the float leaves the lower limit, the water shortage indicator light 2-2 goes out, but during the water replenishment process, the relay KA4, the relay KA5 and the contactor KM are always energized, and the operation indicator light 2-4 is always on. Until the float triggers the upper limit switch 4-1, the relay KA1 is energized, the full water indicator light 2-3 lights up, and then the relay KA3 is energized and self-locked, and the relay KA4 is de-energized at the same time, and then the relay KA5 and the contactor KM are de-energized, and the motor 3-1 is turned off to stop replenishing water. As water is used, the liquid level in the underground water tank 5 slowly drops. After the float leaves the upper limit position, the full water indicator light 2-3 goes out, but the relay KA3 is always energized due to self-locking, ensuring that the relay KA5 and the contactor KM are always de-energized until the float triggers the lower limit switch 4-2 and water replenishment starts again.

[0034] When the switch 2-5 is switched to manual mode, the left end of the second branch is connected. The pump operator can directly control the water replenishment through the start and stop button, and can judge the current water level status according to the indicator light.

[0035] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. An automatic water replenishment control device for an underground water tank, comprising a water replenishment pump (3), wherein the water inlet end of the water replenishment pump (3) is connected to a water supply tank (1) through a first pipeline, and the water outlet end of the water replenishment pump (3) is connected to an underground water tank (5) through a second pipeline, characterized in that: The automatic water replenishment control device also includes a control box (2) for controlling the water replenishment pump (3) and a float detection device (4) arranged at the underground water tank (5) for detecting the liquid level. The control box (2) is provided with a main control circuit and a secondary control circuit; a conversion switch (2-5) and a start-stop switch (2-6) are installed on the front panel of the box body (2-1) of the control box (2); The float detection device (4) comprises an upper limit switch (4-1) and a lower limit switch (4-2); In the secondary control circuit, the normally open contact of the upper limit switch (4-1) and the coil of the relay KA1 are connected in series between the positive and negative poles of the power supply, and the normally open contact of the lower limit switch (4-2) and the coil of the relay KA2 are connected in series between the positive and negative poles of the power supply; the normally open contact of the relay KA1, the normally closed contact of the relay KA2 and the coil of the relay KA3 are connected in series between the positive and negative poles of the power supply, and the first normally open contact of the relay KA3 is also connected in parallel with the normally open contact of the relay KA1; the normally closed contact of the relay KA1, the normally open contact of the relay KA2 and the coil of the relay KA4 are connected in series Between the positive and negative poles of the power supply, the first normally open contact of the relay KA4 is also connected in parallel with the normally open contact of the relay KA2; the conversion switch (2-5) is used to selectively control the connection between the first branch and the second branch, the first normally closed contact of the relay KA3 and the second normally open contact of the relay KA4 in the first branch are connected in series, the start-stop switch (2-6) is provided in the second branch, and after the first branch and the second branch are connected in parallel, they are connected in series with the coil of the relay KA5 between the positive and negative poles of the power supply; the normally open contact of the relay KA5 and the coil of the contactor KM are connected in series between the positive and negative poles of the power supply; In the main control circuit, the power supply is connected to the motor (3-1) of the water supply pump (3) through the main circuit breaker (2-7) and the first normally open contact of the contactor KM.

2. The automatic water replenishment control device for underground water tank according to claim 1, characterized in that: The main control circuit is also provided with a thermal relay (2-8); In the secondary control circuit, the normally closed contact of the thermal relay (2-8), the normally open contact of the relay KA5 and the coil of the contactor KM are connected in series between the positive and negative poles of the power supply.

3. The automatic water replenishment control device for underground water tank according to claim 1 or 2, characterized in that: A water shortage indicator light (2-2) is also provided on the front panel of the box body (2-1); In the secondary control circuit, the water shortage indicator light (2-2) is connected in parallel with the coil of the relay KA2.

4. The automatic water replenishment control device for underground water tank according to claim 1 or 2, characterized in that: A full water indicator light (2-3) is also provided on the front panel of the box body (2-1); In the secondary control circuit, the full water indicator light (2-3) is connected in parallel with the coil of the relay KA1.

5. The automatic water replenishment control device for underground water tank according to claim 1 or 2, characterized in that: An operating indicator light (2-4) is also provided on the front panel of the box body (2-1); In the secondary control circuit, the second normally open contact of the contactor KM and the operation indicator light (2-4) are connected in series between the positive and negative poles of the power supply.

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