CN219061961U - Automatic start-stop device and automatic start-stop system for mine pump - Google Patents

Abstract

The utility model relates to an automatic start-stop device and an automatic start-stop system of a mine pump, wherein the automatic start-stop device of the mine pump comprises a controller, a water level sensor, a temperature detection piece and a waterproof structure; the temperature detection part is connected to the pump body to detect the temperature of the pump body, and the waterproof structure is positioned at the periphery of the temperature detection part; the water level sensor is used for detecting the water level height in the mine, and the controller is electrically connected with the pump body, the water level sensor and the temperature detection piece; the controller is used for controlling the start and stop of the pump body according to the water level detected by the water level sensor, and is used for controlling the pump body to stop when the temperature of the pump body detected by the temperature detecting element exceeds a preset threshold value in the pumping process of the pump body. The controller can control the start and stop of the pump body according to the water level in the mine, so that the automatic control of the start and stop of the pump body is realized, the pump body is further controlled to continue to operate or stop according to the temperature of the pump body, overheat protection is carried out on the pump body, and the pump body is prevented from being burnt out when the working temperature of the pump body is too high.

Description

Automatic start-stop device and automatic start-stop system for mine pump

Technical Field

The disclosure relates to the technical field of starting and stopping of mining pumps, in particular to an automatic starting and stopping device and an automatic starting and stopping system of a mine pump.

Background

The pump for mine is a mine machinery, is commonly used for the water pumping and draining operation of mine, and mainly comprises a mine submersible pump, a mine centrifugal pump and the like.

However, in the actual operation process of the mine pump, the start and stop of the pump are usually controlled manually, and because the working state of the mine pump is difficult to be adjusted in real time by a worker according to the height of the water level in the mine, and the mine pump can generate heat when working for a long time, the mine pump is damaged by heat, and the normal use of the mine pump is affected.

Disclosure of Invention

In order to solve the technical problems or at least partially solve the technical problems, the disclosure provides an automatic start-stop device and an automatic start-stop system of a pump for a mine.

In a first aspect, the present disclosure provides an automatic start-stop device for a mine pump, comprising a controller, a water level sensor, a temperature detecting member, and a waterproof structure;

the temperature detection piece is used for being connected to a pump body for pumping out water in the mine so as to detect the temperature of the pump body; the waterproof structure is positioned at the periphery of the temperature detection piece and is used for performing waterproof protection on the temperature detection piece;

the water level sensor is used for being arranged in the mine and detecting the water level height in the mine; the controller is electrically connected with the pump body, the water level sensor and the temperature detection piece, and is used for controlling the start and stop of the pump body according to the water level height detected by the water level sensor, and is used for controlling the pump body to stop when the temperature detection piece detects that the temperature of the pump body exceeds a preset threshold value in the pumping process of the pump body.

Optionally, the temperature detecting element includes a normally closed temperature switch, and the temperature switch is detachably disposed on the housing of the pump body.

Optionally, the temperature detecting element is fixed on the pump body through colloid adhesion.

Optionally, the colloid comprises a thermally conductive silica gel.

Optionally, the waterproof structure includes a waterproof cover, and the waterproof cover may be covered on the temperature detecting member to waterproof and protect the temperature detecting member.

Optionally, the waterproof cover is of a square structure, a cavity is arranged on the square structure, an opening is arranged on a cavity wall of the cavity, and the temperature detection part can enter the cavity through the opening so as to sleeve the square structure on the periphery of the temperature detection part;

the edge of the square body structure at the opening is in sealing abutting connection with the shell of the pump body, and the square body structure is provided with an avoidance hole through which a lead on the temperature detection piece can pass; the conducting wire and the hole wall of the avoidance hole are arranged in a sealing mode.

Optionally, the square body structure is detachably connected with the housing of the pump body.

Optionally, the water level sensor comprises a float switch;

the number of the floating ball switches is at least two, at least two floating ball switches are positioned at different heights in the mine, and the floating ball switches are positioned above the water inlet of the pump body;

each floating ball switch is connected with the controller and the temperature detection piece in series to form a main circuit, a first contactor is connected in parallel to the floating ball switch at the uppermost part of the mine, and a second contactor is connected in series to the main circuit.

In a second aspect, the present disclosure provides an automatic start-stop system for a mine pump, comprising a pump body and an automatic start-stop device for the mine pump as described above;

the pump body is electrically connected with an automatic start-stop device of the mine pump; the pump body is provided with a water inlet and a water outlet, the water inlet stretches into the bottom of the mine, and the water outlet is positioned at the outer side of the mine.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

according to the automatic start-stop device and the automatic start-stop system for the mine pump, the controller, the water level sensor, the temperature detection piece and the waterproof structure are arranged, the temperature detection piece is connected to the pump body to detect the temperature of the pump body, and the waterproof structure is arranged on the periphery of the temperature detection piece to conduct waterproof protection on the temperature detection piece; enabling the water level sensor to detect the water level in the mine; meanwhile, the controller is electrically connected with the pump body, the water level sensor and the temperature detection part, so that the controller can control the start and stop of the pump body according to the water level detected by the water level sensor, and the pump body is controlled to stop when the temperature detection part detects that the temperature of the pump body exceeds a preset threshold value in the pumping process of the pump body. That is, the controller can control the start and stop of the pump body according to the water level height, thereby facilitating the use of the pump body and realizing the automatic control of the start and stop of the pump body. Meanwhile, in the running process of the pump body, the pump body can be further controlled to continue to run or stop according to the detection result of the temperature detection part on the temperature of the pump body, overheat protection is carried out on the pump body, the problems that the pump body burns out and the like when the working temperature of the pump body is too high are prevented, and the safety of the pump body and the automatic start-stop device of the whole mine pump is guaranteed. Meanwhile, the waterproof structure is arranged on the periphery of the temperature detection part, so that the temperature detection part is protected from being waterproof, the normal use of the temperature detection part is prevented from being influenced by the fact that water enters the inside of the temperature detection part, and the automatic start-stop device of the whole mine pump and the normal use of the pump body are further ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of an automatic start-stop system for a mine pump according to an embodiment of the disclosure;

FIG. 2 is a schematic view of a part of the structure of an automatic start-stop device of a pump for mines according to an embodiment of the disclosure;

fig. 3 is a control circuit diagram of an automatic start-stop device of a mine pump according to an embodiment of the present disclosure.

Wherein, 1, a controller; 2. a water level sensor; 21. a float switch; 3. a temperature detecting member; 4. a waterproof structure; 41. a waterproof cover; 411. a cavity; 5. a pump body; 51. a pump body; 52. a water inlet pipe; 53. a water outlet pipe; 6. a first contactor; 7. a second contactor; 8. a mine; 9. a water inlet; 10. and a water outlet.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Example 1

Referring to fig. 1 to 3, the present embodiment provides an automatic start-stop device for a mine pump, which specifically includes a controller 1, a water level sensor 2, a temperature detecting member 3, and a waterproof structure 4.

Wherein the temperature detecting member 3 is used for being connected to the pump body 5 for pumping out water in the mine so as to detect the temperature of the pump body 5; the waterproof structure 4 is located at the periphery of the temperature detecting member 3 and is used for performing waterproof protection on the temperature detecting member 3.

Meanwhile, the water level sensor 2 is used for being arranged in a mine and used for detecting the water level in the mine 8, the controller 1 is electrically connected with the pump body 5, the water level sensor 2 and the temperature detection piece 3, the controller 1 can control the start and stop of the pump body 5 according to the water level detected by the water level sensor 2, and the controller is used for controlling the pump body 5 to stop when the temperature detection piece 3 detects that the temperature of the pump body 5 exceeds a preset threshold value in the pumping process of the pump body 5. The pump body 5 in this embodiment mainly includes a submersible pump, a centrifugal pump, etc., and of course, the pump body can be expanded into other mining pumps.

That is, by causing the water level sensor 2 to detect the water level in the mine 8, the start and stop of the pump body 5 are controlled based on the detected water level result. For example, when the water level is at the first level, the pump body 5 is started to pump water, and when the water level is reduced from the first level to the second level, the pump body 5 is stopped to pump water as the pumping process is continued. That is, when the water level in the mine is set within a certain range, the water pump 5 can pump water.

Meanwhile, since the temperature of the pump body 5 is continuously increased during operation, the surface temperature of the pump body 5 is detected by the temperature detecting member 3, and the pump body 5 is controlled to stop when the detected temperature exceeds a preset threshold.

For example, a preset threshold value of the temperature and a water level threshold value may be stored in the controller 1 in advance, and only when the detection result of the water level sensor 2 matches the water level threshold value, the controller 1 can control and activate the pump body 5, so that the pump body 5 can perform the water pumping and draining operation normally. Meanwhile, in the whole process of water pumping and draining, when the detection result of the temperature detection piece 3 is not more than a preset threshold value, the pump body 5 can always keep normal operation, and only when the detected temperature exceeds the preset threshold value, the controller 1 can control the pump body 5 to stop.

The setting like this, controller 1 can control the start-stop of the pump body 5 according to the water level height, has made things convenient for the use of the pump body 5 to realize the automated control that the pump body 5 started to stop. Meanwhile, in the running process of the pump body 5, the pump body 5 can be further controlled to continue to run or stop according to the detection result of the temperature detection part 3 on the temperature of the pump body 5, overheat protection is carried out on the pump body 5, the problem that the pump body 5 burns out and the like when the working temperature of the pump body 5 is too high is prevented, and the safety of the pump body 5 and the automatic start-stop device of the whole mine pump is guaranteed. That is, the automatic start-stop device of the mine pump is arranged, so that the pump body 5 has high automation degree and safe use when in use.

Meanwhile, the waterproof structure 4 is arranged, and the waterproof structure 4 is arranged on the periphery of the temperature detection piece 3 to prevent the temperature detection piece 3 from being waterproof, so that water is prevented from entering the inside of the temperature detection piece 3 to influence the normal use of the temperature detection piece 3, and the automatic start-stop device of the whole mine pump and the normal use of the pump body 5 are further ensured.

According to the automatic start-stop device of the mine pump, provided by the embodiment, the controller 1, the water level sensor 2, the temperature detection piece 3 and the waterproof structure 4 are arranged, the temperature detection piece 3 is connected to the pump body 5 to detect the temperature of the pump body 5, and the waterproof structure 4 is arranged on the periphery of the temperature detection piece 3 to waterproof and protect the temperature detection piece 3; the water level sensor 2 is capable of detecting the water level in the mine 8; meanwhile, the controller 1 is electrically connected with the pump body 5, the water level sensor 2 and the temperature detection part 3, so that the controller 1 controls the start and stop of the pump body 5 according to the water level detected by the water level sensor 2, and controls the pump body 5 to stop when the temperature detection part 3 detects that the temperature of the pump body 5 exceeds a preset threshold value in the pumping process of the pump body 5. That is, the controller 1 controls the start and stop of the pump body 5 according to the water level, which facilitates the use of the pump body 5, thereby realizing the automatic control of the start and stop of the pump body 5. Meanwhile, in the running process of the pump body 5, the pump body 5 can be further controlled to continue to run or stop according to the detection result of the temperature detection part 3 on the temperature of the pump body 5, overheat protection is carried out on the pump body 5, the problem that the pump body 5 burns out and the like when the working temperature of the pump body 5 is too high is prevented, and the safety of the pump body 5 and the automatic start-stop device of the whole mine pump is guaranteed. Meanwhile, the waterproof structure 4 is arranged, and the waterproof structure 4 is arranged on the periphery of the temperature detection piece 3 to prevent the temperature detection piece 3 from being waterproof, so that water is prevented from entering the inside of the temperature detection piece 3 to influence the normal use of the temperature detection piece 3, and the automatic start-stop device of the whole mine pump and the normal use of the pump body 5 are further ensured.

In particular, the temperature detecting member 3 is made to include a normally closed temperature switch, and the temperature switch is detachably provided on the housing of the pump body 5.

By setting the temperature detecting member 3 as a normally closed temperature switch, that is, when the pump body 5 is operating normally, the contacts of the normally closed temperature switch are in a closed state, so that the circuit in which the normally closed temperature switch is located is turned on. That is, as long as the water level in the mine 8 reaches a state where the pump body 5 is normally operated, the pump body 5 can be started, so that the pump body 5 can normally perform the water pumping and draining operation.

When the temperature rises to a preset threshold value, the contacts of the normally-closed temperature switch are automatically in an open state, so that a loop where the normally-closed temperature switch is located is cut off, the controller 1 controls the controller 1 to close the pump body 5 to stop pumping and draining water, and an overheat protection effect is achieved on the pump body 5. Meanwhile, when the temperature is reduced to be smaller than a preset threshold value, the contacts of the normally-closed temperature switch can be automatically closed.

The temperature detection piece 3 is simple in structure and convenient to acquire, so that the structure and the connecting line of the automatic start-stop device of the pump for the whole mine are simplified to a certain extent, and the use of the automatic start-stop device of the pump for the whole mine is facilitated.

By way of example, the normal running temperature of the pump body 5 is about 30 ℃ through repeated experiments, when the accumulated water in the mine 8 is pumped out, the temperature reaches about 50 ℃ after the pump body 5 stops water supply, and the pump stop temperature is the optimal pump stop temperature, and the pump stop can not cause the damage of the water pump at the moment, so a temperature control switch at 50 ℃ is used.

Of course, in other embodiments, the temperature detecting member 3 may be configured as a temperature sensor, where the controller 1 can compare the detection result of the temperature sensor with a preset threshold value, so as to switch on or off the entire serial circuit of the controller 1, the water level sensor 2 and the temperature detecting member 3 according to the detection result of the temperature sensor and combine the detection result of the water level sensor 2, and make the pump body 5 perform the start-stop operation.

Meanwhile, as the temperature switch is detachably connected with the pump body 5, when one of the temperature switch and the pump body 5 is damaged, only the damaged part needs to be replaced, so that the integral scrapping of the temperature switch and the pump body 5 is avoided, and the integral use cost of the temperature switch and the pump body 5 is saved to a certain extent.

In some embodiments, the temperature detecting element 3 is fixed to the pump body 5 by heat-resistant glue. The temperature detecting element 3 is stuck and fixed on the pump body 5 through heat-resistant colloid, on one hand, the fixing mode of the temperature detecting element 3 is simple and easy to operate; on the other hand, through making the colloid have heat resistance, can be when the work of the pump body 5 generates heat, the colloid still has better viscidity to paste temperature-detecting element 3 on the pump body 5 steadily, guaranteed the effect of pasting of temperature-detecting element 3 on the pump body 5, and guaranteed the accuracy of the temperature-detecting result of the pump body 5 to a certain extent.

Wherein the colloid comprises heat conduction silica gel.

By setting the colloid as the heat-conducting silica gel, the colloid not only has good heat resistance and adhesiveness, but also has good heat conduction performance, excellent cold-hot alternating resistance, aging resistance and electrical insulation performance. The setting like this, the performance of colloid is excellent, stable, and can be with the effective timely when transmitting the temperature on the pump body 5 to the temperature detection spare 3, accurate when transmitting the temperature to the temperature contact of temperature detection spare 3 to the pump body 5 surface.

Of course, the colloid may be a common high temperature resistant colloid.

In some embodiments, the waterproof structure 4 includes a waterproof cover 41, and the waterproof cover 41 may be covered on the temperature detecting member 3 to waterproof and protect the temperature detecting member 3.

The waterproof structure 4 is simple in structure, convenient to use and good in waterproof protection effect on the temperature detection piece 3.

Illustratively, after the temperature detecting member 3 is connected to the casing of the pump body 5, the waterproof cover 41 may be covered above the temperature detecting member 3, so that the temperature detecting member 3 may be protected to a certain extent, and water such as rainwater is prevented from entering the inside of the temperature detecting member 3.

Naturally, the waterproof structure 4 may be a waterproof film or the like.

Specifically, the waterproof cover 41 is a square structure, and the square structure is provided with a cavity 411, the cavity wall of the cavity 411 is provided with an opening, and the temperature detecting member 3 can enter the cavity 411 through the opening, so that the square structure is sleeved on the periphery of the temperature detecting member 3. Simultaneously, the edge of the opening part of the square body structure is in sealing butt with the shell of the pump body 5, and the square body structure is provided with an avoidance hole through which a lead on the temperature detection piece 3 can pass, and the lead and the hole wall of the avoidance hole are arranged in a sealing way.

Through setting up buckler 41 into square structure, and square structure has the opening to after the temperature-detecting piece 3 is connected on the casing of the pump body 5, make temperature-detecting piece 3 get into the cavity 411 of square structure through the opening, and make the sealed butt of the edge of buckler 41 of opening part and the casing of the pump body 5, thereby make buckler 41 can overlap and establish in the periphery of temperature-detecting piece 3, and increased the protection scope of buckler 41 to temperature-detecting piece 3 to a certain extent, improved the protection effect to temperature-detecting piece 3.

Through making the junction sealing butt of opening edge and the shell of the pump body 5 for the leakproofness between buckler 41 and the pump body 5 is good, so when can avoiding buckler 41 and the pump body 5, water gets into the inside of temperature detection spare 3 through the junction of buckler 41 and the shell of the pump body 5, has protected temperature detection spare 3 etc. has avoided the appearance of the condition that temperature detection spare 3 etc. damaged because of intaking to a certain extent, makes the automatic start-stop device of whole mine pump normally use.

Meanwhile, through the avoidance holes formed in the square body structure, when the square body structure is sleeved on the periphery of the temperature detection piece 3, the wires on the temperature detection piece 3 can be smoothly penetrated out, and the wires connected to the temperature detection piece 3 are convenient to run.

During implementation, the aperture of the avoidance hole can be matched with the outline size of the wire, so that the wire can be positioned to a certain extent. By sealing the conducting wire with the hole wall of the avoidance hole, the sealing performance between the square structure and the pump body 5 is further ensured.

Wherein the waterproof cover 41 is detachably connected with the housing of the pump body 5. Thus, the waterproof cover 41 is conveniently connected with the pump body 5, and when the temperature detecting member 3 is in a problem, the waterproof cover 41 can be detached from the temperature detecting member 3 to expose the temperature detecting member 3 to the outside, so that the temperature detecting member 3 is convenient for an operator to replace or maintain.

Meanwhile, as the waterproof cover 41 is detachably connected with the shell of the pump body 5, when one of the waterproof cover 41 and the pump body 5 is damaged, only the damaged part needs to be replaced, so that the integral rejection of the waterproof cover 41 and the pump body 5 is avoided, and the integral use cost of the waterproof cover 41 and the pump body 5 is saved to a certain extent.

Referring to fig. 1, the water level sensor 2 specifically includes a normally open float switch 21. The number of the float switches 21 is at least two, at least two float switches 21 are located at different heights in the mine 8, and the float switches 21 are all located above the water inlet 9 of the pump body 5. Each float switch 21 is connected in series with the controller 1 and the temperature detecting element 3 to form a main circuit, and the float switch 21 at the uppermost part of the mine 8 is connected in parallel with a first contactor 6 which is normally open, and the main circuit is connected in series with a second contactor 7 which is normally open.

Illustratively, the float switch 21 at a high position in the mine 8 is simply referred to as an a switch, the float switch 21 at a low position in the mine 8 is simply referred to as a B switch, the pump body 5 is started when the liquid level in the mine 8 is higher than the height of the a switch, and the pump body 5 is stopped when the liquid level is lower than the height of the B switch.

The specific control circuit is shown in fig. 3, and the working principle of the control circuit is as follows: when the liquid level is higher than the switch B, the normally open contact of the switch B is closed, when the liquid level continues to rise until the liquid level is higher than the switch A, the normally open contact of the switch A is closed, the coil of the first contactor 6 is electrified, the normally open contact of the first contactor 6 is closed, the first contactor 6 is self-locked, meanwhile, the main contact of the second contactor 7 in the main circuit is closed, and the pump body 5 is started.

When the liquid level is lower than the switch A, the pump body 5 can not stop due to the self-locking state of the first contactor 6, and when the liquid level is lower than the switch B, the normally open contact of the switch B is opened due to the reset of the switch B, the coil of the first contactor 6 is powered off, the main contact of the second contactor 7 is opened, and the pump body 5 can stop, so that the purpose of controlling the fluctuation of the liquid level between the switch B and the switch A is achieved.

Meanwhile, in the whole water pumping and draining process of the pump body 5, the temperature detection part 3 detects the temperature of the pump body 5, when the temperature of the pump body 5 is higher than a preset threshold value, the controller 1 controls the pump body 5 to stop working, and when the temperature of the pump body 5 falls below the preset threshold value, the start and stop of the pump body 5 are controlled according to the states of the switch A and the switch B.

Of course, in some embodiments, a normally open float switch 21, abbreviated as a C switch, may be further disposed near the pump body of the mine 8. The height of the C switch is located between the pump body 5 and the height of the B switch. Since the pump body 5 is only activated when the water level in the well 8 is above switch a, and the pump body 5 is deactivated when the water level in the well 8 is below switch B. Therefore, the C switch is always positioned in water, namely, is always in a closed state, so as to protect the circuit of the automatic start-stop device of the pump for the whole mine.

Of course, the water level sensor 2 may also be a pressure sensor, and the pressure sensor is placed at the bottom of the mine 8 to sense the weight of water in the mine 8 in real time, and the size of the mine 8, the density of water and the weight of water are related to the height of the water level in the mine 8, so that the detection result of the pressure sensor can be converted into the water level in the mine 8.

Meanwhile, the controller 1 compares the water level result of the mine 8 detected by the pressure sensor with a water level threshold value, and controls the pump body 5 to start or stop operation according to the water level detection result.

Example two

The embodiment provides an automatic start-stop system of a mine pump, which comprises a pump body 5 and an automatic start-stop device of the mine pump. The pump body 5 is electrically connected with an automatic start-stop device of the mine pump.

The pump body 5 is provided with a water inlet 9 and a water outlet 10, the water inlet 9 extends into the mine 8 and is arranged at one side close to the bottom of the mine 8, and the water outlet 10 is positioned at the outer side of the mine 8.

Illustratively, in specific use, the pump body 5 is electrically connected to an automatic start-stop device for the mine pump, and the start-stop of the pump body 5 is automatically controlled according to the difference in the water level height in the mine 8 and the temperature of the pump body 5 according to the above description.

In some embodiments, referring to fig. 1, the pump body 5 includes a pump body 51, a water inlet pipe 52, and a water outlet pipe 53, the pump body 5 has an inlet and an outlet, one end of the water inlet pipe 52 is connected to the inlet, and the other end of the water inlet pipe 52 extends into the bottom of the mine 8 and is formed as a water inlet 9; one end of the water outlet pipe 53 is connected with an outlet, and the other end of the water outlet pipe 53 forms the water outlet 10. The waterproof structure 4 is specifically provided on the pump body 51.

The water pump drainage device is simple in structure and convenient to operate, and the water pump drainage device is used for pumping water in the mine 8 through the water inlet pipe 52 and the water outlet pipe 53.

The specific structure and implementation principle of the automatic start-stop device of the mine pump in this embodiment are the same as those of the automatic start-stop device of the mine pump provided in the first embodiment, and the same or similar technical effects can be brought, and the description of the first embodiment can be referred to specifically.

Other technical features are the same as those of the first embodiment, and can bring about the same or similar technical effects, and are not described in detail herein, and specific reference can be made to the description of the above embodiments.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An automatic start-stop device of a mine pump is characterized by comprising a controller (1), a water level sensor (2), a temperature detection piece (3) and a waterproof structure (4);

the temperature detection piece (3) is used for being connected to the pump body (5) for pumping out water in the mine (8) so as to detect the temperature of the pump body (5); the waterproof structure (4) is positioned at the periphery of the temperature detection piece (3) and is used for performing waterproof protection on the temperature detection piece (3);

the water level sensor (2) is used for being arranged in the mine (8) and detecting the water level in the mine (8); the controller (1) is electrically connected with the pump body (5), the water level sensor (2) and the temperature detection piece (3), and the controller (1) is used for controlling the start and stop of the pump body (5) according to the water level height detected by the water level sensor (2), and controlling the pump body (5) to stop when the temperature detection piece (3) detects that the temperature of the pump body (5) exceeds a preset threshold value in the pumping process of the pump body (5).

2. The automatic start-stop device of a pump for mines according to claim 1, characterized in that said temperature detecting member (3) comprises a normally closed temperature switch detachably provided on the casing of said pump body (5).

3. The automatic start-stop device of a pump for mines according to claim 1, characterized in that said temperature detecting element (3) is fixed on said pump body (5) by glue adhesion.

4. An automatic start-stop device for a mine pump as set forth in claim 3 wherein said gel comprises thermally conductive silica gel.

5. The automatic start-stop device of a mine pump according to claim 1, characterized in that the waterproof structure (4) comprises a waterproof cover (41), and the waterproof cover (41) is covered on the temperature detecting member (3) to waterproof and protect the temperature detecting member (3).

6. The automatic start-stop device of a mine pump according to claim 5, wherein the waterproof cover (41) is of a square structure, a cavity (411) is arranged on the square structure, an opening is arranged on the cavity wall of the cavity (411), and the temperature detection piece (3) can enter the cavity (411) through the opening so as to sleeve the square structure on the periphery of the temperature detection piece (3);

the edge of the square structure at the opening is in sealing abutting connection with the shell of the pump body (5), and the square structure is provided with an avoidance hole through which a lead on the temperature detection piece (3) can pass; the conducting wire and the hole wall of the avoidance hole are arranged in a sealing mode.

7. An automatic start-stop device for a pump for mines according to claim 6, characterized in that said square structure is detachably connected to the housing of said pump body (5).

8. The automatic start-stop device of a pump for mines according to any one of claims 1 to 7, characterized in that said water level sensor (2) comprises a float switch (21);

the number of the floating ball switches (21) is at least two, at least two floating ball switches (21) are positioned at different heights in the mine (8), and each floating ball switch (21) is positioned above the water inlet (9) of the pump body (5);

each float switch (21) is connected with the controller (1) and the temperature detection piece (3) in series to form a main circuit, a first contactor (6) is connected in parallel to the float switch (21) at the uppermost part of the mine (8), and a second contactor (7) is connected in series to the main circuit.

9. An automatic start-stop system of a pump for mines, characterized by comprising a pump body (5) and an automatic start-stop device of a pump for mines according to any one of claims 1 to 8;

the pump body (5) is electrically connected with an automatic start-stop device of the mine pump; the pump body (5) is provided with a water inlet (9) and a water outlet (10), the water inlet (9) stretches into the bottom of the mine (8), and the water outlet (10) is positioned on the outer side of the mine (8).

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