Mining permanent magnet water pump

Abstract

The utility model relates to a mining permanent magnet water pump which comprises a plurality of pump bodies, connecting frames are installed on the pump bodies, the adjacent pump bodies are fixedly connected through the connecting frames, a confluence pipe is installed between the adjacent pump bodies, water outlets of the pump bodies are communicated with the input end of the confluence pipe, and the output end of the confluence pipe is communicated with an output pipeline. A water level monitoring mechanism is installed on the pump body, the water level monitoring mechanism is electrically connected with a controller, the water level monitoring mechanism comprises a protective shell fixedly connected to the outer wall of the pump body, a water purification area is formed between the protective shell and the outer wall of the pump body, the lower end of the water purification area is open, and a water level monitor extending in the vertical direction is installed in the water purification area; the controller can control a plurality of water pumps at the same time, and the number of opened pump bodies can be adjusted according to the water level.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to the field of permanent magnet water pumps, and specifically refers to a mine permanent magnet water pump. Background Technique

[0002] At present, for the drainage of underground mining working faces and temporary drainage points in mine roadways in China, BQS / WQB mine explosion-proof submersible sand and sewage drainage electric pumps are mainly used. Traditional water pumps mostly adopt electromagnetic drive mode, and the impeller is rotated by the motor to realize the transportation of liquid. However, this method has many deficiencies, such as high energy consumption, high maintenance cost, serious noise pollution, etc. In addition, in the mining environment, due to the complex water quality, high sand content, strong corrosiveness and other characteristics, the sealing performance and durability of traditional water pumps also face severe challenges. In recent years, with the rapid development of permanent magnet material technology and frequency conversion control technology, permanent magnet water pumps have gradually come into people's view. The permanent magnet water pump uses permanent magnets as the magnetic field source, and the impeller is rotated by magnetic force, without the electromagnet and excitation current of the traditional motor, thus realizing high-efficiency energy saving and low-noise operation. At the same time, permanent magnet materials have excellent magnetic properties and stability, making the permanent magnet water pump also significantly improved in terms of reliability and durability.

[0003] The application document with the application number 2014103427494 provides a high-efficiency permanent magnet synchronous submersible water pump. Judging from the effects of years of on-site use in coal mines, it also has some technical problems, such as the motor often burns out and the pump body is damaged. In the face of a large amount of accumulated water, the drainage capacity of a single pump body is weak. Multiple pump bodies require multiple controllers for separate control and cannot be linked. It is necessary to manually observe the water level to ensure that the pump body does not run idle, which restricts the development of high-yield, high-efficiency and intelligent construction of mining work. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a mine permanent magnet water pump, and the controller can realize the simultaneous control of multiple water pumps and can adjust the number of pump bodies started according to the water level.

[0005] The utility model is realized by the following technical solutions. A mine permanent magnet water pump is provided, which includes a plurality of pump bodies. A connection frame is installed on the pump body, and adjacent pump bodies are fixedly connected through the connection frame. A confluence pipe is installed between adjacent pump bodies. The drainage port of the pump body is communicated with the input end of the confluence pipe. The output end of the confluence pipe is communicated with an output pipeline. A water level monitoring mechanism is installed on the pump body, and the water level monitoring mechanism is electrically connected to a controller.

[0006] The utility model is provided with multiple pump bodies for sewage discharge. Adjacent pump bodies can be firmly fixed together through a connecting frame. The confluence pipe can collect the sewage pumped by the pump bodies together and discharge it through an output pipe. By setting a water level monitoring mechanism to monitor the water level situation in real time and realizing intelligent control through a controller, automatic pump stop at low water level, operation of one water pump at medium water level, and simultaneous operation of multiple water pumps at high water level can be achieved. This helps to avoid idling or overloading of the water pumps and improve work efficiency at the same time.

[0007] As an optimization, the water level monitoring mechanism includes a protective shell fixedly connected to the outer wall of the pump body. A purified water area is formed between the protective shell and the outer wall of the pump body. The lower end of the purified water area is open. A water level monitor extending vertically is installed in the purified water area. A filter screen is provided at the lower end of the purified water area and is located below the water level detector. The setting of this optimized scheme effectively prevents impurities from interfering with and damaging the water level monitor, improves the accuracy and reliability of monitoring. At the same time, the setting of the filter screen further ensures the cleanliness of the water quality entering the purified water area.

[0008] As an optimization, the confluence pipe includes a pipe body. A number of branch channels are opened on the pipe body. The branch channels are arc-shaped. Each branch channel is communicated with a pump body. An output port is opened on the side wall of the pipe body. The branch channels merge at the output port. The setting of this optimized scheme uses the confluence pipe to collect the drainage ports of multiple pump bodies and realizes confluence through arc-shaped branch channels, reducing the water flow resistance and improving the drainage efficiency. At the same time, the arc-shaped setting can prevent the discharged sludge from directly flushing into another pump body when a single pump is operating.

[0009] As an optimization, the connecting frame includes a mounting plate fixed on the outer wall of the pump body. A connecting rod is rotatably connected to the mounting plate. The connecting rods between adjacent pump bodies are connected by dovetail tenons. The setting of this optimized scheme makes the connection between the pump bodies firm and flexible. This design is convenient for adjusting the layout and quantity of the pump bodies according to actual needs, enhancing the adaptability and expandability of the water pump.

[0010] As an optimization, a temperature sensor is installed in the permanent magnet motor of the pump body. The temperature sensor is electrically connected to the controller. The setting of this optimized scheme realizes real-time monitoring of the motor temperature. When the motor temperature is too high, the controller can take timely measures for protection to prevent the motor from being damaged by overheating, improving the safety and reliability of the water pump.

[0011] As an optimization, the controller is electrically connected to a timer. The setting of this optimized scheme, with the function of the timer electrically connected to the controller, enables the water pump to start and stop automatically according to a preset time, realizing unattended automatic operation. This helps to save labor costs, improve operation efficiency, and meet the usage requirements under different working conditions.

[0012] As an optimization, connecting rods are respectively connected to the front and rear ends of the mounting plate, and the two connecting rods are fixedly connected through a connecting frame. The setting of this optimization scheme enhances the overall stability of the connection frame, makes the connection between the pump bodies more firm and reliable, and can withstand greater working loads.

[0013] The beneficial effects of the present utility model are as follows: Through the modular design and the efficient flow-aggregating structure of the confluence pipe, the present utility model significantly improves the drainage efficiency of the water pump and the overall operation stability. The equipped water level monitoring mechanism and controller realize the intelligent monitoring and control of the water pump. The controller can control two pumps, automatically stop the pump at low water level, operate one pump at medium water level, and operate multiple pumps simultaneously at high water level. The controller automatically adjusts the operation state of the water pump according to the monitored data, improving the automation degree and operation efficiency of the system. By installing a temperature sensor in the permanent magnet motor, the real-time monitoring and protection of the motor temperature are realized, improving the safety and reliability of the water pump. The driving mode of using a permanent magnet motor plus a frequency converter control box can adjust the water pump flow and head according to the requirements of the use environment, with stronger adaptability. At the same time, a water level sensor is equipped to realize intelligent water supply and drainage on demand, providing a basic guarantee for the construction of the mine intelligent drainage system. Brief Description of the Drawings

[0014] Figure 1 It is a schematic structural view of the present utility model;

[0015] Figure 2 It is a schematic view of the structure of the water level monitoring mechanism;

[0016] Figure 3 It is a structural view of the confluence pipe;

[0017] Figure 4 It is a top view of the connection frame;

[0018] Figure 5 It is a schematic structural view of the pump body;

[0019] As shown in the figure:

[0020] 1. Pump body, 101. Suction port, 102. Impeller, 103. Pump shell, 104. Lower pump cover, 105. Lower mechanical seal, 106. Upper mechanical seal, 107. Oil filling port, 108. Lubricating oil chamber, 109. Lower bearing, 110. Main shaft, 111. Permanent magnet motor stator, 112. Permanent magnet motor rotor, 113. Permanent magnet motor housing, 114. Upper bearing, 115. Upper pump cover, 116. Cable connection chamber, 117. Hoisting ring, 118. Cable inlet, 119. Submersible cable, 2. Confluence pipe, 21. Pipe body, 22. Flange, 23. Branch channel, 3. Connection frame, 31. Mounting plate, 32. Connecting rod, 33. Dovetail tenon, 34. Rotating rod, 35. Connecting frame, 4. Water level monitoring mechanism, 41. Water level detector, 42. Protective shell, 43. Filter screen. Detailed implementation mode

[0021] To clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific implementation modes.

[0022] As Figures 1 to 5 shown, a permanent magnet water pump for mines of the present utility model includes a plurality of pump bodies 1. The pump bodies 1 are of the prior art. The pump body includes a pump housing 103. A permanent magnet motor is installed at the upper end of the pump housing 103. The permanent magnet motor includes a permanent magnet motor housing 113. The permanent magnet motor housing 113 is fixedly arranged at the upper end of the pump housing 103. A permanent magnet motor stator 111 is installed inside the permanent magnet motor housing. A permanent magnet motor rotor 112 is arranged inside the permanent magnet motor stator 111. The permanent magnet motor rotor is fixedly connected with a main shaft 110. An upper bearing 114 is installed at the upper end of the main shaft 110. A lower bearing 109 is installed at the lower end of the main shaft 110. The main shaft 110 is rotationally connected inside the permanent magnet motor housing 113 through the upper bearing and the lower bearing.

[0023] The lower end of the main shaft 110 extends into the pump housing 103. An impeller 102 located inside the pump housing 103 is fixedly connected to the lower end of the main shaft 110. A drain port is opened on the side wall of the pump housing. A water suction port 101 is opened on the lower end face of the pump housing. The water suction port is communicated with the drain port. The impeller is located at the junction of the drain port and the water suction port. A lower pump cover 104 is installed on the pump housing 103. The pump housing is fixedly connected with the permanent magnet motor housing through the lower pump cover. The main shaft passes through the lower pump cover. The main shaft is rotationally connected with the lower pump cover. A lower mechanical seal 105 is arranged between the main shaft and the lower pump cover. An upper mechanical seal 106 is arranged between the main shaft and the pump housing. A lubricating oil chamber 108 opened inside the pump housing is arranged between the lower bearing and the impeller. An oil injection port 107 is opened on the lubricating oil chamber. The lubricating oil inside the lubricating oil chamber 108 flows to the outer wall of the main shaft through the oil injection port 107.

[0024] An upper pump cover 115 is fixedly connected to the upper end of the permanent magnet motor housing 113. A lifting ring 117 is rotationally connected to the upper pump cover. A cable connection cavity 116 is opened inside the upper pump cover. A cable inlet 118 extending to the cable connection cavity 116 is opened on the upper end face of the upper pump cover. A submersible cable 119 is arranged inside the cable connection cavity 116. The submersible cable 119 passes through the cable inlet 118 and extends outside the upper pump cover 115.

[0025] There are two pump bodies 1. A connecting frame 3 is installed on the pump bodies 1. The adjacent pump bodies are fixedly connected through the connecting frame 3. The connecting frame includes a mounting plate 31 fixed on the outer wall of the pump body 1. The mounting plate extends in the horizontal direction. The outer end face of the mounting plate 31 is arc-shaped. The outer end face of the mounting plate 31 is fixedly attached to the outer wall of the pump body 1.

[0026] A connecting rod 32 is rotatably connected to the mounting plate. A connecting rod 32 is connected to each of the front and rear ends of the mounting plate. Rotating rods 34 extending in the front-rear direction are fixedly connected to the front and rear end faces of the mounting plate 31. The connecting rod is provided with a mounting hole extending in the front-rear direction, and the rotating rod is mounted in the mounting hole, so that the connecting rod 32 is rotatably connected to the mounting plate 31.

[0027] The connecting rods 32 between adjacent pump bodies are connected by a dovetail tenon 33. A tail tenon is fixedly provided at the right end of the left connecting rod, and a head tenon is fixedly provided at the left end of the right connecting rod. The tail tenon and the head tenon are cooperatively arranged to form a dovetail tenon 33. The two connecting rods on the same pump body are fixedly connected by a connecting frame 35. The connecting frame 35 extends in the front-rear direction. The front and rear ends of the connecting frame 35 are respectively fixedly connected to the inner end faces of the front and rear connecting rods.

[0028] A confluence pipe 2 is installed between adjacent pump bodies. The drainage port of the pump body 1 is communicated with the input end of the confluence pipe 2. The output end of the confluence pipe is communicated with an output pipeline. The confluence pipe includes a pipe body 21. The input ends of the confluence pipe are arranged at the left and right ends of the pipe body 21. An output port is provided on the side wall of the pipe body 21. The output port is the output end of the confluence pipe. The output port is arranged on the front end face of the pipe body 21. A plurality of branch channels 23 are provided on the pipe body 21. The branch channels 23 are arc-shaped. The branch channels extend from the input end to the output port. Each branch channel is communicated with a pump body 1. The branch channels converge at the output port. Flanges 22 are fixedly provided at the left and right ends of the pipe body 21. The pipe body is fixedly connected to the pump body 1 through the flanges 22.

[0029] A water level monitoring mechanism 4 is installed on the pump body 1. The water level monitoring mechanism is electrically connected to a controller. The water level monitoring mechanism includes a protective shell 42 fixedly connected to the outer wall of the pump body. The protective shell 42 includes a top plate, an inner plate, and side plates. The inner plate extends in the left-right direction, and the side plates extend in the front-rear direction. The inner ends of the two inner plates are fixedly connected by the side plates. The tops of the two inner plates and the side plates are fixedly connected by the top plate. The top plate extends to the outer wall of the pump body and is fixedly connected to the pump body. The outer end face of the side plate is fixedly connected to the outer wall of the pump body.

[0030] The controller adopts a variable frequency controller. The controller integrates detection, control, and protection. It realizes the man-machine dialogue function through a liquid crystal display and a keyboard. At the same time, it has a fault memory and a fault query function. Its phase loss, overload, short circuit and other protection functions are equipped with an RS-485 standard communication interface to realize communication with the upper computer of the monitoring system and have the "four remote" functions. It can be integrated into the mine intelligent network to realize unattended operation underground.

[0031] A water purification area is formed between the protective shell 42 and the outer wall of the pump body. The lower end of the water purification area is open. A water level monitor 41 extending vertically is installed in the water purification area. The water level detection supports a float type liquid level detector, a reed type liquid level detector, and a liquid level transmitter. In this embodiment, a float type liquid level detector is used. The water level monitor 41 is fixedly connected to the outer wall of the pump body 1. A filter screen 43 is provided at the lower end of the water purification area and below the water level detector. The filter screen 43 extends horizontally, and the filter screen extends to the inner wall of the protective shell and the outer wall of the pump body. The filter screen can prevent sediment and garbage from entering the water purification area.

[0032] A temperature sensor is installed in the permanent magnet motor of the pump body 1. The temperature sensor is fixedly connected to the housing 13 of the permanent magnet motor and contacts the stator winding of the permanent magnet motor stator 11. The temperature sensor is electrically connected to the controller. The controller reads the data of the temperature sensor to completely simulate the heating and cooling curve of the motor, making the protection of the motor more reliable and effective. The controller is electrically connected to a timer, and the timer can be used to realize the function of starting the pump regularly.

[0033] In the process of using this embodiment, each pump body can be used alone or in combination. The two pump bodies are connected together through a connecting frame 3, so that the tenons and mortises at the inner ends of the connecting rods on the two pump bodies are combined into a dovetail tenon. The two ends of the confluence pipe 2 are fixed on the pump body 1 through flanges, so that the two pump bodies are communicated with the confluence pipe. The water level detector 41 can detect the water level and feedback it to the controller. When the water level is low, the pump can be automatically stopped. When the water level is medium, the controller controls one pump body to operate. When the water level is high, the controller controls the two pump bodies to operate simultaneously.

[0034] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also fall within the scope of the claims of the present invention.

Claims

1. A permanent magnetic water pump for mining, comprising a plurality of pump bodies (1), characterized in that: A connecting frame (3) is installed on the pump body, adjacent pump bodies are fixedly connected via the connecting frame (3), a confluence pipe (2) is installed between adjacent pump bodies, a discharge port of the pump body (1) is connected to an input end of the confluence pipe (2), an output end of the confluence pipe is connected to an output pipeline, a water level monitoring mechanism (4) is installed on the pump body, and the water level monitoring mechanism is electrically connected to a controller.

2. A permanent magnetic water pump for mining according to claim 1, characterized in that: The water level monitoring mechanism comprises a protective shell (42) fixedly connected to the outer wall of the pump body, a water purification zone is formed between the protective shell and the outer wall of the pump body, the lower end of the water purification zone is open, a water level monitor (41) extending vertically is installed in the water purification zone, and a filter screen (43) located below the water level detector is provided at the lower end of the water purification zone.

3. A permanent magnetic water pump for mining according to claim 1, characterized in that: The converging pipe comprises a pipe body (21), a plurality of branch channels (23) are provided on the pipe body (21), the branch channels (23) are arc-shaped, each branch channel is connected to a pump body (1), an output port is provided on the side wall of the pipe body (21), and the branch channels merge at the output port.

4. A permanent magnetic water pump for mining according to claim 1, characterized in that: The connecting frame comprises a mounting plate (31) fixed on the outer wall of the pump body (1), a connecting rod (32) being rotatably connected to the mounting plate, and the connecting rods (32) between adjacent pump bodies are connected via dovetail tenons (33).

5. A permanent magnetic water pump for mining according to claim 1, characterized in that: A temperature sensor is installed in the permanent magnet motor of the pump body (1), and the temperature sensor is electrically connected to the controller.

6. A permanent magnetic water pump for mining according to claim 1, characterized in that: The controller is electrically connected to a timer.

7. A permanent magnetic water pump for mining according to claim 4, characterized in that: The front and rear ends of the mounting plate are respectively connected to a connecting rod (32), and the two connecting rods are fixedly connected via a connecting frame (35).

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