Water pump automatic water diversion device suitable for high-altitude coal mine
By introducing a third negative pressure pipe and a pressure-transforming chamber into the water pump priming device, combined with an electric exhaust valve and PLC control, the problems of difficult water pump startup and electrical failures in high-altitude areas were solved, achieving efficient and stable water pump operation.
Patent Information
- Application Number
- CN202511465460.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2025-11-21
AI Technical Summary
Existing water pump priming devices suffer from insufficient suction lift due to reduced air pressure in high-altitude areas, pump start-up with air, high noise, severe vibration, and easy failure of electrical components, failing to meet the continuous drainage needs of high-altitude coal mines.
A third negative pressure pipe is used to increase the internal and external pressure difference. Combined with the electric air vent valve and the pressure transformer chamber of the water pump, the electric water supply valve and the air vent valve are controlled by the PLC program to ensure that the gas in the pump body is discharged before the water pump starts. The water level is detected by mechanical principle to avoid electrical component failure.
It improves the starting efficiency and operational stability of water pumps, suppresses cavitation, enhances the adaptability and control reliability of the device, and reduces equipment operation and maintenance costs.
Smart Images
Figure CN120990841A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of water pump water guiding device, and particularly relates to a water pump automatic water guiding device suitable for high-altitude coal mines. BACKGROUND
[0002] Coal mine drainage mainly relies on the central pump house water pump to complete, and the stable and reliable coal mine drainage is an important index of coal mine safety production, and a safe and efficient water pump water guiding device is an important link for the rapid start and reliable operation of the water pump. In high-altitude areas, the atmospheric pressure is significantly lower than that in low-altitude areas, and higher requirements are put forward for the suction capacity, cavitation suppression effect and environmental adaptability of the water guiding device. However, the existing water pump water guiding device is mainly designed based on the conventional low-altitude working condition, and the limitations of the structure and function design are gradually highlighted in the special application scene of high-altitude coal mines, and it is difficult to match the strict demand of continuous and uninterrupted drainage of coal mine production. The existing water guiding device matched with the coal mine water pump has the following technical defects: on the one hand, there is no special structure to actively improve the pressure difference inside and outside the device. In the high-altitude environment, during the start and operation of the water pump, the suction capacity will be insufficient, the water resistance will be too large, and the flow will be attenuated due to the decrease of air pressure. At the same time, the water pump is prone to cavitation phenomenon due to water level fluctuation or local pressure being too low, which aggravates the wear of water pump parts, intensifies the vibration, noise and heating of the water pump during operation, seriously shortens the service life of the water pump and reduces the working efficiency of the water pump. On the other hand, before the water pump starts, the existing water pump water guiding device cannot completely discharge the residual gas in the pump body, causing the water pump to start with gas, which is large in vibration, noise and cavitation damage, and reduces the starting efficiency of the water pump. Thirdly, the existing water pump water guiding device mainly uses electric elements to detect the water level. In the harsh working conditions of coal mine underground, such as humidity, dust and electromagnetic interference, the electric elements are prone to failure, which leads to disorder of the water guiding control logic and frequent shutdown of the water pump, increases the equipment operation and maintenance cost, and even has potential impact on the safety production of coal mines. Therefore, the present application proposes a water pump automatic water guiding device suitable for high-altitude coal mines to solve the problems in the prior art. SUMMARY
[0003] In view of the above problems, the present application provides a water pump automatic water guiding device suitable for high-altitude coal mines. The water pump automatic water guiding device suitable for high-altitude coal mines adopts a third negative pressure pipe, increases the pressure difference inside and outside the water guiding device, improves the suction capacity, and makes the water guiding device more suitable for high-altitude working sites. At the same time, the third negative pressure pipe ensures that the inside of the water guiding device is always full of water during operation, and the water level is higher than that of the water pump body, which effectively suppresses the cavitation phenomenon of the water pump. The water pump electric exhaust valve and the water pump exhaust pipe are adopted to ensure that the gas in the pump body is completely discharged outside before the water pump starts, the pump body is full of water, and the starting efficiency of the water pump is improved.
[0004] In order to achieve the purpose of the present application, the present application is realized by the following technical solutions: A kind of automatic water guide device for high-altitude coal mine water pump, including drainage cavity and the water suction cavity of being arranged in the upper of drainage cavity, pressure change cavity, the water suction pipe and manual water replenishment valve are connected on the water suction cavity, and water pump electric exhaust valve, electric exhaust valve and manual exhaust valve are connected;The outside of pressure change cavity is connected with electric water replenishment valve, and sealing cavity body is arranged in pressure change cavity, which is composed of upper cavity and lower cavity, the upper cavity and lower cavity are separated by sealing diaphragm, and the electromagnetic switch for detecting the position of sealing diaphragm is arranged in the lower cavity;Drainage cavity is communicated with water suction cavity, and drainage pipe and access hole are arranged on drainage cavity; It also includes first negative pressure pipe, second negative pressure pipe and third negative pressure pipe, for forming pressure difference between drainage cavity, water suction cavity and pressure change cavity and controlling water level, opening and closing of electric water replenishment valve and water pump electric exhaust valve, electric exhaust valve are automatically controlled by PLC program, to complete automatic water guide.
[0005] Further improvement lies in that the electric water replenishment valve is connected with external water replenishment system through water replenishment pipe.
[0006] Further improvement lies in that the pressure change cavity is internally provided with variable-diameter water replenishment pipe, and the large-diameter end of the variable-diameter water replenishment pipe is connected with the electric water replenishment valve, and the small-diameter end of the variable-diameter water replenishment pipe leads to the drainage cavity.
[0007] Further improvement lies in that one end of the first negative pressure pipe is communicated with the variable-diameter water replenishment pipe, and the other end of the first negative pressure pipe leads to the drainage cavity.
[0008] Further improvement lies in that one end of the second negative pressure pipe is communicated with the lower cavity, and the other end of the second negative pressure pipe is communicated with the first negative pressure pipe.
[0009] Further improvement lies in that the third negative pressure pipe is arranged inside the drainage cavity, one end of the third negative pressure pipe is communicated with the drainage pipe, and the other end of the third negative pressure pipe extends to the inside of the water suction cavity in the form of elbow pipe.
[0010] Further improvement lies in that a wave-preventing pipe is arranged inside the drainage cavity, the upper end of the wave-preventing pipe is fixed to the top of the drainage cavity, the lower end of the wave-preventing pipe is arranged in the drainage cavity, and the first negative pressure pipe is arranged inside the wave-preventing pipe.
[0011] Further improvement lies in that one end of the drainage pipe is connected with the water suction port of the water pump through flange, and the other end of the drainage pipe extends to above the bottom of the inside of the drainage cavity through elbow pipe.
[0012] Further improvement lies in that the electric exhaust valve is connected with exhaust pipe, for discharging gas outside the device.
[0013] Further improvement lies in that the water pump electric exhaust valve is connected with water pump exhaust pipe, and the other end of the water pump exhaust pipe is connected with the water pump, for discharging gas in the water pump.
[0014] The beneficial effects of the present application are: 1、The third negative pressure pipe is adopted, the pressure difference inside and outside the water guiding device is increased, the suction range is improved, the water guiding device is more suitable for high altitude work sites, the water level inside the water guiding device is always higher than the pump body of the water pump at all times, the cavitation phenomenon of the water pump is effectively inhibited, the water pump electric exhaust valve and the water pump exhaust pipe are adopted, the gas in the pump body is completely discharged outside before the water pump starts, the pump body is filled with water, and the starting efficiency of the water pump is improved.
[0015] 2、The variable pressure chamber is adopted, the water level value in the drainage chamber is detected by using mechanical principles and fluid mechanics principles, the water level in the drainage chamber can be controlled by adjusting the length of the first negative pressure pipe, it is sensitive and reliable, frequent failures of electrical components are avoided, and the stability and reliability of the water guiding device control are improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a front view of the present application; Figure 2 is a left side view of the present application; Figure 3 is a right side view of the present application; Figure 4 is a front end view of the present application; Figure 5 is a Figure 4 A-A sectional view of the present application; Figure 6 is a Figure 4 structure view of the present application at I; Figure 7 is a top view of the present application.
[0017] 1、drainage chamber; 2、water suction chamber; 3、variable pressure chamber; 4、water suction pipe; 5、manual water replenishment valve; 6、water pump electric exhaust valve; 7、electric exhaust valve; 8、manual exhaust valve; 9、electric water replenishment valve; 10、upper chamber; 11、lower chamber; 12、sealing diaphragm; 13、electromagnetic switch; 14、drainage pipe; 15、manhole; 16、first negative pressure pipe; 17、second negative pressure pipe; 18、third negative pressure pipe; 19、water replenishment pipe; 20、variable diameter water replenishment pipe; 21、anti-wave pipe; 22、water pump; 23、exhaust pipe; 24、water pump exhaust pipe. DETAILED DESCRIPTION
[0018] In order to deepen the understanding of the present application, the present application will be further described below in combination with examples, and the present examples are only used to explain the present application and do not constitute a limitation on the protection scope of the present application.
[0019] Example one According to Figure 1 , 2, 3, 4, 5, 6, 7, the embodiment proposes a kind of automatic water guide device of high-altitude coal mine water pump suitable for, including drainage cavity 1 and being located in the water suction cavity 2 of drainage cavity 1 top, pressure change cavity 3, the water suction pipe 4 and manual water replenishment valve 5 are connected on the water suction cavity 2, and are connected with water pump electric exhaust valve 6, electric exhaust valve 7 and manual exhaust valve 8;The outside of pressure change cavity 3 one side is connected with electric water replenishment valve 9, and pressure change cavity 3 is equipped with the sealed cavity body by upper cavity 10 and lower cavity 11 in, the upper cavity 10 and lower cavity 11 are separated by sealing diaphragm 12, the lower cavity 11 is equipped with electromagnetic switch 13 for detecting the position of sealing diaphragm 12;Drainage cavity 1 is communicated with water suction cavity 2, and drainage cavity 1 is equipped with drain pipe 14 and access hole 15; It also includes first negative pressure pipe 16, second negative pressure pipe 17 and third negative pressure pipe 18, for forming pressure difference between drainage cavity 1, water suction cavity 2 and pressure change cavity 3 and controlling water level, the opening and closing of electric water replenishment valve 9 and water pump electric exhaust valve 6, electric exhaust valve 7 are automatically controlled by PLC program, and automatic water guide is completed.
[0020] The electric water replenishing valve 9 is connected to the external water replenishing system through the water replenishing pipe 19. The variable-diameter water replenishing pipe 20 is arranged in the variable-pressure chamber 3, and the large-diameter end of the variable-diameter water replenishing pipe 20 is connected to the electric water replenishing valve 9, and the small-diameter end of the variable-diameter water replenishing pipe 20 is connected to the water drainage chamber 1. One end of the first negative pressure pipe 16 is communicated with the variable-diameter water replenishing pipe 20, and the other end of the first negative pressure pipe 16 is communicated with the water drainage chamber 1. One end of the second negative pressure pipe 17 is communicated with the lower chamber 11, and the other end of the second negative pressure pipe 17 is communicated with the first negative pressure pipe 16. The third negative pressure pipe 18 is arranged in the water drainage chamber 1, one end of the third negative pressure pipe 18 is communicated with the water drainage pipe 14, and the other end of the third negative pressure pipe 18 extends into the water suction chamber 2 in a bent pipe shape. When the water level in the water drainage chamber 1 does not overflow the port of the first negative pressure pipe 16, because the water flow rate increases and the pressure decreases when the water flows from the large-diameter pipe water replenishing pipe 19 into the small-diameter variable-diameter water replenishing pipe 20, a part of the gas in the water drainage chamber 1 flows into the water drainage chamber 1 through the first negative pressure pipe 16 and the variable-diameter water replenishing pipe 20, and is discharged through the electric exhaust valve 7, at this time, the pressure of the upper chamber 10 and the lower chamber 11 is the same, and the sealing diaphragm 12 is in a balanced state. When the water replenishing overflows the port of the first negative pressure pipe 16, the gas in the water drainage chamber 1 no longer flows into the first negative pressure pipe 16, at this time, the gas in the lower chamber 11 flows into the water drainage chamber 1 through the second negative pressure pipe 17, the first negative pressure pipe 16, the variable-diameter water replenishing pipe 20, and is discharged through the electric exhaust valve 7, the lower chamber 11 forms a negative pressure, and the sealing diaphragm 12 deforms downward under the pressure difference between the upper chamber 10 and the lower chamber 11, and touches the electromagnetic switch 13, the electromagnetic switch 13 outputs a signal, and the PLC controller closes the electric water replenishing valve 9, the electric exhaust valve 7 and the water pump electric exhaust valve 6, at this time, the water diversion device is in a closed state and the automatic water diversion process of the water pump 22 is completed, and the water pump 22 is in a standby state. When the water pump 22 is started, the liquid in the water drainage chamber 1 is first sucked away, the liquid level in the water drainage chamber 1 is lowered to form a negative pressure, and a pressure difference is formed between the water drainage chamber 1 and the atmosphere outside the water drainage chamber 1, under the action of the pressure difference, the water in the water suction well flows into the water drainage chamber 1, when the water discharged through the water drainage pipe 14 and the water sucked through the water suction pipe 4 reach a balance, the liquid in the water drainage chamber 1 is at a relatively balanced position. Because the water flow rate in the water drainage pipe 14 is large and the pressure is small, the gas in the upper part of the liquid level in the water drainage chamber 1 is discharged through the third negative pressure pipe 18 and the water drainage pipe 14, the pressure in the water drainage chamber 1 is reduced, the pressure difference between the inside and outside of the water drainage chamber 1 is further increased, the water flow rate in the water suction pipe 4 is greater than that in the water drainage pipe 14, the liquid level in the water drainage chamber 1 rises, and a new balance is reached until the port of the third negative pressure pipe 18 is submerged.
[0021] The inside of the drainage cavity 1 is provided with a wave-preventing pipe 21, the upper end of which is fixed to the top of the drainage cavity 1, and the lower end of which is placed inside the drainage cavity 1, and the first negative pressure pipe 16 is arranged inside the wave-preventing pipe 21. The wave-preventing pipe plays a role of wave flattening, preventing the water wave in the drainage cavity 1 from being too large during the water supplementing process, and preventing the wave crest from overflowing the port of the first negative pressure pipe 16 to make a false appearance of the water being fully supplemented and send a false action signal, and also preventing the impact of the water wave in the drainage cavity 1 on the sealing diaphragm 12, the electromagnetic switch 13 and the core components of the negative pressure pipe during the operation of the device, and ensuring the normal work of the sealing diaphragm 12, the electromagnetic switch 13 and the core components of the negative pressure pipe.
[0022] One end of the drainage pipe 14 is connected with the water suction port of the water pump 22 through a flange, and the other end of the drainage pipe 14 extends to above the bottom of the inside of the drainage cavity 1 through an elbow pipe. The electric exhaust valve 7 is connected with an exhaust pipe 23 for exhausting the gas outside the device. The water pump electric exhaust valve 6 is connected with a water pump exhaust pipe 24, and the other end of the water pump exhaust pipe 24 is connected with the water pump 22 for exhausting the gas in the water pump 22.
[0023] Example Two According to Figure 1 , 2 , 3, 4, 5, 6, 7, the present embodiment proposes an automatic water guiding device for a water pump used in a high-altitude coal mine, which comprises the following processes: In use, the control process is automatically completed under the control of the PLC program. First, the PLC controller opens the electric water supplement valve 9, the electric exhaust valve 7 and the water pump electric exhaust valve 6. Water enters the drainage cavity 1 through the water supplement pipe 19, the electric water supplement valve 9 and the variable-diameter water supplement pipe 20, and the gas in the drainage cavity 1 is discharged through the water suction cavity 2, the electric exhaust valve 7 and the exhaust pipe 23. The liquid in the drainage cavity 1 enters the water pump 22 pump body through the drainage pipe 14, and the gas in the water pump 22 pump body is discharged into the water suction cavity 2 through the water pump exhaust pipe 24 and the water pump electric exhaust valve 6, and then discharged through the electric exhaust valve 7 and the exhaust pipe 23. The drainage cavity 1 is higher than the water pump 22 pump body, and before the drainage cavity 1 is filled with liquid, the water pump 22 pump body is already filled with liquid and all the gas in the pump body is discharged. When the water level in the drainage cavity 1 does not overflow the first negative pressure pipe 16 port, since the flow rate of water flowing from the large-diameter pipe water supplement pipe 19 into the small-diameter variable-diameter water supplement pipe 20 is large and the pressure is small, part of the gas in the drainage cavity 1 flows into the drainage cavity 1 through the first negative pressure pipe 16 and the variable-diameter water supplement pipe 20 and is discharged through the electric exhaust valve 7, at this time the upper cavity 10 and the lower cavity 11 have the same pressure, and the sealing diaphragm 12 is in a balanced state. When the water supplement overflows the first negative pressure pipe 16 port, the gas in the drainage cavity 1 no longer flows into the first negative pressure pipe 16, at this time the gas in the lower cavity 11 flows into the drainage cavity 1 through the second negative pressure pipe 17, the first negative pressure pipe 16, the variable-diameter water supplement pipe 20 and is discharged through the electric exhaust valve 7, and the lower cavity 11 forms a negative pressure. Under the action of the pressure difference between the upper cavity 10 and the lower cavity 11, the sealing diaphragm 12 deforms downward and touches the electromagnetic switch 13, the electromagnetic switch 13 outputs a signal, the PLC controller closes the electric water supplement valve 9, the electric exhaust valve 7 and the water pump electric exhaust valve 6, at this time the water diversion device is in a closed state and the automatic water diversion process of the water pump 22 is completed, and the water pump 22 is in a standby state. When the water pump 22 starts, the liquid in the drainage cavity 1 is first sucked away, the liquid level in the drainage cavity 1 drops to form a negative pressure, and a pressure difference is formed between the gas in the drainage cavity 1 and the atmospheric pressure outside the drainage cavity 1. Under the action of the pressure difference, the water in the water suction well flows into the drainage cavity 1. When the water discharged through the drainage pipe 14 and the water sucked through the water suction pipe 4 reach a balance, the liquid in the drainage cavity 1 is at a relatively balanced position. Since the flow rate of water in the drainage pipe 14 is large and the pressure is small, the gas in the upper part of the liquid level in the drainage cavity 1 is discharged through the third negative pressure pipe 18 and the drainage pipe 14, which reduces the pressure in the drainage cavity 1 and further increases the pressure difference between the inside and outside of the drainage cavity 1, so that the water flow in the water suction pipe 4 is greater than the water flow in the drainage pipe 14, the liquid level in the drainage cavity 1 rises, and until the third negative pressure pipe 18 port is submerged, a new balance is reached. When the water pump 22 stops running, the PLC controller opens the electric water supplement valve 9, the electric exhaust valve 7 and the water pump electric exhaust valve 6, the pressure inside and outside the water suction pipe 4 is the same, the liquid in the water suction pipe 4 flows back to the water suction well under the action of gravity, and the liquid in the drainage cavity 1 remains in the drainage cavity 1 under the action of gravity, and the control system repeats the above water supplement and exhaust process.
[0024] The automatic water guiding device for high-altitude coal mine water pump adopts the third negative pressure pipe 18, increases the pressure difference inside and outside the water guiding device, improves the suction, makes the water guiding device more suitable for high-altitude working site, at the same time, makes the water level inside the water guiding device always higher than the pump body of the water pump 22, effectively inhibits the cavitation phenomenon of the water pump 22, adopts the water pump electric exhaust valve 6 and the water pump exhaust pipe 24, ensures that the gas inside the pump body is completely discharged outside before the water pump 22 starts, the pump body is full of water, improves the starting efficiency of the water pump 22. At the same time, the variable pressure chamber 3 is adopted, the water level value in the drainage chamber 1 is detected by using the mechanical principle and the fluid mechanics principle, the water level in the drainage chamber 1 can be controlled by adjusting the length of the first negative pressure pipe 16, which is sensitive and reliable, avoids the frequent failure of the electrical components, and improves the stability and reliability of the water guiding device control.
[0025] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A kind of automatic water guide device for high-altitude coal mine water pump, including drainage cavity (1) and the water suction cavity (2) being arranged in the upper of drainage cavity (1), pressure changing cavity (3), it is characterized by: The water suction cavity (2) is connected with a water suction pipe (4) and a manual water supplement valve (5), and is connected with a water pump electric exhaust valve (6), an electric exhaust valve (7) and a manual exhaust valve (8); one side of the pressure changing cavity (3) is connected with an electric water supplement valve (9), and the pressure changing cavity (3) is internally provided with a sealed cavity composed of an upper cavity (10) and a lower cavity (11), the upper cavity (10) and the lower cavity (11) are separated by a sealing diaphragm (12), and the lower cavity (11) is internally provided with an electromagnetic switch (13) for detecting the position of the sealing diaphragm (12); the drainage cavity (1) is communicated with the water suction cavity (2), and the drainage cavity (1) is provided with a drainage pipe (14) and an inspection hole (15); It also includes a first negative pressure pipe (16), a second negative pressure pipe (17) and a third negative pressure pipe (18) for forming a pressure difference and controlling the water level between the drainage cavity (1), the water suction cavity (2) and the pressure changing cavity (3), and automatically controlling the opening and closing of the electric water supplement valve (9), the water pump electric exhaust valve (6) and the electric exhaust valve (7) through a PLC program to complete automatic water diversion.
2. The automatic water guiding device for high-altitude coal mine water pump according to claim 1, characterized in that: The electric water supplement valve (9) is connected with an external water supplement system through a water supplement pipe (19).
3. The automatic water guiding device for high-altitude coal mine water pump according to claim 1, characterized in that: The pressure changing cavity (3) is internally provided with a variable-diameter water supplement pipe (20), and the large-diameter end of the variable-diameter water supplement pipe (20) is connected with the electric water supplement valve (9), and the small-diameter end of the variable-diameter water supplement pipe (20) leads to the drainage cavity (1).
4. The automatic water guiding device for high-altitude coal mine water pump according to claim 3, characterized in that: One end of the first negative pressure pipe (16) is communicated with the variable-diameter water supplement pipe (20), and the other end of the first negative pressure pipe (16) leads to the drainage cavity (1).
5. The automatic water guiding device for high-altitude coal mine water pump according to claim 4, characterized in that: One end of the second negative pressure pipe (17) is communicated with the lower cavity (11), and the other end of the second negative pressure pipe (17) is communicated with the first negative pressure pipe (16).
6. The automatic water guiding device for high-altitude coal mine water pump according to claim 5, characterized in that: The third negative pressure pipe (18) is arranged in the drainage cavity (1), one end of the third negative pressure pipe (18) is communicated with the drainage pipe (14), and the other end of the third negative pressure pipe (18) extends to the inside of the water suction cavity (2) in a bent pipe shape.
7. The automatic water guiding device for high-altitude coal mine water pump according to claim 1, characterized in that: The inside of the drainage cavity (1) is provided with a wave prevention pipe (21), the upper end of the wave prevention pipe (21) is fixed to the top of the drainage cavity (1), the lower end of the wave prevention pipe (21) is arranged in the drainage cavity (1), and the first negative pressure pipe (16) is arranged in the inside of the wave prevention pipe (21).
8. The automatic water guiding device for high-altitude coal mine water pump according to claim 1, characterized in that: One end of the drainage pipe (14) is connected with the water suction port of a water pump (22) through a flange, and the other end of the drainage pipe (14) extends to the top above the bottom of the inside of the drainage cavity (1) through a bent pipe.
9. The automatic water guiding device for high-altitude coal mine water pump according to claim 1, characterized in that: The electric exhaust valve (7) is connected with an exhaust pipe (23) for exhausting gas outside the device.
10. The automatic water guiding device for high-altitude coal mine water pump according to claim 1, characterized in that: The water pump electric exhaust valve (6) is connected with a water pump exhaust pipe (24), and the other end of the water pump exhaust pipe (24) is connected with the water pump (22) for exhausting gas in the water pump (22).