A bottomless valve water guide

Abstract

The utility model provides a kind of bottom valve water guide device. The bottom valve water guide device includes water tank, three-way pipe is equipped on the water tank, submersible pump water inlet for being connected with submersible pump, negative pressure water inlet for being connected with water sump suction pipeline, and main pipeline water replenishing port for being connected with main pipeline, first pipeline of three-way pipe is inserted into water tank inside, first ball valve for controlling the on-off of exhaust pipe way of vacuum pump is connected on second pipeline of three-way pipe, second ball valve for controlling water tank exhaust is connected on third pipeline of three-way pipe;Third ball valve for controlling the on-off of main pipeline is equipped on the main pipeline water replenishing port;Fourth ball valve for controlling the switch of submersible pump is equipped on the submersible pump water inlet. The utility model optimizes water guide device structure, can cancel the bottom valve of suction pipe end connected with water pump, effectively avoids the problem of long time, more leakage and other problems caused by the bottom valve when closing not strictly.

Description

Technical Field

[0001] This utility model relates to the field of mine drainage technology, and in particular to a bottomless water intake device. Background Technology

[0002] In mine water pumps, centrifugal blades typically generate centrifugal force by slinging water, creating negative pressure at the pump inlet. If the negative pressure is too low, well water cannot be drawn in, leading to pump burnout, inability to draw water, cavitation, and even motor burnout. Therefore, the pump must be filled with water before starting, requiring a priming device.

[0003] In mines, water pumps and water intake devices are equipped with foot valves, which are check valves that automatically close during priming to ensure successful priming. However, in practice, these foot valves often fail to close tightly, increasing the difficulty and time required for priming and increasing the risk of leakage. Utility Model Content

[0004] The purpose of this utility model is to provide a bottom valve-free water inlet device, eliminating the bottom valve and solving the problems of difficult and time-consuming water filling.

[0005] The technical solution of this utility model is: a bottomless water priming device, including a water tank, the water tank being provided with a three-way pipe, a submersible pump inlet for connection to a submersible pump, a negative pressure inlet for connection to a water tank suction pipe, and a main pipeline inlet for connection to a main pipeline. The first pipe of the three-way pipe extends into the water tank, the second pipe of the three-way pipe is connected to a first ball valve for controlling the opening and closing of the exhaust pipe of a vacuum pump, the third pipe of the three-way pipe is connected to a second ball valve for controlling the exhaust of the water tank; the main pipeline inlet is provided with a third ball valve for controlling the opening and closing of the main pipeline; and the submersible pump inlet is provided with a fourth ball valve for controlling the switching on and off of the submersible pump.

[0006] Preferably, the water tank is further provided with a monitoring tube, which is equipped with a negative pressure mechanical gauge for detecting negative pressure inside the water tank and a pressure sensor for detecting pressure inside the water tank.

[0007] Preferably, the water tank is equipped with a liquid level sensor, and the liquid level sensor is covered with a protective cover.

[0008] Preferably, a level gauge capable of displaying the liquid level inside the water tank is vertically installed on the side wall of the water tank.

[0009] Preferably, the bottom of the water tank is provided with a drain outlet, and a first blind flange is detachably installed at the drain outlet.

[0010] Preferably, the top of the water tank is provided with an observation window, and a second blind flange is detachably installed at the observation window.

[0011] Preferably, the lower end of the water tank is connected to a drain pipe, and a hand valve is provided on the drain pipe.

[0012] Preferably, the bottomless valve water inlet device further includes a water suction pipe, one end of which extends into the water tank, and the other end of which is located outside the water tank and is provided with a first connecting flange.

[0013] Preferably, the side wall of the water suction pipe extending into the water tank is surrounded by a filter screen.

[0014] Preferably, the lower end of the water tank is provided with supporting feet.

[0015] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0016] I. This utility model optimizes the structure of the water intake device and uses ball valves to achieve multi-mode water injection. It can eliminate the bottom valve at the end of the suction pipe connected to the water pump, effectively avoiding problems such as difficulty in water injection, long time, and excessive leakage when the bottom valve is not closed tightly. It greatly improves the operating stability of the water pump and the success rate of water injection.

[0017] Second, this utility model can realize four water intake modes: vacuum water intake, submersible pump water intake, main pipeline water intake, and mixed water intake. These modes can be combined in any way according to actual needs without affecting each other. Furthermore, when one mode fails and cannot be used, other modes can be used for water intake, thus improving the equipment's resilience and stability.

[0018] Third, the suction pipe of this utility model is directly surrounded by a filter screen, which can filter large particles of impurities in the water tank, reduce the impact on the water pump impeller, avoid water pump blockage, and effectively provide filtration and protection functions for the water pump.

[0019] IV. This utility model is equipped with a liquid level sensor on the water tank, which can monitor the water pump's suction condition in real time. When the liquid level in the water tank reaches the minimum level, an alarm is triggered to prompt the water pump to be shut down, so as to protect the water pump and prevent the water pump from burning out the motor by running under no-load.

[0020] 5. Installing a negative pressure mechanical gauge and a level gauge on the water tank allows for convenient observation of the internal condition of the water tank, providing convenience for inspection and use;

[0021] VI. A pressure sensor is installed on the water tank to monitor the pressure inside the water, effectively avoiding the risk of the water tank and suction pipe expelling air in time under abnormal conditions, which could lead to the tank and pipe bursting.

[0022] 7. A drain outlet and a manual valve are installed at the bottom of the water tank to drain the wastewater in a timely manner, clean the dirt inside the water tank, and also allow the inside of the water tank to be rinsed with high-pressure water through the observation window. Attached Figure Description

[0023] Figure 1 A schematic diagram of the bottomless valve water inlet device provided by this utility model;

[0024] Figure 2 A perspective view of the bottomless water inlet device provided by this utility model.

[0025] In the attached diagram: 1. Water tank; 2. Level gauge; 3. Suction pipe; 4. Support foot; 5. Drain outlet; 6. First blind flange; 7. First connecting flange; 8. Drain pipe; 9. Hand valve; 10. Protective cover; 11. Submersible pump inlet; 12. Second connecting flange; 13. T-pipe; 14. First ball valve; 15. Second ball valve; 16. Level sensor; 17. Observation window; 18. Second blind flange; 19. Monitoring pipe; 20. Pressure sensor; 21. Negative pressure mechanical gauge; 22. Third ball valve; 23. Main pipeline water inlet; 24. Fourth ball valve; 25. Negative pressure inlet. Detailed Implementation

[0026] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0027] like Figure 1 , Figure 2 As shown, the bottomless water priming device provided in this embodiment includes a water tank 1 and a suction pipe 3. The water tank 1 is used to store the liquid required when the water pump is started. The required volume of the water tank 1 is designed according to the water pump head and the length of the suction pipe.

[0028] The formula for calculating the effective volume of water tank 1 is:

[0029]

[0030] In the formula: V is the effective volume of the device; d is the diameter of the suction pipe; L is the length of the suction pipe; a1 is the pump head; a2 is the actual head; and β is the redundancy design factor of 2.5.

[0031] A level gauge 2 is vertically installed on the side wall of the water tank 1 to monitor changes in the internal liquid level. The level gauge 2 may be an acrylic visual level gauge, a glass tube level gauge, a magnetic level gauge, or a Koala level gauge, etc. One end of the suction pipe 3 extends into the water tank 1, and the other end is located outside the water tank 1 and is equipped with a first connecting flange 7, which connects to the suction port of the water pump. The side wall of the suction pipe 3 extending into the water tank 1 is enclosed by a filter screen. After the water pump starts, it draws wastewater from the water tank 1 through the suction pipe 3 and discharges it.

[0032] The lower end of the water tank 1 is equipped with a supporting foot 4 to support the entire water intake device and achieve fixed installation. The bottom of the water tank 1 has a drain outlet 5, which is covered by a first blind flange 6. A drain pipe 8 is connected to the bottom of the water tank 1, and a hand valve 9 is installed on the drain pipe 8. An observation window 17 is provided at the top of the water tank 1, and a second blind flange 18 is installed at the observation window 17. The second blind flange 18 is a transparent plate.

[0033] When the water intake device needs maintenance, first open the hand valve 9 to drain the liquid in the water tank 1 through the drain pipe 8. Then open the first blind flange 6 and clean the impurities deposited inside the water tank 1 through the drain port 5. At the same time, the second blind flange 18 can be opened to rinse the inside of the water tank 1 with clean water through the observation window 17, thereby achieving the purpose of cleaning the impurities inside the water tank 1.

[0034] The water tank 1 is equipped with a liquid level sensor 16, which can be a float, radar, ultrasonic, or radio frequency admittance sensor, etc. Alternatively, it can be a negative pressure sensor, laser rangefinder, liquid level switch, proximity switch, etc.

[0035] The liquid level sensor 16 is externally fitted with a protective cover 10. The protective cover 10 prevents water flow from damaging the liquid level sensor 16 and also stabilizes the detected liquid level, ensuring stable data. The liquid level sensor 16 is used by the water priming device to determine pump start-up conditions, monitor changes in the liquid level in the water tank 1 during operation, and provide protection during operation. When the liquid level sensor 16 detects that the liquid level in the water tank 1 has reached the pump start-up height, it sends a signal to start the water pump. During the pumping process, the liquid level sensor 16 monitors changes in the liquid level in the water tank 1. If the liquid level in the water tank 1 deviates from the normal operating level or reaches the minimum operating level, the control system issues an alarm, prompting the pump to be shut down. The control system is a circuit board equipped with a buzzer, electrically connected to the liquid level sensor 16, pressure sensor 20, and each ball valve.

[0036] The water tank 1 is equipped with a three-way pipe 13, a submersible pump inlet 11 for connection to the submersible pump, a negative pressure inlet 25 for connection to the water tank suction pipe (not shown), and a main pipeline replenishment inlet 23 for connection to the main pipeline. A second connecting flange 12 is provided at the negative pressure inlet 25.

[0037] The first pipe of the three-way pipe 13 extends into the water tank 1. A first ball valve 14 for controlling the opening and closing of the vacuum pump's exhaust pipe is connected to the second pipe of the three-way pipe 13. A second ball valve 15 for controlling the exhaust of the water tank 1 is connected to the third pipe of the three-way pipe 13. A third ball valve 22 for controlling the opening and closing of the main pipeline is provided on the main pipeline inlet 23. A fourth ball valve 24 for controlling the submersible pump's on / off state is provided on the submersible pump inlet 11.

[0038] When the bottomless valve priming device requires a negative pressure priming process, open the first ball valve 14 to connect the vacuum pump (not shown), and close the second ball valve 15, the third ball valve 22, and the fourth ball valve 24. The vacuum pump draws away the gas inside the water tank 1 to create a negative pressure, and then the pressure difference allows the liquid in the water tank to enter the water tank 1 through the water tank suction pipe and the negative pressure inlet 25. When the liquid level inside the water tank 1 reaches the pump start value, close the first ball valve 14 to disconnect the vacuum pump. Start the water pump, and draw water out through the suction pipe 3.

[0039] The second ball valve 15 is used to vent air from the water tank 1 and pipeline during the water injection process of the water priming device, so as to avoid the risk of the tank and pipeline bursting due to untimely venting. When the water priming device uses a submersible pump for water injection, main pipeline water injection, or a combination of main pipeline and submersible pump water injection process, the second ball valve 15 must be opened to remove the air inside the water tank 1.

[0040] The water tank 1 is also equipped with a monitoring tube 19, which is equipped with a negative pressure mechanical gauge 21 for detecting the negative pressure inside the water tank 1 and a pressure sensor 20 for detecting the internal pressure of the water tank 1. When the negative pressure water replenishment mode is activated, the data from the pressure sensor 20 is connected to the control system. When the negative pressure reaches the set value and the liquid level in the water tank 1 does not reach the required water level within the set time, the buzzer sounds an alarm and the vacuum pump stops running.

[0041] The main pipeline inlet 23 on the water tank 1 is used to implement the main pipeline water supply mode. In use, the third ball valve 22 and the second ball valve 15 are opened, while the first ball valve 14 and the fourth ball valve 24 are closed. Liquid inside the main pipeline enters the water tank 1 through the main pipeline inlet 23. When the liquid level in the water tank 1 reaches the pump start-up level, the third ball valve 22 and the second ball valve 15 are closed, and the water pump is started to drain the water.

[0042] The submersible pump inlet 11 is used to implement the submersible water replenishment mode. In use, the fourth ball valve 24 and the second ball valve 15 are opened, while the first ball valve 14 and the third ball valve 22 are closed. The submersible pump starts, filling water into the water tank 1 through the inlet 11. When the water level in the tank 1 reaches the pump start-up level, the fourth ball valve 24 and the second ball valve 15 are closed, and the pump is started to drain the water.

[0043] If mixed water replenishment is required, open the fourth ball valve 24, the third ball valve 22, and the second ball valve 15, and close the first ball valve 14. Liquid in the main pipeline enters the water tank through the main pipeline replenishment port 23, and the submersible pump fills the water tank 1 through the submersible pump inlet 11. When the liquid level in the water tank 1 reaches the pump start-up level, close the fourth ball valve 24, the third ball valve 22, and the second ball valve 15, and start the pump to drain the water.

[0044] Before starting the pump, the bottom valve-less priming device purges air from the pump, suction pipe, and water tank, and fills them with liquid to create a sealed environment, preventing the pump impeller from running dry before startup. Once the pump starts and draws water, a negative pressure is created in the water tank, increasing the pump's suction head and water supply capacity. The device also features four auxiliary starting methods: vacuum pump priming, submersible pump priming, main pipeline makeup water, and mixed makeup water. These can be used individually or simultaneously to reduce pump start-up preparation time.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bottomless water priming device, comprising a water tank (1), characterized in that, The water tank (1) is provided with a three-way pipe (13), a submersible pump inlet (11) for connection to the submersible pump, a negative pressure inlet (25) for connection to the water tank suction pipe, and a main pipeline inlet (23) for connection to the main pipeline. The first pipe of the three-way pipe (13) extends into the water tank (1). The second pipe of the three-way pipe (13) is connected to a first ball valve (14) for controlling the opening and closing of the exhaust pipe of the vacuum pump. The third pipe of the three-way pipe (13) is connected to a second ball valve (15) for controlling the exhaust of the water tank (1). The main pipeline inlet (23) is provided with a third ball valve (22) for controlling the opening and closing of the main pipeline. The submersible pump inlet (11) is provided with a fourth ball valve (24) for controlling the switching of the submersible pump.

2. The bottomless valve water priming device according to claim 1, characterized in that, The water tank (1) is also equipped with a monitoring tube (19), which is equipped with a negative pressure mechanical gauge (21) for detecting the negative pressure inside the water tank (1) and a pressure sensor (20) for detecting the pressure inside the water tank (1).

3. The bottomless valve water priming device according to claim 1, characterized in that, The water tank (1) is equipped with a liquid level sensor (16), and the liquid level sensor (16) is covered with a protective cover (10).

4. The bottomless valve water priming device according to claim 1, characterized in that, The water tank (1) is vertically equipped with a level gauge (2) that can display the liquid level inside the water tank (1).

5. The bottomless valve water priming device according to claim 1, characterized in that, The bottom of the water tank (1) is provided with a drain port (5), and a first blind flange (6) is detachably installed at the drain port (5).

6. The bottomless valve water priming device according to claim 1, characterized in that, The top of the water tank (1) is provided with an observation window (17), and a second blind flange (18) is detachably installed at the observation window (17).

7. The bottomless valve water priming device according to claim 1, characterized in that, The lower end of the water tank (1) is connected to a drain pipe (8), and a hand valve (9) is provided on the drain pipe (8).

8. The bottomless valve water priming device according to claim 1, characterized in that, It also includes a water suction pipe (3), one end of which extends into the water tank (1), and the other end of which is located outside the water tank (1) and is provided with a first connecting flange (7).

9. The bottomless valve water priming device according to claim 8, characterized in that, The side wall of the water suction pipe (3) extending into the water tank (1) is surrounded by a filter screen.

10. The bottomless valve water priming device according to claim 1, characterized in that, The lower end of the water tank (1) is provided with a supporting foot (4).

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