A water pump device with separated vacuum water extraction and water pump delivery power

Abstract

A water pump device with vacuum water diversion separated from water pump delivery power includes a water pump, the water pump is connected to a water diversion pipe, the water diversion pipe is provided with a branch pipe, the branch pipe and the water diversion pipe are provided with a common drive shaft, one end of the drive shaft is connected to a driven wheel, the driven wheel is connected to an electromagnetic clutch via a belt, the electromagnetic clutch is connected to a main shaft on the water pump, and the other end of the drive shaft is connected to a water pumping device provided in the water diversion pipe; the main shaft is partially inside the water pump and partially outside the water pump, and the main shaft outside the water pump is connected to the electromagnetic clutch. The present invention adopts a branch pipe structure, the drive shaft is connected to the main shaft on the water pump via an electromagnetic clutch, providing power for the water pumping device, and pumping water quickly, with a large flow rate and high head. The pumped water enters the water pump through the water diversion pipe, completing the vacuum pumping work of the water pump, and then the clutch separates the drive shaft from the main shaft on the water pump, and the water pump begins the water pumping function of the water flow, realizing the separation of vacuum pumping and water pump delivery power.

Description

Technical Field

[0001] The present invention relates to a water pump device, in particular to a water pump device with vacuum water extraction and water pump delivery power separated. Background Art

[0002] Water pumps are essential devices used in production and operations to transport media such as water. Firefighting water pumps require fast response times and high initial head. Initial head refers to the maximum depth a pump can pump. Existing firefighting water pumps typically operate by placing a pipe in water, starting the pump to create a vacuum, and then allowing water to enter the pump at atmospheric pressure to begin pumping. This results in a relatively slow response time. Currently, submersible pumps are placed directly into the water to pump water, reducing the vacuuming process. Submersible pumps are driven by two methods: one uses a flexible shaft driven by the pump's main shaft, and the other uses a motor placed directly in the water. Of these two drive methods, the flexible shaft method rotates with the pump's main shaft during the pumping process, resulting in a very short service life and frequent failures. The other method, which uses a motor placed directly in the water, carries the risk of electrical leakage and limited motor power due to pipe diameter. This makes it difficult to meet the high initial head requirements required by firefighting efforts and is only suitable for water sources below 5 meters deep.

[0003] Chinese invention patent No. 2011800327041 discloses a pumping device with a flexible shaft, comprising a pumping device for ensuring the transfer of fluids, such as gases and liquids, from one location to another; an outer flexible conduit forming a closed volume between a first suction area (A) and a target area (B); a flexible shaft for transmitting rotational power of the pumping device, the flexible shaft transmitting the rotational power to at least one impeller; and a plurality of centering components for ensuring the flexible shaft is centered and / or positioned within the outer flexible conduit. This structure requires the flexible shaft to rotate simultaneously with the pumping device for a long period of time. A fire pump structure capable of achieving rapid water pumping at depths exceeding 7 meters has been the subject of research by those skilled in the art. Summary of the Invention

[0004] The invention provides a water pump device which has low failure rate, high initial lift and short pumping response time and is capable of separating vacuum water extraction and water pump delivery power.

[0005] A water pump device with vacuum water extraction and water pump delivery power separated includes a water pump, the water pump is connected to a water diversion pipe, the water diversion pipe is provided with a branch pipe, the branch pipe and the water diversion pipe are provided with a same drive shaft, a connector at one end of the drive shaft is connected to a driven wheel, the driven wheel is connected to an electromagnetic clutch via a belt, the electromagnetic clutch is connected to a main shaft on the water pump, and the other end of the drive shaft is connected to a pumping device provided in the water diversion pipe; a part of the main shaft is inside the water pump, and the other part is outside the water pump, the main shaft outside the water pump is connected to the electromagnetic clutch; the water diversion pipe and the branch pipe form a relatively closed space. This type of water pump device uses a branch pipe on the water diversion pipe. The water diversion pipe serves as the main pipe for the water pump to pump water, and the branch pipe serves as the power pipe for vacuuming the water diversion. The main shaft on the water pump drives the pumping device through the drive shaft to pump water to the water pump. The water diversion pipe and the branch pipe form a relatively closed space, which can quickly complete the vacuum function of the water pump. After the vacuum function of the water pump is completed, the water pump automatically switches to the pumping function. The water pump stops rotating by shutting off the drive shaft through the electromagnetic clutch, and the pumping device stops pumping water to reduce the failure rate. Since the power of this pumping device is not underwater, its power can be adjusted by the output ratio of the driven wheel to adjust the output power of the drive shaft, achieving initial high head performance and avoiding the problem of insufficient pumping head of the motor submersible pump.

[0006] One end of the water diversion pipe is connected to the water pump, and the other end is connected to the pumping device. The pumping device includes at least one propeller and a guide vane cast integrally with the tubular shell. The propeller is connected to the drive shaft through the pump shaft. The rotation of the propeller transports the water through the guide vane and upward along the water diversion pipe.

[0007] Part of the drive shaft is located in the water conduit, while the other part is located in the branch conduit. This allows the drive shaft to have an independent power source, preventing it from rotating with the water pump main shaft for a long period of time and reducing the failure rate. Both the water conduit and the branch conduit are provided with a centering component for clamping the drive shaft. The centering component comprises two semicircular pieces, each provided with a semicircular flange surface. An integral, vertically arranged semicircular sleeve is located in the middle of the flange surface, and the semicircular sleeve has radial connection holes. Water holes are provided on the horizontal surface of the flange surface. This centering component has a simple structure and is easy to connect. Without affecting the movement of water, the drive shaft is placed between the water conduit and the branch conduit, achieving power output for the propeller.

[0008] A bend is provided between the water pump and the water diversion pipe; the length of the water diversion pipe is greater than 7 meters, achieving the initial high lift performance of the water pump device of the present invention.

[0009] The water diversion pipeline comprises a first pipe section connected to the branch pipe. The first pipe section's opening is connected to the second pipe section via a centering component that clamps the drive shaft. The second pipe section's opening is connected to the pumping device via a flange. This segmented water diversion pipeline is more convenient for portability and installation of the drive shaft and centering component.

[0010] The pumping device also includes a tubular housing, the inner wall of which is fitted with a propeller disposed vertically and a guide vane integrally cast with the tubular housing. The propeller is located at the bottom of the tubular housing, and the middle of the propeller is connected to a pump shaft via a connecting pin. The pump shaft is connected to a limit nut outside the bottom of the propeller, and the top of the pump shaft is connected to a drive shaft via a screw. The tubular housing encloses the guide vane and propeller within the pumping device, forming an unpowered submersible pump.

[0011] The guide vanes are connected to the pump shaft via a mechanical seal. The seal comprises a first sealing sleeve, a sealing cover plate, and a second sealing sleeve. The two sealing cover plates are located above and below the guide vanes, and a bearing for the pump shaft is located between the sealing cover plates and the impeller. The sealing cover plates are connected to the guide vanes via setscrews. This mechanical seal effectively prevents the pump shaft from seizing due to environmental factors, extending the service life of the mechanical seal.

[0012] The first sealing sleeve is located between the sealing cover plate on the lower side of the impeller and the propeller; the second sealing sleeve is located above the sealing cover plate on the upper side of the guide vane, and the second sealing sleeve is radially provided with a positioning hole for connecting a positioning pin to achieve the accuracy of the axial distance between the guide vane and the propeller, thereby improving the lift of the pumping device.

[0013] A pressure sensor is provided in the water pump, and the pressure sensor controls the opening and closing of the electromagnetic clutch to avoid technical failures caused by long-term rotation of the drive shaft.

[0014] The water pumping method of the present invention comprises the following steps:

[0015] Step 1: Place the pumping device in water, start the water pump main shaft to drive the drive shaft to rotate. The drive shaft adopts a flexible shaft. One part of the drive shaft is in the water diversion pipe, and the other part is in the branch pipe. The drive shaft drives the propeller to rotate, and the propeller drives the water flow through the pumping device to transport the water to the water pump;

[0016] Step 2: After the water flow is delivered to the water pump, the pressure sensor senses the pressure and closes the electromagnetic clutch, causing the drive shaft to stop rotating and the water pump completes vacuuming;

[0017] Step 3: The water pump starts pumping water.

[0018] This pumping method separates the vacuum water supply from the water pump's delivery power, that is, by outputting power from the water pump's main shaft in conjunction with the drive shaft to output greater power to the propeller, the water pumping device can achieve large flow and high head output, thereby shortening the water pump's vacuum performance. It can also be separated from the water pump's power to reduce failures of the drive shaft and the water pumping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the main structure of a water pump device with vacuum water extraction and water pump delivery power separated according to the present invention;

[0021] Figure 2 This is a schematic diagram of the water diversion pipeline structure in the present invention;

[0022] Figure 3 It is a schematic structural diagram of the pumping device in the present invention;

[0023] Figure 4 This is a schematic diagram of the main structure of the centering component of the present invention;

[0024] Figure 5 This is a schematic diagram of the top view of the centering component of the present invention. Specific implementation plan

[0025] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0026] See also Figure 1-5 A water pump device that separates vacuum water extraction from water pump delivery power includes a water pump 1 connected to a water diversion pipeline 3, a branch pipeline 9 provided on the water diversion pipeline 3, and a common drive shaft 7 provided within the branch pipeline 9 and the water diversion pipeline 3. A connector 8 at one end of the drive shaft 7 is connected to a driven pulley 36, which is connected to an electromagnetic clutch 33 via a belt 35. The electromagnetic clutch 33 is connected to a main shaft 34 on the water pump. The other end of the drive shaft 7 is connected to a pumping device provided within the water diversion pipeline. Part of the main shaft 34 is inside the water pump, and the other part is outside the water pump. The main shaft 34 outside the water pump is connected to the electromagnetic clutch 33. To achieve multiple power transmission of the main shaft 34, a sealing device is provided between the main shaft 34 and the water pump to prevent water leakage.

[0027] As a preferred structure, the water inlet pipe 3 and the branch pipe 9 form a relatively closed space. One end of the water inlet pipe 3 is connected to the water pump 1, and the other end is connected to the pumping device. The pumping device includes at least one propeller 17 and a guide vane 22 cast integrally with the tubular housing. The propeller 17 is connected to the drive shaft 7 through the pump shaft 15. A portion of the drive shaft 7 is inside the water inlet pipe 3, and the other portion is inside the branch pipe 9, so as to achieve the technical performance that the drive shaft 7 can stop rotating when the water pump main shaft rotates. In order to improve the sealing performance, a sealing tube 32 is connected to the outer end of the branch pipe 9, and the end of the sealing tube 32 is sealed and connected to the drive shaft 7 through a seal.

[0028] As a preferred structure, a centering component 10 for clamping the drive shaft 7 is provided in both the water diversion pipe 3 and the branch pipe 9; the centering component 10 includes two semicircular pieces, each of which is provided with a semicircular flange surface 25, and an integral, vertically arranged semicircular sleeve 26 is provided in the middle of the flange surface 25. The semicircular sleeve 26 is provided with a connecting hole 11 in the radial direction, and a water hole 28 is provided in the horizontal surface of the flange surface 25. The semicircular sleeves 26 on the two semicircular pieces clamp the drive shaft 7 and are connected to the water diversion pipe 3 or the branch pipe 9 by the flange surface 25. The water diversion pipe 3 includes a first pipe section 30 connected to the branch pipe 9, and the pipe opening of the first pipe section 30 is connected to the second pipe section 4 while clamping the drive shaft 7 through the centering component 10, and the pipe opening of the second pipe section 4 is connected to the water pumping device through the flange plate 12.

[0029] As an initial high-lift water pump device, a bend pipe 2 is provided between the water pump 1 and the water diversion pipe 3 to facilitate the connection of the water diversion pipe 3. The length of the water diversion pipe 3 is greater than 7 meters, which ensures that the water depth pumped by the pumping device is greater than 7 meters, thereby achieving the adaptability of the water pump to waters with a depth of more than 7 meters.

[0030] In order to increase the lift of the water pumping device, the water pumping device also includes a tubular housing 5. The inner wall of the tubular housing 5 is equipped with a propeller 17 arranged above and below and a guide vane 22 cast integrally with the tubular housing. The propeller 17 is located at the bottom of the tubular housing 5. The middle of the propeller 17 is connected to the pump shaft 15 via a connecting pin 20. The pump shaft 15 is connected to a limit nut 19 on the outside of the bottom of the propeller 17. The top of the pump shaft 15 is connected to the drive shaft 7 via a screw 31. The tubular housing 5 is equipped with the propeller 17 and the guide vane 22 so that the water flow driving force obtained by the propeller 17 is efficiently output through the guide vane 22 to achieve high lift performance of the water pumping device. To prevent clogging by debris, the bottom of the tubular housing 5 is connected to the filter screen 6 via a connecting screw 18.

[0031] In order to further improve the technical performance of the pumping device, the guide vane 22 is connected to the pump shaft 15 through a mechanical sealing device. The mechanical sealing device includes a first sealing sleeve 21, a sealing cover plate 23, and a second sealing sleeve 24. The sealing cover plate 23 is two pieces located on the upper and lower sides of the guide vane 22. A bearing 14 for sleeve-connecting the pump shaft 15 is provided between the sealing cover plate 23 and the impeller 22; the sealing cover plate 23 is connected to the guide vane 22 by a fastening screw 16, so that while the pump shaft 15 rotates, the mechanical sealing device prevents water from entering the connection between the guide vane 22 and the pump shaft 15, thereby improving the service life of the bearing 14 and reducing the resistance of the pump shaft 15 under other factors.

[0032] As a preferred structure, the first sealing sleeve 21 is located between the sealing cover plate 23 on the lower side of the guide vane 22 and the propeller 17, and the second sealing sleeve 24 is located above the sealing cover plate 23 on the upper side of the guide vane 22. The second sealing sleeve 24 is radially provided with a positioning hole for connecting the positioning pin 13. The first sealing sleeve 21 and the second sealing sleeve 24 are used to accurately position the guide vane 22 axially to achieve coordination with the propeller 17 and output a higher lift.

[0033] A water pumping method for separating vacuum water extraction and water pump delivery power includes the following steps:

[0034] Step 1: Place the pumping device in water, start the water pump main shaft to drive the drive shaft to rotate. The drive shaft adopts a flexible shaft. One part of the drive shaft is in the water diversion pipe, and the other part is in the branch pipe. The drive shaft drives the propeller to rotate, and the propeller drives the water flow through the pumping device to transport the water to the water pump;

[0035] Step 2: After the water flow is delivered to the water pump, the pressure sensor senses the pressure and closes the electromagnetic clutch, causing the drive shaft to stop rotating and the water pump completes vacuuming;

[0036] Step 3: The water pump starts pumping water.

[0037] The above-mentioned pumping method separates the vacuum water supply from the water pump delivery power, that is, the main shaft cooperates with the drive shaft to output a larger power to the propeller, generating suction in the water supply pipe and the branch pipe, thereby achieving high-lift output of the pumping device and shortening the water pump vacuuming time. In addition, the drive shaft can be separated from the water pump power to reduce the failure of the drive shaft and the pumping device.

[0038] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A water pump device with vacuum water extraction and water pump delivery power separated, comprising a water pump (1), characterized in that: The water pump (1) is connected to a water diversion pipe (3), a branch pipe (9) is provided on the water diversion pipe (3), and the branch pipe (9) and the water diversion pipe (3) are provided with a same drive shaft (7), one end of the drive shaft (7) is connected to a driven wheel (36) through a connector (8), the driven wheel (36) is connected to an electromagnetic clutch (33) through a belt (35), the electromagnetic clutch (33) is connected to a main shaft (34) on the water pump, and the other end of the drive shaft (7) is connected to a pumping device provided in the water diversion pipe; a part of the main shaft (34) is inside the water pump, and the other part is outside the water pump, and the main shaft (34) outside the water pump is connected to the electromagnetic clutch (33); the water diversion pipe (3) and the branch pipe (9) form a relatively closed space; one end of the water diversion pipe (3) is connected to the water pump (1), and the other end is connected to the pumping device, and the pumping device includes at least one propeller (17) and a guide vane (22), and the propeller (17) is connected to the drive shaft (7) through the pump shaft (15). The pumping device further comprises a tubular housing (5), the inner wall of the tubular housing (5) is provided with a propeller (17) arranged above and below and a guide vane (22) integrally cast with the tubular housing, the propeller (17) is located at the bottom of the tubular housing (5), the middle of the propeller (17) is connected to the pump shaft (15) through a connecting pin (20), the pump shaft (15) is connected to a limiting nut (19) on the outer side of the bottom of the propeller (17), and the top of the pump shaft (15) is connected to the drive shaft (7) through a screw (31); the guide vane (22) is connected to the pump shaft (15) through a mechanical sealing device, the mechanical sealing device comprises a first sealing sleeve (21), a sealing cover plate (23), and a second sealing sleeve (24), the sealing cover plate (23) is two pieces located at the upper and lower sides of the guide vane (22), a bearing (14) sleeved on the pump shaft (15) is provided between the sealing cover plate (23) and the impeller (22); the sealing cover plate (23) is connected to the guide vane (22) through a fastening screw (16).

2. A water pump device with separated vacuum water extraction and water pump delivery power according to claim 1, characterized in that: A portion of the drive shaft (7) is in the water diversion pipe (3), and another portion is in the branch pipe (9); a centering component (10) for clamping the drive shaft (7) is provided in both the water diversion pipe (3) and the branch pipe (9); the centering component (10) comprises two semicircular pieces, each of which is provided with a semicircular flange surface (25); an integral, vertically arranged semicircular sleeve (26) is provided in the middle of the flange surface (25); and a connecting hole (11) is radially provided in the semicircular sleeve (26); a water hole (28) is provided on the horizontal surface of the flange surface (25).

3. The water pump device with separated vacuum water extraction and water pump delivery power according to claim 1, characterized in that: A bend pipe (2) is provided between the water pump (1) and the water diversion pipe (3); the length of the water diversion pipe (3) is greater than 7 meters.

4. A water pump device with separated vacuum water extraction and water pump delivery power according to claim 3, characterized in that: The water diversion pipe (3) includes a first pipe section (30) connected to the branch pipe (9); the pipe opening of the first pipe section (30) is connected to the second pipe section (4) while clamping the drive shaft (7) through a centering component (10); and the pipe opening of the second pipe section (4) is connected to the water pumping device through a flange (12).

5. The water pump device with separated vacuum water extraction and water pump delivery power according to claim 1, characterized in that: The first sealing sleeve (21) is located between the sealing cover plate (23) on the lower side of the guide vane (22) and the propeller (17); the second sealing sleeve (24) is located above the sealing cover plate (23) on the upper side of the guide vane (22), and the second sealing sleeve (24) is radially provided with a positioning hole for connecting the positioning pin (13).

6. The water pump device with separated vacuum water extraction and water pump delivery power according to claim 1, characterized in that: A pressure sensor is provided in the water pump, and the pressure sensor controls the opening and closing of the electromagnetic clutch (33).

7. A water pumping method using the water pump device according to any one of claims 1 to 6, characterized in that: The water pumping method comprises the following steps: Step 1: Place the pumping device into water, start the main shaft (34) of the water pump to drive the drive shaft (7) to rotate, the drive shaft (7) is a flexible shaft, a portion of the drive shaft (7) is in the water diversion pipe (3), and the other portion is in the branch pipe (9), the drive shaft (7) drives the propeller (17) to rotate, and the propeller (17) drives the water flow through the pumping device to deliver the water flow to the water pump; Step 2: After the water flow is delivered to the water pump, the pressure sensor senses the pressure and closes the electromagnetic clutch (33), causing the drive shaft (7) to stop rotating, and the water pump completes vacuuming; Step 3: The water pump starts pumping water.

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