Automatic water suction device of vertical sewage pump

Abstract

The utility model discloses an automatic water suction device of a vertical sewage pump, and belongs to the field of sewage pumps. Compared with an original pump station starting method, the water pump self-absorption device can guarantee that the vertical sewage pump achieves the automatic starting and stopping functions. Before an original pump station vertical sewage pump is started, a water inlet pipeline must be filled with water, water filling of the water inlet pipeline is labor-consuming, time-consuming and very inconvenient, the self-suction device in the scheme is simple and rapid to operate, manual operation is not needed after the self-suction device is connected into a circuit for control, and automatic control is achieved. The operation efficiency of the pump station is improved, the manual on-duty cost and the maintenance cost of the pump station are saved, and the pump station can be intelligently controlled in all directions.

Description

Technical Field

[0001] The utility model belongs to the field of sewage pumps, and in particular relates to an automatic water absorbing device for a vertical sewage pump. Background Art

[0002] The vertical sewage pump is a single-stage single-suction volute centrifugal pump. The motor is directly connected to the pump. Water is sucked vertically from the bottom and lifted to a certain height to flow out horizontally. Due to the working principle of the single-stage single-suction volute centrifugal pump, water needs to be poured into the water inlet of the pump when starting. The pump can only start to discharge water after the water level reaches above the center line of the impeller.

[0003] A more common structure in the prior art is to install a bottom valve at the bottom of the suction pipe, and then fill the suction pipe with water until the water level reaches above the center line of the impeller. However, due to the limited sealing performance of the bottom valve of the suction pipe, it is impossible to store water in the suction pipe for a long time after the water pump stops pumping water. This also results in the need to repeatedly fill the water once the water pump stops and needs to be restarted, and automatic control of the vertical sewage pump cannot be achieved. The pump station must arrange staff to be on duty and fill the water into the water pump when the water pump needs to be restarted.

[0004] If automatic control of the pump station is required, it is necessary to ensure that the vertical sewage pump has the function of automatically absorbing water to reach the water level before starting, but the design in the existing technology cannot meet the needs of automatic control.

[0005] Therefore, a new design is needed that can be started directly even without human supervision. Utility Model Content

[0006] In view of the above problems existing in the prior art, the purpose of the utility model is to provide an automatic water absorbing device for a vertical sewage pump.

[0007] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0008] A vertical sewage pump automatic water absorbing device comprises a vertical volute type centrifugal pump, a self-priming pump and a self-priming valve. The self-priming pump is connected to the outlet pipe of the centrifugal pump, and the self-priming valve is arranged on one side of the connection between the self-priming pump and the outlet pipe close to the water outlet direction.

[0009] The self-priming valve is a butterfly valve.

[0010] A water level sensor is provided at the connection between the self-priming pump and the water outlet pipe.

[0011] The water level sensor is arranged at a height higher than the center line of the impeller of the volute type centrifugal pump.

[0012] The water level sensor is electrically connected to the self-priming pump, the self-priming water valve and the vertical volute type centrifugal pump respectively.

[0013] A section of flexible pipe is arranged on one side of the self-priming valve facing the water outlet direction, and the other side of the flexible pipe is connected to a common water pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Compared with the original pump station startup method, the water pump self-priming device of this scheme can ensure that the vertical sewage pump can realize the automatic start and stop function. Before the original pump station sewage pump is started, the water inlet pipe must be filled with water. Filling the water inlet pipe with water is labor-intensive and time-consuming, which is very inconvenient. The self-priming device of this scheme is simple and quick to operate. After connecting to the circuit control, no manual operation is required to realize automatic control. The operation efficiency of the pump station is improved, the cost of manual duty and the maintenance cost of the pump station are saved, and the pump station can also be fully intelligently controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic elevation diagram of the utility model;

[0017] Figure 2 It is a plan view of the utility model;

[0018] In the figure: 1. Pump body; 2. Centrifugal pump motor; 3. Self-priming pump; 4. Self-priming valve; 5. Water outlet pipe; 6. Water inlet pipe; 7. Water tank. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with specific embodiments.

[0020] like Figure 1 and Figure 2 As shown, the utility model is mainly improved based on the single-stage single-suction volute centrifugal pump in the prior art, so as to realize the start and stop of the centrifugal pump without manual repeated filling of water.

[0021] like Figure 1 As shown, the vertical centrifugal pump is arranged above the water pool 7 , the centrifugal pump motor 2 is located above the pump body 1 , and the water inlet pipe 6 is connected to the bottom of the pump body 1 and extends into the water pool 7 .

[0022] The other side of the pump body 1 is a water outlet pipe 5, and the water pumped out from the pool 7 by the centrifugal pump is sent out from the water outlet pipe 5. Figure 1 Based on the above, the left side of the pump body 1 is the direction of water discharge.

[0023] A section of hard pipe is connected to the water outlet of the pump body 1, and the self-priming pump 3 is connected to the section of pipe, which is a self-priming pipe. A self-priming valve 4 is arranged on the left side of the self-priming pipe. A section of flexible pipe is connected to the left side of the self-priming valve 4, and the other end of the flexible pipe is connected to an ordinary water pipe.

[0024] There is no limitation on the types of the self-priming pump 3 and the self-priming valve 4. As long as they can realize the functions of water pumping and valve sealing, they can be used in the scheme of the present utility model. For a better understanding of the scheme, in the present embodiment, the self-priming pump 3 is an ordinary self-priming water pump, and the self-priming valve 4 is a butterfly valve.

[0025] A water level sensor is provided inside the self-priming pipe, and the height of the water level sensor is higher than the impeller center line of the volute centrifugal pump body 1. The water level sensor is connected to the self-priming pump 3, the self-priming valve 4, and the centrifugal pump motor 2, and can transmit signals to these devices in real time.

[0026] When starting the centrifugal pump to pump water, first start the self-priming pump 3. At this time, the self-priming valve 4 is in a closed state. The liquid in the pool 7 is pumped into the pump body 1 from the water inlet pipe 6 through the self-priming pump 3. The liquid level of the self-priming pipe connected to the self-priming pump 3 will rise synchronously with the liquid level inside the pump body 1. When the liquid level contacts the water level sensor, the water level sensor sends a signal to start the centrifugal pump motor 2, turn off the self-priming pump 3 and open the self-priming valve 4. Since the height of the water level sensor is higher than the center line of the impeller in the pump body 1, the centrifugal pump has met the normal working requirements when the liquid level reaches the height of the water level sensor. At this time, it can be started to pump water normally.

[0027] The function of the flexible pipe arranged on the left side of the self-priming valve 4 is to reduce the vibration between the self-priming pipe and the ordinary water pipe when the self-priming pump 3 is working. At the same time, it can also reduce the vibration caused by the start-up of the centrifugal pump to a certain extent, thereby extending the service life of the pipe.

[0028] Compared with the solutions in the prior art, the present solution mainly adds a self-priming pump 3 in the pipeline of the pump station and removes the bottom valve at the bottom of the centrifugal pump. The self-priming water suction of the self-priming pump 3 replaces the operation of filling the water inlet pipeline before starting the centrifugal pump. After the self-priming device is installed, the startup of the pump station is more convenient and quick.

[0029] At the same time, a water level sensor is installed in the self-priming pipeline, which can realize full automatic control by automatically detecting the height of the liquid level. The pump station can be changed from manual operation to automatic control, which saves the operation cost of the pump station and makes the management of the pump station more scientific and intelligent.

Claims

1. A vertical sewage pump automatic water suction device, comprising a vertical volute centrifugal pump, characterized in that: It also includes a self-priming pump and a self-priming water valve. The self-priming pump is connected to the water outlet pipe of the centrifugal pump, and the self-priming water valve is arranged on one side of the connection between the self-priming pump and the water outlet pipe close to the water outlet direction.

2. The automatic water absorbing device for a vertical sewage pump according to claim 1 is characterized in that: The self-priming valve is a butterfly valve.

3. The automatic water absorbing device for a vertical sewage pump according to claim 1 is characterized in that: A water level sensor is provided at the connection between the self-priming pump and the water outlet pipe.

4. The automatic water absorbing device for a vertical sewage pump according to claim 3 is characterized in that: The water level sensor is arranged at a height higher than the center line of the impeller of the volute type centrifugal pump.

5. The automatic water absorbing device for a vertical sewage pump according to claim 3 is characterized in that: The water level sensor is electrically connected to the self-priming pump, the self-priming water valve and the vertical volute type centrifugal pump respectively.

6. The automatic water absorbing device for a vertical sewage pump according to claim 1 is characterized in that: A section of flexible pipe is arranged on one side of the self-priming valve facing the water outlet direction, and the other side of the flexible pipe is connected to a common water pipe.

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