CN207813953U - A kind of mixed-flow pump exempts to vacuumize automatic starting device - Google Patents

Abstract

A kind of mixed-flow pump exempts to vacuumize automatic starting device, belong to farmland water conservancy works technical field, including rack, mixed-flow pump, motor, water inlet pipe and outlet pipe, filling pipe is equipped between intake pool and outlet pipe, filling pipe is equipped with water injecting pump and check-valves, outlet pipe is equipped with level detection sensor and pressure sensor, the top of outlet pipe is equipped with control cabinet, it is equipped with the control device being connected with each other in control cabinet and switching switchs, level detection sensor, pressure sensor are respectively connected on control device, and switching switch forms break-make with motor and connect.The utility model structure novel, operation principle is clear, mixed-flow pump is controlled using liquid level detecting sensor, reach and simple, automatic start-stop, low-cost purpose are installed, compared with traditional mixed flow pump activation device, the utility model is at low cost, effect is good, can be widely applied on the irrigation pumping station of irrigation and water conservancy mixed-flow pump, centrifugal pump, especially on integral intelligent pumping plant.

Description

A vacuum-free automatic start-up device for a mixed-flow pump

technical field

The utility model belongs to the technical field of farmland water conservancy engineering, and relates to an automatic starting device for a pump, in particular to a vacuum-free automatic starting device for a mixed-flow pump.

Background technique

Since the reform and opening up, China's agricultural development has achieved world-renowned achievements. With less than 10% of the world's arable land, it has basically solved the problem of feeding 22% of the world's population. Among them, farmland water conservancy facilities have played a considerable role. In the next 5 to 10 years, the state will increase public finance investment in water conservancy and promote the construction of farmland water conservancy. In recent years, the investment in farmland water conservancy has been significantly increased in various places. The area of farmland water conservancy projects is extensive and large, and the number of irrigation and drainage pumping stations is large. Among them, small horizontal centrifugal pumps and mixed flow pumps are widely used. It is time-consuming and labor-intensive to start by manual water injection; it is often difficult to realize automatic control by using the method of vacuum pumping. If automatic control is required, two solenoid valves must be added, which increases the cost of the entire pump device.

Utility model content

The utility model aims at the fact that the existing centrifugal pumps and mixed flow pumps need manual water injection before starting, which is time-consuming and labor-intensive; the method of vacuum pumping can only be started manually, and it is difficult to realize automatic control, but to realize automatic starting, it must be done in the vacuum pump. Adding two solenoid valves at the water outlet of mixed-flow pumps and centrifugal pumps will undoubtedly increase the cost of the entire pumping station. A vacuum-free automatic start-up device for mixed-flow pumps is proposed. Pump water injection, when the water injection depth can submerge the impeller of the mixed flow pump and centrifugal pump, use the liquid level detection sensor installed at the corresponding position of the mixed flow pump and centrifugal pump to transmit the detection signal to the automatic switch, thereby stopping the single-phase vortex self-priming pump and starting Mixed flow pump, centrifugal pump main start switch, to achieve the purpose of simple installation, automatic start and stop, and low cost.

The technical scheme of the utility model is: a vacuum-free automatic starting device for a mixed flow pump, including a frame, a mixed flow pump and a motor arranged on the frame, a water inlet pipe arranged in the water inlet pool, and an outlet connected to the mixed flow pump. Water pipe; it is characterized in that: a water injection pipeline is provided between the water inlet pool and the water outlet pipe, a water injection pump and a check valve are provided on the water injection pipe, a water level detection sensor and a pressure sensor are provided on the water outlet pipe, and the A control box is arranged above the water outlet pipe, and a control device and a switching switch connected to each other are arranged in the control box. The water level detection sensor and the pressure sensor are respectively connected to the control device, and the switching switch forms an on-off connection with the motor. .

The water injection pump is a single-phase vortex self-priming pump.

The water level detection sensor is arranged at the original water injection hole or vacuum pumping hole of the mixed flow pump.

The control device is formed by connecting a digital chip and a single-chip microcomputer.

One end of the water injection pipeline extends into the water inlet pool, and the other end is sealed and connected with the water outlet pipe. The check valve is arranged close to the water outlet pipe, and the water injection pump is arranged away from the water outlet pipe.

The beneficial effects of the utility model are: a vacuum-free automatic starting device for a mixed-flow pump proposed by the utility model has a novel structure and a clear working principle. When pumping the impeller, use the detection signal of the liquid level detection sensor installed at the corresponding position of the mixed flow pump to stop the single-phase vortex self-priming pump and the start switch of the mixed flow pump to achieve the purpose of simple installation, automatic start and stop, and low cost. Compared with the mixed-flow pump starting device of the present invention, the invention has low cost and good effect, and can be widely used in irrigation pump stations of farmland water conservancy mixed-flow pumps and centrifugal pumps, especially integrated intelligent pump stations.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

In the figure: mixed flow pump 1, motor 2, water level detection sensor 3, control box 4, water outlet pipe 5, water inlet pipe 6, water injection pump 7, check valve 8, pressure sensor 9, switch 10, water injection pipe 11, water inlet pool 12. Control device 13, frame 14.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, a vacuum-free automatic starting device for a mixed flow pump includes a frame 14, a mixed flow pump 1 and a motor 2 arranged on the frame 14, an inlet pipe 6 arranged in the water inlet pool 12, and a mixed flow The water outlet pipe 5 connected to the pump 1; the water injection pipe 11 is provided between the water inlet pool 12 and the water outlet pipe 6, the water injection pipe 11 is provided with a water injection pump 7 and a check valve 8, and the water outlet pipe 5 is provided with a water level detection sensor 3 and pressure Sensor 9, the top of outlet pipe 6 is provided with control box 4, is provided with interconnected control device 13 and switch 10 in control box 4, water level detection sensor 3, pressure sensor 9 are connected on the control device 13 respectively, switch 10 Make an on-off connection with the motor 2.

As shown in Figure 1, a vacuum-free automatic starting device for a mixed-flow pump, the water injection pump 7 is a single-phase vortex self-priming pump; the water level detection sensor 3 is set at the original water injection hole or vacuum hole of the mixed-flow pump 1; the control device 13 is composed of a digital chip and a single-chip microcomputer connection; one end of the water injection pipe 11 extends into the water inlet pool 12, and the other end is sealed and connected with the water outlet pipe 5, the check valve 8 is set close to the water outlet pipe 5, and the water injection pump 7 is set away from the water outlet pipe 5.

The utility model has a novel structure and a clear working principle. Compared with the traditional mixed-flow pump starting device, the present invention has low cost and good effect, and can be widely used in irrigation pump stations of farmland water conservancy mixed-flow pumps and centrifugal pumps, especially integrated intelligent on the pump station.

Claims (5)

1. a kind of mixed-flow pump exempts to vacuumize automatic starting device, including rack (14), the mixed-flow pump (1) being arranged in rack (14) With motor (2), water inlet pipe (6) in intake pool (12) is set, and the outlet pipe (5) being connected with mixed-flow pump (1)；Its feature It is：Filling pipe (11) is equipped between the intake pool (12) and outlet pipe (6), the filling pipe (11) is equipped with water filling (7) and check-valves (8) are pumped, the outlet pipe (5) is equipped with level detection sensor (3) and pressure sensor (9), the water outlet The top for managing (6) is equipped with control cabinet (4), and the control device (13) being connected with each other and switching switch are equipped in the control cabinet (4) (10), the level detection sensor (3), pressure sensor (9) are respectively connected on control device (13), the switching switch (10) break-make is formed with motor (2) to connect.

2. a kind of mixed-flow pump according to claim 1 exempts to vacuumize automatic starting device, it is characterised in that：The water injecting pump (7) it is single-phase spiral vortex self-suction pump.

3. a kind of mixed-flow pump according to claim 1 exempts to vacuumize automatic starting device, it is characterised in that：The water level inspection Sensor (3) is surveyed to be arranged at the original annotation water hole of mixed-flow pump (1) or vacuumize at hole.

4. a kind of mixed-flow pump according to claim 1 exempts to vacuumize automatic starting device, it is characterised in that：The control dress Setting (13) is connected and composed by digit chip and microcontroller.

5. a kind of mixed-flow pump according to claim 1 exempts to vacuumize automatic starting device, it is characterised in that：The water injection pipe Road (11) one end stretches in intake pool (12), and the other end is tightly connected with outlet pipe (5), and check-valves (8) is close to outlet pipe (5) Setting, water injecting pump (7) are arranged far from outlet pipe (5).