Large-scale submersible sewage pump new technology was born

A technical problem to be solved by the present invention is to provide a submersible sewage pump having a mounting structure capable of firmly mounting and supporting a large submersible sewage pump and preventing occurrence of a hidden safety hazard during operation of the pump.

The new technical technical solution is to provide a large submersible sewage pump including a water pump installation layer of a concrete foundation and a pump seat of a water pump, wherein the pump base and the pump base are provided with a water pump and a mounting structure with the following structure: The pump installation layer is fixedly connected, and the bottom of the water pump is directly connected with the pump base.

The figure shows: 1, water pump, 1.1, water inlet, 1.2, motor, 1.2.1, stator, 1.2.2, rotor,

1.2.3, the shaft, 1.2.4, the motor chamber, 1.2.5, impeller, 1.2.6, spacer, 1.2.7, cooling chamber,

1.2.8, cooling water jacket, 1.2.9, the inlet pipe, 1.2.10, the water pipe, 1.2.11, cooling chamber, 1.2.12, chassis,

2, the pump seat, 2.1, floor, 2.2, ring wall,

3, the pump installation layer, 3.1, steel plate I, 3.2, concrete wrap, 3.3, pin, 3.4, briquetting, 3.5,

4, the pump bottom,

5, the pier son,

6, guide rod.

With the above structure, the large submersible sewage pump of the invention has the following advantages compared with the prior art:

      1) Since the bottom of the water pump is directly connected with the pump base and the pump base is fixedly connected with the water pump installation layer, the water pump and the water pump installation layer are fixedly connected to avoid hanging the hanging structure, Phenomenon, so as to avoid the pump hidden at the time of the operation of the security risks occur;

      2) Since the pump seat and the pump installation layer fixed connection, there is no space between the two, so that the pump running vibration generated by the pump installation layer will be absorbed, thus ensuring the normal operation of the pump.

The pump seat is fixedly connected with the water pump installation layer, and the installation structure further comprises a steel plate I embedded in the water pump installation layer and a concrete covering layer; the pump base is connected with the steel plate I, The connection and pump base are covered with a concrete covering. The structure of the concrete wrapped layer, that is, concrete pump seat, the pump and pump installation layer connection is very strong, and its manufacturing difficulty is low, the cost is correspondingly reduced.

Another improvement of the new technology, said pump seat connected with the steel plate I means that the connection includes the positioning pin and the compact; the pump base is composed of the bottom plate and the ring wall; the positioning pin is inserted in the pump And the pressed block has an inverted L shape, one end of the compact is welded to the steel plate I and the other end is welded to the positioning pin. With this arrangement, since the pump base is usually bulky, it is generally casted from cast iron, the steel plate is an iron piece, and the cast can not be welded together with the iron piece. Page 5 To insert a plurality of locating pins on the pump base, the pins are welded to the steel plate, and the steel plate and the dowel are welded together by means of a presser, so that the pump base is fixed to the steel plate. The structure is very simple and the operation is very convenient .

There is also an improvement in the new technology in which the water inlet end of the water pump is located in the ring wall and the end of the water inlet end is fitted to the upper surface of the bottom plate. With this structure, since the pump and the outlet pipe coaxial line, that is, the pump does not produce any torque on the outlet pipe, so that the weight of the pump itself, the pump end of the water pressure on the pump base plate on the surface , The structure is very simple, but also more to ensure the pump's operating performance.

The motor, the stator, the rotor and the rotating shaft; the stator, the rotor and the rotating shaft are installed in the casing of the motor; the motor casing is provided with a motor, An internal cooling device which is circulated and cooled by the first coolant, said electric machine being provided with an external cooling device circulated and cooled by the second coolant, said internal cooling device comprising a motor chamber serving also as a cooling chamber and a plurality of A cooling pipe through which the cooling liquid is circulated, the pipe of the cooling pipe being communicated with the motor chamber and the pipe body of the cooling pipe being disposed in the cooling chamber of the external cooling device. Due to the internal cooling device provided in the motor casing of the new-type submersible sewage pump, the external cooling device is provided outside the motor, the pipe of the cooling pipe is communicated with the motor chamber and the pipe body of the cooling pipe is placed in the external cooling device So that the first coolant takes out the heat generated by the stator and rotor of the motor when the first coolant circulates in the external cooler and the second coolant circulates in the external cooler, and when the first coolant The second cooling fluid of the external cooling device takes away the heat of the first cooling liquid in the cooling pipe, and the second cooling liquid also takes away the heat of the outer wall of the motor, so that the motor The heat generated out to eliminate the motor burn chamber and other security risks.

The impeller is installed on the motor shaft and is located under the motor rotor and the stator; the periphery of the impeller is provided with a spacer, and the gap The upper end of the cooling pipe is communicated with the motor cavity of the upper end of the stator and the rotor, the lower end of the cooling pipe is connected with the motor of the lower end of the stator and the rotor And the lower end of the cooling tube is located outside the spacer. The inner cooling device has the advantages of simple structure, the impeller is installed on the motor shaft and synchronously rotates with the motor shaft, and the energy is used rationally. The periphery of the impeller is provided with a spacer, which forms a pressure difference between inside and outside of the cage To circulate the first coolant in the motor chamber so that the first coolant passes through the cooling tube.

The cooling water jacket is provided outside the cabinet; the water inlet pipe is communicated with the cooling water jacket in the cooling water jacket, the cooling water jacket and the cooling water jacket are arranged in the cooling water jacket; And the highest end of the water inlet pipe is lower than the lowermost end of the stator and the rotor; the outlet pipe is led into the cooling chamber of the cooling water jacket and the water inlet pipe The highest end being above the highest end of the stator and rotor. The structure of the external cooling device of this structure is simple. When cooling, the second cooling liquid enters the cooling chamber of the external cooling device from the water inlet pipe, and flows out of the cooling chamber from the water outlet pipe, while taking away the heat generated by the motor.

There is also an improvement in the new technology, and a mounting guide device comprising two guide levers for slidingly fitting and guiding the water pump when the water pump is installed, the two guide rods being respectively located in the Shell symmetrical on both sides. Because the two guide rods are located on the symmetrical sides of the volute of the pump, the torque generated by the self-weight of the two pumps is balanced and symmetrical so that the guide rod can be deformed and the pump can be smooth and stable. To put and remove.

There is also an improvement in the new technology, said volute is symmetrical on both sides are equipped with a slider, the slider has a groove, the two guide bar with the volute on both sides of the slider Groove sliding fit. With this structure, the pump and guide bar with the structure is more simple, so that the slider force balance, to avoid breaking phenomenon, thus ensuring the normal operation of the pump.

There is also an improvement in the new technology. Said mounting guide further comprises a steel plate II embedded in a water pump mounting layer, each of said guide rods being connected at its bottom to a steel plate II. With this structure, the connection between the guide rod and the water pump mounting layer is more stable, and the connection is also more convenient and simple.

   This new technology is applied to a large submersible sewage pump, can greatly improve the efficiency of the pump, and the stable operation of the sewage pump also has a heavy role.

Manufacturers recommend: Shenlong stainless steel sewage pump

Keywords:Large submersible sewage pumps, new technology programs, installation methods