CN110500286A - A fast self-priming high-efficiency horizontal self-priming pump with the suction port at the front end - Google Patents

Abstract

The invention discloses a fast self-priming high-efficiency horizontal self-priming pump with a suction port at the front end, which comprises a pump shaft and a pump body. The left end of the pump shaft is provided with an impeller, and the right end of the impeller is provided with a partition. The right end of the above partition is fixed with a sealing box by screws, and an auxiliary impeller is arranged between the sealing box and the partition; the outer ring of the pump shaft is provided with a shaft sleeve, and the outer ring of the shaft sleeve is provided with an organic seal up. The beneficial effect of the present invention is that first pass the machine to seal the cooling water, and then start the pump, which can realize self-priming within 10 seconds, and the pump efficiency is almost the same as that of a horizontal centrifugal pump. The power consumption of this self-priming structure is limited, and for large-scale self-priming pumps The maximum power consumption is less than 3KW, and the power consumption of small self-priming pumps is lower. Compared with the traditional ZB type horizontal self-priming pump or the self-priming tank installed in front of the centrifugal pump, this new structure does not need to prime the pump, the self-priming time is faster, and the pump efficiency is higher.

Description

A fast self-priming high-efficiency horizontal self-priming pump with the suction port at the front end

technical field

The invention relates to the technical field of pump valve equipment, in particular to a fast self-priming high-efficiency horizontal self-priming pump with a suction port at the front end.

Background technique

Horizontal self-priming pump, compared with other types of self-priming centrifugal pumps, because the pump itself has no check valve, the structure is the simplest; the work is the most reliable; the trouble-free working time is long, easy to maintain and use, small in size and heavy in weight Lightweight, high efficiency, special consideration has been made in design Compared with the pump of the same caliber, it has large displacement and high performance.

Horizontal self-priming pumps are more effective as emergency pumps in industrial and agricultural production, emergency rescue, such as drainage and fire fighting. Horizontal self-priming pumps are widely used for urban water supply in petroleum, chemical, metallurgy, machinery, chemical fiber, food, energy, transportation and other industrial sectors, and can also be used for agricultural drainage and irrigation. It is used to transport clear water or other liquids whose physical and chemical properties are similar to clear water with a viscosity less than 5°E and a temperature lower than 80°C.

The existing ZB type horizontal self-priming pump or centrifugal pump is equipped with a self-priming tank in front of it. The operation is complicated, the self-priming time is long, and the service efficiency of the self-priming pump cannot meet the actual demand.

Contents of the invention

In view of the above problems, the present invention aims to provide a fast self-priming and high-efficiency horizontal self-priming pump with the suction port at the front end.

For realizing this technical purpose, scheme of the present invention is:

As a preference, a fast self-priming high-efficiency horizontal self-priming pump with the suction port at the front end, including a pump shaft and a pump body, is characterized in that: the left end of the pump shaft is provided with an impeller, and the right end of the impeller is provided with a partition plate, the right end of the partition is fixed with a sealing box by screws, and an auxiliary impeller is arranged between the sealing box and the partition; the outer ring of the pump shaft is provided with a shaft sleeve, and the outer ring of the shaft sleeve is The circle is set with an organic seal.

Preferably, the front end of the sealed box is provided with an organic seal flushing water outlet, and the rear end of the sealed box is provided with a high-pressure end outlet.

Preferably, the auxiliary impeller rotates to form a water ring to compress the air in the suction chamber.

Preferably, the surface of the impeller is annularly provided with several air suction ports, and the air suction ports and the separator form a negative pressure.

The beneficial effect of the present invention is that first pass the machine to seal the cooling water, and then start the pump, which can realize self-priming within 10 seconds, and the pump efficiency is almost the same as that of a horizontal centrifugal pump. The power consumption of this self-priming structure is limited, and for large-scale self-priming pumps The maximum power consumption is less than 3KW, and the power consumption of small self-priming pumps is lower. Compared with the traditional ZB type horizontal self-priming pump or the self-priming tank installed in front of the centrifugal pump, this new structure does not need to prime the pump, the self-priming time is faster, and the pump efficiency is higher.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the specific embodiment described in the present invention is

A fast self-priming high-efficiency horizontal self-priming pump with a suction port at the front end, including a pump shaft 8 and a pump body 1, characterized in that: the left end of the pump shaft 8 is provided with an impeller 2, and the right end of the impeller 2 is provided There is a partition 5, and the right end of the partition 5 is fixed with a sealing box 7 by screws, and an auxiliary impeller 3 is arranged between the sealing box 7 and the partition 5; the outer ring of the pump shaft 8 is provided with The shaft sleeve 4, the outer ring of the shaft sleeve 4 is provided with an organic seal 9.

The front end of the sealed box 7 is provided with an organic seal flushing water outlet 7.1, and the rear end of the sealed box is provided with a high-pressure end outlet 7.2.

The auxiliary impeller 3 forms a water ring by rotating to compress the air in the suction chamber.

The surface of the impeller 2 is annularly provided with several suction ports 6, and the suction ports 6 and the partition plate 5 form a negative pressure.

When implementing it:

Turn on the machine seal cooling water first, then turn on the pump, the auxiliary impeller 3 rotates, forming a negative pressure on the partition 5 and the suction port 6 (the suction port 6 is at the front end), sucking in the air at the inlet of the pump body 1 from the balance hole of the impeller 2 and The mechanical seal flushing water flows out from the mechanical seal flushing water outlet 7.1 of the sealing box 7, and the mechanical seal flushing water forms a water ring in the cavity of the sealing box 7 due to the rotation of the auxiliary impeller 3 to compress the air in the suction cavity, and the compressed air Exhaust air and water from outlet 7.2 of the high-pressure end at the rear end of the sealed box cavity until the air in the pump inlet pipeline and the pump body is completely filled with liquid, and the self-priming process is completed. After stopping the pump, turn off the cooling water of the machine seal.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any minor modifications, equivalent replacements and improvements made to the above embodiments according to the technical essence of the present invention shall be included in the technical aspects of the present invention. within the scope of protection of the program.

Claims (4)

1. a kind of air entry is in the fast self-priming high efficient horizontal self priming pump of front end, including pump shaft and the pump housing, it is characterised in that: described Pump shaft left end be provided with impeller, the impeller right end is provided with partition, and the partition right end is fixed with close by screw Joint sealing body is provided with accessory impeller between the seal case and partition；The pump shaft outer ring is provided with axle sleeve, the axis It covers outer ring and organic envelope is set.

2. a kind of air entry according to claim 1 is in the fast self-priming high efficient horizontal self priming pump of front end, it is characterised in that: The seal case front end is provided with machine sealing flushing water out, and the seal case rear end is provided with high-voltage end outlet.

3. a kind of air entry according to claim 1 is in the fast self-priming high efficient horizontal self priming pump of front end, it is characterised in that: The accessory impeller forms water ring by rotation and compresses to the air of suction chamber.

4. a kind of air entry according to claim 1 is in the fast self-priming high efficient horizontal self priming pump of front end, it is characterised in that: The impeller surface annular is provided with several air entries, and the air entry and partition form negative pressure.