CN201554660U

CN201554660U - Diving slurry pump

Info

Publication number: CN201554660U
Application number: CN2009202804473U
Authority: CN
Inventors: 韩锋杰; 夏忠捷; 邱仁江; 朱广智; 孙建业
Original assignee: SHANDONG YANSHAN PUMPS CO Ltd
Current assignee: SHANDONG YANSHAN PUMPS CO Ltd
Priority date: 2009-12-04
Filing date: 2009-12-04
Publication date: 2010-08-18
Anticipated expiration: 2019-12-04

Abstract

The utility model provides a diving slurry pump, which comprises a coaxial motor, a water pump and a sealing device positioned between the motor and the water pump. The sealing device comprises an oil chamber, a rear pump cover, a mechanical seal and a mechanical seal base, wherein the rear pump cover is fixed at the bottom portion of the oil chamber; the lower end surface of the rear pump cover is fixedly connected with the mechanical sealing base sleeved on a shaft; and the mechanical seal installed on the upper end surface of the mechanical seal base is positioned inside the oil chamber. The diving slurry pump is characterized in that the mechanical seal positioned inside the oil chamber adopts two single end surface mechanical seals pressed between the oil chamber and the mechanical seal base; an oil chamber outer mechanical seal additionally arranged is pressed between the lower end surface of the mechanical seal base and an impeller of the water pump; and auxiliary impellers are omitted, thereby resolving the problem of overlarge power consumption of the auxiliary impellers. The whole machine has high efficiency, and the mechanical seal outside the oil chamber still has the function of reducing the pressure of a sealing cavity under the condition of damage, thereby prolonging the service life of the mechanical seal inside the oil chamber, and having fine working performance.

Description

Diving slag stock pump

Technical field

The utility model relates to diving slag stock pump, particularly a kind of mechanical seal structure of the slag stock pump of diving under water.

Background technique

The structure and the proof submersible sand discharging pump of diving slag stock pump in the market are similar, sealing configuration all adopts a cover Double End machine envelope in the grease chamber, the upper-end surface is as the sealing of motor and grease chamber, and the lower end surface is the sealing in grease chamber and the pump chamber, and the inside of grease chamber is as a Seal cage.Pump side is installed one group of outside framework oil seal outside the grease chamber, and the sub-propeller sealing configuration is installed below the outside framework oil seal.During the pump running, sub-propeller plays the effect that reduces Seal cage pressure.But there is following shortcoming in this structure: 1, the sub-propeller consumed power is excessive, influences overall efficiency.2, diving slag stock pump generally is used in to extract and contains in the sewage of solid particle, so the easier wearing and tearing of sub-propeller, when sub-propeller damages, can not play decompression, and the mechanical seal in the grease chamber is along with the very fast damage of the rising of bearing pressure.When 3, the double mechanical seal lower end surface in the grease chamber is damaged, the also very fast inefficacy in upper-end surface.

The model utility content

The utility model provides a kind of can overcome above-mentioned defective, diving slag stock pump that overall efficiency is high.Its technological scheme is:

Comprise coaxial motor, water pump and the seal arrangement between motor and water pump, seal arrangement comprises the grease chamber, rear pump cover, mechanical seal and mechanical sealing base, wherein rear pump cover is fixed on the bottom of grease chamber, fixedly connected with the mechanical sealing base on being sleeved on axle in the lower end surface, the mechanical seal that is installed on the mechanical sealing base upper-end surface is positioned at inside, grease chamber, it is characterized in that: two cover single mechanical end face seals are adopted in the mechanical seal that is positioned at the grease chamber, two cover mechanical seals are fitted between grease chamber and the mechanical sealing base, set up mechanical seal outside the grease chamber, mechanical seal is fitted between the impeller of mechanical sealing base lower end surface and water pump outside the grease chamber.

Described diving slag stock pump is provided with axle-steel silk back-up ring between the two cover mechanical seals in the grease chamber.

The utility model compared with prior art, its advantage is:

1, two cover single mechanical end face seals are installed in the grease chamber, pump side is installed a cover single mechanical end face seal outside the grease chamber, has save sub-propeller, has solved the excessive problem of sub-propeller consumed power, has improved overall efficiency;

Even 2, the mechanical seal outside the grease chamber still can be played the effect that reduces Seal cage pressure having under the situation of wearing and tearing, effectively prolonged the working life of mechanical seal in the grease chamber.

3, two cover single end face machine envelope mutual noninterferences in the grease chamber, when wherein a cover damaged, an other cover was unaffected, excellent working performance.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation

Among the figure: 1, mechanical seal 9 outside motor 2, water pump 3, grease chamber 4, rear pump cover 5, mechanical seal 6, mechanical sealing base 7, axle-steel silk back-up ring 8, the grease chamber, impeller

Embodiment

In the embodiment shown in fig. 1: comprise coaxial motor 1, water pump 2 and the seal arrangement between motor 1 and water pump 2, seal arrangement comprises grease chamber 3, rear pump cover 4, mechanical seal 5, axle-steel silk back-up ring 7 and mechanical sealing base 6, wherein rear pump cover 4 is fixed on the bottom of grease chamber 3, fixedly connected with the mechanical sealing base 6 on being sleeved on axle in the lower end surface, being installed in the cover mechanical seal 5 of two on mechanical sealing base 6 upper-end surfaces is fitted between grease chamber 3 and the mechanical sealing base 6, axle-steel silk back-up ring 7 is installed between the two cover mechanical seals 5, be used for compressing the mechanical seal 5 in the grease chamber 3, set up mechanical seal 8 outside the grease chamber, mechanical seal 8 is fitted between the impeller 9 of mechanical sealing base 6 lower end surfaces and water pump 2 outside the grease chamber.When water pump 2 running, the waterpower axial force that impeller 9 produces compresses mechanical seal outside the grease chamber 8, makes that mechanical seal 8 gets into smooth more reliable outside the grease chamber.

Claims

1. diving slag stock pump, comprise coaxial motor (1), water pump and be positioned at motor (1) and water pump (2) between seal arrangement, seal arrangement comprises grease chamber (3), rear pump cover (4), mechanical seal (5) and mechanical sealing base (6), wherein rear pump cover (4) is fixed on the bottom of grease chamber (3), fixedly connected with the mechanical sealing base (6) on being sleeved on axle in the lower end surface, the mechanical seal (5) that is installed on mechanical sealing base (6) upper-end surface is positioned at inside, grease chamber (3), it is characterized in that: two cover single mechanical end face seals are adopted in the mechanical seal (5) that is positioned at grease chamber (3), two cover mechanical seals (5) are fitted between grease chamber (3) and the mechanical sealing base (6), set up mechanical seal outside the grease chamber (8), mechanical seal outside the grease chamber (8) is fitted between the impeller (9) of mechanical sealing base (6) lower end surface and water pump (2).

2. diving slag stock pump as claimed in claim 1 is characterized in that: be positioned between two covers mechanical seals (5) of grease chamber (3) and be provided with axle-steel silk back-up ring (7).