CN102192184B

CN102192184B - Slurry pump

Info

Publication number: CN102192184B
Application number: CN 201110147655
Authority: CN
Inventors: 李国中
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-02
Filing date: 2011-06-02
Publication date: 2013-03-20
Anticipated expiration: 2031-06-02
Also published as: CN102192184A

Abstract

The invention relates to a slurry pump, in particular to a charging pump used for a press filter in coal washing industry. The slurry pump comprises a bracket for supporting a pump body, wherein the pump body comprises an impeller, a main shaft and a pump shell. The slurry pump is characterized in that: the pump shell comprises a suction chamber, a primary pump shell and a secondary pump shell connected in turn end to end, wherein a primary impeller is arranged in the primary pump shell; a secondary impeller is arranged in the secondary pump shell; the primary impeller and the secondary impeller are arranged relatively; the side wall of the suction chamber is provided with a feed port; the tail end face of the suction chamber is provided with a suction chamber outlet; the suction chamber outlet is communicated with a primary pump shell inlet formed on the front end face of the primary pump shell; the side wall of the primary pump shell is provided with a primary pump shell outlet of which the direction is arranged along the tangential direction of the wall of the primary pump shell; the primary pump shell outlet is communicated with a secondary pump shell inlet formed on the outer end face of the secondary pump shell; the side wall of the secondary pump shell is provided with a discharge port; and the direction of the primary pump shell outlet is arranged along the tangential direction of the wall of the pump shell. Thus, the slurry pump accords with water conservation characteristics of fluid, reduces the resistance of the fluid in a pump body cavity, and is favorable for reducing the shaft power.

Description

A kind of slag stock pump

The present invention relates to a kind of slag stock pump, particularly a kind of charging pump for the coal washing industry pressure filter.

Background technique

At present, the secondary charging pump that the coal washing industry pressure filter is used, the cross over pipe between its one-level impeller and the sencond stage impeller is perpendicular to the axis setting of one-level impeller housing, and the Flow of Goods and Materials resistance is larger, and air horsepower requires high, and energy consumption is large.

Summary of the invention

The technical issues that need to address of the present invention provide a kind of slag stock pump, by the existing pump body structure is improved, reduce the Flow of Goods and Materials resistance, reduce air horsepower, reduce energy consumption.

For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of slag stock pump, carriage, the bracket support pump housing, the pump housing comprises impeller, main shaft and pump case, pump case is fixed on the carriage front end, carriage is by the rotary pair supports main shaft, the front-end of spindle assembling is arranged on the impeller of pump case inner chamber, terminal by coupling connection motor, described pump case comprises suction chamber, one-level pump case and secondary pump case, the three is Cylinder Shell, its end face head and the tail connect successively, the one-level impeller is set in the one-level pump case, in the secondary pump case sencond stage impeller is set, one, sencond stage impeller is installed relatively, the suction chamber sidewall is offered material feeding mouth, the suction chamber terminal surface is axially established the suction chamber outlet, the suction chamber outlet is communicated with the one-level pump case import that is opened in one-level pump case front-end face, the primary pump shell side wall arranges the outlet of one-level pump case, the outlet of one-level pump case is communicated with the secondary pump case import that is arranged on secondary pump case exterior edge face by connecting tube, the sidewall of secondary pump case is offered discharge port, and described one-level pump case Way out arranges along primary pump shell wall tangent direction.

Further improvement of the present invention is: described suction chamber front end arranges shaft sealing, described shaft sealing comprises the axle sleeve that cooperates with main shaft, sleeve outer surface cooperates two outside framework oil seals, space between two outside framework oil seals is seal ring, store lubricating grease, the stuffing box packing of outside framework oil seal arranged outside in the seal ring.

The blade face of described one-level impeller and sencond stage impeller is designed to twisted shape.

Because the technological progress of having adopted technique scheme, the present invention to obtain is:

One-level pump case Way out of the present invention arranges along the pump house wall tangent direction, and the outlet of one-level pump case connects pipe, meets the water conservancy characteristic of fluid, has reduced fluid at the endoceliac resistance of pump, the favourable air horsepower that reduces.

Suction chamber, one-level pump case and secondary pump case are connected successively and are connected, and the I and II impeller is installed relatively, makes suction chamber form relative negative pressure when impeller is worked, and makes the axial seal of water pump easier.

Drip ring and two filled multi-sealed forms of outside framework oil seal are adopted in shaft sealing, make axial sealing effect better.

The blade face of impeller is designed to twist the blade face, and resistance, energy saving in the time of can reducing fluid by impeller are raised the efficiency.

Description of drawings

Fig. 1 is a kind of structural representation plan view of slag stock pump;

Fig. 2 is a kind of structural representation plan view of slag stock pump;

Fig. 3 is a kind of structural representation left view of slag stock pump;

Fig. 4 is the A enlarged view of Fig. 1;

Fig. 5 is the B enlarged view of Fig. 1.

Wherein: 1, secondary pump case, 1-1, discharge port, 2, the one-level pump case, 2-1, the outlet of one-level pump case, 3, sencond stage impeller, 4, the one-level impeller, 5, suction chamber, 5-1, material feeding mouth, 6, backplate, 7, main shaft, 8, sub-propeller, 9, sealing cover, 10, axle sleeve, 11, connecting tube, 12, drip ring, 13, Gland, 14, carriage, 15, outside framework oil seal, 16, stuffing box packing.

Embodiment

Below in conjunction with accompanying drawing the present invention is described in further details:

Fig. 1,2,3, shown in 4 or 5, the present invention includes carriage 14, carriage 14 supports the pump housing, the pump housing comprises impeller, main shaft 7 and pump case, pump case is fixed on carriage 14 front ends, carriage 14 is by rotary pair supports main shaft 7, the assembling of main shaft 7 front ends is arranged on the impeller of pump case inner chamber, terminal by coupling connection motor, described pump case comprises suction chamber 5, one-level pump case 2 and secondary pump case 1, the three is Cylinder Shell, its end face head and the tail connect successively, the one-level pump case 2 interior one-level impellers 4 that arrange, the secondary pump case 1 interior sencond stage impeller 3 that arranges, one, sencond stage impeller 4,3 install relatively, the blade face of impeller is designed to distorted shape, suction chamber 5 sidewalls are offered material feeding mouth 5-1, suction chamber 5 terminal surfaces are axially established the suction chamber outlet, the suction chamber outlet is communicated with the one-level pump case import that is opened in one-level pump case front-end face, the primary pump shell side wall arranges one-level pump case outlet 2-1, one-level pump case outlet 2-1 is communicated with the secondary pump case import that is arranged on secondary pump case exterior edge face by connecting tube 11, the sidewall of secondary pump case is offered discharge port 1-1, suction chamber 5 front ends arrange shaft sealing, described shaft sealing comprises the axle sleeve 10 that cooperates with main shaft 7, axle sleeve 10 outer surfaces cooperate two outside framework oil seals 15, space between two outside framework oil seals 15 is seal ring 12, seal ring 12 interior storage lubricating grease, outside framework oil seal 15 arranged outside stuffing box packing 16.

One-level pump case outlet 2-1 arranges along primary pump shell wall tangent direction, and one-level pump case outlet 2-1 connects pipe 11.

Claims

1. slag stock pump, comprise carriage, the bracket support pump housing, the pump housing comprises impeller, main shaft and pump case, pump case is fixed on the carriage front end, carriage is by the rotary pair supports main shaft, the front-end of spindle assembling is arranged on the impeller of pump case inner chamber, terminal by coupling connection motor, it is characterized in that: described pump case comprises suction chamber, one-level pump case and secondary pump case, the three is Cylinder Shell, its end face head and the tail connect successively, the one-level impeller is set in the one-level pump case, in the secondary pump case sencond stage impeller is set, one, sencond stage impeller is installed relatively, the suction chamber sidewall is offered material feeding mouth, and the suction chamber terminal surface is axially established the suction chamber outlet, and the suction chamber outlet is communicated with the one-level pump case import that is opened in one-level pump case front-end face, the primary pump shell side wall arranges the outlet of one-level pump case, the outlet of one-level pump case is communicated with the secondary pump case import that is arranged on secondary pump case exterior edge face by connecting tube, and the sidewall of secondary pump case is offered discharge port;

Described one-level pump case Way out arranges along primary pump shell wall tangent direction.

2. a kind of slag stock pump according to claim 1, it is characterized in that: described suction chamber front end arranges shaft sealing, described shaft sealing comprises the axle sleeve that cooperates with main shaft, sleeve outer surface cooperates two outside framework oil seals, space between two outside framework oil seals is seal ring, store lubricating grease, the stuffing box packing of outside framework oil seal arranged outside in the seal ring.

3. a kind of slag stock pump according to claim 1, it is characterized in that: the blade face of described one-level impeller and sencond stage impeller is designed to twisted shape.