CN202056106U

CN202056106U - Slurry pump

Info

Publication number: CN202056106U
Application number: CN201120135352XU
Authority: CN
Inventors: 范伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-29
Filing date: 2011-04-29
Publication date: 2011-11-30
Anticipated expiration: 2021-04-29

Abstract

The utility model relates to a slurry pump which comprises a front pump shell, a rear pump shell and an impeller. The front pump shell and the rear pump shell are connected by a plurality of bolts; the middle part of the right end surface of the front pump shell is provided with a slurry inlet; the top end of the front pump shell connected with the rear pump shell is provided with a slurry outlet; the impeller is arranged in an empty cavity formed by the front pump shell and the rear pump shell; the front end of the impeller is provided with a front ceramics backplate; the rear end of the impeller is provided with a rear ceramics backplate; the outside circle edges of the front ceramics backplate and the rear ceramics backplate are connected with a volute shell; the middle part of the left end surface of the impeller is connected with an impeller coupler; the left side of the impeller coupler is connected with a transmission shaft; a secondary impeller is arranged on the position of the transmission shaft close to the impeller coupler; and the left side of the secondary impeller is provided with a padding box. The slurry pump has the beneficial effects that: the slurry pump has the characteristics of high wear resistance, high corrosion, light weight, less maintenance, etc. The front pump shell and the rear pump shell are hard to crack and the wall of an impeller shaft is hard to break. Moreover, the slurry pump has long service life, less maintenance times, small start current and low rotating vibration.

Description

A kind of slag stock pump

Technical field

The utility model relates to a kind of slag stock pump.

Background technique

The slag stock pump is a kind of centrifugal pump that is used for carrying and handling two-phase or multiphase material of solid-liquid, is widely used in industries such as electric power, metallurgy, mine, coal, building, chemical industry.Contain more solid particle mostly in the medium of being carried because of the slag stock pump, even be exactly the pulpous state ore pulp sometimes, and the fluid that contains solid particle produces spurt wearing and tearing (abrasion of particles and cavitation wear) to the slag stock pump in course of conveying, becomes to make its flow passage part short main reason in working life.Most of in addition flowing mediums that transport all have pH value in various degree, and are bigger to the corrosive action of slag stock pump, shortened its life cycle widely.Therefore, the centrifugal pump of this type also has higher requirement to wear-resisting, gasproof erosion, decay resistance except that the requirement of common technical parameter such as flow and lift.And for the requirement of the wear-resisting property that reaches this kind equipment, the slag stock pump generally all uses the high-chromium alloy cast-iron Foundry Production with high wear resistance to form at present.

Along with industrial expansion, ferrous materials and colored materials rise in price are rapid in recent years, particularly nonferrous materialss such as the necessary chromium of high-chromium alloy cast-iron, manganese, tungsten especially price be doubled, and these metallic material are base stocks that existing slag stock pump is produced, so the manufacturing cost of production of slag stock pump sharply rises.Stock pump filter member abrasion resistance properties is poor, not corrosion-resistant in addition, and in actual use because its weight is big, and the loss of electric machine is big, and the wear-corrosion resistance difference directly influences the working life of slag stock pump, increasing enterprise's cost of production influences the business economic benefit; And the flow passage part of slag stock pump can't repair with high-chromium alloy cast-iron after concentrated wear, can only be whole discarded, and more caused user's user cost to raise.From long-range eye, along with the lasting exploitation and the utilization of mineral resources, the mineral metal products resource only can be fewer and feweri, and price only can be more and more higher.So how to reduce the cost of production of slag stock pump is present problem demanding prompt solution.

The model utility content

The purpose of this utility model provides a kind of slag stock pump, to overcome the prior art above shortcomings.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of slag stock pump, comprise front pump shell, rear pump shell and impeller, connect by some bolts between described front pump shell and the rear pump shell, the middle part of the right side of front pump shell is provided with stock inlet, the top end of front pump shell and rear pump shell joint is provided with grout outlet, be provided with impeller in the cavity that front pump shell and rear pump shell form, the front end of impeller is provided with ceramic apron plate, the rear end of impeller is provided with pottery back backplate, the pottery apron plate is connected spiral case with the outer circumference edge of pottery back backplate, the middle part of described impeller left side connects the impeller coupling, the left side of impeller coupling connects transmission shaft, be provided with sub-propeller near impeller coupling place on the transmission shaft, the left side of sub-propeller is provided with Stuffing box, and Stuffing box and sub-propeller all are arranged in the cavity in backplate left side, pottery back.

Be provided with the metal apron plate between described ceramic apron plate and the front pump shell, be provided with backplate behind the metal between pottery back backplate and the rear pump shell.

The outer ledge of described impeller coupling is fixed by some screw mandrels and described impeller respectively, and screw mandrel is arranged on the inside of impeller.

The beneficial effects of the utility model are:

1) the overcurrent member of the utility model slag stock pump is compared with traditional High Chrome Steel overcurrent members such as (rich chromium cast irons), have high abrasion, corrosion-resistant, in light weight, safeguard characteristics such as few;

2) the overcurrent member of the utility model slag stock pump is compared with similar ceramic filter spare, and front pump shell and rear pump shell be easy-rupturing not, and the impeller axial wall is difficult for fractureing;

3) long service life, maintenance frequency is few, and starting current is little, and running noise is little, and the running vibrations are little.

Description of drawings

With reference to the accompanying drawings the utility model is described in further detail below.

Fig. 1 is the structural representation of the described a kind of slag stock pump of the utility model embodiment.

Among the figure:

1, front pump shell; 2, rear pump shell; 3, impeller; 4, bolt; 5, stock inlet; 6, grout outlet; 7, ceramic apron plate; 8, pottery back backplate; 9, spiral case; 10, impeller coupling; 11, transmission shaft; 12, sub-propeller; 13, Stuffing box; 14, metal apron plate; 15, backplate behind the metal; 16, screw mandrel.

Embodiment

As shown in Figure 1, the described a kind of slag stock pump of the utility model embodiment, comprise front pump shell 1, rear pump shell 2 and impeller 3, connect by some bolts 4 between described front pump shell 1 and the rear pump shell 2, the middle part of the right side of front pump shell 1 is provided with stock inlet 5, front pump shell 1 is provided with grout outlet 6 with the top end of rear pump shell 2 joints, be provided with impeller 3 in the cavity that front pump shell 1 and rear pump shell 2 form, the front end of impeller 3 is provided with ceramic apron plate 7, the rear end of impeller 3 is provided with pottery back backplate 8, pottery apron plate 7 is connected spiral case 9 with the outer circumference edge of pottery back backplate 8, the middle part of described impeller 3 left sides connects impeller coupling 10, impeller 3 is fixed by can high strength glue with the joint of impeller coupling 10, the left side of impeller coupling 10 connects transmission shaft 11, be provided with sub-propeller 12 near impeller coupling 10 places on the transmission shaft 11, the left side of sub-propeller 12 is provided with Stuffing box 13, and Stuffing box 13 and sub-propeller 12 all are arranged in the cavity in backplate 8 left sides, pottery back.

Be provided with metal apron plate 14 between described ceramic apron plate 7 and the front pump shell 1, be provided with backplate 15 behind the metal between pottery back backplate 8 and the rear pump shell 2.

The outer ledge of described impeller coupling 10 is fixed by some screw mandrels 16 and described impeller 3 respectively, and screw mandrel 16 is arranged on the inside of impeller 3.

The utility model slag stock pump is when concrete work, pottery apron plate 7, pottery back backplate 8, spiral case 9 and impeller 3 all adopt stupalith to make, pottery not and be to be raw material with single pottery but has not incorporated metal components in pottery, have anticorrosive, anti abrasive characteristic; During work, transmission shaft 11 links to each other with motor, thus the rotation of impeller (ceramic impeller) 3, can be in the time of impeller 3 rotations with the air emptying in the pump, promptly by stock inlet 5 inspiration slags slurry, discharge the slag slurry after the air emptying, promptly finish this flow process operation from grout outlet 6.Owing to be to have particle and other corrosive chemicals in the slag slurry, make it before the full-metallic pump pump housing is caused wearing and tearing and corrosion, machine very easily consumes, damages.Through improvement of the present utility model, ceramic apron plate 7 and pottery back backplate 8 are set in pump housing inside, and impeller 3 also is to utilize ceramic structure, wear-resistant, corrosion resistance is strong, weight alleviates greatly, produces user cost and reduces greatly.And pump case adopts the connecting shaft bolt to link to each other, and detachably is convenient for changing the inner ceramic parts, saves steel resources.

The utility model slag stock pump has following advantage: 1, under a certain specific operation state, the rich chromium cast iron filter member is owing to the high mill state of slurry, and be 20-30 days working life.After using the Ceramic metal composite members, can reach 180 days the working life of the utility model slag stock pump; 2, have again under the working condition of cavitation erosion in existing abrasion, surpass rich chromium cast iron working life in Ceramic metal combined filtration spare working life more than 10 times; 3, impeller is being compared the rich chromium cast iron impeller owing in light weight under equal working condition, and it is lower to play electric current, and 25%-30% falls in loss.

The utility model is illustrated by top embodiment, and still, the utility model is not limited to particular example as described herein and embodiment.Any those of skill in the art are easy to be further improved under the situation that does not break away from the utility model spirit and scope and are perfect, therefore the utility model only is subjected to the restriction of the content and the scope of the utility model claim, and its intention contains all and is included in alternative and equivalent in the utility model spirit and scope that limited by appendix claim.

Claims

1. slag stock pump, comprise front pump shell (1), rear pump shell (2) and impeller (3), it is characterized in that: connect by some bolts (4) between front pump shell (1) and the rear pump shell (2), the middle part of the right side of front pump shell (1) is provided with stock inlet (5), front pump shell (1) is provided with grout outlet (6) with the top of rear pump shell (2) joint, be provided with impeller (3) in the cavity that front pump shell (1) and rear pump shell (2) form, the front end of impeller (3) is provided with ceramic apron plate (7), the rear end of impeller (3) is provided with pottery back backplate (8), pottery apron plate (7) is connected spiral case (9) with the outer circumference edge of pottery back backplate (8), the middle part of impeller (3) left side connects impeller coupling (10), the left side of impeller coupling (10) connects transmission shaft (11), transmission shaft (11) is gone up near impeller coupling (10) and is located to be provided with sub-propeller (12), the left side of sub-propeller (12) is provided with Stuffing box (13), and Stuffing box (13) and sub-propeller (12) all are arranged in the cavity in pottery back backplate (8) left side.

2. slag stock pump according to claim 1 is characterized in that: be provided with metal apron plate (14) between ceramic apron plate (7) and the front pump shell (1), be provided with backplate (15) behind the metal between pottery back backplate (8) and the rear pump shell (2).

3. slag stock pump according to claim 1 and 2 is characterized in that: the outer ledge of impeller coupling (10) is fixing by some screw mandrels (16) and impeller (3) respectively, and screw mandrel (16) is arranged on the inside of impeller (3).