CN216842248U - Light single-pump-shell slag slurry pump for light abrasion working condition - Google Patents

Abstract

The utility model provides a light-duty single pump shell sediment stuff pump for light abrasion operating mode, which comprises a pump body, bracket and main shaft, the pump body includes preceding pump case, impeller and back pump cover, the outside of back pump cover is equipped with the joint plate, the joint plate passes through bolted connection with the back pump cover, back pump cover passes through joint plate and preceding pump case sealing connection, preceding pump case forms inclosed work cavity with back pump cover, the impeller is located the inside of work cavity, be equipped with sealed axle sleeve and seal part between back pump cover and the main shaft, sealed axle sleeve sets up the inside at seal part, the upper end of bracket is equipped with the bearing body. The slurry pump has the characteristics of simple structure, convenience in disassembly and assembly, high rotating speed, small volume, high efficiency and low cost, and is suitable for light abrasion working condition industries such as coal chemical industry, nonferrous metallurgy, chlor-alkali, alumina and the like.

Description

Light single-pump-shell slag slurry pump for light abrasion working condition

Technical Field

The utility model relates to a sediment stuff pump technical field especially relates to a light-duty single pump shell sediment stuff pump for light abrasion operating mode.

Background

The centrifugal slurry pump is suitable for conveying abrasive or corrosive slurry and is widely applied to the departments of metallurgy, mines, petroleum, chemical industry, coal, electric power, traffic, river dredging, building materials, municipal engineering and the like.

In the industries of coal chemical industry, nonferrous metallurgy, chlor-alkali, alumina and the like, the solution conveyed by a slurry pump contains solid particles, is easy to crystallize, has the volume concentration of below 30 percent, and belongs to the light abrasion working condition. The existing slurry pump used under the working condition is designed for the working condition with serious abrasion at present, has a complex structure, and the overflowing part comprises an impeller, a sheath, a front guard plate, a rear guard plate, a pressure reducing cover, an auxiliary impeller, a sealing shaft sleeve and the like, so that the installation and the disassembly are complicated; meanwhile, the existing slurry pump adopts a closed impeller, the runner crystallization is not easy to clean, the size is large, the rotating speed is low, the manufacturing cost is higher, the hydraulic efficiency is low, the shaft seal is generally sealed by double end faces, and once the seal is short of water, the mechanical seal is easy to burn out, and the maintenance is difficult. Therefore, a slurry pump product with low cost, simple structure and easy maintenance is urgently needed to solve the difficult problems encountered by users.

SUMMERY OF THE UTILITY MODEL

The utility model discloses when using under the light wearing and tearing operating mode to current sediment stuff pump, there is the structure complicacy, loaded down with trivial details technical problem is dismantled in the installation, adopt closed impeller design, there is the difficult clearance of runner crystallization, and is bulky, the higher technical problem of manufacturing cost, and adopt bi-polar face to seal, there is sealed in case the machine seal burns out easily in the lack of water, maintain the difficult technical problem, a light-duty single pump shell sediment stuff pump for light wearing and tearing operating mode is provided, this stuff pump has simple structure, easy dismounting, the rotational speed is high, small, high efficiency, characteristics with low costs, be applicable to the coal industry, nonferrous metallurgy, chlor-alkali, in the light operating mode abrasive industry such as aluminium oxide.

Therefore, the technical scheme of the utility model is, a light-duty single pump shell sediment stuff pump for light abrasion operating mode, which comprises a pump body, bracket and main shaft, the pump body includes preceding pump case, impeller and back pump cover, the outside of back pump cover is equipped with the joint plate, the joint plate passes through bolted connection with the back pump cover, back pump cover passes through joint plate and preceding pump case sealing connection, preceding pump case forms inclosed work cavity with back pump cover, the impeller is located work cavity's inside, be equipped with sealed axle sleeve and seal part between back pump cover and the main shaft, sealed axle sleeve sets up the inside at seal part, the upper end of bracket is equipped with the bearing body.

Preferably, the inside of the bearing body near the one end of the pump body is provided with a front bearing, the outside of the front bearing is provided with a front bearing gland, and the front bearing gland is connected with the bearing body through a bolt in a sealing manner.

Preferably, a dismounting ring is arranged between the front bearing gland and the sealing shaft sleeve.

Preferably, the inside of the one end of the bearing body far away from the pump body is provided with a rear bearing, the outside of the rear bearing is provided with a rear bearing gland, and the rear bearing gland is in sealing connection with the bearing body through a bolt.

Preferably, the sealing member is a mechanical seal.

The beneficial effects of the utility model are that, the utility model discloses at the easy crystallization operating mode of light abrasion, with the impeller design for full open impeller, apron and auxiliary vane around having removed, form the work cavity of inclosed impeller by preceding pump case and back pump cover, can carry out after the blade crystallization and continue to use after comprehensive clearance, do not influence the performance of sediment thick liquid pump, improved life to because of having removed preceding back apron and auxiliary vane, weight alleviates greatly, has improved efficiency, has practiced thrift the cost.

The rear guard plate and the pressure reducing cover are designed into a whole to form the rear pump cover, the structure is simple, the requirement of light abrasion working conditions is met, the manufacturing cost is saved, the processing efficiency is improved, and the production period is shortened.

The utility model discloses carried out the innovative design to the bearing seal system, adopted single terminal surface not to have water injection mechanical seal, need not logical machine and seal cooling water, rely on the local circulation of medium to wash the cooling completely, with the help of the operation of impeller, make sealed intracavity medium circulate, take away terminal surface friction heat, the water economy resource. Because no cooling water is needed to be introduced, the maintenance-free effect of the slurry pump is achieved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

The symbols in the drawings illustrate that:

1. a front pump housing; 2. an impeller; 3. a rear pump cover; 4. a bonding plate; 5. sealing the shaft sleeve; 6. a sealing member; 7. disassembling the ring; 8. a front bearing gland; 9. a front bearing; 10. a bearing body; 101. a grease chamber; 11. a bracket; 12. a rear bearing; 13. a rear bearing gland; 14. a main shaft.

Detailed Description

The present invention will be further described with reference to the following examples.

Fig. 1 is the utility model relates to an embodiment of a light-duty single pump shell sediment stuff pump for light abrasion operating mode, including the pump body, bracket 11 and main shaft 14, the pump body includes preceding pump case 1, impeller 2 and back pump cover 3, and the outside of back pump cover 3 is equipped with joint plate 4, and joint plate 4 passes through bolted connection with back pump cover 3, and back pump cover 3 passes through joint plate 4 and 1 sealing connection of preceding pump case, and preceding pump case 1 forms inclosed working chamber with back pump cover 3, and impeller 2 is located working chamber's inside. Because of ordinary sediment stuff pump most all is closed impeller, and main blade both ends all have apron and auxiliary vane, and the effect of apron is mainly to wear resistant, and the main effect of auxiliary vane is for reducing the pressure in sealed chamber and reduce the axial force, but meets easy crystallization operating mode, and after the main blade crystallization of impeller, the runner can become narrow, influences the performance of sediment stuff pump, and after the blade crystallization, because of the both sides all have the apron, can't clear up, can only change the accessory. The utility model discloses at the easy crystallization operating mode of light abrasion, with impeller 2 design for full open impeller, apron and auxiliary vane around having removed, by preceding pump case 1 and the work cavity of back pump cover 3 formation inclosed impeller 2, can carry out after the blade crystallization to continue to use after clearing up comprehensively, do not influence the performance of sediment thick liquid pump, improved life to because of having removed preceding back shroud and auxiliary vane, weight alleviates greatly, has improved efficiency, has practiced thrift the cost.

The middle part of the common single-pump shell slurry pump is combined by two parts, namely a rear protection plate and a pressure reducing cover, and the two parts are designed mainly because the rear protection plate is fast worn and short in service life in the regrinding working condition, and the service life of the pressure reducing cover is more than twice of that of the rear protection plate, so that the two parts are designed for reducing the replacement amount of accessories. At light abrasion operating mode, the life-span of backplate is than longer, and is very little with decompression lid life-span, for reducing part quantity, the processing of being convenient for reduces the stock, the utility model discloses with backplate and decompression lid design as an organic whole back pump cover 3, simple structure had both satisfied the requirement of light abrasion operating mode, had practiced thrift the cost of manufacture again, had improved machining efficiency, had shortened production cycle.

Be equipped with sealing shaft sleeve 5 and sealing member 6 between back pump cover 3 and the main shaft 14, sealing shaft sleeve 5 sets up the inside at sealing member 6, the upper end of bracket 11 is equipped with bearing body 10, the inside that the one end of the bearing body 10 is close to the pump body is provided with front bearing 9, front bearing 9's the outside is equipped with front bearing gland 8, front bearing gland 8 passes through bolt sealing with bearing body 10 and is connected, be equipped with between front bearing gland 8 and the sealing shaft sleeve 5 and dismantle ring 7, make things convenient for the dismantlement of impeller, the inside that the one end of the pump body was kept away from to bearing body 10 is provided with rear bearing 12, the outside of rear bearing 12 is equipped with rear bearing gland 13, rear bearing gland 13 passes through bolt sealing with bearing body 10 and is connected, sealing member 6 is mechanical seal.

The existing commonly used shaft seal form of the common slurry pump is a combined shaft seal with double end face mechanical seal and auxiliary impeller, the double end face mechanical seal needs to be communicated with cooling water to cool a dynamic and static ring friction pair, if the cooling water is not communicated in time, the mechanical seal is easy to burn, the auxiliary impeller is used for reducing the pressure of the dynamic and static rings of the mechanical seal, and the friction pressure of the dynamic and static rings of the mechanical seal is reduced. In the light abrasion condition with less solid particles, the medium in the pump cavity can be completely cooled. The utility model discloses carried out the innovative design to the bearing seal system, adopted single terminal surface not to have water injection mechanical seal, need not logical machine and seal cooling water, rely on the local circulation of medium to wash the cooling completely, with the help of the operation of impeller, make sealed intracavity medium circulate, take away terminal surface friction heat, the water economy resource. Because no cooling water is needed to be introduced, the maintenance-free effect of the slurry pump is achieved.

However, the above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims (5)

1. The utility model provides a light-duty single pump shell sediment stuff pump for light abrasion operating mode, includes the pump body, bracket and main shaft, characterized by: the pump body includes preceding pump case, impeller and back pump cover, the outside of back pump cover is equipped with the joint plate, the joint plate passes through bolted connection with the back pump cover, back pump cover passes through joint plate and preceding pump case sealing connection, preceding pump case forms inclosed work cavity with the back pump cover, the impeller is located the inside of work cavity, be equipped with sealed axle sleeve and seal assembly between back pump cover and the main shaft, sealed axle sleeve sets up in the inside of seal assembly, and the upper end of bracket is equipped with the bearing body.

2. A light duty single shell slurry pump for use in light abrasive conditions as recited in claim 1 wherein: the pump body is characterized in that a front bearing is arranged in one end, close to the pump body, of the bearing body, a front bearing gland is arranged on the outer side of the front bearing, and the front bearing gland is connected with the bearing body in a sealing mode through bolts.

3. A light duty single shell slurry pump for use in light abrasive conditions as recited in claim 2 wherein: and a dismounting ring is arranged between the front bearing gland and the sealing shaft sleeve.

4. A light duty single shell slurry pump for use in light abrasive conditions as recited in claim 1 wherein: the pump body is characterized in that a rear bearing is arranged in one end, away from the pump body, of the bearing body, a rear bearing gland is arranged on the outer side of the rear bearing, and the rear bearing gland is connected with the bearing body in a sealing mode through bolts.

5. A light duty single shell slurry pump for use in light abrasive conditions as recited in claim 1 wherein: the sealing component is a mechanical seal.

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