CN217602941U

CN217602941U - Slurry pump structure for improving hydraulic efficiency and prolonging service life of overflowing part

Info

Publication number: CN217602941U
Application number: CN202221487218.0U
Authority: CN
Inventors: 李惠齐; 李文婧; 刘美; 杨志强
Original assignee: Xiangyang Hongshen Zhongtian Machinery Technology Co ltd
Current assignee: Xiangyang Hongshen Zhongtian Machinery Technology Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-10-18
Anticipated expiration: 2032-06-15

Abstract

The utility model provides an improve hydraulic efficiency and overflow a life's sediment stuff pump structure relates to sediment stuff pump technical field, including transmission shaft, the pump body, pump cover and impeller, the pump body and pump cover internal surface are provided with the sheath around the impeller, are provided with apron plate and backplate around the impeller, and the surface of apron plate, backplate is equipped with the auxiliary blade. The side of backplate is equipped with first bulge loop, the side of preceding backplate is equipped with the second bulge loop. The utility model discloses utilize preceding backplate and second bulge loop, back backplate and first bulge loop to form semi-enclosed cavity, cover the auxiliary blade of impeller in the inside, form the auxiliary blade room for the impeller is at normal rotatory during operation, and the leakage quantity through the clearance between impeller blade and the backplate plane reduces, and volume loss reduces, thereby improves the efficiency of pump, slows down the wearing and tearing of impeller and backplate, prolongs the life of impeller, backplate and sheath.

Description

Slurry pump structure capable of improving hydraulic efficiency and prolonging service life of overflowing part

Technical Field

The utility model relates to a sediment stuff pump technical field especially relates to an improve hydraulic efficiency and overflow a life's sediment stuff pump structure.

Background

The slurry pump is a machine which increases the energy of solid-liquid mixed medium by the action of centrifugal force (rotation of the impeller of the pump), and converts electric energy into kinetic energy and potential energy of the medium, and is mainly suitable for: the fields of mine, power plant, dredging, metallurgy, chemical industry, building materials, petroleum and other industries. The working principle is as follows: under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and obtains energy, and the energy is separated from the outer edge of the impeller at high speed and enters a volute pump casing, in which the liquid is decelerated due to the gradual expansion of a flow passage, part of kinetic energy is converted into static pressure energy, and finally the static pressure energy flows into a discharge pipeline at higher pressure and is sent to a required place. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller, and the liquid is continuously pressed into the impeller because the pressure above the liquid level of the storage tank is higher than the pressure at the inlet of the pump.

In the structure of the slurry pump, the structure mainly comprises a transmission shaft, an impeller, a pump body, a pump cover, a front protection plate, a sheath, a rear protection plate and the like, and in the use process, as overflowing parts (mainly comprising the impeller, the sheath, the front protection plate, the rear protection plate and the like) of the slurry pump are in direct contact with each other to form a particularly complex slurry medium, the abrasion is fast. The seam between the sheath and the guard plate and the gap between the guard plate and the impeller are easily washed and abraded by slurry, so that the larger the gap is, the longer the gap is, and the service life is influenced.

In addition, the impeller is arranged between the front guard plate and the rear guard plate, and a gap exists between the impeller and the front guard plate as well as between the impeller and the rear guard plate, so that slurry leakage is caused, and the hydraulic efficiency is influenced. Therefore, the utility model provides an improve hydraulic efficiency and overflow a life's sediment stuff pump structure in order to solve the problem that exists among the prior art.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides an improve hydraulic efficiency and overflow a life's sediment stuff pump structure. This sediment stuff pump structure makes the leakage quantity through the clearance between impeller and the backplate plane reduce, and volume loss reduces to improve the efficiency of pump, and reduce ground paste to the washing away of backplate and impeller, improved the life who overflows the piece.

For realizing the purpose of the utility model, the utility model discloses a following technical scheme realizes: the pump comprises a transmission shaft, a pump body, a pump cover and an impeller, wherein protective sleeves are arranged around the impeller in the pump body and the pump cover, a front protective plate and a rear protective plate are arranged in front of and behind the impeller, auxiliary blades are arranged on the surfaces of the front protective plate and the rear protective plate, the protective sleeves are in a volute shape and are fixedly connected with the inner walls of the pump body and the pump cover, two end surfaces of the protective sleeves are respectively abutted against the peripheral surface of the front protective plate and the peripheral surface of the rear protective plate, a first convex ring is arranged on the side surface of the rear protective plate, and a second convex ring is arranged on the side surface of the front protective plate; the rear guard plate, the first convex ring, the front guard plate and the second convex ring respectively form a semi-closed cavity, and the auxiliary blade of the impeller is covered in the semi-closed cavity.

The inner diameter of the first convex ring is 3-4mm larger than the outer diameter of the impeller.

The height of the first convex ring is 10-15mm, and the thickness of the first convex ring in the radial direction is 10-20mm.

A second convex ring is arranged on the side surface of the front guard plate; the inner diameter of the second convex ring is 3-4mm larger than the outer diameter of the impeller.

The height of the second convex ring is 10-15mm, and the thickness of the second convex ring in the radial direction is 10-20mm.

Two sides of the impeller are respectively covered in the first convex ring and the second convex ring to rotate.

Furthermore, an inlet pipe is arranged on the pump cover and communicated with the pump bin, and outlet pipes are arranged on the pump body and the pump cover.

The further improvement lies in that: the pump cover is kept away from to the pump body one side position department is equipped with the motor, and the inside rotation of motor is equipped with the pivot, the one end of pivot with the transmission shaft of impeller is connected.

The further improvement lies in that: the lower extreme of motor is equipped with the bracket, and the bracket with motor welded fastening.

The utility model has the advantages that:

1. the utility model discloses utilize preceding backplate and second bulge loop, backplate and first bulge loop to form semi-enclosed cavity, cover the accessory blade of impeller in the inside for the impeller is at normal rotatory during operation, and through the leakage volume that leaks in clearance between impeller blade and the backplate plane reduce, and the volumetric loss reduces, thereby improves the efficiency of pump.

2. The utility model discloses increase the bulge loop structure on the backplate plane after, possess certain guide effect to the ground paste, reduce the impact force of ground paste offset brush wearing and tearing department, improve life.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic view of a first convex ring and a second convex ring of the present invention;

FIG. 3 is a side view of the backplate of the present invention;

FIG. 4 is a front view of the rear fender of the present invention;

FIG. 5 is a side view of the front fender of the present invention;

FIG. 6 is a front view of the front fender of the present invention;

wherein: 1. a pump body; 2. a pump cover; 3. a rear guard plate; 4. a front guard plate; 5. a sheath; 6. a first convex ring; 7. a second convex ring; 8. an impeller; 9. an inlet pipe; 10. an outlet pipe; 11. a pressure reducing cover; 12. minor leaves; 13. a motor; 14. a drive shaft; 15. a bracket.

Detailed Description

In order to deepen the understanding of the present invention, the following embodiments are combined to further detail the present invention, and the present embodiment is only used to explain the present invention, and does not constitute the limitation of the protection scope of the present invention.

According to fig. 1, 2, 3, 4, 5, and 6, the present embodiment provides a slurry pump structure for improving hydraulic efficiency and prolonging the service life of an overflowing part, including a transmission shaft 14, a pump body 1, a pump cover 2, and an impeller 8, where a sheath 5 is disposed around the impeller 8 in the pump body 1 and the pump cover 2, a front guard plate 4 and a rear guard plate 3 are disposed in front of and behind the impeller 8, sub-blades 12 are disposed on the surfaces of the front guard plate 4 and the rear guard plate 3, the sheath 5 is in a volute shape and is fixedly connected with the inner walls of the pump body and the pump cover, two end surfaces of the sheath 5 are respectively abutted against the peripheral surface of the front guard plate 4 and the peripheral surface of the rear guard plate 5, a first convex ring 6 is disposed on the side surface of the rear guard plate 3, and a second convex ring 7 is disposed on the side surface of the front guard plate 4; the rear guard plate 3, the first convex ring 6, the front guard plate 4 and the second convex ring 7 respectively form a semi-closed cavity, and the impeller 8 is covered in the semi-closed cavity.

The rear guard plate, the first convex ring, the front guard plate and the second convex ring form a semi-closed cavity, and the edge of the impeller is covered in the semi-closed cavity.

The impeller 8 is positioned between the rear guard plate 3 and the front guard plate 4, and two sides of the impeller 8 are respectively covered in the first convex ring 6 and the second convex ring 7. The backplate plane has formed semi-closed cavity with the ring that increases, covers the auxiliary vane of 8 both sides of impeller in the inside, from the pump structure like this, has formed the auxiliary vane room for impeller 8 is at normal rotatory during operation, and the leakage through the clearance between 8 blades of impeller and the backplate plane reduces, and volume loss reduces, thereby improves the efficiency of pump.

The inner diameters of the first convex ring 6 and the second convex ring 7 are 3-4mm larger than the outer diameter of the impeller 8, the radial thicknesses of the first convex ring 6 and the second convex ring 7 are 10-20mm, and the heights of the first convex ring 6 and the second convex ring 7 are about 10mm crossed with the impeller 8.

The utility model discloses a slurry pump structure, backplate 3 and first bulge loop 6, front guard plate 4 and second bulge loop 7 all form semi-enclosed cavity, and semi-enclosed cavity covers impeller 8's auxiliary blade in the inboard. Therefore, in the pump structure, an auxiliary vane chamber is formed, so that when the impeller 8 works in a normal rotation mode, the leakage amount of the clearance between the vanes of the impeller 8 and the plane of the guard plate is reduced, the volume loss is reduced, and the efficiency of the pump is improved.

The pump cover 2 is provided with an inlet pipe 9, and the pump body 1 and one end of the pump cover 2 are provided with an outlet pipe 10. The inlet pipe 9 is used for sucking up the slurry and the outlet pipe 10 is used for discharging the slurry.

The outer side of the pump body 1 is provided with a pressure reducing cover 11, and the rear side of the impeller 8 is provided with an auxiliary blade 12 for balancing the pressure in the axial direction of the impeller.

One side that pump body 1 kept away from pump cover 2 is equipped with motor 13, and motor 13 is equipped with the pivot, the one end of pivot with transmission shaft 14 of impeller 8 is connected. When the device is used, the transmission shaft 14 rotates to drive the impeller 8 to rotate, so that vacuum is formed, and liquid is pumped and drained.

The lower extreme of motor 13 is equipped with bracket 15, and bracket 15 with motor 13 welded fastening. Used for fixedly placing the whole pump.

The utility model discloses increase second bulge loop 7 structure on backplate 4 before, increase first bulge loop 6 structure at backplate 3, make backplate plane and the ring that increases form semi-enclosed cavity, cover the auxiliary blade of impeller 8 inside, from the pump structure like this, the auxiliary blade room has been formed, make impeller 8 when normal rotatory work, through the leakage quantity in the clearance between impeller 8 blade and the backplate plane reduce, the volume loss reduces, thereby improve the efficiency of pump, the power of transmission shaft 14 also can corresponding reduction, reduce power consumption, energy saving; just the utility model discloses increase the ring structure on the backplate plane after, possess certain guide effect to the ground paste, reduce the impact force of ground paste offset brush wearing and tearing department 21, through verifying, life extension more than one time.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A slurry pump structure capable of improving hydraulic efficiency and prolonging service life of a overflowing part comprises a transmission shaft (14), a pump body (1), a pump cover (2) and an impeller (8), wherein protective sleeves (5) are arranged on the inner surfaces of the pump body (1) and the pump cover (2) at the periphery of the impeller (8), a front protective plate (4) and a rear protective plate (3) are arranged in front of and behind the impeller (8), auxiliary blades (12) are arranged on the surfaces of the front protective plate (4) and the rear protective plate (3), the protective sleeves (5) are fixedly connected with the inner walls of the pump body and the pump cover in a volute shape, two end faces of the protective sleeves (5) are respectively abutted to the peripheral face of the front protective plate (4) and the peripheral face of the rear protective plate (3), a first convex ring (6) is arranged on the side face of the rear protective plate (3), and a second convex ring (7) is arranged on the side face of the front protective plate (4); the rear protection plate (3), the first convex ring (6), the front protection plate (4) and the second convex ring (7) are respectively provided with a semi-closed cavity, and the semi-closed cavity covers the auxiliary blade of the impeller (8).

2. The slurry pump structure for improving hydraulic efficiency and prolonging service life of the overflowing part according to claim 1, wherein: the inner diameter of the first convex ring (6) is 3-4mm larger than the outer diameter of the impeller (8).

3. The slurry pump structure for improving hydraulic efficiency and prolonging service life of the overflowing part according to claim 2, wherein: the height of the first convex ring (6) is 10-15mm, and the thickness of the first convex ring (6) in the radial direction is 10-20mm.

4. The slurry pump structure for improving hydraulic efficiency and prolonging service life of the overflowing part according to claim 1, wherein: the inner diameter of the second convex ring (7) is 3-4mm larger than the outer diameter of the impeller (8).

5. The slurry pump structure for improving hydraulic efficiency and prolonging the service life of the overflowing member according to claim 4, wherein: the height of the second convex ring (7) is 10-15mm, and the thickness of the second convex ring (7) in the radial direction is 10-20mm.

6. The slurry pump structure for improving hydraulic efficiency and prolonging service life of the overflowing part according to claim 1, wherein: and a pressure reducing cover (11) is arranged on the outer side of the pump body (1).

7. The slurry pump structure for improving hydraulic efficiency and prolonging service life of the overflowing part according to claim 1, wherein: one side of the pump body (1) far away from the pump cover (2) is provided with a motor (13), and a rotating shaft of the motor (13) is connected with a transmission shaft (14) of the impeller.

8. The slurry pump structure for improving hydraulic efficiency and prolonging service life of the overflowing part according to claim 7, wherein: the lower extreme of motor (13) is equipped with bracket (15), and bracket (15) with motor (13) welded fastening.