CN217481546U

CN217481546U - Submerged slurry pump

Info

Publication number: CN217481546U
Application number: CN202221634679.6U
Authority: CN
Inventors: 李立; 杨永腾; 吕玮朋; 张乾; 陈建粮; 陈雷; 屈茂芹
Original assignee: Shandong Luke Automation Technology Co ltd; Shandong University of Science and Technology
Current assignee: Shandong Luke Automation Technology Co ltd; Shandong University of Science and Technology
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-23
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a submerged slurry pump, which relates to the field of liquid material pumping equipment, and is improved on the basis of the traditional slurry pump, and a semi-open impeller provides an open blade flow passage to ensure large-particle and high-concentration material feeding; the high-strength alloy stirring blades are additionally arranged at the feeding port, so that forced feeding is realized, sludge is more effectively deposited and sprayed into a rotating vortex, and high-concentration conveying is realized; the pump body shell, the impeller and the stirring blades are made of high-strength wear-resistant alloy materials, so that the service life of the equipment is prolonged, and the maintenance frequency is reduced; the pump main shaft is designed into a low-neck large-diameter transmission structure, so that the transmission torque and stability are improved, the slag discharge efficiency is improved, the overall height of the device is reduced, and the device is suitable for being used under a mine; the shaft seal adopts a unique mechanical seal structure, can effectively balance the pressure inside and outside the oil chamber, is additionally provided with the reverse auxiliary impeller, and reduces the impact of high-pressure water on the seal structure, thereby preventing the motor from being damaged and ensuring long-time reliable operation.

Description

Submerged slurry pump

Technical Field

The utility model relates to a sediment stuff pump field, specific submerged formula sediment stuff pump that says so.

Background

The slurry pump is a machine capable of increasing the energy of solid-liquid mixed medium by means of centrifugal force, and can convert the electric energy into kinetic energy and potential energy of medium, and is mainly used in the fields of mine, power plant, dredging, metallurgy, chemical industry, building material and petroleum industry. 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 liquid leaves the outer edge of the impeller at high speed and enters the volute pump shell. In the pump shell, the liquid is decelerated due to the gradual expansion of the 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.

The slurry pump delivers a mixture of solid particles containing slag and water, but in principle the slurry pump is one type of centrifugal pump. The existing slurry pump has the defects of poor sealing effect, short service life, poor reliability and the like.

Disclosure of Invention

For solving the technical problem that exists, the utility model provides a submerged formula sediment stuff pump, simple structure, sealing performance and life are showing and are improving, realize the high-efficient transport of large granule, high concentration material, and the power consumption is low, and is efficient, and the commonality is strong.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the utility model provides a submerged formula sediment stuff pump, includes motor, shaft coupling, pump main shaft and the pump body, the drive shaft of motor passes through the shaft coupling and is connected with the pump main shaft, the other end of pump main shaft sets up in the pump body to the pump main shaft sets up the impeller in the part upper end of arranging pump body inner chamber in, pump body one side set up the discharging pipe and communicate with pump body inner chamber, the pump main shaft height sets up to 0.4-0.6 meter, and the diameter sets up to 70-80cm, the top bearing oil seal structure below of pump main shaft sets up reverse supplementary impeller, the impeller sets up to semi-open impeller, pump body bottom pan feeding mouth department sets up stirring vane, is connected through axle and pump owner bottom.

The pump body shell and the impeller are both made of wear-resistant manganese-chromium alloy materials.

The stirring blades are made of high-strength alloy materials.

The oil seal structure is a framework type high-pressure oil seal structure.

The utility model is improved on the basis of the traditional slurry pump, and the semi-open impeller provides an open blade flow passage, thereby ensuring large-particle and high-concentration material feeding; the high-strength alloy stirring blades are additionally arranged at the feeding port, so that forced feeding is realized, sludge deposition is more effectively sprayed into a rotating vortex, and high-concentration conveying is realized; the pump body shell, the impeller and the stirring blade are made of high-strength wear-resistant alloy materials, so that the service life of equipment is prolonged, and the maintenance frequency is reduced; the pump main shaft is designed into a short-neck large-diameter transmission structure, so that the transmission torque and stability are improved, the slag discharge efficiency is improved, the overall height of the device is reduced, and the device is suitable for being used underground; the shaft seal adopts a unique mechanical seal structure, can effectively balance the pressure inside and outside an oil chamber, is additionally provided with a reverse auxiliary impeller, and reduces the impact of high-pressure water on the seal structure, thereby preventing a motor from being damaged and ensuring long-time reliable operation; the parts are standardized and high in universalization degree, the operation is simple and convenient, the energy consumption is low, and the method is suitable for large-scale popularization and application.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The present invention is described in detail below with reference to the following drawings and specific embodiments:

as shown in fig. 1, this submerged slurry pump includes motor 1, shaft coupling 2, pump main shaft 3 and the pump body 4, motor 1's drive shaft passes through shaft coupling 2 and is connected with pump main shaft 3, the other end of pump main shaft 3 sets up in the pump body 4 to pump main shaft 3 arranges the partial upper end of the 4 inner chambers of the pump body in and sets up

impeller

41, 4 one side of the pump body sets up discharging pipe 5 and communicates with 4 inner chambers of the pump body, pump main shaft 3 highly sets up to 0.4-0.6 meter, and the diameter sets up to 70-80cm, the top bearing oil seal structure 31 below of pump main shaft 3 sets up reverse auxiliary impeller 32, impeller 41 sets up to semi-open impeller, the department of pan feeding mouth in the bottom of the pump body (4) sets up stirring vane 42, is connected with 3 bottoms of pump main shaft through the axle.

Impeller 41 adopts the semi-open impeller, and the semi-open impeller has increased through the particle diameter, makes to reach 40mm through the particle diameter, makes the sediment stuff pump can be suitable for special operating mode better. The reverse auxiliary impeller 32 can press down the high pressure water formed by the rotation of the impeller 41 to protect the oil seal mechanism 31 from being damaged by the high pressure water, thereby protecting the normal operation of the motor 1. The arrangement of the stirring blades 42 realizes the forced feeding of the feeding port of the pump body 4 and the smooth conveying of large particles and high-concentration materials.

Preferably, the casing of the pump body 4 and the impeller 41 are both made of wear-resistant manganese-chromium alloy materials.

Preferably, the stirring blade 42 is made of a high-strength alloy material.

Preferably, the oil seal structure 31 is a framework type high-pressure oil seal structure.

The liquid-down slurry pump belongs to the single-stage, single-suction and vertical impurity pumps. The pump can be directly matched with a motor and arranged in a medium liquid flow to work, and can also be matched and combined with an underwater operation unit system and a power system (a motor or a diesel engine) to form an operation machine integrating a plurality of working procedures such as digging, conveying, filling and the like. The slurry pump is suitable for various medium flow liquids with the medium content not more than 40 percent and the pH value within the range of 5-9, and can be widely applied to the fields of industry and agriculture, such as ash dumping of power plants, mine ore dressing, chemical plants, paper mills, coal washery, coking plants, iron plants, construction piling, urban environmental sanitation, dam construction and silt back construction of rivers and lakes, water conservancy projects, farmland drainage and irrigation and the like. When the content of the medium is low, the flow can be improved by more than 30% only by replacing the impeller 41, various submersible pumps, clean water pumps and sewage pumps can be replaced for operation in a certain range, and the device has the characteristics of same usability, convenience in maintenance, multiple purposes and remarkable economic benefit.

The utility model discloses in the use, after pressurizing water through the high-pressure pump system, strike the stirring to carrying thing (mud, husky, buggy, ore powder etc.) through the squirt injection, form the medium liquid, again by the utility model discloses the following formula sediment stuff pump of liquid carries it, piles up at the assigned position, through the pan feeding mouth feeding of the 4 below of the pump body, through discharging pipe 5 discharge to the assigned position behind impeller 41 and stirring vane 42 stirring. To facilitate the displacement operation, the pump is usually secured to a pair of floats so that it can move freely over a large area. If the conveying distance is longer, two or more slurry pumps can be connected in series for use. The utility model discloses pump body bottom does not have the bottom valve, need not the water injection during start-up, shuts down automatic water return, and the pipeline is not frozen in winter operation, and the operation maintenance is more simple and convenient than traditional liquid following formula sediment stuff pump, and the performance is more superior.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The utility model provides a submerged formula sediment stuff pump, includes motor (1), shaft coupling (2), pump main shaft (3) and the pump body (4), the drive shaft of motor (1) passes through shaft coupling (2) and is connected with pump main shaft (3), the other end of pump main shaft (3) sets up in the pump body (4) to pump main shaft (3) are arranged in the part upper end of pump body (4) inner chamber and are set up impeller (41), pump body (4) one side sets up discharging pipe (5) and communicate with pump body (4) inner chamber, its characterized in that, pump main shaft (3) height sets up to 0.4-0.6 meter, and the maximum diameter sets up to 70-80cm, the top bearing oil seal structure (31) below of pump main shaft (3) sets up reverse supplementary impeller (32), impeller (41) set up to semi-open type, the pan feeding mouth department sets up stirring vane (42) bottom the pump body (4), is connected with the bottom end of the pump main shaft (3) through a shaft.

2. The submersible slurry pump according to claim 1, wherein the pump body (4) housing and the impeller (41) are made of wear-resistant manganese-chromium alloy materials.

3. The submersible slurry pump of claim 1, wherein the agitator blades (42) are made of a high strength alloy material.

4. A submerged slurry pump according to claim 1, characterized in that the oil seal (31) is arranged as a skeleton-like high-pressure oil seal.