CN213325636U

CN213325636U - Wharf grain elevator with multistage centrifugal fan air source

Info

Publication number: CN213325636U
Application number: CN202022180755.8U
Authority: CN
Inventors: 赵星星
Original assignee: Jiangsu Guruis Mechanical And Electrical Engineering Co ltd
Current assignee: Jiangsu Guruis Mechanical And Electrical Engineering Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-01
Anticipated expiration: 2030-09-29

Abstract

A wharf grain elevator with a multistage centrifugal fan air source belongs to the technical field of port machinery and pneumatic transmission. Comprises an air source, a dust remover, a material suction pipeline, a main machine chamber, a discharge cone hopper and a suction nozzle; the air source is arranged at the rear end of the main machine chamber, the discharging cone hopper is arranged below the main machine chamber, and the dust remover is positioned above the discharging cone hopper; the air source is a multistage centrifugal fan, an air inlet of the multistage centrifugal fan is connected with an air outlet of the dust remover through an air pipe, and a hopper at the bottom of the dust remover is connected with a discharge cone hopper through an air-closing discharger; the suction nozzle is connected to one end of the material suction pipeline, and the other end of the material suction pipeline is communicated with a hopper at the bottom of the dust remover. The utility model discloses a multistage centrifugal fan of high performance belongs to turbine fan technical principle as the negative pressure air supply fan of pier pneumatic grain elevator, multistage centrifugal fan, belongs to aerodynamic machinery, possesses technical characterstic such as efficiency height, small in noise, automatic air regulation, stable performance, long service life essentially.

Description

Wharf grain elevator with multistage centrifugal fan air source

Technical Field

The utility model relates to a pier pneumatic grain elevator of multistage centrifugal fan air supply belongs to harbour machinery technology and air conveying technical field.

Background

The wharf grain elevator is a continuous ship unloader for port bulk cargo, and adopts the vacuum negative pressure pneumatic conveying principle to continuously unload grains, cement, mineral powder and other bulk materials. When the pneumatic grain elevator is used for unloading grain materials from a ship, the pneumatic grain elevator is generally called a wharf grain elevator. Compared with a bulk cargo grab bucket ship unloader, the bulk cargo grab bucket ship unloader has the characteristics of high efficiency, environmental protection and continuous automatic conveying, is the best bulk cargo ship unloader, and has wide application prospect.

The core equipment part of the wharf grain elevator is a negative pressure air source system, the traditional negative pressure air source equipment generally adopts a Roots blower, but the Roots blower has the defects of low energy efficiency, high noise, unadjustable air quantity, performance reduction caused by mechanical abrasion and the like in an air source, the whole technical level of the wharf grain elevator is severely restricted, and the application effect of the wharf grain elevator is greatly reduced. The performance of negative pressure air source equipment is the key of the technical level of the wharf grain elevator, and the problem is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

The not enough to above-mentioned prior art, the utility model provides a pier pneumatic grain elevator of multistage centrifugal fan air supply.

The technical scheme of the utility model as follows:

a dock grain elevator with a multistage centrifugal fan air source is characterized by comprising an air source, a dust remover, a material suction pipeline, a main machine chamber, a discharging cone hopper and a suction nozzle; the air source is arranged at the rear end of the main machine chamber, the discharging cone hopper is arranged below the main machine chamber, and the dust remover is positioned above the discharging cone hopper; the air source is a multistage centrifugal fan, an air inlet of the multistage centrifugal fan is connected with an air outlet of the dust remover through an air pipe, and a hopper at the bottom of the dust remover is connected with a discharge cone hopper through an air-closing discharger; the suction nozzle is connected to one end of the material suction pipeline, and the other end of the material suction pipeline is communicated with a hopper at the bottom of the dust remover.

Furthermore, the dust remover is arranged above the main machine room and is connected with the main machine room through a flange bolt to form an integral structure.

Furthermore, the air outlet of the multistage centrifugal fan is connected with a silencer arranged at the top of the main machine room.

Furthermore, a gantry is arranged below the main machine room, and the bottom of the main machine room is connected with a swing mechanism above the gantry.

Furthermore, the front end of the main machine room is hinged with a material suction arm support, and the material suction pipeline is arranged on the material suction arm support; and a pitching driving mechanism is arranged above the main machine chamber to perform pitching adjustment on the material suction arm frame.

Furthermore, the material suction pipeline is composed of a horizontal material suction pipe and a vertical material suction pipe, and the horizontal material suction pipe is arranged on the material suction arm support.

Furthermore, the horizontal material suction pipe and the vertical material suction pipe are of telescopic structures.

Furthermore, the material suction arm support is provided with a chain hoist or a steel wire rope winding device to hoist the vertical material suction pipe, so that the vertical material suction pipe can be vertically stretched.

The utility model discloses a multistage centrifugal fan of high performance belongs to turbine fan technical principle as the negative pressure air source fan of pier pneumatic grain elevator, multistage centrifugal fan, belongs to aerodynamic machinery, possesses technical characterstic such as efficiency height, small in noise, automatic air regulation, stable performance, long service life in essence, has overcome the inherent shortcoming of traditional roots's fan air supply completely, is the air supply equipment of the most suitable sign indicating number head pneumatic grain elevator transport technology characteristics.

The utility model discloses promoted current pier grain elevator's whole technical level greatly, possessed characteristics such as high efficiency, energy-conservation, environmental protection, can really satisfy the operation of unloading of the bulk grain of harbour, pier or other light bulk cargoes. Has wide application prospect and strong market competitiveness and can create good social benefit and economic benefit.

Drawings

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

FIG. 2 is a schematic diagram of the operation of the present invention;

in the figure: 1-a multistage centrifugal fan, 2-a main machine chamber, 3-a dust remover, 4-an airlock discharger, 5-a discharge cone hopper, 6-a swing mechanism, 7-a gantry, 8-a material suction arm support, 9-a horizontal material suction pipe, 10-a vertical material suction pipe, 11-a suction nozzle, 12-a pitching driving mechanism, 13-a loop chain hoist or a steel wire rope winding device and 14 air pipes.

Detailed Description

In order to make the technical principle, structural features, achievement purpose and effect of the utility model easy to understand and understand, the utility model is further explained by combining the specific figure below.

1. The utility model discloses a multistage centrifugal fan air supply pier grain elevator adopts the multistage centrifugal fan of high performance as the negative pressure air supply fan of pier grain elevator.

2. The utility model discloses a pier pneumatic grain elevator structure is shown in figure 1, and it contains: the device comprises functional structural components such as a multi-stage centrifugal fan air source system 1, a main machine room 2, a dust remover 3, an airlock discharger 4, a discharge cone hopper 5, a swing mechanism 6, a portal frame 7, a material suction arm support 8, a horizontal material suction pipe 9, a vertical material suction pipe 10, a suction nozzle 11 and the like.

3. The material suction pipe is installed on the material suction arm support, the horizontal material suction pipe can horizontally stretch out and draw back (through a hoisting mechanism on the arm support, namely a pitching driving mechanism), and the vertical grain elevator 10 can vertically stretch out and draw back (through a chain hoist or a steel wire rope hoisting device). The horizontal extension meets the operation range of the ship in the width direction, and the vertical extension meets the operation requirements of water level fall and ship depth change.

4. The main machine room and functional components such as the fan air source system, the dust remover, the material suction arm support, the material suction pipeline and the like which are arranged on the main machine room form upper equipment of the wharf grain elevator. The bottom of the main machine room is connected with a slewing mechanism 6 above a portal frame 7, the slewing mechanism generally comprises a large slewing bearing and a slewing reducer driven by an electric or hydraulic motor, and when the slewing mechanism acts, the upper equipment of the wharf grain elevator is driven to rotate integrally to cover an operation area along the length direction of the ship.

5. The multistage centrifugal fan air source system comprises a complete equipment unit consisting of all equipment parts such as a fan, a motor or a diesel engine, a transmission part, a machine base, an electric control system and the like, and is arranged in a main machine chamber with a closed steel structure.

6. The dust remover 3 is arranged above the main machine room and is connected with the main machine room into an integral structure through a normal connecting bolt.

7. The air inlet of the multistage centrifugal fan is connected with the air outlet of the dust remover through a steel pipeline (air pipe), and the air outlet of the multistage centrifugal fan is connected with a silencer arranged at the top of the main machine chamber.

8. The material suction arm support is connected with a steel structure at the front end of the main machine room through a hinge shaft, and pitching motion is realized through a pitching driving mechanism (a hydraulic oil cylinder or a steel wire rope winch) arranged above the main machine room.

9. The material suction pipeline is arranged on the material suction arm support, the horizontal material suction pipe can horizontally stretch out and draw back (through a hoisting mechanism on the arm support), and the vertical grain elevator can vertically stretch out and draw back (through a chain hoist or a steel wire rope hoisting device). The horizontal extension meets the operation range of the ship in the width direction, and the vertical extension meets the operation requirements of water level fall and ship depth change.

10. The main machine room and functional components such as the fan air source system, the dust remover, the material suction arm support, the material suction pipeline and the like which are arranged on the main machine room form upper equipment of the wharf grain elevator. The bottom of the main machine room is connected with a rotary mechanism above the door frame, the rotary mechanism generally comprises a large-scale rotary support and a rotary speed reducer driven by an electric or hydraulic motor, and when the rotary mechanism acts, the upper equipment of the wharf grain elevator is driven to integrally rotate, so that the coverage of an operation area along the length direction of the ship is realized.

The working principle of the multistage centrifugal fan wharf grain elevator of the utility model is shown in figure 2. When the wharf grain elevator works, after the multistage centrifugal fan is started to operate, an air inlet of the fan is connected with the dust remover through the air pipe, high negative pressure (-30 to-40 KPa) is formed in a barrel of the dust remover, siphonage is generated on materials (grains) at the suction nozzle relative to normal atmospheric pressure difference at the suction nozzle at the tail end of the suction pipeline, the materials are mixed with air at the suction nozzle and then enter the suction pipeline, the suction pipeline is connected with the dust remover, the materials enter a hopper of the dust remover after passing through the suction pipeline, are conveyed to a discharge hopper through an air-shut discharger and enter a subsequent conveying process after landing of the materials, such as loading or other conveying modes. After the dust-containing gas is filtered by the dust remover, clean air enters the fan and is discharged into the atmosphere through a silencer at an air outlet of the fan.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, and the description in the foregoing specification is only illustrative of the principles of the present invention, without departing from the technical principles and processes of the present invention, the present invention may also have various changes and modifications, and such changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A dock grain elevator with a multistage centrifugal fan air source is characterized by comprising an air source, a dust remover, a material suction pipeline, a main machine chamber, a discharging cone hopper and a suction nozzle; the air source is arranged at the rear end of the main machine chamber, the discharging cone hopper is arranged below the main machine chamber, and the dust remover is positioned above the discharging cone hopper; the air source is a multistage centrifugal fan, an air inlet of the multistage centrifugal fan is connected with an air outlet of the dust remover through an air pipe, and a hopper at the bottom of the dust remover is connected with a discharge cone hopper through an air-closing discharger; the suction nozzle is connected to one end of the material suction pipeline, and the other end of the material suction pipeline is communicated with a hopper at the bottom of the dust remover.

2. The dock grain elevator of claim 1, wherein the dust collector is mounted above the main housing and is bolted to the main housing via a flange to form a unitary structure.

3. The wharf grain elevator with the multi-stage centrifugal fan air source as claimed in claim 1, wherein the air outlet of the multi-stage centrifugal fan is connected with a silencer installed at the top of the main room.

4. The wharf grain elevator with the multistage centrifugal fan air source as claimed in claim 1, wherein a gantry is arranged below the main chamber, and the bottom of the main chamber is connected with a swing mechanism above the gantry.

5. The wharf grain elevator with the multistage centrifugal fan air source as claimed in claim 1, wherein a material suction arm support is hinged to the front end of the main machine room, and the material suction pipeline is arranged on the material suction arm support; and a pitching driving mechanism is arranged above the main machine chamber to perform pitching adjustment on the material suction arm frame.

6. The wharf grain elevator with the multi-stage centrifugal fan air source as claimed in claim 5, wherein the material suction pipeline is composed of a horizontal material suction pipe and a vertical material suction pipe, and the horizontal material suction pipe is arranged on the material suction arm support.

7. The wharf grain elevator with the multi-stage centrifugal fan air source as claimed in claim 6, wherein the horizontal material suction pipe and the vertical material suction pipe are of a telescopic structure.

8. The wharf grain elevator with the multistage centrifugal fan air source as claimed in claim 7, wherein the material suction arm support is provided with a chain hoist or a steel wire rope winding device to hoist the vertical material suction pipe so that the vertical material suction pipe can vertically extend and retract.