RU73320U1 - PNEUMOTRANSPORT COMPLEX FOR MORTARING AND MOVEMENT OF BULK MATERIALS - Google Patents

Abstract

The utility model relates to a device used for unloading and moving bulk materials packed in various containers, including flexible containers “BIG-BAG”, into silo containers or into a production line, and can be used in the building materials industry and construction sites .

The technical result of the utility model is the implementation of unloading and moving by pneumotransporting the material in the optimal mode at a given level of material in the hopper. A pneumatic transport complex for unloading and moving bulk materials into silos or into a production line, consisting of a frame on which a hopper with a boring device, an exhaust filter, an electric vibrator and a material level indicator, a screw pneumatic conveying system, a compressor, an electric control and control system, pipelines, cantilever slewing crane, characterized in that for moving the material in the optimal mode and ensuring compliance with sanitary standards in the event of a decrease in the level of When the material in the hopper is reached to the specified value, the auger drive motor is automatically turned off and the check valve is closed accordingly, eliminating air breakthroughs from the mixing chamber into the hopper. Fig. one.

Description

The utility model relates to a device used for unloading and moving bulk materials packed in various containers, including flexible containers “BIG-BAG”, into silo containers or into a production line, and can be used in the building materials industry and construction sites .

Known devices for unloading and feeding silo containers of components of dry building mixtures delivered in paper bags or flexible containers "BIG-BAG". They consist of a hopper with an unloading device, a chamber pneumatic pump, material and air pipelines, a compressor, bag filters and an electric control system (A.V. Teleshov et al. Production of dry building mixes: installations and factories of low power. “Building materials” No. 9 - 2002. Fig. 14 and 15.).

The use of a chamber pneumatic pump in this equipment is associated with a cyclic mode of supply of overloaded materials and an increased flow of conveying compressed air, which is necessary both for the transportation process and for purging the transport pipeline during the chamber pump loading cycle. This mode of transportation complicates the handling operations and is associated with increased energy consumption for the production of compressed air.

The closest design in technical essence to the claimed utility model is a pneumatic conveying installation, placed under a silo tank or hopper, comprising a housing with a cylindrical nozzle in which a pressure screw is located, driven by an electric motor and to which a mixing chamber with

check valve. A transport pipeline is connected to the outlet flange of the mixing chamber, and the transporting compressed air from the compressor is supplied to its aeration plate or nozzle (I.P. Malevich et al. Transportation and storage of powdery and building materials. M .: Stroyizdat, 1984, p.32, fig. .fourteen.).

The disadvantage of the prototype is the need for a significant amount of material in the silo or hopper, which must come to the pressure screw of the pneumatic installation, ensuring its continuous and uniform loading and the creation of the necessary dust plugs from the transported material in front of the check valve.

With insufficient loading of the auger, interruptions in the operation of the pneumatic conveying installation, breakthroughs of compressed air through the auger, and violations of sanitary and hygienic requirements occur.

The essence of the utility model is a pneumatic conveying system for unloading and moving materials to silos or to a production line, consisting of a frame on which a hopper with a boring device, an exhaust filter, an electric vibrator and a level indicator is installed; screw pneumatic conveying installation, compressor, electrical control and monitoring system, pipelines and jib crane.

The task of creating the claimed utility model is the implementation of unloading and moving by pneumotransporting the material in the optimal mode at a given level of material in the hopper. This is achieved by the fact that when this level is reduced due to a delay in feeding the material for unloading, the sensor of the material level indicator in the hopper is triggered, by the signal of which the screw drive motor is turned off, and the mixing chamber check valve blocks possible breakthroughs of compressed air from the mixing chamber towards the screw and into the bunker.

When increasing the level of material in the hopper by unloading new containers, the screw drive motor is automatically turned on and pneumatic conveying resumes.

The utility model is illustrated in the drawing, where Fig. 1 shows a diagram of a pneumatic conveying complex for unloading and moving bulk materials.

The essence of the design of the claimed utility model is a pneumatic transport system consisting of a frame 7 on which a hopper 3 is installed, equipped with a device 21 for cutting flexible containers "BIG-BAG". A suction fan 2 is attached to the bunker, connected to a flat 22 and bag filters 23, an electromechanical vibrator 18 and a material level gauge 17 in the hopper. The hopper is mounted on vibration mounts 4. A pressure pneumatic conveying unit 9 with a pressure screw 11 is mounted under the hopper, providing a continuous supply of unpackable bulk material for transportation. The screw is located in the housing 10, connected to the mixing chamber 13, and is driven by an electric motor 8. In the mixing chamber there is a check valve 12. A transport pipe 25 is connected to the mixing chamber, which goes to the silo tank 26. An air pipe 15 and a pressure regulator are connected to the mixing chamber compressed air 14. A safety grill 20 is installed in the upper part of the hopper, and a control and monitoring panel 19 is placed on the frame working platform. The hopper is connected to the pneumatic installation housing by a sector shutter rum 5 and elastic pipe 6.

The complex includes a compressor 16 with an air conditioning system and a stationary jib crane 1 with an electromechanical rotation of the console and a hoist with a lifting capacity of 2000 kg.

Pneumatic transport complex operates as follows.

The flexible container "BIG-BAG" 24 is fed by a crane 1 to the hopper 3 and released on the knives of the device 21. After cutting the container, the material through the safety grill 20 enters the hopper. Safety

the grill eliminates the ingress of lumps of material, the presence of which is possible in the container, into the housing of the pneumatic transport installation. When filling the hopper to the level of the location of the grill 20, the compressed air supply to the mixing chamber 13 is turned on, the screw drive electric motor 8 is turned on, and a sector shutter 5 is opened, through which material from the hopper enters the pump housing 10.

From the housing 10, the material is moved by the screw 11 through the check valve 12 into the mixing chamber 13. Compressed air entering the mixing chamber through the pipe 15 aerates the material and moves it through the pipe 25 to the silo tank 26.

When reducing the amount of material in the hopper to the level at which the level gauge 17 is installed, the auger drive motor 8 is turned off by the electric control system, the flow of material into the mixing chamber is stopped, and the check valve 12 is closed, thereby eliminating the possibility of compressed air breaking out of the mixing chamber through the screw into bunker 3 and violation of sanitary standards due to dust formation. Upon subsequent filling of the hopper with the material to the required level, the auger drive motor is switched on and pneumatic conveying is carried out.

The dusting that occurs during the emptying of the container 24 is eliminated by suction of dusty air by the fan 2 and its cleaning when passing through the flat filter 22 and bag filters 23. The dust deposited on the filter surfaces is shaken off from them when the vibrator 18 is turned on and poured into the hopper 3. Installing the hopper on vibration mounts eliminates the transmission of vibration to the frame and pneumatic installation.

Claims (5)

1. A pneumatic conveying system for unloading and moving bulk materials into silos or into a production line, consisting of a frame on which a hopper with an unloading device, an exhaust filter, an electric vibrator and a material level indicator, a screw pneumatic conveying system, a compressor, an electric control and control system is installed, pipelines, jib crane, characterized in that for moving the material in the optimal mode and ensuring compliance with sanitary standards in the event of a decrease in ovnya material in the hopper to a prescribed value is made automatic disconnection auger drive motor and the corresponding closing of the check valve precluding breakthroughs air from the mixing chamber into the hopper. 2. The complex according to claim 1, characterized in that to eliminate dusting that occurs during the emptying of containers, dusty air is sucked out by an exhaust fan mounted on the hopper, and is cleaned when passing through a flat and bag filters. 3. The complex according to claim 1, characterized in that the flat filter is installed in the hole made in the wall of the hopper through which the suction air enters the bag filters. 4. The complex according to claim 1, characterized in that the dust deposited on the surfaces of the filters is shaken off from them when the vibrator is turned on and poured into the hopper. 5. The complex according to claim 1, characterized in that the hopper is mounted on vibration mounts, which eliminates the transmission of vibration to the frame and pneumatic installation.