SU975546A1 - Multiway switch for pneumatic transport units - Google Patents

Description

The invention relates to the field of pneumatic conveying of bulk materials, specifically to a multi-position switch for pneumatic conveying installations, and can be used in various industries of the national economy, for example in mechanical engineering, metallurgy, energy, chemical industry and agriculture.

A device is known for distributing goods to receiving places, comprising a flexible vertically closed traction element, which passes under roller plots installed at pick-up points, equipped with load cutters and copiers mounted in front of roller platforms, the rollers of which are made non-driven, while being vertically flexible The closed traction element has freely rotating rollers, which is in contact with copiers 1.

The disadvantage of this device owl gats-low reliability due to the large number of parts, the complexity of the transmission mechanisms, the presence of a special drive and limited technological capabilities.

A multi-position switch for pneumatic conveying installations is known, comprising a housing with discharge and supply connections and a rotating body mounted inside it for conveying the material to be transported 23.

The disadvantages of the known switch are the complexity of the design due to the presence of several actuating mechanisms, which complicates the operation and reduces the reliability of the device and the difficulty of complete sealing when connecting the discharge nozzles.

The purpose of the invention is to improve the operating conditions.

This goal is achieved by the fact that in the multi-position switch for pneumatic conveying installations the rotary body is made in the form of a freely measured ball in the body, on the surface of which there are cells, and the body is equipped with nozzles for supplying compressed air to its cavity.

FIG. 1 shows a multi-position switch; general view} in FIG. 2 shows a section A-A in FIG.

Claims (2)

The multi-position switch of pneumatic conveying installations comprises a hollow body 1 connected to inlet 2 and outlet 3 nozzles, inside of which there is a rotary member made in the form of a ball 4 freely placed inside the body 1 with loading cells 5 on its surface. On the housing 1 there are nozzles b for supplying compressed air into the gap between the ball 4 and the housing 1. The device operates as follows. In the housing 1 there is a freely placed ball 4, which is in a suspended state due to the supply of compressed air into the cavity of the housing through the pipes b. When the material enters from the nozzle 2, the ball 4 begins to rotate due to the energy of the transported material and the compressed air supplied through the feed nozzle, and the loading cells 5 are filled with the transported material. Tubes 3 are rigidly attached to housing 1, into which material from loading cells 5 is supplied for further transportation. To keep the ball 4 in a suspended state inside the housing 1, compressed air must be supplied through nozzles b located in housing 1. During normal operation The ball 4 does not touch the walls of the housing 1 when the enemy is in contact, and a gap is formed between the walls and the ball 4 due to the pressure of compressed air coming through the pipe b. The annual economic effect from using the proposed device when transporting onentov molding mixtures is 30 rubles. on 1 t to pour. The multi-shift switch has the following technical advantages: simplicity of design due to the absence of mechanical gears: f flow switching is carried out with one piece of a ball with loading cells and the absence of special mechanical gear and mechanical gears for rotating the ball with loading cells; ease of maintenance, which is the correct setup of the device before operating and enabling and disabling the suction and discharge connections; high reliability; the possibility of complete sealing due to the stationary connection of the receiving and discharging pipes; the ability to switch the traffic flow in any direction (directions), including in the opposite direction; comparative ease of full automation. An important feature of the flow switch is the ability to feed the material in portions, the size of which depends on the size of the loading cells, and also that the switch allows you to change the direction of transport in either direction, simultaneously in one or several directions and from several directions to one or several, i.e. is universal. Increasing the pressure and flow rate along the length of the pipeline by additionally supplying compressed air through the nozzles in the housing solves the problem of reducing pressure loss while overcoming harmful resistances (knees, etc.) and allows replacing an expensive compressor and pneumatic pump with conventional fans. Claims of the invention A multi-position switch for pneumatic conveying installations, comprising a housing with discharge and inlet connections, and a rotating body mounted inside it for conveying the material to be transported, distinguished with. so that, in order to improve the operating conditions, the rotary body is made in the form of a ball freely placed in the body / on the surface of which cells are made, and the body is equipped with nozzles for supplying compressed air into its cavity. Sources of information taken into account during the examination 1. USSR certificate number 766988, cl. B65 G 53 / 5b, 02.09.80. 2. Authorship certificate of the USSR 650904, cl. B65 G 53/56, 1976 (prbtotip). Aa