SU1523495A1 - Pneumatic device for feeding loose material - Google Patents

Abstract

This invention relates to pneumatic conveying. The aim of the invention is to improve the uniformity of the flow of bulk material. The device contains a reloading chamber 1 with a sleeve 29 and a hopper 2, a vibrator, blades 28 mounted on a shaft 31 with a drive 30, an air duct 36, a transport pipeline 23. The transporting gas enters the annular cavity 32, from which, whirling, enters the annular channel 37 in the reloading chamber 1, where he picks up the material coming from the hopper 2 and fed by the blades 28, and feeds it into the transport pipeline 23. 6 Il.

Description

(21) 4394380 / 40-11

(22) 03/21/88

(46) -23.11.89, Bn. No. 43

(72) V.I. Tyulupo and M.V. Tkacheva

(53) 621.867.8 (088.8)

(56) USSR Copyright Certificate No. 1237079, cl. B 65 G 53/66, 1982.

(54) DEVICE FOR PNBVMIC SUPPLY BULK MATERIAL

(57) The invention relates to pneumatic conveying. The aim of the invention is to increase the uniformity of the supply of syA-A

U.

bundle of material. The device contains a reloading chamber 1 with a sleeve. 29 and a hopper 2, a vibrator, blades 28 mounted on a shaft 31 with a drive 30, a gas pipeline 36, a transport pipeline 23. A transporter of gas enters an annular cavity 32, from where it swirls through an annular channel 37 into an overload chamber 1, where the material coming from the bunker 2 and fed by the vanes 28 is picked up and fed to the transport pipeline 23. 6 sludge.

i (L

The invention relates to pneumatic transport and can be used in various branches of the national economy: mechanical engineering, shipbuilding, the aviation industry, etc.

The aim of the invention is to improve the uniformity of the supply of powder material

FIG. 1 shows the proposed device, a general view; in fig. 2 shows section A-A in FIG. one; FIG. 3 is a section BB in FIG. 2; in fig. A - section-B-B in FIG. 2; in fig. 5 is a section of YYD in FIG. four; in fig. 6 — node I in FIG. one.

The device contains a reloading chamber 1 with a hopper 2 for powder material fixed in the upper part of chamber 1 by means of slot 3 In the immediate vicinity of the bunker an electrovibrator 4 is attached to the reloading chamber. Camera 1 is fixed above control console 5, on which devices 6 and 7 controls (a rotameter and a voltmeter, respectively), control elements 8-14 and indicators 15-17. A cover 20 made of a transparent material, such as Plexiglas, is fixed to the front of the housing 18 of the chamber 1 with a screw 19, from the inner side of which is cracked a funnel 21, which is a cylinder, from the side of which is a cylindrical surface filled with a deepening of the pirishdal shape.

The internal cavity of the funnel is connected by a powder-discharging orifice 22 to a transport pipe 23, sealed by means of a fitting 24 to the outside of the lid in its lower part so that the axes of the apertures of the choke and the powder-removing aperture coincide.

The seal on the plane of the connector between the lid and the body of the reloading chamber is provided with a rubber gasket 25. In the body of the camera 1, a cavity 26 is made cochlear, communicating with an opening 27 for supplying material to the internal cavity of the hopper 2, and a powder-removing opening of the funnel a rotor disk with scooping vanes is located in the chamber. At the back of the casing of the reloading chamber there is a case sleeve fixed with screws

29 with an axial bore, with the axis of the bore of the sleeve and the axis of the rotor disk coincide. A drive 30 with an output shaft 31 located in the axial opening of the housing sleeve is placed in the rear part of the housing sleeve so that it passes into the cavity of the reloading chamber, the blades 28 are fixed to the shaft end in this cavity so that the axis of the output shaft coincides with the axis rotation of the blades 28,

In the housing bushing, an annular cavity 32 is also filled with a hole 33 for the carrier gas such that the axis of the hole is tangent to the middle circumference 34 of the annular cavity. The aperture for the carrier gas extends to the outer surface of the housing sleeve. A fitting 35 is screwed into this hole along the thread, to which a gas line 36 is connected, which connects the annular cavity of the hub with a source of carrier gas.

The cylindrical surfaces of the axial bore of the body bushing and the output shaft of the electric drive form an annular channel 37, concentric axes of the bore and the annular cavity of the bushing and located between the cavity of the chamber 1 and the ring-shaped cavity 32 of the body bushing. This annular channel is located above the poroppodal opening in the cavity of the reload chamber, and the ratio of the cross section of the annular channel to the area of the inlet of the transport pipe is 1.0-1.5.

When the area ratio is less than 1.0, due to the high rate of outflow of the carrier gas into the chamber cavity, dust accumulates in the chamber, resulting in deterioration of the conditions for visual monitoring of the chamber operation. In addition, in the annular channel, the width of the gap in the radial direction becomes commensurate with the particle size of the powder material, as a result of which the conditions for jamming the output shaft in the annular channel and, as a result, uneven powder material supply can be created. When the area ratio is greater than 1.5, the speed of the transport of the transport gas into the chamber cavity decreases sharply, resulting in a decrease in the efficiency of removing particles of the powder material from the annular channel and, as a result, the particles of the powder material fall into the electric drive, which ultimately also leads to uneven feeding of the powder material,

The casing bushing of the reloading chamber is fixed in the bracket 38 with the possibility of turning the reloading chamber in a vertical plane to 18U and fixing it with the help of a stopper 39 in the extreme positions in which the longitudinal axis of the bunker coincides with the vertical. The pipe 23 is fixed to the burner nozzle section by means of a device containing a nozzle sleeve 40, a fitting 41, a tip 42 and a compression spring 43. The compression spring is located between the tip and the fitting, while the spring, the tip and the fitting are concentric to each other , and their longitudinal axes are the same.

The device works as follows.

Before starting, the device is connected to the power supply.

tip 42. Then the tip 42 of the pipe 23 is moved to the extreme left position by the action of the spring 43, in which the cone-shaped part of the nozzle 42 abuts the cone-shaped part of the radial orifice of the nozzle portion of the burner 44, thereby sealing the attachment point on the nozzle part of the burner 44.

The device is put into operation by pressing a button on the control panel 5, while transporting gas through the rotameter 6, the gas line 36, the fitting 35 and the opening 33 enters the annular cavity 32 of the housing bushing 29 of the chamber 1. The axis of the opening 33 is tangential To the average circumference 34 of the annular cavity 32 of the sleeve 29, the transporting gas in the annular cavity 32 of the sleeve 29 acquires a rotational motion and through the ring-shaped 5 different channel 37 enters the cavity of chamber 1 and then through the funnel 21 into the transport tunnel. pipe line 23,

When you press the button on the remote control of the blade 28 in the cavity

0

m, the hopper 2 with the powder attached to it - Q Ps 1 starts to rotate. When rotated to the chamber 1 and the chamber 1 together with the hopper 2 is transferred from the set-up position to the working position. For this, the stopper 39 of the bracket 38 is disengaged from the housing sleeve 29, after which the chamber 1, together with the hopper 2, rotates 180 in a vertical plane until it is fixed by the stopper 39, the required flow rate of the carrier gas is set, and the flow rate of the powder material is set to control panel using control elements and visually monitored by instruments - rotameter 6 and voltmeter 7),

Before starting work, the fixture of the pipeline 23 is fixed on the nozzle, part of the burner 44, for this

35

40

45

SRI blades 28 pick up the powder material in the cavity of the chamber 1 and pour into the funnel 21, where the particles of the powder material enter the pipeline 23,

As the powder material decreases from the cavity of chamber 1, the powder material spontaneously pours out of the inner cavity of the hopper 2 through the axial hole of the socket .3 and the inlet hole 27. In all cases, the level of the powder material in the cavity of the reloading chamber is kept constant and is located below the annular channel 37 extending into the cavity of chamber 1. This level of powder material is provided due to the fact that the annular channel 37 is located above

tip 42 to pipe 23 (the pre- "powder feed hole 27 in

pressing the spring) is transferred to the extreme right position, in which the cone-shaped part of the tip 42 is recessed into the nozzle sleeve 40. After this nozzle, the sleeve 40 until the abutment is put on the nozzle of the burner 44 so that the axis of the radial hole of the nozzle part of the burner 44 coincides with the axis the holes

55

cavity chamber 1,

When the button is pressed on the control panel, the electric vibrator 4 is also turned on. The mechanical vibrations generated by the electric vibrator 4 are transmitted to the housing 18, as a result of which the powder material from the hopper 2 is improved into the cavity of the chamber.

Q P s 1 begin to rotate. When rotated35

40

45

SRI blades 28 pick up the powder material in the cavity of the chamber 1 and pour into the funnel 21, where the particles of the powder material enter the pipeline 23,

As the powder material decreases from the cavity of chamber 1, the powder material spontaneously pours out of the inner cavity of the hopper 2 through the axial hole of the socket .3 and the inlet hole 27. In all cases, the level of the powder material in the cavity of the transfer chamber remains unchanged and is located below the annular channel 37, chamber 1 entering the cavity. This level of powder material is provided due to the fact that the annular channel 37 is located above

five

cavity chamber 1 ,,

When the button is pressed on the control panel, the electric vibrator 4 is also turned on. The mechanical vibrations generated by the electric vibrator 4 are transmitted to the housing 18, as a result of which the flowability condition of the powder material from the hopper 2 to the chamber cavity is improved.

  At the end of the work or in cases when it is necessary to replace the hopper 2 with powder. material of one chemical composition on the other, on the remote control 5. controls with the Stop button. Device operation is terminated. The transfer chamber 1 together with the hopper 2 is transferred from the working position to the set-up position, in which the bunker is fixed by the stopper 39 under the chamber, while the powder material from the cavity of the metering device is transferred to the hopper 2. Complete removal of the powder material from the cavity of the transfer chamber 1 into the hopper 2 is provided due to the fact that the transfer of the reloading chamber together with the bunker from the working position to the set-up one is carried out when the reloading chamber 1 is turned in the counterclockwise direction (viewed from the front the main side of the body of the reloading chamber).

Claims (1)

Invention Formula . A device for pneumatic feeding of bulk material, containing a reloading chamber with a hole for basement five ten 15 20 25 Yes, a material and a sleeve connected to it, fitted with an axial bore and connected to the transport gas supply pipeline, a transport pipeline connected to the chamber in its lower part, a bunker and a vibrator fixed to the chamber, characterized in that, in order to improve the uniformity of the material supply, it is provided with blades placed in the chamber coaxially With the sleeve above the material inlet, mounted on a drive shaft located in the axial hole of the sleeve with the formation of an annular channel, the ratio of the area The cross section of which to the inlet area of the transport pipeline is 1.0-1.5, while the sleeve is installed rotatably on its longitudinal axis and is made with an annular cavity, axial with the shaft from its drive side and communicated with said annular channel, and the carrier gas supply pipeline is installed with an orientation tangential to the middle circumference of the annular cavity. Fiel FIG. YY 77 Fi9.5 femJ g f - t w t w v3tm, A 15 V 4r / (g5