CN103343975A

CN103343975A - Feeding machine

Info

Publication number: CN103343975A
Application number: CN2013103165213A
Authority: CN
Inventors: 高伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-25
Filing date: 2013-07-25
Publication date: 2013-10-09
Anticipated expiration: 2033-07-25
Also published as: CN103343975B

Abstract

The invention relates to the field of electromechanics, in particular to a feeding machine. The feeding machine comprises a feeding pipe, a variable pitch conveying helix is arranged inside the feeding pipe, and the screw pitch of the variable pitch conveying helix gradually decreases from the A end to the B end of the variable pitch conveying helix. A feed port is formed in one end of the pipe wall of the feeding pipe, and the feed port is placed above the A end of the variable pitch conveying helix. The other end of the feeding pipe is provided with a plug-in type Venturi tube, and the Venturi tube is placed above the B end of the variable pitch conveying helix. When the feeding machine is used, the quantity of materials in a conveying pipe is added, and the problems of wind return and zero drift of a rotor scale instrument are solved.

Description

Feeding machine

Technical field

The present invention relates to dynamo-electric field, in particular to a kind of feeding machine.

Background technology

In rotary kiln is fed the coal metering system, metering system inside often occurs and return wind and coal dust to charging aperture and reflux and cause the problems such as null offset of rotor scale instrument.Relevant settling mode is: utilize spiral coal supply pump (as Fig. 1, shown in) realization lock wind batch mixing, inclined-plane 203 and counterweight pressing plate 202 are set in the coal chute 201, and running up with hexapolar electrode makes material enter blending bunker 205, utilizes Venturi tube 204 principles that material is transported away by high-pressure blast then.Still there is shortcoming in this structure, the coal consumption of rotary kiln is significantly smaller than the conveying capacity of coal pump, thereby the coal in the coal chute 201 seldom, there is big space in the top that is provided with the coal chute 201 of conveyor screw, thereby can not form negative pressuren zone, the wind of sending into Venturi tube can return in the rotor scale of charging aperture from the space, top of coal chute 201, still causes the null offset of rotor scale, and coal dust also can be return from the space.

Summary of the invention

The object of the present invention is to provide a kind of feeding machine, to solve the above problems.

The feeding machine that the embodiment of the invention provides comprises: feed pipe, the inside of described feed pipe is provided with the displacement conveyor screw, described displacement conveyor screw from A hold to the pitch of B end from large to small; One end of the tube wall of described feed pipe is provided with charging aperture, and described charging aperture is in the top of the A end of described displacement conveyor screw; The other end of described feed pipe is provided with plug-type Venturi tube, and described Venturi tube is in the top of the B end of described displacement conveyor screw.

The feeding machine that the embodiment of the invention provides when in use, material is after charging aperture enters, material is fed forward in feed pipe by the displacement conveyor screw, since the displacement conveyor screw from A hold to the pitch of B end from large to small, therefore, material is in the process of carrying to the B end from the A end, the space of storeroom can be more and more littler, the degree of packing of material increases, material in feed pipe by progressively compacting, presenting stacking states is fed forward, thereby increased the amount of material in the carrier pipe, the amount of material can be filled up whole feed pipe after increasing, the negative pressure that the leeward district of Venturi tube produces can not slackened, and the wind that is blown into Venturi tube can suck the material at B end place in the Venturi tube and by the material outlet of Venturi tube goes out mass transport, finishes conveying.And in case there has not been the space in the feed pipe, material then can't backflow by the space; On the other hand, the wind that feeds in the Venturi tube can not pass from the space of feed pipe more yet, thereby, solved the problem of the null offset of returning wind and rotor scale instrument.

Description of drawings

Fig. 1 shows the front view of traditional feeding machine;

Fig. 2 shows the front view of feeding machine among the embodiment;

Fig. 3 shows the cutaway view of A-A direction among Fig. 1.

The specific embodiment

Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.

A kind of feeding machine comprises: feed pipe, the inside of described feed pipe is provided with the displacement conveyor screw, described displacement conveyor screw from A hold to the pitch of B end from large to small; One end of the tube wall of described feed pipe is provided with charging aperture, and described charging aperture is in the top of the A end of described displacement conveyor screw; The other end of described feed pipe is provided with plug-type Venturi tube, and bearing of trend and the feed pipe of Venturi tube are perpendicular, and described Venturi tube is in the top of the B end of described displacement conveyor screw.

Material is after charging aperture enters, material is fed forward in feed pipe by the displacement conveyor screw, since the displacement conveyor screw from A hold to the pitch of B end from large to small, therefore, material is in the process of carrying to the B end from the A end, the space of storeroom can be more and more littler, the degree of packing of material increases, material in feed pipe by progressively compacting, presenting stacking states is fed forward, thereby increased the amount of material in the carrier pipe, the amount of material can be filled up whole feed pipe after increasing, the negative pressure that the leeward district of Venturi tube produces can not slackened, the wind that is blown into Venturi tube can suck the material at B end place in the Venturi tube and by the material outlet of Venturi tube goes out mass transport, finishes conveying.And in case there has not been the space in the feed pipe, material then can't backflow by the space; On the other hand, the wind that feeds in the Venturi tube can not pass from the space of feed pipe more yet, thereby, solved the problem of the null offset of returning wind and rotor scale instrument.

Next, describe this feeding machine in detail by some specific embodiments, as Fig. 2, shown in 3:

A kind of feeding machine, comprise: feed pipe 101, one end of the tube wall of feed pipe 101 is provided with charging aperture, the inside of this feed pipe 101 is provided with displacement conveyor screw 104, this displacement conveyor screw 104 from the pitch of A end 110 to B ends 111 from large to small, charging aperture is in the top of displacement conveyor screw 104, the material that enters from charging aperture can directly be deposited in the top of displacement conveyor screw 104, be fed forward by displacement conveyor screw 104, and the consolidation that the material meeting becomes from large to small and gradually because of pitch, the material of carrying in the displacement conveyor screw 104 increases, and is full of whole feed pipe 101 gradually, in the blending bunker 112 of B end 111, the consolidation of material; Plug-type Venturi tube 108 is arranged at the other end of feed pipe 101, be in the top of the B end 111 of displacement conveyor screw 104, because feed pipe 101 is full of material, the wind of carrying to Venturi tube 108 can not pass (namely can not produce and return the wind phenomenon) from feed pipe 101, utilize the principle of Venturi tube (in the Venturi tube, when obstacle was crossed in wind, air pressure was relatively low near port above the lee face of obstacle, thereby produced suction-operated and cause flowing of air.The principle of Venturi tube is very simple in fact, and it is exactly air-flow from the coarse to fine, to accelerate gas flow rate, makes gas form one " vacuum " district at the rear side of venturi outlet), the big negative pressure that forms in Venturi tube 108 leeward districts.

In order to strengthen the mixed effect of material in the feed pipe 101, can the spiral wind line be set in the inside at the undergauge place of Venturi tube 108, make the high-pressure blast rotation, thereby increasing compounding effect, (this is the high-pressure blast blower fan to the air inlet 102 of Venturi tube 108 by pipeline and blower fan, be commonly referred to roots blower) be connected, the high-pressure rotary wind is come in and gone out in the Venturi tube 108, because negative pressure, high-pressure blast can suck the displacement conveyor screw 104 of material from B end 111 in the Venturi tube 108, and the discharging opening by Venturi tube 108 discharges, and finishes feeding.

For the full state of the material in the better control feed pipe 101, can following adjustment mode: mode one, adjust the rotary speed of displacement conveyor screw 104; Mode two, the charging rate of passing through to adjust;

In certain embodiments, at aforesaid way one, displacement conveyor screw 104 can adopt the rotary power driven unit to drive, this rotary power driven unit has comprised the engine of being furnished with frequency control, by the output frequency of frequency control engine, can drive the rotary speed of parameter conveyor screw.

In certain embodiments, at aforesaid way two, charging aperture place at feed pipe 101 is provided with feed pipe 109, this feed pipe 109 is provided with plural level-sensing device 106, by adjusting the level-sensing device 106 of correspondence position, can adjust the speed of the pan feeding of different materials amounts, realize that feed pipe 101 is in full material state.

In order accurately material to be sucked Venturi tube 108 from displacement conveyor screw 104, therefore, in certain embodiments, the material inlet of Venturi tube 108 is in the top of the B end 111 of displacement conveyor screw 104, guarantee to form negative pressuren zone, the material of consolidation the most can be sucked in the Venturi tube 108, accelerate the conveying of material.

High-pressure blast can be controlled the flow velocity of high-pressure blast when coming in and going out Venturi tube 108, and the mode of control can adopt the high-pressure blast row speed of the air outlet of control roots blower.Air inlet 102 and the connecting pipe between the blower fan in Venturi tube 108 arrange first by-pass valve control 103.

This feeding machine also comprises pays airduct 105, and an end of this pair airduct 105 links to each other with the discharge port end of Venturi tube 108, and the other end links to each other with air inlet 102 ends of Venturi tube 108.Be provided with second by-pass valve control 107 at a pair airduct 105.Second by-pass valve control 107 and first by-pass valve control, 103 compounding practices, first by-pass valve control 103 is closed when material is lower than blanking, and second by-pass valve control 107 is opened simultaneously.High-pressure blast has been walked a pair pipeline like this, guarantees not have return phenomenon.After having handled scarce material phenomenon, first by-pass valve control 103 is opened, and second by-pass valve control 107 is closed simultaneously, begins normal convey materials.

Material is after charging aperture enters, material is fed forward in feed pipe by the displacement conveyor screw, because the displacement conveyor screw from the diameter of A end 110 to B ends 111 and pitch from large to small, therefore, material is in the process of carrying to B end 111 from A end 110, the space of storeroom can be more and more littler, the degree of packing of material increases, material in feed pipe by progressively compacting, presenting stacking states is fed forward, thereby increased the amount of material in the carrier pipe, the amount of material can be filled up whole feed pipe after increasing, the negative pressure that the leeward district of Venturi tube produces can not slackened, the wind that is blown into Venturi tube can be held B the material at 111 place's blending bunkers, 112 places to suck in the Venturi tube and by the material outlet of Venturi tube mass transport is gone out, and finishes metering.And in case there has not been the space in the feed pipe, material then can't backflow by the space; On the other hand, the wind that feeds in the Venturi tube can not pass from the space of feed pipe more yet, thereby, solved the problem of the null offset of returning wind and rotor scale instrument.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a feeding machine is characterized in that, comprising: feed pipe, the inside of described feed pipe is provided with the displacement conveyor screw, described displacement conveyor screw from A hold to the pitch of B end from large to small; One end of the tube wall of described feed pipe is provided with charging aperture, and described charging aperture is in the top of the A end of described displacement conveyor screw; The other end of described feed pipe is provided with plug-type Venturi tube, and described Venturi tube is in the top of the B end of described displacement conveyor screw.

2. feeding machine according to claim 1 is characterized in that, the inwall at the undergauge place of described Venturi tube is provided with the spiral wind line.

3. feeding machine according to claim 1 is characterized in that, also comprises the rotary power driven unit, to drive described displacement conveyor screw rotation;

Described rotary power driven unit comprises: the engine of being furnished with frequency control.

4. feeding machine according to claim 1 is characterized in that, described charging aperture place is provided with feed pipe, and described feed pipe is provided with plural level-sensing device.

5. feeding machine according to claim 1 is characterized in that, the material inlet of described Venturi tube is in the top of the B end of described displacement conveyor screw.

6. according to each described feeding machine of claim 1-5, it is characterized in that the air inlet of described Venturi tube connects blower fan by pipeline.

7. feeding machine according to claim 6 is characterized in that, described pipeline is provided with first by-pass valve control.

8. according to each described feeding machine of claim 1-5, it is characterized in that also comprise and pay airduct, an end of described pair of airduct links to each other with the discharge port end of described Venturi tube; The other end links to each other with the air inlet end of described Venturi tube.

9. feeding machine according to claim 8 is characterized in that, described pair of airduct is provided with second by-pass valve control.

10. according to each described feeding machine of claim 1-5, it is characterized in that the bearing of trend of described Venturi tube and described feed pipe are perpendicular; Axially being parallel to each other of described displacement conveyor screw and described feed pipe.