CN203413658U

CN203413658U - Feeding machine

Info

Publication number: CN203413658U
Application number: CN201320447656.9U
Authority: CN
Inventors: 高伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-25
Filing date: 2013-07-25
Publication date: 2014-01-29
Anticipated expiration: 2023-07-25

Abstract

The utility model relates to the electromechanical field, in particular to a feeding machine. The feeding machine comprises a feeding pipe, wherein a variable-pitch conveying screw is arranged inside the feeding pipe, and the screw pitch of the variable-pitch conveying screw is gradually reduced from the end A to the end B; a feeding hole is formed at one end of a feeding pipe wall and the feeding hole is positioned above the end A of the variable-pitch conveying screw; a plug-in Venturi tube is arranged at the other end of the feeding pipe and is positioned above the end B of the variable-pitch conveying screw. The quantity of the material in the feeding pipe is increased when the feeding machine is used, and the problems of air returning and zero drifting of a rotor scale are solved.

Description

Feeding machine

Technical field

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

Background technology

In rotary kiln is fed coal metering system, often occur that metering system inside returns wind and coal dust to charging aperture and reflux and cause the problems such as null offset of rotor weigher instrument.Relevant settling mode is: utilize spiral coal supply pump (as Fig. 1, shown in) realize and lock wind batch mixing, inclined-plane 203 and counterweight pressing plate 202 are set in coal chute 201, with hexapolar electrode, run up and make material enter blending bunker 205, then utilize Venturi tube 204 principles that material is transported away by high-pressure blast.This structure or existent defect, the coal consumption of rotary kiln is significantly smaller than the conveying capacity of coal pump, thereby the coal in coal chute 201 seldom, there is larger 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 weigher of charging aperture from the space, top of coal chute 201, still causes the null offset of rotor weigher, and coal dust also can be return from space.

Utility model content

The purpose of this utility model is to provide a kind of feeding machine, to solve the above problems.

The feeding machine that the utility model embodiment provides comprises: feed pipe, the inside of described feed pipe is provided with 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, the top of the A end of described charging aperture in described displacement conveyor screw; The other end of described feed pipe is provided with plug-type Venturi tube, the top of the B end of described Venturi tube in described displacement conveyor screw.

The feeding machine that the utility model embodiment provides when in use, material is after charging aperture enters, material is fed forward in feed pipe by displacement conveyor screw, due to 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 B end from A end, the space of storeroom can be more and more less, 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 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 be weakened, the wind that is blown into Venturi tube can suck in Venturi tube by the material at B end place and by the material outlet of Venturi tube, mass transport be gone out, complete conveying.And once there is no space in feed pipe, material cannot backflow by space; On the other hand, the wind passing in 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 weigher instrument.

Accompanying drawing explanation

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

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

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

The specific embodiment

Below by specific embodiment, also by reference to the accompanying drawings the utility model is described in further detail.

, comprising: feed pipe, the inside of described feed pipe is provided with 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, the top of the A end of described charging aperture in 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, the top of the B end of described Venturi tube in described displacement conveyor screw.

Material is after charging aperture enters, material is fed forward in feed pipe by displacement conveyor screw, due to 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 B end from A end, the space of storeroom can be more and more less, 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 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 be weakened, the wind that is blown into Venturi tube can suck in Venturi tube by the material at B end place and by the material outlet of Venturi tube, mass transport be gone out, complete conveying.And once there is no space in feed pipe, material cannot backflow by space; On the other hand, the wind passing in 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 weigher instrument.

Next, by some specific embodiments, describe this feeding machine in detail, 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, the top of charging aperture in displacement conveyor screw 104, the material entering from charging aperture can directly be deposited in the top of displacement conveyor screw 104, by displacement conveyor screw 104, be fed forward, and material can be because the consolidation that pitch becomes from large to small and gradually, the material of carrying in displacement conveyor screw 104 increases, be full of gradually whole feed pipe 101, 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, the top of the B end 111 in displacement conveyor screw 104, because feed pipe 101 is full of material, the wind of carrying to Venturi tube 108 can not pass from feed pipe 101 (can not produce and return wind phenomenon), utilize the principle of Venturi tube (in Venturi tube, when obstacle is crossed in wind, near port above the lee face of obstacle, air pressure is relatively low, thereby produces suction-operated and cause flowing of air.The principle of Venturi tube is in fact very simple, and it is exactly air-flow from the coarse to fine, to accelerate gas flow rate, makes gas form " vacuum " district at the rear side of venturi outlet), the larger negative pressure forming in the leeward district of Venturi tube 108.

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

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

In certain embodiments, for aforesaid way one, displacement conveyor screw 104 can adopt 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, for 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 feed pipe 101 in full material state.

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

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

This feeding machine also comprises pays airduct 105, and one end of this pair of airduct 105 is connected with the discharge port end of Venturi tube 108, and the other end is connected with air inlet 102 ends of Venturi tube 108.On pair airduct 105, be provided with the second by-pass valve control 107.The second by-pass valve control 107 and the first by-pass valve control 103 compounding practices, when material during lower than blanking the first by-pass valve control 103 close, the second by-pass valve control 107 is opened simultaneously.High-pressure blast has been walked a pair pipeline like this, guarantees without return phenomenon.After having processed scarce material phenomenon, the first by-pass valve control 103 is opened, and the second by-pass valve control 107 is closed simultaneously, starts normal convey materials.

Material is after charging aperture enters, material is fed forward in feed pipe by displacement conveyor screw, due to 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 less, 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 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 be weakened, the wind that is blown into Venturi tube can hold B the material at 111 place's blending bunker 112 places suck in Venturi tube and by the material outlet of Venturi tube, mass transport gone out, complete metering.And once there is no space in feed pipe, material cannot backflow by space; On the other hand, the wind passing in 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 weigher instrument.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a feeding machine, is characterized in that, comprising: feed pipe, the inside of described feed pipe is provided with 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, the top of the A end of described charging aperture in described displacement conveyor screw; The other end of described feed pipe is provided with plug-type Venturi tube, the top of the B end of described Venturi tube in 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 spiral wind line.

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

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

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

8. according to the feeding machine described in claim 1-5 any one, it is characterized in that, also comprise and pay airduct, one end of described pair of airduct is connected with the discharge port end of described Venturi tube; The other end is connected 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 the second by-pass valve control.

10. according to the feeding machine described in claim 1-5 any one, 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.