CN208312425U - A kind of coal pulverizer capacity air door adjusting structure - Google Patents

Abstract

The utility model provides a kind of coal pulverizer capacity air door adjusting structure, intracorporal first wind deflector of shell is mounted on including shell and by shaft, second wind deflector, third wind deflector and fourth gear aerofoil, the shaft of first wind deflector and the shaft of the second wind deflector pass through articulated linkage and connect with the shaft of third wind deflector, the shaft of fourth gear aerofoil is connect by articulated linkage with the shaft of the second wind deflector, the first partition beam slab is equipped between wind deflector and shell, the second partition beam slab is equipped between each wind deflector, the two sides of the width direction of each wind deflector are equipped with weather strip, first partition beam slab and the second partition beam slab can carry out the limit block along wind deflector rotation direction to weather strip, it is just in contact with the first partition beam slab and the second partition beam slab compared to existing each wind deflector, the initial stage that can be opened in capacity air door, pass through gear Wind item increases the block to inlet air, to reduce the mutation of air quantity, improves the linearity that capacity air door is adjusted.

Description

A kind of coal pulverizer capacity air door adjusting structure

Technical field

The utility model relates to pulverized coal preparation and processing equipment fields, and in particular to a kind of coal pulverizer capacity air door adjusting knot Structure.

Background technique

Existing large coal-fired power plant mostly uses the pulverized coal preparation system being made of double inlet and outlet coal mill, as shown in fig. 1, by certainly The raw coal that the feeder 1 of dynamic control supplies is sent into the mixed coal case 2 of coal pulverizer through feed pipe, after bypass wind 3 carries out predrying, 4 upper entrance of auger conveyor is fallen on by coal spout, what the rotary motion by helix transporting device was rotating coal feeding In cylinder 5, coal pulverizer drives cylinder 5 to rotate by main motor through Gear Transmission in Reducer, is provided with a certain amount of grinding medium in cylinder 5 Matter-steel ball.Steel ball is promoted to certain altitude by the rotary motion of cylinder 5, steel ball freely rush down fall and leave during it is right Coal is hit and is rubbed, until by coal grinding at coal dust.

Heat primary air 6 is divided into two-way before entering coal pulverizer, wherein being known as bypass wind 3 all the way, is adjusted by bypass wind Baffle door enters in mixed coal case 2, mixes in mixed coal case 2 with raw coal and carries out predrying to coal, is positively retained in pulverized coal channel and gathers around There is the wind speed of enough pulverized coal conveyings, be in addition known as capacity wind 7 all the way, is entered in cylinder 5 by capacity air door 8, play conveying And the effect of the coal dust in dry cylinder 5.The annular between central tube and hollow tube that wind powder mixture passes through auger conveyor 4 Channel is carried over coal pulverizer.Qualified coal dust is delivered to burner by discharge and powder feeding pipes after the separation of separator 9, so It burns in spirt boiler afterwards.

The capacity air door 8 of existing coal pulverizer, wind deflector closure is tighter when closing, but by closing to the initial of unlatching Stage, the gap between wind deflector increase suddenly, and the powder outlet quantity of coal pulverizer also increases suddenly therewith, the adjusting of capacity air door entirety The linearity is poor, causes pulverized coal preparation system disturbance larger, automatic burner control system can not normally be put into.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of preferable coal pulverizer capacity air doors of tuning linearity Adjustment structure.

To achieve the above object, the technical solution that the utility model is taken are as follows: a kind of coal pulverizer capacity air door adjusting structure, Intracorporal first wind deflector of shell, the second wind deflector, third wind deflector and fourth gear wind are mounted on including shell and by shaft The shaft of plate, the shaft of the first wind deflector and the second wind deflector passes through articulated linkage and connect with the shaft of third wind deflector, the The shaft of four wind deflectors is connect by articulated linkage with the shaft of the second wind deflector, and the first partition is equipped between wind deflector and shell Beam slab, is equipped with the second partition beam slab between each wind deflector, and the two sides of the width direction of each wind deflector are equipped with weather strip, and first Partition beam slab and the second partition beam slab can carry out the limit block along wind deflector rotation direction, the first partition beam to weather strip Plate, the second partition beam slab and each wind deflector will be divided into air-inlet cavity and air draft chamber in shell.

Half of the width of weather strip no more than the width of the second partition beam slab.

Weather strip is equipped with limit fin, and the first partition beam slab and the second partition beam slab are equipped with compatible limiting slot, Weather strip and the first partition beam slab, weather strip and the second partition equal fasten and coordinate of beam slab.

The length direction that fin is limited along weather strip is extended, and limiting slot is along the first partition beam slab and the second partition beam slab Length direction be extended.

Limit fin has multiple and along weather strip width direction uniform intervals arrangements, limiting slot have it is multiple and along first every The width direction uniform intervals arrangement of disconnected beam slab and the second partition beam slab.

Weather strip, which is equipped with, fastens fin, and wind deflector is equipped with compatible catching groove, and weather strip fastening is mounted on wind deflector Two sides on.

Weather strip is equipped with for detecting between wind deflector and the first partition beam slab or wind deflector and the second partition beam slab The displacement sensor of aperture.

Weather strip uses abrasion-proof stainless steel material.

The coal pulverizer capacity air door adjusting structure of the utility model, including shell and to be mounted on shell by shaft intracorporal First wind deflector, the second wind deflector, third wind deflector and fourth gear aerofoil, the shaft of the first wind deflector and the second wind deflector turn Axis passes through articulated linkage and connect with the shaft of third wind deflector, and the shaft of fourth gear aerofoil is kept out the wind by articulated linkage with second The shaft of plate connects, and the first partition beam slab is equipped between wind deflector and shell, the second partition beam slab is equipped between each wind deflector, respectively The two sides of the width direction of wind deflector are equipped with weather strip, the first partition beam slab and the second partition beam slab can to weather strip into Row just separates beam slab with the first partition beam slab and second compared to existing each wind deflector along the limit block of wind deflector rotation direction It is in contact, the initial stage that can be opened in capacity air door increases the block to inlet air by weather strip, reduces wind deflector and opens just Effective flow area of phase improves the linearity that capacity air door is adjusted to reduce the mutation of air quantity.

Detailed description of the invention

Fig. 1 is the usage state diagram of specific embodiment of the utility model one；

Fig. 2 is the structural schematic diagram of specific embodiment of the utility model one；

Fig. 3 is the left view of Fig. 2；

Fig. 4 is the top view of Fig. 2；

Fig. 5 is the A-A direction view of Fig. 2；

Fig. 6 is the structural schematic diagram of the first wind deflector 11 in Fig. 5.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

The specific embodiment one of the coal pulverizer capacity air door adjusting structure of the utility model, as shown in Fig. 1 to Fig. 6, packet It includes shell 10 and intracorporal first wind deflector 11 of shell, the second wind deflector 12, third wind deflector 13 and is mounted on by shaft The shaft of four wind deflectors 14, the shaft of the first wind deflector 11 and the second wind deflector 12 passes through articulated linkage and third wind deflector 13 Shaft connection, the shaft of fourth gear aerofoil 14 connect by articulated linkage with the shaft of the second wind deflector 12, wind deflector and shell It is equipped with the first partition beam slab 15 between body, the second partition beam slab 16 is equipped between each wind deflector, the width direction of each wind deflector Two sides are equipped with weather strip 17, and the first partition beam slab 15 and the second partition beam slab 16 can carry out along wind deflector weather strip 17 The limit block of rotation direction, the first partition beam slab 15, second, which separates beam slab 16 and each wind deflector, to be divided into shell 10 Air-inlet cavity and air draft chamber.

As shown in Figure 4, in use, the shaft of power device driving third wind deflector 13 rotates clockwise, third is kept out the wind The shaft of plate 13 is connect by articulated linkage with the shaft of the first wind deflector 11 and the second wind deflector 12, to drive first to keep out the wind The shaft of plate 11 and the second wind deflector 12 rotates clockwise, and the shaft of the second wind deflector 12 passes through articulated linkage and fourth gear wind The shaft of plate 14 connects, so that the shaft of fourth gear aerofoil 14 be driven to rotate clockwise, and then realizes the first wind deflector 11, the The linkage of two wind deflectors 12, third wind deflector 13 and fourth gear aerofoil 14.

Preferably, weather strip 17 is equipped with limit fin, and the first partition beam slab 15 and the second partition beam slab 16 are equipped with phase The limiting slot of adaptation, weather strip 17 and the first partition beam slab 15, weather strip 17 and the second partition equal fasten and coordinate of beam slab 16, then hold When measuring air door closing, more good sealing can be realized by the fasten and coordinate of limit fin and limiting slot, gas be avoided to leak, The powder outlet quantity of mill coal pulverizer is influenced, certainly, in other embodiments, weather strip 17 only can separate beam slab 15 and second with first Separate beam slab 16 and compresses block.

Preferably, limit fin is extended along the length direction of weather strip 17, and limiting slot is along the first partition 15 He of beam slab The length direction of second partition beam slab 16 is extended, and limit fin has width direction uniform intervals multiple and along weather strip 17 Arrangement, limiting slot have width direction uniform intervals arrangement multiple and along the first partition beam slab 15 and the second partition beam slab 16, can Increase the stability of fastening structure.

Preferably, weather strip 17, which is equipped with, fastens fin, and wind deflector is equipped with compatible catching groove, and weather strip 17 fastens peace On the two sides of wind deflector, by the way of removable installation, it can be replaced after weather strip 17 is used for a long time and wears, separately Outside, can also mating different width dimensions weather strip 17 so as to changed with realize capacity air door air quantity adjust the linearity Improvement, certainly, in other embodiments, weather strip 17 can be integrally formed with wind deflector, then the structure of wind deflector is more stable.

Preferably, weather strip 17 uses abrasion-proof stainless steel material, it is ensured that good intensity and wearability are avoided in air door The repeatedly contact wear between the first partition beam slab 15 and the second partition beam slab 16 when folding, certainly, in other embodiments, gear The other materials such as rubber can be used in wind item 17, using rubber material, when can reduce air door closure with the first partition beam slab 15 and the The collisions of two partition beam slabs 16 scrape, meanwhile, it can also enhance weather strip 17 by compressing to shrink and separate beam slab 15 and the with first The limit block effect of two partition beam slabs 16, guarantees the sealing performance of air door.

Preferably, half of the width of weather strip 17 no more than the width of the second partition beam slab 16, it is ensured that weather strip 17 With the limit block effect of the first partition beam slab 15 and the second partition beam slab 16.

The specific embodiment two of the coal pulverizer capacity air door adjusting structure of the utility model, and the difference of embodiment one exist In weather strip 17 is equipped with for detecting between wind deflector and the first partition beam slab 15 or wind deflector and the second partition beam slab 16 The displacement sensor of aperture, by displacement sensor can the opening information to capacity air door effectively monitored, to be adjusted The analysis of whole and data.

Finally, it is stated that: above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, this field Other modifications or equivalent replacement that those of ordinary skill makes the technical solution of the utility model, it is practical without departing from this The spirit and scope of new technique scheme should all cover in the scope of the claims of the utility model.

Claims (8)

1. a kind of coal pulverizer capacity air door adjusting structure, which is characterized in that be mounted in shell including shell and by shaft The first wind deflector, the second wind deflector, third wind deflector and fourth gear aerofoil, the shaft of the first wind deflector and the second wind deflector Shaft passes through articulated linkage and connect with the shaft of third wind deflector, and the shaft of fourth gear aerofoil passes through articulated linkage and second gear The shaft of aerofoil connects, and the first partition beam slab is equipped between wind deflector and shell, the second partition beam slab is equipped between each wind deflector, The two sides of the width direction of each wind deflector are equipped with weather strip, and the first partition beam slab and the second partition beam slab can be to weather strips The limit block along wind deflector rotation direction is carried out, the first partition beam slab, the second partition beam slab and each wind deflector will be in shells It is divided into air-inlet cavity and air draft chamber.

2. coal pulverizer capacity air door adjusting structure according to claim 1, which is characterized in that the width of weather strip is not more than The half of the width of second partition beam slab.

3. coal pulverizer capacity air door adjusting structure according to claim 1, which is characterized in that weather strip is equipped with limit convex Rib, the first partition beam slab and the second partition beam slab are equipped with compatible limiting slot, weather strip and the first partition beam slab, weather strip With the second partition equal fasten and coordinate of beam slab.

4. coal pulverizer capacity air door adjusting structure according to claim 3, which is characterized in that limit fin is along weather strip Length direction is extended, and limiting slot is extended along the length direction of the first partition beam slab and the second partition beam slab.

5. coal pulverizer capacity air door adjusting structure according to claim 4, which is characterized in that limit fin has multiple and edge The width direction uniform intervals of weather strip arrange that limiting slot has width multiple and along the first partition beam slab and the second partition beam slab Direction uniform intervals arrangement.

6. coal pulverizer capacity air door adjusting structure according to claim 1, which is characterized in that it is convex that weather strip is equipped with fastening Rib, wind deflector are equipped with compatible catching groove, and weather strip fastening is mounted on the two sides of wind deflector.

7. coal pulverizer capacity air door adjusting structure according to claim 1, which is characterized in that weather strip is equipped with for examining Survey the displacement sensor of the aperture between wind deflector and the first partition beam slab or wind deflector and the second partition beam slab.

8. coal pulverizer capacity air door adjusting structure according to claim 1, which is characterized in that weather strip is using wear-resisting stainless Steel material.