CN2301613Y - Improved coal supply adjustable shrinkage cavity device - Google Patents
Improved coal supply adjustable shrinkage cavity device Download PDFInfo
- Publication number
- CN2301613Y CN2301613Y CN 97234706 CN97234706U CN2301613Y CN 2301613 Y CN2301613 Y CN 2301613Y CN 97234706 CN97234706 CN 97234706 CN 97234706 U CN97234706 U CN 97234706U CN 2301613 Y CN2301613 Y CN 2301613Y
- Authority
- CN
- China
- Prior art keywords
- shrinkage cavity
- cavity device
- housing
- adjustable
- screw mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The utility model relates to an adjustable shrinkage cavity device which can be used for adjusting the flow flux of coal powders and gas mixture in coal supply pipelines of a power plant boiler. The adjustable shrinkage cavity device comprises a casing, a screw rod, a hand wheel and an adjusting plate. The utility model is characterized in that the adjusting plate has two blocks in a split type and can be driven by moving blocks which are sheathed on a left and a right screw threads of the screw rod. The adjusting plate can swing by adopting a pivot pin shaft which can be used as a center, and the expanding and the folding can implement the adjustment of the cross sections of powder holes. Compared with the existing adjustable shrinkage cavity device, the utility model has the advantage of good coal powder flow effect, and dust does not deposit on the adjusting plate easily; the adjusting stroke is short, and the rotation of the hand wheel and the screw rod is flexible and easy.
Description
The utility model proposes the adjustable shrinkage cavity device of a kind of improved coal supply, is that a kind of coal-supplying pipe that is used for boiler of power plant is regulated the parts of coal dust and admixture of gas circulation.
There is an adjustable shrinkage cavity device to be used in time adjusting the circulation of coal dust in the boiler of power plant coal-supplying pipe according to generator load.Original adjustable shrinkage cavity device has a housing that fuses with coal-supplying pipe, and housing is established a material hole, coal dust and admixture of gas from the material hole by entering next process; A handwheel is established in the housing top, drives an adjustable plate by a down-feed screw and regulates the flow of coal dust along the sectional area that material hole cross section moves up and down change coal, the logical material path of gas mixture.There are many shortcomings in this adjustable shrinkage cavity device: one, and screw mandrel drives adjustable plate and moves up and down, and influenced by the adjustable plate deadweight, rotates effort of handwheel, and dumb; The unidirectional mobile realization opening and closing of its two, adjustable plates, adjustment stroke is longer, and coal, gas mixture are to flow through departing from material centre, hole before reaching fully open position, can not obtain best circulation effect; Its three, the big dust stratification easily of the area of adjustable plate, gas can not be taken away the coal dust of piling up, running time is long more, dust stratification is many more, has increased the weight of adjustable plate, and operation is required great effort more.
The purpose of this utility model is that original adjustable shrinkage cavity device is improved design, overcomes above-mentioned each shortcoming.
The technical solution of the utility model is: the adjustable shrinkage cavity device of a kind of improved coal supply, have housing and adjustable plate, one material hole is arranged on the housing, screw mandrel is equipped with in the housing top, screw mandrel one end is stretched in the outer handwheel that connects of housing, it is characterized in that adjustable plate is made up of the crescent left side plate and the right panel piece of two symmetries: screw mandrel laterally is positioned at top, material hole, screw mandrel is provided with opposite left-hand thread of the symmetrical hand of spiral and right-hand thread, respectively be with a movable block on the left and right screw thread, each movable block is provided with a chute; The upper end of each adjustable plate is provided with a slidiing pin, and the lower end is provided with a fulcrum pin axle, and each slidiing pin is rabbeted respectively in the chute of corresponding left and right movable block, and each fulcrum pin axle is connected on the housing of the left and right sides, material centerline hole below.
Two adjustable plates are regulated material hole sectional area around two fulcrum left-right rotation sizes about the screw mandrel left and right sides screw thread that adjustable shrinkage cavity device after the improvement is the operation handwheel by level drives, the function that has original adjustable shrinkage cavity device fully, and has an advantage that did not have originally: at first, adjustable plate adopts the mode of splitting to regulate sectional area, coal dust and gas can flow through in material centre, hole all the time, and the circulation effect is better; Secondly, about adjustable plate is divided into two, single-block area is little, and the coal dust that is bonded on the adjustable plate is taken away by gas easily, is not easy dust stratification; Moreover the deadweight of adjustable plate is born by fulcrum pin axle, and handwheel and screw mandrel rotate flexibly, and laborsaving, two adjustable plates move simultaneously, and stroke is shorter, and therefore the required adjusting time is also short.
Make below in conjunction with the utility model embodiment and accompanying drawing and to further specify.
Accompanying drawing is the structure cutaway view of present embodiment.
Embodiment shown in the drawings, the adjustable shrinkage cavity device of a kind of improved coal supply has a housing 1 and an adjustable plate 4 that fuses with coal-supplying pipe, and a material hole 2 is arranged on the housing, and screw mandrel 9 is equipped with in housing 1 top, and screw mandrel 9 one ends are stretched in the housing 1 outer handwheel 10 that connects.Its improved design is that adjustable plate is made up of the crescent left side plate and the right panel piece 4 of two symmetries, and because of symmetrical structure, cutaway view only illustrates the structure on the right; Screw mandrel 9 laterally is positioned at material 2 tops, hole, and is provided with the symmetrical hand of spiral opposite left-hand thread 3 and right-hand thread 8, respectively is with a movable block 6 on the left and right sides screw thread 3,8, and each movable block 6 is provided with a chute 7; The upper end of each adjustable plate 4 is provided with a slidiing pin 5, the lower end is provided with a fulcrum pin axle 11, each slidiing pin 5 is rabbeted respectively in the chute 7 of corresponding left and right movable block 6, and each fulcrum pin axle 11 is connected on the housing 1 of 2 center lines below, material hole and arranged on left and right sides.Rotation hand wheel 10, screw mandrel 9 drives movable block 6 move left and right, the slidiing pin 5 of adjustable plate 4 slides up and down in the chute 7 of movable block 6, simultaneously, adjustable plate 4 is that the center swings with fulcrum pin axle 11, opens and closes up, regulate the cross section in material hole 2, when opening, being the cross section maximum position shown in double dot dash line among the figure, is the cross section minimum position when closing up.
Claims (1)
- The adjustable shrinkage cavity device of a kind of improved coal supply, have housing and adjustable plate, a material hole is arranged on the housing, screw mandrel is equipped with in the housing top, screw mandrel one end is stretched in the outer handwheel that connects of housing, it is characterized in that adjustable plate is made up of the crescent left side plate and the right panel piece of two symmetries; Screw mandrel laterally is positioned at top, material hole, and screw mandrel is provided with opposite left-hand thread of the symmetrical hand of spiral and right-hand thread, respectively is with a movable block on the left and right screw thread, and each movable block is provided with a chute; The upper end of each adjustable plate is provided with a slidiing pin, and the lower end is provided with a fulcrum pin axle, and each slidiing pin is rabbeted respectively in the chute of corresponding left and right movable block, and each fulcrum pin axle is connected on the housing of the left and right sides, material centerline hole below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234706 CN2301613Y (en) | 1997-06-03 | 1997-06-03 | Improved coal supply adjustable shrinkage cavity device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234706 CN2301613Y (en) | 1997-06-03 | 1997-06-03 | Improved coal supply adjustable shrinkage cavity device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2301613Y true CN2301613Y (en) | 1998-12-23 |
Family
ID=33945994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97234706 Expired - Fee Related CN2301613Y (en) | 1997-06-03 | 1997-06-03 | Improved coal supply adjustable shrinkage cavity device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2301613Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028654A (en) * | 2018-06-27 | 2018-12-18 | 芜湖盘云石磨新能源科技有限公司 | A kind of pipeline flow balancing device for earth source heat pump |
-
1997
- 1997-06-03 CN CN 97234706 patent/CN2301613Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028654A (en) * | 2018-06-27 | 2018-12-18 | 芜湖盘云石磨新能源科技有限公司 | A kind of pipeline flow balancing device for earth source heat pump |
| CN109028654B (en) * | 2018-06-27 | 2020-11-06 | 温州思鸣达工业产品设计有限公司 | Pipeline flow balancing device for ground source heat pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |