CN203140317U - Secondary pre-distributed air distributor with net frame structure - Google Patents
Secondary pre-distributed air distributor with net frame structure Download PDFInfo
- Publication number
- CN203140317U CN203140317U CN 201320095172 CN201320095172U CN203140317U CN 203140317 U CN203140317 U CN 203140317U CN 201320095172 CN201320095172 CN 201320095172 CN 201320095172 U CN201320095172 U CN 201320095172U CN 203140317 U CN203140317 U CN 203140317U
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- grid structure
- frame structure
- net frame
- division board
- fabric layer
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Abstract
The utility model relates to a secondary pre-distributed air distributor with a net frame structure, and is suitable for an air heavy-medium fluidizing bed separator for separating coal and other mineral materials. The air distributor comprises the net frame structure, wherein an upper fabric layer is arranged above the net frame structure and is provided with a metal screen pressing plate, a top metal strip isolation plate is arranged under the net frame structure, a lower fabric layer and a bottom metal strip isolation layer are sequentially arranged under the top metal strip isolation plate, an upper edge framework and a lower edge framework of the net frame structure are respectively of an inner concave structure, the inner concave structures of the net frame structure are riveted with the metal screen pressing plate and the bottom metal strip isolation plate through bolts, and the joints of the net frame structure, the metal screen pressing plate and the bottom metal strip isolation plate are sealed by sealant. The air distributor has the advantages that the structure is stable, the support capability is high, the blockage and the leakage are avoided, and the air distribution is uniform.
Description
Technical field
The utility model relates to a kind of gas distributor, especially to be used for the pre-distributed grid structure gas distributor of the employed secondary of air dense medium fluid-bed separator of a kind of coal and other sorting mineral.
Background technology
On the coal and the processing of other sorting minerals of drought and water shortage, severe cold frost region, traditional wet sorting method is difficult to be suitable for, and air dense medium fluidized bed dry coal preparation technology can satisfy this sorting requirement preferably.In air dense medium fluidized bed dry coal preparation technology, gas distributor is gas to be entered bed evenly distribute before, adjusts or control the device of its flow velocity, and it plays decisive role for forming high-quality fluidized-bed layer.At present the gas distributor commonly used method that adopts the steel plate folder number that has aperture to become to weave cotton cloth is made, percent opening about 30%, reduce pressure and the effect of disperseing gas though can reach, but problems such as this technology ubiquity air distribution plate plug-hole, dense media macroscopic view back-mixing, ability to bear are poor, bed pressure drop deficiency cause the separating effect of mineral relatively poor; In the air dense medium fluid bed telecontrol equipment is arranged simultaneously, need separate conveying to selecting material, drag conveyor in the separator needs continuously sorted product to be discharged outside the machine, be subjected to its thrust, in the bed bottom, the strong hardness hypostasis and the air distribution plate that are in stacking states are in extruding and abrasion state constantly, this has caused the fragmentation of hypostasis and the wearing and tearing of air distribution plate upper surface, and pulverize the particulate hypostasis that produces and stop up air admission hole easily, influence performance and the service life of air distribution plate, therefore dry technique has unique distinction to the requirement of bed gas inside distributor, with respect to distribution grid commonly used, it is in anti-blocking, easy to clean, seem most important on the performances such as abrasion resistance properties and supplemental support bed material.Researchs such as scholar Douglas think, the pressure drop that the pressure drop that distributor produces in the time of should having gas by it must produce by bed greater than gas; Experiments such as scholar Beeckmans show that nonwoven fabric layer is core, and pressure drop mainly results from this; The basic research of Chen Qingru etc. proposes to adopt the two-stage composite distributor, in the cloth wind theory of low fluidization number operation, has arrived the purpose of even distributing wind.
Summary of the invention
At the deficiencies in the prior art part, provide a kind of Stability Analysis of Structures, strong, the anti-blocking leakproof of enabling capabilities, the pre-distributed grid structure gas distributor of the uniform secondary of cloth wind.
For achieving the above object, the pre-distributed grid structure gas distributor of secondary of the present utility model, comprise grid structure, the grid structure top is covered with the upper end nonwoven fabric layer, the upper end nonwoven fabric layer is provided with the woven wire pressboard, the grid structure below is provided with top metal bar division board, top metal bar division board below is sequentially with lower end nonwoven fabric layer and bottom bonding jumper division board, described grid structure upper and lower side frame is concave inward structure, the concave inward structure of grid structure and woven wire pressboard and bottom bonding jumper division board are riveted grid structure by bolt, woven wire pressboard and bottom bonding jumper division board are tightly connected with fluid sealant.
Described bonding jumper division board is made up of the uniformly thin bonding jumper in a slit; Described woven wire pressboard is formed by the fine metal mesh compacting.
Beneficial effect, the utility model is when utilizing compressed air to pass through air distribution plate, the secondary that forms gas in grid structure in the pressure stabilizing chamber distributes in advance, hypotensive effect through nonwoven fabric layer, produce uniform stabilizing gas, strengthened the contact between the gas-solid two-phase in the fluid bed, be conducive to bed and form even and stable fluidized state.This gas distributor surface adopts the woven wire pressboard can control pressure drop, even distributing wind, has certain intensity simultaneously, can embed and supplemental support bed material by anti-lump material, be connected with grid structure and strengthened the supporting role of gas distributor to the bed material.Compare and traditional gas distributor, its grid structure is simple rigid more, improved gas cloth wind effect, suppressed plug-hole small opening phenomenon, supporting with existing air dense medium fluidization, realize the clean sorting of the energy-efficient stable dry method of coal, ore and other materials, the resource high-efficiency in especially suitable drought and water shortage area is processed and is utilized.
Description of drawings:
Accompanying drawing 1 is the phantom of the utility model external form figure.
Among the figure: 1-woven wire pressboard, 2-upper end nonwoven fabric layer, 3-grid structure, 4-top metal bar division board, 5-lower end nonwoven fabric layer, 6-bottom bonding jumper division board.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
As shown in Figure 1, the pre-distributed grid structure gas distributor of secondary described in the utility model is made up of woven wire pressboard 1, upper end nonwoven fabric layer 2, grid structure 3, top metal bar division board 4, lower end nonwoven fabric layer 5, bottom bonding jumper division board 6; Purse rope shelf structure 3 tops are covered with upper end nonwoven fabric layer 2, upper end nonwoven fabric layer 2 is provided with woven wire pressboard 1, described woven wire pressboard 1 is formed by the fine metal mesh compacting, its surface porosity factor is little, have certain air permeability and enabling capabilities, grid structure 3 belows are provided with top metal bar division board 4, top metal bar division board 4 belows are sequentially with lower end nonwoven fabric layer 5 and bottom bonding jumper division board 6, described bonding jumper division board 5 is made up of thin bonding jumper, the slit is even between the bonding jumper, bottom bonding jumper division board 6 is the finer wire plate, described grid structure 3 upper and lower side frames are concave inward structure, the concave inward structure of grid structure 3 and woven wire pressboard 1 and bottom bonding jumper division board 5 are by bolt riveted joint, grid structure 3, the fluid sealant sealing is adopted in woven wire pressboard 1 and bonding jumper division board 6 junctions, bottom.
Use: the gas distributor top is piled up a certain amount of powder medium solid is arranged, the powder medium solid is acted on the woven wire pressboard 1 by the pressure that gravity produces, when being subjected to external force, woven wire pressboard 1 does the time spent, it is scattered in grid structure 3 to pressure equably, has strengthened gas distributor shock resistance and ability to bear; Pre-distribution effect by outside blast apparatus and air chamber is to the gas distributor Compressed Gas of making a gift to someone, Compressed Gas sees through bottom bonding jumper division board 6, lower end nonwoven fabric layer 5 and top metal bar division board 4 up spread, in this process, produce certain antihypertensive effect, the while ascending air carries out secondary and distributes in advance in the pressure stabilizing chamber in grid structure 3, increased the stability of gas, steady air flow continues upwards to transmit, under the collaborative step-down and the effect of cloth wind by upper end nonwoven fabric layer 2 and woven wire pressboard 1, see through the gas distributor surface equably, form the gas that is fit to the air dense medium fluid bed separation, thereby promote that fluid bed forms uniform and stable fluidized state.
Claims (3)
1. pre-distributed grid structure gas distributor of secondary, it is characterized in that: it comprises grid structure (3), grid structure (3) top is covered with upper end nonwoven fabric layer (2), upper end nonwoven fabric layer (2) is provided with woven wire pressboard (1), grid structure (3) below is provided with top metal bar division board (4), top metal bar division board (4) below is sequentially with lower end nonwoven fabric layer (5) and bottom bonding jumper division board (6), described grid structure (3) upper and lower side frame is concave inward structure, the concave inward structure of grid structure (3) and woven wire pressboard (1) and bottom bonding jumper division board (5) are by bolt riveted joint, grid structure (3), woven wire pressboard (1) and bottom bonding jumper division board (6) are tightly connected with fluid sealant.
2. the pre-distributed grid structure gas distributor of secondary according to claim 1 is characterized in that: described bonding jumper division board (5) is made up of the uniformly thin bonding jumper in a slit.
3. the pre-distributed grid structure gas distributor of secondary according to claim 1 is characterized in that: described woven wire pressboard (1) is formed by the fine metal mesh compacting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320095172 CN203140317U (en) | 2013-03-04 | 2013-03-04 | Secondary pre-distributed air distributor with net frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320095172 CN203140317U (en) | 2013-03-04 | 2013-03-04 | Secondary pre-distributed air distributor with net frame structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203140317U true CN203140317U (en) | 2013-08-21 |
Family
ID=48967873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320095172 Expired - Fee Related CN203140317U (en) | 2013-03-04 | 2013-03-04 | Secondary pre-distributed air distributor with net frame structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203140317U (en) |
-
2013
- 2013-03-04 CN CN 201320095172 patent/CN203140317U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160304 |