CN213445131U - Blanking unit, separating device and filtering and dust removing system - Google Patents
Blanking unit, separating device and filtering and dust removing system Download PDFInfo
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- CN213445131U CN213445131U CN202022318931.XU CN202022318931U CN213445131U CN 213445131 U CN213445131 U CN 213445131U CN 202022318931 U CN202022318931 U CN 202022318931U CN 213445131 U CN213445131 U CN 213445131U
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Abstract
The utility model relates to an unloading technical field specifically relates to an unloading unit, separator and filtration dust pelletizing system. The blanking unit comprises a blanking pipe (4), a rotary valve (5) and an instrument air pipe (1), wherein the blanking pipe (4) is used for conveying powder, the rotary valve (5) is arranged on the blanking pipe (4), the instrument air pipe (1) is connected with the blanking pipe (4) through a pipeline unit, and a connecting port, which is used for being connected with the pipeline unit, on the blanking pipe (4) corresponds to an inlet of the rotary valve (5), so that instrument air coming from the instrument air pipe reversely blows the powder accumulated at the inlet of the rotary valve (5) to blow down the accumulated powder. This unloading unit, separator and filtration dust pelletizing system can blow off the powder of piling up, avoid causing the jam.
Description
Technical Field
The utility model relates to an unloading technical field specifically relates to an unloading unit, separator and filtration dust pelletizing system.
Background
The 27-million-ton/year low-density polyethylene device is a process device in a new coal-based material project of 68-million-ton/year in Shenhua Xinjiang, introduces Lupotech TS high-pressure tubular method process technology of Basell (Basell) company in Germany, takes ethylene as a raw material, propionaldehyde or propylene as a molecular weight regulator, takes peroxide as an initiator, and adopts a polymerization mode of single-point feeding and 4-stage reaction to produce a low-density polyethylene homopolymerization product under the high-pressure state of 240 plus material and 310 MPa. The density of the polyethylene product can be controlled between 0.919 and 0.931g/cm3, and the melt index can be controlled between 0.3 and 4.0g/10 min.
The polyethylene granules are conveyed to an intermediate product bin from a buffer bin by adopting compressed air, are degassed for 12 hours, sampled and analyzed to be qualified, and then are conveyed to a packaging bin by the compressed air, and are filtered and dedusted by an elutriator before entering the packaging bin. The compressed air from the top of the packing building through the elutriator carries polyethylene powder into the cyclone separator, and when the powder falls in the tank, the pipeline above the rotary valve is easy to bridge, thus causing blockage. The existing solution is to stop feeding the packaging material bin whenever the rotary valve is blocked, and to take the rotary valve apart to clean the powder. Every time the material is fed, the rotary valve (indoor third floor) needs to be disassembled and cleaned for 1 to 2 times, the material is fed for 3 times every day, and the material is disassembled and cleaned for 3 to 6 times, so that the workload of post operators and maintenance personnel is greatly increased. When the cleaning agent is removed, a large amount of polyethylene fine powder raises dust, which causes great harm to human bodies. In addition, the rotary valve is frequently disassembled and cleaned, so that equipment and a flange sealing surface are extremely easy to damage.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the rotary valve top pipeline that prior art exists and piling up the powder easily and produce "bridging" phenomenon to cause the technical problem of jam, provide an unloading unit, separator and filtration dust pelletizing system, this unloading unit, separator and filtration dust pelletizing system can blow off accumulational powder, avoid causing the jam.
In order to realize the above object, the utility model discloses a first aspect provides an unloading unit, the unloading unit includes unloading pipe, rotary valve and instrument tuber pipe, the unloading pipe is used for carrying the powder, the rotary valve set up in on the unloading pipe, the instrument tuber pipe pass through the pipe unit with unloading union coupling, be used for on the unloading pipe with the connector of pipe unit connection with the entry of rotary valve corresponds, makes the follow instrument wind that the instrument tuber pipe comes is right the entrance of rotary valve is piled up the powder carries out the blowback, in order to be piled up the powder blows off.
Preferably, the pipe unit includes a pair of first pipes connected in parallel and respectively connected to the discharging pipes, and the pair of first pipes are symmetrically disposed with respect to the discharging pipes to blow back the deposited powder from opposite sides of the deposited powder.
Preferably, a pair of the first pipelines are respectively provided with a first ferrule ball valve.
Preferably, the first ferrule ball valve is disposed lower than the connection port.
Preferably, the pipe unit includes second pipes connected to the pair of first pipes, respectively, and the second pipes are provided with electromagnetic valves.
Preferably, the duct unit includes a third duct connected to the instrument air duct and the second duct, respectively, wherein:
a second ferrule ball valve is arranged on the third pipeline; and/or the presence of a gas in the gas,
and a pressure reducing valve is arranged on the third pipeline.
Preferably, the discharging unit includes a pair of the discharging pipes, a pair of the rotary valves respectively disposed on the discharging pipes, two pairs of the first pipes respectively connected to the two discharging pipes, a pair of the second pipes connected in parallel, and a third pipe respectively connected to the two second pipes.
The utility model discloses the second aspect provides a separator, separator include as above the unloading unit and with the unloading union coupling is in order to separate the powder carry extremely separator in the unloading pipe.
The utility model discloses the third aspect provides a filter dust pelletizing system, filter dust pelletizing system include as above separator and with the separator passes through pipe connection's elutriator, elutriator is arranged in screening the aggregate in the material that blows through compressed air and will all the other the material is carried extremely separate in the separator, the separator is cyclone.
Preferably: the filtering and dedusting system comprises a pair of dedusting units, each dedusting unit comprises an elutriator and a separator, each separator is connected with a blanking pipe, and the instrument air pipes are respectively connected with a pair of blanking pipes; and/or the presence of a gas in the gas,
the granules are polyethylene granules, and the powder is polyethylene powder.
Through above-mentioned technical scheme, can make the accumulational farine of rotary valve top pipeline blow off by the instrument wind of blowback, reduce the condition that the powder blockked up the pipeline, avoid needing often to tear clear rotary valve open, increase operating personnel and dimension guarantor's working strength's the condition, avoid tearing open the condition that has a large amount of farine raise dusts to produce when clear simultaneously, cause great harm to the human body, can also avoid because of frequently tearing open the condition of damaging equipment and the flange seal face that the rotary valve caused clearly.
Drawings
Fig. 1 is a schematic structural diagram of the blanking unit of the present invention.
Description of the reference numerals
1. An instrument air duct; 2. an electromagnetic valve; 3. a first ferrule ball valve; 4. a discharging pipe; 5. rotating the valve; 6. a pressure reducing valve; 7. a second ferrule ball valve.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, in the case where no explanation is made to the contrary, the usage of the directional words is generally based on the directions of the feeding unit, the separating device and the filtering and dust removing system in actual use.
The utility model discloses a first aspect provides an unloading unit, the unloading unit includes unloading pipe 4, rotary valve 5 and instrument tuber pipe 1, unloading pipe 4 is used for carrying the powder, rotary valve 5 set up in on the unloading pipe 4, instrument tuber pipe 1 pass through the pipe unit with unloading pipe 4 is connected, be used for on the unloading pipe 4 with the connector of pipe unit connection with rotary valve 5's entry corresponds, makes the follow the instrument wind that instrument tuber pipe 1 comes is right the entrance of rotary valve 5 is piled up the powder carries out the blowback, with will pile up the powder blows off.
Through above-mentioned technical scheme, can make 5 top pipelines of rotary valve accumulational farine blown down by the instrument wind of blowback, reduce the condition that the powder blockked up the pipeline, avoid needing often to tear clear rotary valve 5 open, increase operating personnel and dimension guarantor's working strength's the condition, avoid tearing open when clear simultaneously that there is a large amount of farine raise dusts to produce, cause the condition of great harm to the human body, can also avoid because of frequently tearing open the condition of damaging equipment and the flange seal face that clear rotary valve 5 caused.
In one embodiment, the pipe unit includes a pair of first pipes connected in parallel and respectively connected to the feeding pipe 4, and the pair of first pipes are symmetrically disposed with respect to the feeding pipe 4 to blow back the deposited powder from opposite sides of the deposited powder. That is, the two connection ports for connecting the pair of first pipes to each other are formed in the discharge pipe 4, so that the accumulated powder can be blown off quickly.
Optionally, an included angle between a pipe section of the first pipe, which is used for being connected with the blanking pipe 4, and the blanking pipe 4 is 45 degrees.
As an embodiment, a pair of the first pipelines are respectively provided with a first ferrule ball valve 3. Optionally, the first ferrule ball valve 3 is disposed adjacent to the feed pipe 4.
In one embodiment, the first bayonet ball valve 3 is arranged below the connection opening. Optionally, the first ferrule ball valve 3 is disposed lower than the connection port by 1.5m, so as to facilitate operation and maintenance.
As an embodiment, the pipe unit includes second pipes connected to a pair of the first pipes, respectively, and the second pipes are provided with solenoid valves 2.
As an implementation manner, the pipeline unit includes a third pipeline connected to the instrument air duct 1 and the second pipeline, respectively, and a second ferrule ball valve 7 is disposed on the third pipeline. That is, a third pipeline, a second pipeline and a first pipeline are sequentially connected between the instrument air pipe 1 and the discharging pipe 4, wherein each discharging pipe 4 is connected with two first pipelines, one second pipeline and one third pipeline.
In one embodiment, a pressure reducing valve 6 is provided in the third conduit. Optionally, the second ferrule ball valve 7 is disposed between the instrument air duct 1 and the pressure reducing valve 6. As an embodiment, the blanking unit includes a pair of the blanking pipes 4, a pair of the rotary valves 5 respectively disposed on the blanking pipes 4, two pairs of the first pipelines respectively connected to the two blanking pipes 4, a pair of the second pipelines connected in parallel, and a third pipeline respectively connected to the two second pipelines. Namely, the powder accumulated in the two discharging pipes 4 is purged through one instrument air pipe 1.
A second aspect of the present invention provides a separating device, which comprises a discharging unit and a separator connected to the discharging pipe 4 for separating the powder from the discharging pipe 4. Optionally, the separator is a cyclone separator, and the dust separated by the cyclone separator falls into the blanking pipe 4.
The utility model discloses the third aspect provides a filter dust pelletizing system, filter dust pelletizing system include as above separator and with the separator passes through pipe connection's elutriator, elutriator is arranged in screening the aggregate in the material that blows through compressed air and will all the other the material is carried extremely separate in the separator, the separator is cyclone.
As an embodiment, the filtering and dust removing system comprises a pair of dust removing units, each dust removing unit comprises one elutriator and one separator, each separator is connected with one blanking pipe 4, and the instrument air pipes 1 are respectively connected with a pair of blanking pipes 4. Namely, the two dust removal units share one instrument air pipe 1 to purge the powder accumulated in the blanking pipe 4. As another embodiment, one instrument air duct 1 may be connected to more than two blanking pipes 4.
In one embodiment, the pellets are polyethylene pellets and the powder is polyethylene powder. Namely the filtration and dust removal system is an LDPE (Low Density polyethylene) system. Polyethylene granules are conveyed to an intermediate product bin from a buffer bin by compressed air, after 12 hours of degassing, sampling and analyzing are qualified, then the polyethylene granules are conveyed to a packaging bin by the compressed air, before the polyethylene granules enter the packaging bin, the polyethylene granules are filtered and dedusted by an elutriator, the granules are blown forward by air of a conveying fan, the compressed air carries the product granules to enter the elutriator for separation, the separated product enters a packaging machine for packaging, the compressed air at the top of a packaging building after passing through the elutriator carries polyethylene powder to enter a cyclone separator, fine powder falls into a blanking pipe 4 in the tank, a pipeline above a rotary valve 5 is easy to bridge and cause blockage, the configuration instrument air periodic back blowing is realized in a DCS (distributed control system) by adding control valves such as an instrument 1 and an electromagnetic valve 2 on the pipeline above the rotary valve 5, the fine powder accumulated on the pipeline above the rotary valve 5 is blown down by the instrument air which is subjected to periodic back blowing, no longer blocking the pipeline. The fine powder accumulated in the pipeline above the rotary valve 5 is blown off by using periodic instrument wind, so that the pipeline is not blocked, the flow is simple, and the cost is low.
Optionally, the instrument tuber pipe can adopt 16 meters's nonrust steel pipe, 2 solenoid valves, and the relief pressure valve is 1, and 5 cutting ferrule ball valves adopt 80 meters signal cable to go into the DCS system with 2 communication of solenoid valve, realize periodic automatic control, if the instrument tuber pipe blocks up, can unpack the cutting ferrule ball valve apart rapidly, clear up, if the solenoid valve trouble, can force open the solenoid valve, use on-the-spot ball valve manual control instrument wind to carry out the blowback.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The utility model provides a blanking unit, its characterized in that, blanking unit includes unloading pipe (4), rotary valve (5) and instrument tuber pipe (1), unloading pipe (4) are used for carrying the powder, rotary valve (5) set up in on unloading pipe (4), instrument tuber pipe (1) pass through the pipe unit with unloading pipe (4) are connected, be used for on unloading pipe (4) with the connector of pipe unit connection with the entry of rotary valve (5) corresponds for the instrument wind that comes from the instrument tuber pipe is to the entrance of rotary valve (5) is piled up the powder carries out the blowback, in order to with piling up the powder blows off.
2. The blanking unit according to claim 1, wherein said duct unit comprises a pair of first ducts connected in parallel and respectively to said blanking duct (4), said pair of first ducts being arranged symmetrically with respect to said blanking duct (4) for the blowback of the deposited powders from opposite sides thereof.
3. Blanking unit according to claim 2, wherein a first snap ball valve (3) is arranged on each of said pair of first ducts.
4. Blanking unit according to claim 3, wherein the first ferrule ball valve (3) is arranged lower than the connection port.
5. Blanking unit according to claim 2, wherein said duct unit comprises second ducts connected respectively to a pair of said first ducts, said second ducts being provided with solenoid valves (2).
6. The blanking unit of claim 5, wherein the duct unit comprises a third duct connected to the instrument air duct and the second duct, respectively, wherein:
a second ferrule ball valve (7) is arranged on the third pipeline; and/or the presence of a gas in the gas,
and a pressure reducing valve (6) is arranged on the third pipeline.
7. The blanking unit according to claim 6, characterized in that it comprises a pair of said blanking tubes (4), a pair of said rotary valves (5) respectively arranged on said blanking tubes (4), two pairs of said first pipes respectively connected to two of said blanking tubes (4), a pair of said second pipes connected in parallel and a third pipe respectively connected to two of said second pipes.
8. A separating device, characterized in that it comprises a blanking unit according to any one of claims 1-7 and a separator connected to the blanking pipe (4) for conveying the separated powder into the blanking pipe (4).
9. A dust filtration system comprising the separation device of claim 8 and an elutriator connected to the separator by a pipe, the elutriator being adapted to sift out particulate material from the compressed air blown material and to convey the remaining material to the separator for separation, the separator being a cyclone separator.
10. The filter dust removal system of claim 9, wherein:
the filtering and dedusting system comprises a pair of dedusting units, each dedusting unit comprises an elutriator and a separator, each separator is connected with one blanking pipe (4), and the instrument air pipes are respectively connected with a pair of blanking pipes (4); and/or the presence of a gas in the gas,
the granules are polyethylene granules, and the powder is polyethylene powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318931.XU CN213445131U (en) | 2020-10-16 | 2020-10-16 | Blanking unit, separating device and filtering and dust removing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022318931.XU CN213445131U (en) | 2020-10-16 | 2020-10-16 | Blanking unit, separating device and filtering and dust removing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213445131U true CN213445131U (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022318931.XU Active CN213445131U (en) | 2020-10-16 | 2020-10-16 | Blanking unit, separating device and filtering and dust removing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213445131U (en) |
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- 2020-10-16 CN CN202022318931.XU patent/CN213445131U/en active Active
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