CN106516752A - Plunger type pulverized coal pressurized conveying device - Google Patents
Plunger type pulverized coal pressurized conveying device Download PDFInfo
- Publication number
- CN106516752A CN106516752A CN201610994616.4A CN201610994616A CN106516752A CN 106516752 A CN106516752 A CN 106516752A CN 201610994616 A CN201610994616 A CN 201610994616A CN 106516752 A CN106516752 A CN 106516752A
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- Prior art keywords
- fine coal
- pulverized coal
- line
- valve
- feed
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- 239000003245 coal Substances 0.000 title claims abstract description 193
- 238000012546 transfer Methods 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 229910052756 noble gas Inorganic materials 0.000 description 7
- 150000002835 noble gases Chemical class 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000035611 feeding Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
- B65G53/08—Gas pressure systems operating without fluidisation of the materials with mechanical injection of the materials, e.g. by screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
- B65G53/4683—Gates or sluices, e.g. rotary wheels with a reciprocating mover acting directly on material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/48—Screws or like rotary conveyors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention provides a plunger type pulverized coal pressurized conveying device, which belongs to the technical field of coal chemical industry and is used for solving the problems of low efficiency and the like of the existing pulverized coal pressurized conveying technology; the upper end and the lower end of the conveying channel are respectively connected with the normal-pressure storage tank and the pulverized coal feeding tank; the upper end of the conveying channel is provided with an atmospheric pressure feeding valve, the lower end outlet of the atmospheric pressure feeding valve is connected with a telescopic pulverized coal conveying pipeline, the lower end of the telescopic pulverized coal conveying pipeline is connected with a worm pulverized coal conveying pipeline, the lower end of the worm pulverized coal conveying pipeline is connected with a pulverized coal feeding valve in a piston part, the piston part is positioned in a pulverized coal conveying cavity, the lower end output port of the pulverized coal conveying cavity is connected with the upper end inlet of a blanking section, the lower end outlet of the blanking section is connected with a pulverized coal feeding tank, and a pulverized coal blanking valve is arranged at the joint of the pulverized coal; the driving component is used for driving the piston component to do reciprocating linear motion. The device has the characteristic of low energy consumption.
Description
Technical field
The present invention relates to technical field of coal chemical industry, particularly relates to a kind of plunger type fine coal pressure conveyer device.
Background technology
The pressurized delivered process of powder body is directed in numerous areas such as Coal Chemical Industry, metallurgy, food processings.Coal gasification, especially
It is it is powdered coal pressuring gasified be a kind of cleaning coal utilization technology, be rapidly progressed in recent years, carried out more and more extensive
Utilize.Fine coal pressurized delivered technology is indispensable sport technique segment in powdered coal pressuring gasified technology.Fine coal pressurized delivered technology
It is that dry pulverized coal is improved to a certain specific high pressure from normal pressure, to realize fine coal burning under high pressure with gasification.
The fine coal pressurized delivered technology for industrially using at present is mainly lock hopper pressurized delivered, and its principle is to use high pressure
Noble gases pour fine coal pressurization lock hopper, improve pressure, it is balanced with fine coal pressure of storage tank after fine coal is delivered to into fine coal storage tank,
The high-pressure inert gas in fine coal lock hopper are emitted into into air afterwards.As Chinese patent of the patent publication No. for CN1376761 is situated between
During the dry coal powder pressure gasifying for continuing the feeding device of dry pulverized coal include a conical surface be provided with noble gas inlet device for storing up
Deposit the middle batch can of fine coal, a high-pressure powder coal bunker being connected by pipeline with middle material pot bottom, a carrier gas and fine coal
Blender.The course of conveying of fine coal is that the combination collaboration by rotatory feeder valve with carrier gas is completed.This kind of fine coal pressurization is defeated
Feed technique exist major defect be：Pressure process needs to discharge substantial amounts of noble gases such as N2、CO2Deng causing larger ring
Pollute in border；Pressurized delivered process efficiency is low, it is impossible to realize continuously adjustabe；Pressurized delivered needs volume big and that cost is high is high pressure resistant
Equipment；Energy consumption is big, and the sealing of fine coal pipeline valve is had high demands with pressure.
In addition, a kind of number of patent application dry pulverized coal conveyer device that has been 201510639812.5 Introduction To Cn Patent, its
Major defect is：Need, with balance fine coal cylinder and the pressure of environment under high pressure, to need into circulation of qi promoting in exhaust process in pressure process
It is external to arrange, and these balance pipelines and outer comb line under conditions of the presence of a large amount of fine coal are easy to be blocked；Pressurized delivered mistake
Journey efficiency is low, it is impossible to realize continuously adjustabe；Using Y types sealing well wear extent can not be compensated, cause sealing to make
It is not high with the life-span.
To sum up, above two fine coal pressurized delivered technology all has certain limitation, there is course of conveying efficiency low, no
The problems such as continuously adjustabe being realized.
The content of the invention
Substantial amounts of noble gases are discharged in order to solve current fine coal pressurized delivered technology, larger environmental pollution is caused；Conveying
Process efficiency is low, though feeding quantity can stablize controllable, can not continuously adjust；Need volume big and high pressure resistant equipment that cost is high；
Energy consumption is big, and the problems such as sealing fine coal pipeline valve with pressure having high demands, the embodiment of the present invention provides a kind of plunger type fine coal and adds
Pressure conveyer device, improves the pressure of fine coal by the motion of piston element, it is not necessary to which noble gases participate in conveying, while can enter
The continuous conveying of row fine coal, has the advantages that energy consumption is low.
A kind of plunger type fine coal pressure conveyer device that the present invention is provided, including：Driver part and two for be arrangeding in parallel
Transfer passage；The upper and lower ends of the transfer passage are connected with atmospheric storage tank and fine coal feedstock vessel respectively；
The transfer passage upper end is normal pressure inlet valve, and the lower end outlet scalable fine coal of connection of the normal pressure inlet valve is defeated
Send pipeline, the lower end connecting worm fine coal feed-line of the scalable fine coal feed-line, the worm screw fine coal feed-line
Lower end be connected with the fine coal inlet valve inside piston element, the piston element is located at fine coal and conveys intracavity, and the fine coal is defeated
Send the upper end in chamber that there is a perforate, the worm screw fine coal feed-line stretches into the fine coal by the perforate and conveys intracavity, institute
The lower end delivery outlet for stating fine coal conveyor chamber connects the upper end entrance of blanking section, lower end outlet and the fine coal feedstock vessel of the blanking section
The junction of connection, the fine coal conveyor chamber and blanking section is provided with fine coal discharge valve；
The driver part is used to drive the piston element defeated in the fine coal by the worm screw fine coal feed-line
Intracavity is sent to do linear reciprocating motion.
In a kind of specific embodiment, the fine coal inlet valve and fine coal discharge valve are check valve.
In a kind of specific embodiment, the fine coal discharge valve includes：Support, sliding cylinder body, slide unit, valve element,
Spring；One end of the sliding cylinder body is connected with supporting, and the other end is connected with valve element by some springs；The slide unit
One end is connected with valve element, and other end is slided in the sliding cylinder body.
In a kind of specific embodiment, the piston element adopts combined seal structure, combined labyrinth and carbon gland end to adopt
Sealed with wear-resisting folder cloth, primary seal is sealed using the formula that can compensate for.
In a kind of specific embodiment, the driver part is arranged at the worm screw fine coal feed-line of two conveyance conduits
Between, the driver part is bi-directional drive, positive/negative to be used to drive the piston element of left/right transfer passage to exist to driving
Move downward in the fine coal conveyor chamber and the piston element of right side/left side transfer passage is transported in the fine coal conveyor chamber upwards
It is dynamic.
In a kind of specific embodiment, the driver part includes motor and to be connected to the motor defeated
Gear on shaft, the gear are arranged between the worm screw fine coal feed-line of two conveyance conduits, and a left side for the gear,
Right-hand wheel edge is engaged with the worm screw fine coal feed-line respectively.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
The above-mentioned plunger type fine coal pressure conveyer device that the present invention is provided, improves fine coal by the motion of piston element
Pressure, it is not necessary to which noble gases participate in conveying；Two transfer passage alternations, when the piston element of a transfer passage it is downward
During motion, the piston element of another transfer passage is then moved upwards, can be to lower/upper to the piston element of up/down movement
The piston element of motion provides certain power, reduces power consumption, while ensure that the continuous conveying of fine coal；Using unidirectional
The design of valve, eliminate it is loaded down with trivial details automatically control, reliability is higher；Using combined seal structure, substantially increasing sealing makes
Use the life-span；Fine coal charging aperture is arranged on piston element, is together moved with piston element, can be with effectively solving piston seal via
Problem；Device volume is little, lightweight, and greatly reduces other devices；Due to the reduction of device feature, so as to reduce powder
Coal pipeline.
Description of the drawings
Fig. 1 is a kind of plunger type fine coal pressure conveyer device structural representation provided in an embodiment of the present invention；
Fig. 2 is fine coal discharge valve structural representation.
[description of reference numerals]
1st, normal pressure inlet valve；
2nd, scalable fine coal feed-line；
3rd, worm screw fine coal feed-line；
4th, driver part；
5th, piston element；
6th, fine coal inlet valve；
7th, fine coal conveyor chamber；
8th, fine coal discharge valve；
9th, blanking section；
10th, atmospheric storage tank；
11st, fine coal feedstock vessel；
81st, support；
82nd, sliding cylinder body；
83rd, slide unit；
84th, valve element；
85th, spring.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
If Fig. 1 is a kind of plunger type fine coal pressure conveyer device structural representation provided in an embodiment of the present invention, in such as Fig. 1
Shown, the device includes：Driver part 4 and two transfer passages be arrangeding in parallel；The upper and lower ends difference of the transfer passage
It is connected with atmospheric storage tank 10 and fine coal feedstock vessel 11；The transfer passage includes normal pressure inlet valve 1, scalable fine coal feed-line
2nd, worm screw fine coal feed-line 3, piston element 5, fine coal inlet valve 6, fine coal conveyor chamber 7, fine coal discharge valve 8, blanking section 9；Its
In, transfer passage upper end is normal pressure inlet valve 1, and the scalable fine coal feed-line 2 of lower end outlet connection of normal pressure inlet valve 1 can
The lower end connecting worm fine coal feed-line 3 of flexible fine coal feed-line 2, the lower end of worm screw fine coal feed-line 3 and piston portion
Fine coal inlet valve 6 inside part 5 connects, and piston element 5 is located in fine coal conveyor chamber 7, and the upper end of fine coal conveyor chamber 7 is opened with one
Hole, worm screw fine coal feed-line 3 are stretched in fine coal conveyor chamber 7 by the perforate, the lower end delivery outlet connection of fine coal conveyor chamber 7
The upper end entrance of blanking section 9, the lower end outlet of blanking section 9 are connected with fine coal feedstock vessel 11, fine coal conveyor chamber 7 and blanking section 9
Junction is provided with fine coal discharge valve 8；Driver part 4 is used to drive piston element 5 in fine coal by worm screw fine coal feed-line 3
Linear reciprocating motion is done in conveyor chamber 7.It is preferred that transfer passage is arranged perpendicular to ground, it is beneficial to fine coal therein and falls.
The operation principle of Fig. 1 shown devices is：When transfer passage state is as shown in transfer passage on the left of Fig. 1, fine coal is defeated
It is tiny structure in sending chamber 7, now the fine coal in atmospheric storage tank 10 enters into scalable fine coal feed-line by normal pressure inlet valve 1
2, subsequently into worm screw fine coal feed-line 3, are provided with fine coal inlet valve 6 in the end of worm screw fine coal feed-line 3, now powder
Coal inlet valve 6 is open mode, and fine coal declines by gravity naturally in the process and falls in fine coal conveyor chamber 7.When fine coal plus
During full fine coal conveyor chamber 7, drive worm screw fine coal feed-line 3 to move downward by driver part 4, be now connected to worm screw fine coal
Piston element 5 on feed-line 3 is also moved downwardly together, and the fine coal in fine coal conveyor chamber 7 is pressurized, when pressure is higher than
During external atmosphere pressure, fine coal inlet valve 6 is automatically switched off, and piston element 5 continues to move downward, when in fine coal conveyor chamber 7, pressure is high
When fine coal feedstock vessel 11, fine coal discharge valve 8 is automatically opened up, and fine coal is entered in high-pressure powdered coal feedstock vessel 11 by blanking section 9.With
Afterwards, piston element 5 continues to move down, when reaching fine coal 7 bottom of conveyor chamber, transfer passage state transfer passage on the right side of Fig. 1
Shown, now the fine coal in fine coal conveyor chamber 7 is fully contemplated in fine coal feedstock vessel 11.It is subsequently reversely dynamic by driver part 4
Make, drive worm screw fine coal feed-line 3 to move upwards, and then piston element 5 is also moved upwards, fine coal discharge valve 8 is given in fine coal
It is automatically switched off in the presence of 11 high pressure of batch can, when piston element 5 reaches fine coal 7 tip position of conveyor chamber, fine coal conveyor chamber 7 becomes
For tiny structure, transfer passage state is returned on the left of Fig. 1 shown in transfer passage.Repeating said process can ensure that fine coal continuously from low
It is pressed onto the conveying of high pressure.
Preferably, fine coal inlet valve 6 and fine coal discharge valve 8 are check valve.Due to the one-way valve designs for adopting, eliminate numerous
Trivial automatically controls, and reliability is higher.
In above-described embodiment, fine coal inlet valve 6 is arranged on inside piston element 5, is moved, so together with piston element 5
Design solve the problems, such as that piston element through charging hole, substantially increases the effect and service life of sealing.
Preferably, structural representations of the Fig. 2 for fine coal discharge valve 8.As shown in Fig. 2 fine coal discharge valve 8 includes：Support 81,
Sliding cylinder body 82, slide unit 83, valve element 84, spring 85；One end of sliding cylinder body 82 is connected with support 81, if the other end passes through
Dry root spring 85 is connected with valve element 84；83 one end of slide unit is connected with valve element 84, and other end is sliding in sliding cylinder body 82
It is dynamic.
The operation principle of fine coal discharge valve shown in Fig. 28 is：When 7 pressure of fine coal conveyor chamber is more than fine coal feedstock vessel 11, valve
Core 84 overcomes the spring force of spring 85 under differential pressure action, is moved downwardly to open position, when piston element 5 is moved upwards,
Pressure in fine coal conveyor chamber 7 reduces, and valve element 84 moves upward to closed position in the presence of spring 85.By adjusting spring
The power that 85 quantity can be opened with control valve, and then control conveying pressure reduction.
Preferably, piston element 5 adopts combined seal structure, wherein, combined labyrinth and carbon gland end adopts wear-resisting folder cloth
Formula is sealed, and primary seal is sealed using the formula that can compensate for.I.e.：The end of piston element 5 is sealed using wear-resisting folder cloth, effectively can be scraped
Except fine coal, fine coal is made to be greatly reduced into the amount of primary seal；Primary seal using can compensate for formula sealing, can mend by this sealing matrix employing
Formula structure is repaid, appearance covers high-abrasive material, and such combined seal structure can be effectively increased the service life of sealing.
Preferably, driver part 4 is arranged between the worm screw fine coal feed-line 3 of two conveyance conduits, and driver part 4 is
Bi-directional drive, it is positive/negative to be used to drive the piston element 5 of left/right transfer passage to be transported in fine coal conveyor chamber 7 downwards to driving
The piston element 5 of dynamic and right side/left side transfer passage is moved in fine coal conveyor chamber 7 upwards.Can so make two conveyings logical
On the one hand road adverse movement simultaneously, two transfer passage alternation feedings can carry out the continuous conveying of fine coal, on the other hand
Can power each other, save power consumption.
Preferably, driver part 4 includes motor and the gear being connected in the driving motor output shaft, described
Gear is arranged between the worm screw fine coal feed-line 3 of two conveyance conduits, and the left and right side wheel rim of the gear respectively with snail
Bar fine coal feed-line 3 is engaged.
In such scheme, the pressure of fine coal is improved by the motion of piston element, it is not necessary to which noble gases participate in conveying；
Two transfer passages adopt alternation, when the piston element of a transfer passage is moved downward, another transfer passage
Piston element then move upwards, can be to provide certain to the piston element of lower/upper motion to the piston element of up/down movement
Power, reduces power consumption, while ensure that the continuous conveying of fine coal；Using the design of check valve, eliminate it is loaded down with trivial details from
Dynamic control, reliability are higher；Using combined seal structure, sealing service life is substantially increased；Fine coal charging aperture is arranged on
On piston element, together move with piston element, can be with the problem of effectively solving piston seal via；Device volume is little, weight
Gently, and other devices are greatly reduced；Due to the reduction of device feature, so as to reduce fine coal pipeline.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of plunger type fine coal pressure conveyer device, it is characterised in that include：Driver part (4) and be arranged in parallel two
Transfer passage；The upper and lower ends of the transfer passage are connected (11) with atmospheric storage tank (10) and fine coal feedstock vessel respectively；
The transfer passage upper end is normal pressure inlet valve (1), and the lower end of the normal pressure inlet valve (1) exports the scalable fine coal of connection
Feed-line (2), lower end connecting worm fine coal feed-line (3) of the scalable fine coal feed-line (2), the worm screw powder
The lower end of coal feed-line (3) the fine coal inlet valve (6) internal with piston element (5) is connected, and the piston element (5) is positioned at powder
In coal conveyor chamber (7), the upper end of the fine coal conveyor chamber (7) has a perforate, and the worm screw fine coal feed-line (3) is by institute
State perforate to stretch in the fine coal conveyor chamber (7), the lower end delivery outlet of the fine coal conveyor chamber (7) connects the upper of blanking section (9)
End entrance, the lower end outlet of the blanking section (9) are connected with fine coal feedstock vessel, the fine coal conveyor chamber (7) and blanking section (9)
Junction is provided with fine coal discharge valve (8)；
The driver part (4) drives the piston element (5) in the powder for passing through the worm screw fine coal feed-line (3)
Linear reciprocating motion is done in coal conveyor chamber (7).
2. plunger type fine coal pressure conveyer device as claimed in claim 1, it is characterised in that the fine coal inlet valve (6) and
Fine coal discharge valve (8) is check valve.
3. plunger type fine coal pressure conveyer device as claimed in claim 2, it is characterised in that fine coal discharge valve (8) bag
Include：Support (81), sliding cylinder body (82), slide unit (83), valve element (84), spring (85)；The one of the sliding cylinder body (82)
End is connected with (81) are supported, and the other end is connected with valve element (84) by some springs (85)；Described slide unit (83) one end
It is connected with valve element (84), other end is slided in the sliding cylinder body (82).
4. the plunger type fine coal pressure conveyer device as any one of claim 1-3, it is characterised in that the piston portion
Part (5) adopts combined seal structure, combined labyrinth and carbon gland end to seal using wear-resisting folder cloth, and primary seal is adopted and can compensate for formula
Sealing.
5. plunger type fine coal pressure conveyer device as claimed in claim 4, it is characterised in that the driver part (4) is arranged
Between worm screw fine coal feed-line (3) of two conveyance conduits, the driver part (4) is bi-directional drive, positive/negative to driving
For driving the piston element (5) of left/right transfer passage to move downward and right side/left side in the fine coal conveyor chamber (7)
The piston element (5) of side transfer passage is moved in the fine coal conveyor chamber (7) upwards.
6. plunger type fine coal pressure conveyer device as claimed in claim 5, it is characterised in that the driver part (4) includes
Motor and the gear being connected in the driving motor output shaft, the gear are arranged at the worm screw of two conveyance conduits
Between fine coal feed-line (3), and the left and right side wheel rim of the gear is engaged with the worm screw fine coal feed-line (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994616.4A CN106516752B (en) | 2016-11-11 | 2016-11-11 | Plunger type pulverized coal pressurized conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994616.4A CN106516752B (en) | 2016-11-11 | 2016-11-11 | Plunger type pulverized coal pressurized conveying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106516752A true CN106516752A (en) | 2017-03-22 |
| CN106516752B CN106516752B (en) | 2024-05-28 |
Family
ID=58350713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610994616.4A Active CN106516752B (en) | 2016-11-11 | 2016-11-11 | Plunger type pulverized coal pressurized conveying device |
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| Country | Link |
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| CN (1) | CN106516752B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356600A (en) * | 2019-07-10 | 2019-10-22 | 李宝婕 | A kind of charging dust guard of racking machine |
| CN111792382A (en) * | 2019-04-09 | 2020-10-20 | 航天长征化学工程股份有限公司 | Multi-piece plunger type powder pressurizing and conveying device |
| CN114029203A (en) * | 2021-11-19 | 2022-02-11 | 潍坊联威机械有限公司 | Pipe fitting undercoating negative pressure production facility |
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