CN110433974A - A kind of Multifunctional supporting agent injection film covering device - Google Patents
A kind of Multifunctional supporting agent injection film covering device Download PDFInfo
- Publication number
- CN110433974A CN110433974A CN201910831807.2A CN201910831807A CN110433974A CN 110433974 A CN110433974 A CN 110433974A CN 201910831807 A CN201910831807 A CN 201910831807A CN 110433974 A CN110433974 A CN 110433974A
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- Prior art keywords
- overlay film
- film slot
- slot
- flow container
- covering device
- Prior art date
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- Pending
Links
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 20
- 238000002347 injection Methods 0.000 title claims description 19
- 239000007924 injection Substances 0.000 title claims description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 239000003814 drug Substances 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 10
- 230000009466 transformation Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000006004 Quartz sand Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003599 detergent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/10—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to temperature or viscosity of liquid or other fluent material discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/20—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising
- B05B15/25—Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising using moving elements, e.g. rotating blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
- C09K8/805—Coated proppants
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a kind of Multifunctional supporting agent to spray film covering device, including controller, medicament ejector mechanism, overlay film slot and rabbling mechanism, the motor of the rabbling mechanism is fixedly mounted on overlay film slot side, stirring host's body of rabbling mechanism is arranged in overlay film slot and is rotated by motor drive, the medicament ejector mechanism will be in medical liquid spraying to overlay film slot, overlay film slot top is equipped with overlay film slot feed inlet, lower part is equipped with overlay film slot discharge port, and the controller passes through cable connection medical liquid spraying mechanism, overlay film slot and rabbling mechanism.Overlay film transformation of any type proppant in different function requirements may be implemented in the present invention, stirring net mechanism is cooperated using atomizing medicament ejector mechanism, the preparation of only novel and multifunctional proppant provides appointed condition, the preparation flow for also simplifying overlay film proppant simultaneously, optimizes the output yield rate of overlay film proppant.
Description
Technical field
The present invention relates to a kind of Multifunctional supporting agent to spray film covering device, belongs to the hydraulic fracturing in oilfield exploitation procedure
Technical field.
Background technique
Hydraulic fracturing is a big important measures of oil gas field storey increase design at this stage.In general, the technology is using before high pressure
It sets liquid and forms one or more man-made fracture in target reservoir in advance, then proppant is laid down into man-made fracture by load fluid
In, ultimately form the oil and gas flow predominant pathway with certain flow conductivity.
Proppant as one of vital material of pressing crack construction, when in use usually according to the difference of performance requirement and
There is a different type selectings, conventional performance requirement mainly has that proppant density is low, compression strength is high, sphericity is high, size distribution is equal
It is even etc..Quartz sand, haydite, overlay film proppant, porous propping agent on the market etc. have in the respective performance scope of application
Good performance.But with the iterative method and the demand taped the latent power of old oil- and gas-field of the exploitation of unconventional oil and gas field, to pressure break on scene
Storey increase design is put forward new requirements, single for proppant, and people generally wish that stratum and length can be goed deep by playing proppant
The advantage that phase contacts with formation fluid is realized from source by carrying out a degree of transformation to proppant to oil-gas mining
The prevention and control of the problems such as shaking out in journey, water breakthrough, wax deposition, fouling, wettability reversal.However exist at present for the purpose of proppant overlay film
In making conventional proppants surface coat one layer of resin film to reduce the density of proppant, other functions of overlay film are not referred to, and
Raw material is quartz sand or haydite, and for emerging porous propping agent, they have big difference in specific surface area, for most
Whole overlay film effect can generate extreme influence.
Due to existing industrialization overlay film proppant preparation facilities be only able to achieve it is (close in simple function to quartz sand or haydite
Degree) on overlay film transformation, and mostly liquid consolidates hybrid reaction, and medicament addition manner is difficult to realize the uniform overlay film to proppant, and
Laboratory overlay film proppant preparation facilities is complicated for operation, the degree of automation is low, preparation amount is few, therefore significantly limits multi-functional
The test preparation and extensive use of overlay film proppant.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, providing a kind of Multifunctional supporting agent injection overlay film
Device, structure are simple, full-featured, easily operated.
The technical solution adopted by the present invention is that such:
A kind of Multifunctional supporting agent injection film covering device, including controller, medicament ejector mechanism, overlay film slot and blender
Structure, the motor of the rabbling mechanism are fixedly mounted on overlay film slot side, and stirring host's body of rabbling mechanism is arranged in overlay film slot
Interior and rotated by motor drive, by medical liquid spraying to overlay film slot, overlay film slot top is equipped with for the medicament ejector mechanism
Overlay film slot feed inlet, lower part be equipped with overlay film slot discharge port, the controller by cable connection medical liquid spraying mechanism, overlay film slot and
Rabbling mechanism.
By adopting the above-described technical solution, the beneficial effects of the present invention are:
1) any type proppant (quartz sand, haydite, overlay film proppant, porous propping agent etc.) may be implemented in different function
Overlay film transformation on capable of requiring cooperates stirring net mechanism, not only low-density, sand control, control using atomizing medicament ejector mechanism
The preparation of the novel and multifunctional proppants such as water, wax control, antiscale, anti-wettability reversal provides appointed condition, while also simplifying and covering
The preparation flow of film proppant optimizes the output yield rate of overlay film proppant；
2) connection medical liquid spraying mechanism, overlay film slot and rabbling mechanism are monitored and are adjusted using controller, guarantee system
Standby simplicity and automation.
Preferably, the medical liquid spraying mechanism includes flow container A, flow container B, air compressor machine, injection spray pipe and nozzle, the pneumatics
Medical fluid in flow container A and flow container B is ejected into overlay film slot by injection spray pipe and nozzle with mist by machine.The charging of overlay film slot
Mode is simple, and midway spike mode is easy, and the air compressor machine of cooperation medicine company injection equipment sprays high-speed air, realizes overlay film proppant
The quick discharging of finished product.The flow container that clear water and detergent can also be filled by introducing in medicament ejector mechanism, is realized to device
High-efficiency cleaning.
Preferably, the flow container A, flow container B and air compressor machine are fixedly mounted on overlay film slot side, the nozzle, which is mounted on, to be covered
Film groove top portion.
Preferably, the nozzle has several, the injection spray pipe is separately connected flow container A, flow container B and difference by branch pipe
Valve is installed on every branch pipe.The flow container can be two, can also be configured according to actual needs to be multiple.It is logical
The switch control to each branch pipe valve is crossed, the feed liquor injection of single flow container may be implemented, being mixed into for more flow containers also may be implemented
Liquid injection.The spraying when particular number of nozzle is according to preparation requires to carry out quantity increase and decrease or mouth diameter is replaced.
Preferably, the overlay film slot includes steel construction inside and outside overlay film slot bracket and overlay film slot, steel inside and outside the overlay film slot
Structure is mounted on overlay film slot bracket and adding thermal resistance silk screen and insulating layer is arranged between ectonexine steel construction.
Preferably, overlay film groove top portion sets top observation window, overlay film slot side sets side observation window.Top observation window
It is respectively mounted transparent toughened glass with side observation window, facilitates and observes overlay film slot inner case through observation window whole process.
Preferably, also setting up temperature sensor, temperature sensor between the ectonexine of steel construction inside and outside the overlay film slot
The temperature data of acquisition is transferred to controller, the heating power of adding thermal resistance silk screen is adjusted in controller, realizes in slot
Operating temperature is within the scope of 25 DEG C -250 DEG C.The inside and outside steel construction of overlay film slot design when should meet high temperature resistant, anticorrosion and
The performance requirement of abrasive resistant.
Preferably, stirring host's body both ends are equipped with stirring net baffle.The stirring host body can be according to preparation branch
The Particle size requirements for supportting agent replace mesh mesh number, are slightly less than proppant partial size.Stirring host's body turns along clockwise direction
It is dynamic, realize overturning and drive to proppant.
In above-mentioned technical proposal, the rabbling mechanism described in the overlay film stage will be real with medicament ejector mechanism cooperating
(wire side becomes smaller with jet face contact area from small become larger again when rolling on wire side for now stirring host's body drive portion sub-support agent
Entire rotary course) injection overlay film.
In above-mentioned technical proposal, the overlay film slot feed inlet and overlay film slot discharge outlet of the overlay film slot are equipped with easy to disassemble
Seal closure, convenient for charging and finished product collect.The upper top cover of overlay film slot can also be achieved quick disassembly, replace to internal components
Or maintenance.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is right view of the invention；
Fig. 3 is top view of the invention；
Fig. 4 is the front view that the rabbling mechanism for being is marked in the present invention；
Fig. 5 is the right view for the stirring net that label is in the present invention.
Marked in the figure:
1 is controller, and 2 be medicament ejector mechanism, and 3 be overlay film slot, and 4 be rabbling mechanism；
2-1 is flow container A, and 2-2 is flow container B, and 2-3 is air compressor machine, and 2-4 is injection spray pipe, and 2-5 is nozzle；
3-1a is overlay film slot bracket, and 3-1b is adding thermal resistance silk screen and insulating layer, and 3-1c is steel construction inside and outside overlay film slot, 3-
2 be overlay film slot feed inlet, and 3-3 is overlay film slot discharge port, and 3-4a is side observation window, and 3-4b is top observation window；
4-1 is motor, and 4-2a is stirring host's body, and 4-2b is stirring net baffle.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
Embodiment:
As shown in Figure 1,2,3, 4, film covering device, including controller 1, medicament ejector mechanism are sprayed in a kind of Multifunctional supporting agent
2, overlay film slot 3 and rabbling mechanism 4, the motor 4-1 of the rabbling mechanism 4 are fixedly mounted on 3 side of overlay film slot, rabbling mechanism 4
Stirring host's body 4-2a be arranged in overlay film slot 3 and driven by motor 4-1 and rotate, the medicament ejector mechanism 2 is by medical fluid
It is ejected into overlay film slot 3,3 top of overlay film slot is equipped with overlay film slot feed inlet 3-2, and lower part is equipped with overlay film slot discharge port 3-3, institute
It states controller 1 and passes through cable connection medical liquid spraying mechanism 2, overlay film slot 3 and rabbling mechanism 4.The overlay film slot of the overlay film slot 3 is fed
Seal closure easy to disassemble is equipped at mouth 3-2 and overlay film slot discharge port 3-3.
The medical liquid spraying mechanism 2 includes flow container A2-1, flow container B2-2, air compressor machine 2-3, injection spray pipe 2-4 and nozzle 2-5,
The air compressor machine 2-3 sprays the medical fluid in flow container A2-1 and flow container B2-2 by injection spray pipe 2-4 and nozzle 2-5 with mist
Into overlay film slot 3.
The flow container A2-1, flow container B2-2 and air compressor machine 2-3 are fixedly mounted on 3 side of overlay film slot, the nozzle 2-5 installation
At 3 top of overlay film slot.
The nozzle 2-5 has several, and the injection spray pipe 2-4 is separately connected flow container A2-1, flow container B2-2 simultaneously by branch pipe
Valve is installed on every branch pipe respectively.
The overlay film slot 3 includes steel construction 3-1c inside and outside overlay film slot bracket 3-1a and overlay film slot, steel inside and outside the overlay film slot
Structure 3-1c is mounted on overlay film slot bracket 3-1a and adding thermal resistance silk screen and insulating layer 3- is arranged between ectonexine steel construction
1b。
Top observation window 3-4b is set at the top of the overlay film slot 3,3 side of overlay film slot sets side observation window 3-4a.
Temperature sensor is also set up inside and outside the overlay film slot between the ectonexine of steel construction 3-1c, temperature sensor will acquire
Temperature data be transferred to controller 1, the heating power of adding thermal resistance silk screen is adjusted in controller 1.
The stirring host both ends body 4-2a are equipped with stirring net baffle 4-2b, as shown in Figure 5.
Application method of the invention, comprising the following steps:
(1) checking ensures that apparatus of the present invention installation is complete, and each electrical equipment works well；
(2) seal closure for unscrewing overlay film slot feed inlet 3-2, the proppant of precalculated dosage is added into overlay film slot 3,
Screw the seal closure of overlay film slot feed inlet 3-2；
(3) it begins to warm up resistive heater by controller 1 and sets corresponding heating temperature, also pass through controller
1 unlatching rabbling mechanism 4 simultaneously sets speed of agitator, while opening time switch, records preheating time；
(4) in proppant warm-up phase, configured overlay film medicament is packed into flow container A 2-1 and flow container B2-2, and set
The jet velocity of good each liquid；
(5) by the control to valve on two branch pipes, it can be achieved that A liquid, B liquid mixing jetting or spraying respectively；It is suitable to temperature
Preferably and after stablizing, suitable speed of agitator is adjusted, it is corresponding to open flow container A 2-1, flow container B 2-2 by the overlay film process that early period formulates
Valve, start to carry out overlay film transformation to proppant, while paying close attention to timing display, record the time started；
(6) the overlay film situation in continuous observation overlay film slot 3, after the completion of overlay film, temperature in adjustment tank as needed, if needing
Accelerate cooling, the seal closure of overlay film slot feed inlet 3-2 can be opened, and continue by air compressor machine 2-3 under the premise of safety and environmental protection
The jet drying air into slot；
(7) adjust the revolving speed of agitating device 4 to low speed, open the seal closure of overlay film slot discharge port 3-3, with container collection at
Product can continue through air compressor machine 2-3 jet drying air into slot under the premise of safety and environmental protection if need to accelerate to discharge；
(8) clear water or corresponding detergent are added into flow container A 2-1, overlay film slot 3 is carried out clearly by nozzle spray patterns
It is clean and dry, finally close respective electric equipment.
It, can if solid chemicals or other medicaments that should not be added using spray regime need to be added in midway into overlay film slot 3
Under the premise of guaranteeing safety and environmental protection, the seal closure of overlay film slot feed inlet 3-2 is unscrewed, specified medicament is added into overlay film slot 3, then
Screw the seal closure of overlay film slot feed inlet 3-2.
If apparatus of the present invention cause the inside of overlay film slot 3 any problem occur during operation, can be observed by top
Window 3-4b and side observation window 3-4a have found in time, and the upper cover plate of overlay film slot 3 is fixed for bolt, can be dismantled when necessary,
To repair internal component.
Claims (8)
1. film covering device is sprayed in a kind of Multifunctional supporting agent, it is characterised in that: including controller (1), medicament ejector mechanism (2),
Overlay film slot (3) and rabbling mechanism (4), the motor (4-1) of the rabbling mechanism (4) are fixedly mounted on overlay film slot (3) side, stir
Stirring host body (4-2a) setting of mechanism (4) is mixed in overlay film slot (3) and is driven by motor (4-1) and is rotated, the medicament
For injection equipment (2) by medical liquid spraying to overlay film slot (3), overlay film slot (3) top is equipped with overlay film slot feed inlet (3-2), under
Portion be equipped with overlay film slot discharge port (3-3), the controller (1) by cable connection medical liquid spraying mechanism (2), overlay film slot (3) and
Rabbling mechanism (4).
2. film covering device is sprayed in Multifunctional supporting agent according to claim 1, it is characterised in that: the medical liquid spraying mechanism
It (2) include flow container A (2-1), flow container B (2-2), air compressor machine (2-3), injection spray pipe (2-4) and nozzle (2-5), the air compressor machine (2-
3) medical fluid in flow container A (2-1) and flow container B (2-2) is ejected by injection spray pipe (2-4) and nozzle (2-5) with mist
In overlay film slot (3).
3. film covering device is sprayed in Multifunctional supporting agent according to claim 2, it is characterised in that: the flow container A (2-1),
Flow container B (2-2) and air compressor machine (2-3) are fixedly mounted on overlay film slot (3) side, and the nozzle (2-5) is mounted on overlay film slot (3) top
Portion.
4. film covering device is sprayed in Multifunctional supporting agent according to claim 2 or 3, it is characterised in that: the nozzle (2-5)
There are several, the injection spray pipe (2-4) by branch pipe is separately connected flow container A (2-1), flow container B (2-2) and respectively in every branch pipe
Upper installation valve.
5. film covering device is sprayed in Multifunctional supporting agent according to claim 1, it is characterised in that: overlay film slot (3) packet
Steel construction (3-1c) inside and outside overlay film slot bracket (3-1a) and overlay film slot is included, steel construction (3-1c), which is mounted on, inside and outside the overlay film slot covers
Adding thermal resistance silk screen and insulating layer (3-1b) are set on film slot bracket (3-1a) and between ectonexine steel construction.
6. film covering device is sprayed in Multifunctional supporting agent according to claim 1 or 5, it is characterised in that: the overlay film slot (3)
Top sets top observation window (3-4b), and overlay film slot (3) side sets side observation window (3-4a).
7. film covering device is sprayed in Multifunctional supporting agent according to claim 5, it is characterised in that: steel inside and outside the overlay film slot
Temperature sensor is also set up between the ectonexine of structure (3-1c), the temperature data of acquisition is transferred to controller by temperature sensor
(1), the heating power of adding thermal resistance silk screen is adjusted in controller (1).
8. film covering device is sprayed in Multifunctional supporting agent according to claim 1, it is characterised in that: stirring host's body
The both ends (4-2a) are equipped with stirring net baffle (4-2b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831807.2A CN110433974A (en) | 2019-09-04 | 2019-09-04 | A kind of Multifunctional supporting agent injection film covering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831807.2A CN110433974A (en) | 2019-09-04 | 2019-09-04 | A kind of Multifunctional supporting agent injection film covering device |
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| Publication Number | Publication Date |
|---|---|
| CN110433974A true CN110433974A (en) | 2019-11-12 |
Family
ID=68439154
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| CN201910831807.2A Pending CN110433974A (en) | 2019-09-04 | 2019-09-04 | A kind of Multifunctional supporting agent injection film covering device |
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| CN108404777A (en) * | 2018-03-07 | 2018-08-17 | 中山大学 | It is a kind of can overlay film multifunctional stirring device |
| CN209333593U (en) * | 2018-11-06 | 2019-09-03 | 纽绥笙特殊医用食品江苏有限公司 | Dispensing equipment is used in a kind of processing of solid beverage |
| CN109589888A (en) * | 2018-11-19 | 2019-04-09 | 北京大学 | A kind of device and preparation method thereof preparing overlay film proppant |
| CN211070512U (en) * | 2019-09-04 | 2020-07-24 | 西南石油大学 | Multifunctional propping agent spraying and film coating device |
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