CN207035769U - Vertical drying screens tower - Google Patents

Vertical drying screens tower Download PDF

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Publication number
CN207035769U
CN207035769U CN201720640025.7U CN201720640025U CN207035769U CN 207035769 U CN207035769 U CN 207035769U CN 201720640025 U CN201720640025 U CN 201720640025U CN 207035769 U CN207035769 U CN 207035769U
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tower
warm
air pipe
collar tie
hot
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CN201720640025.7U
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郭大军
郭宪录
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Baotou Yifeng building materials admixture Co., Ltd
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郭大军
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Abstract

The utility model discloses a kind of vertical drying to screen tower, including tower body, hot air duct, sieve plate, cloth slide carriage, hot air duct, sieve plate, cloth slide carriage are arranged on inside tower body, and cloth slide carriage is arranged on above grid section;Tower body is provided with charging aperture and exhaust outlet at top, and bottom is provided with discharging opening;Hot air duct includes center warm-air pipe, longitudinal warm-air pipe, hot blast cant beam;Center warm-air pipe, longitudinal warm-air pipe, hot blast cant beam are provided with hot blast hole, and grid section, hot blast cant beam are fixed between inner ring collar tie beam, outer shroud collar tie beam, and hot blast cant beam is connected with longitudinal warm-air pipe, center warm-air pipe;More longitudinal warm-air pipes are fixed on the inner or outer side of inner and outer ring collar tie beam, and longitudinal warm-air pipe is closed at both ends, longitudinal hot blast bottom of the tube stretch out and support on the ground, inner ring longitudinal direction hot blast bottom of the tube stretches out and supported on the ground by the first hot bellows;The utility model Uniform Ventilation, drying rate is fast, and cost is low.

Description

Vertical drying screens tower
Technical field
A kind of drying plant is the utility model is related to, specifically, is related to a kind of vertical drying screening tower.
Background technology
Traditional vertical drying tower operation principle is:Wet moulded coal is input in tower body, then appropriate heat is passed through into tower body Wind, using Hot-blast Heating, take away moisture, but it is uneven to divulge information, crushing rate is high, has a strong impact on production cost and quality, powder it is more and Not environmentally.But small, simple to operate compared to horizontal chained drying baker fund input, cost is low, take up an area less, so largely being made With.More porous upright column formula wind-distributing pipes are erect in its tower body of traditional vertical drying tower, in charging aperture by wet stock by upper vertical used Under, lower floor's material in tower body is carry the pressure of all upper materials, to tower in material crushing than high, yield rate is low.Also by Serious in the broken clogged up with material ventilation of unreasonable structure, press-powder, stewing steaming phenomenon, temperature-controllable is poor, easily occurs to burn and damage Equipment breakdown, drying effect is poor, production capacity is low.It is uneven along with divulging information due to the bad control of temperature in tower, tend to cause Moulded coal ignition, and the energy consumption in drying course is higher.
Utility model content
The technical problem that the utility model solves is to provide a kind of vertical drying screening tower, Uniform Ventilation, drying rate It hurry up, cost is low.
Technical scheme is as follows:
A kind of vertical drying screens tower, including tower body, hot air duct, sieve plate, cloth slide carriage, hot air duct, sieve plate, cloth Slide carriage is arranged on inside tower body, and cloth slide carriage is arranged on above grid section;Tower body is provided with charging aperture and exhaust outlet, bottom at top It is provided with discharging opening and supporting leg;Hot air duct includes center warm-air pipe, longitudinal warm-air pipe, hot blast cant beam, and hot blast cant beam is with indulging It is connected to warm-air pipe, center warm-air pipe, center warm-air pipe, longitudinal warm-air pipe, hot blast cant beam are provided with hot blast hole, and hot air duct leads to Piping connects pressure fan;Sieve plate includes inner ring collar tie beam, outer shroud collar tie beam, grid section and sieve groove;Grid section, hot blast cant beam are fixed on inner ring Between collar tie beam and outer shroud collar tie beam, sieve groove is between two grid sections;Longitudinal warm-air pipe is fixed on the inner side or outer of inner and outer ring collar tie beam Side, longitudinal warm-air pipe is closed at both ends, and longitudinal hot blast bottom of the tube is extended downwardly and supported on the ground, and longitudinal hot blast bottom of the tube passes through Second hot bellows stretch out and supported on the ground;Cloth slide carriage is fixed on the warm-air pipe of center.
Further:The outer wall bottom section of tower body is provided with the first hot bellows, and the first hot bellows inner side and the outer wall of tower body are connected to Together and by cinclides in being connected in tower;Tower bottom is provided with the second hot bellows, the top of the second hot bellows and longitudinal warm-air pipe Bottom communicates, and exhaust outlet connects air-introduced machine by pipeline;First hot bellows, the second hot bellows connect pressure fan by pipeline, the One hot bellows, the air inlet of the second hot bellows are provided with control valve;Longitudinal warm-air pipe extends downwardly through the second hot bellows And support on the ground.
Further:Second hot bellows connect the bottom of longitudinal warm-air pipe, and hot blast cant beam connects longitudinal warm-air pipe, sieve plate with tiltedly The angle of inclination of beam is between 15-45 degree.
Further:Three layer screen plate is provided with below charging aperture inside tower body, the first cloth is provided with above first layer sieve plate Expect slide carriage, the first cloth slide carriage is fixed on the whippletree above charging aperture by lifting bolt;The top of second layer sieve plate is set There is the second cloth slide carriage, the second cloth slide carriage is fixed on longitudinal warm-air pipe or center warm-air pipe.
Further:The both ends of first grid section are connected on inner ring collar tie beam and outer shroud collar tie beam, and inner collar deck-molding is in outer shroud Collar tie beam, the first grid section gradually broaden from inner ring collar tie beam to the width in outer shroud collar tie beam direction;First chute is located at two the first grid sections Between, the first chute is up-narrow and down-wide, and the width from inner ring collar tie beam to outer shroud collar tie beam direction gradually broadens;The both ends of second grid section point Be not connected between inner ring collar tie beam and outer shroud collar tie beam, and external toroidal ring deck-molding is in inner ring collar tie beam, the second grid section from outer shroud collar tie beam to The width in inner ring collar tie beam direction gradually broadens, the second chute between two the second grid sections, the second chute from outer shroud collar tie beam to The width in inner ring collar tie beam direction gradually broadens.
Further:Fines recovering hopper or the second discharging mouth of pipe are provided between second layer sieve plate and third layer sieve plate.
Further:For longitudinal hot blast bottom of the tube as supporting leg, supporting leg is provided with gravimetric tilt automatic opener.
Further:Center warm-air pipe it is closed at both ends, tower body is provided with observation door in sidepiece;Tower body is inside and outside to be provided with Temperature controller.
Further:The grid section or slide carriage of at least one layer of sieve plate can multistage set, and epimere discharge end is higher than hypomere feed end.
Compared with prior art, the utility model technique effect includes:
1st, energy-conservation, efficient, environmental protection, reduction press-powder are broken.Automatic screening difference separation need to dry and without material drying, energy-conservation Efficiently, production capacity is improved;Ventilation performance is good, prevents vexed steaming, reduces crushing rate, high yield rate;Unpowered downslide, production, fortune Row cost is low;Tower is fully wrapped around wherein by material with discharging opening, and fully closed dust elimination is not only to strengthen environmental protection, simultaneously Also act energy-saving effect.
2nd, ventilation, cloth performance are good, and drying rate is fast.Sieve plate cloth is uniform, Uniform Ventilation, and drying amount is big, drying rate It hurry up.
3rd, grid section sieve plate is firm wear-resisting, corrosion-resistant, and service life is long, high temperature resistant, is not afraid of and pounds, load-bearing is big, and gap scene can Adjust, ventilated cloth thermal effect is good, and the hot air inducing of cloth is smooth, and floor space is small, easy to operate, saves raw material, does not get stuck, not material folding, subtract Few batch mixing, easily transport, easy to install, temperature is easily observed.
4th, more than 50% is reduced compared to horizontal, chain type drying plant energy-conservation 50% or so, cost investment;Drying screening one Machine, practical, investment is small, and efficiency high, energy consumption is low, and cost is low.
5th, solve the problems, such as that powder separates drying with granule materials or only screened not drying, the separation of discharging opening thickness material.Thick material Drying is moved along sieve plate lower, fine powder waste material is rejected in front end, and drying rate is fast,
6th, can the material without drying small to humidity directly carry out thickness Classification of materials, to high humidity, hardened material Vibration on Start-up device, driving material are moved ahead, and realization is slipped and the complementary anti-blocking anti-sticking of vibrations.
7th, material is able to dry in sieve and banking motion moves ahead along grid section, extends drying path, drying effect It is good.Sieve plate is obliquely installed using electric power is small, power saving.
8th, dry, screen it is dual-purpose.The minus mesh of first layer sieve plate or second layer sieve plate falls into third layer reverse frustoconic slotless Slide carriage and the second discharging opening;Just realize that oversize is classified in minus mesh, further improve production capacity, avoid batch mixing, improve product matter Amount.Kill two birds with one stone.Or it is independently used for granule materials sifting sort.
Brief description of the drawings
Fig. 1 is the structural representation of vertical drying screening tower in the utility model;
Fig. 2 is the structural representation of support member in the utility model.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to embodiment set forth herein;On the contrary, these embodiments are provided so that this practicality is new The design of example embodiment more comprehensively and completely, and is comprehensively communicated to those skilled in the art by type.
As shown in figure 1, it is the structural representation of vertical drying screening tower in the utility model;As shown in Fig. 2 it is this practicality The structural representation of new middle support member.
Vertical drying screens tower, and using grid section cloth, drying, screening, its structure includes:Tower body, hot air duct, sieve plate, Cloth slide carriage;Hot air duct, sieve plate, cloth slide carriage are arranged on inside tower body, and cloth slide carriage is arranged on above grid section.
The top of tower body is circular platform type, and middle part is cylindrical type, and bottom is rounding bench-type, and tower body is provided with charging aperture at top 11 and multiple exhaust outlets 12, charging aperture 11 be located at center, exhaust outlet 12 is located at the outside of charging aperture 11.Tower body is opened in sidepiece There is observation door 13, entering inside tower body during for overhauling.Tower body is provided with the first hot bellows 15 in side wall, is provided with out in bottom The hot bellows 19 of material mouth 14 and second.Discharging opening 14 is provided with vibrator 16.The bottom of discharging opening 14 is provided with conveyer belt 17.Row Air port 12 connects air-introduced machine by pipeline.
Hot air duct includes:Center warm-air pipe 21, longitudinal warm-air pipe 22, hot blast cant beam 25;Center warm-air pipe 21, longitudinal direction heat Airduct 22, hot blast cant beam 25 are provided with hot blast hole 24.Sieve plate is in platform shape, and its structure includes:Inner ring collar tie beam 31, outer shroud collar tie beam 32, comb Bar, grid section (including the first grid section 33, second grid section 36), hot blast cant beam 25 are fixed between inner ring collar tie beam 31, outer shroud collar tie beam 32, Hot blast cant beam 25 is connected with longitudinal warm-air pipe 22, center warm-air pipe 21.Hot air duct connects pressure fan by pipeline.
First hot bellows 15, the second hot bellows 19 are connected to hot air duct front end, the first hot bellows 15, the second hot bellows 19 Pressure fan is connected by pipeline, external first hot bellows 15 of tower, the entrance of the second hot bellows 19 are provided with the big ditty of heat supply Valve is saved, the effect of the first hot bellows 15, the second hot bellows 19 is to avoid wind-force decompression and inequality.In the present embodiment, the second heat Bellows 19 are connected to the bottom of longitudinal warm-air pipe 22;Longitudinal one section of 22 bottom of warm-air pipe is used as supporting leg, and supporting leg is provided with row Ash door 18, for clearing up the interior dust stratification of longitudinal warm-air pipe 22, hot blast cant beam 25;Grid section, hot blast cant beam 25 are arranged on inner ring collar tie beam 31st, the top of outer shroud collar tie beam 32;Grid section is by welding or being articulated in the top of inner ring collar tie beam 31, outer shroud collar tie beam 32.
More longitudinal warm-air pipes 22 are fixed on the outside of outer shroud collar tie beam 32, and longitudinal warm-air pipe 22 is closed at both ends, and bottom is outside Extend and support on the ground, hot blast hole 24 is provided with the tube wall of longitudinal inner side of warm-air pipe 22.The top envelope of center warm-air pipe 21 Close, lower end is connected on longitudinal warm-air pipe 22 by hot blast cant beam 25, and hot blast hole 24 is provided with the tube wall of center warm-air pipe 21.
In the present embodiment, the lower section of tower body inside charging aperture 11 is provided with three layer screen plate, and (profile is truncated cone-shaped, and sieve plate can be Multilayer, the first sieve plate or the second sieve plate bottom may be provided with minus mesh recovering hopper), the structure of first layer sieve plate and second layer sieve plate It is identical.The first cloth slide carriage 35 (being shaped as taper) is provided with above first layer sieve plate, the first cloth slide carriage 35 passes through lifting Bolt 39 is fixed on the whippletree of the top of charging aperture 11;The second cloth slide carriage 38, the second cloth are provided with above second layer sieve plate Material slide carriage 38 is fixed on longitudinal warm-air pipe 22.First cloth slide carriage 35 adjusts first layer by the nut on the whippletree of charging aperture 11 The gap of sieve plate feed end, gap increase the increase of its material pressure, and for the feed increase of second layer sieve plate, gap reduces second layer sieve Plate feed is reduced.Fines recovering hopper or the second discharging mouth of pipe are provided between second layer sieve plate and third layer sieve plate.
In first layer sieve plate and second layer sieve plate, the both ends of multiple first grid sections 33 are connected to inner ring collar tie beam 31 and outer Between ring beam 32, and inner ring collar tie beam 31 is higher than outer shroud collar tie beam 32, and the first grid section 33 is from inner ring collar tie beam 31 to outer shroud collar tie beam 32 Width gradually broaden;First chute 34 is between two the first grid sections 33, and the first chute 34 is up-narrow and down-wide, from inner ring collar tie beam The width of 31 to outer shroud collar tie beam 32 gradually broadens.
In third layer sieve plate, the both ends of multiple second grid sections 36 be connected to inner ring collar tie beam 31 and outer shroud collar tie beam 32 it Between, and outer shroud collar tie beam 32 is higher than inner ring collar tie beam 31, and the second grid section 36 is gradual to the width of inner ring collar tie beam 31 from outer shroud collar tie beam 32 Broaden, Breadth Maximum is less than required material drying particle diameter;Second chute 37 is between two the second grid sections 36, the second chute 37 Width from outer shroud collar tie beam 32 to the direction of inner ring collar tie beam 31 gradually broadens.Further, it is possible to third layer grid section is replaced by funnel With minus mesh discharging opening, the minus mesh of first layer sieve plate or second layer sieve plate falls into funnel and minus mesh discharging opening;Minus mesh goes out The bottom of material mouth sets discharging belt conveyer.To realize that oversize is classified in minus mesh, production capacity is further improved, avoids batch mixing, is carried High yield quality.If the lower oversize classification of sieve need not can not also be set third layer, to overcome crushing, boil in a covered pot over a slow fire and steam drawback, be improved Efficiency.
This drying screening tower can be by material, batch mixing in the case of not drying, for various granule materials sifting sorts.
Wet moulded coal is input in tower body through charging aperture 11, wet moulded coal is spread into the first grid section through the first slide carriage 35 33, hot blast through hot blast hole 24 is dried for the first time, and moulded coal slide downward and arrives downstairs in the first chute 34 under gravity On next layer of the first grid section 33;Moulded coal drops to the second slide carriage 38 on next layer of the first grid section 33 after second of drying On, slided on the second grid section 36, drop to the discharging opening 14 of bottom from the second chute 37 after third time is dried.
Hot blast is using the waste heat of boiler tail gas that flue gas is provided of drying, and this is a kind of preferable hot air source, and it is without attached Add production cost, moulded coal is to take multi-laminate to lay along short transverse, therefore the vertical drying screening small volume of tower floor space is big.
After moulded coal drying manually or automatically, the vibratory tray vibration blowing of control discharging opening 14.Release every time The moulded coal of 200mm or so floor heights, is exported through discharging belt conveyer.Fresh moulded coal is automatically replenished feeding feed bin by charging belt machine again It is interior, it is achieved thereby that the continuously upper and lower material automation of whole equipment system.Charging, the discharging of equipment are conveyed using belt feeder, By continuous feed, discontinuously discharge in a manner of make whole production line realize automation control.
EAT and intake volume:The EAT and intake volume of vertical drying screening tower are in whole drying course Key index.
Screening, one tower of drying integrate, and can also be independently used for sieving, be set under second layer sieve plate, on third layer sieve plate There are fines recovering hopper and discharging opening.Oversize discharging opening and minus mesh discharging opening are formed respectively, are respectively set in the bottom of discharging opening There is a conveyer belt.The grid section or slide carriage of at least one layer of sieve plate can multistage set, and epimere discharge end is higher than hypomere feed end.
1st, intake volume.
The vertical drying screening tower of different size model has different air quantity, a wind pressure index, is provided during onsite application Hot blast should meet design requirement, should make the current value of the blower fan close to load current value.Otherwise baking not dry and yield drop occurs Low phenomenon.The blower fan of X5-48 types, air volume motors work(between its 90000~120000m3/h are generally adopted by present Rate 90KW.Powerful hot-blast pressure makes moulded coal produce some dust in motion process in tower body to be not easy to scab on inwall, Overall material moves down, and will not produce retentate and cause and catch fire.Wind Volume, low temperature gas is used to enter by facts have proved Wind method, it can more effectively play quick-drying effect.
2nd, EAT.
It should be controlled using boiler exhaust gas heat supply temperature between 140~1500C, temperature is too high to cause moulded coal to catch fire combustion Burn, too low, moulded coal is not oven-dried and (allows the short time to reach 180 DEG C if wind is boiler exhaust gas originally).Exporting general temperature should control System, because when occurring empty at the top of tower body (material in the storehouse is released too much, and cavity occurs in its silo roof), is entered less than 50 DEG C The hot blast of mouth walks short circuit, when directly being overflowed from silo roof, then Ignition Phenomena easily occurs.Vertical drying screening tower has temperature inspection Measuring point, for detecting outlet temperature, its normal value should between 40 DEG C~50 DEG C the (temperature if being originally boiler exhaust gas if wind herein This numerical value is allowed more than, but must not exceed its inlet temperature).It facts have proved that control outlet wind-warm syndrome, completely can be with below 50 DEG C Avoid moulded coal ignition in storehouse.
In drying course, the improper spontaneous combustion for easily causing moulded coal of temperature control.In order to prevent continuous high temperature in tower body, in tower Temperature-control alarm is set in vivo, when temperature exceedes in setting value, system can close hot blast automatically, and moulded coal integrally moves down automatically, So that burning-point of the temperature away from coal in storehouse.
Term used in the utility model is explanation and exemplary and nonrestrictive term.Due to the utility model energy It is enough to be embodied in a variety of forms without departing from the spiritual or substantive of utility model, it should therefore be appreciated that above-described embodiment is unlimited It in any foregoing details, and should widely be explained in the spirit and scope that appended claims are limited, therefore fall into power Whole changes and remodeling in profit requirement or its equivalent scope all should be appended claims and covered.

Claims (9)

1. a kind of vertical drying screens tower, it is characterised in that:Including tower body, hot air duct, sieve plate, cloth slide carriage, hot air duct, Sieve plate, cloth slide carriage are arranged on inside tower body, and cloth slide carriage is arranged on above grid section;Tower body is provided with charging aperture and row at top Air port, bottom are provided with discharging opening and supporting leg;Hot air duct includes center warm-air pipe, longitudinal warm-air pipe, hot blast cant beam, hot blast Cant beam is connected with longitudinal warm-air pipe, center warm-air pipe, and center warm-air pipe, longitudinal warm-air pipe, hot blast cant beam are provided with hot blast hole, heat Wind pipeline connects pressure fan by pipeline;Sieve plate includes inner ring collar tie beam, outer shroud collar tie beam, grid section and sieve groove;Grid section, hot blast cant beam are consolidated It is scheduled between inner ring collar tie beam and outer shroud collar tie beam, sieve groove is between two grid sections;Longitudinal warm-air pipe is fixed on inner and outer ring collar tie beam Inner or outer side, longitudinal warm-air pipe is closed at both ends, and longitudinal hot blast bottom of the tube is extended downwardly and supported on the ground, and cloth slide carriage is consolidated It is scheduled on the warm-air pipe of center.
2. vertical drying as claimed in claim 1 screens tower, it is characterised in that:The outer wall bottom section of tower body is provided with the first hot bellows, Linked together with the outer wall of tower body on the inside of first hot bellows and by cinclides in being connected in tower;Tower bottom is provided with the second hot blast Case, the top of the second hot bellows communicate with longitudinal warm-air pipe bottom, and exhaust outlet connects air-introduced machine by pipeline;First hot bellows, Second hot bellows connect pressure fan by pipeline, and the first hot bellows, the air inlet of the second hot bellows are provided with control valve;It is vertical Extend downwardly and support on the ground to warm-air pipe through the second hot bellows.
3. vertical drying as claimed in claim 2 screens tower, it is characterised in that:Second hot bellows connect the bottom of longitudinal warm-air pipe The angle of inclination of end, the longitudinal warm-air pipe of hot blast cant beam connection, sieve plate and cant beam is between 15-45 degree.
4. vertical drying as claimed in claim 1 screens tower, it is characterised in that:Inside tower body three layer screen is provided with below charging aperture Plate, the first cloth slide carriage is provided with above first layer sieve plate, the first cloth slide carriage is fixed on charging aperture by lifting bolt On the whippletree of side;Be provided with the second cloth slide carriage above second layer sieve plate, the second cloth slide carriage be fixed on longitudinal warm-air pipe or On the warm-air pipe of center.
5. vertical drying as claimed in claim 4 screens tower, it is characterised in that:The both ends of first grid section are connected to inner collar On beam and outer shroud collar tie beam, inner collar deck-molding in outer shroud collar tie beam, the first grid section from inner ring collar tie beam to the width in outer shroud collar tie beam direction by Gradual change is wide;First chute is between two the first grid sections, and the first chute is up-narrow and down-wide, from inner ring collar tie beam to outer shroud collar tie beam direction Width gradually broaden;The both ends of second grid section are connected between inner ring collar tie beam and outer shroud collar tie beam, and external toroidal ring deck-molding In inner ring collar tie beam, the second grid section gradually broadens from outer shroud collar tie beam to the width in inner ring collar tie beam direction, and the second chute is positioned at two the Between two grid sections, the second chute gradually broadens from outer shroud collar tie beam to the width in inner ring collar tie beam direction.
6. vertical drying as claimed in claim 5 screens tower, it is characterised in that:Set between second layer sieve plate and third layer sieve plate There are fines recovering hopper or the second discharging mouth of pipe.
7. vertical drying as claimed in claim 1 screens tower, it is characterised in that:Longitudinal hot blast bottom of the tube is as supporting leg, support Leg is provided with gravimetric tilt automatic opener.
8. vertical drying screens tower as described in claim 2 or 4, it is characterised in that:Closed at both ends, the tower body of center warm-air pipe Observation door is provided with sidepiece;Tower body is inside and outside to be provided with temperature controller.
9. vertical drying as claimed in claim 5 screens tower, it is characterised in that:The grid section or slide carriage of at least one layer of sieve plate can multistages Set, and epimere discharge end is higher than hypomere feed end.
CN201720640025.7U 2017-06-05 2017-06-05 Vertical drying screens tower Active CN207035769U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720640025.7U CN207035769U (en) 2017-06-05 2017-06-05 Vertical drying screens tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720640025.7U CN207035769U (en) 2017-06-05 2017-06-05 Vertical drying screens tower

Publications (1)

Publication Number Publication Date
CN207035769U true CN207035769U (en) 2018-02-23

Family

ID=61469506

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720640025.7U Active CN207035769U (en) 2017-06-05 2017-06-05 Vertical drying screens tower

Country Status (1)

Country Link
CN (1) CN207035769U (en)

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Date Code Title Description
GR01 Patent grant
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Effective date of registration: 20200611

Address after: 014010 northeast side of xihegu Mengxi cement plant, Nanpai village, Kunqu District, Baotou City, Inner Mongolia Autonomous Region

Patentee after: Baotou Yifeng building materials admixture Co., Ltd

Address before: 014000 the Inner Mongolia Autonomous Region Baotou New District Qingshan District, building 8, No. 342 long Xiyuan

Patentee before: Guo Dajun

TR01 Transfer of patent right