CN206855765U - A kind of process units of aerated bricks slurry - Google Patents
A kind of process units of aerated bricks slurry Download PDFInfo
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- CN206855765U CN206855765U CN201720771397.3U CN201720771397U CN206855765U CN 206855765 U CN206855765 U CN 206855765U CN 201720771397 U CN201720771397 U CN 201720771397U CN 206855765 U CN206855765 U CN 206855765U
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Abstract
The utility model discloses a kind of process units of aerated bricks slurry, belong to building brick technical field.The process units of aerated bricks slurry of the present utility model, including feed mechanism, wet-milling mechanism, temporary storage mechanism and filter mechanism, wherein：The feed mechanism feeding to wet-milling mechanism, wet-milling mechanism and filter mechanism communicates；Slurry after filtered mechanism filtering is passed directly into inside temporary storage mechanism.By the setting of filter mechanism, after the bulky grain filtering in the slurry after wet-milling, then it is passed through temporary storage mechanism and keeps in, the gas brick particle produced is uniform, and no bulky grain influences the uniform force of gas brick, and internal void is uniform in size.The utility model solves the problems, such as easily to ftracture when aerated bricks local pressure inequality in the prior art be present.
Description
Technical field
It the utility model is related to building brick technical field, more particularly to a kind of process units of aerated bricks slurry.
Background technology
Aerated bricks are also referred to as air-entrained concrete building block, using very extensively, be used primarily in machinery plant and civil buildings
In materials for wall, filling wall, the filling enclosure wall of load-bearing walling and the non-bearing material such as floor and roof boarding and surrounding.At present
Aerated bricks have turned into the leading products of building material industry, and country progressively prohibits the use of clay solid brick, gradually taken and generation
Be exactly air-entrained concrete building block, steam-pressing brisk.
Aerated bricks with it is in light weight, thermal and insulating performance is good, shock resistance is strong, processing characteristics is good, with certain resistance to height
The characteristics of warm nature, sound insulation value are good, strong adaptability, it can carry out amount body according to local different raw material, different condition and make surely, raw material
Wide material sources, river sand, flyash, ore in sand form etc. may be selected, suit measures to local conditions, can be salvaged, it is environmental, really become give up into
It is precious.
But existing aerated bricks, which are thrown away afterwards, easily occurs that hole is uneven, phenomenon of large granular impurity, causes aerated bricks office
Portion's unbalance stress and easily divide.
Through retrieval, Chinese patent application, publication number：CN205219420U, publication date：2016.05.11, one kind is disclosed
For the agitating device of aerated bricks slurry, including the agitating device body in tank body, the agitating device body include
Agitating shaft and frame type stirring leaf, agitating shaft are connected with the main motor being installed at the top of tank body, and the frame type stirring leaf is arranged on and stirred
Mix on axle, the agitating shaft is hollow shaft, and auxiliary-motor, the motor of the auxiliary-motor are fixed with the side wall on agitating shaft top
Axle is extend into agitating shaft, and the lower section of the agitating shaft is provided with rotating disk, the motor shaft phase in the middle part and agitating shaft of the rotating disk
Even, the rotating disk is provided with upward blend stop and the block arranged successively downwards, and the purpose of the utility model is to provide one kind
Slurry can be sufficiently stirred, and the agitating device of the aerated bricks slurry beneficial to postorder cleaning.But the utility model does not have
The production process being related to before slurry stirring.
Utility model content
1. utility model technical problems to be solved
The problem of easily being ftractureed during for aerated bricks local pressure inequality in the prior art be present, the utility model provides
A kind of process units of aerated bricks slurry.It can make the aerated bricks particle of production uniform by increasing filter.
2. technical scheme
To reach above-mentioned purpose, technical scheme provided by the utility model is：
A kind of process units of aerated bricks slurry, including feed mechanism, wet-milling mechanism, temporary storage mechanism and filter mechanism, its
In：The feed mechanism feeding to wet-milling mechanism, wet-milling mechanism and filter mechanism communicates；Slurry after filtered mechanism filtering is straight
Connect inside temporary storage mechanism.By the setting of filter mechanism, after the bulky grain filtering in the slurry after wet-milling, then it is passed through temporarily
Deposit mechanism to keep in, the gas brick particle produced is uniform, and no bulky grain influences the uniform force of gas brick, and internal void size is equal
It is even.
Further technical scheme, material receiving port that the wet-milling mechanism includes being sequentially communicated, charging aperture, ball milling cylinder and go out
Material mouth, in addition to the power part of ball milling cylinder rotational power is provided；The blanking port of the external feed mechanism of material receiving port；It is described go out
The feeding mouth of the external filter mechanism of material mouth, forms unified monolithic construction, and production technology is unobstructed, efficiency high.
Further technical scheme, filter mechanism filters for drum-type, including net cylinder, rewinding mouth, residue outlet and slag recovering box；
The net cylinder is directly fixedly connected with discharging opening, and with ball milling cylinder synchronous axial system；The rewinding mouth be fixed on net cylinder just under
Side, the slurry after net cylinder filtering with the tremie pipe that rewinding mouth communicates by being passed through temporary storage mechanism；The top and net of the residue outlet
The slag notch of cylinder end is communicated, and the end of residue outlet is slagged tap to slag recovering box.Net cylinder can link into an integrated entity with ball milling cylinder, thing
Net cylinder filtering is directly entered after material wet-milling, is separated slurry and material residue by net cylinder, material residue can also reuse, production cost
It is low.
Further technical scheme, power part include motor, reductor, shaft coupling, belt bearing, the skin of driven type connection
Band, base bearing and actively and passively belt pulley, drive pulley are fixed on the power transmission shaft of reductor, negative pulley wheel is fixed
In on ball milling cylinder.Belt-type is driven, and the rotation of net cylinder and ball milling cylinder is paused continuously, and abrasive material and filtering stability are strong.
Further technical scheme, base bearing are 2, divide the both sides of row ball milling cylinder, to improve ball milling cylinder wet-milling
Stability；The belt bearing is also 2, divides the both sides of row drive pulley, it is possible to increase the stability of pulley rotation.
Further technical scheme, actively and passively the periphery of belt pulley be covered with belt guard ring, avoid operational risk and miscellaneous
Thing is involved in belt.
Further technical scheme, temporary storage mechanism are scratch pool, are arranged on below ground, are flowed down, made using slurry deadweight
Make low with production cost；The feed mechanism is elevator or belt conveyer, can carry out phase according to the upper discharge position of raw material
The selection answered.
Further technical scheme, scratch pool are sealing pond, avoid debris from falling into slurry；It is fixed with and stirs at closure center
The downwardly extending agitator of bar is mixed, avoids slurry from being layered.
Further technical scheme, puddler are in " soil " font, and cross bar length is slightly less than scratch pool internal diameter, stirs scope
Greatly, avoid stirring dead angle.
Further technical scheme, the external grout outlet of scratch pool and shurry pump by shurry pump toward slurry tank, in time by slurry
Processing, avoids long agitation or standing.
3. beneficial effect
Using technical scheme provided by the utility model, compared with prior art, have the advantages that：
(1) process units of a kind of aerated bricks slurry of the present utility model, the external filter mechanism at the discharging of wet-milling mechanism,
By the filtering of wet-milling halfway large granular materials, the gas brick uniform force produced, internal void size also uniformity；
(2) a kind of process units of aerated bricks slurry of the present utility model, net cylinder can link into an integrated entity with ball milling cylinder
Formula structure, net cylinder filtering is directly entered after material wet-milling, is separated slurry and material residue by net cylinder, material residue can also repeat profit
With production cost is low；
(3) process units of a kind of aerated bricks slurry of the present utility model, the net cylinder and ball milling cylinder of belt-type transmission
Rotation is paused continuously, and abrasive material and filtering stability are strong；
(4) a kind of process units of aerated bricks slurry of the present utility model, base bearing divide the both sides of row ball milling cylinder, can
Improve the stability of ball milling cylinder wet-milling；
(5) a kind of process units of aerated bricks slurry of the present utility model, the setting of belt guard ring, can avoid operating wind
Danger and debris are involved in belt；
(6) a kind of process units of aerated bricks slurry of the present utility model, scratch pool are arranged on below ground, utilize slurry
Deadweight flows down, and manufacture is low with production cost；
(7) process units of a kind of aerated bricks slurry of the present utility model, scratch pool are sealing pond, avoid debris from falling into material
Slurry；Agitator can avoid slurry from being layered；
(8) process units of aerated bricks slurry of the present utility model, puddler stirring scope is big, avoids stirring dead angle.
Brief description of the drawings
Fig. 1 is the process units structural representation of aerated bricks slurry of the present utility model.
In figure：1st, feed mechanism；2nd, wet-milling mechanism；3rd, filter mechanism；4th, temporary storage mechanism；5th, slurry tank；21st, material receiving port；
22nd, charging aperture；23rd, ball milling cylinder；24th, power part；25th, belt guard ring；26th, discharging opening；31st, net cylinder；32nd, rewinding mouth；33rd, go out
Slag pipe；34th, slag recovering box；35th, tremie pipe；41st, scratch pool；42nd, agitator；43rd, puddler；44th, shurry pump；45th, grout outlet；
241st, motor；242nd, reductor；243rd, shaft coupling；244th, belt bearing；245th, belt；246th, base bearing.
Embodiment
To further appreciate that content of the present utility model, the utility model is described in detail with reference to accompanying drawing.
Embodiment 1
The process units of the aerated bricks slurry of the present embodiment, as shown in figure 1, including feed mechanism 1, wet-milling mechanism 2, keeping in
Mechanism 4 and filter mechanism 3, wherein：Feed mechanism 1 can be elevator or belt conveyer, and wet-milling mechanism 2 can be wet type ball
Grinding machine, filter mechanism 3 can be filter screens, and temporary storage mechanism 4 can be temporary storage tank, the feeding of feed mechanism 1 to wet-milling mechanism 2,
Wet-milling mechanism 2 and filter mechanism 3 communicate；Slurry after filtered mechanism 3 filters is passed directly into inside temporary storage mechanism 4.
The process units of the aerated bricks slurry of the present embodiment, by the setting of filter mechanism 3, by the slurry after wet-milling
After bulky grain filtering, then it is passed through temporary storage mechanism 4 and keeps in, the gas brick particle produced is uniform, and no bulky grain influences the stress of gas brick
Uniformity, internal void are uniform in size.
Embodiment 2
The process units of the aerated bricks slurry of the present embodiment, basic structure are different and the improvement is that with embodiment 1：
Wet-milling mechanism 2 includes material receiving port 21, charging aperture 22, ball milling cylinder 23 and the discharging opening 26 being sequentially communicated, in addition to provides ball milling
The power part 24 of the rotational power of cylinder 23；The blanking port of the external feed mechanism 1 of material receiving port 21；Taken over outside the discharging opening 26
The feeding mouth of filter structure 3, unified monolithic construction is formed, production technology is unobstructed, efficiency high.Filter mechanism 3 is drum-type mistake
Filter, including net cylinder 31, rewinding mouth 32, residue outlet 33 and slag recovering box 34；The net cylinder 31 is directly fixedly connected with discharging opening 26, and
With the synchronous axial system of ball milling cylinder 23；The rewinding mouth 32 is fixed on the underface of net cylinder 31, and the slurry after net cylinder 31 filters passes through
The tremie pipe 35 communicated with rewinding mouth 32 is passed through temporary storage mechanism 4；The top of the residue outlet 33 and the slag notch of the end of net cylinder 31
Communicate, the end of residue outlet 33 is slagged tap to slag recovering box 34.Net cylinder 31 can link into an integrated entity with ball milling cylinder 23, material wet-milling
After be directly entered net cylinder 31 and filter, slurry and material residue are separated by net cylinder 31, material residue can also reuse, production cost
It is low.
Embodiment 3
The process units of the aerated bricks slurry of the present embodiment, basic structure are different and the improvement is that with embodiment 2：
Power part 24 includes motor 241, reductor 242, shaft coupling 243, belt bearing 244, belt 245, the main shaft of driven type connection
246 and actively and passively belt pulley are held, drive pulley is fixed on the power transmission shaft of reductor 242, and negative pulley wheel is fixed
In on ball milling cylinder 23.Belt-type is driven, and the rotation of net cylinder 31 and ball milling cylinder 23 is paused continuously, and abrasive material and filtering stability are strong.
Base bearing 246 could be arranged to 2, divide the both sides of row ball milling cylinder 23, to improve the stability of the wet-milling of ball milling cylinder 23；It is described
Belt bearing 244 is also 2, divides the both sides of row drive pulley, it is possible to increase the stability of pulley rotation.
Embodiment 4
The process units of the aerated bricks slurry of the present embodiment, basic structure are different and the improvement is that with embodiment 3：
Actively and passively the periphery of belt pulley is covered with belt guard ring 25, avoids operational risk and debris from being involved in belt.Temporary storage mechanism 4 is temporary
Pond 41 is deposited, is arranged on below ground, is flowed down using slurry deadweight, manufacture is low with production cost；The feed mechanism 1 is elevator
Or belt conveyer, it can be selected accordingly according to the upper discharge position of raw material.
Embodiment 5
The process units of the aerated bricks slurry of the present embodiment, basic structure are different and the improvement is that with embodiment 4：
Scratch pool 41 is sealing pond, avoids debris from falling into slurry；The downwardly extending agitator 42 of puddler 43 is fixed with closure center, is kept away
Exempt from slurry layering.Puddler 43 is in " soil " font, and cross bar length is slightly less than the internal diameter of scratch pool 41, and stirring scope is big, avoids stirring
Dead angle.The external grout outlet 45 of scratch pool 41 and shurry pump 44 toward slurry tank 5, in time handle slurry shurry pump, when avoiding long
Between stirring or stand.Slurry tank 5 can also built-in agitator, during pause production, start agitator, avoid slurry from being layered.
Embodiment 6
The basic structure of the process units of the aerated bricks slurry of the present embodiment carries out foaming modification slurry with embodiment 5
Make, its production craft step is：
A, dispensing：Cement, starch, aluminium powder are taken, by 4：2：1 weight proportion is prepared, and is made 200 kilograms；
B, mix：After step A preparation powder is well mixed, water is added to be stirred into pre-hardening body, the weight of water is 80 kilograms；
C, mould is entered：Pre-hardening body is tiled into mould, spreads disk amount：4kg/m2；
D, dry：Lump material is made after being transferred to drying machine drying；
E, crush：Lump material input disintegrating machine is crushed；
F, keep in：Feeding is lifted to material receiving port 21 by feed mechanism 1 after broken；
G, ball milling：Material carries out wet ball-milling by the laggard goal grinding cylinder 23 of charging aperture 22 again, after ball milling, in ball grinding cylinder
Draw in body 23 under the guiding of flitch, discharge to discharging opening 26；
H, filter：Material is discharged by discharging opening 26 and carries out drum-type filtering to net cylinder 31 after ball milling；In filter process, ball
Grind incomplete large granular materials to discharge to the recovery of slag recovering box 34 by residue outlet 33, return to feed mechanism 1；
J, store：The lower thing of filter is passed through scratch pool 41 by rewinding mouth 32 and tremie pipe 35, then through grout outlet 45 and shurry pump
44 by shurry pump toward slurry tank 5, foaming modification slurry is made.
Foaming modification slurry made from the process units of the aerated bricks slurry of the present embodiment, by the fewer aluminium powder of addition
It is amplified and positions, during making full use of cement initial set heat release promotion starch conversion, aluminium powder progress starch adsorption is determined
Position, avoid causes position unstable so as to finally influence hair during standing precuring of the aluminium powder below because density is different
Steep the uniformity of position and the uniformity of internal void size.
Embodiment 7
The basic structure of the process units of the aerated bricks slurry of the present embodiment carries out foaming modification slurry with embodiment 6
Make, its production craft step is：
A, dispensing：Cement, starch, aluminium powder are taken, by 4：2：1 weight proportion is prepared, and is made 200 kilograms；
B, mix：After step A preparation powder is well mixed, water is added to be stirred into pre-hardening body, the weight of water is public for 100
Jin；
C, mould is entered：Pre-hardening body is tiled into mould, spreads disk amount：6kg/m2；
D, it is quick-frozen：It is transferred to quick freezing repository snap frozen；
E, freeze：It is transferred to 50m2Lump material is made after being freezed in the vacuum freeze drying cabin of lyophilized area；The block thing
Material can be stored standby, can also carry out subsequent processing step；
F, crush：Lump material input disintegrating machine is crushed；
G, keep in：Feeding is lifted to material receiving port 21 by feed mechanism 1 after broken；
H, ball milling：Material carries out wet ball-milling by the laggard goal grinding cylinder 23 of charging aperture 22 again, after ball milling, in ball grinding cylinder
Draw in body 23 under the guiding of flitch, discharge to discharging opening 26；
I, filter：Material is discharged by discharging opening 26 and carries out drum-type filtering to net cylinder 31 after ball milling；In filter process, ball
Grind incomplete large granular materials to discharge to the recovery of slag recovering box 34 by residue outlet 33, return to feed mechanism 1；
J, store：The lower thing of filter is passed through scratch pool 41 by rewinding mouth 32 and tremie pipe 35, then through grout outlet 45 and shurry pump
44 by shurry pump toward slurry tank 5, foaming modification slurry is made.
Foaming modification slurry made from the process units of the aerated bricks slurry of the present embodiment, compared to embodiment 6, with lyophilized
Method pre-hardening body is dehydrated, although drying cost increased, ball milling mashing is more prone to, the positioning of obtained aluminium powder
It is more uniform, it is thus also avoided that cement enters the final set phase too early and causes precuring not thorough during drying.
Embodiment 8
The basic structure of the process units of the aerated bricks slurry of the present embodiment carries out foaming modification slurry with embodiment 6
Basic step is made with embodiment 7, it is different and the improvement is that：Step C paving mould thickness is 3~4cm, is in the present embodiment
3cm；In step D, quick freezing temperature is -15~-18 DEG C, and the quick-frozen time is 40~60 minutes, is 40 minutes in the present embodiment.
In step E, the curve of the vacuum freeze drying in vacuum freeze drying cabin is：
A, temperature raising period：Inner panel temperature is warming up to 100 ± 5 DEG C within 10~15 minutes, is evacuated within 150Pa；
B, the water sublimed phase：100 DEG C of holding 1h of plate temperature, vacuum keep 120 ± 5Pa；
C, the medium temperature phase：Plate temperature drop to 80 DEG C of holding 2h, vacuum keeps 60~80Pa；
D, hypothermic phase：Plate temperature drop to 60 DEG C of holding 2h, vacuum keeps 40~60Pa；
E, the final temperature phase：Plate temperature drop to 55 DEG C, 50 ± 1 DEG C of temperature of charge, vacuum keeps 40~50Pa, the gentle temperature of charge of plate
In vacuum breaker export after two horizontal parallel lines holding 30min.
Foaming modification slurry made from the process units of the aerated bricks slurry of the present embodiment, first pre-hardening body is carried out lyophilized
Technique, be for customized in material characteristic before lyophilized, without the freeze-drying time of several hours of traditional lyophilized technique more than 10 or even 20,
The cost of manufacture of obtained lyophilized foaming modification initial set body be not higher than 50%, but applied to aerated bricks production process in, i.e., by
In the amplifying type application of aluminium powder material, stirring and precuring time are substantially reduced, after measured, the mixing time of pouring can is by original
It to be down within 30 minutes 5 minutes or so, the precuring time can be down to 50 minutes or so by original 1.5 hours, reduce process costs,
Prepared by aerated bricks in Air Bubble Size it is uniform, position is uniform, even intensity, so as to solve in the prior art aerated bricks presence
The problem of easily being ftractureed during local pressure inequality.
Schematically the utility model and embodiments thereof are described above, this describes no restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So if this area
Those of ordinary skill enlightened by it, without departing from the spirit of the invention, without creativeness designing with should
The similar frame mode of technical scheme and embodiment, all should belong to the scope of protection of the utility model.
Claims (10)
1. a kind of process units of aerated bricks slurry, including feed mechanism (1), wet-milling mechanism (2) and temporary storage mechanism (4), it is special
Sign is, in addition to filter mechanism (3), wherein：Feed mechanism (1) feeding to wet-milling mechanism (2), wet-milling mechanism (2) and
Filter mechanism (3) communicates；It is internal that slurry after filtered mechanism (3) filtering is passed directly into temporary storage mechanism (4).
2. the process units of aerated bricks slurry according to claim 1, it is characterised in that：The wet-milling mechanism (2) includes
Material receiving port (21), charging aperture (22), ball milling cylinder (23) and the discharging opening (26) being sequentially communicated, in addition to ball milling cylinder is provided
(23) power part (24) of rotational power；The blanking port of the external feed mechanism of the material receiving port (21) (1)；The discharging opening (26)
The feeding mouth of external filter mechanism (3).
3. the process units of aerated bricks slurry according to claim 2, it is characterised in that：The filter mechanism (3) is to turn
Barrel type filtering, including net cylinder (31), rewinding mouth (32), residue outlet (33) and slag recovering box (34)；The net cylinder (31) is direct and goes out
Material mouth (26) is fixedly connected, and with ball milling cylinder (23) synchronous axial system；The rewinding mouth (32) be fixed on net cylinder (31) just under
Side, the slurry after net cylinder (31) filtering are passed through temporary storage mechanism (4) by the tremie pipe (35) communicated with rewinding mouth (32)；It is described go out
The top of slag pipe (33) and the slag notch of net cylinder (31) end are communicated, and the end of residue outlet (33) is slagged tap to slag recovering box (34).
4. the process units of aerated bricks slurry according to claim 2, it is characterised in that：The power part (24) includes passing
Motor (241), reductor (242), shaft coupling (243), belt bearing (244), belt (245), the base bearing of dynamic formula connection
(246) and actively and passively belt pulley, drive pulley are fixed on the power transmission shaft of reductor (242), and negative pulley wheel is solid
Due on ball milling cylinder (23).
5. the process units of aerated bricks slurry according to claim 4, it is characterised in that：The base bearing (246) is 2
It is individual, divide the both sides of row ball milling cylinder (23)；The belt bearing (244) is also 2, divides the both sides of row drive pulley.
6. the process units of aerated bricks slurry according to claim 5, it is characterised in that：The actively and passively belt pulley
Periphery be covered with belt guard ring (25).
7. the process units of aerated bricks slurry according to any one of claims 1 to 6, it is characterised in that：The temporary storage mechanism
(4) it is scratch pool (41)；The feed mechanism (1) is elevator or belt conveyer.
8. the process units of aerated bricks slurry according to claim 7, it is characterised in that：The scratch pool (41) is sealing
Pond, puddler (43) downwardly extending agitator (42) is fixed with closure center.
9. the process units of aerated bricks slurry according to claim 8, it is characterised in that：The puddler (43) is in " soil "
Font, cross bar length are slightly less than scratch pool (41) internal diameter.
10. the process units of aerated bricks slurry according to claim 8, it is characterised in that：The scratch pool (41) is external
Grout outlet (45) and shurry pump (44) are by shurry pump toward slurry tank (5).
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| CN201720771397.3U CN206855765U (en) | 2017-06-29 | 2017-06-29 | A kind of process units of aerated bricks slurry |
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| CN201720771397.3U CN206855765U (en) | 2017-06-29 | 2017-06-29 | A kind of process units of aerated bricks slurry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379252A (en) * | 2017-06-29 | 2017-11-24 | 马鞍山市恒达轻质墙体材料有限公司 | A kind of process units of aerated bricks slurry |
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- 2017-06-29 CN CN201720771397.3U patent/CN206855765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107379252A (en) * | 2017-06-29 | 2017-11-24 | 马鞍山市恒达轻质墙体材料有限公司 | A kind of process units of aerated bricks slurry |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Production device for aerated brick slurry Effective date of registration: 20190409 Granted publication date: 20180109 Pledgee: Industrial and Commercial Bank of China Limited Maanshan Huashan Branch Pledgor: Ma'anshan Hengda light wall material Co., Ltd. Registration number: 2019340000184 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200330 Granted publication date: 20180109 Pledgee: Industrial and Commercial Bank of China Limited Maanshan Huashan Branch Pledgor: MAANSHAN HENGDA LIGHTWEIGHT WALL MATERIAL Co.,Ltd. Registration number: 2019340000184 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20200629 |