CN208038972U - A kind of novel hypoxemia cycle road surface regenerative heater - Google Patents
A kind of novel hypoxemia cycle road surface regenerative heater Download PDFInfo
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- CN208038972U CN208038972U CN201721300918.3U CN201721300918U CN208038972U CN 208038972 U CN208038972 U CN 208038972U CN 201721300918 U CN201721300918 U CN 201721300918U CN 208038972 U CN208038972 U CN 208038972U
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- air
- return air
- combustion chamber
- shell
- air outlet
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Abstract
The utility model discloses a kind of novel hypoxemia to recycle road surface regenerative heater, including shell, it is internally provided with combustion chamber in shell, the top of the combustion chamber is provided with air inlet and low-oxygen burner, the bottom end of combustion chamber is provided with air outlet, the bottom of shell is provided with air outlet box, air outlet is connected to air outlet box, it is internally provided with partition board in shell, shell is separated out return air collecting region and return air channel by the partition board, it is provided with wind turbine at the top of return air collecting region, return air collecting region is connected to by wind turbine with one end of return air channel, the other end of return air channel is connected to the air inlet of combustion chamber, it is laid with multiple gap nozzles in the bottom interval of air outlet box, the gross area of the gap nozzle is less than the area of return air collecting region.The Cycling hot-blast heating operation principle that the utility model heating device uses, is reheated the gas sampling for completing heating work by high-temperature blower, to achieve the effect that energy-saving and emission-reduction, significant effect.
Description
Technical field
The utility model is related to a kind of equipment for sheet pavement in-situ heat regeneration, concretely relate to a kind of novel
Hypoxemia recycles road surface regenerative heater.
Background technology
Sheet pavement in-situ heat regeneration is regenerated old asphalt pavement heating, scarifying, addition with hot reproducer on the spot
Agent, new pitch mixture then again stir after pave, the pavement maintenance technique of compaction moulding.Sheet pavement in-situ heat again
In raw process, first ground need to be heated using heating plate, then using rake loose device rake loose ground face, while loose device is harrowed and passing through
Middle material cage is directly formed afterwards.Existing heating plate is bad to the heating effect on ground, and the hot wind after heating cannot be effectively sharp
With, waste of energy, pollute environment, at the same in heating process bituminous paving aging oxidization condition than more serious.
Utility model content
Based on above-mentioned technical problem, the utility model provides a kind of novel hypoxemia cycle road surface regenerative heater.
Technical solution used by the utility model is：
A kind of novel hypoxemia cycle road surface regenerative heater, including shell, it is described in the combustion chamber that is internally provided with of shell
The top of combustion chamber is provided with air inlet and low-oxygen burner, and the bottom end of combustion chamber is provided with air outlet, is set in the bottom of shell
It is equipped with air outlet box, air outlet is connected to air outlet box, and in the partition board that is internally provided with of shell, shell is separated out return air by the partition board
Collecting region and return air channel, are provided with wind turbine at the top of return air collecting region, and return air collecting region passes through wind turbine and return air channel
One end is connected to, and the other end of return air channel is connected to the air inlet of combustion chamber；It is provided with exhaust tube at the top of shell, described time
Wind channel is connected to by a branched bottom with exhaust tube, and capacity adjusting flap, capacity tune are internally provided in exhaust tube
Section turnover panel is connect with turning knob；The low-oxygen burner includes kitchen range and injection channel, and injection channel is in radial pattern, one end
It is fixed on kitchen range, nozzle is provided on kitchen range, diameter not equal circular hole is provided on the side wall in injection channel；In outlet air
The bottom interval of case is laid with multiple gap nozzles, and the gross area of the gap nozzle is less than the area of return air collecting region.
Preferably, the air outlet box includes bellows main body and the splicing bellows positioned at bellows main body both sides, in bellows main body
Bottom surface be provided with 4 gap nozzles, splicing bellows bottom surface be provided with 10 gap nozzles.
Preferably, the return air collecting region includes close to wind turbine side inlet scoop and close to combustion chamber outlet air side air draught
Mouthful, wherein the width close to wind turbine side inlet scoop is 20mm, it is 35mm close to combustion chamber outlet air side inlet scoop width.
Preferably, the air quantity of control combustion chamber air inlet and air outlet box gap nozzle air output ratio are 1.3: 1.
Preferably, the bellows main body and splicing bellows between using fastener connect, the fastener include plug socket and with
Its matched plug-in unit, plug socket are made of pedestal and the cylindrical body being connected on pedestal, and pedestal and cylindrical body connect for integral type
It connects, is provided with strip-shaped hole along its length in cylindrical body, the plug-in unit is provided with blocking in the form of sheets, in the end of plug-in unit
Portion, plug-in unit are inserted into strip-shaped hole.
Preferably, the partition board is heat-preservation cotton baffle.
Preferably, the wind turbine is fixed by flange, and asbestos packing sheet is provided with below flange, in the heat preservation of wind turbine
Position is provided with bridge insulation thermal resistance hole.
The advantageous effects of the utility model are：
(1) the Cycling hot-blast heating operation principle that heating device uses, the exhaust gas of heating work will be completed by high-temperature blower
Collection reheats, to achieve the effect that energy-saving and emission-reduction, because the exhaust fumes content of recycling is less than normal value, common burning
Device cannot meet use, therefore Hot-blast Heating selection is low-oxygen burner, can be burnt in oxygen content 16%, and effect is aobvious
It writes.
(2) for hot wind to the heating of bituminous paving using jet impingement heat transfer principle, air is sent into combustion chamber by wind turbine,
After burner is heated to 550 DEG C, into heating plate, ground is blown to by the gap nozzle high speed in heating plate and is added
Heat, since hot wind directly impacts ground, flow is short and thin by the flow boundary layer on impact ground, in the shock zone coefficient of heat transfer
Height, good effect of heat exchange, while hot blast temperature is not high, and oxygen content is relatively low after burning, therefore the aging oxidation etc. of pitch
Situation is all substantially reduced.
(3) heating plate is equipped with multiple gap nozzles, and the ground heated by previous nozzle can downwards conduct heat,
The temperature that the temperature of lower layer increases surface layer simultaneously reduces, and increases the temperature difference on hot wind and surface layer in this way, is conducive to improve next wind
The heating effect of mouth improves heat service efficiency.
(4) hot wind that kinetic energy is lost by heat exchange sucks back participation burning again by wind turbine, because some hot wind is arranged
Inflator is discharged in air, and the air output of heating region is fewer than return air amount, therefore heating region is negative pressure state, ensures heating region
The glance coal of generation does not overflow, while having fresh air to fill into again, ensures the required necessary oxygen of burner operation, exhaust
Cylinder be equipped with control valve can according to Operating condition adjustment capacity how much, ensureing that heating region negative pressure do not spill over the condition of glance coal
Under reduce capacity to the greatest extent, achieve the effect that energy-saving and emission-reduction.
Description of the drawings
The utility model is described in further detail with specific implementation mode below in conjunction with the accompanying drawings：
Fig. 1 is the principle schematic diagram of the utility model；
Fig. 2 is the external structure schematic diagram of the utility model；
Fig. 3 mainly shows jet impingement heat transfer schematic diagram of the hot wind to ground of air outlet box ejection；
Fig. 4 is the principle schematic diagram of exhaust tube in the utility model；
Fig. 5 is the structural schematic diagram of low-oxygen burner in the utility model；
Fig. 6 is the structural schematic diagram of fastener in the utility model；
Fig. 7 is the structural schematic diagram of wind turbine flange portion position in the utility model.
Specific implementation mode
In conjunction with attached drawing, a kind of novel hypoxemia cycle road surface regenerative heater, including shell 1, in being internally provided with for shell
The top of combustion chamber 2, the combustion chamber is provided with air inlet 3 and low-oxygen burner 4, and the bottom end of combustion chamber 2 is provided with air outlet.
The bottom of shell 1 is provided with air outlet box 5, air outlet is connected to air outlet box 5.It is internally provided with partition board 6 in shell 1, it is described
Shell is separated out return air collecting region 7 and return air channel 8 by partition board 6, the top of return air collecting region 7 is provided with wind turbine 9, return air is received
Collection area 7 is connected to by wind turbine 9 with one end of return air channel 8, and the other end of return air channel 8 is connected to the air inlet of combustion chamber 2.Wind
Air is sent into combustion chamber 2 by machine 9, after low-oxygen burner 4 is heated to 550 DEG C, into air outlet box 5, by air outlet box 5
501 high speed of gap nozzle blows to ground and is heated, with the hot wind after the heat exchange of ground after the collection of return air collecting region 7, then through wind
Machine 9 is delivered to low-oxygen burner 4.The top of shell 1 is provided with exhaust tube 10, the return air channel 8 passes through a branched bottom
It is connected to exhaust tube 10, capacity adjusting flap 11, capacity adjusting flap 11 and rotation is internally provided in exhaust tube 10
Knob 12 connects, by adjust on exhaust tube the turning knob that is arranged can according to Operating condition adjustment capacity how much.The hypoxemia combustion
Burner 4 includes kitchen range 401 and injection channel 402, and injection channel 402 is in radial pattern, one end of which is fixed on kitchen range 401, in stove
It is provided with nozzle 404 on first 401, diameter not equal circular hole 403 is provided on the side wall in injection channel.At the bottom of air outlet box 5
Portion interval is laid with multiple gap nozzles 501, and the gross area of the gap nozzle 501 is less than the area of return air collecting region, it is ensured that
Heating region is in negative pressure state.
The Cycling hot-blast heating operation principle that heating device uses, the gas sampling of heating work will be completed by high-temperature blower
It reheats, to achieve the effect that energy-saving and emission-reduction, because the exhaust fumes content of recycling is less than normal value, common burner is not
It can meet and use, therefore Hot-blast Heating selection is low-oxygen burner, can be burnt in oxygen content 16%, work characteristics
It is：
1. low oxygen combustion often uses diffusion combustion mode, a large amount of fuel molecule is diffused into larger space in burner hearth, and combustion-supporting
Oxygen in air burns after being sufficiently mixed contact, and flame volume significantly increases；
2. flame temperature of thermal field is evenly distributed, mean temperature increases in combustion furnace, and peak temperature reduces in flame, heats energy
Power is turned up；
3. combustion process is abundant, the hyperoxia area of localized hyperthermia of traditional combustion is not present, NO in combustion processXProduction quantity pole
Few, fuel consumption is low, while CO, CO in flue gas2It is reduced with gas contents such as hydrocarbons, pollutant discharge amount is less.
Environmental protection and energy saving significant effect.
4. low combustion noise.Combustion noise and burn rate square and combustion intensity it is directly proportional, due to fuel and oxygen
The region burnt expands, and being formed reduces with the entirely different thermal conditions of traditional combustion, chemical reaction velocity, thus burns
The lower noise of generation.
Hot wind is to the heating of bituminous paving using jet impingement heat transfer principle.Its course of work is as follows：Wind turbine will be empty
Pneumatic transmission enters combustion chamber, after burner is heated to 550 DEG C, into air outlet box, passes through the gap nozzle high speed of air outlet box bottom
It blows to ground to be heated, since hot wind directly impacts ground, flow is short and thin by the flow boundary layer on impact ground, is rushing
It is high to hit the region coefficient of heat transfer, good effect of heat exchange.Hot blast temperature is not high simultaneously, and oxygen content is relatively low after burning, therefore drips
Situations such as green aging aoxidizes is all substantially reduced.
Air outlet box is equipped with multiple gap nozzles, and the ground heated by previous nozzle can downwards conduct heat, under
The temperature that the temperature of layer increases surface layer simultaneously reduces, and increases the temperature difference on hot wind and surface layer in this way, is conducive to improve next tuyere
Heating effect, improve heat service efficiency.
The hot air circulation process of heater is as follows：
1. the hot wind of heating region and a part of fresh air are mixed sucking and then blow into combustion furnace by wind turbine, at this moment there is one
Part hot wind is discharged to by exhaust tube in air, and the hot wind that air is discharged by exhaust tube is not no visible smoke.
2. the hot wind into combustion chamber enters air outlet box after low-oxygen burner heats, blow to ground by gap nozzle
Face, hot wind rush at ground with the speed of 20m/s, complete heat exchange when being contacted with ground.
It participates in burning again 3. the hot wind for losing kinetic energy by heat exchange is sucked back by wind turbine, because some hot wind is vented
Cylinder is discharged in air, and the air output of heating region is fewer than return air amount, therefore heating region is negative pressure state, ensures heating region production
Raw glance coal does not overflow, while having fresh air to fill into again, ensures the required necessary oxygen of burner operation, exhaust tube
Be equipped with control valve can according to Operating condition adjustment capacity how much, ensure heating region negative pressure do not spill over glance coal under conditions of
It reduces capacity to the greatest extent, achievees the effect that energy-saving and emission-reduction.
As the further design to the utility model, the air outlet box 5 is including bellows main body 502 and is located at bellows main body
The splicing bellows 503 of 502 both sides are provided with 4 gap nozzles in the bottom surface of bellows main body 502, in the bottom surface of splicing bellows 503
It is provided with 10 gap nozzles.Find that test section has heating non-uniform phenomenon in inventor's experiment, concrete numerical value is as follows：
Intermediate 200 DEG C of road table temperature, 55 DEG C of middle level temperature；Two 160 DEG C of dypass table temperature, middle level temperature 45 C；Through research
Decision is tested again after 8 tuyeres on intermediate bellows are blocked 4 with steel plate, and data are as follows：Intermediate 180 DEG C of road table temperature,
55 DEG C of middle level temperature, 175 DEG C of both sides pavement temperature, 51 DEG C of middle level temperature.
According to current test result, the utility model has carried out again the heating device air outlet of heater and reorganizer
Arrangement, concrete scheme are as follows：4 air outlets are set on heater in heating device bellows main body, and splicing bellows are equipped with 10
Air outlet strengthens the heating efficiency on both sides road surface, ensures the uniformity of construction road-surface heating.Reorganizer host heating device bellows
Main body (matching air box) is equipped with 1 air outlet, and splicing bellows are equipped with 10 air outlets, the heating energy on reinforcement ridge both sides ground
Power.Reorganizer subsidiary engine heating device matching air box is equipped with 10 air outlets, and splicing bellows are equipped with 2 air outlets, reinforce both sides
Expect the heating efficiency on ground among ridge.Consider the requirement of standardization of products seriation, above-mentioned three kinds of heating devices splice wind
Case is all general, i.e., 3 kinds of bellows main body coordinates 1 spelling to give a dinner for a visitor from afar case permutation and combination into 3 kinds of heating devices.
Further, the return air collecting region 7 includes close to wind turbine side inlet scoop 701 and close to combustion chamber outlet air one
Side inlet scoop 702, wherein the width close to wind turbine side inlet scoop 701 is 20mm, close to combustion chamber outlet air side inlet scoop 702
Width be 35mm.
It finds there is part heating region to be not carried out negative pressure (account for about heating plate 1/3) in experiment, has drip in the course of work
Green cigarette overflows, this region appears in combustor exit side, and the wind speed through the actually detected air outlet herein in scene reaches 20m/
S is more than the wind speed of other regions 15m/s, and air output is bigger than other regions, and heating efficiency is strong, the design of heating device return air inlet
When be evenly arranged, therefore combustor exit side return deficiency in draught, do not form negative pressure, lead to pitch smoke overflow.Through
Research inventor adjusts inlet scoop size at the scene, and increase smolders region return air amount to realize the negative pressure in this region.Restructuring examination
It is also more satisfactory to test effect, this region realizes that negative pressure, no glance coal are emerged.
Further, the air quantity of control combustion chamber air inlet and air outlet box gap nozzle air output ratio are 1.3: 1.It is adjusting
It tries to find that flame sensing signal is undesirable when burner, about 13 or so, ideal value should be 25；Pressure difference is before and after burner
400Pa does not reach theoretical pressure difference 500Pa；The reason of 850 DEG C of temperature is higher than 750 DEG C of design value, causes these phenomenons in burner hearth
Be into combustion chamber air capacity it is on the low side, it has been decided through consideration that increasing burner pressure by the way of reducing matching air box entrance opening dimension
Difference is stablized by this change afterburner flame sensing signal 25, but fire box temperature is also above design value, and when design enters combustion
The air quantity ratio for burning room and matching air box is 1:1, air inlet ratio is adjusted to 1.3 according to the above test data:1 is that comparison is reasonable
's.
Further, it is connected using fastener 13 between the bellows main body 502 and splicing bellows 503, the fastener 13
Including plug socket 1301 and the plug-in unit 1302 being matched therewith, plug socket is made of pedestal and the cylindrical body being connected on pedestal,
Pedestal and cylindrical body are that integral type connects, and are provided with strip-shaped hole along its length in cylindrical body, the plug-in unit in the form of sheets,
The end of plug-in unit is provided with blocking portion, and plug-in unit is inserted into strip-shaped hole.Compared to high temperature resistant bolt, the utility model application fastener into
Row connection, the occurrence of can effectively avoid " snap fastener " phenomenon that bolt is susceptible to, and then cause bolt that cannot dismantle, has
The advantages of being easily achieved fast quick-detach.
Further, the partition board 6 is heat-preservation cotton baffle.The wind turbine 9 is fixed by flange, is arranged in the lower section of flange
There is asbestos packing sheet 14, the heat preservation position of wind turbine is provided with bridge insulation thermal resistance hole 15.Burner mounting plate and wind turbine insulation portion method
Temperature drift when orchid work, more than 100 DEG C, site inspection combustion chamber insulating sections have solder skip, have after leading to combustion chamber mounting plate
Hot wind flow, through will weld again herein.
Existing burner mounting plate welds together with fan casing, forms confined space with burning stove outer covering, this is just deposited
In 1 heat bridge, the heat of fan casing can be transmitted on burner mounting plate, to completely cut off this partial heat, can will be burnt
Device mounting plate and wind turbine isolation, confined space, such burner mounting plate are welded to form by subsequent heat-preservation cotton baffle and wind turbine
A heat source is lacked, temperature can be lower.
Wind turbine flange temperature height is same as above ventilation blower contact, under wind turbine flange the main function of insulating layer be to transmission shaft every
Heat, as long as less than 75 DEG C of the temperature of transmission shaft (about 50-60 DEG C of experiment actual measurement transmission shaft operating temperature), meets design requirement,
Flange temperature, which is more than 100 DEG C, does not influence fan performance, and flange material can also bear this temperature.Because space is limited, need by
The burners attachment such as diesel pump is installed on wind turbine flange, therefore wind turbine flange temperature cannot be excessively high, it has been decided through consideration that wind turbine
Flange carries out bridge insulation thermal resistance processing, i.e., increases asbestos packing sheet 14 under wind turbine flange, and drill (bridge insulation thermal resistance in wind turbine insulation portion
Hole 15), completely cut off heat bridge, reduces heat conduction.
It takes or uses for reference prior art and can be realized in the part that do not addressed in aforesaid way.
Above only describes the basic principle of the utility model and preferred embodiments, it is noted that for this field
For technical staff, under the premise of not departing from the utility model structure, several modifications and improvements can also be made, these are also answered
This is considered as the scope of protection of the utility model.
Claims (7)
1. a kind of novel hypoxemia recycles road surface regenerative heater, it is characterised in that：Including shell, combustion is internally provided in shell
Room is burnt, the top of the combustion chamber is provided with air inlet and low-oxygen burner, and the bottom end of combustion chamber is provided with air outlet, in shell
Bottom be provided with air outlet box, air outlet is connected to air outlet box, and in the partition board that is internally provided with of shell, the partition board is by shell point
It is separated out return air collecting region and return air channel, wind turbine is provided at the top of return air collecting region, return air collecting region is by wind turbine and returns
The one end in wind channel is connected to, and the other end of return air channel is connected to the air inlet of combustion chamber；Exhaust is provided at the top of shell
Cylinder, the return air channel are connected to by a branched bottom with exhaust tube, and capacity adjusting flap is internally provided in exhaust tube,
Capacity adjusting flap is connect with turning knob；The low-oxygen burner includes kitchen range and injection channel, and injection channel is in radiation
Type is provided with nozzle one end of which is fixed on kitchen range on kitchen range, and diameter not equal circle is provided on the side wall in injection channel
Hole；Multiple gap nozzles are laid in the bottom interval of air outlet box, the gross area of the gap nozzle is less than return air collecting region
Area.
2. a kind of novel hypoxemia according to claim 1 recycles road surface regenerative heater, it is characterised in that：The air outlet box
Splicing bellows including bellows main body and positioned at bellows main body both sides are provided with 4 gap nozzles in the bottom surface of bellows main body,
The bottom surface of splicing bellows is provided with 10 gap nozzles.
3. a kind of novel hypoxemia according to claim 1 recycles road surface regenerative heater, it is characterised in that：The return air is received
Ji Qu includes close to wind turbine side inlet scoop and close to combustion chamber outlet air side inlet scoop, wherein close to wind turbine side inlet scoop
Width is 20mm, is 35mm close to combustion chamber outlet air side inlet scoop width.
4. a kind of novel hypoxemia according to claim 1 recycles road surface regenerative heater, it is characterised in that：Control combustion chamber
The air quantity and air outlet box gap nozzle air output ratio of air inlet are 1.3: 1.
5. a kind of novel hypoxemia according to claim 2 recycles road surface regenerative heater, it is characterised in that：The bellows master
The plug-in unit for including plug socket using fastener connection, the fastener between body and splicing bellows and being matched therewith, plug socket is by base
Seat and the cylindrical body composition being connected on pedestal, pedestal are that integral type connects with cylindrical body, in cylindrical body along its length
It is provided with strip-shaped hole, the plug-in unit is provided with blocking portion in the form of sheets, in the end of plug-in unit, and plug-in unit is inserted into strip-shaped hole.
6. a kind of novel hypoxemia according to claim 1 recycles road surface regenerative heater, it is characterised in that：The partition board is
Heat-preservation cotton baffle.
7. a kind of novel hypoxemia according to claim 1 recycles road surface regenerative heater, it is characterised in that：The wind turbine is logical
It crosses flange to fix, asbestos packing sheet is provided with below flange, the heat preservation position of wind turbine is provided with bridge insulation thermal resistance hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721300918.3U CN208038972U (en) | 2017-10-10 | 2017-10-10 | A kind of novel hypoxemia cycle road surface regenerative heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721300918.3U CN208038972U (en) | 2017-10-10 | 2017-10-10 | A kind of novel hypoxemia cycle road surface regenerative heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208038972U true CN208038972U (en) | 2018-11-02 |
Family
ID=63957563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721300918.3U Active CN208038972U (en) | 2017-10-10 | 2017-10-10 | A kind of novel hypoxemia cycle road surface regenerative heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208038972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518579A (en) * | 2018-12-07 | 2019-03-26 | 嘉鹏再升科技（深圳）股份有限公司 | A kind of road surface smoke removing device for hot reproducer on the spot |
-
2017
- 2017-10-10 CN CN201721300918.3U patent/CN208038972U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518579A (en) * | 2018-12-07 | 2019-03-26 | 嘉鹏再升科技（深圳）股份有限公司 | A kind of road surface smoke removing device for hot reproducer on the spot |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Novel low oxygen cycle road surface regenerative heater Effective date of registration: 20190404 Granted publication date: 20181102 Pledgee: Jilin nine rural commercial bank, Limited by Share Ltd Changchun branch Pledgor: JILIN JIAPENG GROUP CO., LTD. Registration number: 2019220000009 |
|
| PE01 | Entry into force 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: 20210910 Granted publication date: 20181102 Pledgee: Jilin nine rural commercial bank Limited by Share Ltd. Changchun branch Pledgor: JILIN JIAPENG GROUP Co.,Ltd. Registration number: 2019220000009 |
|
| PC01 | Cancellation 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: A new low oxygen circulating pavement regeneration heater Effective date of registration: 20210924 Granted publication date: 20181102 Pledgee: Jilin nine rural commercial bank Limited by Share Ltd. Changchun branch Pledgor: JILIN JIAPENG GROUP Co.,Ltd. Registration number: Y2021220000084 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |