CN201197922Y - Discharge apparatus for recycled dust in asphalt mixing plant - Google Patents
Discharge apparatus for recycled dust in asphalt mixing plant Download PDFInfo
- Publication number
- CN201197922Y CN201197922Y CNU2008200798350U CN200820079835U CN201197922Y CN 201197922 Y CN201197922 Y CN 201197922Y CN U2008200798350 U CNU2008200798350 U CN U2008200798350U CN 200820079835 U CN200820079835 U CN 200820079835U CN 201197922 Y CN201197922 Y CN 201197922Y
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- useless powder
- transitional storehouse
- spraying mechanism
- pitch
- dust
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Abstract
The utility model discloses a recycled dust discharging device in a bitumen mixing station, which comprises a spiral stirrer and a spray mechanism, wherein, the spiral stirrer comprises a spiral motor arranged at one side of the spiral stirrer and a screw rod connected with the spiral motor; a dust feeding opening is arranged above one end of the screw rod, and a dust discharging opening is arranged below the other end of the screw rod; a dust conveying pipe is communicated with the spiral stirrer through the dust feeding opening; the spray mechanism is arranged above the spiral stirrer; the bottom of the spray mechanism is provided with a plurality of spray nozzles; and the spray mechanism is communicated with the spiral stirrer through the spray nozzles, therefore, the utility model effectively solves the problems that the recycled dust has heavy raised dust and pollutes the environment, and the water sprayed on the recycled dust can be conveniently controlled through the spray nozzles arranged at the bottom of the spray mechanism, thereby the cost is further saved. In addition, the utility model also can realize automatic control, effectively lower the work intensity and improve the work efficiency.
Description
Technical field
The utility model relates to a kind of pitch mixing station and reclaims the dust emission device.
Background technology
Recently, the expressway construction development is more and more rapider, and the construction of bituminous paving spreads all over the world.Produce pitch and need use the pitch mixing station, the pitch mixing station can produce a large amount of dust in the mix operation, and these dust are unfavorable for environmental protection.Therefore, can be efficiently, the recovery powder of the eliminating pitch mixing station of economy, environmental protection becomes the key of pavement construction.
At present, mixing station reclaims the powder eliminating and mainly contains dried division and water division.Dried division airborne dust is big, bigger to the damage ratio of environment.The water division has two kinds again, and a kind of is dust to be added water stir into mud, gets in the treatment pond with slush pump then and precipitates; This water consumption is big, the discharge of wastewater inconvenience, and also waste water also causes certain pollution to environment.Another kind is to allow useless powder by a forced mixer blunge.The big or small bad control of this mode water yield when humidification reclaims powder, cost are also than higher, installation more complicated.
Therefore, be necessary to provide a kind of novel pitch mixing station to reclaim the dust emission device, to overcome above-mentioned defective.
The utility model content
The purpose of this utility model is, provides a kind of pitch mixing station to reclaim the dust emission device, and it can solve, and to reclaim the dust airborne dust big, problem of environment pollution caused, and can control easily and spray the water yield that reclaims dust, to save cost.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize, a kind of pitch mixing station reclaims the dust emission device, and described tapping equipment comprises duff pipe, and wherein, described tapping equipment also comprises:
Spiral agitator, described spiral agitator comprises screw motor that is arranged on the one side and the screw rod that is connected with described screw motor, and the top of this screw rod one end has useless powder charging aperture, the below of the other end has useless powder discharging opening, and described duff pipe is connected with described spiral agitator by described useless powder charging aperture;
Spraying mechanism, described spraying mechanism is arranged on the top of described spiral agitator, and described spraying mechanism bottom has a plurality of mouth sprays, and described spraying mechanism is connected with described spiral agitator by described mouth spray.
In preferred embodiment, described tapping equipment also comprises useless powder transitional storehouse, and described useless powder transitional storehouse is between described duff pipe and described spiral agitator, and the three is connected.
In preferred embodiment, link to each other by flexible pipe between described useless powder transitional storehouse and the described spiral agitator, the volume of described useless powder transitional storehouse is more than or equal to 1.5m
3
In preferred embodiment, described spraying mechanism comprises two horizontal tubes that are parallel to each other, a vertical tube, a water pump and a cistern; The closed at both ends of every described horizontal tube, bottom have above-mentioned a plurality of mouth spray, and described mouth spray is less in the aperture of an end of close described useless powder charging aperture, and be bigger near the aperture of described useless powder discharging opening one end; Described vertical tube is connected between described two horizontal tubes, and the three is connected, and described vertical tube top has a water inlet; One end of described water pump is connected with the water inlet of described vertical tube, and the other end is connected with described cistern.
In preferred embodiment, described spraying mechanism is 50-70cm near an end distance of described useless powder discharging opening from the distance of described useless powder discharging opening, and the position of the mouth spray on described two horizontal tubes is interlaced.
In preferred embodiment, on the pipeline between described water pump and the described water inlet manually-operated gate is installed also.
In preferred embodiment, described tapping equipment also comprises vibrator, and described vibrator is arranged on the bottom of described useless powder transitional storehouse.
In preferred embodiment, described tapping equipment also comprises controlling organization, is used to control the opening and closing of above-mentioned spraying mechanism and above-mentioned spiral agitator.
In preferred embodiment, described controlling organization comprises high charge level meter, low level-sensing device and magnetic valve, described high charge level meter is positioned at the top of described useless powder transitional storehouse, described low level-sensing device is positioned at the bottom of described useless powder transitional storehouse, and described magnetic valve is arranged on the pipeline between described water pump and the described water inlet; When described low level-sensing device detected the height arrival lower position of the useless powder in the described useless powder transitional storehouse, the described spraying mechanism of described solenoid control stopped water spray, and described screw motor is closed; When described high charge level meter detected the height arrival upper limit position of the useless powder in the described useless powder transitional storehouse, the described spraying mechanism of described solenoid control began water spray, and described screw motor starts.
In preferred embodiment, described controlling organization is controlled by control circuit, and described control circuit comprises screw motor control circuit, water pump control circuit, vibrator control circuit and spraying mechanism control circuit; Described screw motor control circuit comprises the high charge level switch and the low stuff level switch of corresponding above-mentioned high charge level meter of difference and low level-sensing device; When above-mentioned low level-sensing device detected useless powder in the above-mentioned useless powder transitional storehouse and is not less than above-mentioned lower position, described low stuff level switch was in closure state, otherwise described high charge level switch is in off-state; When above-mentioned high charge level meter detected useless powder in the above-mentioned useless powder transitional storehouse and arrives above-mentioned upper limit position, described high charge level switch was in closure state, otherwise described high charge level switch is in off-state.
Characteristics of the present utility model and advantage are:
It is by useless powder transitional storehouse, spiral agitator and spraying mechanism, can make recovery dust and water fully be stirred the moistening output in back, recovery dust airborne dust is big, problem of environment pollution caused thereby solved effectively, and the mouth spray that bottom spraying mechanism, is provided with, can control it easily and spray the water yield that reclaims on the dust, and then save cost.In addition, the utility model can also have been realized automatic control, reduces labour intensity effectively, increases work efficiency.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is the structural representation of tapping equipment of the present utility model;
Fig. 2 is the schematic top plan view of spraying mechanism of the present utility model;
Fig. 3 is a process chart of the present utility model;
Fig. 4 is a controlling organization schematic diagram of the present utility model;
Fig. 5 is a controlling organization circuit diagram of the present utility model.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.Wherein, identical parts adopt identical label.
Shown in Fig. 1-5, the utility model proposes a kind of pitch mixing station and reclaim the dust emission device, described tapping equipment comprises the duff pipe 1 that links to each other in regular turn, useless powder transitional storehouse 2, spiral agitator 3 and spraying mechanism.
The recovery dust that described duff pipe 1 is the pitch mixing station or the original outlet of discharging of similar dust, described duff pipe 1 has a defeated material inlet and defeated material outlet, above-mentioned recovery dust (useless powder) enters duff pipe 1 via the defeated material inlet of described duff pipe 1, and enters useless powder transitional storehouse 2 via defeated material outlet.
Described useless powder transitional storehouse 2 is the hopper type, and its volume is not less than 1.5m
3, to guarantee that system works is steady, to continue.The top of being somebody's turn to do useless powder transitional storehouse 2 has the capping (not shown), and these capping central authorities have feeding mouth, and above-mentioned defeated material outlet is connected with described feeding mouth by carrier pipe 11, because useless powder transitional storehouse 2 has this capping, can avoid reclaiming the dust airborne dust, protects environment.The top of described useless powder transitional storehouse 2 has high charge level meter 21, whether the useless powder that is used for detecting useless powder transitional storehouse 2 arrives upper limit position, the bottom has low level-sensing device 22, whether the useless powder that is used for detecting useless powder transitional storehouse 2 arrives the lower position, and the bottom at useless powder transitional storehouse 2 also is provided with vibrator Q, be used to prevent that useless powder from hardening, instability of flow influences the gumming effect.To be flexible coupling, link to each other by flexible pipe 24 between promptly described useless powder transitional storehouse 2 and the described spiral agitator 3 between described useless powder transitional storehouse 2 and the described spiral agitator 3 for good.
Described spiral agitator 3 comprises screw motor A that is arranged on the one side and the screw rod 33 that is connected with described screw motor A, above an end of this screw rod 33, has useless powder charging aperture 31, the below of the other end has useless powder discharging opening 32, recovery dust in the above-mentioned useless powder transitional storehouse 2 enters described spiral agitator 3 via described useless powder charging aperture 31, and the screw rod 33 of Tong Qinei is transported to useless powder discharging opening 32, enters at last in the recovery vehicle (not shown).
Described spraying mechanism is arranged on the top of described spiral agitator 3, and it is that 50-70cm is good near the end of described useless powder discharging opening 32 and the distance of described useless powder discharging opening 32, so that water and useless powder can fully stir.When mounted, can offer a mouth at spiral agitator 3 upper walls, the housing 48 of spraying mechanism is equipped with in welding on this mouthful.As shown in Figure 2, described spraying mechanism bottom has a plurality of mouth sprays 41, and described spraying mechanism is connected with described spiral agitator 3 by described mouth spray 41, water is sprayed onto on the described useless powder, makes the useless moistening discharging of powder.
Specifically be that described spraying mechanism comprises two horizontal tubes that are parallel to each other 42, vertical tube 43, a water pump 44 and a cistern 45.The closed at both ends of every horizontal tube 42, the bottom has above-mentioned a plurality of mouth spray 41, and be preferably, described mouth spray 41 is less near the aperture of useless powder charging aperture 31 1 ends (front end), aperture near useless powder discharging opening 32 1 ends (rear end) is bigger, and this is because if the front end aperture is bigger, can cause spraying water early stage making useless powder wetter too much, and if the useless powder discharging opening 32 of distance is far away, the situation of wet useless powder rotation will appear driving in the screw motor A of spiral agitator 3 so; In addition, the position of the mouth spray 41 on two horizontal tubes 42 is preferably interlaced, and the distance between the mouth spray 41 of every horizontal tube 42 can be about 150mm, it is steel pipe about 50mm that each horizontal tube 42 can be diameter, distance between two horizontal tubes 42 can be about 20mm, can be about 3mm near the aperture of the mouth spray 41 of useless powder discharging opening 32.Described vertical tube 43 is connected between described two horizontal tubes 42, and three's connection, and the three is the H type from the appearance, and described vertical tube 32 tops have a water inlet 431.One end of described water pump 44 is connected with the water inlet 431 of described vertical tube 43, and the other end is connected with described cistern 45, and the water in the cistern 45 is transported in vertical tube 43 and the horizontal tube 42, wherein said water pump 44 can be immersible pump.On the described water pump 44 manually-operated gate 46 is installed also, to prevent in the whipping process that the water yield forms mud or water shortage too much and forms airborne dust and cause the gumming poor effect; The defeated powder of water yield throttling adjustment by manually-operated gate 46 and agitating auger continous-stable stirs, and the dust that guarantees the outlet discharging does not flow slurry, airborne dust not; Economy, environmental protection.
Described tapping equipment also comprises controlling organization, is used to control the opening and closing of above-mentioned spraying mechanism and above-mentioned spiral agitator 3.Particularly, described controlling organization comprises above-mentioned high charge level meter 21, low level-sensing device 22 and magnetic valve 47, and described magnetic valve 47 is arranged on the pipeline between described water pump 44 and the described water inlet 321.When the height that detects the useless powder in the described useless powder transitional storehouse 2 when low level-sensing device 22 arrives the lower position, control described magnetic valve 47 and close and make described spraying mechanism stop water spray, screw motor A closes and spiral agitator 3 is stopped the rotation simultaneously; When the height that detects the useless powder in the described useless powder transitional storehouse 2 when high charge level meter 21 arrives upper limit position, control described magnetic valve 47 and open and make spraying mechanism begin water spray, screw motor A starts and drives spiral agitator 3 rotations simultaneously.
Described controlling organization also comprises two time relay SK1M, SK2M, this time relay SK2M is used to control above-mentioned vibrator Q, vibrator Q is started once at set intervals, so that useless powder can successfully enter spiral agitator 3 from useless powder transitional storehouse 2, and can in useless powder transitional storehouse 2, not deposit, wherein " a period of time " can be 10 minutes.And time relay SK1M is used to control the working time of vibrator Q.
As shown in Figure 5, described controlling organization can be realized that this control circuit comprises screw motor control circuit, water pump control circuit and vibrator control circuit by control circuit shown in Figure 5.Described screw motor control circuit comprises high charge level switch XW1 and low stuff level switch XW2.In Fig. 5, A is a screw motor, and B is a pump motor, and Q is a vibrator, and K is an electromagnetic switch.SK1M, SK2M are 5 seconds and 600 seconds time relays, PS1 is the duplex hand switch, PS2, ST1, ST2 are hand switch, XW1 is the high charge level switch, XW2 is low stuff level switch, in practice, can only represent here by the control of auxiliary reclay secondary as principle according to type XW1, the XW2 of level-sensing device.AK1M is the screw motor relay, and AK2M is the pump motor relay, and AK3M is the vibrator relay, and BK1M is middle guard relay.AF1F, AF2F, AF3F are overload protective relay.
Find out that by circuit theory at first crawl hand switch PS2 triggers pump motor relay AK2M to start the pump motor latching circuit, ability assurance equipment can operate as normal behind the starting mode of pump.Figure repeat circuit switch AK2 plays the interlocking effect, recovery powder in the useless powder transitional storehouse is not less than under the situation of lower position, promptly under the situation of low stuff level switch XW2 closure, guard relay BK1M and screw motor relay AK1M in the middle of crawl duplex hand switch PS1 triggers, the circuit self-locking starts, and BK1 and AK1 are self-lock switch, if at this moment water pump is not opened, relay switch AK2 often leaves, and middle guard relay BK1M can not self-locking, and the screw motor relay can only crawl work.
After middle guard relay BK1M and screw motor relay AK1M self-locking started, screw motor relay AK1M finished screw motor and starts automatically, quits work under the alternating action of high charge level switch XW1 and low stuff level switch XW2, realized automation control.Crawl hand switch ST1, ST2, circuit dead electricity, equipment downtime.
In the vibrator control circuit, relay AK3M, time relay SK1M, SK2M constitute intermittently start-up circuit, control vibrator Q work, after screw motor relay AK1M self-locking starts, closed intermittently start-up circuit, the vibrator Q discontinuous operation of starting of self-lock switch AK1, time relay SK1M is adjusted into 2-5 seconds, the control vibrator Q working time, time relay SK2M was adjusted into about 600 seconds, the control vibrator Q intermittent time.
After screw motor relay AK1M self-locking started in Fig. 5, self-lock switch AK1 closure was connected electromagnetic switch K, because water pump 44 starts back equipment ability operate as normal in the system, so electromagnetic switch K connects back spraying mechanism water spray, had guaranteed the reliability of work.
Describe the course of work of the present utility model below in detail:
At first crawl hand switch PS2 triggers pump motor relay AK2M to start the pump motor latching circuit, could assurance equipment after water pump 44 starts can operate as normal, relay switch AK2 plays the interlocking effect, that is, and and relay switch AK2 closure behind the crawl hand switch PS2.
Afterwards, crawl duplex hand switch PS1 is with guard relay BK1M in the middle of triggering, this moment self-lock switch BK1 closure, when low level-sensing device 22 detects recovery powder in the useless powder transitional storehouse 2 and is not less than the lower position, low stuff level switch XW2 closure, and along with the recovery powder in the useless powder transitional storehouse 2 increases gradually, when being detected its arrival upper limit position by high charge level meter 21, high charge level switch XW1 closure, make self-lock switch AK1 closure, trigger screw motor relay AK1M, vibrator relay AK3M and electromagnetic switch K promptly, make screw motor A rotation, vibrator Q intermitten and magnetic valve 47 are closed, that is to say, at this moment spiral agitator 3, vibrator Q and spraying mechanism are started working.
Then, when high charge level meter 21 detects recovery powder in the useless powder transitional storehouse 2 and arrives upper limit position, high charge level switch XW1 disconnects, and because self-lock switch AK1 is still closed, therefore spiral agitator 3, vibrator Q and spraying mechanism are still working on, and when low level-sensing device 22 detected recovery powder in the useless powder transitional storehouse 2 and arrives the lower position, low stuff level switch XW2 disconnected, self-lock switch AK1 is disconnected, and then spiral agitator 3, vibrator Q and spraying mechanism are quit work.Have only water pump 44 work this moment, keep 6-7 kilograms of hydraulic pressure.
Then enter next circulation.If tapping equipment is quit work, but crawl hand switch ST1 and ST2 make it disconnection and get final product.
In addition, recovery powder in useless powder transitional storehouse 2 is between upper limit position and lower position, and spiral agitator 3, vibrator Q and spraying mechanism be not when carrying out work, carry out work if wish it, this moment is crawl duplex hand switch PS1 again, make self-lock switch AK1 closure, so that spiral agitator 3, vibrator Q and spraying mechanism work disconnect up to low stuff level switch XW2.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations and the modification done under the prerequisite that does not break away from design of the present utility model and principle all should belong to the scope that the utility model is protected.
Claims (10)
1. a pitch mixing station reclaims the dust emission device, and described tapping equipment comprises duff pipe, it is characterized in that, described tapping equipment also comprises:
Spiral agitator, described spiral agitator comprises screw motor that is arranged on the one side and the screw rod that is connected with described screw motor, and the top of this screw rod one end has useless powder charging aperture, the below of the other end has useless powder discharging opening, and described duff pipe is connected with described spiral agitator by described useless powder charging aperture;
Spraying mechanism, described spraying mechanism is arranged on the top of described spiral agitator, and described spraying mechanism bottom has a plurality of mouth sprays, and described spraying mechanism is connected with described spiral agitator by described mouth spray.
2. pitch as claimed in claim 1 mixing station reclaims the dust emission device, it is characterized in that: described tapping equipment also comprises useless powder transitional storehouse, and described useless powder transitional storehouse is between described duff pipe and described spiral agitator, and the three is connected.
3. pitch as claimed in claim 2 mixing station reclaims the dust emission device, it is characterized in that: link to each other by flexible pipe between described useless powder transitional storehouse and the described spiral agitator, the volume of described useless powder transitional storehouse is more than or equal to 1.5m
3
4. reclaim the dust emission device as each described pitch mixing station of claim 1-3, it is characterized in that: described spraying mechanism comprises two horizontal tubes that are parallel to each other, a vertical tube, a water pump and a cistern;
The closed at both ends of every described horizontal tube, bottom have above-mentioned a plurality of mouth spray, and described mouth spray is less in the aperture of an end of close described useless powder charging aperture, and be bigger near the aperture of described useless powder discharging opening one end;
Described vertical tube is connected between described two horizontal tubes, and the three is connected, and described vertical tube top has a water inlet;
One end of described water pump is connected with the water inlet of described vertical tube, and the other end is connected with described cistern.
5. pitch as claimed in claim 4 mixing station reclaims the dust emission device, it is characterized in that: described spraying mechanism is 50-70cm near an end distance of described useless powder discharging opening from the distance of described useless powder discharging opening, and the position of the mouth spray on described two horizontal tubes is interlaced.
6. pitch as claimed in claim 4 mixing station reclaims the dust emission device, it is characterized in that: on the pipeline between described water pump and the described water inlet manually-operated gate is installed also.
7. pitch as claimed in claim 4 mixing station reclaims the dust emission device, and it is characterized in that: described tapping equipment also comprises vibrator, and described vibrator is arranged on the bottom of described useless powder transitional storehouse.
8. pitch as claimed in claim 4 mixing station reclaims the dust emission device, and it is characterized in that: described tapping equipment also comprises controlling organization, is used to control the opening and closing of above-mentioned spraying mechanism and above-mentioned spiral agitator.
9. pitch as claimed in claim 8 mixing station reclaims the dust emission device, it is characterized in that: described controlling organization comprises high charge level meter, low level-sensing device and magnetic valve, described high charge level meter is positioned at the top of described useless powder transitional storehouse, described low level-sensing device is positioned at the bottom of described useless powder transitional storehouse, and described magnetic valve is arranged on the pipeline between described water pump and the described water inlet;
When described low level-sensing device detected the height arrival lower position of the useless powder in the described useless powder transitional storehouse, the described spraying mechanism of described solenoid control stopped water spray, and described screw motor is closed;
When described high charge level meter detected the height arrival upper limit position of the useless powder in the described useless powder transitional storehouse, the described spraying mechanism of described solenoid control began water spray, and described screw motor starts.
10. pitch as claimed in claim 9 mixing station reclaims the dust emission device, it is characterized in that: described controlling organization is controlled by control circuit, and described control circuit comprises screw motor control circuit, water pump control circuit, vibrator control circuit and spraying mechanism control circuit;
Described screw motor control circuit comprises the high charge level switch and the low stuff level switch of corresponding above-mentioned high charge level meter of difference and low level-sensing device;
When above-mentioned low level-sensing device detected useless powder in the above-mentioned useless powder transitional storehouse and is not less than above-mentioned lower position, described low stuff level switch was in closure state, otherwise described high charge level switch is in off-state;
When above-mentioned high charge level meter detected useless powder in the above-mentioned useless powder transitional storehouse and arrives above-mentioned upper limit position, described high charge level switch was in closure state, otherwise described high charge level switch is in off-state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200798350U CN201197922Y (en) | 2008-04-09 | 2008-04-09 | Discharge apparatus for recycled dust in asphalt mixing plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200798350U CN201197922Y (en) | 2008-04-09 | 2008-04-09 | Discharge apparatus for recycled dust in asphalt mixing plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201197922Y true CN201197922Y (en) | 2009-02-25 |
Family
ID=40449077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200798350U Expired - Lifetime CN201197922Y (en) | 2008-04-09 | 2008-04-09 | Discharge apparatus for recycled dust in asphalt mixing plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201197922Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755849A (en) * | 2012-07-30 | 2012-10-31 | 西安华江冶金化工设备有限公司 | Dust humidifying and stirring device |
| CN106702854A (en) * | 2016-12-15 | 2017-05-24 | 安徽水利嘉和建筑工程有限公司 | Asphalt mixing station recycled powder treatment device |
| CN107178025A (en) * | 2017-07-13 | 2017-09-19 | 赵佳丽 | Pitch sub-material for producing modified pitch stirs material drain system |
| CN109423945A (en) * | 2017-09-04 | 2019-03-05 | 诸暨马谷亲科技有限公司 | Pitch sub-material for producing modified pitch stirs material drain system |
-
2008
- 2008-04-09 CN CNU2008200798350U patent/CN201197922Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755849A (en) * | 2012-07-30 | 2012-10-31 | 西安华江冶金化工设备有限公司 | Dust humidifying and stirring device |
| CN106702854A (en) * | 2016-12-15 | 2017-05-24 | 安徽水利嘉和建筑工程有限公司 | Asphalt mixing station recycled powder treatment device |
| CN107178025A (en) * | 2017-07-13 | 2017-09-19 | 赵佳丽 | Pitch sub-material for producing modified pitch stirs material drain system |
| CN109423945A (en) * | 2017-09-04 | 2019-03-05 | 诸暨马谷亲科技有限公司 | Pitch sub-material for producing modified pitch stirs material drain system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Jun Inventor before: Ma Jun |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: No. 1 Engineering Co., Ltd. of FHEC of CCCC Assignor: CCCC First Highway Engineering Co., Ltd. Contract record no.: 2010990000744 Denomination of utility model: Discharge apparatus for recycled dust in asphalt mixing plant Granted publication date: 20090225 License type: Exclusive License Record date: 20100909 |
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| CX01 | Expiry of patent term |
Granted publication date: 20090225 |
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| CX01 | Expiry of patent term |