CN204702237U - A kind of powder automatic discharge apparatus - Google Patents
A kind of powder automatic discharge apparatus Download PDFInfo
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- CN204702237U CN204702237U CN201520305452.0U CN201520305452U CN204702237U CN 204702237 U CN204702237 U CN 204702237U CN 201520305452 U CN201520305452 U CN 201520305452U CN 204702237 U CN204702237 U CN 204702237U
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- powder
- measuring chute
- control module
- feed bin
- filtering net
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- 239000000843 powder Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 9
- 239000007858 starting material Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 abstract description 10
- 239000003570 air Substances 0.000 description 19
- 238000005303 weighing Methods 0.000 description 7
- 238000003828 vacuum filtration Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The utility model provides a kind of powder automatic discharge apparatus, it comprises feed bin, measuring chute, vacuum extractor, motor and controller, described vacuum extractor comprises interconnective vacuum pump and filter, described filter is built in feed bin, measuring chute is installed on the below of feed bin, motor and vacuum pump, controller is electrically connected, controller controls motor driven vacuum pump and vacuumizes feed bin, powder sucks in feed bin, and be isolated from outside filter, powder falls into measuring chute from bin bottom and weighs, when reaching setting weight value, controller drives vacuum pump out of service to stop charging, and the powder in measuring chute is derived.By each functional module in controller, respectively Automated condtrol is carried out to each parts of drawing mechanism, according to the powder weight in feed bin or capacity, the process of automatic control charging, according to the powder weight in measuring chute, automation controlled reset is carried out to the charging of the powder of measuring chute and discharging, thus realizes the Automated condtrol of powder discharging.
Description
Technical field
The utility model relates to powdery type material feeding device, refers to a kind of powder automatic discharge apparatus especially.
Background technology
In the pressed powder Hybrid Production Process such as existing ink, coating, relate to the loading problems of pressed powder (as pigment, dyestuff, wax powder, aerosil etc.), current powder addition process is mainly fed in raw material by manual weighing, namely dispersed with stirring in dispersion tank is directly poured into after the powder that manual weighing need add well, but weigh and batch turning process in all can cause dust from flying, to air born pollution, harm is produced to the health of operator simultaneously.There is the manufacturer of certain scale reinforced closet and the external world can be separated, and gas exhaust duct is placed above dispersion tank, the dust flown upward in air is extracted out by freeing pipe by the adsorption affinity utilizing vacuum pump to produce, again through water treatment, the pollution that dust from flying causes air can be reduced like this, but still when being difficult to avoid weighing, powder flies upward the pollution to air, and the hidden danger of the water pollutions caused after bringing water treatment.
Utility model content
Based on the deficiencies in the prior art, main purpose of the present utility model is to provide a kind of powder automatic discharge apparatus, reach the object of vacuum filtration suction, accurate-metering separated powder material, exempt the division of labor to weigh, reduce and artificially weigh error, and avoid powder material to pollute external environment in reinforced process, and realize automation charging process.
The utility model provides a kind of powder automatic discharge apparatus, it comprises feed bin, measuring chute, vacuum extractor, motor and controller, described vacuum extractor comprises interconnective vacuum pump and filter, described filter is built in feed bin, measuring chute is installed on the below of feed bin, motor and vacuum pump, controller is electrically connected, controller controls motor driven vacuum pump and vacuumizes feed bin, powder sucks in feed bin, and be isolated from outside filter, powder falls into measuring chute from bin bottom and weighs, when reaching setting weight value, controller drives vacuum pump out of service to stop charging, and the powder in measuring chute is derived.
Preferably, have additional filtering net between described feed bin and measuring chute, described filtering net is connected with motor, drives filtering net shake and the powder of bin bottom is fallen into measuring chute by motor.
Preferably, have additional discharge valve between described feed bin and measuring chute, it is assemblied in the below of filtering net, discharge valve is electrically connected with motor, controller, when powder fills feed bin, controller starter motor drives discharge valve to open, and the powder on filtering net can be imported in measuring chute.
Preferably, described measuring chute is equiped with metering system, its mensuration falls into the weight of the powder of measuring chute and shows.
Preferably, one end of described feed bin offers material sucking port, from material sucking port inhalation of dust.
Preferably, the sidewall of described measuring chute comprises oscillator further, described oscillator is electrically connected with motor, by motor driving oscillator, the powder on measuring chute inwall can be shaken off the bottom into measuring chute.
Preferably, the lower end of described measuring chute offers bleeder valve, and can be used for derives the powder in measuring chute.
Preferably, described controller comprise central process unit and be electrically connected with it respectively vacuumize control module, filtering net control module, oscillator control module, discharge valve control module, metering control module, wherein, vacuumize control module to be electrically connected with vacuum pump, filtering net control module is electrically connected with filtering net, oscillator control module is electrically connected with oscillator, discharge valve control module is electrically connected with discharge valve, metering control module and metering system, filtering net control module, discharge valve control module is electrically connected, each parts are driven to run by each control module, when the powder that metering system detects in measuring chute reaches setting value, central process unit is fed back to by metering control module, central process unit sends and stops the signal of pan feeding to filtering net control module and discharge valve control module, filtering net control module is driven to stop driving filtering net shake, discharge valve control module is driven to close discharge valve, thus stop to measuring chute charging.
Compared with prior art, the feeding device of a kind of vacuum filtration powder of the utility model, it is provided with the measuring chute of separable feed bin, in feed bin, by vacuum extractor, vacuum pumping is carried out to it, make feed bin keep vacuum, easy inhalation of dust material, powder adopts vacuum pneumatic conveying principle in reinforced process, without dust from flying, powder is avoided to fly upward pollution to air; In feed bin, be provided with a filter be communicated with vacuum pump, make vacuum pump in feed bin vacuum time, powder is isolated in outside filter, avoids, in reinforced process, being sucked up to outside in powder entrained air, workshop inner air and outer air is caused to be polluted, also prevent powder to leak and cause waste, powder and air are separated by filter, powder declines into the bottom of feed bin in aspiration procedure.On the other hand, filtering net is connected by bent axle with motor, and powder vibrations are fallen into measuring chute, reduces large material impurity in powder and, on the impact of ink quality, has both played the effect of sieving, and turn improved the efficiency that powder falls into.The side of measuring chute is also provided with oscillator, by the operation of oscillator, is shaken off by the powder be attached on measuring chute inwall, avoids powder to remain on the inwall of measuring chute, improves the accuracy rate of metering.By measuring chute precise, instead of existing manual weighing, decrease the drawback that manual weighing easily slips up.By each functional module in controller, respectively Automated condtrol is carried out to each parts of drawing mechanism, according to the powder weight in feed bin or capacity, the process of automatic control charging, according to the powder weight in measuring chute, automation controlled reset is carried out to the charging of the powder of measuring chute and discharging, thus realizes the Automated condtrol of powder discharging.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model powder automatic discharge apparatus;
Fig. 2 is the circuit module block diagram of the controller of the utility model powder automatic discharge apparatus.
Detailed description of the invention
With reference to shown in Fig. 1-2, the utility model provides a kind of powder automatic discharge apparatus, it comprises feed bin 1, vacuum extractor 2, measuring chute 3, motor 4 and controller 5, described vacuum extractor 2 comprises interconnective vacuum pump 20 and filter 21, described filter 21 is built in feed bin 1, measuring chute 3 is installed on the below of feed bin 1, motor 4 and vacuum pump 30, controller 5 is electrically connected, controller 5 controls motor 4 and drives vacuum pump 20 pairs of feed bins 1 to vacuumize, powder sucks in feed bin 1, and be isolated from outside filter 21, powder falls into measuring chute 3 and weighs bottom feed bin 1, when reaching setting weight value, controller 5 drives vacuum pump 20 out of service to stop charging, and the powder in measuring chute 3 is derived.
Wherein, described feed bin 1 is set up on support, its one end offers material sucking port 10, material sucking port 10 is downward-sloping, can suck from bottom to top in feed bin 1 to make the powder of ink or coating, the air being mixed with powder sucks from material sucking port 10, and powder is isolated in outside the outer wall of filter 21, falls into the bottom of feed bin 1.Vacuum pump 20 is connected with filter 21, starter motor 4 drives vacuum pump 20, whole feed bin 1 is vacuumized, air is drawn out of from from filter 21, filter 31 by powder and air completely isolated, make whole feed bin be in vacuum state, powder is isolated in outside filter 21, avoid it to be pumped to outside by vacuum pump or external pipe, prevent powder to be sucked up to the outside of feeding device, cause workshop environment pollution.
Preferably, described measuring chute 3 is assemblied in below feed bin 1, for loading the powder fallen into from feed bin 1, and weighs the powder loaded.The lower end of described feed bin 1 offers discharging opening, discharge valve 40 is had additional between described feed bin 1 and measuring chute 3, described discharge valve 40 is electrically connected with motor 4, controller 5, start-up connector 5, motor 4 can drive discharge valve 40 to open from both sides, falls among measuring chute 3 to make the powder bottom feed bin 1.By unlatching or the closedown of discharge valve 40, control the carrying of the powder in feed bin 1, when opening discharge valve 40, powder falls into measuring chute 3 from feed bin 1, when closing discharge valve 40, by feed bin 1 and measuring chute 3 isolated, make the powder sucked from material sucking port 10 fall into the bottom of feed bin 1.
The top of described discharge valve 40 has additional filtering net 41, described filtering net 41 is electrically connected with motor 4, filtering net 41 is driven to shake running by motor 4, make its filtering net 41 in dither process, accelerate the whereabouts of powder, powder bottom feed bin 1 is sieved, and the impurity of isolating larger particles falls into measuring chute 3.When powder fills feed bin 1, starter motor 4 drives discharge valve 40 to open, and the powder on filtering net 41 can be fallen into measuring chute 3.
Described measuring chute 3 is equiped with metering system 32, and its mensuration falls into the weight of the powder of measuring chute 3 and shows.Described metering system 32 is installed on the lateral wall of measuring chute 3, which is provided with read-out, can show the powder weight in measuring chute 3.
The lower end of described measuring chute 3 offers bleeder valve 33, and can be used for derives the powder in measuring chute.Bleeder valve 33 is electrically connected with controller 5, can automatic or manual switch.In charging process, controller 5 drives the switch of bleeder valve 33 to control the charging of powder material, when metering system 32 powder weight shown in measuring chute 3 reaches setting value, controller 5 is according to metering system 32 feedback signal, send valve opening signal and drive unlatching bleeder valve 33, the powder in measuring chute 3 is drawn off.
The outer wall of described measuring chute 3 is equiped with oscillator 34, and it is connected with motor 4, drives it to operate by motor 4.Start oscillator 34, whole measuring chute 3 is shaken, and the powder shake sticking in measuring chute inwall is fallen into the bottom of measuring chute, ensure, in the bucket wall that powder can not remain in measuring chute 3 and dead angle, to improve the accuracy rate of metering discharging.
Described controller 5 comprise central process unit 50 and be electrically connected with it respectively vacuumize control module 51, filtering net control module 52, oscillator control module 53, discharge valve control module 54, metering control module 55, wherein, vacuumize control module 51 to be electrically connected with vacuum pump 20, control the operation of vacuum pump 20, drive the opening and closing of vacuum pump 20; Filtering net control module 52 is connected with filtering net 41, drives filtering net 41 to shake among powder to measuring chute 3; Oscillator control module 53 is electrically connected with oscillator 34, starts oscillator 34 and drives whole measuring chute 3 to shake, make the powder material on the inwall of measuring chute fall into the bottom of measuring chute, avoid powder to remain on bulkhead; Discharge valve control module 54 is electrically connected with discharge valve 40, is controlled unlatching or the closedown of discharge valve 40 by discharge valve control module 54; Metering control module 55 is electrically connected with metering system 32, filtering net control module 52, discharge valve control module 54, each parts are driven to run by each control module, when the powder that metering system 32 detects in measuring chute 3 reaches setting value, central process unit 50 is fed back to by metering control module 55, central process unit 50 sends and stops the signal of pan feeding to filtering net control module 52 and discharge valve control module 54, filtering net control module 52 is driven to stop driving filtering net shake, drive discharge valve control module 54 to close discharge valve, thus stop to measuring chute 3 charging.By the negative feedback control of metering control module 55, automatically adjust charging and the discharging of measuring chute 3, realize the precision to quantitative feeding discharging, Automated condtrol, for automated production is provided convenience.
The simple working process describing the feeding device of described vacuum filtration powder below:
First, vacuum pump 20 is connected by pipe-and-filter 21, starter motor 4, vacuumizes control module 51 and drives vacuum pump 20 to run, and vacuum pump 20 pairs of feed bins 1 vacuumize, air sucking-off from filter 21, powder is isolated in outside filter 21, makes whole feed bin 1 keep vacuum state, contributes to the suction of powder, powder falls into the bottom of feed bin 1, and powder is separated with air by filter 21 completely, when feed bin 1 filled by powder, vacuumizing control module 51 drives vacuum pump 20 to quit work, stop suction, discharge valve control module 54 starts discharge valve 40 and opens, simultaneously, filtering net control module 52 controlled filter net 41 shakes, powder in feed bin is fallen among measuring chute 3 in the shake of filtering net 41, when the powder material collected in measuring chute 3 reaches setting weight, discharge valve control module 54 controls discharge valve 40 and closes, stop to measuring chute 3 charging, finally, discharge valve control module 54 drives bleeder valve 33 to open, powder in measuring chute 3 is drawn off, and opened by oscillator control module 53 driving oscillator 34, by shaking the inwall of oscillator 34, the powder on the inwall of measuring chute 3 is made to shake off bottom into measuring chute 3, powder is avoided to remain in bulkhead or dead angle, when metering system 32 powder material weighed in measuring chute 3 reaches setting value, feed back to central process unit 50, central process unit 50 sends and stops the signal of pan feeding to filtering net control module 52 and discharge valve control module 54, filtering net control module 52 is driven to stop driving filtering net shake, discharge valve control module 54 is driven to close discharge valve, thus stop to measuring chute 3 charging, and open bleeder valve 33, powder load weighted in measuring chute is delivered in each dispersion tank.
The feeding device of a kind of vacuum filtration powder of the utility model, it is provided with the measuring chute of separable feed bin, in feed bin, by vacuum extractor, vacuum pumping is carried out to it, feed bin is made to keep vacuum, easy inhalation of dust material, powder adopts vacuum pneumatic conveying principle in reinforced process, without dust from flying, avoids powder to fly upward pollution to air; In feed bin, be provided with a filter be communicated with vacuum pump, make vacuum pump in feed bin vacuum time, powder is isolated in outside filter, avoids, in reinforced process, being sucked up to outside in powder entrained air, workshop inner air and outer air is caused to be polluted, also prevent powder to leak and cause waste, powder and air are separated by filter, powder declines into the bottom of feed bin in aspiration procedure.On the other hand, filtering net is connected by bent axle with motor, and powder vibrations are fallen into measuring chute, and in minimizing powder, large material impurity is on the impact of ink quality; Both play the effect of sieving, turn improve the efficiency that powder falls into.The side of measuring chute is also provided with oscillator, by the operation of oscillator, is shaken off by the powder be attached on measuring chute inwall, avoids powder to remain on the inwall of measuring chute, improves the accuracy rate of metering.By measuring chute precise, instead of existing manual weighing, decrease the drawback that manual weighing easily slips up.By each functional module in controller, respectively Automated condtrol is carried out to each parts of drawing mechanism, according to the powder weight in feed bin or capacity, the process of automatic control charging, according to the powder weight in measuring chute, automation controlled reset is carried out to the charging of the powder of measuring chute and discharging, thus realizes the Automated condtrol of powder discharging.
Claims (8)
1. a powder automatic discharge apparatus, it is characterized in that comprising feed bin, measuring chute, vacuum extractor, motor and controller, described vacuum extractor comprises interconnective vacuum pump and filter, described filter is built in feed bin, measuring chute is installed on the below of feed bin, motor and vacuum pump, controller is electrically connected, controller controls motor driven vacuum pump and vacuumizes feed bin, powder sucks in feed bin, and be isolated from outside filter, powder falls into measuring chute from bin bottom and weighs, when reaching setting weight value, controller drives vacuum pump out of service to stop charging, and the powder in measuring chute is derived.
2. powder automatic discharge apparatus according to claim 1, it is characterized in that: between described feed bin and measuring chute, have additional filtering net, described filtering net is connected with motor, drives filtering net shake and the powder of bin bottom is fallen into measuring chute by motor.
3. powder automatic discharge apparatus according to claim 2, it is characterized in that: between described feed bin and measuring chute, have additional discharge valve, it is assemblied in the below of filtering net, discharge valve is electrically connected with motor, controller, when powder fills feed bin, controller starter motor drives discharge valve to open, and the powder on filtering net can be imported in measuring chute.
4. powder automatic discharge apparatus according to claim 3, is characterized in that: described measuring chute is equiped with metering system, and its mensuration falls into the weight of the powder of measuring chute and shows.
5. powder automatic discharge apparatus according to claim 1, is characterized in that: one end of described feed bin offers material sucking port, from material sucking port inhalation of dust.
6. powder automatic discharge apparatus according to claim 4, it is characterized in that: the sidewall of described measuring chute comprises oscillator further, described oscillator is electrically connected with motor, by motor driving oscillator, the powder on measuring chute inwall can be shaken off the bottom into measuring chute.
7. powder automatic discharge apparatus according to claim 6, is characterized in that: the lower end of described measuring chute offers bleeder valve, and can be used for derives the powder in measuring chute.
8. powder automatic discharge apparatus according to claim 7, it is characterized in that: described controller comprise central process unit and be electrically connected with it respectively vacuumize control module, filtering net control module, oscillator control module, discharge valve control module, metering control module, wherein, vacuumize control module to be electrically connected with vacuum pump, filtering net control module is electrically connected with filtering net, oscillator control module is electrically connected with oscillator, discharge valve control module is electrically connected with discharge valve, metering control module and metering system, filtering net control module, discharge valve control module is electrically connected, each parts are driven to run by each control module, when the powder that metering system detects in measuring chute reaches setting value, central process unit is fed back to by metering control module, central process unit sends and stops the signal of pan feeding to filtering net control module and discharge valve control module, filtering net control module is driven to stop driving filtering net shake, discharge valve control module is driven to close discharge valve, thus stop to measuring chute charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520305452.0U CN204702237U (en) | 2015-05-12 | 2015-05-12 | A kind of powder automatic discharge apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520305452.0U CN204702237U (en) | 2015-05-12 | 2015-05-12 | A kind of powder automatic discharge apparatus |
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| CN204702237U true CN204702237U (en) | 2015-10-14 |
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| CN201520305452.0U Expired - Fee Related CN204702237U (en) | 2015-05-12 | 2015-05-12 | A kind of powder automatic discharge apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829518A (en) * | 2017-03-22 | 2017-06-13 | 东华工程科技股份有限公司 | A kind of anti-moisture absorption, dustless, accurate feed hopper system |
| CN106994318A (en) * | 2017-05-27 | 2017-08-01 | 湖北华丹医药科技股份有限公司 | A kind of vacuum feed system and device efficiently, practical |
| CN107415188A (en) * | 2017-05-16 | 2017-12-01 | 永高股份有限公司 | One kind injection production line state monitoring device |
| CN108190522A (en) * | 2018-01-11 | 2018-06-22 | 广东海中新能源设备股份有限公司 | A kind of superfine powder dynamic measuring feeding system of anti-airborne dust |
| CN109484885A (en) * | 2018-12-28 | 2019-03-19 | 江阴市天悦粉体科技有限公司 | A kind of cooling feeding device of powder |
| CN110560463A (en) * | 2019-09-30 | 2019-12-13 | 成都市新利豪建材有限公司 | Feed bin suitable for building refuse disposal site |
| CN112798764A (en) * | 2021-01-22 | 2021-05-14 | 宁波大禾仪器有限公司 | Automatic powder adding shrinkage testing equipment |
| CN114538142A (en) * | 2022-03-01 | 2022-05-27 | 北京康普锡威科技有限公司 | Quantitative ultrafine powder feeding device and method |
| CN115451662A (en) * | 2022-09-02 | 2022-12-09 | 大连北方互感器集团有限公司 | Vacuum drying operation process of silicon micropowder pre-drying system |
-
2015
- 2015-05-12 CN CN201520305452.0U patent/CN204702237U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829518A (en) * | 2017-03-22 | 2017-06-13 | 东华工程科技股份有限公司 | A kind of anti-moisture absorption, dustless, accurate feed hopper system |
| CN107415188A (en) * | 2017-05-16 | 2017-12-01 | 永高股份有限公司 | One kind injection production line state monitoring device |
| CN107415188B (en) * | 2017-05-16 | 2019-07-02 | 永高股份有限公司 | A kind of injection molding production line state monitoring device |
| CN106994318A (en) * | 2017-05-27 | 2017-08-01 | 湖北华丹医药科技股份有限公司 | A kind of vacuum feed system and device efficiently, practical |
| CN108190522A (en) * | 2018-01-11 | 2018-06-22 | 广东海中新能源设备股份有限公司 | A kind of superfine powder dynamic measuring feeding system of anti-airborne dust |
| CN108190522B (en) * | 2018-01-11 | 2024-04-26 | 广东海中新能源设备股份有限公司 | Prevent superfine powder dynamic measurement feeding system of raise dust |
| CN109484885B (en) * | 2018-12-28 | 2024-04-19 | 道谷(江苏)新材料科技有限公司 | Powder cooling feed arrangement |
| CN109484885A (en) * | 2018-12-28 | 2019-03-19 | 江阴市天悦粉体科技有限公司 | A kind of cooling feeding device of powder |
| CN110560463A (en) * | 2019-09-30 | 2019-12-13 | 成都市新利豪建材有限公司 | Feed bin suitable for building refuse disposal site |
| CN112798764A (en) * | 2021-01-22 | 2021-05-14 | 宁波大禾仪器有限公司 | Automatic powder adding shrinkage testing equipment |
| CN114538142A (en) * | 2022-03-01 | 2022-05-27 | 北京康普锡威科技有限公司 | Quantitative ultrafine powder feeding device and method |
| CN115451662A (en) * | 2022-09-02 | 2022-12-09 | 大连北方互感器集团有限公司 | Vacuum drying operation process of silicon micropowder pre-drying system |
| CN115451662B (en) * | 2022-09-02 | 2023-10-31 | 大连北方互感器集团有限公司 | Vacuum drying operation process of silica micropowder pre-drying system |
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Address after: 518000 Hangwei Avenue, Shangwu Community, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Haizhonghui New Material Technology Co.,Ltd. Address before: 518108 No. 41 Hangwei Avenue, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Haizhonghui Ink Products Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 |