CN206420281U - A kind of drying equipment - Google Patents
A kind of drying equipment Download PDFInfo
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- CN206420281U CN206420281U CN201621445796.2U CN201621445796U CN206420281U CN 206420281 U CN206420281 U CN 206420281U CN 201621445796 U CN201621445796 U CN 201621445796U CN 206420281 U CN206420281 U CN 206420281U
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- conveyer belt
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Abstract
This application discloses a kind of drying equipment, drying for coal, it is characterized in that, at least include two drying units, the drying unit includes hothouse, the conveyer belt for conveying coal is provided with the hothouse, the hot air supply device for providing hot blast into the hothouse, and for driving the drive device of the conveying Tape movement；The hothouse connection of drying unit described in adjacent two, and material guide mechanism is provided between the conveyer belt of drying unit described in adjacent two, the coal on the conveyer belt by one of them drying unit is oriented to the conveyer belt of another drying unit.The drying equipment that the utility model is provided, improves the efficiency that wet coal is dried.
Description
Technical field
The application is related to technical field of drying, more particularly to a kind of drying equipment, the drying for coal.
Background technology
Coal needs to carry out coal property test between use, its be specially coal in bulk is carried out collection of sample, sample preparation and
Analysis.Wherein, during sample preparation, it is an important step that sample, which is dried,.
However, for high humility coal sample, in the drying process of coal sample, coal sample easily causes the glutinous stifled of equipment, thus
The unstable of drying equipment can be caused, even more so that coal sample loses the representativeness of itself.
In order to solve the above problems, in the prior art generally by being reused after drying naturally, dry naturally when
Between need one to two days, continuous waste of manpower, and the time is very long, can not meet and is actually needed.
Therefore, a kind of drying equipment for improving wet coal drying efficiency, is that those skilled in the art's technology urgently to be resolved hurrily is asked
Topic.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of drying equipment, the drying efficiency of wet coal is improved.
The technical scheme that the utility model is provided is as follows：
A kind of drying equipment, the drying for coal, it is characterised in that at least including two drying units,
The drying unit include hothouse, the conveyer belt for conveying coal is provided with the hothouse, for
The hot air supply device of hot blast is provided in the hothouse, and for driving the drive device of the conveying Tape movement；
The hothouse connection of drying unit described in adjacent two, and set between the conveyer belt of drying unit described in adjacent two
Material guide mechanism is equipped with, it is described dry single that the coal on the conveyer belt by one of them drying unit is oriented to another
On the conveyer belt of member.
Preferably, the hothouse connection of drying unit described in adjacent two is specifically, drying unit described in adjacent two is common
Use same hothouse.
Preferably, the hothouse includes the support body for being used to install the conveyer belt, and wraps up the insulation of the support body
Covering, the drive device is installed on the support body with the hot air supply device, is set on the insulation covering
It is equipped with charging aperture and discharging opening.
Preferably, the drive device include motor and transmission mechanism, the transmission mechanism include drive roll with it is driven
Roller, the drive roll and the driven voller are installed on the support body, the conveyer belt be set in the drive roll with it is described
On driven voller, the motor is arranged on the support body and in the dry outdoor, and the motor is all described for driving
The drive roll of drying unit is rotated.
Preferably, striker plate is provided with the both sides of the conveyer belt, the striker plate is arranged on the support body.
Preferably, the material guide mechanism includes the stock guide being arranged on support body, and the stock guide is arranged on the conveying
Tail end with feed direction, is provided with the first vibrator of the guide panel vibration for making on the stock guide.
Preferably, it is additionally provided with assisted heating device above the conveyer belt, the assisted heating device is used for pair
The coal that the conveyer belt is conveyed carries out auxiliary drying.
Preferably, dehumidifier apparatus is additionally provided with the insulation covering, the dehumidifier apparatus is used to extract described do
Dry indoor humid air.
Preferably, be provided with feed arrangement at the charging aperture on the insulation covering, the feed arrangement include into
Hopper, is provided with guide pad on the feed hopper inwall, and the guide pad is used to the coal in the feed hopper being layered on institute
State on conveyer belt.
Preferably, the regulation of the thickness for adjusting the coal for entering the conveyer belt is additionally provided with the feed hopper
Plate.
The drying equipment that the utility model is provided, when wet coal is dried, wet coal is introduced into one of dry single
Member, i.e. conveyed on the conveyer belt on the first drying unit wherein of wet coal, during conveying, in warm-air supply dress
Put and dried under provided hot blast, when wet coal under first drying unit by drying after, entered by the effect of material guide mechanism
On the conveyer belt for entering second drying unit, enter second drying unit from the conveyer belt of first drying unit in wet coal
During on conveyer belt, coal can be stir-fried under the guide effect of material guide mechanism, i.e. the conveying in first drying unit
The top that coal with upper bottom portion is turned to coal seam is conveyed on the conveyer belt of second drying unit, second drying unit
In hot air supply device provide hot blast the coal on conveyer belt is dried, in whole process, not only extend coal
Time of delivery, and by being stir-fried to wet coal, it is to avoid the situation that bottom can not be dried, therefore, compared with prior art
Compared with the drying efficiency of wet coal is high.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of drying unit in the utility model embodiment；
When Fig. 2 uses five drying units for the drying equipment that the utility model embodiment is provided and shares a hothouse
Internal structure schematic diagram；
When Fig. 3 uses five drying units for the drying equipment that the utility model embodiment is provided and shares a hothouse
External view；
Fig. 4 for Fig. 3 K to diagram；
Fig. 5 is structural representation of the conveyer belt on support body in the utility model embodiment；
Fig. 6 be the utility model embodiment in hot air supply device structural representation；
Fig. 7 is enlarged drawing at Fig. 2 A；
Fig. 8 is the side view of feed arrangement in the utility model embodiment；
Fig. 9 is the front view of feed arrangement in the utility model embodiment.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Please as shown in Figures 1 to 9, the utility model embodiment provides a kind of drying equipment, for the drying of coal, at least wraps
Two drying units 1 are included, drying unit 1 includes hothouse 11, the conveyer belt 12 for conveying coal is provided with hothouse 11,
Hot air supply device 14 for providing from hot blast to hothouse 11, and the drive device for driving conveyer belt 12 to move
13；The hothouse 11 of adjacent two drying unit 1 is connected, and is provided with material guiding machine between the conveyer belt 12 of adjacent two drying unit 1
Structure 2, the conveyer belt 12 for the coal on the conveyer belt 12 of one of drying unit 1 to be oriented to another drying unit 1.
The drying equipment that the utility model embodiment is provided, due to including more than two drying units 1, adjacent two
The hothouse 11 of drying unit 1 is connected, and is provided with material guide mechanism 2 between the conveyer belt 12 of adjacent two drying unit 1, for inciting somebody to action
Coal on the conveyer belt 12 of one of drying unit 1 is oriented to the conveyer belt 12 of another drying unit 1, is done when to wet coal
When dry, wet coal is introduced into one of drying unit 1, i.e. quilt on the conveyer belt 12 on the first drying unit 1 wherein of wet coal
Conveying, during conveying, is dried under the hot blast that hot air supply device 14 is provided, when wet coal is dry single at first
By after drying under member, entered by the effect of material guide mechanism 2 on the conveyer belt 12 of second drying unit, in wet coal from first
During the conveyer belt 12 of drying unit enters on the conveyer belt 12 of second drying unit, make in the guide of material guide mechanism 2
It can be stir-fried with lower coal, i.e., the coal of the upper bottom portion of conveyer belt 12 in first drying unit is turned to the top in coal seam second
Conveyed on the conveyer belt 12 of individual drying unit, hot air supply device 14 in second drying unit provide hot blast in
Coal on conveyer belt 12 is dried, in whole process, not only extends the time of delivery (i.e. drying time) of coal, and by right
Wet coal stir-fries, it is to avoid the situation that bottom can not be dried, and improves the drying efficiency of wet coal.
Certainly, in the utility model embodiment, the number of drying unit 1 is two or more in drying equipment, wherein, each
Drying unit 1 can have hothouse 11 alone to share a hothouse 11.When the hothouse 11 of each drying unit 1 is only
In the presence of vertical, connected entrance is provided with each hothouse 11, for the connection of the hothouse 11 between each drying unit 1,
Connectivity part is arranged in material guide mechanism 2, wet coal is flowed in another hothouse 11 by the connectivity part from a hothouse 11.
As a preferred embodiment, in the utility model embodiment, all drying units 1 share same drying
Room 11.For same hothouse 11, i.e., the conveyer belt 12 of all drying units 1 is in same hothouse 11, can reduce heat
The loss of amount, has saved the cost dried.
Specifically, hothouse 11 includes the support body 111 for being used to install conveyer belt 12, and the insulation of parcel support body 111 is covered
Cover piece 112, drive device 13 and hot air supply device 14 are installed on support body 111, be provided with insulation covering 112 into
Material mouth 113 and discharging opening 114.
Support body 111 mainly plays skeleton function, and insulation covering 112 is coated on support body so that insulation covering 112 is coated
Form a closed space, as hothouse 11.In addition to support body 111 is incubated the skeleton function of covering 112 except playing support,
Installation effect has been additionally operable to it, i.e. conveyer belt 12, drive device 13 and hot air supply device 14 are installed on support body 111.
In order to easy to maintenance, in the utility model embodiment, thermal insulating door thermally insulated door 17 be provided with insulation covering 112, is worked
Personnel can be repaired and be changed to the mechanism in hothouse 11 by thermal insulating door thermally insulated door 17.
In the utility model embodiment, electrical control cabinet 16 is additionally provided with insulation covering 112.
Drive device 13 in the utility model embodiment includes motor 131 and transmission mechanism, and transmission mechanism includes master
Dynamic roller 132 and driven voller 133, drive roll 132 are installed on support body 111 with driven voller 133, and conveyer belt 12 is set in drive roll
132 with driven voller 133, motor 131 is arranged on support body 111 and outside the hothouse 11, motor 131 is used to driving all dry
The drive roll 132 of dry unit 1 is rotated.Because motor 131 can drive the drive roll 132 of all drying units 1 to rotate, therefore,
It can not only ensure that the speed that all drive rolls 132 are rotated is consistent, also cause the structure extreme facility of drying equipment, and can save
The about energy.
In the utility model embodiment, striker plate 121 is provided with the both sides of conveyer belt 12, striker plate 121 is arranged on frame
On body 111.Conveyer belt 12 is during coal is conveyed, and the coal on conveyer belt 12 can skid off conveying from the both sides of conveyer belt 12
Band, such a situation is more protruded after material guide mechanism 2 carries out guide, after the coal on conveyer belt 12 skids off conveyer belt 12, can be made
The total amount for obtaining coal is reduced, and influences the representativeness of the testing result of follow-up ature of coal.Therefore, the utility model embodiment is in conveyer belt 12
Both sides be provided with striker plate 121, striker plate 121 can constrain in the coal on conveyer belt 12 on conveyer belt 12, prevent coal from
The reduction of the total amount of coal after causing to dry is slid on conveyer belt 12.
Material guide mechanism 2 in the utility model embodiment includes the stock guide 21 being arranged on support body 111, and stock guide 21 is set
The tail end in the feed direction of conveyer belt 12 is put, the first vibrator for vibrating stock guide 21 is installed on stock guide 21
22。
Wherein, stock guide 21 is obliquely installed to next conveyer belt 12, and the coal that a upper conveyer belt 12 is conveyed is taken to tail end
After can be contacted with stock guide 21, because stock guide 21 is obliquely installed to next conveyer belt 12, therefore, stock guide 21 guiding make
Under, coal enters next conveyer belt 12, so as to complete the transition between a conveyer belt and next conveyer belt, and completes to stir-fry
Journey.
Due to containing certain moisture in wet coal, therefore, during stock guide 21 carries out guide, wet coal can be sticked to
On stock guide 21, in order to solve the problem, the utility model embodiment is mounted with the first vibrator 22, first on stock guide 21
The setting of vibrator 22 so that stock guide 21 constantly vibrates during guide, the wet coal sticked on stock guide 21 is shaken
Drop down onto on the conveyer belt 12 of next drying unit.
Hot air supply device 14 in the utility model embodiment includes, flow fan 141, thermal-insulating body 142 and heating
Pipe 143, flow fan 141 is used for the air feed into thermal-insulating body 142, and wind is after thermal-insulating body 142 by installed in thermal-insulating body
Heating tube 143 in 142 is thermally formed hot blast, and hot blast enters that the wet coal on conveyer belt 12 is dried in hothouse 11.
, can be dry in order to be carried out to the temperature in hothouse 11 in effective control, the utility model embodiment
Temperature-detecting device is set in dry room 11, and temperature-detecting device is used to detect the temperature in hothouse 11 in real time, and then, work people
Member can be according to detected by temperature-detecting device hothouse 11 in temperature heating tube 143 or convection flow fan 141 are entered
Row control, so as to be adjusted to the temperature in hothouse 11.
In order that obtaining each drying unit 1 in the compact conformation of drying equipment, the utility model embodiment shares a drying
Room 11, and each drying unit 1 conveyer belt 12 it is overlapping shift to install, this allow for hot air supply device 14 must be arranged on conveying
With 12 one end, now, the problem of having uniform drying.
Therefore, in the utility model embodiment, assisted heating device 144 is additionally provided with the top of conveyer belt 12, aid in
The coal that heater 144 is used to convey conveyer belt 12 carries out auxiliary drying.Assisted heating device 144 is arranged far from hot blast
One end of feedway 14, the setting of assisted heating device 144 can supplement the damage of heat of the hot blast during flowing
Lose, it is ensured that the temperature in the coal seam on conveyer belt 12 is consistent, improves dry quality.
Wherein, assisted heating device 144 is preferred to use optical wave tube, and optical wave tube is a kind of to be sent out using built-in halogen lamp tube
After heat, dynamical reflection is recycled to concentrate the device of heat, it is fast with programming rate, the features such as homogeneous heating, light wave
The use of pipe, can additional heat loss, it is ensured that the temperature in the coal seam on conveyer belt 12 is consistent, improves dry mass.
In the utility model embodiment, dehumidifier apparatus 15 is additionally provided with insulation covering 112, dehumidifier apparatus 15 is used for
Extract the humid air in hothouse 11.Dehumidifier apparatus 15 is preferably arranged on the dehumidifier fan 152 of dehumidifier mouthful 151, dehumidifier fan 152
Setting enables to the circulation of the inner air of hothouse 11 fast, improves drying efficiency.
Imported as a preferred embodiment, dehumidifier can also be fanned to 152 hot blasts extracted out in thermal-insulating body 142, pass through heating
Pipe 143 enters in hothouse 11 after heating, and the waste heats that be arranged such to take out in air to dehumidifier fan 152 carry out abundant profit
With the utilization rate of raising heat.
In the utility model embodiment, feed arrangement 4 is provided with the charging aperture 113 on insulation covering 112, is fed
Device 4 includes feed hopper 41, and guide pad 42 is provided with the inwall of feed hopper 41, and guide pad 42 is used for the coal in feed hopper 41
It is layered on conveyer belt 12.
After wet coal enters feed hopper 41, under the deadweight of wet coal, can vertically it fall on conveyer belt 12, in this way, can cause
Wet coal is accumulated on conveyer belt 12, i.e. the coal seam in the middle of on conveyer belt 12 is thick, and the coal seam on both sides is relatively thin, the coal at the thickness of coal seam, especially
It is that the coal of high seam bottom is difficult to be dried, so as to influence the efficiency that coal is dried.It is provided with after guide pad 42, when wet coal enters
After feed hopper 41, under the guide effect of guide pad 42, a part of wet coal can be directed to the both sides of conveyer belt 12 so that conveyer belt 12
The coal seam thickness of upper center section and two side portions reaches unanimity, and improves the drying efficiency of coal.
In order to further control in the thickness in the coal seam on conveyer belt 12, the utility model embodiment, on feed hopper 41
It is additionally provided with the adjustable plate 43 of the thickness for adjusting the coal for entering conveyer belt 12.Adjustable plate 43 is vertically arranged, and can be relative
In the vertical shift of feed hopper 41, the distance between the lower edge of adjustable plate 43 and the surface of conveyer belt 12 are the thickness in coal seam.Pass through
The distance between lower edge and the surface of conveyer belt 12 of adjustable plate 43 are adjusted, the thickness in coal seam on conveyer belt 12 can be adjusted
It is whole.The setting of adjustable plate 43, ensure that wet coal is substantially tiled on conveyer belt 12, improves dry efficiency.
In order to prevent wet coal from sticking on feed hopper 41, in the utility model embodiment, it is additionally provided with feed hopper 41
Second vibrator 23.
Conveyer belt 12 in the utility model embodiment, it is preferred to use stainless steel band.
Conveyer belt 12 during wet coal is conveyed, the wet coal contacted with conveyer belt 12 some stick to conveyer belt 12
On.During due to coal property test, there is higher pure property requirement for the coal sample that need to be detected, it is impossible to be mixed with other unrelated
Coal sample, therefore, for sticking to the coal on conveyer belt 12, other can be influenceed to need the detection of dry coal.Therefore, this practicality
In new embodiment, it is provided with conveyer belt 12 and scrapes sweeping device 122, scrapes the mistake that sweeping device 122 can be moved in conveyer belt 12
The coal sticked on conveyer belt 12 is scraped totally in journey, it is ensured that the clean noresidue of conveyer belt 12, at the same ensure every batch come coal not by
The influence of upper batch of coal residual.
Because the movement of conveyer belt 12 is due to that drive roll 132 rotates what is realized with driven voller 133, after long-time use,
Easily there is skidding between conveyer belt 12 and drive roll 132, or conveyer belt 12 and driven voller 133, so as to influence conveying
Conveying with 12 pairs of coals.Therefore, in the utility model embodiment, for Conveyer Belt 12 is provided with support body 111
Tight device 3, the setting of tensioning apparatus 3 enables to conveyer belt 12 to be in tensioning state, it is ensured that conveyer belt 12 and drive roll 132,
Frictional force between conveyer belt 12 and driven voller 133, so as to avoid conveyer belt 12 from skidding.
Wherein, tensioning apparatus 3 is preferably included, mounting frame 31, in mounting frame 31, and for installing driven voller
133 mounting blocks 32, wherein, mounting blocks 32 can be moved horizontally in mounting frame 31, be additionally provided with mounting frame 31
Two groups of regulating blocks 33, one group has two regulating blocks 33, and mounting blocks 32 are fixed by two regulating blocks 33, also set in mounting frame 31
Be equipped with adjusting rod 34, one end of adjusting rod 34 is connected with mounting blocks 32, the other end pass through mounting frame 31, and with mounting frame 31
Screw thread coordinates.When needing to be tensioned conveyer belt 12, adjusting rod 34 is rotated so that mounting blocks 32 are moved horizontally, installing
During block 32 is moved horizontally, the distance between driven voller 133 and drive roll 132 increase, so that driven voller 133 and master
Dynamic roller 132 pulls conveyer belt 12, and conveyer belt 12 is tensioned, then consolidated the position of the mounting blocks 32 after tensioning by regulating block 33
It is fixed, to prevent mounting blocks 32 from sliding.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of drying equipment, the drying for coal, it is characterised in that at least including two drying units (1),
The drying unit (1) includes hothouse (11), and the conveyer belt for conveying coal is provided with the hothouse (11)
(12), the hot air supply device (14) for the offer hot blast into the hothouse (11), and for driving the conveyer belt
(12) mobile drive device (13)；
The hothouse (11) connection of drying unit (1) described in adjacent two, and the conveyer belt of drying unit (1) described in adjacent two
(12) material guide mechanism (2) is provided between, for by the coal on the conveyer belt (12) of one of them drying unit (1)
On the conveyer belt (12) for being oriented to another drying unit (1).
2. drying equipment according to claim 1, it is characterised in that the drying of drying unit (1) described in adjacent two
Room (11) is connected specifically, drying unit (1) described in adjacent two shares same hothouse.
3. drying equipment according to claim 1 or 2, it is characterised in that the hothouse (11) includes being used to install institute
The support body (111) of conveyer belt (12) is stated, and wraps up the insulation covering (112) of the support body (111), the drive device
(13) it is installed on the support body (111), is set on the insulation covering (112) with the hot air supply device (14)
There are charging aperture (113) and discharging opening (114).
4. drying equipment according to claim 3, it is characterised in that the drive device (13) include motor (131) with
And transmission mechanism, the transmission mechanism includes drive roll (132) and driven voller (133), the drive roll (132) with it is described driven
Roller (133) is installed on the support body (111), the conveyer belt (12) be set in the drive roll (132) with it is described driven
On roller (133), the motor (131) is arranged on the support body (111) and is in the hothouse (11) outside, the motor
(131) it is used to drive the drive roll (132) of all drying units (1) to rotate.
5. drying equipment according to claim 3, it is characterised in that the both sides of the conveyer belt (12) are provided with backgauge
Plate (121), the striker plate (121) is arranged on the support body (111).
6. drying equipment according to claim 1, it is characterised in that the material guide mechanism (2) includes being arranged on support body
(111) stock guide (21) on, the stock guide (21) is arranged on the tail end of the conveyer belt (12) feed direction, led described
The first vibrator (22) for vibrating institute's stock guide (21) is installed on flitch (21).
7. drying equipment according to claim 1, it is characterised in that be additionally provided with above the conveyer belt (12) auxiliary
Heater (144) is helped, the coal that the assisted heating device (144) is used to convey the conveyer belt (12) carries out aiding in doing
It is dry.
8. drying equipment according to claim 3, it is characterised in that be additionally provided with the insulation covering (112)
Dehumidifier apparatus (15), the dehumidifier apparatus (15) is used to extract the humid air in the hothouse (11).
9. drying equipment according to claim 3, it is characterised in that the charging aperture on the insulation covering (112)
(113) place is provided with feed arrangement (4), and the feed arrangement (4) includes feed hopper (41), on the feed hopper (41) inwall
Guide pad (42) is provided with, the guide pad (42) is used to the coal in the feed hopper (41) being layered on the conveyer belt (12)
On.
10. drying equipment according to claim 9, it is characterised in that being additionally provided with the feed hopper (41) is used for
Regulation enters the adjustable plate (43) of the thickness of the coal of the conveyer belt (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445796.2U CN206420281U (en) | 2016-12-27 | 2016-12-27 | A kind of drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445796.2U CN206420281U (en) | 2016-12-27 | 2016-12-27 | A kind of drying equipment |
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| Publication Number | Publication Date |
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| CN206420281U true CN206420281U (en) | 2017-08-18 |
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ID=59575589
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621445796.2U Active CN206420281U (en) | 2016-12-27 | 2016-12-27 | A kind of drying equipment |
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| CN (1) | CN206420281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500490A (en) * | 2016-12-27 | 2017-03-15 | 长沙开元仪器股份有限公司 | A kind of drying equipment |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500490A (en) * | 2016-12-27 | 2017-03-15 | 长沙开元仪器股份有限公司 | A kind of drying equipment |
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Effective date of registration: 20190611 Address after: 410100 Xingsha Industrial Base (Changlong Street), Changsha Economic and Technological Development Zone, Changsha City, Hunan Province, No. 1259, Liangtang East Road Patentee after: Kaiyuan Instrument Co., Ltd., Changsha Address before: 410100 No. 172 Kaiyuan Road, Changsha economic and Technological Development Zone, Hunan Patentee before: Changsha Kaiyuan Instruments Co., Ltd. |