CN205746800U - Coal-burning boiler - Google Patents
Coal-burning boiler Download PDFInfo
- Publication number
- CN205746800U CN205746800U CN201620725107.7U CN201620725107U CN205746800U CN 205746800 U CN205746800 U CN 205746800U CN 201620725107 U CN201620725107 U CN 201620725107U CN 205746800 U CN205746800 U CN 205746800U
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- Prior art keywords
- coal
- flue gas
- burner hearth
- burning boiler
- chimney
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Abstract
This utility model is about a kind of coal-burning boiler, relates to boiler technology field, and main purpose is to improve the efficiency of combustion of coal-burning boiler.The technical scheme of main employing is: coal-burning boiler, including burner hearth, the bottom in described burner hearth has combustion zone, and the top in described burner hearth has flue gas district, and the bottom in described burner hearth also has exhaust passage；Air intake installation, connects with described flue gas district, for the flue gas in flue gas district is blowed to described combustion zone, makes described flue gas arrange outside described exhaust passage after the second-time burning of described combustion zone.Relative to prior art, the flue gas produced after primary combustion directly outer row, in this utility model, flue gas after primary combustion, then through second-time burning, can be by the CO burning in flue gas middle after primary combustion, thus improve the efficiency of combustion of coal-burning boiler, improve quantity of heat production.
Description
Technical field
This utility model relates to boiler technology field, particularly relates to a kind of coal-burning boiler.
Background technology
Coal-burning boiler refers to using coal as fuel, by coal combustion heat release amount in burner hearth, heat medium water or other
Organic heat carrier (such as conduction oil etc.) is heated to the thermal powerplant of uniform temperature (or pressure).Have on the sidewall of coal-burning boiler
Having the filler door leading to burner hearth, the top of burner hearth has exhaust chimney.In using, first open filler goalkeeper's kindling (timber) and put into
Burner hearth is interior and ignites, and can insert coal, and closed by filler door after treating kindling hyperactivity of fire.
Wherein, the main component of coal is carbon, and carbon can produce two kinds of different products under two fired states, and oxygen fills
When foot carbon burns completely, C+O2=CO2；During oxygen deficiency, carbon imperfect combustion 2C+O2=2CO2.Wherein, same coal,
The heat that the heat produced during burning completely produces much larger than imperfect combustion.
In order to burn as much as possible for coal completely, the exhaust chimney of partial fuel coal boiler is mounted with exhaust fan, can
Lead to the air inflow in coal-burning boiler to increase, make oxygen more sufficient.
During realizing this utility model, utility model people finds that in prior art, at least there are the following problems:
Coal is to concentrate to be deposited in burner hearth, increases air inflow, it is impossible to enough imperfect combustions stoping coal completely, coal
The flue gas produced after charcoal burning still there is substantial amounts of carbon monoxide to produce, and by arranging outside exhaust chimney, not only makes coal fire
The heat burning release is relatively low, pollutes air simultaneously.
Utility model content
In view of this, this utility model provides a kind of coal-burning boiler, and main purpose is to improve the burning effect of coal-burning boiler
Rate.
For reaching above-mentioned purpose, this utility model mainly provides following technical scheme:
Embodiment of the present utility model provides a kind of coal-burning boiler, and including burner hearth, the bottom in described burner hearth has burning
District, the top in described burner hearth has flue gas district,
Bottom in described burner hearth also has exhaust passage；
Air intake installation, connects with described flue gas district, for the flue gas in flue gas district is blowed to described combustion zone, makes described flue gas
Arrange outside described exhaust passage after the second-time burning of described combustion zone.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Optionally, aforesaid coal-burning boiler, wherein said combustion zone has for supporting coal, by unsettled for coal at burner hearth
The supporting construction of bottom surface, described supporting construction has port, and described port connects top and the lower section of described supporting construction；
Described exhaust passage is positioned at the lower section of described supporting construction.
Optionally, aforesaid coal-burning boiler, wherein said burner hearth bottom surface also has cinder storage tank, and described exhaust passage is positioned at
Between below the notch of described cinder storage tank and described supporting construction.
Optionally, aforesaid coal-burning boiler, the top of wherein said burner hearth also has chimney, and the entrance connection of institute's chimney is described
Inside burner hearth, the outlet of institute's chimney is led to and is stated outside burner hearth.
Optionally, aforesaid coal-burning boiler, the entrance of wherein said chimney is rotatably connected to drop in leaf；
Described drop in leaf includes the buckling surface for fastening and the gear relative with described buckling surface with the entrance of chimney
Wind face；Under gravity, described drop in leaf downwardly turns over, and described buckling surface separates with the entrance of described chimney；
Described face of keeping out the wind is relative with the entrance of described air intake installation, when the described face blowing force at described air intake installation of keeping out the wind
Under, described drop in leaf is flipped up, and the buckling surface of described drop in leaf fastens with the entrance of described chimney.
Optionally, aforesaid coal-burning boiler, the inclined mouth of entrance of wherein said chimney.
Optionally, aforesaid coal-burning boiler, wherein said chimney has electrically operated valve, for controlling connection and the pass of chimney
Close.
Optionally, aforesaid coal-burning boiler, the most also include:
ON-OFF control circuit, connects described electrically operated valve and air intake installation respectively, when described ON-OFF control circuit is in
One state, described air intake installation opens, and described electrically operated valve is closed, when described ON-OFF control circuit is in the second state, described
Air intake installation cuts out, and described electrically operated valve is opened.
Optionally, aforesaid coal-burning boiler, wherein said exhaust passage passes upward through heat exchange after being drawn by burner hearth bottom
After device, lead to outside.
Optionally, aforesaid coal-burning boiler, the bottom of wherein said exhaust passage has the first clean-up port.
Optionally, aforesaid coal-burning boiler, the top of wherein said exhaust passage has the second clean-up port.
By technique scheme, the coal-burning boiler that technical solutions of the utility model provide at least has the advantage that
In the technical scheme that this utility model embodiment provides, exhaust passage connects the bottom of burner hearth, and air intake installation connects
At roof of the furnace, coal is after burning in combustion zone, and scorching hot flue gas can upwards rise to flue gas district, is opening air intake installation
After, the gas that air intake installation enters, the flue gas in flue gas district can be blowed to combustion zone again, make the carbon monoxide in flue gas in described combustion
Arrange outside described exhaust passage after burning district's second-time burning.Relative to prior art, the flue gas produced after primary combustion is direct
Outer row, in this utility model, the flue gas after primary combustion, then through second-time burning, can be by flue gas middle after primary combustion
CO burning, thus improve the efficiency of combustion of coal-burning boiler, improve quantity of heat production.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and can being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed
Describe in detail bright as after.
Accompanying drawing explanation
By reading the detailed description of hereafter preferred implementation, various other advantage and benefit common for this area
Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as this practicality
Novel restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical parts.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of coal-burning boiler that embodiment of the present utility model provides；
Fig. 2 is the inside theory structure schematic diagram of a kind of coal-burning boiler that embodiment of the present utility model provides；
Fig. 3 is the inside theory structure schematic diagram of a kind of concrete coal-burning boiler that embodiment of the present utility model provides；
Fig. 4 is the partial structurtes schematic diagram of Fig. 1；
Fig. 5 is the electric connection structure schematic diagram of a kind of coal-burning boiler that embodiment of the present utility model provides.
Detailed description of the invention
By further illustrating the technological means and effect that this utility model taked by reaching predetermined utility model purpose,
Below in conjunction with accompanying drawing and preferred embodiment, to according to its detailed description of the invention of coal-burning boiler that the utility model proposes, structure, spy
Levy and effect, after describing in detail such as.In the following description, what different " embodiments " or " embodiment " referred to is not necessarily same
One embodiment.Additionally, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
As depicted in figs. 1 and 2, a kind of coal-burning boiler that an embodiment of the present utility model proposes, including burner hearth 10, institute
Stating the bottom in burner hearth and have combustion zone 11, the top in described burner hearth has flue gas district 12, and the bottom in described burner hearth also has
There is exhaust passage 20；Coal-burning boiler also includes that air intake installation 30, air intake installation 30 connect with described flue gas district 12, for by flue gas
The flue gas in district 12 blows to described combustion zone 11, makes the carbon monoxide in described flue gas through described after the second-time burning of described combustion zone
Arrange outside exhaust passage.
Coal-burning boiler can use coal as fuel, and in using, air intake installation, when burning, can be opened by coal, will outward
The gas in portion is blown into flue gas district.
Wherein, air intake installation can use aerator, fan etc., is blown into air in flue gas district.
In the technical scheme that this utility model embodiment provides, exhaust passage connects the bottom of burner hearth, and air intake installation connects
At roof of the furnace, coal is after burning in combustion zone, and scorching hot flue gas can upwards rise to flue gas district, is opening air intake installation
After, the gas that air intake installation enters, the flue gas in flue gas district can be blowed to combustion zone again, make the carbon monoxide in flue gas in described combustion
Arrange outside described exhaust passage after burning district's second-time burning.Relative to prior art, the flue gas produced after primary combustion is direct
Outer row, in this utility model, the flue gas after primary combustion, then through second-time burning, can be by flue gas middle after primary combustion
CO burning, thus improve the efficiency of combustion of coal-burning boiler, improve quantity of heat production.
Wherein, the high-temperature flue gas that combustion zone produces after combustion can rise to flue gas district, and the most such as, coal is in burning
Can completely burn while producing carbon dioxide, it also occur that imperfect combustion, produce carbon monoxide, and, the ratio of carbon monoxide
Heavy phase is relatively light to carbon dioxide, can float to top, flue gas district relative to carbon dioxide, air intake installation can from top, flue gas district to
Flue gas is passed through air in district, and due to coal in combustion, the top in flue gas district, sidepiece do not exist the path given vent to anger, flue gas
The gas at top, district can only be by refunds combustion zone again, thus the carbon monoxide in flue gas can be ignited by combustion zone, remaining
Waste gas can be by arranging outside the exhaust passage of burner hearth inner bottom part.
As it is shown on figure 3, concrete, on the side sidewall that the entrance of air intake installation 30 is opened in burner hearth, level is in burner hearth
Blowing, after the flue gas of combustion zone 11 upwards rises to flue gas district 12, the gas that air intake installation 30 is blown into is another in flue gas is obedient to burner hearth
The sidewall of side blows to downwards combustion zone 11.
In order to realize flue gas regular flow in burner hearth, concrete, the flue gas district 12 gone back in burner hearth also has air-flow
Division board 121, flue gas district 12 is separated out flue gas and rises cavity 12a and rise cavity at flue gas by described air-flow division board 121
The smoke backflow cavity 12b that 12a is peripheral, the entrance of smoke backflow cavity 12b connects with air intake installation 30, smoke backflow cavity
Combustion zone 11 is led in the outlet of 12b, and wherein, the top of air-flow division board 121 has connection flue gas rising cavity 12a and flue gas returns
The air-flow port of stream cavity 12b.In burning, after the flue gas of combustion zone rises to flue gas rising cavity, flue gas is in company with from air inlet
The gas that device is passed through, together leads to combustion zone, and in burning in combustion zone, carbon monoxide is burned generates carbon dioxide, does not has
The relatively low carbon monoxide of the proportion that burns completely may proceed to rise, and the heavier carbon dioxide of proportion can lead down into outside exhaust passage
Row.
As it is shown on figure 3, in the middle of concrete enforcement, the coal-burning boiler described in above-described embodiment, described combustion zone 11 has
Have for supporting coal M100, by unsettled for the coal M100 supporting construction 111 in burner hearth bottom surface, described supporting construction 111 has
Having port, described port connects top and the lower section of described supporting construction 111；Described exhaust passage 20 is positioned at described supporting construction
The lower section of 111.Supporting construction can be double-edged fine-toothed comb, many bonding jumpers with anyhow interlocking.The gas blown down from flue gas district by air intake installation
Body, enters exhaust passage after the port of supporting construction, and flue gas can be completely by being positioned in supporting construction the coal of burning, phase
For offering exhaust passage in coal side, the effect of second-time burning can be improved.
Further, for the ease of cleaning slag, as it is shown on figure 3, described burner hearth bottom surface also has cinder storage tank 13, described
Between exhaust passage 20 is below the notch and described supporting construction 111 of described cinder storage tank 13.At the notch of slag
The wind that can be blown downwards by air intake installation, the slag in cinder storage tank is easily blown, in order to improve the coal storage of cinder storage tank
Effect, cinder storage tank notch edges is provided with baffle plate 131, such as ring baffle.
Wherein, in the use of an ember, it usually needs use kindling, first open the fire door of burner hearth, kindling is put
Put in combustion zone, first kindling is ignited, putting into coal, close the fire door of burner hearth.Light in kindling, owing to flare is less,
After opening air-intake device, kindling is difficult to light, after closing air-intake device, and the confession hypoxgia of kindling, can not well ignite.
As it is shown in figure 1, lighting for the ease of kindling, in the embodiment that this utility model provides, the top of described burner hearth also has cigarette
Chimney 40, it is internal that the entrance of institute's chimney 40 connects described burner hearth 10, and the outlet of institute's chimney 40 is led to and stated outside burner hearth 10.The top of burner hearth 10
Arranging outside the flue gas that kindling can be burnt by the chimney 40 in portion, increasing air can fill into from the feeding port of combustion zone simultaneously.Simultaneously as
In the flue gas accommodated in flue gas district, it will usually containing a small amount of carbon monoxide, before opening air intake installation, chimney can make proportion
Arrange outside lighter carbon monoxide, reduce the concentration of flue gas district carbon monoxide.If air intake installation is blower fan, starting blower fan process
In, the electric spark that the moment of fan starting produces may ignite or ignite carbon monoxide in flue gas district, after being provided with chimney, and can
Reduce the danger that blast occurs in opening blower fan process burner hearth.
Further, above-mentioned coal-burning boiler, as shown in Figure 4, the entrance of described chimney 40 is rotatably connected to drop in leaf
50；Described drop in leaf 50 includes the buckling surface for fastening and relative the keeping out the wind with described buckling surface with the entrance of chimney 40
Face；Under gravity, described drop in leaf 50 downwardly turns over, and described buckling surface separates with the entrance of described chimney 40；Described
Face of keeping out the wind is relative with the entrance of described air intake installation 30, when described face of keeping out the wind is under the blowing force of described air intake installation 30, and described work
Dynamic turnover panel 50 is flipped up, and the buckling surface of described drop in leaf 50 fastens with the entrance of described chimney 40.In using, will at kindling
After coal ignites, can open air-intake device, while air-intake device can be blown into air in burner hearth, air-intake device can also blow
The drop in leaf turned under Dong, makes to turn on drop in leaf, is blocked by the entrance of chimney, prevents carbon monoxide in flue gas from firing without secondary
Burn and arrange from chimney.Wherein, drop in leaf can be connected to the side of chimney entrance by a rotating shaft.
If chimney entrance is level mouth, then air intake installation needs to love and respect a drop in leaf and blows, and turns over to turn 90 degrees and just may be used
Being closed by chimney entrance, the wind-force of needs is relatively big, and easily fastens not tight, for the ease of chimney entrance is fastened, and above-mentioned combustion
Coal burning boiler, the inclined mouth of entrance of described chimney.The angle of tilt port can be between 30-60 degree.Such as 45 degree of tilt ports.
In addition to controlled the switch of chimney entrance by wind energy, also by controlling electric energy, above-mentioned coal-burning boiler, described
Chimney has electrically operated valve, for controlling connection and the closedown of chimney.Electrically operated valve can be controlled by Artificial Control button, point
During combustion kindling, open electrically operated valve, in fire coal, close electrically operated valve, open air intake installation.
For the ease of operation, as it is shown in figure 5, above-mentioned coal-burning boiler, also include: ON-OFF control circuit 60, on-off control
Circuit 60 connects described electrically operated valve 70 and air intake installation 30 respectively, (makes when described ON-OFF control circuit 60 is in the first state
With burning coal), described air intake installation 30 is opened, and described electrically operated valve 70 is closed, when described ON-OFF control circuit 60 is in
Two-state (is suitable to light kindling), and described air intake installation 30 cuts out, and described electrically operated valve 70 is opened.In the present embodiment, air inlet fills
Put and link with electrically operated valve, simplified operation program.Certainly, for the ease of manipulation, also can have the third state, when described switch
Control circuit is in the third state (when being suitable to disable), and described air intake installation cuts out, and described electrically operated valve is closed.
As it is shown in figure 1, concrete, above-mentioned coal-burning boiler, described exhaust passage 20 is drawn on backward by bottom burner hearth 10
After 80s through over-heat-exchanger, lead to outside.Heat exchange medium in heat exchanger can be water.
Coal not only produces the slag that block is bigger in burning, also can produce the coal ash of dust-like, blow at air intake installation
Under the wind-force effect entered, coal ash can more or less run up in exhaust passage, and it is stifled that time length can make exhaust passage occur long afterwards
Plug, for the ease of cleaning, as it is shown in figure 1, above-mentioned coal-burning boiler, the bottom of described exhaust passage 20 has the first clean-up port
21.Coal ash can be accumulated in bottom exhaust passage, after opening the first clean-up port, can be cleaned out by the coal ash in exhaust passage.
Utility model people finds, exhaust passage and heat exchanger carry out in the use of heat exchange, and after using for a long time, heat exchange efficiency is big
Big reduction, be due to, the inwall of exhaust passage have accumulated by after coal burning produce tar layer, tar layer hinders
The heat exchange that steam in exhaust passage is carried out with heat exchanger, thus, for the ease of maintenance, improves long coal-burning boiler
Heat exchanger effectiveness, as it is shown in figure 1, in above-mentioned coal-burning boiler, the top of described exhaust passage 20 has the second clean-up port 22.Heat
Exchanger is between the top and bottom of exhaust passage, after coal-burning boiler is used for a long time, can open the second clean-up port, to exhaust passage
Tar on inner arm is cleared up.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not has the portion described in detail in certain embodiment
Point, may refer to the associated description of other embodiments.
It is understood that the correlated characteristic in said apparatus can mutually reference.It addition, in above-described embodiment " the
One ", " second " etc. is for distinguishing each embodiment, and does not represent the quality of each embodiment.
In description mentioned herein, illustrate a large amount of detail.It is to be appreciated, however, that it is of the present utility model
Embodiment can be put into practice in the case of not having these details.In some instances, it is not shown specifically known structure
And technology, in order to do not obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand in each utility model aspect or many
Individual, in description to exemplary embodiment of the present utility model above, each feature of the present utility model is divided sometimes together
Group is in single embodiment, figure or descriptions thereof.But, should not be construed to the device of the disclosure reflect following meaning
Figure: this utility model the most required for protection requires than the more feature of feature being expressly recited in each claim.
More precisely, as the following claims reflect, utility model aspect is single less than disclosed above
All features of embodiment.Therefore, it then follows claims of detailed description of the invention are thus expressly incorporated in this specific embodiment party
Formula, the most each claim itself is as independent embodiment of the present utility model.
Those skilled in the art are appreciated that and can carry out the parts in the device in embodiment adaptively
Change and they are arranged in one or more devices different from this embodiment.Can be the unit construction in embodiment
Become parts, and multiple subassembly can be put them in addition.Except at least some in such feature is mutual
Outside repulsion, any combination can be used the institute disclosed in this specification (including adjoint claim, summary and accompanying drawing)
The all parts having feature and the disclosedest any device are combined.Unless expressly stated otherwise, this specification (includes
Adjoint claim, summary and accompanying drawing) disclosed in each feature can by provide identical, equivalent or the replacement of similar purpose
Feature replaces.
Although additionally, it will be appreciated by those of skill in the art that embodiments more described herein include other embodiments
Some feature included by rather than further feature, but the combination of the feature of different embodiment means to be in this practicality newly
Within the scope of type and form different embodiments.Such as, in the following claims, embodiment required for protection
One of arbitrarily can mode use in any combination.All parts embodiment of the present utility model can be real with hardware
Existing, or realize with combinations thereof.
It should be noted that this utility model is illustrated rather than by above-described embodiment this utility model is limited,
And those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.In right
In requirement, any reference marks that should not will be located between bracket is configured to limitations on claims.Word " comprises " not to be arranged
Except there are the parts or assembly not arranged in the claims.Word "a" or "an" before being positioned at parts or assembly is not excluded for
There is multiple such parts or assembly.This utility model can realize by means of the device including some different parts.
If in the claim listing dry part, several in these parts can be to carry out concrete body by same parts item
Existing.Word first, second and third use do not indicate that any order.Can be title by these word explanations.
The above, be only preferred embodiment of the present utility model, not this utility model is made any in form
Restriction, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model,
All still fall within the range of technical solutions of the utility model.
Claims (11)
1. a coal-burning boiler, including burner hearth, the bottom in described burner hearth has combustion zone, and the top in described burner hearth has cigarette
Gas district, it is characterised in that
Bottom in described burner hearth also has exhaust passage；
Air intake installation, connects with described flue gas district, for the flue gas in flue gas district being blowed to described combustion zone, in making described flue gas
Carbon monoxide is arranged after the second-time burning of described combustion zone outside described exhaust passage.
Coal-burning boiler the most according to claim 1, it is characterised in that
Described combustion zone has for supporting coal, by unsettled for the coal supporting construction in burner hearth bottom surface, in described supporting construction
Having port, described port connects top and the lower section of described supporting construction；
Described exhaust passage is positioned at the lower section of described supporting construction.
Coal-burning boiler the most according to claim 2, it is characterised in that
Described burner hearth bottom surface also has cinder storage tank, and described exhaust passage is positioned at the notch of described cinder storage tank and supports knot with described
Between below structure.
Coal-burning boiler the most according to claim 1, it is characterised in that
The top of described burner hearth also has chimney, and the entrance of institute's chimney connects inside described burner hearth, and the outlet of institute's chimney is led to and stated stove
Outside thorax.
Coal-burning boiler the most according to claim 4, it is characterised in that
The entrance of described chimney is rotatably connected to drop in leaf；
Described drop in leaf include for the buckling surface that the entrance of chimney fastens and the keep out the wind face relative with described buckling surface；
Under gravity, described drop in leaf downwardly turns over, and described buckling surface separates with the entrance of described chimney；
Described face of keeping out the wind is relative with the entrance of described air intake installation, when described face of keeping out the wind is under the blowing force of described air intake installation, and institute
Stating drop in leaf to be flipped up, the buckling surface of described drop in leaf fastens with the entrance of described chimney.
Coal-burning boiler the most according to claim 5, it is characterised in that
The inclined mouth of entrance of described chimney.
Coal-burning boiler the most according to claim 4, it is characterised in that
Described chimney has electrically operated valve, for controlling connection and the closedown of chimney.
Coal-burning boiler the most according to claim 7, it is characterised in that also include:
ON-OFF control circuit, connects described electrically operated valve and air intake installation respectively, when described ON-OFF control circuit is in the first shape
State, described air intake installation opens, and described electrically operated valve is closed, when described ON-OFF control circuit is in the second state, described air inlet
Device is closed, and described electrically operated valve is opened.
Coal-burning boiler the most according to claim 1, it is characterised in that
After described exhaust passage passes upward through heat exchanger after being drawn by burner hearth bottom, lead to outside.
Coal-burning boiler the most according to claim 9, it is characterised in that
The bottom of described exhaust passage has the first clean-up port.
11. coal-burning boilers according to claim 9, it is characterised in that
The top of described exhaust passage has the second clean-up port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725107.7U CN205746800U (en) | 2016-07-11 | 2016-07-11 | Coal-burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620725107.7U CN205746800U (en) | 2016-07-11 | 2016-07-11 | Coal-burning boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205746800U true CN205746800U (en) | 2016-11-30 |
Family
ID=57378298
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620725107.7U Expired - Fee Related CN205746800U (en) | 2016-07-11 | 2016-07-11 | Coal-burning boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016248A (en) * | 2016-07-11 | 2016-10-12 | 塔城市昊祥三友科技开发有限责任公司 | Coal-fired boiler |
-
2016
- 2016-07-11 CN CN201620725107.7U patent/CN205746800U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016248A (en) * | 2016-07-11 | 2016-10-12 | 塔城市昊祥三友科技开发有限责任公司 | Coal-fired boiler |
| CN106016248B (en) * | 2016-07-11 | 2018-11-27 | 塔城市昊祥三友科技开发有限责任公司 | Coal-burning boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20190711 |
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