CN108980837B - Environment-friendly energy-saving combustion equipment - Google Patents
Environment-friendly energy-saving combustion equipment Download PDFInfo
- Publication number
- CN108980837B CN108980837B CN201810565817.1A CN201810565817A CN108980837B CN 108980837 B CN108980837 B CN 108980837B CN 201810565817 A CN201810565817 A CN 201810565817A CN 108980837 B CN108980837 B CN 108980837B
- Authority
- CN
- China
- Prior art keywords
- furnace body
- furnace
- section
- pipe
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses an environment-friendly energy-saving combustion device which mainly comprises a combustion furnace base, a combustion furnace body, an exhaust outlet and a feeding device, wherein the combustion furnace body is of a multi-section structure and comprises a furnace body lower section, a furnace body middle section and a furnace body upper section, the furnace body lower section, the furnace body middle section and the furnace body upper section are connected through flanges, a rotary furnace disc is arranged inside the furnace body lower section, a power mechanism for driving the rotary furnace disc is arranged outside the furnace body lower section, a water-flowing scraping plate is arranged on the rotary furnace disc, spiral water protection gas supply rings are arranged inside the furnace body middle section and the furnace body upper section, the spiral water protection gas supply rings fill cavities inside the furnace body middle section and the furnace body upper section, and the periphery of the.
Description
Technical Field
The invention discloses a rotary furnace disc for environment-friendly and energy-saving combustion equipment, which can be applied to combustion equipment for combustion heat supply or gas supply of combustible materials, further relates to combustion equipment for recycling combustible wastes to perform combustion and converting the combustible wastes into usable energy, and belongs to the field of environment-friendly and energy-saving combustion equipment.
Background
Combustible waste (combustible waste): the combustible waste, such as waste paper, waste wood, kitchen waste, waste fiber and the like, can be combusted, a large amount of combustible waste can be generated in the current production and life, but the treatment mode is simple, the value of the combustible waste cannot be effectively and continuously exerted, the recycling of the combustible waste only accounts for about 5% of the total amount of the waste according to statistics, the combustible waste is an environment-friendly living environment, and the recycling of the combustible waste as a new energy source is a great concern in China and even all over the world. In order to utilize recyclable combustible waste, a variety of combustion furnaces have been developed, and particularly, various types of furnaces using combustion heat for heating, heating or agricultural use have been developed. The main structure includes: furnace body, grate, heat exchanger and exhaust port etc. however in actual use feel because the combustible waste composition that the source is complicated, the burning is insufficient, the thermal efficiency is low, and the deashing scarfing cinder has certain difficulty, and some cost is very high, and some operation maintenance is difficult, still need further improvement.
Disclosure of Invention
Aiming at the technical defects, the invention discloses environment-friendly energy-saving combustion equipment which can realize full combustion of wastes, is convenient for holographic gas supply and feeding and slag discharge, has long service life of a furnace plate and is convenient to operate and maintain.
Specifically, the invention adopts the following technical scheme:
a rotary furnace plate 5 for environment-friendly energy-saving combustion equipment comprises a rotary furnace plate seat 5-1, wherein a rotary furnace plate support frame 5-2 is arranged on the rotary furnace plate seat 5-1, an annular cooling water jacket 5-3 is arranged on the rotary furnace plate support frame 5-2, a central furnace plate 5-4 is arranged on the annular cooling water jacket 5-3, a plurality of small furnace plates 5-6 are sequentially arranged by extending outwards from the central furnace plate 5-4 so as to be connected into a step-shaped plate surface inclined towards the center, an ash falling opening 5-5 is formed in the central furnace plate 5-4, and air holes 5-8 facing the plate surface are formed in the end surface 5-7 of each small furnace plate.
According to one aspect of the invention, a bearing 13 for controlling the center of the rotary furnace disk 5 is arranged between the inner wall of the lower section 2-1 of the furnace body of the environment-friendly and energy-saving type combustion device and the rotary furnace disk 5.
In addition, the invention also discloses an environment-friendly energy-saving combustion device which mainly comprises a combustion furnace base 1, a combustion furnace body 2, an exhaust outlet 3 and a feeding device 4, wherein the combustion furnace body 2 is of a multi-section structure and comprises a furnace body lower section 2-1, a furnace body middle section 2-1 and a furnace body upper section 2-3, the lower section, the middle section and the upper section of the furnace body are connected through flanges, the rotary furnace plate 5 is arranged inside the furnace body lower section 2-1, a power mechanism 6 for driving the rotary furnace plate 5 is arranged outside the furnace body lower section 2-1, a water-flowing scraping plate 7 is arranged on the rotary furnace plate 5, a spiral water-protecting gas-supplying ring 8 is arranged inside the furnace body middle section 2-1 and the furnace body upper section 2-3, the periphery of the spiral water-protecting gas-supplying ring 8 is filled in the cavity inside the furnace body middle section 2-1 and the furnace body upper section 2-3, and the, the lower section 2-1 of the furnace body is downwards connected with an air storage chamber 9, an ash leakage hopper 10 and an ash removal device 11 in sequence, the lower section 2-1 of the furnace body is upwards connected with the middle section 2-2 of the furnace body and the upper section 2-3 of the furnace body in sequence, the upper section 2-3 of the furnace body is upwards connected with a melting chamber 12 and an exhaust outlet 3 in sequence, and a feeding device 4 positioned at the top of the combustion equipment is connected with the melting chamber 12.
The spiral water protection gas supply ring 8 for the environment-friendly energy-saving combustion equipment is formed by sleeving multiple rings, each ring of the spiral water protection gas supply ring is formed by coiling a special pipe, the section of the spiral water protection gas supply ring is composed of an inner pipe 8-1, an outer pipe 8-2 and an inner and outer pipe connecting rib 8-3, the inner and outer pipe connecting rib 8-3 is provided with a gas outlet 8-4, the inner pipe 8-1 is used for supplying gas, the outer pipe 8-2 is used for supplying water to protect the inner pipe, one end of each group of the outer pipes 8-2 is connected into a passage, the other end of each group of the outer pipes is provided with a water inlet 8-5, the two ends of each group of the inner pipes 8-1 are connected with a gas storage bag 8-6.
After the technical scheme is adopted, the following beneficial effects are obtained:
1) because the feeding outlet of the distributing mechanism is close to the edge of the rotary grate, the fuel is distributed uniformly under the drive of the rotary furnace disc and the distributing mechanism, thereby being beneficial to combustion, and not slagging and caking;
2) because the rotary furnace plate inclines towards the center, ash and slag are easy to remove and the resistance is small;
3) because each small plate block of the rotary furnace plate is provided with an air outlet, the gas supply is sufficient, and the furnace burden can be fully combusted;
4) because the spiral water protection air supply pipes are uniformly distributed in the middle and upper sections of the furnace body, the middle and upper combustion media of the furnace body can be fully mixed with air, and the combustible gas in the furnace can be further fully combusted, thereby greatly improving the combustion efficiency;
5) the spiral water protection air supply pipe is of a special-shaped coil pipe structure with an inner pipe for ventilation and an outer pipe for water ventilation, so that the service life of the spiral water protection air supply pipe can be prolonged;
6) the invention has the advantages of convenient disassembly and assembly, easy operation and maintenance and strong adaptability.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present invention.
FIG. 2 is a schematic cross-sectional view of FIG. 1A-A.
FIG. 3 is an enlarged view of a part of the annular water protecting gas supply pipe of FIG. 2.
Fig. 4 is a schematic view of a partial cross-sectional structure of fig. 1.
FIG. 5 is a schematic diagram of the spiral water protection gas supply ring in FIG. 4.
Fig. 6 is a schematic top view of fig. 5.
Fig. 7 is a schematic cross-sectional view of the single loop of fig. 6.
FIG. 8 is an exploded view of the ash hopper and ash removal device of the air storage chamber of the inner bellows and the outer bellows of FIG. 4.
Fig. 9 is a front view structural schematic diagram of the water-through scraper plate in fig. 1.
Fig. 10 is a schematic top view of fig. 9.
Fig. 11 is a schematic view showing the mounting position of the water scraper.
Fig. 12 is a schematic main section view of the rotary hearth plate of fig. 4.
Fig. 13 is a schematic top view of fig. 12.
Fig. 14 is a partially enlarged schematic view of fig. 12.
Fig. 15 is a schematic view of the supporting frame of the rotary kiln disc in fig. 12.
FIG. 16 is a cross-sectional view of the furnace plate cooling jacket of FIG. 12.
Fig. 17 is a top view of fig. 16.
Fig. 18 is a partially enlarged schematic view of the cooling water jacket.
Detailed Description
The invention will be further described with reference to the accompanying drawings and one of the specific embodiments:
referring to fig. 1-4, an environment-friendly and energy-saving combustion device mainly comprises a combustion furnace base 1, a combustion furnace body 2, an exhaust outlet 3 and a feeding device 4, wherein the combustion furnace body 2 is of a multi-section structure and comprises a furnace body lower section 2-1, a furnace body middle section 2-1 and a furnace body upper section 2-3, the furnace body lower section, the furnace body middle section and the furnace body upper section are connected through flanges, a rotary furnace plate 5 is arranged inside the furnace body lower section 2-1, a power mechanism 6 for driving the rotary furnace plate 5 is arranged outside the furnace body lower section 2-1, a water-flowing scraping plate 7 is arranged on the rotary furnace plate 5, a spiral water protection gas supply ring 8 is arranged inside the furnace body middle section 2-1 and the furnace body upper section 2-3, the spiral water protection gas supply ring 8 is filled in the cavity inside the furnace body middle section 2-1 and the furnace body upper section 2-3, the periphery, the lower section 2-1 of the furnace body is downwards connected with an air storage chamber 9, an ash leakage hopper 10 and an ash removal device 11 in sequence, the lower section 2-1 of the furnace body is upwards connected with the middle section 2-2 of the furnace body and the upper section 2-3 of the furnace body in sequence, the upper section 2-3 of the furnace body is upwards connected with a melting chamber 12 and an exhaust outlet 3 in sequence, a feeding device 4 positioned at the top of a combustion device is connected with the melting chamber 12, and a bearing 13 used for controlling the center of a rotary furnace disc 5 is arranged between the inner wall of the lower section 2-1 of the furnace body and.
Referring to fig. 4-8, the gas storage chamber 9 has a structure that an upper flange 9-1 of the gas storage chamber is connected to a bottom flange 14 of a lower section 2-1 of the furnace body, a bearing 15 for supporting the rotary furnace plate 5 is arranged on the upper flange 9-1 of the gas storage chamber, an outer corrugated pipe 16 is arranged between the upper flange 9-1 of the gas storage chamber and the rotary furnace plate 5, an inner corrugated pipe 17 is sleeved in the outer corrugated pipe 16, the inner corrugated pipe 17 is connected to a small flange (not shown) at the top of a short pipe 18 in the gas storage chamber, the bottom of the short pipe 18 in the gas storage chamber is arranged at the outer edge flange part of a central hole of the lower flange plate 9-2 of the gas storage chamber, the top of the outer corrugated pipe 16 is fixedly connected with an outer friction ring 20, the top of the inner corrugated pipe 17 is fixedly connected with an inner friction ring 21, the top of the outer friction ring 20 and the inner friction ring 21 are in.
An active joint 10-1 is arranged in the ash leaking hopper 10, a water inlet and outlet pipe 10-2 is arranged at one end of the active joint 10-1 and led out of the ash leaking hopper 10, and a water inlet and outlet pipe 10-3 at the other end of the active joint 10-1 is connected with an annular cooling water jacket 5-3 on the rotary furnace disc 5. The ash removing device 11 comprises an ash leaking pipe 11-1 connected with an ash leaking hopper 10, the tail end of the ash leaking pipe 11-1 is connected with an ash removing machine 11-2, and an upper gate valve 11-3 and a lower gate valve 11-3 are arranged on the ash leaking pipe 11-1.
Referring to fig. 12-18, the rotary hearth plate 5 includes a rotary hearth plate seat 5-1, wherein a rotary furnace plate support frame 5-2 is arranged on the rotary furnace plate seat 5-1, an annular cooling water jacket 5-3 is arranged on the rotary furnace plate support frame 5-2, a central furnace plate 5-4 is arranged on the annular cooling water jacket 5-3, a plurality of small furnace plates 5-6 are sequentially arranged by extending outwards from the central furnace plate 5-4, thereby connecting into a ladder-shaped disk surface inclined towards the center, an ash falling port 5-5 is arranged on the central furnace plate 5-4, an air hole 5-8 facing the disk surface is arranged on the end surface 5-7 of the small furnace plate, because the rotary furnace plate inclines towards the center, ash and slag removal is easy, resistance is small, and meanwhile, each small plate block of the rotary furnace plate is provided with an air outlet hole, so that air supply is sufficient, and furnace burden can be fully combusted.
The annular cooling water jacket 5-3 is a special pipe and comprises a special pipe outer ring 5-3-4 and a special pipe inner ring 5-3-5, a middle partition ring 5-3-2 is arranged in the inner ring and the outer ring along the direction of a central loop line, a blocking plate 5-3-1 is arranged in the direction vertical to the central loop line, a water opening 5-3-3 is formed between the left side of the blocking plate 5-3-1 and the middle partition ring 5-3-2, the right side of the blocking plate 5-3-1 is connected with the middle partition ring 5-3-2, and a water inlet 5-3-6 and a water outlet 5-3-7 are respectively formed in two sides of the middle partition ring 5-3-2 at the connection part.
Referring to fig. 9-11, the water-through scraping plate 7 is composed of a water pipe 7-1 and a scraping plate 7-2, the water-through scraping plate 7 is fixed on the middle section 2-2 of the furnace body, and the scraping plate 7-2 at the lower edge of the water-through scraping plate 7 is adjacent to the stepped plate surface of the rotary furnace plate 5.
Referring to fig. 5-7, the spiral water protection gas supply ring 8 is formed by multiple rings in a sleeved mode, each ring of the spiral water protection gas supply ring is formed by winding a special-shaped pipe, the section of the spiral water protection gas supply ring is composed of an inner pipe 8-1, an outer pipe 8-2 and an inner pipe and outer pipe connecting rib 8-3, the inner pipe and outer pipe connecting rib 8-3 is provided with a gas outlet 8-4, the inner pipe 8-1 is used for supplying gas, the outer pipe 8-2 is used for protecting the inner pipe through water, one end of each group of outer pipes 8-2 is connected into a passage, the other end of each group of outer pipes is provided with a water inlet 8-5, the two ends of each group of inner pipes 8-1 are connected with a gas storage bag 8-6.
In addition, in order to observe the combustion condition and grasp the combustion temperature, the melting chamber 12 and the furnace body 2-2 are provided with observation windows, and the furnace body is provided with a temperature detector.
Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above-described embodiments in accordance with the spirit of the invention, and the resulting functional effects would still fall within the scope of the invention, without departing from the spirit of the description and the accompanying drawings. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.
Claims (1)
1. An environment-friendly energy-saving combustion device comprises a combustion furnace base (1), a combustion furnace body (2), an exhaust outlet (3) and a feeding device (4), wherein the combustion furnace body (2) is of a multi-section structure and comprises a furnace body lower section (2-1), a furnace body middle section (2-1) and a furnace body upper section (2-3), the furnace body lower section, the furnace body middle section and the furnace body upper section are connected through flanges, a rotary furnace disc (5) is arranged inside the furnace body lower section (2-1), a power mechanism (6) for driving the rotary furnace disc (5) is arranged outside the furnace body lower section (2-1), a water-flowing scraping plate (7) is arranged on the rotary furnace disc (5), a spiral water protection gas supply ring (8) is arranged inside the furnace body middle section (2-1) and the furnace body upper section (2-3), and the spiral water protection gas supply ring (8) is filled in cavities inside the furnace body middle section (2-1) and the furnace body, the periphery of the lower furnace body section (2-1) is fixedly connected with the furnace base (1), the lower furnace body section (2-1) is downwards connected with the gas storage chamber (9), the ash leakage hopper (10) and the ash removal device (11) in sequence, the lower furnace body section (2-1) is upwards connected with the middle furnace body section (2-2) and the upper furnace body section (2-3) in sequence, the upper furnace body section (2-3) is upwards connected with the melting chamber (12) and the exhaust outlet (3) in sequence, the feeding device (4) positioned at the top of the combustion equipment is connected with the melting chamber (12), and a bearing (13) for controlling the center of the rotary furnace disc (5) is arranged between the inner wall of the lower furnace body section (2-1) and the rotary furnace disc; the gas storage chamber (9) is structurally characterized in that an upper flange (9-1) of the gas storage chamber is connected to a bottom flange (14) of a lower section (2-1) of the furnace body, a bearing (15) for supporting the rotary furnace disc (5) is arranged on the upper flange (9-1) of the gas storage chamber, an outer corrugated pipe (16) is arranged between the upper flange (9-1) of the gas storage chamber and the rotary furnace disc (5), an inner corrugated pipe (17) is sleeved in the outer corrugated pipe (16), the inner corrugated pipe (17) is connected to a small flange at the top of a short pipe (18) in the gas storage chamber, the bottom of the short pipe (18) in the gas storage chamber is arranged at the flange part outside a central hole of a lower flange disc (9-2) of the gas storage chamber, the top of the outer corrugated pipe (16) is fixedly connected with an outer friction ring (20), the top of the inner corrugated pipe (17) is fixedly connected with an inner friction ring (21), the tops of the outer friction ring (20) and the inner, the wall of the air storage chamber (9) is provided with an air inlet (9-3); a movable joint (10-1) is arranged in the ash leakage hopper (10), a water inlet and outlet pipe (10-2) is arranged at one end of the movable joint (10-1) and led out of the ash leakage hopper (10), a water inlet and outlet pipe (10-3) at the other end of the movable joint (10-1) is connected with an annular cooling water jacket (5-3) on the rotary furnace disc (5), the ash removal device (11) comprises an ash leakage pipe (11-1) connected with the ash leakage hopper (10), the tail end of the ash leakage pipe (11-1) is connected with an ash remover (11-2), and an upper gate valve and a lower gate valve (11-3) are arranged on the ash leakage pipe (11-1); the rotary furnace plate (5) comprises a rotary furnace plate seat (5-1), wherein a rotary furnace plate support frame (5-2) is arranged on the rotary furnace plate seat (5-1), an annular cooling water jacket (5-3) is arranged on the rotary furnace plate support frame (5-2), a central furnace plate (5-4) is arranged on the annular cooling water jacket (5-3), and a plurality of small furnace plates (5-6) are sequentially arranged by extending outwards from the central furnace plate (5-4) so as to be connected into a step-shaped plate surface inclined towards the center; the annular cooling water jacket (5-3) is a special pipe and comprises a special pipe outer ring (5-3-4) and a special pipe inner ring (5-3-5), a middle partition ring (5-3-2) is arranged in the inner ring and the outer ring along the direction of a central loop line, a blocking plate (5-3-1) is arranged in the direction vertical to the central loop line, a water opening (5-3-3) is formed between the left side of the blocking plate (5-3-1) and the middle partition ring (5-3-2), the right side of the blocking plate (5-3-1) is connected with the middle partition ring (5-3-2), and a water inlet (5-3-6) and a water outlet (5-3-7) are respectively formed in two sides of the middle partition ring (5-3-2) at the connection position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810565817.1A CN108980837B (en) | 2018-06-04 | 2018-06-04 | Environment-friendly energy-saving combustion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810565817.1A CN108980837B (en) | 2018-06-04 | 2018-06-04 | Environment-friendly energy-saving combustion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980837A CN108980837A (en) | 2018-12-11 |
| CN108980837B true CN108980837B (en) | 2020-08-21 |
Family
ID=64540001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810565817.1A Active CN108980837B (en) | 2018-06-04 | 2018-06-04 | Environment-friendly energy-saving combustion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980837B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB353623A (en) * | 1930-06-06 | 1931-07-30 | Herman Klein | Improvements in or relating to incinerator structures |
| CN2386329Y (en) * | 1999-07-21 | 2000-07-05 | 赵国朝 | Incinerator with built-in tertiary combustion chamber |
| CN2447644Y (en) * | 2000-10-20 | 2001-09-12 | 聂永丰 | Vertical converter type house refuse pyrolising and gasifying incinerator |
| CN2658586Y (en) * | 2003-11-18 | 2004-11-24 | 吴柏梁 | Smoke control type medical waste material pyrolytic incinerator |
| CN103773400B (en) * | 2012-10-19 | 2016-01-13 | 神华集团有限责任公司 | Rotatable heater |
| CN203517809U (en) * | 2013-10-20 | 2014-04-02 | 乌鲁木齐奥森碳环生物能源有限公司 | Garbage thermal decomposition and dry distillation gasifier |
-
2018
- 2018-06-04 CN CN201810565817.1A patent/CN108980837B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980837A (en) | 2018-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202350302U (en) | Rice husk combustion hot-blast stove | |
| CN105276806A (en) | High-temperature hot-blast stove for dense tobacco curing barn | |
| CN205664362U (en) | Automatic combustion apparatus of living beings granule | |
| CN202989072U (en) | Furnace bottom structure of gasifier | |
| CN108980837B (en) | Environment-friendly energy-saving combustion equipment | |
| CN108758653B (en) | Rotary furnace plate for environment-friendly energy-saving combustion equipment | |
| CN210486064U (en) | Modular boiler | |
| CN202141190U (en) | Biomass energy hot-blast stove | |
| CN102261739B (en) | Biomass energy hot blast stove | |
| CN103939947A (en) | Biomass furnace | |
| CN207849383U (en) | A kind of medical waste incineration furnace of environmental protection | |
| CN104075314B (en) | A kind of biological particles suspension fired boiler | |
| CN201093544Y (en) | Biomass particle cooking, warming multi-purpose stove | |
| CN115029159A (en) | Production equipment and production method for tar-free low-nitrogen biomass gas capable of continuously operating | |
| CN201155745Y (en) | Granular fuel combustion apparatus | |
| CN204079916U (en) | Biomass gasifying furnace | |
| CN109082304B (en) | Automatic control household garbage pyrolysis gasifier | |
| CN111442637A (en) | Heating device of grain drying tower | |
| CN208804680U (en) | A kind of external airway device of refuse pyrolysis gasification furnace | |
| CN104130803A (en) | Downdraft-type biomass gasification set | |
| CN205351297U (en) | Gasification burner | |
| CN211625706U (en) | High-efficient living beings hot-blast furnace | |
| CN212205563U (en) | Heating device of grain drying tower | |
| CN214536144U (en) | Full-automatic high-efficient living beings gasification combustor | |
| CN205119468U (en) | Intensive high temperature hot air stove for tobacco flue -curing house |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |