CN105927956A - Boiler - Google Patents
Boiler Download PDFInfo
- Publication number
- CN105927956A CN105927956A CN201610335146.0A CN201610335146A CN105927956A CN 105927956 A CN105927956 A CN 105927956A CN 201610335146 A CN201610335146 A CN 201610335146A CN 105927956 A CN105927956 A CN 105927956A
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- China
- Prior art keywords
- boiler
- chamber
- wall
- unicom
- steam pipe
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a boiler which comprises an outer wall and an inner wall. The outer wall and the inner wall are sealed to form a water storage cavity; a steam chamber is arranged at the top of the water storage cavity; a slagging cavity, a combustion chamber, an air cavity and a high-temperature cavity are sequentially arranged in the inner wall from bottom up; the air cavity communicates with an upper air inlet; the slagging cavity communicates with a lower air inlet; a plurality of ventilating ducts communicating with the air cavity are arranged in the combustion chamber; a plurality of air spouts are formed in the side walls of the ventilating ducts; a plurality of fire tubes are uniformly arranged in the water storage cavity; the bottoms of the fire tubes communicate with the combustion chamber; the tops of the fire tubes communicate with the top of the high-temperature cavity; the bottom of a smoke pipe penetrates through the outer wall and the inner wall, and the smoke pipe discharges smoke out of the boiler. The boiler effectively avoids pipe explosion and is high in energy utilization ratio.
Description
Technical field
The present invention relates to boiler technology field, particularly relate to the vertical boiler of the high new construction of a kind of energy-saving efficiency.
Background technology
Current boiler there is problems in that and generally arranges water pipe in boiler, due to water quality, water
Easily fouling in pipe, incrustation scale is by after water-pipe blockage, and water pipe can not get the cooling of water and causes booster；Traditional fire
The capacity usage ratio of pipe boiler is relatively low.
Summary of the invention
It is an object of the invention to provide a kind of steam boiler, thus solve aforementioned present in prior art asking
Topic.
To achieve these goals, the technical solution used in the present invention is as follows: a kind of steam boiler, including outside
Wall and inwall, described outer wall and described inwall are closed and are formed water storage cavity, and the top of described water storage cavity is vapor chamber,
The inside of described inwall sequentially consists of deslagging chamber, combustor, air chamber and high temperature chamber；
Described air chamber and enterprising air port UNICOM, described deslagging chamber and lower air inlet UNICOM, in described combustor
It is provided with multiple and described air chamber UNICOM ventilation duct, the sidewall of described ventilation duct is provided with multiple sky
Gas blowout mouth；
Multiple fire tube, the bottom of described fire tube and described combustor UNICOM it is evenly arranged with in described water storage cavity,
The top UNICOM in the top of described fire tube and high temperature chamber, the bottom of described smoke exhaust pipe penetrates described outer wall and described
Inwall discharges flue gas outside boiler；
Preferably, also include that steam pipe, described steam pipe are arranged at described high temperature intracavity, described steam pipe
Upper end and described vapor chamber UNICOM, the lower end of described steam pipe penetrates described inner and outer wall and discharges outside boiler
Steam.
Preferably, described steam pipe described high temperature intracavity spiral be set to coil-like.
Preferably, described steam pipe is arranged in vertical and horizontal complications at described high temperature intracavity.
Preferably, also include that water preheater, described water preheater include casing, be provided with in described casing
Dividing plate and lower clapboard, close between described upper spacer and described lower clapboard and form preheating water chamber, described casing
Bottom and described smoke exhaust pipe UNICOM, also include multiple smoke-fire-tube, and described smoke-fire-tube passes described preheating water cavity,
Also include that preheater water inlet and preheater outlet, described preheater water inlet join with the inlet channel of boiler
Logical, described preheater outlet is by pipeline and water pump and boiler feed water mouth UNICOM.
Preferably, described box bottom is provided with lower cone chamber, and the bottom in lower cone chamber is provided with cleaning door.
Preferably, the dividing plate between described air chamber and described combustor offers multiple air port.
Preferably, the bottom of described outer wall is provided with multiple hand hole.
Preferably, described steam pipe differing heights arranges multiple steam (vapor) outlet.
Preferably, the top of described boiler is provided with vapor chamber, and the intracavity section of described vapor chamber is long-pending less than institute
The intracavity section of the outer wall stating boiler amasss, and, the upper end of described steam pipe is passed through the top of described vapor chamber.
The invention has the beneficial effects as follows:
1) present invention is by arranging fire tube between the outer wall and inwall of boiler, outside fire tube after fouling, and heating
Shi Huoguan expands, incrustation scale meeting Automatic-falling, thus effectively prevent the generation of booster.
2) present invention is by arranging steam pipe at high temperature intracavity, and steam pipe absorbs the waste heat of high temperature intracavity flue gas,
High temperature saturated vapor can be produced at lower pressures, solve and can only lean on raising steam pressure for a long time
Improve the technical barrier of vapor (steam) temperature, the most energy-conservation but also safety.
3) present invention is provided with water preheater, and the water of boiler is carried out pre-by the waste heat utilizing boiler to discharge flue gas
Heat, further improves the utilization rate of energy.
4) present invention carries out secondary oxygenation to burned flame, improves the combustion rate of fuel, solves boiler
The problem of black smoke is produced, energy-conserving and environment-protective because burning is insufficient.
5) the vapor chamber sectional area that boiler top is arranged is less, and under equal steam pressure, its inside is born
Pressure less, improve the safety coefficient of boiler.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of an embodiment of the present invention；
Fig. 2 is the A direction view of embodiment illustrated in fig. 1 steam pipe of the present invention；
Fig. 3 is the structure principle chart of another kind embodiment of the present invention；
Reference: 1-outer wall, 2-inwall, 3-water storage cavity, 3.1-vapor chamber, 3.2-hand hole, 4-deslagging chamber,
Air inlet under 5-, 6-combustor, the enterprising air port of 7-, 8-air chamber, 9-fire tube, 10-smoke exhaust pipe, 11-pot
Stove water inlet, 12-steam pipe, 12.1-steam (vapor) outlet, 13-ventilation duct, 13.1-air port, 14-water is pre-
Hot device, 14.1-preheater water inlet, 14.2-preheater outlet, 14.3-smoke-fire-tube, 14.4-preheating water
Chamber, 14.5-lower cone chamber, 14.6-cleaning door, 14.7-lower clapboard, 14.8-upper spacer, 15-fire grate, 16-
High temperature chamber, 17-water pump, 18-vapor chamber.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, to this
Invention is further elaborated.Should be appreciated that detailed description of the invention described herein is only in order to solve
Release the present invention, be not intended to limit the present invention.
Embodiment 1: as it is shown in figure 1, a kind of steam boiler, including outer wall 1 and inwall 2, described outer wall 1 and institute
Stating inwall 2 and close formation water storage cavity 3, the top of described water storage cavity 3 is vapor chamber 3.1, the inside of described inwall 2
Sequentially consist of deslagging chamber 4, combustor 6, air chamber 8 and high temperature chamber 16；Described air chamber 8 is with enterprising
Air port 7 UNICOM, described deslagging chamber 4 and lower air inlet 5 UNICOM, be provided with multiple and described in described combustor 6
The ventilation duct 13 of air chamber 8 UNICOM, is provided with multiple air port 13.1 on the sidewall of described ventilation duct 13；
Ventilation duct 13 and air port 13.1 supply oxygen to flame so that it is in fuel gas fully burn.
Multiple fire tube 9, the bottom of described fire tube 9 and described combustor 6 it is evenly arranged with in described water storage cavity 3
Logical, the top of described fire tube 9 and the top UNICOM in high temperature chamber 16, can expand, by outside fire tube 9 after fire tube 9 heating
The fouling of wall cleans out automatically, thus effectively avoids the generation of booster, and improves the utilization of energy
Rate.
The bottom of described smoke exhaust pipe 10 penetrates described outer wall and described inwall 2 and discharges flue gas outside boiler；Also include
Steam pipe 12, described steam pipe 12 is arranged in described high temperature chamber 16, and the upper end of described steam pipe 12 is with described
Vapor chamber 3.1 UNICOM, the lower end of described steam pipe 12 penetrates described inwall 2 and outer wall and discharges steam outside boiler.
Described steam pipe 12 is set to coil-like in described high temperature chamber 16 inside turn.Steam pipe 12 is in high temperature chamber 16
The most further by flue gas, thus the saturated vapor of high temperature can be produced at lower pressures, test
Proving, 0.5 kilogram of pressure of the present invention is better than in prior art the technique effect to 10 kilograms of pressure of air pressurized.
It it is fire grate 15 between air chamber 8 and combustor 6.
The bottom of described outer wall 1 is provided with multiple hand hole 3.2, it is simple to clear up the incrustation scale after coming off.
Embodiment 2: as it is shown in figure 1, a kind of steam boiler, including outer wall 1 and inwall 2, described outer wall 1 and institute
Stating inwall 2 and close formation water storage cavity 3, the top of described water storage cavity 3 is vapor chamber 3.1, the inside of described inwall 2
Sequentially consist of deslagging chamber 4, combustor 6, air chamber 8 and high temperature chamber 16；Described air chamber 8 is with enterprising
Air port 7 UNICOM, described deslagging chamber 4 and lower air inlet 5 UNICOM, be provided with multiple and described in described combustor 6
The ventilation duct 13 of air chamber 8 UNICOM, is provided with multiple air port 13.1 on the sidewall of described ventilation duct 13；
Multiple fire tube 9, the bottom of described fire tube 9 and described combustor 6 UNICOM it is evenly arranged with in described water storage cavity 3,
The top of described fire tube 9 and the top UNICOM in high temperature chamber 16, the bottom of described smoke exhaust pipe 10 penetrate described outer wall and
Described inwall 2 discharges flue gas outside boiler；Also include that steam pipe 12, described steam pipe 12 are arranged at described high temperature
In chamber 16, the upper end of described steam pipe 12 and described vapor chamber 3.1 UNICOM, the lower end of described steam pipe 12 penetrates
Described inwall 2 and outer wall discharge steam outside boiler.
As shown in Figure 1, 2, described steam pipe 12 in vertical and horizontal tortuous setting, enters in described high temperature chamber 16
One step improves the contact area of steam pipe and flue gas, improves the utilization rate of energy.
Also include that water preheater 14, described water preheater 14 include casing, be provided with upper spacer in described casing
14.8 and lower clapboard 14.7, close between described upper spacer 14.8 and described lower clapboard 14.7 and form preheating water chamber
14.4, the bottom of described casing and described smoke exhaust pipe 10 UNICOM, also include multiple smoke-fire-tube 14.3, described cigarette
Fire tube 14.3, through described preheating water cavity 14.4, also includes preheater water inlet 14.1 and preheater outlet
14.2, described preheater water inlet 14.1 and the inlet channel UNICOM of boiler, described preheater outlet 14.2
By pipeline and water pump 17 and boiler feed water mouth 11 UNICOM.
Described box bottom is provided with lower cone chamber 14.5, and the bottom in lower cone chamber 14.5 is provided with cleaning door
14.6.Multiple air port 13.1 is offered on dividing plate between described air chamber 8 and described combustor 6.Institute
The bottom stating outer wall 1 is provided with multiple hand hole 3.2, for clearing up the impurity of boiler internal.At described steam pipe
Multiple steam (vapor) outlet 12.1 is set on 12 differing heights, different steamings can be selected according to the demand of vapor (steam) temperature
Vapor outlet 12.1.
Embodiment 3: the present embodiment is with the difference of embodiment 2, the present embodiment arranges steam at the top of boiler
Chamber 18, the intracavity section of described vapor chamber 18 amasss the intracavity section of the outer wall 1 less than described boiler and amasss, and,
The upper end of described steam pipe 12 is passed through the top of described vapor chamber 18.Relief valve can also be set at vapor chamber,
Improve boiler safety coefficient further.
By using technique scheme disclosed by the invention, obtain following beneficial effect:
1) present invention is by arranging multiple fire tube 9, fouling outside fire tube 9 between the outer wall 1 and inwall 2 of boiler
After, during heating, fire tube 9 expands, incrustation scale meeting Automatic-falling, thus effectively prevent the generation of booster.
2) present invention is by arranging steam pipe 12 in high temperature chamber 16, and steam pipe 12 has fully absorbed high temperature chamber 16
The waste heat of interior flue gas, can produce the saturated vapor of high temperature at lower pressures, only solves for a long time
Can improve the technical barrier of vapor (steam) temperature by improving steam pressure, technical scheme is the most energy-conservation but also pacifies
Entirely.
3) present invention is provided with water preheater 14, and the water of boiler is carried out by the waste heat utilizing boiler to discharge flue gas
Preheating, further improves the utilization rate of energy.
4) present invention carries out secondary oxygenation to burned flame, improves the combustion rate of fuel, solves boiler
The problem of black smoke is produced, energy-conserving and environment-protective because burning is insufficient.
5) vapor chamber 18 sectional area that boiler top is arranged is less, and under equal steam pressure, its inside is held
The pressure being subject to is less, improves the safety coefficient of boiler.
The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this
A little improvements and modifications also should regard protection scope of the present invention.
Claims (10)
1. a boiler, including outer wall (1) and inwall (2), described outer wall (1) and described inwall (2)
Closing and form water storage cavity (3), the top of described water storage cavity (3) is vapor chamber (3.1), it is characterised in that
The inside of described inwall (2) sequentially consists of deslagging chamber (4), combustor (6), air chamber (8)
With high temperature chamber (16)；
Described air chamber (8) and enterprising air port (7) UNICOM, described deslagging chamber (4) and lower air inlet (5)
UNICOM, is provided with multiple and described air chamber (8) UNICOM ventilation duct (13) in described combustor (6),
The sidewall of described ventilation duct (13) is provided with multiple air port (13.1)；
Being evenly arranged with multiple fire tube (9) in described water storage cavity (3), the bottom of described fire tube (9) is with described
The top UNICOM in combustor (6) UNICOM, the top of described fire tube (9) and high temperature chamber (16), described row
The bottom of smoke pipe (10) penetrates described outer wall and described inwall (2) and discharges flue gas outside boiler.
Boiler the most according to claim 1, it is characterised in that also include steam pipe (12), described steaming
Steam pipe (12) is arranged in described high temperature chamber (16), the upper end of described steam pipe (12) and described steam
Chamber (3.1) UNICOM, the lower end of described steam pipe (12) penetrates described inwall (2) and outer wall outside boiler
Discharge steam.
Boiler the most according to claim 2, it is characterised in that described steam pipe (12) is at described high temperature
Chamber (16) inside turn is set to coil-like.
Boiler the most according to claim 2, it is characterised in that described steam pipe (12) is at described high temperature
Chamber (16) is inherent vertical and the most tortuous to be arranged.
5. according to boiler described in any one in Claims 1-4, it is characterised in that also include water preheater
(14), described water preheater (14) includes casing, be provided with in described casing upper spacer (14.8) and under
Dividing plate (14.7), closes between described upper spacer (14.8) and described lower clapboard (14.7) and forms preheating water
Chamber (14.4),
The bottom of described casing and described smoke exhaust pipe (10) UNICOM,
Also including multiple smoke-fire-tube (14.3), described smoke-fire-tube (14.3) passes described preheating water cavity (14.4),
Also include preheater water inlet (14.1) and preheater outlet (14.2), described preheater water inlet
(14.1) with the inlet channel UNICOM of boiler, described preheater outlet (14.2) passes through pipeline and water pump
(17) with boiler feed water mouth (11) UNICOM.
Boiler the most according to claim 5, it is characterised in that described box bottom is provided with lower cone chamber
(14.5), the bottom of lower cone chamber (14.5) is provided with cleaning door (14.6).
Boiler the most as claimed in any of claims 1 to 4, it is characterised in that described air chamber (8)
And offer multiple air port (13.1) on the dividing plate between described combustor (6).
Boiler the most as claimed in any of claims 1 to 4, it is characterised in that described outer wall (1)
Bottom be provided with multiple hand hole (3.2).
Boiler the most as claimed in any of claims 2 to 4, it is characterised in that at described steam pipe
(12) multiple steam (vapor) outlet (12.1) is set on differing heights.
Boiler the most as claimed in any of claims 2 to 4, it is characterised in that the top of described boiler
Portion is provided with vapor chamber (18), and the intracavity section of described vapor chamber (18) amasss the outer wall (1) less than described boiler
Intracavity section amass, and, the upper end of described steam pipe (12) is passed through the top of described vapor chamber (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335146.0A CN105927956B (en) | 2016-05-16 | 2016-05-16 | A kind of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335146.0A CN105927956B (en) | 2016-05-16 | 2016-05-16 | A kind of boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927956A true CN105927956A (en) | 2016-09-07 |
| CN105927956B CN105927956B (en) | 2018-05-15 |
Family
ID=56841852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610335146.0A Active CN105927956B (en) | 2016-05-16 | 2016-05-16 | A kind of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927956B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556102A (en) * | 2018-12-29 | 2019-04-02 | 吴荣彪 | A kind of double steam boilers |
| CN113669707A (en) * | 2021-08-25 | 2021-11-19 | 浙江昇禾节能环保设备有限公司 | High-efficient gas utilization device of steam generator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4390062A (en) * | 1981-01-07 | 1983-06-28 | The United States Of America As Represented By The United States Department Of Energy | Downhole steam generator using low pressure fuel and air supply |
| CN2416427Y (en) * | 1999-12-24 | 2001-01-24 | 俞建荣 | Environment protection vertical boiler |
| CN101413714A (en) * | 2007-10-15 | 2009-04-22 | 鞍钢集团房产物业公司 | Vertical environment protection boiler |
| CN102287911A (en) * | 2011-06-03 | 2011-12-21 | 张书峰 | Normal-pressure hot water boiler |
| CN204880067U (en) * | 2015-08-12 | 2015-12-16 | 朱永彪 | Vertical gas boiler |
| CN205859965U (en) * | 2016-05-16 | 2017-01-04 | 平原县三兴饲料厂 | A kind of boiler |
-
2016
- 2016-05-16 CN CN201610335146.0A patent/CN105927956B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4390062A (en) * | 1981-01-07 | 1983-06-28 | The United States Of America As Represented By The United States Department Of Energy | Downhole steam generator using low pressure fuel and air supply |
| CN2416427Y (en) * | 1999-12-24 | 2001-01-24 | 俞建荣 | Environment protection vertical boiler |
| CN101413714A (en) * | 2007-10-15 | 2009-04-22 | 鞍钢集团房产物业公司 | Vertical environment protection boiler |
| CN102287911A (en) * | 2011-06-03 | 2011-12-21 | 张书峰 | Normal-pressure hot water boiler |
| CN204880067U (en) * | 2015-08-12 | 2015-12-16 | 朱永彪 | Vertical gas boiler |
| CN205859965U (en) * | 2016-05-16 | 2017-01-04 | 平原县三兴饲料厂 | A kind of boiler |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556102A (en) * | 2018-12-29 | 2019-04-02 | 吴荣彪 | A kind of double steam boilers |
| CN109556102B (en) * | 2018-12-29 | 2024-04-09 | 吴荣彪 | Double-steam boiler |
| CN113669707A (en) * | 2021-08-25 | 2021-11-19 | 浙江昇禾节能环保设备有限公司 | High-efficient gas utilization device of steam generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105927956B (en) | 2018-05-15 |
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Effective date of registration: 20210707 Address after: 253600 west head of Government Road, Zhanghua Town, Pingyuan County, Dezhou City, Shandong Province Patentee after: Pingyuan Tongyuan Trading Co.,Ltd. Address before: 253000 104, Zhang Guan Dian Cun, Wang Miao Town, Pingyuan County, Dezhou, Shandong Patentee before: PINGYUAN COUNTY SANXING FEED FACTORY |
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