CN202140107U - Ventilation air non-closed connecting device - Google Patents
Ventilation air non-closed connecting device Download PDFInfo
- Publication number
- CN202140107U CN202140107U CN201120231973U CN201120231973U CN202140107U CN 202140107 U CN202140107 U CN 202140107U CN 201120231973 U CN201120231973 U CN 201120231973U CN 201120231973 U CN201120231973 U CN 201120231973U CN 202140107 U CN202140107 U CN 202140107U
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- weary wind
- pipeline
- weary
- air
- airtight
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Abstract
The utility model relates to a ventilation air non-closed connecting device, which comprises a ventilation air drainage pipe (1), a delivering connecting pipeline (3) and an air exhausting fan (7) arranged at an air outlet of the delivering connecting pipeline (3). The ventilation air non-closed connecting device is characterized by further comprising a ventilation air inhaled cover (2) and a determination part (4). The ventilation air inhaled cover (2) is arranged between an air exhausting outlet of the ventilation air drainage pipe (1) and an air inlet of the delivering connecting pipeline (3) and respectively communicated with the ventilation air drainage pipe (1) and the delivering connecting pipeline (3). The determination part (4) is arranged on the delivering connecting pipeline (3) between the ventilation air inhaled cover (2) and a maintenance part (6). The ventilation air non-closed connecting device is applied to a ventilation air delivering system and has the advantages of automatically adjusting delivery and spread of the ventilation air, filtering dust and impurities in the ventilation air, ensuring safety of ventilation air delivery, saving energy, protecting environment and being reliable in use.
Description
Technical field
The utility model relates to a kind of coal mine gas conveying equipment, is specifically related to a kind of non-airtight linkage that is used for weary wind induction system.
Background technology
Industries such as mine ventilation gas and chemical industry, papermaking, wastewater treatment contain the industrial tail gas of fuel gas, are commonly called as weary wind.The main component of weary wind is a methane, seldom produces pollutant after the burning, belongs to the high-quality clean gas energy, but also is simultaneously one of great potential safety hazard in colliery and the commercial production.For improving safety, rely on a large amount of ventilations directly to the weary wind of airborne release usually, not only caused the serious waste of limited non-renewable resources, and atmospheric environment has been caused huge pollution, aggravated greenhouse effect.Therefore, carry out weary wind and utilize Study on Technology,, reduce greenhouse gas emission, improve atmosphere quality, promote the Environmental Protection in China industry development, have very important significance for effectively utilizing the coal mine gas resource.
It is that a kind of methane that will lack in the wind through thermal cracking is transformed into carbon dioxide that the weary wind of prior art utilizes equipment, and produces the device of heat, and it also has accommodation to the methane concentration in the mine air-lack.When concentration is crossed when low; Weary wind utilizes the heat energy that produces in the equipment can not satisfy the supply of self institute's calorific requirement, and it is normal self-operating just, and the concentration of weary wind is just very low originally; If in course of conveying, there is a large amount of air to get into, certainly will will have influence on the normal operation that weary wind utilizes equipment.
At present, also not weary at home wind utilizes the conveying linkage of coordinative composition of equipments, because no matter whether weary wind is utilized; The coalmine ventilation well all needs pressure air draft in 24 hours; Therefore weary wind transport and the seal that should guarantee being connected of weary wind exhaust duct to carry, when preventing that again weary wind from utilizing equipment to shut down, weary general mood body utilizes enrichment in the equipment at weary wind; Can not in time diffuse, have unpredictable danger.
The utility model content
The purpose of the utility model provides the non-airtight linkage of a kind of weary wind, can regulate weary wind automatically and carry and diffuse, and can filter dust and impurity in the weary wind, improves weary wind quality, ensures weary wind delivery safety, and energy-conserving and environment-protective, use are reliably.
In order to achieve the above object, the utility model is realized through following technical scheme:
The non-airtight linkage of a kind of weary wind comprises weary wind exhaust duct, carries the blower fan of bleeding that connects pipeline and be arranged on conveying tube connector road air outlet; It is characterized in that, also comprise weary wind inhalation mask and components of assays;
Wherein, the air outlet that described weary wind inhalation mask is located at weary wind exhaust duct is connected between the air intake of pipeline with conveying, is connected the pipeline perforation with weary wind exhaust duct with carrying respectively.Described components of assays is arranged on weary wind inhalation mask and is connected on the pipeline with conveying between the Awaiting Parts.
The non-airtight linkage of above-mentioned weary wind; Wherein, described weary wind inhalation mask comprises top corner iron frame, bottom corner iron frame, many gripper shoes, four jiaos of shroudings of polylith, many double threaded screws, many studs, organizes fixedly angle bead of moving vane and many more.
Wherein, described many gripper shoes are evenly spaced being arranged between top corner iron frame and the bottom corner iron frame vertically, forms the ladder cavity framework.Described each four jiaos of shrouding are separately positioned between the adjacent shore plates of four jiaos of ladder-shaped frames, are provided with the hole of leaving a blank at bottom corner iron frame four jiaos.Described many double threaded screws are through stud, and laterally evenly spaced being arranged between the adjacent gripper shoe forms several rectangle spaces.Fixedly angle bead is adopted at the described top of respectively organizing moving vane, flexibly connects with every double threaded screw; Every group of moving vane is made up of the multi-disc moving vane, and each moving vane area equates that two moving vane overlap joints cover up and down.
The non-airtight linkage of above-mentioned weary wind, wherein, described weary wind inhalation mask is located at the air outlet of weary wind exhaust duct, and non-airtight connection the between the air intake of weary wind inhalation mask and the air outlet of weary wind exhaust duct, the scope of being provided with is the joint gap of 50 ~ 100mm.
The non-airtight linkage of above-mentioned weary wind, wherein, described weary wind inhalation mask air outlet top corner iron frame is provided with flange, is connected the airtight connection of pipeline with conveying through nut, bolt.
The non-airtight linkage of above-mentioned weary wind, wherein, the suction air quantity of described weary wind inhalation mask is 70% exhaust air rate of weary wind discharge rate; 30% exhaust air rate of weary wind discharge rate is discharged from the hole of leaving a blank of four jiaos of joint gap and weary wind inhalation masks respectively.
The non-airtight linkage of above-mentioned weary wind, wherein, described bottom corner iron frame equates with weary wind exhaust duct air outlet sectional area; The top corner iron frame is connected pipeline air intake sectional area with conveying and equates.
The non-airtight linkage of above-mentioned weary wind, wherein, described conveying connects 7/10 sectional area of the sectional area of pipeline air intake for weary wind exhaust duct air outlet.
The non-airtight linkage of above-mentioned weary wind, wherein, described components of assays comprises weary wind densimeter, weary wind flow meter, they are successively set on to carry and connect on the pipeline.
The non-airtight linkage of above-mentioned weary wind wherein, also comprises Awaiting Parts and filter element.
Wherein, described Awaiting Parts comprises Maintenance Room, and is arranged on the glass vision panel on the Maintenance Room door.Described Awaiting Parts two ends are provided with flange, are connected the airtight connection of pipeline with conveying through bolt, nut.Described filter element is vertically set in the maintenance chamber of Awaiting Parts, and this filter element comprises framework and is arranged on the filter net sheet in the framework; Described filter net sheet adopts the stainless steel metal web material, and filtering holes is evenly gathered.
The weary non-airtight linkage of wind of the utility model compared with prior art has the following advantages:
1, the utility model is owing to be provided with the impartial moving vane of many group areas on weary wind inhalation mask; Belong to the plenum chamber structure; The gas pressure that every moving vane is born equates that it is even atmospheric pressure, and the folding of dependence moving vane has guaranteed the conveying of weary wind and diffused.
2, the utility model is because the exhaust air rate of the air outlet of weary wind exhaust duct is constant, and the design of the blower fan of bleeding sucks 70% exhaust air rate of air quantity for weary wind discharge rate, and weary wind inhalation mask pressurized is balanced, and moving vane remains closed, and guarantees weary wind conveying capacity.When the suction air volume of the blower fan of bleeding reduces, to carry to connect manifold pressure and increase, moving vane is outwards dug by the forced-ventilated wind pressure, evenly diffuses weary wind.
3, the utility model provides emission quotas because there are joint gap in weary wind inhalation mask and non-airtight connection of the air outlet of weary wind exhaust duct; And four jiaos of weary wind inhalation mask are provided with the hole of leaving a blank, and quicken weary wind direction and discharge outward.When the suction air volume of the blower fan of bleeding reduces or shuts down; The exhaust air rate of the air outlet of weary wind exhaust duct connects manifold pressure much larger than carrying; Weary wind directly discharges through the joint gap and the hole of leaving a blank; The moving vane pressurized is outwards dug simultaneously, has played and has diffused weary wind action jointly, has avoided carrying the danger that connects this enrichment of pipeline Neva.
4, the utility model is owing to be provided with weary wind components of assays, and through the concentration and the flow parameter of weary wind in the components of assays monitoring pipeline, the rotating speed of bleeding regulating blower fan is regulated conveying capacity, ensures weary wind delivery safety.
5, the utility model is because moving vane adopts stainless steel material; Corrosion resistance, heat resistance, low temperature intensity, satisfactory mechanical property are easy to welding, long service life; Be convenient to maintenance; Two moving vanes adopt the overlap joint coverage mode up and down, when suction air volume reduces, and entrained air when avoiding the moving vane pressurized slightly to dig.
6, the utility model is owing to be provided with filter element, and built-in filter net sheet filters dust, the impurity of sneaking into when weary wind is carried; Guarantee weary wind conveying quality; Filter net sheet adopts the stainless steel metal web material to process, and is convenient to maintenance, regularly cleans the net sheet; Remove the impurity of attachment removal on it, promptly reusable.
7, the utility model is owing to be provided with Maintenance Room; Be convenient to personnel and get into the pipe inspection inner case, safeguard, overhaul and regularly work such as cleaning filter net sheet, the Maintenance Room door is provided with glass vision panel; Be convenient to staff's walkaround inspection situation, guarantee maintainer's safety.
8, the utility model is owing to adopt weary wind to suck the non-airtight connection of bell-type, and the area that takes up space is little, and Technological Economy property is high, reliable operation.
9, the utility model diffuses weary wind owing to adopt the suction air volume of the blower fan of bleeding to change through the moving vane folding, and automaticity is high, reduces running cost, guarantees to use reliable.
Description of drawings
Fig. 1 is the application implementation example structural representation of the weary non-airtight linkage of wind of the utility model.
Fig. 2 is the structural representation of the weary wind inhalation mask of the weary non-airtight linkage of wind of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done explanation further.
Below in conjunction with Fig. 1, Fig. 2 the utility model is done further elaboration.
As shown in Figure 1, the non-airtight linkage of a kind of weary wind comprises weary wind exhaust duct 1, carries to connect pipeline 3, filter element 5, Awaiting Parts 6 and be arranged on and carry the blower fan 7 of bleeding that connects pipeline 3 air outlets; Also comprise weary wind inhalation mask 2 and components of assays 4.
The air outlet that weary wind inhalation mask 2 is located at weary wind exhaust duct 1 is connected between the air intake of pipeline 3 with conveying, is connected pipeline 3 perforations with weary wind exhaust duct 1 with carrying respectively.Components of assays 4 is arranged on weary wind inhalation mask 2 and is connected on the pipeline 3 with conveying between the Awaiting Parts 6.Awaiting Parts 6 is arranged on components of assays 4 and is connected on the pipeline 3 with the conveying of bleeding between the blower fan 7, and filter element 5 is arranged in the pipeline in the middle of the Awaiting Parts 6.
Cooperation is referring to shown in Figure 2, and weary wind inhalation mask 2 comprises top corner iron frame 211, bottom corner iron frame 212, many gripper shoes 22, four jiaos of shroudings 24 of polylith, many double threaded screws 25, many studs 26, organize fixedly angle bead 28 of moving vane 27 and many more.
Top corner iron frame 211 and bottom corner iron frame 212 are separately positioned on the top and bottom that lacks wind inhalation mask 2.Many gripper shoes 22, vertically evenly spaced being arranged between top corner iron frame 211 and the bottom corner iron frame 212 forms ladder cavity framework 21.Each four jiaos of shrouding 24 adopts steel sheet to be welded between the adjacent shore plates 22 of 21 4 jiaos of ladder-shaped frames respectively, is provided with the hole 23 of leaving a blank at bottom corner iron frame 212 four jiaos.Each double threaded screw 25, through stud 26, laterally evenly spaced being fixed between the adjacent gripper shoe 22 forms several rectangle spaces.Each organizes moving vane 27; Fixedly angle bead 28 and 25 flexible connections of every double threaded screw are adopted in the top, and every group of moving vane is made up of the multi-disc moving vane, and each moving vane area equates; Two moving vane overlap joints cover up and down, and moving vane adopts stainless steel material to process in the present embodiment.
Weary wind inhalation mask 2 is located at the air outlet of weary wind exhaust duct 1, and non-airtight connection the between the air intake of weary wind inhalation mask 2 and the air outlet of weary wind exhaust duct, the scope of being provided with is the joint gap 11 of 50 ~ 100mm.
Weary wind inhalation mask 2 air outlet top corner iron frame 211 are provided with flange, are connected pipeline 3 airtight connections with conveying through nut, bolt.
The suction air quantity of weary wind inhalation mask 2 is 70% exhaust air rate of weary wind discharge rate.30% exhaust air rate of weary wind discharge rate reaches hole 23 discharges of leaving a blank of four jiaos of weary wind inhalation masks respectively from joint gap 11.
The bottom corner iron frame 212 of weary wind inhalation mask 2 equates that with weary wind exhaust duct 1 air outlet sectional area top corner iron frame 211 is connected pipeline 3 air intake sectional areas with conveying and equates.Carry the sectional area that connects pipeline 3 air intakes for lacking 7/10 sectional area of airduct road 1 air outlet.
Components of assays 4 comprises weary wind densimeter 41, weary wind flow meter 42, and they are successively set on to carry and connect on the pipeline 3.
Awaiting Parts 6 comprises Maintenance Room 63, and is arranged on the glass vision panel 631 on 63 of the Maintenance Rooms, and Awaiting Parts 6 two ends are provided with flange 61,62, are connected pipeline 3 airtight connections with conveying through bolt, nut;
Awaiting Parts 6 comprises Maintenance Room 63 and is arranged on the glass vision panel 631 on 63 of the Maintenance Rooms.Awaiting Parts 6 two ends are provided with flange 61,62, are connected pipeline 3 airtight connections with conveying through bolt, nut.
During the utility model The field, as shown in Figure 1 again, the air inlet port of the weary wind inhalation mask 2 of the non-airtight linkage of a kind of weary wind is corresponding with the air outlet of weary wind exhaust duct 1, and its gas outlet is connected pipeline 3 through flange, bolt, the airtight connection of nut with conveying.Weary wind inhalation mask 2 is trapezoidal cavity structure, is connected pipeline 3 with air outlet, the conveying of weary wind exhaust duct 1 and connects.Carry to connect and be respectively equipped with weary wind components of assays 4, filter element 5, Awaiting Parts 6, the blower fan 7 of bleeding on the pipeline 3.
The operating principle of the utility model is following, because the air output of weary wind exhaust duct air outlet is a steady state value, the air outlet of weary wind exhaust duct 1 makes progress air-out to weary wind inhalation mask 2; When the suction air volume of the blower fan 7 of bleeding less than design flow or when shutting down, carry to connect pipeline 3 internal pressures and increase, organize moving vane 26 more and outwards suppressed and dig; Evenly diffuse weary wind,, accelerate weary wind and diffuse because four jiaos of weary wind inhalation mask 2 are provided with the hole 23 of leaving a blank; And there is joint gap 11 in weary wind inhalation mask 2 with weary wind exhaust duct air outlet 1; The sufficient space of diffusing is provided, and weary wind avoids weary wind carrying the danger that connects enrichment in the pipeline through hole 23 and the joint gap 11 direct air drafts of leaving a blank.When the suction air volume of the blower fan of bleeding reached the design suction air volume, the air outlet of weary wind exhaust duct 1 made progress air draft to weary wind inhalation mask 2, because two moving vanes 27 adopt overlap joint to cover entrained air when avoiding blade slightly to dig up and down.Weary wind is delivered to carry through weary wind inhalation mask 2 and connects pipeline 3, and the built-in filter net sheet 52 of process filter element 5 will lack dust, the contaminant filter of sneaking in the wind, and the weary wind of the dry cleansing after the filtration continues on to later use.
For detecting the gaseous state of weary wind; The weary wind feed flow of control; According to the weary wind flow meter 41 of weary wind components of assays 4, concentration and the flow number that weary wind densimeter 42 shows weary wind; The rotating speed of bleeding regulating blower fan 7 is regulated and is carried the weary air quantity that connects in the pipeline 3, guarantees to be delivered to the weary wind quality of later use.
Awaiting Parts 6 is provided with Maintenance Room 63, is convenient to the maintenance personal and gets into that pipeline is safeguarded and maintenance and cleaning and filtering net sheet, rejects the granule foreign that adheres on the stainless steel metal filter net sheet 52.Maintenance Room 63 often is in closed condition, avoids air to sneak into.In case equipment breaks down, the maintenance personal can get into immediately in the Maintenance Room 63 and safeguard and service work, guarantees to lack wind and normally carries.63 of Maintenance Rooms are provided with glass vision panel 631, are convenient to the staff and make an inspection tour the maintenance situation.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection domain of the utility model should be limited appended claim.
Claims (9)
1. the non-airtight linkage of weary wind comprises weary wind exhaust duct (1), carries to connect pipeline (3) and be arranged on and carry the blower fan of bleeding (7) that connects pipeline (3) air outlet; It is characterized in that, also comprise weary wind inhalation mask (2) and components of assays (4);
The air outlet that described weary wind inhalation mask (2) is located at weary wind exhaust duct (1) is connected between the air intake of pipeline (3) with conveying, is connected pipeline (3) perforation with weary wind exhaust duct (1) with carrying respectively;
Described components of assays (4) is arranged on weary wind inhalation mask (2) and is connected on the pipeline (3) with conveying between the Awaiting Parts (6).
2. the non-airtight linkage of a kind of weary wind as claimed in claim 1; It is characterized in that described weary wind inhalation mask (2) comprises top corner iron frame (211), bottom corner iron frame (212), many gripper shoes (22), four jiaos of shroudings of polylith (24), many double threaded screws (25), many studs (26), organize fixedly angle bead (28) of moving vane (27) and many more;
Described many gripper shoes (22) are evenly spaced being arranged between top corner iron frame (211) and the bottom corner iron frame (212) vertically, forms ladder cavity framework (21);
Described each four jiaos of shrouding (24) are separately positioned between the adjacent shore plates (22) of (21) four jiaos of ladder-shaped frames, are provided with the hole of leaving a blank (23) at bottom corner iron frame (212) four jiaos;
Described each double threaded screw (25) is through stud (26), and laterally evenly spaced being arranged between the adjacent gripper shoe (22) forms several rectangle spaces;
Fixedly angle bead (28) is adopted at the described top of respectively organizing moving vane (27), flexibly connects with every double threaded screw (25); Every group of moving vane is made up of the multi-disc moving vane, and each moving vane area equates that two moving vane overlap joints cover up and down.
3. the non-airtight linkage of a kind of weary wind as claimed in claim 1; It is characterized in that; Described weary wind inhalation mask (2) is located at the air outlet of weary wind exhaust duct (1); Non-airtight connection the between the air intake of weary wind inhalation mask (2) and the air outlet of weary wind exhaust duct (1), the scope of being provided with is the joint gap (11) of 50 ~ 100mm.
4. the non-airtight linkage of a kind of weary wind as claimed in claim 1 is characterized in that described weary wind inhalation mask (2) air outlet top corner iron frame (211) is provided with flange, is connected the airtight connection of pipeline (3) with conveying through nut, bolt.
5. the non-airtight linkage of a kind of weary wind as claimed in claim 1 is characterized in that, the suction air quantity of described weary wind inhalation mask (2) is 70% exhaust air rate of weary wind discharge rate; 30% exhaust air rate of weary wind discharge rate reaches the hole of leaving a blank (23) discharge of four jiaos of weary wind inhalation masks respectively from joint gap (11).
6. the non-airtight linkage of a kind of weary wind as claimed in claim 2 is characterized in that, described bottom corner iron frame (212) equates with weary wind exhaust duct (1) air outlet sectional area; Top corner iron frame (211) is connected pipeline (3) air intake sectional area with conveying and equates.
7. the non-airtight linkage of a kind of weary wind as claimed in claim 1 is characterized in that, described conveying connects 7/10 sectional area of the sectional area of pipeline (3) air intake for weary wind exhaust duct (1) air outlet.
8. the non-airtight linkage of a kind of weary wind as claimed in claim 1 is characterized in that, described components of assays (4) comprises weary wind densimeter (41), weary wind flow meter (42), and they are successively set on to carry and connect on the pipeline (3).
9. the non-airtight linkage of a kind of weary wind as claimed in claim 1 is characterized in that, also comprises Awaiting Parts (6) and filter element (5);
Described Awaiting Parts (6) comprises Maintenance Room (63) and is arranged on the glass vision panel (631) on Maintenance Room (63) door; Described Awaiting Parts (6) two ends are provided with flange (61,62), are connected the airtight connection of pipeline (3) with conveying through bolt, nut;
Described filter element (5) is vertically set in the maintenance chamber of Awaiting Parts (6); This filter element comprises framework (51) and is arranged on the filter net sheet (52) in the framework; Described filter net sheet (52) adopts the stainless steel metal web material, and filtering holes is evenly gathered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120231973U CN202140107U (en) | 2011-07-04 | 2011-07-04 | Ventilation air non-closed connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120231973U CN202140107U (en) | 2011-07-04 | 2011-07-04 | Ventilation air non-closed connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202140107U true CN202140107U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120231973U Expired - Fee Related CN202140107U (en) | 2011-07-04 | 2011-07-04 | Ventilation air non-closed connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202140107U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628370A (en) * | 2012-04-18 | 2012-08-08 | 丁汀 | Mobile natural ventilation and gas collecting device for underground mine |
| CN102865096A (en) * | 2011-07-04 | 2013-01-09 | 上海攀极投资有限公司 | Ventilation air methane (VAM) suction device |
| CN103790663A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Integrated camshaft |
| CN105401970A (en) * | 2015-12-23 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | Working method for mine ventilation air methane transport system |
| CN105822339A (en) * | 2016-04-13 | 2016-08-03 | 山东理工大学 | Mechanical adjusting type gas inlet and flow equalization system of ventilation air methane thermal reverse-flow oxidization device |
-
2011
- 2011-07-04 CN CN201120231973U patent/CN202140107U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865096A (en) * | 2011-07-04 | 2013-01-09 | 上海攀极投资有限公司 | Ventilation air methane (VAM) suction device |
| CN102865096B (en) * | 2011-07-04 | 2015-04-01 | 上海攀极投资有限公司 | Ventilation air methane (VAM) suction device |
| CN102628370A (en) * | 2012-04-18 | 2012-08-08 | 丁汀 | Mobile natural ventilation and gas collecting device for underground mine |
| CN103790663A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Integrated camshaft |
| CN105401970A (en) * | 2015-12-23 | 2016-03-16 | 哈尔滨锅炉厂有限责任公司 | Working method for mine ventilation air methane transport system |
| CN105401970B (en) * | 2015-12-23 | 2018-01-05 | 哈尔滨锅炉厂有限责任公司 | The method of work of mine air-lack induction system |
| CN105822339A (en) * | 2016-04-13 | 2016-08-03 | 山东理工大学 | Mechanical adjusting type gas inlet and flow equalization system of ventilation air methane thermal reverse-flow oxidization device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20170704 |