CN201954964U - Sealing device for trolley of sintering annular cooler - Google Patents
Sealing device for trolley of sintering annular cooler Download PDFInfo
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- CN201954964U CN201954964U CN2010206798652U CN201020679865U CN201954964U CN 201954964 U CN201954964 U CN 201954964U CN 2010206798652 U CN2010206798652 U CN 2010206798652U CN 201020679865 U CN201020679865 U CN 201020679865U CN 201954964 U CN201954964 U CN 201954964U
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Abstract
The utility model discloses a sealing device for a trolley of a sintering annular cooler. The sealing device comprises dynamic seal plates and static seal plates, wherein one end of each dynamic seal plate is fixed through a pin shaft; the other end of each dynamic seal plate is hung in the air and can perform rotating motion by taking the pin shaft as the axis; each dynamic seal plate is in contact fit with each static seal plate; and a heat-resisting spring is arranged on the back of each dynamic seal plate. The sealing device has an ingenious structure, so that the dynamic seal plates can freely swing and are closely contacted with the static seal plates under the action of wind pressure and dead weight, the irregular shifting of the trolley is diminished by the free swing of the dynamic seal plates, and continuously-contacted sliding seal is realized; and the pressure of the dynamic seal plates and the static seal plates can be controlled by the heat-resisting springs; the sealing device can solve the problem of serious air leakage between the trolley and an air room at the lower part as well as a smoke hood at the upper part, and the problems that the service life of a sealing piece between the trolley and the air room at the lower part as well as the smoke hood at the upper part is short and the overhaul of the sealing piece is difficult, so as to improve the flue gas circulation utilization ratio, enhance the flue gas temperature, greatly improve the generated electrical energy, realize the efficient utilization of the waste heat in the annular cooler, and facilitate popularization and application.
Description
Technical field
The utility model relates to a kind of sealing device, is specifically related to a kind of sealing device that is used for the sintering ring cold machine trolley that iron and steel enterprise seals sintering ring cold machine trolley and bottom air compartment, sintering ring cold machine trolley and top petticoat pipe respectively.
Background technology
At present, in steel manufacture process, the energy consumption of sintering circuit accounts for 10% of total energy consumption, is only second to the ironmaking operation, occupies second.Whether in the sintering circuit total energy consumption, sintering device flue gas and central cooler waste gas have nearly 50% heat energy, utilize the technology of this part heat energy producing steam in next life and generating to make rapid progress at present, but can efficiently utilize this part heat energy to depend on the sealing situation of central cooler.
Usually the sealing of sintering circular-cooler is that resistant to elevated temperatures rubber slab is fixedly mounted on the top and the bottom or air compartment petticoat pipe of chassis, by sliding between rubber slab and steel plate or the rubber slab, comes the gap at chassis and air compartment and petticoat pipe place is sealed.But be about 750～850 degree owing to just entered the temperature of central cooler sintering deposit, and in order to improve the recycling rate of flue gas, improve the temperature of flue gas, make the air compartment temperature also reach 130 degree, even higher, this just causes the damage of the rubber gasket sheet at air compartment and petticoat pipe place.Rubber slab rate of decay especially for the sealing of petticoat pipe place faster (even firing accident takes place), perform practically no function, and be the import of the hot flue gas of waste heat boiler herein, be negative pressuren zone, this just causes a large amount of cold wind directly to enter waste heat boiler, the steam quality that this will have a strong impact on boiler influences the whole generating system; And the rubber slab of air compartment place sealing is because chassis play up and down at the volley, and under the flue gas effect of high temperature, cause the rubber gasket sheet abrasion deformation serious, sealing is relatively poor, and this defective causes making the air leak rate of air curtain of central cooler to reach 30%～40%, even higher, this not only significantly reduces the recycling rate of flue gas, reduce the circulating flue gas temperature, influenced generated energy, and significantly increased the load of circulating fan.To these defect processing also unusual difficulty, must etc. sintering circuit the stopping production of long period is arranged, just can carry out local overhauling.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of problem of leaking out in a large number that can solve between above-mentioned chassis and bottom air compartment and the top petticoat pipe, solve the problem of sealing plate maintenance difficulty between above-mentioned chassis and bottom air compartment and the top petticoat pipe, thereby improve the temperature of flue gas recirculation utilization rate, raising flue gas, accomplish the seal on-bne repair, realize the efficient sealing device that utilizes the sintering ring cold machine trolley of the cold waste heat of ring.
Technical scheme: for solving the problems of the technologies described above, the sealing device of sintering ring cold machine trolley of the present utility model, comprise movable sealing plate and static seal plate, described movable sealing plate one end is fixed (also can be fixing by hinge etc.) by bearing pin, the movable sealing plate other end is unsettled and can rotate as axis with bearing pin (or hinge etc.), the movable sealing plate contacts cooperation with the static seal plate, and movable sealing backboard face is provided with heat-resisting spring, and an end of heat-resisting spring is provided with spring adjusting part.
In the utility model, the movable sealing plate can freely swing, and under the effect of blast and deadweight, is adjacent to the static seal plate, chassis in all the freely swinging of passive sealing plate and absorbing of the play of all directions, realize the Continuous Contact sliding sealing.In addition, when sealing in the gap to chassis and lower air chamber, the movable sealing plate that is fixed on the chassis bottom is under deadweight and blast effect, with the sliding-contact of air compartment static seal plate, along with the friction time is elongated, contact-making surface will improve sealing effectiveness by line contact the becoming face contact of beginning; When the gap to chassis and petticoat pipe seals, be fixed on the petticoat pipe the movable sealing plate the deadweight and the blast effect under, with the static seal plate sliding-contact on chassis top, along with the friction time is elongated, contact-making surface will improve sealing effectiveness by line contact the becoming face contact of beginning.
Specifically, one side being made as of described movable sealing plate is L shaped, a movable sealing plate can cover another adjacent piece movable sealing plate.That is, when the movable sealing plate was installed on the plate of railway carriage or compartment, chassis bottom, the limit that the movable sealing plate is identical with the trolley movement direction was made as L shaped, is used to push down last block of movable sealing plate; When the movable sealing plate was installed on the petticoat pipe, the limit that the movable sealing plate is opposite with the trolley movement direction was made as L shaped, was used to push down a back movable sealing plate, guaranteed sealing effectiveness.
As preferably, described movable sealing plate and static seal plate are for adopting steel or castiron movable sealing plate and static seal plate, make wearability, heat-resisting quantity improve greatly, and along with the wearing and tearing of movable sealing plate and static seal plate, the line that movable sealing plate and static seal plate are begun contacts and becomes the face contact, further improves sealing effectiveness.
When the utility model seals sintering ring cold machine trolley and top petticoat pipe, spring adjusting part one end and movable sealing plate one end are installed on the petticoat pipe respectively, described static seal plate is located on the plate of railway carriage or compartment, chassis top, and described movable sealing plate contacts cooperation with the static seal plate at petticoat pipe and chassis outside.The movable sealing plate absorbs the up and down play of chassis in motion process by freely rotating as axially carrying out with the trolley movement direction, tightly contacts when the movable sealing plate is slided with the static seal plate, forms the sealing of Continuous Contact formula.
Described heat-resisting spring and spring adjusting part one are used from the pressure between control movable sealing plate and the chassis top static seal plate, have both guaranteed sealing effectiveness, guarantee the safe operation of chassis again; Described movable sealing plate is installed on the supporting base, supporting base is installed on the petticoat pipe by securing member (for example securing member such as bolt), be equipped with the oval slotted hole that cooperates with securing member on described supporting base and the petticoat pipe, be used to adjust the clearance control between the movable sealing plate, and help the maintenance dismounting of sealing plate.
Be lubricated with high temperature resistant lubricating grease between described movable sealing plate and the static seal plate, the heat resisting temperature of this high temperature resistant lubricating grease is at least 350 ℃, and this high temperature resistant lubricating grease is elected Kai Dun as usually, i.e. the CaidonGP600 Hmp grease.When the movable sealing plate of petticoat pipe contacted with chassis top static seal plate, through sliding friction after a while, when sealing was tight, available high temperature resistant lubricating grease was lubricated, and improved sealing, reduced frictional force.
When the utility model seals sintering ring cold machine trolley and bottom air compartment, described spring adjusting part one end and movable sealing plate one end are installed in respectively on the plate of railway carriage or compartment, chassis bottom, described static seal plate is located on the air compartment, the downward foremost smooth curved of this static seal plate guarantees that the movable sealing plate of chassis bottom contacts with the level and smooth of this static seal plate.
Described heat-resisting spring and spring adjusting part one are used from the pressure between the static seal plate of controlling on movable sealing plate and the chassis bottom air compartment, have both guaranteed sealing effectiveness, guarantee the safe operation of chassis again; Described movable sealing plate is installed on the supporting base, supporting base is installed on the plate of railway carriage or compartment, chassis bottom by securing member (for example securing member such as bolt), be equipped with the oval slotted hole that cooperates with securing member on described supporting base and railway carriage or compartment, the chassis bottom plate, be used to adjust the clearance control between the movable sealing plate, and help the maintenance dismounting of sealing plate.
Be lubricated with high temperature resistant lubricating grease between described movable sealing plate and the static seal plate, the heat resisting temperature of this high temperature resistant lubricating grease is at least 250 ℃, and this high temperature resistant lubricating grease is elected BDCom as usually, i.e. 6002 Hmp greases.When the movable sealing plate of chassis bottom contacted with air compartment static seal plate, through friction after a while, when sealing was tight, available high temperature resistant lubricating grease was lubricated, and improved sealing, reduced frictional force.
The static seal plate on the air compartment and the static seal plate on chassis top adopt steel plate (thickness should be 8 millimeters usually), field fabrication is installed, but should notice that quiet close plate and the contacted face of movable sealing plate can not have rough weld seam, if any, behind the then necessary full weld, polish with abrasive machine.
Beneficial effect: the sealing device of sintering ring cold machine trolley of the present utility model compared with prior art has the following advantages:
1) the movable sealing plate can freely swing, and under the effect of blast and deadweight, is adjacent to the static seal plate, chassis in all the freely swinging of passive sealing plate and absorbing of the play of all directions, realize the Continuous Contact sliding sealing;
2) bolt hole of supporting base adopts oval slotted hole, makes flimsy movable sealing plate onlinely overhaul and to change, and reduces former seal maintenance difficulty greatly;
3) the making material of movable sealing plate and static seal plate is owing to adopt steel or cast iron, make wearability, heat-resisting quantity improve greatly, and along with the wearing and tearing of static and dynamic sealing plate, the line that movable sealing plate and static seal plate are begun contacts and becomes the face contact, further improves sealing effectiveness.
In a word, the sealing device of sintering ring cold machine trolley of the present utility model, do not influencing under the cold technological process situation of former sintered ring, can absorb the play of all directions of central cooler generation in service, realize the hermetically-sealed construction form of sealing fully between chassis and bottom air compartment and the top petticoat pipe, and the life-span of seal is significantly prolonged; Simultaneously, can reduce station service power consumption rate greatly, guarantee the quality of flue gas, make whole afterheat generating system stable and high effective operation.
Description of drawings
Fig. 1 structural representation that to be the utility model seal sintering ring cold machine trolley and bottom air compartment;
Fig. 2 is the A--A view of Fig. 1;
Fig. 3 structural representation that to be the utility model seal sintering ring cold machine trolley and top petticoat pipe;
Fig. 4 is the B-B view of Fig. 3;
Fig. 5 is the overall structure schematic diagram that the utility model applies to the sintering ring cold machine trolley sealing.
1, railway carriage or compartment, chassis bottom plate 2, chassis bottom movable sealing plate fastener 3, chassis bottom movable sealing plate supporting base 4, chassis bottom movable sealing plate 5, air compartment static seal plate 6, air compartment 7, spring adjusting part 11, petticoat pipe 10, chassis 9, heat-resisting spring 8, the oval slotted hole 22 of chassis movable sealing plate supporting base, petticoat pipe movable sealing plate supporting base securing member 33, petticoat pipe movable sealing plate supporting base 44, petticoat pipe movable sealing plate 55, chassis top static seal plate 77, second spring adjusting part 88, the oval slotted hole 99 of petticoat pipe movable sealing plate supporting base, the second heat-resisting spring.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further explanation.
As depicted in figs. 1 and 2, the sealing device of sintering ring cold machine trolley of the present utility model, mainly comprise chassis bottom movable sealing plate 4, chassis bottom movable sealing plate supporting base 3, chassis bottom movable sealing plate fastener 2, air compartment static seal plate 5, movable sealing plate 4 in chassis bottom is fixed on chassis bottom movable sealing plate supporting base 3 by bearing pin or hinges fixing, chassis bottom movable sealing plate 4 other ends are unsettled and can rotate as axis with bearing pin or hinge, with securing member 2 chassis bottom movable sealing plate supporting base 3 is fixed on railway carriage or compartment, the chassis bottom plate 1 again, air compartment static seal plate 5 is fixed on the air compartment, the downward foremost smooth curved of air compartment static seal plate 5, guarantee level and smooth contact of dynamic seal 4 with the air compartment static seal plate 5 of chassis bottom, realize chassis 10 and bottom air compartment are sealed with chassis 10 inner contacts at air compartment 6 with air compartment static seal plate 5 by movable sealing plate 4, one end of heat-resisting spring 9 links to each other with movable sealing plate 4, the other end links to each other with spring adjusting part 7, spring adjusting part 7 other ends are fixed on railway carriage or compartment, the chassis bottom plate 1, match with spring adjusting part 7 by heat-resisting spring 9, control the pressure between chassis bottom movable sealing plate 4 and the air compartment static seal plate 5, both guarantee sealing effectiveness, guaranteed the safe operation of chassis 10 again.
As shown in Figure 3 and Figure 4, the sealing device of sintering ring cold machine trolley of the present utility model, mainly comprise petticoat pipe movable sealing plate 44, petticoat pipe movable sealing supporting base 33, petticoat pipe movable sealing supporting member set bolt 22 and chassis top static seal plate 55, petticoat pipe movable sealing plate 44 1 ends are installed on the petticoat pipe movable sealing plate supporting base 33 by bearing pin or hinge, petticoat pipe movable sealing plate 44 other ends are unsettled and can rotate as axis with bearing pin or hinge, with securing member 22 petticoat pipe movable sealing plate supporting base 33 is fixed on the petticoat pipe 11 again, chassis top static seal plate 55 is fixed on the chassis 10, realize chassis 10 and petticoat pipe 11 are sealed with chassis 10 outside contacts at petticoat pipe 11 with chassis top static seal plate 55 by petticoat pipe movable sealing plate 44, one end of heat-resisting spring 99 links to each other with movable sealing plate 44, the other end links to each other with second spring adjusting part 77, second spring adjusting part, 77 other ends are fixed on the petticoat pipe 11, match with second spring adjusting part 77 by the second heat-resisting spring 99, control the pressure between moving confidential paper 44 and the chassis top static seal plate 55, both guarantee sealing effectiveness, guaranteed the safe operation of chassis 10 again.
Air compartment static seal plate 5 and chassis top static seal plate 55 adopt steel plate (thickness should be more than 8 millimeters usually), field fabrication is installed, but should notice that quiet close plate and the contacted face of movable sealing plate can not have rough weld seam, if any, behind the then necessary full weld, polish with abrasive machine.
Chassis bottom movable sealing plate 4, chassis bottom movable sealing plate supporting base 3, petticoat pipe movable sealing plate 44 and petticoat pipe movable sealing supporting base 33 can be made by Foundry Works, and carry out simple machined and finish.The bearing pin of movable sealing plate and the bore clearance of supporting base should be controlled at 1～2 millimeter, are convenient to rotate and install; The movable sealing plate position that contacts with quiet close plate should be done wedgewise the movable sealing plate is contacted with static seal plate formation face; Make on chassis bottom movable sealing plate 4 one side identical with chassis 10 directions of motion L shaped, one side petticoat pipe movable sealing plate 44 opposite with chassis 10 directions of motion make L shapedly, be used to cover next piece movable sealing plate, improve sealing effectiveness.
Chassis bottom movable sealing plate 4 and chassis bottom movable sealing plate supporting base 3, be installed on railway carriage or compartment, the chassis bottom plate 1 by securing member 2, by the oval slotted hole 8 of chassis movable sealing plate supporting base, with the clearance control between the adjacent chassis bottom movable sealing plate 4 in 2 millimeters, with the clearance control of the basal plane of movable sealing plate bearing pin and supporting base at 4～5 millimeters, be convenient to that the movable sealing plate rotates and dismounting, available herein high temperature resistant and have certain lubricity Graphite pad (thickness is 3～4 millimeters) to seal.
Petticoat pipe movable sealing plate 44 and petticoat pipe movable sealing plate supporting base 33, be installed on the petticoat pipe 7 by securing member, by the oval slotted hole 88 of petticoat pipe movable sealing plate supporting base, with the clearance control between the adjacent petticoat pipe movable sealing plate 44 in 2 millimeters, the clearance control of the basal plane of movable sealing plate bearing pin and supporting base at 4～5 millimeters, is convenient to the movable sealing plate and is rotated and dismounting.
When movable sealing plate and supporting base are installed, must insert between the axis hole and movable sealing plate and fixed head of supporting base with resistant to elevated temperatures lubricating grease, play sealing and lubrication.
When the utility model seals sintering ring cold machine trolley and top petticoat pipe, be lubricated by high temperature resistant lubricating grease between petticoat pipe movable sealing plate 44 and the chassis top static seal plate 55, the heat resisting temperature of this high temperature resistant lubricating grease is at least 350 ℃, usually this high temperature resistant lubricating grease is elected Kai Dun as, be that this high temperature resistant lubricating grease of CaidonGP600 is elected BDCom as, i.e. 6002 Hmp greases, when petticoat pipe movable sealing plate 44 contacts with chassis top static seal plate 55, through sliding friction after a while, when sealing is tight, available high temperature resistant lubricating grease is lubricated, and improves sealing, reduces frictional force; When the utility model seals sintering ring cold machine trolley and bottom air compartment, be lubricated by high temperature resistant lubricating grease between chassis bottom movable sealing plate 4 and the air compartment static seal plate 5, the heat resisting temperature of this high temperature resistant lubricating grease is at least 250 ℃, usually this high temperature resistant lubricating grease is elected BDCom as, i.e. 6002 Hmp greases, when chassis bottom movable sealing plate 4 contacts with air compartment static seal plate 5, through friction after a while, when sealing is tight, available high temperature resistant lubricating grease is lubricated, improve sealing, reduce frictional force.
Above content is combined, be the overall structure schematic diagram that the utility model applies to the sintering ring cold machine trolley sealing, as shown in Figure 5.
The above only is a preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. the sealing device of a sintering ring cold machine trolley, it is characterized in that: comprise movable sealing plate and static seal plate, described movable sealing plate one end is fixed by bearing pin, the movable sealing plate other end is unsettled and can rotate as axis with bearing pin, the movable sealing plate contacts cooperation with the static seal plate, movable sealing backboard face is provided with heat-resisting spring, and heat-resisting spring one end is provided with spring adjusting part.
2. the sealing device of sintering ring cold machine trolley according to claim 1, it is characterized in that: one side being made as of described movable sealing plate is L shaped, a movable sealing plate can cover another adjacent piece movable sealing plate.
3. the sealing device of sintering ring cold machine trolley according to claim 2 is characterized in that: described movable sealing plate and static seal plate are for adopting steel or castiron movable sealing plate and static seal plate.
4. according to the sealing device of each described sintering ring cold machine trolley of claim 1 to 3, it is characterized in that: described spring adjusting part one end and movable sealing plate one end are installed on the petticoat pipe respectively, described static seal plate is located on the plate of railway carriage or compartment, chassis top, and described movable sealing plate contacts cooperation with the static seal plate at petticoat pipe and chassis outside.
5. the sealing device of sintering ring cold machine trolley according to claim 4, it is characterized in that: described movable sealing plate is installed on the supporting base, supporting base is installed on the petticoat pipe by securing member, is equipped with the oval slotted hole that cooperates with securing member on described supporting base and the petticoat pipe.
6. the sealing device of sintering ring cold machine trolley according to claim 5, it is characterized in that: be lubricated with high temperature resistant lubricating grease between described movable sealing plate and the static seal plate, the heat resisting temperature of this high temperature resistant lubricating grease is at least 350 ℃.
7. according to the sealing device of each described sintering ring cold machine trolley of claim 1 to 3, it is characterized in that: described spring adjusting part one end and movable sealing plate one end are installed in respectively on the plate of railway carriage or compartment, chassis bottom, described static seal plate is located on the air compartment, being bent downwardly foremost of this static seal plate, described movable sealing plate contacts cooperation at air compartment with the chassis bottom with the static seal plate.
8. the sealing device of sintering ring cold machine trolley according to claim 7, it is characterized in that: described movable sealing plate is installed on the supporting base, supporting base is installed on the plate of railway carriage or compartment, chassis bottom by securing member, is equipped with the oval slotted hole that cooperates with securing member on described supporting base and railway carriage or compartment, the chassis bottom plate.
9. the sealing device of sintering ring cold machine trolley according to claim 8, it is characterized in that: be lubricated with high temperature resistant lubricating grease between described movable sealing plate and the static seal plate, the heat resisting temperature of this high temperature resistant lubricating grease is at least 250 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206798652U CN201954964U (en) | 2010-12-24 | 2010-12-24 | Sealing device for trolley of sintering annular cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206798652U CN201954964U (en) | 2010-12-24 | 2010-12-24 | Sealing device for trolley of sintering annular cooler |
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| CN201954964U true CN201954964U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206798652U Expired - Fee Related CN201954964U (en) | 2010-12-24 | 2010-12-24 | Sealing device for trolley of sintering annular cooler |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032785A (en) * | 2010-12-24 | 2011-04-27 | 孙慕文 | Sealing device for trolley of sintering circular cooler |
| CN102937186A (en) * | 2012-12-01 | 2013-02-20 | 新余钢铁集团有限公司 | Dynamic sealing device for sintered ring cooling machine trolley |
| CN103047869A (en) * | 2013-02-01 | 2013-04-17 | 吴�琳 | Three-dimensional limiting type elastic sealing device of lower breast board of circular cooler trolley |
| CN103175399A (en) * | 2011-12-23 | 2013-06-26 | 中冶长天国际工程有限责任公司 | Sintering machine trolley flue gas cover sealing device based on sintering flue gas desulfuration system |
| CN104864712A (en) * | 2015-06-09 | 2015-08-26 | 马春强 | Sintering machine trolley first-grade water sealing heat transpiration protection shield device |
| CN109612281A (en) * | 2016-11-29 | 2019-04-12 | 安徽工业大学 | A kind of sinter cooler |
-
2010
- 2010-12-24 CN CN2010206798652U patent/CN201954964U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032785A (en) * | 2010-12-24 | 2011-04-27 | 孙慕文 | Sealing device for trolley of sintering circular cooler |
| CN102032785B (en) * | 2010-12-24 | 2013-08-07 | 孙慕文 | Sealing device for trolley of sintering circular cooler |
| CN103175399A (en) * | 2011-12-23 | 2013-06-26 | 中冶长天国际工程有限责任公司 | Sintering machine trolley flue gas cover sealing device based on sintering flue gas desulfuration system |
| CN103175399B (en) * | 2011-12-23 | 2014-12-17 | 中冶长天国际工程有限责任公司 | Sintering machine trolley flue gas cover sealing device based on sintering flue gas desulfuration system |
| CN102937186A (en) * | 2012-12-01 | 2013-02-20 | 新余钢铁集团有限公司 | Dynamic sealing device for sintered ring cooling machine trolley |
| CN102937186B (en) * | 2012-12-01 | 2015-11-11 | 新余钢铁集团有限公司 | A kind of sintering ring cold machine trolley dynamic seal apparatus |
| CN103047869A (en) * | 2013-02-01 | 2013-04-17 | 吴�琳 | Three-dimensional limiting type elastic sealing device of lower breast board of circular cooler trolley |
| CN104864712A (en) * | 2015-06-09 | 2015-08-26 | 马春强 | Sintering machine trolley first-grade water sealing heat transpiration protection shield device |
| CN109612281A (en) * | 2016-11-29 | 2019-04-12 | 安徽工业大学 | A kind of sinter cooler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20131224 |