CN102865581B - Synchronous driving device for mechanical fire grate of fire grate type solid waste incinerator - Google Patents
Synchronous driving device for mechanical fire grate of fire grate type solid waste incinerator Download PDFInfo
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- CN102865581B CN102865581B CN201210372132.8A CN201210372132A CN102865581B CN 102865581 B CN102865581 B CN 102865581B CN 201210372132 A CN201210372132 A CN 201210372132A CN 102865581 B CN102865581 B CN 102865581B
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Abstract
The invention discloses a synchronous driving device for a mechanical fire grate of a fire grate type solid waste incinerator. The device consists of a hydraulic cylinder, a position detection switch, a solenoid valve group, a hydraulic pipe and a controller such as a programmable logic controller (PLC) or a distributed control system (DCS) for controlling the hydraulic cylinder to act, wherein the solenoid valve group comprises a stop valve, a throttling valve, a three-station four-way electromagnetic directional valve, a pressure regulating valve, a two-station four-way electromagnetic directional valve and a pressure measuring joint. According to the device, the driving beams on two sides of the fire grate can be pushed to synchronously move forwards and backwards, so that a movable fire grate part of the mechanical fire grate is balanced in stress and stable in motion, the wear brought by asynchronous operation is reduced, and the service life is prolonged.
Description
Technical field
The present invention relates to field of household garbage incineration, particularly a kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration.
Background technology
The stoker fired grate of current grate-type domestic waste incineration is all made up of fire grate block that is in column or that be arranged in line and drive unit thereof, in column or the moving grate block of embarking on journey and fixed grate block are alternately arranged, the rubbish promoted on fire grate by the continuous reciprocating action of moving grate is progressively vacillated dynamic downwards.For the fire grate be arranged in line, the travelling oven stringer of every section of fire grate is all fixed on the driving beam of both sides, by promote drive beam move back and forth the reciprocating action realizing moving grate block.Two push rods promoting to drive beam to reciprocatingly move need synchronous promotion, moving grate partial straight lines just can be made to advance, if the displacement of two push rods is asynchronous, moving grate part will be advanced at a slant, greatly can increase the wearing and tearing of fire grate like this, reduce its service life.
For solving the displacement synchronous problem of push rod, a lot of equipment manufacturer have employed mechanical synchronization mode, and be exactly two same driving shafts of Hydraulic Cylinder, two push rods are installed at these driving shaft two ends, drive beam for synchronously promoting moving grate, scheme as depicted in figs. 1 and 2.Two hydraulic cylinders 3 are connected with magnetic valve group 13 respectively and are parallel, these two hydraulic cylinders 3 promote same driving shaft 14 jointly, two push rods 15 are installed at driving shaft 14 two ends, drive beam 2 for synchronously promoting moving grate, and then synchronous promotion moving grate crossbeam 1.Carry out position detection by setting position detecting unit 5 and 6, position is detected data and pass to controller 16, the break-make of three-position four-way electromagnetic directional valve 10 oil circuit control of controller 16 accordingly in electromagnetic valve for adjusting group 13.Though this scheme can solve the problem that both sides moving grate drives beam synchronous better, but because driving shaft 14 is around axis rotation, it is by the bent push rod 15 than promoting moving grate driving beam 2, the movement locus of such push rod 15 is not straight line, but a face, the easy like this furnace wall that causes seals bad problem.The seal 18 be arranged on furnace wall 17 is mainly used to the air compartment below fire grate and outside atmosphere are completely cut off, and prevents the combustion air of high temperature from leaking outside.All there is the shortcoming that seal is difficult to carry out sealing in the project of the above-mentioned synchronization scenario of a lot of employing, and seal easily damages, and causes high temperature combustion air to reveal, and not only damage equipment also can threaten to personal safety.
Summary of the invention
The defect of furnace wall sealing problem can not be solved when solving the displacement synchronous problem of push rod in order to overcome prior art, the invention provides a kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration, it is ensureing the problem also solving furnace wall sealing while both sides moving grate drives beam synchronous, the sealing effectiveness reached.
Technical scheme of the present invention is as follows:
A kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration, be connected with the moving grate block of domestic waste incineration, comprise magnetic valve group, position detecting switch, controller, hydraulic cylinder and moving grate block propulsive mechanism, described magnetic valve group is connected with described controller respectively with position detecting switch, described controller is controlled described magnetic valve group by the signal detecting position detecting switch transmission, described hydraulic cylinder is connected respectively with described magnetic valve group and described moving grate block propulsive mechanism, described moving grate block propulsive mechanism arranges two groups, and be separately positioned on the both sides of described moving grate block,
Described hydraulic cylinder arranges two, and the oil circuit of described two hydraulic cylinders adopts series system to connect;
Described each hydraulic cylinder is connected with one group of moving grate block propulsive mechanism, and between described hydraulic cylinder and moving grate block propulsive mechanism, the transmission of power point-blank.
Preferably, described moving grate block comprises moving grate crossbeam, and described moving grate block propulsive mechanism of often organizing comprises the moving grate driving beam and driving beam push rod that are connected to each other, and described moving grate drives beam to be connected with moving grate crossbeam;
Described each hydraulic cylinder is equipped with hydraulic cylinder push rod, and described hydraulic cylinder push rod, driving beam push rod, moving grate drive beam to connect successively, and described hydraulic cylinder push rod, driving beam push rod, moving grate drive the transmission of power between beam point-blank.
Preferably, described hydraulic cylinder push rod and driving beam push rod, described driving beam push rod and moving grate drive between beam and all connect with hinging manner.
Preferably, described position detecting switch comprises position position detecting switch after fire grate anteposition position detecting switch and fire grate, detects respectively and arranges front position and the back-end location of fire grate, the stroke of adjustment fire grate.
Preferably, described magnetic valve group comprises a three-position four-way electromagnetic directional valve and two four-way electromagnetic reversing valves, the advance of three position control fire grates of described three-position four-way electromagnetic directional valve, retrogressing and stopping, described controller is connected with described three-position four-way electromagnetic directional valve and described two four-way electromagnetic reversing valves respectively, and by the control realization of these two solenoid directional control valves to the motion control of fire grate.
Preferably, described two four-way electromagnetic reversing valves are connected the entry/exit oil oil circuit of two hydraulic cylinders, and the moving grate of reset both sides drives beam to get back to initial back-end location.
Preferably, when the moving grate of described two four-way electromagnetic reversing valve reset both sides drives beam to get back to initial back-end location, first stopping about 1 second time on right side returns leftward position.
Preferably, be connected by oil line pipe between described hydraulic cylinder with magnetic valve group, between the inner each valve of described magnetic valve group.
Preferably, described magnetic valve group also comprises stop valve, choke valve, pressure-regulating valve and pressure measuring tie-in, described stop valve and choke valve are arranged between described magnetic valve group oil-in and described three-position four-way electromagnetic directional valve, described pressure-regulating valve is arranged between described three-position four-way electromagnetic directional valve and described hydraulic cylinder, and described pressure measuring tie-in is arranged on the oil line pipe that is connected with described hydraulic cylinder.
Preferably, described hydraulic cylinder is hydraulic cylinder with double piston rods, and described two hydraulic cylinder with double piston rods specifications are identical.
Preferably, described controller is PLC or DCS cyclelog.
Preferably, also comprise furnace wall, seal and fixed support, described hydraulic cylinder is fixed on furnace wall by fixed support, and the push rod of described hydraulic cylinder is connected with furnace wall by seal.
Compared with prior art, beneficial effect of the present invention is as follows:
One, the present invention, by the design to magnetic valve group, realizes two hydraulic cylinder series systems, solves the stationary problem of stoker fired grate drive unit;
2nd, the present invention is by driving the transmission design of power between beam point-blank by hydraulic cylinder push rod, driving beam push rod, moving grate, particular by hydraulic cylinder push rod and drive beam push rod, the transmission that drives beam push rod and moving grate to drive the chain connection mode between beam to exert all one's strength point-blank, solve the problem of furnace wall sealing.
The moving grate that device of the present invention can promote fire grate both sides drives beam advanced in unison and retrogressing, makes the moving grate part stress balance of stoker fired grate, stable movement, decreases the asynchronous wearing and tearing brought, improve service life.
Certainly, implement arbitrary product of the present invention might not need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
Fig. 1 is the synchronous drive device structural representation of stoker fired grate in prior art;
Fig. 2 is the structural representation of the moving grate block propulsive mechanism of stoker fired grate in prior art;
Fig. 3 is the structural representation of the synchronous drive device of embodiment of the present invention stoker fired grate;
Fig. 4 is the structural representation of the moving grate block propulsive mechanism of embodiment of the present invention stoker fired grate.
Detailed description of the invention
The invention provides a kind of synchronous drive device of stoker fired grate of grate-type domestic waste incineration, it adopts the mode that is arranged in series by hydraulic cylinder to solve the displacement synchronous problem driving beam push rod by carrying out magnetic valve group designing, and by being the sealing problem that strength transmission solves furnace wall seal point-blank by hydraulic cylinder push rod and driving beam putter design.
Below with the drawings and specific embodiments, the present invention will be further described.In following examples, and describe mark identical in the figure of prior art in background technology and represent same or analogous element.
Embodiment
See Fig. 3, the synchronous drive device of the stoker fired grate of the grate-type domestic waste incineration of the present embodiment, be connected with the moving grate block of domestic waste incineration, comprise magnetic valve group 13, position detecting switch 5 and 6(are respectively position position detecting switch 6 after fire grate anteposition position detecting switch 5 and fire grate), controller 16, hydraulic cylinder 3 and moving grate block propulsive mechanism, magnetic valve group 13 is connected with controller 16 with 6 respectively with position detecting switch 5, controller 16 is controlled magnetic valve group 13 by the signal detecting position detecting switch 5 and 6 transmission, hydraulic cylinder 3 is connected respectively with magnetic valve group 13 and moving grate block propulsive mechanism, moving grate block propulsive mechanism arranges two groups, and be separately positioned on the both sides of moving grate block, hydraulic cylinder 3 arranges two, and the oil circuit of two hydraulic cylinders 3 adopts series system to connect, each hydraulic cylinder is connected with one group of moving grate block propulsive mechanism, and between hydraulic cylinder 3 and moving grate block propulsive mechanism the transmission of power is point-blank.After fire grate anteposition position detecting switch 5 and fire grate, position position detecting switch 6 detects and arranges front position and the back-end location of fire grate, the stroke of adjustment fire grate.
In the present embodiment, the hydraulic circuit of two hydraulic cylinders 3 adopts the mode of series connection to connect as shown in Figure 3, the hydraulic cylinder with double piston rods that two hydraulic cylinders 3 adopt specification identical, when moving, each hydraulic cylinder oil inlet enters how much hydraulic oil like this, oil-out just goes out how much oil, the hydraulic oil that hydraulic cylinder goes out all enters into again inside another hydraulic cylinder, promotion piston moves, because the specification of two hydraulic cylinders is identical, so the displacement of two hydraulic cylinder movements is identical, the moving grate of fire grate both sides can be driven to drive beam synchronizing moving.
In the present embodiment, controller 16 can be PLC or DCS cyclelog, specifically selects PLC cyclelog in the present embodiment, and in the present invention, other also can select DCS cyclelog in implementing.
In the present embodiment, moving grate block comprises moving grate crossbeam 1, moving grate block propulsive mechanism comprises the moving grate be connected to each other and drives beam 2 and drive beam push rod 15, moving grate drives beam 2 to be connected with moving grate crossbeam 1, be specially, moving grate is set respectively in the both sides of moving grate crossbeam 1 and drives beam 2, and the moving grate that moving grate crossbeam 1 is fixed on its both sides drives on beam 2; Moving grate drives beam 2 to comprise two location status, is respectively anteposition position and position, rear position.
See Fig. 4, each hydraulic cylinder 3 is equipped with hydraulic cylinder push rod 31, often organize hydraulic cylinder push rod 31, drive beam push rod 15, moving grate drives beam 2 to connect successively, and between them the transmission of power is point-blank, specifically in the present embodiment, by hydraulic cylinder push rod 31 and driving beam push rod 15, beam push rod 15 and moving grate is driven to drive beam 2 to be connected with transmitting thrust with hinging manner, chain connection mode ensure that the transmission of power is point-blank, the moving direction of such driving beam push rod 15 drives the moving direction of beam 2 consistent with moving grate, and it is in alignment, be easy to sealing like this, and seal is also not easy to damage.Wherein, hydraulic cylinder 3 is arranged on fixed support 19, and hydraulic cylinder push rod 31 is fixed on furnace wall 17 by seal 18.Be arranged on the air compartment that the seal 18 on furnace wall 17 is mainly used to below isolated fire grate to be communicated with outside atmosphere, prevent the combustion air of high temperature from leaking outside.
In the present embodiment, magnetic valve group 13 comprises a three-position four-way electromagnetic directional valve 10 and two four-way electromagnetic reversing valves 8, the advance of three position control fire grates of three-position four-way electromagnetic directional valve 10, retrogressing and stopping, controller 16 is connected with three-position four-way electromagnetic directional valve 10 and two four-way electromagnetic reversing valves 8 respectively, and by the control realization of these two solenoid directional control valves to the motion control of fire grate.Position detecting switch 5 and 6 delivers to PLC cyclelog the position signalling of fire grate movement, and PLC cyclelog controls the action of three-position four-way electromagnetic directional valve 10 and two four-way electromagnetic reversing valves 8 according to the program of setting, realizes the motion control to fire grate.
Two four-way electromagnetic reversing valves 8 are connected the entry/exit oil oil circuit of two hydraulic cylinders 3, and the driving beam 2 of reset both sides gets back to initial position, rear position.
Be connected by oil line pipe 4 between hydraulic cylinder 3 with magnetic valve group 13, between the inner each valve of magnetic valve group 13.In the present embodiment, asphalt channel 4 is hydraulic tube.
In the present embodiment, magnetic valve group 13 also comprises stop valve 12, choke valve 11, pressure-regulating valve 9 and pressure measuring tie-in 7, wherein choke valve 11 is for regulating translational speed during fire grate action, pressure-regulating valve 9 is for regulating the stationarity of fire grate backward movement, stop valve 12 and choke valve 11 are arranged between magnetic valve group oil-in and three-position four-way electromagnetic directional valve 10, pressure-regulating valve 9 is arranged between three-position four-way electromagnetic directional valve 10 and hydraulic cylinder 3, pressure measuring tie-in 7 is arranged on the oil line pipe that is connected with hydraulic cylinder 3, specifically see Fig. 3.
Device of the present invention in use, configures hydraulic cylinder, position detecting switch, magnetic valve group, PLC first as shown in Figure 3, and completes pipeline connection and electrical connection.During work, hydraulic oil flows into from the P mouth of magnetic valve group 13, and T mouth flows out, and is regulated the uninterrupted of oil-feed by choke valve 11, the translational speed of regulator solution cylinder pressure push rod and then the translational speed of adjustment moving grate.The pressure of return line when fire grate retreats is adjusted by pressure-regulating valve 9, stable action when making retrogressing, because the angle of fire grate movement is angle obliquely, when retreating due to fire grate and above the deadweight of rubbish hydraulic cylinder push rod can be made to be subject to a thrust obliquely.When fire grate stops, three-position four-way electromagnetic directional valve 10 mediates, and oil circuit is obstructed, and fire grate is failure to actuate, when three-position four-way electromagnetic directional valve 10 is in right positions, the P of three-position four-way electromagnetic directional valve 10, A mouth is connected, T, B mouth is connected, hydraulic oil passes through P, A mouth, the back cavity of hydraulic cylinder on the left of the bypass check valve of pressure-regulating valve 9 enters, promote left side hydraulic cylinder push rod to advance, the hydraulic oil of the ante-chamber of this hydraulic cylinder flows out, by the T that two four-way electromagnetic reversing valves 8 are communicated with, B mouth enters the back cavity of right side hydraulic cylinder, the push rod simultaneously also promoting right side hydraulic cylinder advances, the hydraulic oil of right side hydraulic cylinder ante-chamber passes through the T of three-position four-way electromagnetic directional valve 10, B mouth flows out, enter return line.When the anteposition position detecting switch 5 of fire grate detects that fire grate moves to front position, PLC can control three-position four-way electromagnetic directional valve 10 according to the signal that puts in place detected and move to centre position, and during cut-out oil circuit, fire grate halts.When fire grate retreats, PLC can control three-position four-way electromagnetic directional valve 10 and move to leftward position, the P of three-position four-way electromagnetic directional valve 10, B mouth is connected, T, A mouth is connected, hydraulic oil passes through P, B mouth, the ante-chamber of right side hydraulic cylinder is entered through pipeline, promote left side hydraulic cylinder push rod rollback, the hydraulic oil of this hydraulic cylinder back cavity flows out, by the B that two four-way electromagnetic reversing valves 8 are communicated with, T mouth enters the ante-chamber of left side hydraulic cylinder, the push rod simultaneously also promoting right side hydraulic cylinder retreats, the hydraulic oil of left side hydraulic cylinder back cavity is by pressure-regulating valve 9, again by the A of three-position four-way electromagnetic directional valve 10, T mouth flows out, enter return line.When the rear position position detecting switch 6 of fire grate detects that fire grate moves to back-end location, PLC can first control two four-way electromagnetic reversing valves 8 according to the signal that puts in place detected and move to right positions, make the P of two four-way electromagnetic reversing valves 8, B mouth is connected, T, A mouth is connected, such hydraulic oil can through the T of two four-way electromagnetic reversing valves 8, A mouth flow to the ante-chamber of left side hydraulic cylinder, the hydraulic oil of right side hydraulic cylinder back cavity can through the P of two four-way electromagnetic reversing valves 8, B mouth enters return line together with the hydraulic oil of left side hydraulic cylinder back cavity, two fire grates are made to return to the most initial back-end location, eliminate may bring in each course of action asynchronous, two four-way electromagnetic reversing valves 8 stop about 1 second time and return leftward position on right side, control three-position four-way electromagnetic directional valve 10 simultaneously and move to centre position, during cut-out oil circuit, fire grate stops.Then prepare to start next actuation cycle.Each actuation cycle of fire grate is completed according to the program preset by PLC cyclelog.
The disclosed preferred embodiment of the present invention just sets forth the present invention for helping above.Preferred embodiment does not have all details of detailed descriptionthe, does not limit the detailed description of the invention that this invention is only described yet.Obviously, according to the content of this description, can make many modifications and variations.This description is chosen and is specifically described these embodiments, is to explain principle of the present invention and practical application better, thus makes art technical staff understand well and to utilize the present invention.The present invention is only subject to the restriction of claims and four corner and equivalent.
Claims (12)
1. the synchronous drive device of the stoker fired grate of a grate-type domestic waste incineration, be connected with the moving grate block of domestic waste incineration, comprise magnetic valve group, position detecting switch, controller, hydraulic cylinder and moving grate block propulsive mechanism, described magnetic valve group is connected with described controller respectively with position detecting switch, described controller is controlled described magnetic valve group by the signal detecting position detecting switch transmission, described hydraulic cylinder is connected respectively with described magnetic valve group and described moving grate block propulsive mechanism, it is characterized in that, described moving grate block propulsive mechanism arranges two groups, and be separately positioned on the both sides of described moving grate block,
Described hydraulic cylinder arranges two, and the oil circuit of described two hydraulic cylinders adopts series system to connect;
Described each hydraulic cylinder is connected with one group of moving grate block propulsive mechanism, and between described hydraulic cylinder and moving grate block propulsive mechanism, the transmission of power point-blank.
2. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 1, it is characterized in that, described moving grate block comprises moving grate crossbeam, described moving grate block propulsive mechanism of often organizing comprises the moving grate driving beam and driving beam push rod that are connected to each other, and described moving grate drives beam to be connected with moving grate crossbeam;
Described each hydraulic cylinder is equipped with hydraulic cylinder push rod, and described hydraulic cylinder push rod, driving beam push rod, moving grate drive beam to connect successively, and described hydraulic cylinder push rod, driving beam push rod, moving grate drive the transmission of power between beam point-blank.
3. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 2, is characterized in that, described hydraulic cylinder push rod and driving beam push rod, described driving beam push rod and moving grate drive between beam and all connect with hinging manner.
4. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 1, it is characterized in that, described position detecting switch comprises position position detecting switch after fire grate anteposition position detecting switch and fire grate, detect respectively and front position and the back-end location of fire grate are set, the stroke of adjustment fire grate.
5. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 4, it is characterized in that, described magnetic valve group comprises a three-position four-way electromagnetic directional valve and two four-way electromagnetic reversing valves, the advance of three position control fire grates of described three-position four-way electromagnetic directional valve, retrogressing and stopping, described controller is connected with described three-position four-way electromagnetic directional valve and described two four-way electromagnetic reversing valves respectively, and by the control realization of these two solenoid directional control valves to the motion control of fire grate.
6. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 5, it is characterized in that, described two four-way electromagnetic reversing valves are connected the entry/exit oil oil circuit of two hydraulic cylinders, and the moving grate of reset both sides drives beam to get back to initial back-end location.
7. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 6, it is characterized in that, when the moving grate of described two four-way electromagnetic reversing valve reset both sides drives beam to get back to initial back-end location, first stopping 1 second time on right side returns leftward position.
8. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 5, is characterized in that, is connected between described hydraulic cylinder with magnetic valve group, between the inner each valve of described magnetic valve group by oil line pipe.
9. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 8, it is characterized in that, described magnetic valve group also comprises stop valve, choke valve, pressure-regulating valve and pressure measuring tie-in, described stop valve and choke valve are arranged between described magnetic valve group oil-in and described three-position four-way electromagnetic directional valve, described pressure-regulating valve is arranged between described three-position four-way electromagnetic directional valve and described hydraulic cylinder, and described pressure measuring tie-in is arranged on the oil line pipe that is connected with described hydraulic cylinder.
10. the synchronous drive device of the stoker fired grate of grate-type domestic waste incineration as claimed in claim 1, it is characterized in that, described hydraulic cylinder is hydraulic cylinder with double piston rods, and described two hydraulic cylinder with double piston rods specifications are identical.
The synchronous drive device of the stoker fired grate of 11. grate-type domestic waste incinerations as claimed in claim 1, it is characterized in that, described controller is PLC or DCS cyclelog.
The synchronous drive device of the stoker fired grate of 12. grate-type domestic waste incinerations as claimed in claim 2, it is characterized in that, also comprise furnace wall, seal and fixed support, described hydraulic cylinder is fixed on furnace wall by fixed support, and the push rod of described hydraulic cylinder is connected with furnace wall by seal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210372132.8A CN102865581B (en) | 2012-09-29 | 2012-09-29 | Synchronous driving device for mechanical fire grate of fire grate type solid waste incinerator |
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| CN201210372132.8A CN102865581B (en) | 2012-09-29 | 2012-09-29 | Synchronous driving device for mechanical fire grate of fire grate type solid waste incinerator |
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| CN102865581B true CN102865581B (en) | 2015-06-24 |
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| CN104456573A (en) * | 2014-12-11 | 2015-03-25 | 杭州新世纪能源环保工程股份有限公司 | Reciprocating type two-section garbage incinerator capable of incinerating garbage with high water content |
| CN107990327A (en) * | 2017-12-16 | 2018-05-04 | 上海康恒环境股份有限公司 | Waste incinerator pusher mechanical synchronization running gear |
| CN109250477A (en) * | 2018-11-23 | 2019-01-22 | 四川川润液压润滑设备有限公司 | A kind of the pusher control system and method for dynamic buffering correction |
| CN110500328A (en) * | 2019-09-12 | 2019-11-26 | 航天南湖电子信息技术股份有限公司 | A kind of light loading cylinders synchronization system for antenna array |
| CN112555209A (en) * | 2020-12-28 | 2021-03-26 | 上海康恒环境股份有限公司 | Electric control device for series-parallel switching of hydraulic oil circuit |
| CN117212798B (en) * | 2023-11-06 | 2024-01-19 | 光大环保技术装备（常州）有限公司 | Fire grate for household garbage incineration and household garbage incineration device |
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Effective date of registration: 20170307 Address after: 200092 room 1402-B2, No. two North Road, Yangpu District, Shanghai, 1121, Zhongshan Patentee after: Shanghai Nanyi Environmental Science & Technology Co., Ltd. Address before: Huaiyin District of Ji'nan City, Shandong province 250021 ten Road No. 239 Patentee before: Lv Qingzhong |