CN112011348A - Emergency stop device and method for searching dropped articles of large crusher during working - Google Patents
Emergency stop device and method for searching dropped articles of large crusher during working Download PDFInfo
- Publication number
- CN112011348A CN112011348A CN202010793512.3A CN202010793512A CN112011348A CN 112011348 A CN112011348 A CN 112011348A CN 202010793512 A CN202010793512 A CN 202010793512A CN 112011348 A CN112011348 A CN 112011348A
- Authority
- CN
- China
- Prior art keywords
- emergency stop
- crusher
- downstream
- stop button
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000003245 coal Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 239000000571 coke Substances 0.000 abstract description 8
- 238000010791 quenching Methods 0.000 abstract description 5
- 230000000171 quenching effect Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 241000251131 Sphyrna Species 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses an emergency stop device for searching dropped articles when a large-scale crusher works, which comprises an operation table arranged in an operation room, wherein the operation table comprises a controller, and the controller is electrically connected with each driving device of the crusher and used for controlling the working state of the crusher; the controller of the operating platform is also electrically connected with an emergency stop button arranged on the operating platform, and the emergency stop button is used for emergently stopping the working state of the first main belt conveyor at the downstream of the crusher in an emergency stop state. Also discloses an emergency stop method. The problem of current industry when handling this kind of problem current practice reliability is extremely poor is solved. The probability that the dropped hammer head and the dropped hammer handle are found before entering the coal tower is greatly improved, blockage and damage to a spiral feeder and a dry quenching rotary sealing valve of a coke oven vehicle are avoided, the production continuity is ensured, and serious damage to equipment is reduced.
Description
Technical Field
The invention relates to the technical field of interlocking control of upstream and downstream belt processes in large-scale bulk material crushing processing and transportation industries, in particular to an emergency stop device and an emergency stop method for searching dropped articles when a large-scale crusher works.
Background
In the coking industry, the mixed coal needs to be crushed and refined before entering the coke oven, so a large-scale crusher needs to be used for crushing the mixed coal. The processing capacity of a single large-scale pulverizer which is widely used at the present stage is generally 500t/h, the rotating speed is 980r/min, and two functions and one standby function are realized during production, namely two large-scale pulverizers run simultaneously and one standby function is realized. According to different requirements on fineness of the mixed coal, the number of matched hammers and hammer cakes of each pulverizer is slightly different, the number of the matched hammers and hammer cakes is generally 58 groups of heavy hammers and hammer cakes, the heavy hammers and the hammer cakes are evenly distributed on a rotor in a cover, and the total weight of each group of hammers and hammer cakes is about 30 kilograms. When the crusher operates, the 10 KV high-voltage motor drives the inner rotor of the cover to rotate at a high speed, and coal and the hammer head are continuously collided and beaten in the cover, so that the purpose of crushing and refining is achieved. Before the coal materials enter the crusher, a coal conveying belt corresponding to the crusher is matched at the upstream of each large crusher, the conveying capacity of the belt conveyor is 500t/h, and the belt speed is 1.6 m/s; the coal materials after being pulverized by the high-speed rotation of the two pulverizers are gathered on a first main belt below a discharge port of the pulverizer, and are sequentially sent to a coal tower through all the main belt procedures at the downstream for being used by a coke oven. The conveying capacity of the downstream main belt conveyor is 1000t/h, and the belt speed is 2.5 m/s.
The single coal used has raw coal which is not washed, so that the mixed coal is often accompanied with large-block-diameter and high-hardness gangue and ironware which are mixed during mining and transportation, when the coal material mixed with the gangue and the ironware passes through a pulverizer, the hammer heads and hammer cakes rotating at high speed can be damaged, and different numbers of hammer heads or hammer cakes can fall off from the rotor and fall onto a main belt below according to different damage degrees.
At present, the current operation method for handling such problems in the industry is that when an employee who attends a post of the crusher judges that a hammer head or a hammer cake falls, the employee contacts a central control room through communication tools such as an interphone and a telephone to stop the operation of a material line of a downstream belt conveyor, and simultaneously, the employee rapidly runs to the tail of the downstream belt conveyor below the crusher from an operation room to pull and stop an accident pull rope. However, the operation method has extremely poor reliability and extremely low probability of finding the falling hammer head and hammer handle, and after a post worker correctly judges an accident, the hammer head or hammer cake enters a coal tower along with a belt system running at a high speed due to various delay defects of waiting, confirming and operation of the operation method, so that the probability of finding the hammer head or hammer cake on a downstream belt is greatly reduced. Finally, the hammer head or the hammer cake can cause blockage, blockage and damage to a coke oven vehicle spiral feeder and a dry quenching rotary sealing valve in the subsequent production operation, so that the continuous production is interrupted and the equipment is seriously damaged. Because the hammer head and the hammer cake are made of alloy materials and are wrapped in a thick coal flow layer after falling to run at high speed, the method for arranging the iron remover on the belt at the lower part of the crusher in the actual production cannot effectively solve the problem.
Disclosure of Invention
The invention aims to provide an emergency stop device and an emergency stop method for searching dropped articles when a large-scale pulverizer works, and solves the problems that continuous production is interrupted and the equipment is seriously damaged due to blockage, blockage and damage caused by dropped heavy hammers and hammer handles to a coke oven vehicle screw feeder and a dry quenching rotary sealing valve in subsequent production operation.
In order to solve the technical problems, the invention adopts the following technical scheme:
an emergency stop device for searching dropped articles when a large-sized pulverizer works comprises an operation table arranged in an operation room, wherein the operation table comprises a controller, and the controller is electrically connected with each driving device of the pulverizer and used for controlling the working state of the pulverizer; the controller of the operating platform is also electrically connected with an emergency stop button arranged on the operating platform, and the emergency stop button is used for emergently stopping the working state of the first main belt conveyor at the downstream of the crusher in an emergency stop state.
Furthermore, the first main belt conveyor at the downstream of the crusher and all other main belt processes at the downstream of the crusher are electrically connected with the controller of the operation table to be controlled in an interlocking manner.
Furthermore, the emergency stop button is arranged on a central control screen and is a virtual button.
Further, the emergency stop button is bright red.
Furthermore, the emergency stop button is semicircular, and the pressing diameter of the emergency stop button is not less than 3 cm.
Further, the pressing diameter is 3-5 cm.
An emergency stop method comprising:
1) the method comprises the following steps that a belt conveyor emergency stop button is arranged on an operation table of a crusher post operation room, and the emergency stop button is used for emergently stopping a first main belt conveyor at the lower part of a crusher in an emergency stop state;
2) all the main belt processes at the downstream of the crusher are in an interlocking control state, and when a first main belt at the downstream of the crusher is stopped emergently, all the belt conveyors at the downstream of the belt to the coal tower stop running simultaneously;
3) after finding out the dropped articles, the 'emergency stop button' of the operating platform is rotated, the system is recovered to the normal interlocking working state, and the production operation is continued.
Further, the article comprises a hammer head or a hammer cake.
Furthermore, when abnormal sound and vibration happen in the running process of the crusher, post personnel judge that the article falls behind at the first time and slap the 'scram button' on the stop operating platform to trigger the belt conveyor to scram so as to lead the first main belt at the lower part of the crusher to stop emergently.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) the invention has the advantages of simple and practical application, quick and effective operation and easy on-site post operation, greatly improves the probability of finding the dropped hammer head and hammer handle before entering the coal tower, and solves the problem of poor reliability of the current method for processing the problem in the industry.
(2) The invention can better solve the problems of blockage, blockage and damage caused by the dropped heavy hammer head and hammer handle to the coke oven vehicle screw feeder and the dry quenching rotary sealing valve in the subsequent production operation, ensures the production continuity of the coke oven and greatly reduces the serious damage to the equipment.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic view of the production process of the pulverizer and the upstream and downstream belt conveyors shown in FIG. 1;
FIG. 2 is a block diagram of a control structure of the scram device;
description of reference numerals: 1-crusher upstream belt conveyor; 2-heavy duty pulverizer; 3-a first main belt downstream of the crusher; 4-a second main belt at the downstream of the crusher; 5-an operation table; 6-a controller; 7-operating the button.
Detailed Description
As shown in fig. 2, the emergency stop device for searching for dropped articles when a large-sized pulverizer works comprises an operation table 5 arranged in an operation room, wherein the operation table 5 comprises a controller 6, and the controller 6 is electrically connected with each driving device of the pulverizer and used for controlling the working state of the pulverizer; the controller 6 of the operating platform 5 is also electrically connected with an emergency stop button arranged on the operating platform 57, and the emergency stop button 7 is used for emergently stopping the working state of the first main belt machine 3 at the downstream of the crusher in an emergency stop state.
The first main belt machine 3 at the downstream of the crusher and all other main belt processes at the downstream of the crusher are electrically connected with the controller 6 of the operation table for interlocking control. The emergency stop button 7 is bright red, the emergency stop button 7 is semicircular, and the pressing diameter is 3-5 cm.
Referring to fig. 1, the invention also provides an emergency stop method for quickly searching objects (mainly hammer heads or hammer cakes) falling off when a large-sized pulverizer rotates at a high speed aiming at the pulverizer and the production process of upstream and downstream belt conveyors in fig. 1, when abnormal sound and vibration happen in the operation process of the pulverizer, post personnel judge that the hammer heads or the hammer cakes fall off at the first time and then quickly slap and stop a 'emergency stop button' on an operation table, and trigger the emergency stop action of the belt conveyors to make a first main belt at the downstream of the pulverizer stop emergently. All the main belt processes at the downstream of the crusher are in an interlocking control state during normal production, so that all the belt conveyors from the downstream of the crusher to the coal tower stop running simultaneously when the first main belt at the downstream of the crusher stops emergently. At the moment, the post personnel can find the falling hammer heads or hammer cakes on the first downstream belt or other belt conveyors. After the emergency stop button is found, the operation table is rotated, the system is recovered to a normal interlocking working state, and the production operation is continued.
In the coking industry, the blended coal needs to be crushed and refined by a large crusher before entering a coal tower, and the method is a feasible emergency stop method for quickly finding out heavy hammers and hammer handles which fall off when the large crusher rotates at a high speed. The problem of poor reliability of the current method when the problem is treated in the industry at present is solved, and after the heavy hammer head and the hammer handle of the large-scale pulverizer rotating at high speed fall, the probability that the falling hammer head and the falling hammer handle are found before entering a coal tower can be greatly improved, so that the problems of blockage, blockage and damage caused by a coke oven vehicle screw feeder and a dry quenching rotary sealing valve in subsequent production operation after the broken hammer head and the broken hammer handle enter the coal tower along with a belt conveyor operating at high speed are reduced, and continuous production is interrupted and the equipment is seriously damaged. The device is simple and practical, the method is feasible, and the field post operation is easy.
The method of the invention can save cost by 30 ten thousand yuan per year.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. The utility model provides a seek scram device of article that large-scale rubbing crusher during operation dropped which characterized in that: the crusher comprises an operation table arranged in an operation room, wherein the operation table comprises a controller, and the controller is electrically connected with each driving device of the crusher and used for controlling the working state of the crusher; the controller of the operating platform is also electrically connected with an emergency stop button arranged on the operating platform, and the emergency stop button is used for emergently stopping the working state of the first main belt conveyor at the downstream of the crusher in an emergency stop state.
2. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 1, characterized in that: the first main belt conveyor at the downstream of the crusher and all other main belt processes at the downstream of the crusher are electrically connected with the controller of the operation table for interlocking control.
3. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 1, characterized in that: the emergency stop button is bright red.
4. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 3, characterized in that: the emergency stop button is semicircular, and the pressing diameter of the emergency stop button is not less than 3 cm.
5. The emergency stop device for searching dropped articles of a large-scale pulverizer working according to claim 4, characterized in that: the pressing diameter is 3-5 cm.
6. The scram method of the scram device according to claim 5, characterized by comprising:
1) the method comprises the following steps that a belt conveyor emergency stop button is arranged on an operation table of a crusher post operation room, and the emergency stop button is used for emergently stopping a first main belt conveyor at the lower part of a crusher in an emergency stop state;
2) all the main belt processes at the downstream of the crusher are in an interlocking control state, and when a first main belt at the downstream of the crusher is stopped emergently, all the belt conveyors at the downstream of the belt to the coal tower stop running simultaneously;
3) after finding out the dropped articles, the 'emergency stop button' of the operating platform is rotated, the system is recovered to the normal interlocking working state, and the production operation is continued.
7. The scram method of claim 6, wherein the article comprises a hammer head or a hammer cake.
8. The scram method as claimed in claim 6, wherein when abnormal sound and vibration occur during the operation of the crusher, the post personnel judges that the article falls behind for the first time and slams the "scram button" on the stop console to trigger the scram action of the belt conveyor to make the first main belt at the downstream of the crusher stop emergently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793512.3A CN112011348A (en) | 2020-08-10 | 2020-08-10 | Emergency stop device and method for searching dropped articles of large crusher during working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793512.3A CN112011348A (en) | 2020-08-10 | 2020-08-10 | Emergency stop device and method for searching dropped articles of large crusher during working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112011348A true CN112011348A (en) | 2020-12-01 |
Family
ID=73499600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010793512.3A Pending CN112011348A (en) | 2020-08-10 | 2020-08-10 | Emergency stop device and method for searching dropped articles of large crusher during working |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112011348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023171765A1 (en) * | 2022-03-11 | 2023-09-14 | Ｊｆｅスチール株式会社 | Coal grinding method, method of manufacturing coal for coke, and coal grinding apparatus |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1411025A (en) * | 1972-05-30 | 1975-10-22 | Hoogovens Ijmuiden Bv | Method for operating a coke oven plant and such a plant itself |
| GB8308218D0 (en) * | 1982-03-26 | 1983-05-05 | Sumikin Coke Co Ltd | Automatic control system |
| CN201503550U (en) * | 2009-09-07 | 2010-06-09 | 河北钢铁股份有限公司 | Monitoring device for preventing convey of dry quenched coke from being obstructed |
| CN202758185U (en) * | 2012-08-10 | 2013-02-27 | 天津中煤煤矿机电有限公司 | Coal mine underground communication control system |
| CN103204353A (en) * | 2013-01-25 | 2013-07-17 | 世林（漯河）冶金设备有限公司 | Long-service-life highly-efficient safe chain-belt pallet-type conveyor system |
| CN203411503U (en) * | 2013-07-26 | 2014-01-29 | 上海成名电气有限公司 | Coke quenching car device of coking system |
| CN104629778A (en) * | 2015-02-12 | 2015-05-20 | 中冶焦耐工程技术有限公司 | Coke plugging prevention device of dry quenching furnace |
| CN105014828A (en) * | 2015-07-13 | 2015-11-04 | 重庆市聚益橡胶制品有限公司 | Novel rubber crusher with sudden stopping and dust sucking devices |
| CN205204105U (en) * | 2015-11-27 | 2016-05-04 | 山东新巨龙能源有限责任公司 | Elevating conveyor blocking device |
| CN206916064U (en) * | 2017-06-30 | 2018-01-23 | 包头钢铁（集团）有限责任公司 | Quickly remove the dry device for putting out graphite in car Jiao's tank |
| CN207346670U (en) * | 2017-08-28 | 2018-05-11 | 文山麻栗坡紫金钨业集团有限公司 | A kind of ore deposit product transport emergent control switching device |
| CN108300496A (en) * | 2018-03-27 | 2018-07-20 | 包头钢铁（集团）有限责任公司 | Safety device |
| CN108913180A (en) * | 2018-06-15 | 2018-11-30 | 甘肃润源环境资源科技有限公司 | A kind of device and method of coke oven coal-blending coking commerical test prediction coke quality |
| CN109735350A (en) * | 2019-02-26 | 2019-05-10 | 内蒙古金石镁业有限公司 | A kind of coke oven coaling smoke collecting devices and methods therefor |
| CN208987353U (en) * | 2019-05-10 | 2019-06-18 | 华创机器人制造有限公司 | Multifunction straw processor |
| CN110525992A (en) * | 2019-08-19 | 2019-12-03 | 包头钢铁（集团）有限责任公司 | The blanking of big volume silo is let slip a remark and coal blending operating method |
| CN212375224U (en) * | 2020-08-10 | 2021-01-19 | 包头钢铁（集团）有限责任公司 | Emergency stop device for searching falling articles of large-sized pulverizer during working |
-
2020
- 2020-08-10 CN CN202010793512.3A patent/CN112011348A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1411025A (en) * | 1972-05-30 | 1975-10-22 | Hoogovens Ijmuiden Bv | Method for operating a coke oven plant and such a plant itself |
| GB8308218D0 (en) * | 1982-03-26 | 1983-05-05 | Sumikin Coke Co Ltd | Automatic control system |
| CN201503550U (en) * | 2009-09-07 | 2010-06-09 | 河北钢铁股份有限公司 | Monitoring device for preventing convey of dry quenched coke from being obstructed |
| CN202758185U (en) * | 2012-08-10 | 2013-02-27 | 天津中煤煤矿机电有限公司 | Coal mine underground communication control system |
| CN103204353A (en) * | 2013-01-25 | 2013-07-17 | 世林（漯河）冶金设备有限公司 | Long-service-life highly-efficient safe chain-belt pallet-type conveyor system |
| CN203411503U (en) * | 2013-07-26 | 2014-01-29 | 上海成名电气有限公司 | Coke quenching car device of coking system |
| CN104629778A (en) * | 2015-02-12 | 2015-05-20 | 中冶焦耐工程技术有限公司 | Coke plugging prevention device of dry quenching furnace |
| CN105014828A (en) * | 2015-07-13 | 2015-11-04 | 重庆市聚益橡胶制品有限公司 | Novel rubber crusher with sudden stopping and dust sucking devices |
| CN205204105U (en) * | 2015-11-27 | 2016-05-04 | 山东新巨龙能源有限责任公司 | Elevating conveyor blocking device |
| CN206916064U (en) * | 2017-06-30 | 2018-01-23 | 包头钢铁（集团）有限责任公司 | Quickly remove the dry device for putting out graphite in car Jiao's tank |
| CN207346670U (en) * | 2017-08-28 | 2018-05-11 | 文山麻栗坡紫金钨业集团有限公司 | A kind of ore deposit product transport emergent control switching device |
| CN108300496A (en) * | 2018-03-27 | 2018-07-20 | 包头钢铁（集团）有限责任公司 | Safety device |
| CN108913180A (en) * | 2018-06-15 | 2018-11-30 | 甘肃润源环境资源科技有限公司 | A kind of device and method of coke oven coal-blending coking commerical test prediction coke quality |
| CN109735350A (en) * | 2019-02-26 | 2019-05-10 | 内蒙古金石镁业有限公司 | A kind of coke oven coaling smoke collecting devices and methods therefor |
| CN208987353U (en) * | 2019-05-10 | 2019-06-18 | 华创机器人制造有限公司 | Multifunction straw processor |
| CN110525992A (en) * | 2019-08-19 | 2019-12-03 | 包头钢铁（集团）有限责任公司 | The blanking of big volume silo is let slip a remark and coal blending operating method |
| CN212375224U (en) * | 2020-08-10 | 2021-01-19 | 包头钢铁（集团）有限责任公司 | Emergency stop device for searching falling articles of large-sized pulverizer during working |
Non-Patent Citations (1)
| Title |
|---|
| 杨光喜;戴启爱;李荣;: "PFCK可逆锤式破碎机事故原因分析及抢修", 煤炭加工与综合利用, no. 04, 25 April 2018 (2018-04-25), pages 31 - 36 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023171765A1 (en) * | 2022-03-11 | 2023-09-14 | Ｊｆｅスチール株式会社 | Coal grinding method, method of manufacturing coal for coke, and coal grinding apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101670355B (en) | Method and device for harmless treatment and high-efficiency resource recycling of waste refrigerator | |
| CN212375224U (en) | Emergency stop device for searching falling articles of large-sized pulverizer during working | |
| CN102327804A (en) | Closed type production line device and method for crushing aluminum oxide crusted blocks | |
| CN102527483A (en) | Open circuit production line device and method for crushing aluminum oxide crusting block | |
| CN209918047U (en) | Limestone crushing device | |
| CN112011348A (en) | Emergency stop device and method for searching dropped articles of large crusher during working | |
| CN107813444B (en) | System and method for producing rubber powder at normal temperature by using waste tires | |
| CN209035088U (en) | A kind of disassembling discarded refrigerator line with material sorting function | |
| CN112845165B (en) | Belt conveyor bulk foreign matter discernment sorting device in advance | |
| CN202824091U (en) | Refrigerator disassembling, crushing and sorting system | |
| CN203917164U (en) | Separate and after cutting at a high speed, take the lead and the device of waste material | |
| CN111229417A (en) | Quartz sand dry-process produced particle shaping machine for fracturing propping agent | |
| CN102813273A (en) | Pneumatic lotus seed sheller | |
| CN208275538U (en) | Gradually break formula underground mine use wheeled type crusher | |
| CN113786908B (en) | Bidirectional ball feeding method of ball feeding machine of ball mill | |
| CN201756361U (en) | Dust removal emptying machine set | |
| CN208661274U (en) | A kind of horizontal crusher being crushed for waste lithium ion | |
| CN211914084U (en) | Quartz sand dry-process produced particle shaping machine for fracturing propping agent | |
| CN209578327U (en) | Strip edge silk processing unit | |
| CN206767019U (en) | A kind of fortune Jiao's belt system protection device for preventing fluid-flywheel clutch failure | |
| CN203253505U (en) | High-efficiency environmentally-friendly fine and broken calcium carbide preparation system | |
| CN112372896A (en) | A high-efficient reducing mechanism for old and useless PE pipe recovery usefulness | |
| CN108686753B (en) | Real-time controllable hierarchical breaker | |
| CN206199406U (en) | A kind of lump coal breaking device | |
| CN219744995U (en) | Throwing block type glass bottle crusher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |