CN212837961U - Coal mine environment monitoring equipment - Google Patents

Coal mine environment monitoring equipment Download PDF

Info

Publication number
CN212837961U
CN212837961U CN202020881415.5U CN202020881415U CN212837961U CN 212837961 U CN212837961 U CN 212837961U CN 202020881415 U CN202020881415 U CN 202020881415U CN 212837961 U CN212837961 U CN 212837961U
Authority
CN
China
Prior art keywords
monitoring
inner cavity
front side
detachably arranged
supporting plate
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.)
Expired - Fee Related
Application number
CN202020881415.5U
Other languages
Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jungar Banner Yangjiaqu Coal Co ltd
Original Assignee
Lei Yuyan
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lei Yuyan filed Critical Lei Yuyan
Priority to CN202020881415.5U priority Critical patent/CN212837961U/en
Application granted granted Critical
Publication of CN212837961U publication Critical patent/CN212837961U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Emergency Alarm Devices (AREA)

Abstract

The utility model discloses a coal mine environment monitoring equipment, include: a storage mechanism; the outer cylinder is detachably arranged at the center of the rear side of the storage mechanism; the supporting plate is inserted into the inner cavity of the outer barrel, and positioning screw holes are formed in the front side of the supporting plate from top to bottom; the positioning bolt is in threaded connection with the top of the front side of the outer barrel and is meshed with the positioning screw hole in a threaded manner to brake the supporting plate; the monitoring mechanism is detachably arranged at the top of the supporting plate. This coal mine environment monitoring equipment can realize real-time supervision warning to gas concentration and oxygen concentration, avoids gas concentration too high to have the explosion risk to and oxygen concentration crosses lowly and arouses the staff to suffocate, and the practicality is strong, guarantees staff's life safety, and mine hole environmental monitoring is stable, is applicable to the coal mining and uses.

Description

Coal mine environment monitoring equipment
Technical Field
The utility model relates to an environmental monitoring technical field specifically is a colliery environmental monitoring equipment.
Background
Coal mines are areas where humans mine coal resources in coal-rich mining areas, and are generally divided into underground coal mines and opencast coal mines. When the coal seam is far from the ground surface, a tunnel is usually dug to the underground, so that the coal is a mineworker coal mine. When the coal seam is very close to the earth surface, the coal is generally excavated by directly stripping the earth surface, which is an open pit coal mine. The vast majority of coal mines in China belong to underground coal mines;
in coal mining, the phenomena of coal mine explosion and worker suffocation and death occur occasionally. Along with the continuous tunnelling of mine hole, gas and oxygen concentration can descend gradually, and gas risees, and the danger of explosion is also stronger and stronger, and oxygen concentration descends, and the staff appears the oxygen deficiency easily, suffocates even, and at present, there is not a monitoring facilities who is convenient for remove, is difficult to monitor gas and oxygen concentration, and the security of operation can't guarantee, threatens staff's life safety constantly, consequently, need to propose a monitoring facilities who is convenient for remove.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coal mine environment monitoring equipment to solve prior art at least and can not be to gas and oxygen concentration real-time supervision in the mine hole, the problem that staff's operation security is difficult to the assurance.
In order to achieve the above object, the utility model provides a following technical scheme: a coal mine environment monitoring apparatus comprising:
a storage mechanism;
the outer cylinder is detachably arranged at the center of the rear side of the storage mechanism;
the supporting plate is inserted into the inner cavity of the outer barrel, and positioning screw holes are formed in the front side of the supporting plate from top to bottom;
the positioning bolt is in threaded connection with the top of the front side of the outer barrel and is meshed with the positioning screw hole in a threaded manner to brake the supporting plate;
the monitoring mechanism is detachably arranged at the top of the supporting plate.
Preferably, a plurality of the positioning screw holes are arranged on the front side of the supporting plate from top to bottom in a clearance mode, and the distance between every two adjacent positioning screw holes is 10 cm.
Preferably, the storage mechanism comprises: the top parts of the front side and the rear side of the inner cavity of the shell are both provided with sliding chutes, and the central position of the rear side of the shell is detachably connected with the bottom part of the front side of the outer barrel; the sleeve is detachably arranged at the center of the bottom of the inner cavity of the shell, the inner wall of the sleeve is provided with slideways along the circumferential direction, and two ends of each slideway are sealed; the supporting column and the spring are respectively inserted at the upper end and the lower end of the inner cavity of the sleeve; the sliding blocks are circumferentially arranged at the bottom of the outer wall of the supporting column and are inserted into the inner cavity of the slide way; the tray is detachably arranged at the top of the support column; the limiting rod is detachably arranged at the right end of the top of the tray; the portable oxygen bottles are placed in the grooves of the tray; the cover plate is inserted into the inner cavity of the sliding groove and seals the top of the shell, and the top of the limiting rod is in contact with the bottom of the cover plate; multistage electric telescopic handle, two both ends around multistage electric telescopic handle difference screwed connection is in the left side wall top of shell, and multistage electric telescopic handle's right-hand member extends to the inner chamber of shell and can dismantle with the bottom left end of apron and be connected.
Preferably, the monitoring mechanism comprises: the monitoring box is detachably arranged at the top of the supporting plate; the PLC controller is connected to the bottom of the inner cavity of the monitoring box through a screw and is electrically connected with the multi-stage electric telescopic rod; the box door is hinged to the right end of the front side of the monitoring box; the switch is detachably arranged on the outer side of the box door and is electrically connected with the PLC; the air oxygen concentration sensor and the gas concentration sensor are respectively detachably arranged on the left outer wall and the right outer wall of the monitoring box; audible-visual annunciator, audible-visual annunciator can dismantle to set up in the top of monitoring box, and air oxygen concentration sensor, gas concentration sensor and audible-visual annunciator all with PLC controller electric connection.
Preferably, the number of the slide ways is four, and the four slide ways are distributed on the inner wall of the sleeve at intervals of 90 degrees clockwise.
Compared with the prior art, the beneficial effects of the utility model are that: the coal mine environment monitoring equipment can adjust the placement height of the monitoring mechanism through the matching of the outer cylinder, the supporting plate, the positioning screw hole and the positioning bolt, so that the height of the monitoring mechanism can be adjusted according to the height of the mine hole, the monitoring mechanism monitors the gas concentration and the oxygen concentration in the mine hole, alarms aiming at overhigh gas concentration or overlow oxygen concentration, prevents the life safety of workers from being threatened, the cover plate can move towards the right side through the storage mechanism, so that the tray is popped upwards, workers can conveniently take the portable oxygen cylinder to assist the workers to escape from the mine hole, thereby realizing real-time monitoring and alarming on the gas concentration and the oxygen concentration when in actual use, avoiding explosion risk caused by overhigh gas concentration, and the oxygen concentration is too low to cause the suffocation of workers, the practicability is strong, the life safety of the workers is ensured, the monitoring of the mine tunnel environment is stable, and the device is suitable for coal mining.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front cross-sectional view of the storage mechanism of FIG. 1;
fig. 3 is a schematic structural diagram of the monitoring mechanism in fig. 1.
In the figure: 2. the device comprises a storage mechanism, 21, a shell, 22, a sliding groove, 23, a sleeve, 24, a sliding way, 25, a supporting column, 26, a spring, 27, a sliding block, 28, a tray, 29, a limiting rod, 210, a portable oxygen bottle, 211, a cover plate, 212, a multi-stage electric telescopic rod, 3, an outer cylinder, 4, a supporting plate, 5, a positioning screw hole, 6, a positioning bolt, 7, a monitoring mechanism, 71, a monitoring box, 72, a PLC (programmable logic controller), 73, a box door, 74, a switch, 75, an air oxygen concentration sensor, 76, a gas concentration sensor, 77 and an audible and visual alarm.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a coal mine environment monitoring equipment, including storage mechanism 2, urceolus 3, backup pad 4, positioning screw 5, positioning bolt 6 and monitoring mechanism 7, urceolus 3 can be dismantled and set up in storage mechanism 2's rear side central point and put, backup pad 4 is pegged graft in the inner chamber of urceolus 3, and backup pad 4's front side is from last to all having seted up positioning screw 5 down, cooperation through backup pad 4 and urceolus 3 realizes supporting fixed to monitoring mechanism 7, positioning bolt 6 spiro union in the front side top of urceolus 3, and positioning bolt 6 and the 5 screw thread interlocks of positioning screw are to backup pad 4 braking, can make the length between backup pad 4 and the urceolus 3 become long or shorten under positioning screw 5 and positioning bolt 6's cooperation, reach the purpose that monitoring mechanism 7 placed the height, monitoring mechanism 7 can be dismantled and set up in backup.
Preferably, a plurality of positioning screw holes 5 are arranged on the front side of the supporting plate 4 from top to bottom at intervals, and the distance between every two adjacent positioning screw holes 5 is 10cm, so that the supporting plate 4 can be adjusted in height by 10cm as a minimum unit, thereby facilitating the height adjustment of the monitoring mechanism 7.
Preferably, the storage mechanism 2 further comprises a housing 21, a chute 22, a sleeve 23, a slide way 24, a support column 25, a spring 26, a slider 27, a tray 28, a limiting rod 29, a portable oxygen cylinder 210, a cover plate 211 and a multi-stage electric telescopic rod 212, the chutes 22 are respectively formed at the top of the front side and the rear side of the inner cavity of the housing 21, the center position of the rear side of the housing 21 is detachably connected with the bottom of the front side of the outer cylinder 3, the cover plate 211 is limited by the chute 22, it is ensured that the cover plate 211 can horizontally slide left and right, the sleeve 23 is detachably arranged at the center position of the bottom of the inner cavity of the housing 21, the slide way 24 is formed on the inner wall of the sleeve 23 along the circumferential direction, two ends of the slide way 24 are sealed, the support column 25 can be prevented from rotating by the cooperation of the slide way 24 and the slider 27, the support column 25, the spring 26 is a rotary spring, the elastic coefficient is 25N/CM, the spring 26 generates elastic deformation after being stretched or extruded, the spring is recovered to the initial state after external force is removed, the supporting column 25 is upwards bounced by the elasticity of the spring 26, the plurality of sliding blocks 27 are circumferentially arranged at the bottom of the outer wall of the supporting column 25, the sliding blocks 27 are inserted into the inner cavity of the slide way 24, the tray 28 is detachably arranged at the top of the supporting column 25, the limiting rod 29 is detachably arranged at the right end of the top of the tray 28, the plurality of portable oxygen bottles 210 are arranged in the groove of the tray 28, the portable oxygen bottles 210 are used for providing breathing oxygen for workers, suffocation of the workers in a mine cave is avoided, the cover plate 211 is inserted into the inner cavity of the slide way 22, the cover plate 211 is used for sealing the shell 21 and preventing dust from entering and sealing the top of the shell 21, and the top of, two multistage electric telescopic handle 212 are screwed respectively in both ends around the left side wall top of shell 21, and the right-hand member of multistage electric telescopic handle 212 extends to the inner chamber of shell 21 and can dismantle with the bottom left end of apron 211 and be connected, drive apron 211 through multistage electric telescopic handle 212 and remove to the right side.
Preferably, the monitoring mechanism 7 includes a monitoring box 71, a PLC controller 72, a box door 73, a switch 74, an air oxygen concentration sensor 75, a gas concentration sensor 76 and a sound-light alarm 77, the monitoring box 71 is detachably disposed on the top of the supporting plate 4, the PLC controller 72 is screwed to the bottom of the inner cavity of the monitoring box 71, the PLC controller 72 is electrically connected to the multi-stage electric telescopic rod 212, the PLC controller 72 is used for controlling the on/off of the air oxygen concentration sensor 75, the gas sensor 76, the sound-light alarm 77 and the multi-stage electric telescopic rod 212, the box door 73 is hinged to the right end of the front side of the monitoring box 71, the switch 74 is detachably disposed on the outer side of the box door 73, the switch 74 is electrically connected to the PLC controller 72, the switch 74 controls the on/off of the PLC controller 72, the air oxygen concentration sensor 75 and the gas concentration sensor 76 are detachably disposed on the left and right outer, oxygen concentration monitors in the mine hole through air oxygen concentration sensor 75, and gas sensor 76 is used for the monitoring of gas concentration in the mine hole, and audible-visual annunciator 77 can be dismantled and set up in monitoring box 71's top, and air oxygen concentration sensor 75, gas concentration sensor 76 and audible-visual annunciator 77 all with PLC controller 72 electric connection, utilize audible-visual annunciator 77's sound production, luminous, can be convenient for the staff discovery warning in the mine hole of lacquer black.
Preferably, the number of the slide ways 24 is four, and the four slide ways 24 are distributed on the inner wall of the sleeve 23 at intervals of 90 degrees clockwise, so that the support columns 25 can be limited from four directions, and the up-and-down movement stability of the support columns 25 is further improved.
The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.
When the device is used, the device is placed in a position to be monitored in a mine hole, the positioning bolt 6 is screwed to enable the positioning bolt 6 to move out of the positioning screw hole 5, the brake of the support plate 4 is released, the support plate 4 is moved upwards or downwards according to the height of the mine hole until the height of the monitoring mechanism 7 reaches the monitoring height, the positioning bolt 6 is screwed into the positioning screw hole 5 at the corresponding position to brake the support plate 4, the height adjustment of the monitoring mechanism 7 is completed, the switch 74 is pressed to enable the PLC controller 72 to be started, the PLC controller 72 controls the air oxygen concentration sensor 75 and the gas concentration sensor 76 to be started, the air oxygen concentration sensor 75 monitors the oxygen concentration in the mine hole, the gas concentration sensor 76 monitors the gas concentration in the mine hole, when the gas concentration is too high or too low, the air oxygen concentration sensor 75 or the gas concentration sensor 76 can feed back to the PLC controller 72 in the form of an electric signal, the PLC 72 controls the audible and visual alarm 77 and the multi-stage electric telescopic rod 212 to start, the audible and visual alarm 77 gives out sound and light to give an alarm, the multi-stage electric telescopic rod 212 pushes the cover plate 211 to slide towards the right side along the inner cavity of the sliding groove 22, the stop of the limiting rod 29 is removed after the cover plate 211 is separated from the top of the limiting rod 29, the spring 26 pushes the supporting column 25 to move upwards along the inner wall of the sleeve 23 under the action of self elasticity, the sliding block 27 slides upwards in the sliding way 24 until the sliding block 27 abuts against the top of the sliding way 24, the portable oxygen bottle 210 on the tray 28 extends out of the shell 21, the portable oxygen bottle 210 is convenient for a worker to take, the worker is assisted to breathe, therefore, the device can monitor the concentration of gas and oxygen in the mine hole in real time, ensure the operation safety of workers, avoid casualties and greatly improve the safety of coal mining.
In the description of the present invention, it is to be understood that the terms "bottom", "one end", "middle", "other end", "upper", "one side", "top", "inner", "front", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated; also, unless expressly stated or limited otherwise, the terms "removably disposed," "fixedly attached," "hinged," "plugged," "opened," "screwed," "electrically attached," "screwed," and the like are to be construed broadly and, for example, as either fixedly attached or removably attached, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A coal mine environment monitoring device, comprising:
a storage mechanism (2);
the outer cylinder (3), the outer cylinder (3) is detachably arranged at the rear center position of the storage mechanism (2);
the supporting plate (4) is inserted into the inner cavity of the outer barrel (3), and positioning screw holes (5) are formed in the front side of the supporting plate (4) from top to bottom;
the positioning bolt (6) is in threaded connection with the top of the front side of the outer barrel (3), and the positioning bolt (6) is in threaded engagement with the positioning screw hole (5) to brake the support plate (4);
the monitoring mechanism (7), the monitoring mechanism (7) can be detachably arranged at the top of the supporting plate (4).
2. A coal mine environment monitoring apparatus as claimed in claim 1, wherein: a plurality of the positioning screw holes (5) are arranged on the front side of the support plate (4) from top to bottom in a clearance mode, and the distance between every two adjacent positioning screw holes (5) is 10 cm.
3. A coal mine environment monitoring apparatus as claimed in claim 1, wherein: the storage mechanism (2) comprises:
the top parts of the front side and the rear side of the inner cavity of the shell (21) are respectively provided with a sliding chute (22), and the central position of the rear side of the shell (21) is detachably connected with the bottom part of the front side of the outer cylinder (3);
the sleeve (23) is detachably arranged at the center of the bottom of the inner cavity of the shell (21), the inner wall of the sleeve (23) is provided with slide ways (24) along the circumferential direction, and two ends of each slide way (24) are sealed;
the supporting column (25) and the spring (26) are respectively inserted into the upper end and the lower end of the inner cavity of the sleeve (23);
the sliding blocks (27) are arranged at the bottom of the outer wall of the supporting column (25) along the circumferential direction, and the sliding blocks (27) are inserted into the inner cavity of the slide way (24);
the tray (28), the said tray (28) is set up removably on the top of the support column (25);
the limiting rod (29), the limiting rod (29) is detachably arranged at the right end of the top of the tray (28);
the portable oxygen cylinders (210), a plurality of the portable oxygen cylinders (210) are placed in the grooves of the tray (28);
the cover plate (211) is inserted into the inner cavity of the sliding groove (22) in an inserting mode, the top of the shell (21) is sealed, and the top of the limiting rod (29) is in contact with the bottom of the cover plate (211);
the multi-stage electric telescopic rod (212) is connected to the front end and the rear end of the top of the left side wall of the shell (21) through screws respectively, and the right end of the multi-stage electric telescopic rod (212) extends to the inner cavity of the shell (21) and is detachably connected with the left end of the bottom of the cover plate (211).
4. A coal mine environment monitoring apparatus as claimed in claim 1, wherein: the monitoring mechanism (7) comprises:
the monitoring box (71), the monitoring box (71) is detachably arranged on the top of the supporting plate (4);
the PLC controller (72) is connected to the bottom of the inner cavity of the monitoring box (71) through screws, and the PLC controller (72) is electrically connected with the multi-stage electric telescopic rod (212);
the door (73) is hinged to the right end of the front side of the monitoring box (71);
the switch (74) is detachably arranged on the outer side of the box door (73), and the switch (74) is electrically connected with the PLC (72);
the gas concentration monitoring device comprises an air oxygen concentration sensor (75) and a gas concentration sensor (76), wherein the air oxygen concentration sensor (75) and the gas concentration sensor (76) are respectively detachably arranged on the left outer wall and the right outer wall of a monitoring box (71);
audible-visual annunciator (77), audible-visual annunciator (77) can be dismantled and set up in the top of monitoring box (71), and air oxygen concentration sensor (75), gas concentration sensor (76) and audible-visual annunciator (77) all with PLC controller (72) electric connection.
5. A coal mine environment monitoring apparatus as claimed in claim 3, wherein: the number of the slide ways (24) is four, and the four slide ways (24) are distributed on the inner wall of the sleeve (23) at intervals of 90 degrees clockwise.
CN202020881415.5U 2020-05-24 2020-05-24 Coal mine environment monitoring equipment Expired - Fee Related CN212837961U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020881415.5U CN212837961U (en) 2020-05-24 2020-05-24 Coal mine environment monitoring equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020881415.5U CN212837961U (en) 2020-05-24 2020-05-24 Coal mine environment monitoring equipment

Publications (1)

Publication Number Publication Date
CN212837961U true CN212837961U (en) 2021-03-30

Family

ID=75167692

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020881415.5U Expired - Fee Related CN212837961U (en) 2020-05-24 2020-05-24 Coal mine environment monitoring equipment

Country Status (1)

Country Link
CN (1) CN212837961U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113090332A (en) * 2021-05-08 2021-07-09 重庆工程职业技术学院 Multifunctional environment monitoring equipment for coal mine
CN113431636A (en) * 2021-07-21 2021-09-24 赵佳琛 Intelligent safety monitoring equipment of ore hole convenient to place

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113090332A (en) * 2021-05-08 2021-07-09 重庆工程职业技术学院 Multifunctional environment monitoring equipment for coal mine
CN113090332B (en) * 2021-05-08 2023-09-19 重庆工程职业技术学院 Multifunctional environment monitoring equipment for coal mine
CN113431636A (en) * 2021-07-21 2021-09-24 赵佳琛 Intelligent safety monitoring equipment of ore hole convenient to place

Similar Documents

Publication Publication Date Title
CN212837961U (en) Coal mine environment monitoring equipment
CN206917554U (en) The fire exit door that a kind of energy automatic detection is closed
CN103845830B (en) A kind of automatic fire extinguisher for self-burning of vehicle
CN113203433A (en) Coal mine underground water inrush early warning monitoring device and method
CN108004953A (en) A kind of geological disaster landslide security warning equipment
CN115147995A (en) Fire prevention alarm system for smart city safety engineering
CN216249447U (en) Fire control warning light based on thing networking
CN110685748A (en) Multifunctional personnel monitoring equipment for mine
CN113217325A (en) Mining multifunctional double-liquid grouting pump
CN212864046U (en) Lifting device for fire engineering for avoiding articles from falling
CN211724468U (en) Intelligent fire extinguishing alarm device
CN214485392U (en) Fire control terminal device based on fire industry cloud
CN220699622U (en) Crawler-type explosion-proof robot
CN202907878U (en) Safety helmet for warning mine accident
CN112268206B (en) Electrical fire detection equipment
CN114144007B (en) Explosion-proof protection device for coal mine electromechanical device
CN213586013U (en) Intelligent inspection robot for mine risk factors
CN112065498A (en) Wall-hanging spraying dust fall processing apparatus is used in colliery borehole operation
CN202851041U (en) Underground tunneling working face air quantity monitoring alarm device
CN213869972U (en) Mine safety mining protector
CN218332802U (en) Fixed fire early warning device for underground coal mine
CN214787512U (en) Fire prevention and extinguishing system for lower-layer stoping upper-layer goaf
CN214585390U (en) Gaseous spontaneous combustion of mining collecting space area detects early warning device
CN214988297U (en) Mining intrinsic safety type spring deviation sensor
CN220726380U (en) Blocking device for coal mine fireproof

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20210812

Address after: 010407 naritsong Town, Jungar banner, Ordos City, Inner Mongolia Autonomous Region

Patentee after: Jungar banner yangjiaqu Coal Co.,Ltd.

Address before: 113208 No.16, group 6, dongxingtun, Zhaojia village, Pingdingshan Town, Xinbin Manchu Autonomous County, Fushun City, Liaoning Province

Patentee before: Lei Yuyan

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210330