CN215438288U - Coal bunker feeding device of thermal power plant - Google Patents
Coal bunker feeding device of thermal power plant Download PDFInfo
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- CN215438288U CN215438288U CN202122313083.8U CN202122313083U CN215438288U CN 215438288 U CN215438288 U CN 215438288U CN 202122313083 U CN202122313083 U CN 202122313083U CN 215438288 U CN215438288 U CN 215438288U
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Abstract
The utility model discloses a coal bunker feeding device of a thermal power plant, which comprises a clip-shaped mounting seat, wherein mounting grooves with openings at the top and the bottom are respectively formed in two sides of the clip-shaped mounting seat, conveying rollers are rotatably mounted between the inner wall of the front side and the inner wall of the rear side of each mounting groove, the two conveying rollers are in transmission connection with the same conveying belt, a driving motor is fixedly connected to the front side of a clip-shaped mounting frame, the rear end of an output shaft of the driving motor is fixedly connected with the front end of the conveying roller positioned on the left side of the two conveying rollers, and a plurality of supporting rollers are rotatably mounted between the inner wall of the front side and the inner wall of the rear side of the clip-shaped mounting frame. The utility model is convenient to rapidly adjust the tension degree of the conveyer belt, does not need to disassemble the conveyer roller, improves the adjustment efficiency, is convenient to automatically clean the coal particles bonded on the outer side of the conveyer belt in the transmission process of the conveyer belt, does not need personnel to clean alone, and meets the use requirement.
Description
Technical Field
The utility model relates to the technical field of coal bunker feeding equipment, in particular to a coal bunker feeding device of a thermal power plant.
Background
One of the main devices of the thermal power plant is a boiler, the main fuel of the boiler is a large amount of coal, according to the requirements of relevant specifications, coal bunkers are generally built in the front of the boiler, namely a main factory building of the thermal power plant, the coal is stored through the coal bunkers, a coal bunker feeding device is needed when the coal is conveyed into the coal bunkers, most of the existing coal bunker feeding devices adopt belt conveyors to feed the coal, annular conveying belts of the belt conveyors cling to the surfaces of rollers with enough tension, circumferential force is transmitted by the friction action of the belt conveyors and the rollers during operation, a speed reducer transmits power to the rollers, and the conveying belts are pushed to rotate by the friction force between the rollers and the conveying belts to convey materials;
current belt conveyor, the phenomenon that the conveyer belt is lax can often appear owing to bear the weight of the object for a long time, thereby cause the transmission, skid in the transmission course, the condition such as pine takes off, influence normal pay-off operation, consequently, need often adjust the rate of tension of conveyer belt, the mode of current adjustment conveyer belt rate of tension, a cylinder that needs to dismantle in two cylinders under the most circumstances adjusts the distance between two cylinders, reach the regulation of rate of tension, this kind of regulation mode complex operation, adjustment inefficiency, high labor strength, and the process of using does not possess the automatic function of cleaning the coal particle that bonds on the conveyer belt surface, can not satisfy the user demand, therefore we have proposed a coal bunker feeding device of thermal power plant and have been used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a coal bunker feeding device of a thermal power plant.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a coal bunker feeding device of a thermal power plant comprises a clip-shaped mounting seat, wherein mounting grooves with the tops and the bottoms arranged as openings are respectively arranged on two sides of the clip-shaped mounting seat, conveying rollers are rotatably arranged between the front inner wall and the rear inner wall of the mounting grooves, the two conveying rollers are in transmission connection with the same conveying belt, the front side of a clip-shaped mounting frame is fixedly connected with a driving motor, the rear end of an output shaft of the driving motor is fixedly connected with the front ends of the conveying rollers positioned on the left side in the two conveying rollers, a plurality of supporting rollers are rotatably arranged between the front inner wall and the rear inner wall of the clip-shaped mounting frame, the tops of the supporting rollers are in movable contact with the tops of the inner sides of the conveying belts, cleaning brushes are fixedly connected on the inner walls of one sides, which are close to each other, a plurality of bristles are arranged on the tops of the cleaning brushes, the tops of the bristles are in movable contact with the bottoms of the conveying belts, and first through holes are respectively arranged on the inner walls of two sides of the clip-shaped mounting seat, the conveying belt is positioned in the two first through holes, the first through holes are communicated with corresponding mounting grooves, a guide roller is rotatably mounted between the front inner wall and the rear inner wall of each first through hole, the top of the guide roller is in movable contact with the bottom of the conveying belt, a second through hole is formed in the inner wall of the top of each first through hole, one side, close to each other, of each second through hole is provided with an opening, a rotating shaft is rotatably mounted between the inner wall of the front side and the inner wall of the rear side of each second through hole, an obliquely arranged extrusion mechanism is fixedly sleeved on the rotating shaft, one side, close to each other, of each two extrusion mechanisms extends into the square mounting frame, the bottom of each extrusion mechanism is in rolling contact with the bottom of the inner side of the conveying belt, a rotary driving mechanism is fixedly sleeved on the rotating shaft, a moving rod is arranged in each second through hole, the rotary driving mechanism is embedded and fixed on the corresponding moving rod, the right side of the moving rod is fixedly connected with the guide mechanism, and one side, far away from each second through hole, is provided with a first groove, the guide mechanism is fixedly connected with the top inner wall and the bottom inner wall of the corresponding first groove, the inner wall of one side, away from each other, of each second through hole is rotatably provided with a screw rod, the moving rod is sleeved on the corresponding screw rod in a threaded manner, the bottom end of each screw rod extends into the corresponding first through hole, the two screw rods are fixedly sleeved with the same linkage mechanism, the top inner wall of the first through hole on the right side is fixedly connected with a first motor, and the top end of an output shaft of the first motor is fixedly connected with the bottom end of the screw rod on the right side in the two screw rods.
Preferably, the extrusion mechanism includes that fixed cover establishes the bull stick in the pivot, and two bull sticks slope symmetry set up, and the one end that two bull sticks are close to each other all rotates and installs the squeeze roll, and the bottom of squeeze roll and the inboard bottom rolling contact of conveyer belt.
Preferably, the rotary driving mechanism comprises a gear fixedly sleeved on the rotating shaft, the gear is located on the front side of the corresponding rotating rod, one side, away from each other, of each of the two gears is meshed with a rack, and the rack is embedded and fixed on one side, close to the rotating shaft, of the corresponding moving rod.
Preferably, the guide mechanism comprises moving blocks, one side, close to each other, of each of the two moving blocks is fixedly connected with the bottom of one side, far away from each other, of each of the two moving rods, a positioning rod is fixedly connected between the inner wall of the top part and the inner wall of the bottom part of the first groove, and the moving blocks are slidably sleeved on the corresponding positioning rods.
Preferably, the linkage mechanism comprises two chain wheels, the chain wheels are positioned in the corresponding first through holes and fixedly sleeved on the screw rods, and the two chain wheels are in transmission connection with the same chain.
Preferably, the front end and the rear side of the conveying roller are fixedly connected with round shafts, the front inner wall and the rear inner wall of the mounting groove are fixedly connected with first bearings, the inner sides of the inner rings of the first bearings are fixedly connected with the outer sides of the corresponding round shafts, and the front ends of the round shafts in the front left are fixedly connected with the rear ends of the output shafts of the driving motors.
Preferably, the top end of the moving rod is fixedly connected with a limiting block, the top end of the moving rod is provided with a threaded hole, and the threaded hole is in threaded connection with the corresponding screw.
Preferably, the embedded grooves are formed in one sides, close to each other, of the two moving rods, and the inner walls of the embedded grooves are fixedly connected with the outer sides of the corresponding racks.
Compared with the prior art, the utility model has the beneficial effects that:
the whole device is positioned at the inlet of a coal bunker, the driving motor is started to drive the left conveying roller to rotate through a round shaft at the left front, the left conveying roller drives the right conveying roller to rotate through the conveying belt, the two conveying rollers simultaneously rotate and drive the conveying belt to carry out conveying operation, and the bottom of the conveying belt rubs with a hairbrush on the cleaning brush while the conveying belt rotates, so that coal particles adhered to the conveying belt are cleaned;
when adjusting the rate of tension of conveyer belt, the screw rod that the first motor of forward start drove the right side rotates, the screw rod on right side drives left screw rod through two sprockets and chain and rotates, the corresponding carriage release lever rebound of drive when the screw rod pivoted, the carriage release lever drives the rack rebound that corresponds, the rack drives rather than engaged with gear revolve, the gear drives the bull stick through the pivot that corresponds and rotates downwards, the bull stick drives the squeeze roll that corresponds and extrudees the inboard bottom of conveyer belt downwards, make the conveyer belt by extrusion deformation tighten, and then reached the regulation to conveyer belt rate of tension.
The utility model is convenient to rapidly adjust the tension degree of the conveyer belt, does not need to disassemble the conveyer roller, improves the adjustment efficiency, is convenient to automatically clean the coal particles bonded on the outer side of the conveyer belt in the transmission process of the conveyer belt, does not need personnel to clean alone, and meets the use requirement.
Drawings
FIG. 1 is a schematic structural diagram of a coal bunker feeding device of a thermal power plant according to the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
fig. 3 is an enlarged schematic view of a portion a in fig. 2.
In the figure: 100-square-shaped mounting seats, 101 mounting grooves, 102 conveying rollers, 103 conveying belts, 104 driving motors, 1 supporting roller, 2 cleaning brushes, 3 first through holes, 4 guide rollers, 5 second through holes, 6 rotating rods, 7 squeezing rollers, 8 rotating shafts, 9 first grooves, 10 moving rods, 11 moving blocks, 12 positioning rods, 13 racks, 14 screw rods, 15 first motors, 16 chain wheels and 17 chains.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a coal bunker feeding device of a thermal power plant comprises a clip-shaped mounting seat 100, mounting grooves 101 with top and bottom arranged as openings are respectively formed on two sides of the clip-shaped mounting seat 100, conveying rollers 102 are rotatably mounted between the front inner wall and the rear inner wall of the mounting grooves 101, the two conveying rollers 102 are in transmission connection with a same conveying belt 103, a driving motor 104 is fixedly connected to the front side of the clip-shaped mounting frame 100, the rear end of an output shaft of the driving motor 104 is fixedly connected with the front ends of the conveying rollers 102 positioned on the left side in the two conveying rollers 102, a plurality of supporting rollers 1 are rotatably mounted between the front inner wall and the rear inner wall of the clip-shaped mounting frame 100, the tops of the supporting rollers 1 are in movable contact with the tops of the inner sides of the conveying belts 103, cleaning brushes 2 are fixedly connected to the inner walls on the sides of the two mounting grooves 101 close to each other, and a plurality of bristles are arranged on the tops of the cleaning brushes 2, the top of the brush hair is movably contacted with the bottom of the conveyer belt 103, the inner walls of two sides of the clip-shaped mounting seat 100 are respectively provided with a first through hole 3, the conveyer belt 103 is positioned in two first through holes 3, the first through holes 3 are communicated with corresponding mounting grooves 101, a guide roller 4 is rotatably arranged between the inner wall of the front side and the inner wall of the rear side of each first through hole 3, the top of the guide roller 4 is movably contacted with the bottom of the conveyer belt 103, the inner wall of the top of each first through hole 3 is provided with a second through hole 5, the side, close to each other, of each second through hole 5 is provided with an opening, a rotating shaft 8 is rotatably arranged between the inner wall of the front side and the inner wall of the rear side of each second through hole 5, an obliquely arranged extrusion mechanism is fixedly sleeved on the rotating shaft 8, the side, close to each other, of each two extrusion mechanisms both extend into the clip-shaped mounting frame 100, the bottom of each extrusion mechanism is in rolling contact with the bottom of the inner side of the conveyer belt 103, a rotary driving mechanism is fixedly sleeved on the rotating shaft 8, a moving rod 10 is arranged in each second through hole 5, a rotary driving mechanism is embedded and fixed on the corresponding moving rod 10, a guide mechanism is fixedly connected to the right side of the moving rod 10, a first groove 9 is formed in each inner wall of one side, far away from each other, of each second through hole 5, the guide mechanism is fixedly connected with the inner wall of the top and the inner wall of the bottom of the corresponding first groove 9, a screw 14 is rotatably mounted on each inner wall of one side, far away from each other, of each second through hole 5, the moving rod 10 is sleeved on the corresponding screw 14 in a threaded manner, the bottom end of each screw 14 extends into the corresponding first through hole 3, the same linkage mechanism is fixedly sleeved on the two screws 14, a first motor 15 is fixedly connected to the inner wall of the top of the first through hole 3 on the right side, and the top end of an output shaft of the first motor 15 is fixedly connected with the bottom end of the screw 14 on the right side of the two screws 14;
the extrusion mechanism comprises rotating rods 6 fixedly sleeved on the rotating shaft 8, the two rotating rods 6 are obliquely and symmetrically arranged, extrusion rollers 7 are rotatably mounted at the ends, close to each other, of the two rotating rods 6, and the bottoms of the extrusion rollers 7 are in rolling contact with the bottoms of the inner sides of the conveying belts 103;
the rotary driving mechanism comprises gears fixedly sleeved on the rotating shaft 8, the gears are positioned on the front sides of the corresponding rotating rods 6, racks 13 are meshed on the sides, far away from each other, of the two gears, and the racks 13 are fixedly embedded on the sides, close to the rotating shaft 8, of the corresponding moving rods 10;
the guide mechanism comprises moving blocks 11, one sides, close to each other, of the two moving blocks 11 are fixedly connected with the bottoms of the sides, far away from each other, of the two moving rods 10 respectively, positioning rods 12 are fixedly connected between the inner walls of the tops and the bottoms of the first grooves 9, and the moving blocks 11 are sleeved on the corresponding positioning rods 12 in a sliding mode;
the linkage mechanism comprises two chain wheels 16, the chain wheels 16 are positioned in the corresponding first through holes 3 and fixedly sleeved on the screw rods 14, and the two chain wheels 16 are in transmission connection with the same chain 17.
In the utility model, the front end and the rear side of a conveying roller 102 are fixedly connected with round shafts, the front inner wall and the rear inner wall of a mounting groove 101 are fixedly connected with first bearings, the inner sides of the inner rings of the first bearings are fixedly connected with the outer sides of the corresponding round shafts, the front end of the round shaft positioned at the front left is fixedly connected with the rear end of an output shaft of a driving motor 104, the top ends of moving rods 10 are fixedly connected with limit blocks, the top ends of the moving rods 10 are provided with threaded holes which are in threaded connection with corresponding screw rods 14, the sides of the two moving rods 10 close to each other are provided with embedded grooves, and the inner walls of the embedded grooves are fixedly connected with the outer sides of corresponding racks 13. The personnel are not needed to be cleaned independently, and the use requirement is met.
The working principle is as follows: when the coal bunker cleaning device is used, the whole device is positioned at an inlet of a coal bunker, the driving motor 104 is started, an output shaft of the driving motor 104 drives the left conveying roller 102 to rotate through a round shaft at the front left, the left conveying roller 102 drives the right conveying roller 102 to rotate through the conveying belt 103, the two conveying rollers 102 simultaneously rotate and drive the conveying belt 103 to carry out conveying operation, coal to be conveyed is placed on the conveying belt 103, conveying operation is carried out on the coal in the transmission process of the conveying belt 103, the bottom of the conveying belt 103 is rubbed with the brush on the cleaning brush 2 while the conveying belt 103 rotates, coal particles adhered on the conveying belt 103 are cleaned under the friction force, and no personnel are required to carry out cleaning operation independently;
when the conveyer belt 103 is used for a long time and slipping occurs, and the tension of the conveyer belt 103 needs to be adjusted, the first motor 15 is started in the forward direction, the output shaft of the first motor 15 drives the right screw 14 to rotate, the right screw 14 drives the right chain wheel 16 to rotate, the right chain wheel 16 drives the left chain wheel 16 to rotate through the chain 17, the left chain wheel 16 drives the left screw 14 to rotate, under the action of the threaded hole formed on the moving rod 10, the screw 14 drives the corresponding moving rod 10 to move upwards while rotating, the moving rod 10 drives the corresponding rack 13 to move upwards, the rack 13 drives the gear meshed with the rack to rotate, the gear drives the corresponding rotating shaft 8 to rotate, the rotating shaft 8 drives the corresponding rotating rod 6 to rotate downwards, because the two rotating rods 6 are arranged in an inclined symmetrical manner, the two rotating rods 6 rotate in the direction away from each other, the rotating rod 6 drives the corresponding extrusion roller 7 to rotate and extrude the inner bottom of the conveyer belt 103 downwards, make the conveyer belt 103 tight by extrusion deformation, and then reached the regulation to the conveyer belt 103 rate of tension for be convenient for adjust the rate of tension of conveyer belt 103, need not dismantle and carry cylinder 102, improve adjustment efficiency.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. A coal bunker feeding device of a thermal power plant comprises a clip-shaped mounting seat (100), wherein mounting grooves (101) with the tops and the bottoms arranged for openings are respectively formed in two sides of the clip-shaped mounting seat (100), conveying rollers (102) are rotatably mounted between the inner walls of the front side and the rear side of each mounting groove (101), the two conveying rollers (102) are in transmission connection with a same conveying belt (103), a driving motor (104) is fixedly connected to the front side of the clip-shaped mounting seat (100), the rear end of an output shaft of the driving motor (104) is fixedly connected with the front ends of the conveying rollers (102) positioned on the left side in the two conveying rollers (102), the coal bunker feeding device is characterized in that a plurality of supporting rollers (1) are rotatably mounted between the inner walls of the front side and the inner walls of the rear side of the clip-shaped mounting seat (100), the tops of the supporting rollers (1) are in movable contact with the tops of the inner sides of the conveying belts (103), cleaning brushes (2) are fixedly connected to the inner walls of one sides of the two mounting grooves (101) close to each other, the top of the cleaning brush (2) is provided with a plurality of brush bristles, the tops of the brush bristles are in movable contact with the bottom of the conveying belt (103), the inner walls of two sides of the clip-shaped mounting seat (100) are respectively provided with a first through hole (3), the conveying belt (103) is positioned in the two first through holes (3), the first through holes (3) are communicated with corresponding mounting grooves (101), a guide roller (4) is rotatably arranged between the inner wall of the front side and the inner wall of the rear side of the first through hole (3), the top of the guide roller (4) is in movable contact with the bottom of the conveying belt (103), the inner wall of the top of the first through hole (3) is provided with a second through hole (5), one side of the two second through holes (5) close to each other is provided with an opening, a rotating shaft (8) is rotatably arranged between the inner wall of the front side and the inner wall of the rear side of the second through hole (5), an extruding mechanism which is obliquely arranged is fixedly sleeved on the rotating shaft (8), one side of the two extruding mechanisms close to each other extends into the clip-shaped mounting seat (100), the bottom of the extrusion mechanism is in rolling contact with the bottom of the inner side of the conveying belt (103), a rotary driving mechanism is fixedly sleeved on the rotary shaft (8), moving rods (10) are arranged in the second through holes (5), the rotary driving mechanism is embedded and fixed on the corresponding moving rods (10), a guide mechanism is fixedly connected to the right side of each moving rod (10), first grooves (9) are formed in the inner walls of the sides, far away from each other, of the two second through holes (5), the guide mechanism is fixedly connected with the inner walls of the tops and the bottoms of the corresponding first grooves (9), screw rods (14) are rotatably mounted on the inner walls of the sides, far away from each other, of the two second through holes (5), the moving rods (10) are sleeved on the corresponding screw rods (14) in a threaded manner, the bottoms of the screw rods (14) extend into the corresponding first through holes (3), the same linkage mechanism is fixedly sleeved on the two screw rods (14), a first motor (15) is fixedly connected to the inner wall of the top of the first through hole (3) on the right side, the top end of an output shaft of the first motor (15) is fixedly connected with the bottom end of the screw rod (14) positioned on the right side in the two screw rods (14).
2. The coal bunker feeding device of the thermal power plant as claimed in claim 1, wherein the extrusion mechanism comprises rotating rods (6) fixedly sleeved on the rotating shaft (8), the two rotating rods (6) are obliquely and symmetrically arranged, the ends of the two rotating rods (6) close to each other are rotatably provided with extrusion rollers (7), and the bottoms of the extrusion rollers (7) are in rolling contact with the inner bottoms of the conveying belts (103).
3. The coal bunker feeding device of the thermal power plant as claimed in claim 1, wherein the rotary driving mechanism comprises a gear fixedly sleeved on the rotating shaft (8), the gear is located at the front side of the corresponding rotating rod (6), one side of the two gears, which is far away from each other, is engaged with a rack (13), and the rack (13) is fixedly embedded on one side of the corresponding moving rod (10), which is close to the rotating shaft (8).
4. The coal bunker feeding device of the thermal power plant as claimed in claim 1, wherein the guiding mechanism comprises moving blocks (11), one side of each of the two moving blocks (11) close to each other is fixedly connected with the bottom of one side of each of the two moving rods (10) far away from each other, positioning rods (12) are fixedly connected between the inner walls of the top and the bottom of the first groove (9), and the moving blocks (11) are slidably sleeved on the corresponding positioning rods (12).
5. The coal bunker feeding device of the thermal power plant as claimed in claim 1, wherein the linkage mechanism comprises two chain wheels (16), the chain wheels (16) are located in the corresponding first through holes (3) and are fixedly sleeved on the screw rods (14), and the same chain (17) is in transmission connection with the two chain wheels (16).
6. The coal bunker feeding device of the thermal power plant as claimed in claim 1, wherein the front end and the rear side of the conveying roller (102) are fixedly connected with round shafts, the front inner wall and the rear inner wall of the mounting groove (101) are fixedly connected with first bearings, the inner sides of the inner rings of the first bearings are fixedly connected with the outer sides of the corresponding round shafts, and the front end of the round shaft positioned at the front left is fixedly connected with the rear end of the output shaft of the driving motor (104).
7. The coal bunker feeding device of the thermal power plant as claimed in claim 1, wherein a limiting block is fixedly connected to the top end of the moving rod (10), a threaded hole is formed in the top end of the moving rod (10), and the threaded hole is in threaded connection with the corresponding screw (14).
8. The coal bunker feeding device of the thermal power plant as claimed in claim 3, characterized in that the two moving rods (10) are provided with an embedded groove on the side close to each other, and the inner wall of the embedded groove is fixedly connected with the outer side of the corresponding rack (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122313083.8U CN215438288U (en) | 2021-09-24 | 2021-09-24 | Coal bunker feeding device of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122313083.8U CN215438288U (en) | 2021-09-24 | 2021-09-24 | Coal bunker feeding device of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215438288U true CN215438288U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122313083.8U Expired - Fee Related CN215438288U (en) | 2021-09-24 | 2021-09-24 | Coal bunker feeding device of thermal power plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN215438288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118479189A (en) * | 2024-07-12 | 2024-08-13 | 江苏欧瑞德阀门有限公司 | Roller mechanism for pipe valve production conveying device |
-
2021
- 2021-09-24 CN CN202122313083.8U patent/CN215438288U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118479189A (en) * | 2024-07-12 | 2024-08-13 | 江苏欧瑞德阀门有限公司 | Roller mechanism for pipe valve production conveying device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |