CN214897756U - Fireproof flame-retardant fire-resistant cable, fireproof coating and outer sheath layer manufacturing device - Google Patents
Fireproof flame-retardant fire-resistant cable, fireproof coating and outer sheath layer manufacturing device Download PDFInfo
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- CN214897756U CN214897756U CN202121069925.3U CN202121069925U CN214897756U CN 214897756 U CN214897756 U CN 214897756U CN 202121069925 U CN202121069925 U CN 202121069925U CN 214897756 U CN214897756 U CN 214897756U
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Abstract
The utility model relates to a device for manufacturing a fireproof flame-retardant fire-resistant cable, a fireproof coating and an outer sheath layer; the fireproof flame-retardant fire-resistant cable comprises: the cable-forming belting layer is coated with a fireproof coating outside the cable-forming belting layer and an outer sheath layer coated outside the fireproof coating. Fire prevention coating and oversheath layer making devices includes: the device comprises a controller, an electric take-up stand, a double-wheel tractor, an air cooler, an outer sheath layer coating device, a heating and drying device, a fireproof coating dip-coating device and an electric pay-off stand which are sequentially arranged from front to back.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to a fire-retardant fire resisting cable of fire prevention, fire protection coating and oversheath layer making devices.
Background
The structure of the cable can be understood from an insulated high voltage cable disclosed in utility model application No. 202021672716.3; the traditional cable has the defects of poor flame retardant property, easy combustion in case of fire, and incapability of effectively inhibiting and blocking flame, and after the cable is laid, the flame retardant property can be improved by manually coating a fireproof coating on the outer surface of the cable, but the coating efficiency is low, the coating quality is not stable enough, when the cable is pulled or trampled by people, the cable can rub with the ground, and the fireproof coating is easy to wear and lose efficacy; therefore, it is a problem to be solved urgently to design a fireproof flame-retardant fire-resistant cable, a fireproof coating and an outer sheath layer manufacturing device which have the advantages of good flame-retardant performance, high coating efficiency of the fireproof coating, stable coating quality and difficult abrasion and failure of the fireproof coating.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fire behaviour is better, and fire protection coating efficiency is higher, and coating quality is stable, fire protection flame retardant fireproof cable, fire protection coating and oversheath layer making devices that the difficult wearing and tearing of fire protection coating became invalid.
The utility model discloses a concrete technical scheme is:
a fire-resistant, flame-retardant, fire-resistant cable comprising: the cable-forming belting layer is coated outside the insulated wire cores, flame-retardant fillers are filled in the cable-forming belting layer and between the insulated wire cores, the flame-retardant fillers are coated on the fireproof coating outside the cable-forming belting layer, and the outer sheath layer is coated outside the fireproof coating.
Preferably, the cabling wrapping layer is formed by wrapping a high-strength glass fiber tape outside the insulating wire core in a double-layer overlapping manner; the fireproof coating is made of cable fireproof paint. The cable fireproof coating is a general product in the market.
Preferably, the lapping rate of the double-layer lapping and wrapping of the high-strength glass fiber tape is more than or equal to 40%.
Preferably, the insulated wire core comprises: the conductor, the refractory layer coated outside the conductor, the insulating layer coated outside the refractory layer; the conductor is a flexible wire formed by twisting a single wire or a plurality of wires; the fire-resistant layer is a phlogopite tape fire-resistant layer; the insulating layer is a polyvinyl chloride insulating layer or a cross-linked polyethylene insulating layer or a silicon rubber layer.
Preferably, the flame-retardant filler is an inorganic mineral paper rope filling rope.
Preferably, the outer sheath layer is a ceramic halogen-free low-smoke flame-retardant polyolefin layer.
A fire protection coating and oversheath layer making devices that is used for foretell fire prevention fire-retardant fire resisting cable includes: the controller comprises an electric take-up stand, a double-wheel tractor, an air cooler, an outer sheath layer coating device, a heating and drying device, a fireproof coating dip-coating device and an electric pay-off stand which are sequentially arranged from front to back; when the device for manufacturing the fireproof coating and the outer sheath layer is used, a cable coated with a cable wrapping layer on the outer side of the insulating wire core is discharged from the electric pay-off rack, is dip-coated with fireproof paint by a fireproof coating dip-coating device, is heated and dried by a heating and drying device, is coated with the outer sheath layer by an outer sheath layer coating device, is cooled by an air cooler and is wound on the electric take-up rack under the traction of a double-wheel tractor. The electric take-up stand, the double-wheel tractor, the air cooler and the electric pay-off stand are all in the prior art.
Preferably, the fire-retardant coating dip-coating device comprises: a coating groove with an installation plate at the upper end, two wire passing holes respectively arranged at the upper parts of two end plates of the coating groove, two guide wheel groups comprising a plurality of wire guide wheels pivoted with side plates of the coating groove, two fixing plates which are positioned between the two guide wheel groups and the two side ends of which are in one-to-one correspondence connection with the two side plates of the coating groove, two spherical through holes coaxially arranged on the two installation plates, two spherical core blocks which are provided with middle holes and are matched with the spherical through holes, a support plate which is arranged between the two installation plates and the two side ends of which are in one-to-one correspondence connection with the two side plates of the coating groove, a counter bore arranged at one end of the support plate, a through hole arranged at the bottom of the counter bore and communicated with the other end of the support plate, a circular guide rail which is coaxial with the spherical through hole and is connected with the bottom of the counter bore, a turntable which is provided with eccentric through holes which are not coaxial with the circular guide rail and is connected with a slide block of the circular guide rail, and a gear ring arranged at the outer side wall of the turntable, the device comprises a driving motor, a liquid level meter, a plurality of metering screw conveyors, blanking holes, gears, stirring shafts, a rotational viscometer, a stirring motor, a gear ring, a gear motor and a control device, wherein the driving motor, the liquid level meter and the plurality of metering screw conveyors are arranged on a mounting plate, the number of the blanking holes is the same as that of the metering screw conveyors, the blanking holes are communicated with the blanking ports of the metering screw conveyors in a one-to-one correspondence manner, the gears are connected with an output shaft of the driving motor and are meshed with the gear ring, the stirring shafts are provided with a plurality of stirring rods, two ends of the stirring shafts are pivoted with the lower parts of two end plates in a one-to-one correspondence manner, and the stirring motors are arranged on one end plate and are positioned on the lower side of the rotational viscometer; an output shaft of the stirring motor is connected with one end of the stirring shaft; the diameter of the rotary table is matched with that of the counter bore, and a sealing ring is arranged between the outer side wall of the rotary table and the side wall of the counter bore; the fixed plate is formed by connecting two semi-fixed plates which are arranged up and down.
Preferably, the outer sheath layer covering device comprises: the device comprises a machine body, an inner pipe, a convex ring, a mouth mold, a check ring, an outlet channel, a cable sheath thickness detector, a vertical electric linear guide rail and a transverse electric linear guide rail, wherein a feeding hole is formed in the upper side of the side wall of the machine body; the slide block of the transverse electric linear guide rail is connected with a supporting surface arranged at the lower end of the neck mold; the cable sheath thickness detector is an X-ray online thickness detector.
Preferably, the heating and drying device comprises: the electric heating device comprises a box body provided with a wire passing channel and supporting legs, an electric heater arranged in the box body, and a temperature controller arranged on the box body.
Compared with the prior art, the beneficial effects of the utility model are that: according to the fireproof flame-retardant fire-resistant cable, the fireproof coating is coated on the outer side of the cabling belt layer, the outer sheath layer is coated outside the fireproof coating, the outer sheath layer is a ceramic halogen-free low-smoke flame-retardant polyolefin layer, the fireproof layer is coated outside the conductor, the flame-retardant filler is arranged in the cabling belt layer and filled between the insulated wire cores, the fireproof coating and the outer sheath layer are prepared through the fireproof coating and outer sheath layer manufacturing device, the fireproof performance is good, the fireproof coating is high in coating efficiency and stable in coating quality, the fireproof coating is not prone to wear and failure, the integrity of a circuit can be maintained under the condition of fire, and the safe and normal operation of the function of a key emergency system is ensured; the system is widely used for fire alarm systems, smoke detection systems, emergency lighting power systems and public broadcasting systems in buildings such as large markets, hospitals, office places, stations, airports, civil houses and the like. The conductor is a flexible conductor formed by twisting a single conductor or a plurality of conductors according to the fixed laying and moving laying conditions; the fire-resistant layer adopts the auro-mica tape, has the characteristics of good fire resistance, acid and alkali resistance, corona resistance and radiation resistance, and has good flexibility and tensile strength; the belting layer adopts a high-strength glass fiber tape, has good adsorption effect on cable fireproof paint, enables a coating layer to be uniformly covered, and has the characteristics of high temperature resistance, fire prevention, flame retardance, corrosion resistance, aging resistance, weather resistance and the like; the fireproof coating is made of cable fireproof paint, meets the standard requirements of GB 28374-; the outer sheath layer is made of ceramic halogen-free low-smoke flame-retardant polyolefin, so that thermoplastic molding is facilitated, and the outer sheath layer is good in wear resistance and flame retardance. The driving motor of the fire-proof coating dip-coating device drives the turntable provided with the eccentric through hole which is not coaxial with the circular guide rail to rotate, so that the cable is twisted, and the effect of dip-coating the cable fire-proof coating on a cabling belting layer formed by winding high-strength glass fiber tapes in a stacked manner is favorably improved; the plurality of metering screw conveyors are beneficial to metering and adding the components of the cable fireproof coating according to set amount; the stirring motor drives the stirring shaft and the stirring rod to rotate, so that the cable fireproof coating is favorably and uniformly stirred; the liquid level meter is beneficial to detecting the liquid level of the cable fireproof coating; the rotational viscometer is beneficial to detecting the viscosity of the cable fireproof coating; and a sealing ring is arranged between the outer side wall of the rotary table and the side wall of the counter bore, so that the circular guide rail is protected. Extruding the outer sheath layer material from a feed port of the outer sheath layer coating device by an extruder, coating the outer sheath layer material outside the cable with the heated and dried fireproof coating through a runner and an outlet channel to form the outer sheath layer, and moving forwards through a cable through hole of an X-ray online thickness detector which detects the thickness of the outer sheath layer; the X-ray online thickness detector transmits a signal to the controller when detecting that the outer sheath layer is eccentric, the controller controls the vertical electric linear guide rail and the horizontal electric linear guide rail to be matched with each other to drive the neck mold to move along the radial direction according to the eccentric direction and the eccentric value of the outer sheath layer, the eccentric degree of the outer sheath layer is automatically and timely adjusted, the eccentric degree of the outer sheath layer is smaller than a set value, and the outer sheath layer coating device can find out that the outer sheath layer is eccentric timely, and the eccentric degree adjustment efficiency and the adjustment precision are high. The temperature control instrument of the heating and drying device is beneficial to controlling the heating and drying temperature.
Drawings
FIG. 1 is a schematic view of a construction of a fire-resistant, flame-retardant, fire-resistant cable;
FIG. 2 is a schematic view of a seat-making means of the flame retardant coating and outer jacket;
FIG. 3 is a schematic structural diagram of a fire retardant coating dip coating apparatus;
FIG. 4 is a schematic view of an outer sheath covering device;
fig. 5 is a schematic structural view of the heating and drying apparatus.
In the figure: the device comprises a controller 1, an electric take-up stand 2, a double-wheel tractor 3, an air cooler 4, an outer sheath layer coating device 5, a feeding hole 51, a machine body 52, a middle inner hole 53, an inner pipe 54, a convex ring 55, a convex ring 56, a mouth mold 57, a retainer ring 58, an outlet channel 59, a flow channel 510, a cable sheath thickness detector 511, a vertical electric linear guide rail 512, a transverse electric linear guide rail 513, a supporting surface 514, a heating and drying device 6, a wire passing channel 61, a supporting leg 62, a box body 63, an electric heater 64, a temperature controller 65, a fireproof coating dip-coating device 7, a mounting plate 71, a coating groove 72, an end plate 73, a wire passing hole 74, a side plate 75, a wire guide wheel 76, a fixing plate 77, a spherical through hole 78, a middle hole 79, a spherical pellet 710, a supporting plate 711, a counter bore 712, a wire passing hole 713, a circular guide rail 714, an eccentric through hole 715, a turntable 716, a gear 717, a driving motor 718, a liquid level meter 719, a metering screw conveyor 720, the device comprises a blanking hole 721, a gear 722, a stirring rod 723, a stirring shaft 724, a rotational viscometer 725, a stirring motor 726, a sealing ring 727, an electric pay-off rack 8, a cable 9, an insulating wire core 10, a cabling tape layer 11, a flame-retardant filler 12, a fireproof coating 13, an outer sheath layer 14, a conductor 15, a fireproof layer 16 and an insulating layer 17.
Detailed Description
The invention will be further described with reference to the drawings.
As shown in fig. 1: a fire-resistant, flame-retardant, fire-resistant cable comprising: three insulation core 10 along the circumference equipartition, the stranding band layer 11 of cladding outside insulation core 10, arrange in stranding band layer 11 and fill in the fire-retardant filler 12 between insulation core 10, coat in the fire protection coating 13 in the stranding band layer 11 outside, the oversheath layer 14 of cladding outside fire protection coating 13.
The cabling wrapping layer 11 is formed by wrapping a high-strength glass fiber tape outside the insulated wire core 10 in a double-layer overlapping manner; the material of the fireproof coating 13 is cable fireproof paint.
The covering rate of the high-strength glass fiber tape double-layer overlapping wrapping is equal to 40%.
The insulated wire core 10 comprises: the cable comprises a conductor 15, a flame retardant coating 16 coated outside the conductor 15, and an insulating layer 17 coated outside the flame retardant coating 16; the conductor 15 is a flexible wire formed by twisting a single wire or a plurality of wires; the fire-resistant layer 16 is a phlogopite tape fire-resistant layer 16; the insulating layer 17 is a polyvinyl chloride insulating layer or a cross-linked polyethylene insulating layer or a silicon rubber layer. In this embodiment, the conductor 15 is a flexible wire formed by twisting a plurality of wires, and the insulating layer 17 is a crosslinked polyethylene insulating layer.
The flame-retardant filler 12 is an inorganic mineral paper rope filling rope.
The outer sheath layer 14 is a ceramic halogen-free low-smoke flame-retardant polyolefin layer.
As shown in fig. 2, 3, 4, and 5: a fire-retardant coating and oversheath layer system seat device that is used for foretell fire-retardant fire resisting cable of fire prevention includes: the device comprises a controller 1, an electric take-up stand 2, a double-wheel tractor 3, an air cooler 4, an outer sheath layer coating device 5, a heating and drying device 6, a fireproof coating dip-coating device 7 and an electric pay-off stand 8 which are sequentially arranged from front to back; when the fireproof coating and outer sheath layer seat manufacturing device is used, a cable 9 coated with a cabling wrapping layer 11 on the outer side of an insulating wire core 10 is discharged from an electric pay-off rack 8, is coated with fireproof paint in a dip-coating mode through a fireproof coating dip-coating device 7, is heated and dried through a heating and drying device 6, is coated with an outer sheath layer 14 through an outer sheath layer coating device 5, and is cooled through an air cooler 4 and then is drawn by a double-wheel type tractor 3 to be wound on an electric winding frame 2.
The fire-retardant coating dip-coating device 7 comprises: a coating groove 72 with an upper end provided with a mounting plate 71, two wire passing holes 74 respectively arranged at the upper parts of two end plates 73 of the coating groove 72, two guide wheel sets comprising a plurality of wire guide wheels 76 pivoted with the side plates 75 of the coating groove 72 through bearings, two fixing plates 77 which are positioned between the two guide wheel sets and two side ends of which are in one-to-one threaded connection with the two side plates 75 of the coating groove 72, two spherical through holes 78 coaxially arranged on the two mounting plates 71, two spherical core blocks 710 which are provided with middle holes 79 and are matched with the spherical through holes 78, a support plate 711 which is arranged between the two mounting plates 71 and two side ends of which are in one-to-one threaded connection with the two side plates 75 of the coating groove 72, a counter bore 712 arranged at one end of the support plate 711 and a through hole 713 which is arranged at the bottom surface of the counter bore 712 and is communicated with the other end of the support plate 711, a circular guide rail 714 which is coaxial with the spherical through hole 78 and is in one-to-threaded connection with the bottom surface of the counter bore 712, a turntable 716 which is provided with an eccentric through hole 715 which is not coaxial with the circular guide 714 and is in threaded connection with a slider of the circular guide 714, a gear ring 717 arranged on the outer side of the rotary disk 716, a driving motor 718, a liquid level meter 719, a plurality of metering screw conveyors 720 arranged on the mounting plate 71, a plurality of feed holes 721 which are the same as the metering screw conveyors 720 in number and are communicated with the feed openings of the metering screw conveyors 720 in a one-to-one correspondence manner, a gear 722 which is connected with an output shaft key of the driving motor 718 and is meshed with the gear ring 717, a plurality of stirring rods 723 which are provided with stirring shafts 724 of which two ends are pivoted with the lower parts of the two end plates 73 in a one-to-one correspondence manner through bearings, a rotational viscometer 725 arranged on one end plate 73, and a stirring motor 726 positioned on the lower side of the rotational viscometer 725; an output shaft of the stirring motor 726 is connected with one end key of the stirring shaft 724; the diameter of the rotary disk 716 is in clearance fit with the diameter of the counterbore 712, and a sealing ring 727 is arranged between the outer side periphery of the rotary disk 716 and the side periphery of the counterbore 712; the fixing plate 77 is formed by screwing two half fixing plates disposed up and down.
The outer sheath layer coating device 5 comprises: the upper side of the side wall is provided with a machine body 52 of a feeding hole 51 used for being communicated with an extrusion opening of an extruder, an inner pipe 54 fixedly arranged in the machine body 52 and provided with a middle inner hole 53, a convex ring 55 arranged at the front end of the machine body 52, a mouth mold 57 arranged in the convex ring 55 and provided with a convex ring 56 with the outer diameter smaller than the inner diameter of the convex ring 55 at the rear end, a retainer ring 58 used for blocking the front end of the convex ring 56 and screwed with the front end of the convex ring 55, an outlet channel 59 arranged in the mouth mold 57, a flow channel 510 arranged between the inner pipe 54 and the machine body 52 and respectively communicated with the feeding hole 51 and the outlet channel 59, a cable sheath thickness detector 511 arranged at the front side of the mouth mold 57, a vertical electric linear guide rail 512 and a horizontal electric linear guide rail 513 screwed with a slide block of the vertical electric linear guide rail 512; a sliding block of the transverse electric linear guide 513 is in threaded connection with a supporting surface 514 arranged at the lower end of the neck mold 57; the cable sheath thickness detector 511 is an X-ray on-line thickness detector.
The heating and drying device 6 comprises: a box 63 provided with a wire passage 61 and a support 62, an electric heater 64 installed in the box 63, and a temperature controller 65 installed on the box 63.
The electric take-up stand 2, the double-wheel tractor 3, the air cooler 4, the electric pay-off stand 8, the driving motor 718, the liquid level meter 719, the metering screw conveyor 720, the rotational viscometer 725, the stirring motor 726, the cable sheath thickness detector 511, the vertical electric linear guide rail 512, the horizontal electric linear guide rail 513, the electric heater 64 and the controller are respectively and electrically connected with the controller 1.
In addition to the above embodiments, the technical features or technical data of the present invention can be selected and combined again within the scope disclosed in the claims and the specification of the present invention to constitute new embodiments, which can be realized by those skilled in the art without creative efforts, and therefore, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and within the protection scope of the present invention.
Claims (10)
1. A fire-resistant, flame-retardant, fire-resistant cable comprising: at least three insulation core along circumference distribution, characterized by, fire prevention fire-retardant fireproof cable still include: the stranding band layer coated outside the insulated wire core is filled with flame-retardant filler between the insulated wire cores in the stranding band layer, coated on the fireproof coating outside the stranding band layer and coated on the outer jacket layer outside the fireproof coating.
2. The fireproof, flame-retardant and fire-resistant cable according to claim 1, wherein the cabling tape layer is formed by wrapping a high-strength glass fiber tape outside the insulating wire core in a double-layer overlapping manner; the fireproof coating is made of cable fireproof paint.
3. The fireproof flame-retardant fire-resistant cable according to claim 2, wherein the lapping rate of the double-layer lapping of the high-strength glass fiber tape is greater than or equal to 40%.
4. A fire-resistant, fire-retardant and fire-resistant cable as claimed in claim 1, 2 or 3, wherein said insulated wire core comprises: the conductor, the refractory layer coated outside the conductor, the insulating layer coated outside the refractory layer; the conductor is a flexible wire formed by twisting a single wire or a plurality of wires; the fire-resistant layer is a phlogopite tape fire-resistant layer; the insulating layer is a polyvinyl chloride insulating layer or a cross-linked polyethylene insulating layer or a silicon rubber layer.
5. A fire-resistant, fire-retardant and fire-resistant cable as claimed in claim 1, 2 or 3, wherein said fire-retardant filler is an inorganic mineral paper rope filler rope.
6. A fire-resistant, flame-retardant and fire-resistant cable as claimed in claim 1, 2 or 3, wherein said outer sheath layer is a ceramic halogen-free low-smoke flame-retardant polyolefin layer.
7. A device for manufacturing a fireproof coating and an outer sheath layer of the fireproof, flame-retardant and fire-resistant cable according to claim 2, comprising: the controller, characterized by, fire protection coating and oversheath layer making devices still include: the device comprises an electric take-up stand, a double-wheel tractor, an air cooler, an outer sheath layer coating device, a heating and drying device, a fireproof coating dip-coating device and an electric pay-off stand which are sequentially arranged from front to back.
8. The apparatus for manufacturing a fire retardant coating and an outer sheath according to claim 7, wherein the apparatus for dip-coating a fire retardant coating comprises: a coating groove with an upper end provided with a mounting plate, two wire passing holes respectively arranged at the upper parts of two end plates of the coating groove, two guide wheel groups comprising a plurality of wire guide wheels pivoted with side plates of the coating groove, two fixing plates positioned between the two guide wheel groups and connected with the two side plates of the coating groove in a one-to-one correspondence manner, two spherical through holes respectively arranged on the two mounting plates, two spherical pellet blocks provided with middle holes and matched with the spherical through holes, a support plate arranged between the two mounting plates and connected with the two side plates of the coating groove in a one-to-one correspondence manner, a counter bore arranged at one end of the support plate, a through hole arranged at the bottom of the counter bore and communicated with the other end of the support plate, a circular guide rail coaxial with the spherical through hole and connected with the bottom of the counter bore, a turntable provided with an eccentric through hole different from the axis of the circular guide rail and connected with a slide block of the circular guide rail, a gear ring arranged at the outer side wall of the turntable, a driving motor arranged on the mounting plate, The device comprises a liquid level meter, a plurality of metering screw conveyors, blanking holes, gears, stirring shafts, a rotational viscometer arranged on one end plate and a stirring motor positioned on the lower side of the rotational viscometer, wherein the number of the blanking holes is the same as that of the metering screw conveyors and is communicated with the blanking ports of the metering screw conveyors in a one-to-one correspondence manner; an output shaft of the stirring motor is connected with one end of the stirring shaft; the diameter of the rotary table is matched with that of the counter bore, and a sealing ring is arranged between the outer side wall of the rotary table and the side wall of the counter bore; the fixed plate is formed by connecting two semi-fixed plates which are arranged up and down.
9. The apparatus for forming a fire retardant coating and an outer jacket layer as claimed in claim 7, wherein said means for covering said outer jacket layer comprises: the device comprises a machine body, an inner pipe, a convex ring, a mouth mold, a check ring, an outlet channel, a cable sheath thickness detector, a vertical electric linear guide rail and a transverse electric linear guide rail, wherein a feeding hole is formed in the upper side of the side wall of the machine body; the slide block of the transverse electric linear guide rail is connected with a supporting surface arranged at the lower end of the neck mold; the cable sheath thickness detector is an X-ray online thickness detector.
10. The apparatus for manufacturing a fire-retardant coating and an outer sheath according to claim 7, 8 or 9, wherein the heating and drying apparatus comprises: the electric heating device comprises a box body provided with a wire passing channel and supporting legs, an electric heater arranged in the box body, and a temperature controller arranged on the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121069925.3U CN214897756U (en) | 2021-05-18 | 2021-05-18 | Fireproof flame-retardant fire-resistant cable, fireproof coating and outer sheath layer manufacturing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121069925.3U CN214897756U (en) | 2021-05-18 | 2021-05-18 | Fireproof flame-retardant fire-resistant cable, fireproof coating and outer sheath layer manufacturing device |
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| CN214897756U true CN214897756U (en) | 2021-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678162A (en) * | 2022-04-06 | 2022-06-28 | 深圳市金环宇电线电缆有限公司 | Environment-friendly fire-resistant signal cable |
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2021
- 2021-05-18 CN CN202121069925.3U patent/CN214897756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678162A (en) * | 2022-04-06 | 2022-06-28 | 深圳市金环宇电线电缆有限公司 | Environment-friendly fire-resistant signal cable |
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