阅读说明：本技术 一种无纺毡加工用预氧炉、加工设备及加工工艺 (Pre-oxidation furnace, processing equipment and processing technology for processing non-woven felt ) 是由 马翔翔 肖孝天 卜宇轩 陈强 牛玉双 杨培 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种无纺毡加工用预氧炉、加工设备及加工工艺,涉及高温材料技术领域；无纺毡加工设备包括依照无纺毡的加工顺序依次设置的浸泡池、挤干机、烘干机、集烟罩、风机和环保设备；预氧炉包括炉膛、蒸汽管道、传输辊、输送机构、驱动机构和支撑架；炉膛贯穿预氧炉,炉膛内底层上铺设有一层蒸汽管道和支撑架；蒸汽管道上有多个等间距平行间隔排布的传输辊,所述传输辊的两端都和炉膛的侧壁转动固定；输送机构包括环形输送带,输送带套设在输送辊上,驱动机构驱动输送辊转动带动输送带转动；所述预氧炉炉体沿着所述炉膛的长度方向加长；本发明提供了一种可以缩短预氧化处理时间,加快无纺毡的生产速度的无纺毡加工用预氧炉及加工设备。(The invention discloses a pre-oxidation furnace, processing equipment and a processing technology for processing a non-woven felt, and relates to the technical field of high-temperature materials; the non-woven felt processing equipment comprises a soaking tank, a squeezing machine, a dryer, a smoke collecting hood, a fan and environmental protection equipment which are sequentially arranged according to the processing sequence of the non-woven felt; the pre-oxidation furnace comprises a hearth, a steam pipeline, a transmission roller, a conveying mechanism, a driving mechanism and a support frame; the hearth penetrates through the pre-oxidation furnace, and a layer of steam pipeline and a support frame are laid on the bottom layer in the hearth; the steam pipeline is provided with a plurality of transmission rollers which are arranged in parallel at intervals at equal intervals, and both ends of each transmission roller are rotationally fixed with the side wall of the hearth; the conveying mechanism comprises an annular conveying belt, the conveying belt is sleeved on the conveying roller, and the driving mechanism drives the conveying roller to rotate so as to drive the conveying belt to rotate; the pre-oxidation furnace body is lengthened along the length direction of the hearth; the invention provides a preoxidation furnace for processing a non-woven felt and processing equipment, which can shorten the preoxidation treatment time and accelerate the production speed of the non-woven felt.)

1. The utility model provides a non-woven felt processing is with oxygen stove in advance which characterized in that: comprises a hearth (41), a steam pipeline (42), a conveying roller (43), a conveying mechanism (44) and a driving mechanism; the hearth (41) penetrates through the pre-oxidation furnace (4) to form a pre-oxidation furnace inlet (45) and a pre-oxidation furnace outlet (46), and a layer of steam pipeline (42) is laid on the bottom layer in the hearth (41); the steam pipeline (42) is provided with a plurality of conveying rollers (43) which are arranged in parallel at equal intervals, and both ends of each conveying roller (43) are rotationally fixed with the side wall of the hearth (41); the driving mechanism drives the conveying mechanism (44) to rotate; the conveying mechanism (44) comprises an annular conveying belt (441), and the conveying roller (43) is positioned between the upper belt and the lower belt of the conveying belt (441); the furnace body of the pre-oxidation furnace (4) is lengthened along the length direction of the hearth (41);

steam conduit (42) include lower floor's pipeline (421), upper pipeline (422) and stand pipeline (423), and is a plurality of lower floor's pipeline (421) equidistant parallel arrangement is in on the bottom in furnace (41), stand pipeline (423) one end with lower floor's pipeline (421) perpendicular intercommunication, the other end with upper pipeline (422) perpendicular intercommunication, it is a plurality of upper pipeline (422) equidistant parallel arrangement, it is a plurality of upper pipeline (422) and a plurality of lower floor's pipeline (421) are perpendicular, the steam hole has been seted up on upper pipeline (422), the steam hole orientation conveyer belt (441).

2. The pre-oxidizer of claim 1, wherein: the pre-oxidation furnace (4) further comprises a support frame (47), the support surface of the support frame (47) is higher than the upper layer pipeline (422) and provides support for the lower belt of the conveying belt (441); the supporting frame (47) comprises supporting rods (471) and supporting columns (472), one ends of the supporting columns (472) are vertically fixed with the lower-layer pipeline (421), the other ends of the supporting columns are vertically fixed with the supporting rods (471), and the supporting rods (471) are arranged in parallel at equal intervals.

3. The pre-oxidizer of claim 1, wherein: the conveying mechanism (44) further comprises a driving roller (442) and a driven roller (443), the conveying belt (441) is an annular belt and is sleeved on the driving roller (442) and the driven roller (443), and the driving mechanism drives the driving roller (442) to rotate and drives the conveying belt (441) to rotate.

4. The pre-oxidizer of claim 3, wherein: chains (445) are arranged on two sides of the conveying belt (441), chain wheels (444) are respectively arranged at two ends of the driving roller (442), the driven roller (443) and the conveying roller (43), and the chains (445) are in meshing transmission fit with the chain wheels (444).

5. The pre-oxidation oven for processing the non-woven felt according to claim 4, wherein: the conveying belt (441) is provided with a plurality of steam holes (446), and the steam holes (446) are uniformly distributed on the conveying belt (441) at equal intervals.

6. The pre-oxidizer of claim 5, wherein: the steam pipeline (42), the conveying roller (43), the conveying mechanism (44) and the supporting frame (47) are all made of stainless steel.

7. A nonwoven mat processing apparatus using the pre-oxidizer of any of claims 1-6, wherein: the processing equipment also comprises a soaking pool (1), a squeezing machine (2), a dryer (3), a smoke collecting hood (5), a fan (6) and environmental protection equipment (7); the soaking tank (1), the squeezing machine (2), the dryer (3) and the pre-oxidation furnace (4) are sequentially arranged according to the processing sequence of the non-woven felt (8); the collection petticoat pipe (5) have two, place respectively in oxygen stove entry (45) department in advance with oxygen stove export (46) department in advance, two the gas outlet of collection petticoat pipe (5) all with the entry linkage of fan (6), the export of fan (6) with the entry linkage of environmental protection equipment (7).

8. The nonwoven mat processing apparatus of claim 7, wherein: the two sides of the soaking pool (1) along the running direction of the non-woven felt (8) are provided with slideways (11), and a portal frame (12) is in sliding fit with the slideways (11); and a lifting appliance (13) is arranged on the portal frame (12).

9. The nonwoven mat processing apparatus of claim 7, wherein: the environment-friendly equipment (7) comprises a spray tower (71), an incinerator (72) and a plasma tower (73), wherein the fan (6), the spray tower (71), the incinerator (72) and the plasma tower (73) are sequentially arranged according to the treatment sequence of flue gas.

10. The processing technology of the non-woven felt is characterized by comprising the following steps:

s1 the non-woven felt (8) is hung on a portal frame (12) through a hanger (13), the portal frame (12) slides along a slideway (11), and the non-woven felt (8) enters the soaking pool (1) and is fully soaked;

s2 extruding most of water from the fully soaked non-woven felt (8) through a squeezing machine (2);

s3, extruding the non-woven felt (8) with most moisture to enter a dryer (3) for drying;

the non-woven felt (8) dried by the S4 enters a pre-oxidation furnace (4) for pre-oxidation treatment;

s5 the flue gas generated in the pre-oxidation furnace (4) is absorbed by the fume collecting hood (5) through the fan (6);

s6 the flue gas absorbed by the fan (6) is transported to the environmental protection equipment (7) through a pipeline, firstly enters the spray tower (71) to cool and deposit the water vapor in the flue gas, then enters the incinerator (72) to be incinerated, enters the plasma tower (73) after being incinerated, and finally the flue gas which meets the environmental protection requirement after being treated is discharged to the atmosphere from the plasma tower (73).

Technical Field

The invention relates to the technical field of high-temperature materials, in particular to a pre-oxidation furnace, processing equipment and a processing technology for processing a non-woven felt.

Background

The carbon fiber is a novel adsorption material which has better performance than powdered activated carbon and granular carbon and is developed in the 60 s of the 20 th century; the material has the following characteristics: narrow pore size distribution, rich micropores, large specific surface area, unique surface chemical property, high adsorption and desorption speed and the like. Due to the characteristics, the activated carbon fiber is rapidly developed in recent years, is widely applied to various fields, and particularly plays an irreplaceable role in the field of environmental protection and energy conservation; in recent years, with the rapid development of the photovoltaic industry, the demand of monocrystalline silicon is greatly improved, and in the aspect of monocrystalline silicon production, carbon fibers are indispensable heat-insulating materials for the production of the monocrystalline silicon; the heat-insulating and energy-saving heat-insulating plate has excellent characteristics in both heat-insulating and energy-saving aspects.

One of the most important steps in carbon fiber manufacturing is pre-oxidation treatment, wherein pre-oxidation is an important intermediate process for producing carbon fibers and plays a role of a bridge for converting precursor fibers into the carbon fibers; the pre-oxidation not only controls the quality of the carbon fiber, but also controls the yield of the carbon fiber, the time is a main factor for controlling the yield by pre-oxidation, if the pre-oxidation time is reduced, the yield of the same production line is greatly increased, and the production cost is greatly reduced; therefore, the present invention requires shortening the pre-oxidation time while ensuring quality, thereby increasing the production speed of the nonwoven mat.

Publication No. CN102587066A discloses a production process of viscose-based graphitized carbon fiber felt, wherein the fiber felt disclosed in the patent is pulled into a pre-oxidation furnace during pre-oxidation treatment, and the fiber felt is subjected to a larger pulling force at the time, which causes the non-woven felt to become narrow during transmission, thereby reducing the quality of the non-woven felt, and meanwhile, the narrowing of the non-woven felt indirectly causes the non-woven felt to become longer, thereby further increasing the pre-oxidation time and reducing the production efficiency; in addition, the production process disclosed in the patent does not involve an environmental treatment step for fumes generated when the non-woven felt is subjected to pre-oxidation treatment.

Disclosure of Invention

The invention aims to solve the technical problem of how to shorten the pre-oxidation treatment time and accelerate the production speed of the non-woven felt.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention discloses a pre-oxidation furnace for processing non-woven felts, which comprises a hearth, a steam pipeline, a transmission roller, a conveying mechanism and a driving mechanism, wherein the steam pipeline is arranged on the hearth; the hearth penetrates through the pre-oxidation furnace to form a pre-oxidation furnace inlet and a pre-oxidation furnace outlet, and a layer of steam pipeline is laid on the bottom layer in the hearth; the steam pipeline is provided with a plurality of transmission rollers which are arranged in parallel at intervals at equal intervals, and both ends of each transmission roller are rotationally fixed with the side wall of the hearth; the driving mechanism drives the conveying mechanism to rotate; the conveying mechanism comprises an annular conveying belt, and the conveying roller is positioned between an upper belt and a lower belt of the conveying belt; the pre-oxidation furnace body is lengthened along the length direction of the hearth;

steam conduit includes lower floor's pipeline, upper pipeline and stand pipeline, and is a plurality of equidistant parallel arrangement of lower floor's pipeline is in on the bottom in the furnace, stand pipeline one end with the perpendicular intercommunication of lower floor's pipeline, the other end with the perpendicular intercommunication of upper pipeline is a plurality of equidistant parallel arrangement of upper pipeline is a plurality of upper pipeline and a plurality of lower floor's pipeline is perpendicular, the steam hole has been seted up on the upper pipeline, the steam hole orientation the conveyer belt.

The pre-oxidation furnace is internally provided with a plurality of transmission rollers which are arranged in parallel at intervals at equal intervals, the transmission rollers are positioned between an upper belt and a lower belt of the conveyer belt, when the pre-oxidation furnace works, the driving mechanism drives the transmission rollers to rotate so as to drive the conveyer belt to rotate, and the non-woven felt placed on the conveyer belt is driven to rotate along with the rotation of the conveyer belt; the original pre-oxidation furnace is only paved with a steam pipeline, and the non-woven felt is directly pulled out, so that the non-woven felt is subjected to a large pulling force during transmission, and the non-woven felt is narrowed during transmission; the existing transmission roller, the conveying mechanism and the driving mechanism are added, and the previous traction product is changed into mesh belt conveying, so that the pulling force generated on the non-woven felt during the transmission is reduced, and the quality of the non-woven felt is effectively improved; meanwhile, the narrowing of the non-woven felt can indirectly lead to the lengthening of the non-woven felt, further increase the pre-oxidation time and reduce the production efficiency; meanwhile, the length of the furnace body of the pre-oxidation furnace is lengthened, so that the pre-oxidation time of the product in the furnace body can be prolonged, the total running speed of the furnace body can be increased, and the production efficiency is improved; a layer of steam pipeline laid on the inner layer of the hearth of the pre-oxidation furnace has a cooling effect on the non-woven felt, and the non-woven felt is prevented from spontaneous combustion in the pre-oxidation furnace.

Steam pipeline's lower floor pipeline lets in steam, and steam passes through the stand pipeline and gets into the upper pipeline in, and the steam hole blowout of seting up on the pipeline of follow upper strata again, steam jet spouts the non-woven felt to the conveyer belt promptly, and spun steam is to the non-woven felt cooling, and simultaneously, oxygen in the spun steam can also effectual discharge furnace to avoid the non-woven felt to go out the stove back because of the high spontaneous combustion of temperature.

Preferably, the pre-oxidation furnace further comprises a support frame, and the support surface of the support frame is higher than the upper layer pipeline and provides support for the lower belt of the conveying belt; the support frame includes bracing piece and support post, and is a plurality of support post one end with lower floor's pipeline vertical fixation, the other end with bracing piece vertical fixation, it is a plurality of the bracing piece is equidistant parallel arrangement.

Preferably, the conveying mechanism further comprises a driving roller and a driven roller, the conveying belt is an annular net belt sleeved on the driving roller and the driven roller, and the driving mechanism drives the driving roller to rotate to drive the conveying belt to rotate.

Preferably, chains are arranged on two sides of the conveying belt, chain wheels are respectively arranged at two ends of the driving roller, the driven roller and the transmission roller, and the chains are in meshing transmission fit with the chain wheels.

Preferably, the conveying belt is provided with a plurality of steam holes, and the plurality of steam holes are uniformly distributed on the conveying belt at equal intervals.

Preferably, the steam pipeline, the conveying roller, the conveying mechanism and the support frame are all made of stainless steel.

The invention also provides non-woven felt processing equipment, which further comprises a soaking pool, a squeezing machine, a dryer, a smoke collecting hood, a fan and environment-friendly equipment; the soaking tank, the squeezing machine, the dryer and the pre-oxidation furnace are sequentially arranged according to the processing sequence of the non-woven felt; the collection petticoat pipe has two, places respectively oxygen stove entrance with oxygen stove exit in advance, two the gas outlet of collection petticoat pipe all with the entry linkage of fan, the export of fan with environmental protection equipment's entry linkage.

Preferably, the two sides of the soaking pool along the running direction of the non-woven felt are provided with slideways, and the portal frame is in sliding fit with the slideways; and a lifting appliance is installed on the portal frame.

Preferably, the environmental protection equipment comprises a spray tower, an incinerator and a plasma tower, wherein the fan, the spray tower, the incinerator and the plasma tower are sequentially arranged according to the treatment sequence of the flue gas.

When the steam pipeline, the transmission roller, the conveying mechanism and the support frame in the hearth are made of stainless steel, after the furnace body meets the requirements, the phosphorus-free non-woven felt can be produced, namely, when the non-woven felt is placed into the soaking tank in the first step, the flame retardant in the soaking tank can be changed into the phosphorus-free flame retardant, so that harmful smoke cannot be generated in the pre-oxidized non-woven felt in the pre-oxidation furnace, and final environmental protection equipment is further saved.

The invention also provides a processing technology of the non-woven felt, which comprises the following steps:

s1 the non-woven felt is hung on a portal frame through a hanger, the portal frame slides along a slideway, and the non-woven felt enters a soaking pool and is fully soaked;

s2 extruding most of water from the fully soaked non-woven felt through a squeezing machine;

s3, extruding the non-woven felt with most moisture into a dryer for drying;

the non-woven felt dried by S4 enters a pre-oxidation furnace for pre-oxidation treatment;

s5, absorbing the smoke generated in the pre-oxidation furnace by the smoke collecting hood through a fan;

s6 the flue gas absorbed by the fan is transported to the environmental protection equipment through a pipeline, and firstly enters a spray tower to cool and deposit the water vapor in the flue gas, then enters an incinerator for incineration treatment, and then enters a plasma tower, and finally the treated flue gas which meets the environmental protection requirement is discharged to the atmosphere from the plasma tower.

Therefore, the invention has the advantages that:

1. the pre-oxidation furnace is internally provided with a plurality of transmission rollers which are arranged in parallel at intervals at equal intervals, the transmission rollers are positioned between an upper belt and a lower belt of the conveyer belt, when the pre-oxidation furnace works, the driving mechanism drives the transmission rollers to rotate so as to drive the conveyer belt to rotate, and the non-woven felt placed on the conveyer belt is driven to rotate along with the rotation of the conveyer belt; the original pre-oxidation furnace is only paved with a steam pipeline, and the non-woven felt is directly pulled out, so that the non-woven felt is subjected to a large pulling force during transmission, and the non-woven felt is narrowed during transmission; the existing transmission roller, the conveying mechanism and the driving mechanism are added, and the previous traction product is changed into mesh belt conveying, so that the pulling force generated on the non-woven felt during the transmission is reduced, and the quality of the non-woven felt is effectively improved; meanwhile, the narrowing of the non-woven felt can indirectly lead to the lengthening of the non-woven felt, further increase the pre-oxidation time and reduce the production efficiency; meanwhile, the length of the furnace body of the pre-oxidation furnace is lengthened, so that the pre-oxidation time of the product in the furnace body can be prolonged, the total running speed of the furnace body can be increased, and the production efficiency is improved; a layer of steam pipeline laid on the inner layer of the hearth of the pre-oxidation furnace has a cooling effect on the non-woven felt, and the non-woven felt is prevented from spontaneous combustion in the pre-oxidation furnace.

2. Steam pipeline's lower floor pipeline lets in steam, and steam passes through the stand pipeline and gets into the upper pipeline in, and the steam hole blowout of seting up on the pipeline of follow upper strata again, steam jet spouts the non-woven felt to the conveyer belt promptly, and spun steam is to the non-woven felt cooling, and simultaneously, oxygen in the spun steam can also effectual discharge furnace to avoid the non-woven felt to go out the stove back because of the high spontaneous combustion of temperature.

3. When the steam pipeline, the transmission roller, the conveying mechanism and the support frame in the hearth are made of stainless steel, after the furnace body meets the requirements, the phosphorus-free non-woven felt can be produced, namely, when the non-woven felt is placed into the soaking tank in the first step, the flame retardant in the soaking tank can be changed into the phosphorus-free flame retardant, so that harmful smoke cannot be generated in the pre-oxidized non-woven felt in the pre-oxidation furnace, and final environmental protection equipment is further saved.

4. According to the invention, the supporting surface of the supporting frame arranged on the steam pipeline is higher than that of the upper-layer pipeline, so that the supporting surface of the supporting frame provides support for the lower belt of the conveying belt; meanwhile, a plurality of transmission rollers are arranged between the driving roller and the driven roller and between the upper belt and the lower belt of the conveying belt, and the transmission rollers also provide support for the conveying belt.

Drawings

FIG. 1 is a schematic front view of a nonwoven mat processing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic left side view of a soaking tank 1 of a non-woven felt processing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic left side view of a pre-oxidation oven for processing a non-woven mat according to an embodiment of the present invention;

FIG. 4 is a schematic front view of a steam pipe 42 and a support frame 47 in a pre-oxidation oven for processing a non-woven felt according to an embodiment of the present invention;

FIG. 5 is a schematic top view of a steam duct 42 and a support frame 47 in a pre-oxidizer for nonwoven mat processing according to an embodiment of the present invention;

fig. 6 is a schematic front view of a conveying structure 44 and a conveying roller 43 applied to a steam pipe 42 and a supporting frame 47 in a pre-oxidation oven for nonwoven felt processing according to an embodiment of the present invention.

The reference numbers in the figures illustrate: 1. a soaking pool; 11. a slideway; 12. a gantry; 13. a spreader; 2. A squeezing machine; 3. a dryer; 4. a pre-oxidation furnace; 41. a hearth; 42. a steam line; 421. a lower layer pipeline; 422. an upper layer of piping; 423. a column pipe; 43. a transfer roller; 44. a conveying mechanism; 441. a conveyor belt; 442. a drive roll; 443. a driven roller; 444. a sprocket; 445. a chain; 446. a steam vent; 45. an inlet of a pre-oxidation furnace; 46. an outlet of the pre-oxidation furnace; 47. a support frame; 471. A support bar; 472. supporting the upright post; 5. a smoke collecting hood; 6. a fan; 7. environmental protection equipment; 71. A spray tower; 72. an incinerator; 73. a plasma column; 8. a non-woven felt.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the invention discloses processing equipment of a non-woven felt, which comprises a soaking pool 1, a squeezing machine 2, a dryer 3, a pre-oxidation furnace 4, a smoke collecting hood 5, a fan 6 and environmental protection equipment 7; wherein the soaking tank 1, the squeezing machine 2, the dryer 3 and the pre-oxidation furnace 4 are sequentially arranged according to the processing sequence of the non-woven felt 8; the two fume collecting hoods 5 are respectively and fixedly installed at the inlet 45 of the pre-oxidation furnace and the outlet 46 of the pre-oxidation furnace, the air outlets of the two fume collecting hoods 5 are connected with the inlet of the fan 6, and the outlet of the fan 6 is connected with the inlet of the environment-friendly equipment 7.

Referring to fig. 1 and 2, two slideways 11 are arranged on two sides of the soaking pool 1 along the running direction of the non-woven felt 8, and a portal frame 12 is in sliding fit with the slideways 11; a lifting appliance 13 is fixed on the portal frame 12 through bolts or welding, and the lifting appliance 13 is hook-shaped and is used for lifting the non-woven felt 8.

Referring to fig. 1, the environmental protection equipment includes a spray tower 71, an incinerator 72 and a plasma tower 73, the fan 6, the spray tower 71, the incinerator 72 and the plasma tower 73 are sequentially arranged according to the treatment sequence of the flue gas, that is, the outlet of the fan 6 is connected with the inlet of the spray tower 71, the outlet of the spray tower 71 is connected with the inlet of the incinerator 72, the outlet of the incinerator 72 is connected with the inlet of the plasma tower 73, and the outlet of the plasma tower 73 is introduced into the atmosphere.

Referring to fig. 3, the invention discloses a pre-oxidation furnace 4 for processing non-woven felt, which comprises a hearth 41, a steam pipeline 42, a transmission roller 43, a conveying mechanism 44, a driving mechanism (not shown), a pre-oxidation furnace inlet 45, a pre-oxidation furnace outlet 46 and a support frame 47; the hearth 41 penetrates through the pre-oxidation furnace 4 to form a pre-oxidation furnace inlet 45 and a pre-oxidation furnace outlet 46, and a layer of steam pipeline 42 is laid on the bottom layer in the hearth 41; the steam pipeline 42 is provided with a plurality of conveying rollers 43 which are arranged in parallel at equal intervals, and both ends of each conveying roller 43 are rotatably fixed with the side wall of the hearth 41 through bearings (not shown); the driving mechanism drives the conveying mechanism 44 to rotate; the support frame 47 is fixedly installed on the steam pipeline 42 through bolts or welding, and the furnace body of the pre-oxygen furnace 4 is lengthened along the length direction of the hearth 41.

Referring to fig. 3, 4 and 5, steam pipe 42 includes a lower pipe 421, an upper pipe 422 and a pillar pipe 423; lower floor's pipeline 421, upper pipeline 422 and stand pipeline 423 are all hollow cylinder not, a plurality of lower floor's pipeline 421 equidistant parallel arrange in furnace 41 on the bottom, stand pipeline 423 one end and lower floor's pipeline 421 are through the perpendicular intercommunication of welding, the other end and upper pipeline 422 are through the perpendicular intercommunication of welding, a plurality of upper pipeline 422 equidistant parallel arrange, a plurality of upper pipeline 422 and a plurality of lower floor's pipeline 421 are perpendicular, steam hole (not shown) have been seted up on the upper pipeline 422, steam hole is towards conveying mechanism 44.

Referring to fig. 3, 4 and 5, the supporting frame 47 includes a supporting rod 471 and a supporting column 472, the supporting rod 471 and the supporting column 472 are solid cylinders, one end of the supporting column 472 is vertically fixed to the lower layer pipe 421 through bolts or welding, the other end of the supporting column is vertically fixed to the supporting rod 471 through bolts or welding, the supporting rods 471 are arranged in parallel at equal intervals, the supporting rods 471 are perpendicular to the lower layer pipes 421, the supporting surface of the supporting frame 47 is higher than the upper layer pipe 422, and the supporting surface of the supporting frame 47 provides support for the lower end of the conveying mechanism 44.

Referring to fig. 2 and 6, the conveying mechanism 44 includes a conveying belt 441, a driving roller 442, a driven roller 443, a sprocket 444, a chain 445 and steam holes 446, the conveying belt 441 is an endless belt sleeved on the driving roller 442 and the driven roller 443, the driving roller 442, the driven roller 443 and the conveying rollers 43 have the same structure, a plurality of conveying rollers 43 are arranged between the driving roller 442 and the driven roller 443, the plurality of conveying rollers 43 are also arranged between an upper belt and a lower belt of the conveying belt 441, and both ends of the driving roller 442 and the driven roller 443 are rotatably fixed with the side wall of the hearth 41 through bearings (not shown); the driving mechanism drives the driving roller 442 to rotate so as to drive the conveying belt 441 to rotate.

Referring to fig. 2 and 6, chains 445 are fixedly mounted on both sides of the conveyor belt 441, chain wheels 444 are respectively disposed on both ends of the drive roller 442, the driven roller 443 and the conveying roller 43, and the chains 445 are engaged with the chain wheels 446 in a transmission manner; and the conveyer belt 441 is provided with a plurality of steam holes 446, and the plurality of steam holes 446 are uniformly distributed on the conveyer belt at equal intervals.

In this embodiment, the steam pipe 42, the conveying roller 43, the conveying mechanism 44, and the support frame 47 are all stainless steel.

Referring to fig. 1 to 6, the invention also discloses a processing technology of the non-woven felt, which comprises the following steps:

s1 the non-woven felt 8 is hung on a portal frame 12 through a hanger 13, the portal frame 12 slides along a slideway 11, and the non-woven felt 8 enters the soaking pool 1 and is fully soaked;

s2 extruding most of water from the fully soaked non-woven felt 8 through the wringing machine 2;

s3, extruding the non-woven felt 8 with most moisture to enter a dryer 3 for drying;

the non-woven felt 8 dried by the S4 enters a pre-oxidation furnace 4 for pre-oxidation treatment;

s5 the flue gas generated in the pre-oxidation furnace 4 is absorbed by the fume collecting hood 5 through the fan 6;

s6 the flue gas absorbed by the fan 5 is transported to the environmental protection device 7 through a pipeline, firstly enters the spray tower 71 to cool and deposit the water vapor in the flue gas, then enters the incinerator 72 to be incinerated, enters the plasma tower 73 after being incinerated, and finally the treated flue gas meeting the environmental protection requirement is discharged to the atmosphere from the plasma tower 73.

The working principle is as follows:

referring to fig. 1 to 6, firstly, fixing the non-woven felt 8 on a portal frame 12 through a lifting appliance 13, sliding the portal frame 12 along the soaking pool 1 through a slideway 11, adding a fire retardant into the soaking pool 1, and then putting the non-woven felt 8 into the soaking pool 1 for fully soaking; then manually picking out and putting the non-woven felt 8 into a squeezing machine 2 to squeeze out most of water; the non-woven mat 8 then enters the dryer 3, and the dryer 3 is supplied with heat from five burners (not shown).

After drying, the non-woven felt enters a pre-oxidation furnace 4 for pre-oxidation treatment, the pre-oxidation furnace 4 is electrically connected with a heating power distribution cabinet (not shown), and the pre-oxidation reaction condition is achieved in the pre-oxidation furnace 4 through electric heating; steam sprayed out of the steam pipeline 42 in the pre-oxidation furnace 4 is provided by a gas distribution tank (not shown), and the steam in the steam pipeline 42 enters the lower layer pipeline 421 from the gas distribution tank, then enters the upright post pipeline 423 and is sprayed out of steam holes on the upper layer pipeline 423; a driving mechanism (not shown) drives a driving roller 442 in the conveying mechanism 44 to rotate, the driving roller 442 drives a plurality of conveying rollers 43 and a driven roller 443 to rotate through a chain wheel 444 and a chain 445, and further drives a conveying belt 441 fixedly connected with the chain 445 to rotate, and after entering the pre-oxygen oven 3, the non-woven felt 8 is placed on the conveying belt 441, so that the non-woven felt 8 is driven along with the rotation of the conveying mechanism 44; the conveying belt 441 is a mesh belt and is provided with a plurality of steam holes 446 which are uniformly distributed at equal intervals, so that steam sprayed from the steam pipeline 42 can cool the non-woven felt 8 on the conveying belt 441, prevent the non-woven felt from discharging from the furnace and spontaneous combustion, and can effectively exhaust oxygen in the pre-oxidation furnace 4; meanwhile, a support frame 47 is arranged on the steam pipeline 42, and the support member 47 and the transmission roller 43 have certain supporting effect on the conveying belt 441.

Only a steam pipeline 42 is paved in the original pre-oxygen furnace 4, and the non-woven felt 8 is directly pulled out, so that the non-woven felt 8 is subjected to a large pulling force during transmission, and the non-woven felt 8 is narrowed during transmission; the transmission roller 43, the conveying mechanism 44 and the driving mechanism are added, and the product is conveyed by the conveying belt instead of being drawn out, so that the pulling force generated on the non-woven felt 8 during the transmission is reduced, and the quality of the non-woven felt 8 is effectively improved; meanwhile, the non-woven felt 8 is narrowed to indirectly cause the non-woven felt to be lengthened, so that the pre-oxidation time is further prolonged, and the production efficiency is reduced; meanwhile, the length of the furnace body of the pre-oxidation furnace 4 can be prolonged to prolong the pre-oxidation time of the product in the furnace body, but the time required by the pre-oxidation of the non-woven felt 8 is not changed, so that the total running speed of the furnace body can be increased, and the production efficiency is improved.

A smoke collecting hood 5 is respectively arranged at the inlet 45 and the outlet 46 of the pre-oxidation furnace, and harmful flue gas generated by the pre-oxidation furnace 4 is pumped into the environment-friendly equipment 7 by the smoke collecting hood 5 through a fan 6 for environment-friendly treatment.

The entire nonwoven mat processing process is now complete.

When the steam pipeline 42, the transmission roller 43, the conveying mechanism 44 and the support frame 47 in the hearth 41 are all made of stainless steel, after the furnace body meets the requirements, the non-phosphorus non-woven felt can be produced, namely, when the non-woven felt 8 is placed into the soaking pool 1 in the first step, the flame retardant in the soaking pool 1 can be changed into a non-phosphorus flame retardant, so that the non-woven felt 8 which is being pre-oxidized in the pre-oxidation furnace 4 cannot generate harmful smoke, and the final environmental protection equipment 7 is further saved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made, and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.