1. A surface coating device for producing a needled felt is characterized by comprising a transmission device (1) for transmitting the needled felt, a dip-dyeing device (2) for dip-dyeing the needled felt, a coating device (3) for coating the needled felt, a scraping device (4) for cleaning feed liquid on the surface of the needled felt and an air drying device (5);

the conveying device (1) comprises a conveying frame (11), a driving mechanism (12) is installed on one side of the conveying frame (11), the output end of the driving mechanism (12) is rotatably connected with a traction roller (13), and a conveying roller set (14) is arranged behind the traction roller (13);

the dip-dyeing device (2) comprises a dip-dyeing pool (21) arranged at the tail end of the transmission frame (11), a guide roller (23) is arranged at the upper part of the dip-dyeing pool (21), a transmission mechanism connected with the guide roller (23) and the transmission roller set (14) is used for feeding materials in a dip-dyeing process, and a dip-dyeing roller set (24) is arranged in the dip-dyeing pool (21);

the coating device (3) comprises a coating frame (31) arranged above the dip-dyeing tank (21), a liquid spraying mechanism is arranged on the coating frame (31), the liquid spraying mechanism comprises a liquid dispensing pump (32) and coating nozzles (33), the liquid outlet ends of the liquid dispensing pump (32) are connected to a plurality of coating nozzles (33) through pipelines, a coating roller set (34) is arranged behind the coating nozzles (33), and a transmission mechanism for connecting the coating roller set (34) and the transmission roller set (14) is used for feeding in a coating process;

the scraping device (4) comprises a scraping frame (41) arranged above the dip dyeing pool (21), a scraping roller group (45) for drawing the needled felt is arranged in the scraping frame (41), an upper scraping mechanism and a lower scraping mechanism are arranged in front of the scraping roller group (45), the upper scraping mechanism and the lower scraping mechanism are identical in structure, and the installation directions are opposite.

2. Surface coating device for the production of needle felt according to claim 1, characterised in that the guide rolls (23) are mounted sliding on two supports on top of the impregnation tank (21).

3. The surface coating apparatus for producing a needled felt according to claim 1, wherein the liquid spraying mechanism is provided in plural sets along the direction of conveyance of the needled felt.

4. The surface coating equipment for producing the needled felt is characterized in that a containing cavity for containing feed liquid is formed in the impregnation tank (21), a feed liquid pump (22) connected with an external medicine box is arranged on one side of the impregnation tank (21), and an output end of the feed liquid pump (22) penetrates through the impregnation tank (21).

5. Surface coating installation for the production of needled felt according to claim 4, characterized in that the needled felt is immersed in the liquor while passing through the set of dip-dye rollers (24) in said impregnation tank (21), and is transported in a V-shape over the set of dip-dye rollers (24).

6. The surface coating apparatus for producing a needled felt according to claim 1, wherein the liquid dispensing pump (32) mounted on the coating rack (31) has a liquid inlet end connected to an external medicine chest, and a through hole provided on a pipeline connected with a liquid outlet end connected to the coating nozzle (33).

7. The surface coating equipment for producing the needled felt is characterized in that the upper scraping mechanism comprises an upper transverse plate (42), an upper air cylinder (43) and an upper scraping plate (44), the upper transverse plate (42) is installed at the bottom of the scraping frame (41), the upper air cylinder (43) is connected onto the upper transverse plate (42), and the output end of the upper air cylinder (43) is connected with the upper scraping plate (44).

8. The surface coating equipment for producing the needled felt is characterized in that the lower scraping mechanism comprises a lower transverse plate (46), a lower air cylinder (47) and a lower scraping plate (48), the lower transverse plate (46) is installed inside the impregnation and dyeing tank (21), the lower air cylinder (47) is connected onto the lower transverse plate (46), and the lower scraping plate (48) is connected onto the top of the lower air cylinder (47).

9. Surface coating device for the production of needle felt according to claim 1, characterized in that the air drying device (5) comprises an air drying table (51) installed behind the scraper roller group (45), a guide roller (52) is installed at the front end of the air drying table (51), and the connecting structure between the scraper roller group (45) and the guide roller (52) is used for conveying the coated or impregnated needle felt.

10. Surface coating installation for the production of needle felt according to claim 9, characterised in that the air drying table (51) is equipped with several sets of air cooling devices (53) for blowing air.

Background

The needled felt is used for manufacturing a filter bag, has the advantages of high voidage, good air permeability, high dust collection efficiency, long service life and the like, can improve the performance of the filter bag by carrying out surface treatment on the filter bag, is coated by a single-side coating and a dip-dyeing coating when being produced, and can only carry out single-type coating operation by the conventional coating equipment, thereby having limitation.

Disclosure of Invention

Objects of the invention

In order to solve the technical problems in the background art, the invention provides surface coating equipment for producing the needled felt, which has the characteristics of various surface treatment and coating modes and convenience in cleaning redundant feed liquid on the surface layer of the needled felt after coating.

(II) technical scheme

In order to solve the technical problem, the invention provides surface coating equipment for producing a needled felt, which comprises a transmission device for transmitting the needled felt, a dip-dyeing device for dip-dyeing the needled felt, a coating device for coating the needled felt and a scraping device for cleaning feed liquid on the surface of the needled felt,

the conveying device comprises a conveying frame, a driving mechanism is installed on one side of the conveying frame, the output end of the driving mechanism is rotatably connected with a traction roller, and a conveying roller set is arranged behind the traction roller;

the dip-dyeing device comprises a dip-dyeing tank arranged at the tail end of the transmission frame, a guide roller is arranged at the upper part of the dip-dyeing tank, a transmission mechanism connected with the guide roller and the transmission roller set is used for feeding materials in a dip-dyeing process, and the dip-dyeing roller set is arranged in the dip-dyeing tank;

the coating device comprises a coating frame arranged above the dip-dyeing tank, a liquid spraying mechanism is arranged on the coating frame, the liquid spraying mechanism comprises a liquid dispensing pump and coating nozzles, the liquid outlet end of the liquid dispensing pump is connected to a plurality of coating nozzles through pipelines, a coating roller set is arranged behind the coating nozzles, and the coating roller set and a transmission mechanism connected with the transmission roller set are used for feeding in the coating process;

the scraping device comprises a scraping frame arranged above the dip dyeing tank, a scraping roller group for drawing the needled felt is arranged in the scraping frame, an upper scraping mechanism and a lower scraping mechanism are arranged in front of the scraping roller group, the upper scraping mechanism and the lower scraping mechanism are the same in structure, and the installation directions are opposite.

Preferably, the guide rollers are slidably mounted on two supports at the top of the impregnation tank.

Preferably, the liquid spraying mechanism is provided with a plurality of groups along the transmission direction of the needled felt.

Preferably, the inside of the impregnation and dyeing tank is provided with a containing cavity for containing the material liquid, a material liquid pump connected with an external medicine box is arranged on one side of the impregnation and dyeing tank, and the output end of the material liquid pump penetrates through the inside of the impregnation and dyeing tank.

Preferably, the needled felt is immersed into the feed liquid when passing through a dip-dyeing roller set in the dip-dyeing tank, and is conveyed on the dip-dyeing roller set in a V shape.

Preferably, the liquid inlet end of the liquid dispensing pump mounted on the coating frame is connected to an external medicine box, and a through hole formed in a pipeline connected with the liquid outlet end is connected with the coating nozzle.

Preferably, the upper scraping mechanism comprises an upper transverse plate, an upper air cylinder and an upper scraping plate, the upper transverse plate is installed at the bottom of the scraping frame, the upper transverse plate is connected with the upper air cylinder, and the output end of the upper air cylinder is connected with the upper scraping plate.

Preferably, the lower scraping mechanism comprises a lower transverse plate, a lower air cylinder and a lower scraping plate, the lower transverse plate is installed inside the dip dyeing tank, the lower transverse plate is connected with the lower air cylinder, and the top of the lower air cylinder is connected with the lower scraping plate.

Preferably, the air-dry device is including installing the air-dry platform at scraper roller group rear, the guide roll is installed to the front end of air-dry platform, the scraper roller group with connection structure between the guide roll is used for transmitting the acupuncture felt after coating or dip-dyeing.

Preferably, a plurality of groups of air cooling devices for blowing air are arranged on the air drying table.

The technical scheme of the invention has the following beneficial technical effects:

1. the surface coating equipment is provided with the dip-dyeing device and the coating device, so that dip-dyeing coating and single-side coating of the surface layer of the needled felt can be respectively carried out, and the treatment mode is convenient to switch;

2. the scraping device adopts the design of an upper scraping mechanism and a lower scraping mechanism, can work independently or cooperatively, and is convenient for cleaning redundant feed liquid on the surface of the needled felt after coating operation;

3. the dip-dyeing tank, the coating frame and the scraping device are arranged in a matched mode, redundant feed liquid and scraped feed liquid are directly collected into the dip-dyeing tank in the production process, waste of the feed liquid is reduced, and the production environment is kept clean.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the matched structure of the dip dyeing device, the coating device and the scraping device of the invention;

FIG. 3 is a schematic structural view of a dip dyeing apparatus of the present invention;

FIG. 4 is a schematic view of the coating apparatus of the present invention;

FIG. 5 is a schematic structural view of a dip-dyeing apparatus of the present invention in cooperation with a scraping apparatus;

FIG. 6 is a schematic structural view of a coating apparatus of the present invention in cooperation with a scraper.

Reference numerals:

1. a transmission device; 11. a transmission rack; 12. a drive mechanism; 13. a traction roller; 14. a set of transport rollers; 2. a dip dyeing device; 21. a dip-dyeing tank; 22. a feed liquid pump; 23. a guide roller; 24. dip-dyeing roller sets; 3. a coating device; 31. a coating frame; 32. liquid dispensing pump; 33. coating a spray head; 34. a coating roller set; 4. a scraping device; 41. a material scraping frame; 42. an upper transverse plate; 43. an upper cylinder; 44. an upper scraper plate; 45. a scraping roller set; 46. a lower transverse plate; 47. a lower cylinder; 48. a lower scraper; 5. an air drying device; 51. air drying platform; 52. a guide roller; 53. and an air cooling device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in figure 1, the surface coating equipment for producing the needled felt comprises a conveying device 1 for conveying the needled felt, a dip-dyeing device 2 for dip-dyeing the needled felt, a coating device 3 for coating the needled felt, a scraping device 4 for cleaning feed liquid on the surface of the needled felt,

the transmission device 1 comprises a transmission frame 11, a driving mechanism 12 is installed on one side of the transmission frame 11, the driving mechanism 12 drives a traction roller 13 with a rotating output end to rotate, and the needled felt is driven to be conveyed to a dyeing device 2 or a coating device 3 in the subsequent process along the traction roller 13 and a transmission roller group 14.

As an example of switching of the conveyance mechanism between the dip coating process and the single-side coating process: according to the conveying roller group 14, the needled felt is conveyed to the next process procedure, and the guide roller 23 or the coating roller group 34 can be selected according to the process requirements to build the conveying mechanism.

1. The guide roller 23 and the conveying roller group 14 are connected with a conveying mechanism for feeding in the dip dyeing process;

2. the transfer mechanism connecting the coating roll stack 34 to the transfer roll stack 14 is used for feeding the coating process.

As shown in fig. 3, the exhaust apparatus 2 includes an exhaust tank 21 installed at the end of the transfer frame 11, a guide roller 23 installed at the upper portion of the exhaust tank 21, and an exhaust roller group 24 installed inside the exhaust tank 21.

It should be noted that: the appearance chamber of accomodating the feed liquid is seted up to the inside in dip-dyeing pond 21, and one side in dip-dyeing pond 21 is provided with the material liquid pump 22 of connecting outside medical kit, the output of material liquid pump 22 runs through in the inside in dip-dyeing pond 21, material liquid pump 22 is used for the packing of the interior feed liquid of dip-dyeing pond 21, outside feed liquid case is connected to material liquid pump 22, inhale the feed liquid of feed liquid case through the feed liquor end, pipeline transmission to dip-dyeing pond 21 in the feed liquid passes through the output with the feed liquid, the feed liquid highly is a little higher than the roller contact surface of dip-dyeing roller set 24 in dip-dyeing pond 21, in the dip-dyeing roller set 24 time of needle felt through in dip-dyeing pond 21 immerses the feed liquid, and be the transmission of V type on dip-dyeing roller set 24, the dip-dyeing time of needle felt in the feed liquid is increased to the needle felt of V type transmission, make needle felt dip-dyeing coat fully.

In this embodiment, the dip-dyeing tank 21 is used for dip-dyeing and coating the needled felt, when dip-dyeing and coating are performed, the needled felt is drawn to pass through the transmission roller set 14, the guide roller 23 and the dip-dyeing roller set 24, when the roller contact surface in the dip-dyeing roller set 24 is passed through, the upper end surface and the lower end surface of the needled felt are immersed into the feed liquid, the feed liquid is fully contacted with the needled felt through extrusion of the roller contact surface, and dip-dyeing and coating of the needled felt are realized.

In an alternative embodiment, the guide rollers 23 are slidably mounted on two supports at the top of the dip dyeing tank 21, the supports of the dip dyeing tank 21 are provided with a sliding mechanism capable of adjusting the mounting height of the guide roller 23, which is not shown in the drawings, the sliding mechanism is a sliding groove formed in the supports and limiting rings mounted at two ends of the guide roller 23, and the mounting height of the guide roller 23 can be adjusted by sliding the limiting rings on the sliding groove, so that the tightness of the needled felt transmitted between the guide roller 23 and the dip dyeing roller group 24 can be adjusted to meet the process requirements of needled felts of different materials.

As shown in fig. 4, the coating device 3 includes a coating rack 31 installed above the impregnation and dyeing tank 21, the coating rack 31 is located right above the impregnation and dyeing tank 21, in the needle felt coating process, the redundant feed liquid directly drops into the impregnation and dyeing tank 21, the feed liquid is prevented from dropping to the ground to pollute the workshop environment, a liquid spraying mechanism is arranged on the coating rack 31, the liquid spraying mechanism includes a liquid distribution pump 32 and a coating spray head 33, the liquid distribution pump 32 is installed on the top of the coating rack 31, the liquid outlet end of the liquid distribution pump 32 is connected to a plurality of coating spray heads 33 through a pipeline, and a coating roller set 34 is arranged behind the coating spray heads 33.

It should be noted that: the liquid inlet end of a liquid preparation pump 32 arranged on the coating frame 31 is connected to an external medicine box, a through hole formed on a pipeline connected with the liquid outlet end is connected with the coating spray heads 33, the pipeline at the liquid outlet end of the liquid preparation pump 32 is a perforated pipe, and the liquid is transmitted into each coating spray head 33 through the through hole on the perforated pipe.

The liquid spraying mechanism is provided with a plurality of groups along the transmission direction of the needled felt, the liquid spraying mechanism is provided with one group in the application, and in an optional embodiment, the liquid spraying mechanism is provided with two groups along the transmission direction of the needled felt, so that the liquid can be sprayed on the surface of the needled felt twice in the transmission process of the needled felt, and the coating amount of the liquid on the needled felt is improved.

In this embodiment, the coating frame 31 is used to perform single-side coating of the needle felt, when performing single-side coating, the needle felt is pulled to pass through the conveying roller set 14 and the coating roller set 34, the material liquid required for coating comes from the coating nozzles 33, the liquid distributing pump 32 sucks in the material liquid of the external medicine box, the material liquid is uniformly distributed to each coating nozzle 33 through the perforated pipe connected with the liquid outlet end, the coating nozzles 33 spray the material liquid drops on the upper layer of the needle felt, and the material liquid on the upper layer of the needle felt is uniformly distributed through the extrusion of the roller shaft of the coating roller set 34.

As shown in fig. 2 and 5, the scraping device 4 includes a scraping rack 41 installed above the impregnation tank 21, a scraping roller set 45 for drawing the needled felt is built in the scraping rack 41, an upper scraping mechanism and a lower scraping mechanism are arranged in front of the scraping roller set 45, the upper scraping mechanism and the lower scraping mechanism have the same structure, and the installation directions are opposite.

As a structural example of the upper scraping mechanism: the upper scraping mechanism comprises an upper transverse plate 42, an upper cylinder 43 and an upper scraping plate 44, the upper transverse plate 42 is installed at the bottom of the scraping frame 41, the upper cylinder 43 is connected onto the upper transverse plate 42, the output end of the upper cylinder 43 is connected with the upper scraping plate 44, the upper cylinder 43 drives the piston rod at the output end to extend in a jacking mode, and the upper scraping plate 44 is driven to adjust the position downwards to scrape off redundant liquid.

As a structural example of the lower scraping mechanism: the lower material scraping mechanism comprises a lower transverse plate 46, a lower cylinder 47 and a lower scraping plate 48, the lower transverse plate 46 is installed inside the impregnation tank 21, the lower transverse plate 46 is connected with the lower cylinder 47, the top of the lower cylinder 47 is connected with the lower scraping plate 48, the lower cylinder 47 drives an output end piston rod to extend in a jacking mode, and the lower scraping plate 48 is driven to move upwards to adjust the position to scrape off redundant material liquid.

In this embodiment, the scraping device 4 has two working modes:

1. the upper scraping mechanism is matched with the coating device 3 to remove redundant feed liquid on the single surface of the needled felt;

2. go up scraping mechanism and scrape down the cooperation of material mechanism and dip-dye device 2 and carry out getting rid of the unnecessary feed liquid in acupuncture felt upper and lower floor, can carry out the switching of working method according to actual processing demand.

It should be noted that: the scraper blade is the straight board of surfacing, perhaps the scraper blade is the three-edged platform structure of surfacing, and protruding terminal surface contact acupuncture felt, and feed liquid strikes off the effect more excellent.

As shown in fig. 5, the process of combining the conveying device 1, the coating device 3 and the scraping device 4 is used for the coating process of the surface of the needled felt.

In this embodiment, after the needled felt is single-side coated by the conveying device 1 and the coating device 3, the needled felt is conveyed to the scraping roller set 45 along the coating roller set 34, in the conveying process, the upper cylinder 43 on the upper transverse plate 42 drives the output end piston rod to extend, the upper scraping plate 44 is driven to move towards the upper layer of the needled felt, the upper scraping plate 44 is in direct contact with the needled felt, the blanking liquid is scraped and separated from the upper layer of the needled felt under the influence of the forward thrust, and the scraped material liquid falls into the impregnation and dyeing tank 21 to be collected.

As shown in fig. 6, the structure of the transmission device 1, the dip dyeing device 2 and the scraping device 4 is used for the dip dyeing process of the surface of the needled felt.

In this embodiment, after the needle felt is dip-dyed and coated on the upper and lower layers through the transmission device 1 and the dip-dyeing device 2, the needle felt is transmitted to the scraping roller set 45 along the dip-dyeing roller set 24, in the transmission process, when the needle felt is transmitted to the lower scraping mechanism, the lower cylinder 47 on the lower transverse plate 46 drives the output end piston rod to extend upwards, the lower scraper 48 is driven to move towards the lower layer of the needle felt, the lower scraper 48 contacts with the lower layer of the needle felt to scrape off redundant feed liquid, when the needle felt is transmitted to the upper scraping mechanism, the upper cylinder 43 on the upper transverse plate 42 drives the output end piston rod to extend upwards, the upper scraper 44 is driven to move towards the upper layer of the needle felt, the upper scraper 44 directly contacts with the needle felt to scrape off the redundant feed liquid on the upper layer of the needle felt.

As shown in fig. 1, as an example of air-drying of the needle felt after the surface treatment: air-dry device 5 is including installing air-dry platform 51 at scraping material roller set 45 rear, guide roll 52 is installed to air-dry platform 51's front end, scrape the connection structure between material roller set 45 and the guide roll 52 and be used for transmitting the acupuncture felt after coating or dip-dyeing, carry the acupuncture felt to air-dry platform 51 back, through air-dry two sets of air cooling device 53 of the last installation of platform 51 to the acupuncture felt air supply, make acupuncture felt surface feed liquid drying with higher speed, conveniently carry out the rolling to the acupuncture felt.

Instead, the following steps are carried out: the air cooling device 53 can be replaced by a heating device with a heating function, and the same drying effect can be achieved by performing thermal drying on the surface layer of the needled felt in a heating mode.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.