CN211668195U

CN211668195U - Drying device is used in leather production

Info

Publication number: CN211668195U
Application number: CN202020142814.XU
Authority: CN
Inventors: 李桂军; 李浩扬
Original assignee: Huaian Kaiyue Technology Development Co ltd
Current assignee: Huaian Kaiyue Technology Development Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-10-13
Anticipated expiration: 2030-01-22

Abstract

The utility model discloses a drying device for leather production, which comprises a conveying mechanism arranged in an oven, wherein the conveying mechanism consists of two groups of symmetrically distributed needle type conveyor belts, a supporting plate is arranged between each group of needle type conveyor belts with the initial ends arranged outside the oven, and at least one blank pressing device is fixedly connected on the supporting plate; the oven is at least internally provided with three drying inner cavities. The arrangement of the edge pressing device enables the base cloth and the felting needles on the needle type conveyor belt to be pressed and attached at the initial end of the needle type conveyor belt, so that the felting needles penetrate through the base cloth, and the stability of the base cloth in the conveying process is ensured; in addition, the cylinder matched with the edge pressing device and the thread matching of the connecting rod and the fixing block realize the longitudinal and transverse adjustment of the edge pressing device, the effect of penetrating the felting needle is ensured, in addition, the extrusion piece is adopted to apply pressure, the thin iron wire has certain rigidity and flexibility, and under the condition that the transmission of the base cloth is not influenced, the auxiliary base cloth penetrates the felting needle.

Description

Drying device is used in leather production

Technical Field

The utility model relates to a drying device, in particular to drying device is used in leather production.

Background

In the production process of polyurethane PU synthetic leather, which relates to a coating process, composite slurry is coated on base cloth, the base cloth coated with the composite slurry needs to be dried, the traditional composite slurry is oleoresin slurry, oleoresin contains a large amount of toxic and harmful gas, which brings great harm to environment and operators, and the synthetic leather made of oleoresin coating also can have toxic and harmful substances remained and harm to consumers, so the prior art starts to use nontoxic and harmless water-based resin to coat the base cloth, but the water-based resin contains a large amount of water molecules, the traditional oven equipment cannot meet the drying requirement, the drying equipment specially used for drying the water-based resin is appeared on the market at present, but the equipment structure is mostly designed into a front heating cavity and a rear heating cavity, the temperature gradient is generally 60-70 ℃, then directly raising the temperature to 100-140 ℃, and the design has the problems that the finally prepared synthetic leather has uneven surface cells due to quick water loss, and has poor folding resistance and stripping performance; in addition, in the coating process, the base cloth is conveyed forwards by the needle type conveyor belt, and the situation that the needles are separated from the base cloth is inevitable in the conveying process; in addition, the air outlet of the air outlet pipe of the existing oven structure is directly blown against the surface of the base fabric, so that the defects of cracks, pits and the like on the surface of the leather are easily caused. Therefore, a drying device for leather production is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a drying device is used in leather production can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a drying device for leather production comprises a conveying mechanism arranged in an oven, wherein the conveying mechanism consists of two groups of symmetrically distributed needle type conveyor belts, a supporting plate is arranged between each group of needle type conveyor belts with the initial ends arranged outside the oven, and at least one edge pressing device is fixedly connected onto the supporting plate;

at least, be equipped with three stoving inner chamber in the oven, the oven top that every stoving inner chamber corresponds is equipped with the exhaust pipe, and the intracavity all is equipped with steam heater in every stoving, steam heater and setting are total tuber pipe and total tuber pipe intercommunication down on each stoving inner chamber, it communicates three expenditure tuber pipe A at least to go up total tuber pipe, total tuber pipe communicates three expenditure tuber pipe B at least down, expenditure tuber pipe A and expenditure tuber pipe B all are equipped with a plurality of exhaust vents on that one side towards treating the stoving piece, that one side that has the exhaust vent on the expenditure tuber pipe A is through adjusting lever connection guide plate A, that one side that has the exhaust vent on the expenditure tuber pipe B is through adjusting lever connection guide plate B.

Furthermore, the needle type conveyor belt comprises a chain, a plurality of supporting plates are distributed on the chain, the upper edge plates of the supporting plates are locked in threaded holes in two pin shafts of the same section of the chain through two bolt threads, and a plurality of vertical pricking pins are welded on the lower edge plates of the supporting plates.

Further, the blank pressing device comprises a support fixed on the support plate, a cylinder is arranged at the upper end of the support, the end part of a piston rod of the cylinder is fixedly connected with a fixed block, the middle part of the fixed block is fixedly connected with a connecting rod, the end part of the connecting rod is fixedly connected with a pressure plate, and the pressure plate is arranged above the felting needle.

Further, a circle of extrusion piece consisting of thin metal wires is fixed on the edge of the pressing disc.

Further, the guide plate A and the guide plate B are oppositely arranged and are metal straight plates.

Further, guide plate A and guide plate B are the metal sheet and relative arrangement, guide plate A both sides are the tilt up form, guide plate B both sides are the tilt down form.

Furthermore, each exhaust pipe on the top end of the drying inner cavity is communicated with an air inlet pipeline of the corresponding exhaust fan, and except the exhaust fan N corresponding to the exhaust pipe N of the tail-end drying inner cavity N, the air outlet pipelines of the rest exhaust fans are communicated with the tail gas treatment chamber.

Further, the tail gas treatment chamber is made of activated carbon.

Furthermore, the adjusting rod is a screw rod, and the distance L between the guide plate A and the outgoing air pipe A and the distance L between the guide plate B and the outgoing air pipe B are both 1-5 cm.

Compared with the prior art, the utility model discloses following beneficial effect has:

firstly, arranging a blank holder device to enable the base cloth and the felting needles on the needle type conveyor belt to be pressed and attached at the initial end of the needle type conveyor belt, so that the felting needles penetrate through the base cloth, and the stability of the base cloth in the conveying process is ensured; in addition, the cylinder matched with the edge pressing device and the thread matching of the connecting rod and the fixed block realize the longitudinal and transverse adjustment of the edge pressing device, the effect of penetrating through the felting needle is ensured, in addition, an extrusion piece is adopted for applying pressure, the thin iron wire has certain rigidity and flexibility, and under the condition of not influencing the transmission of the base cloth, the auxiliary base cloth penetrates through the felting needle;

secondly, the side, provided with the air outlet, of the outgoing air pipe A is connected with the guide plate A through the adjusting rod, the side, provided with the air outlet, of the outgoing air pipe A is connected with the guide plate B through the adjusting rod, the adjusting rod is a screw rod, the operation is easy, the design has the advantage that the defects of cracks, pits and the like on the surface of the leather caused by directly blowing the leather against the base cloth are avoided, and the base cloth is protected; in addition, the two sides of the guide plate A and the guide plate B are inclined, heat flow is fully mixed with hot air from the adjacent guide plate along the guide direction of the guide plate, so that the temperature, the wind power and the like of the drying inner cavity of the section are more uniform, and the drying and forming effects of the synthetic leather are stable and consistent;

and thirdly, exhaust pipelines led out from the other drying inner cavities except the tail end drying inner cavity N pass through a tail gas treatment chamber, harmful pollutants are adsorbed and then discharged, and the environment is protected.

Drawings

FIG. 1 is a schematic view of the overall structure of the drying device for leather production of the present invention;

FIG. 2 is a schematic view of the conveying structure of the drying heat recycling device for leather production (with a base cloth);

FIG. 3 is a partially enlarged schematic view of the conveying structure of the drying heat recycling device for leather production of the present invention;

FIG. 4 is a schematic view of the connection structure of the needle type conveyor belt felting needle and the chain of the drying device for leather production of the present invention;

fig. 5 and fig. 6 are side views of the edge pressing device of the drying device for leather production of the present invention;

FIG. 7 is a schematic view of the structure of the drying device for leather production showing the edge pressing device and the needle;

FIG. 8 is a schematic view of the connection between the steam generator and the upper and lower main air outlet pipes of the drying apparatus for leather production of the present invention;

FIG. 9 is a schematic view of the position of the air outlet of the drying device for leather production;

fig. 10 is a schematic structural view of a deflector a and a deflector B of the drying device for leather production in embodiment 2.

In the figure: 1. an oven; 2. A conveying mechanism; 3. A needle conveyor belt; 4. a support plate; 5. a blank pressing device; 501. a support frame; 502. a cylinder; 503. a fixed block; 504. a connecting rod; 505. a platen; 506. an extrusion; 6. a steam heater; 7. an upper main air outlet pipe; 8. a lower main air outlet pipe; 9. an air pipe A is branched; 10. an air pipe B is branched; 11. an air outlet; 12. adjusting a rod; 13. a flow guide plate A; 14. a flow guide plate B; 15. a needle; 16. a tail end drying inner cavity N; 17. an exhaust duct N; 18. a tail gas treatment chamber; 31. a chain; 32. and (7) a supporting plate.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-9, a drying device for leather production comprises a conveying mechanism 2 arranged inside an oven 1, wherein the conveying mechanism 2 is composed of two groups of needle conveyor belts 3 which are symmetrically distributed (the power transmission directions of the two groups of needle conveyor belts refer to fig. 2, and fig. 2 is also the base cloth conveying direction), the needle conveyor belts 3 comprise chains 31, a plurality of supporting plates 32 are distributed on the chains 31, the upper edge plates of the supporting plates 32 are locked in threaded holes on two pin shafts of the same section of the chains 31 through two bolt threads, and a plurality of vertical pricker needles 15 are welded on the lower edge plates of the supporting plates 32;

a supporting plate 4 is arranged between each group of needle type conveyor belts 3 with the starting ends arranged outside the oven 1, two edge pressing devices 5 are fixedly connected to the supporting plate 4, each edge pressing device 5 comprises a supporting frame 501 fixed on the supporting plate 4, an air cylinder 502 is arranged at the upper end of the supporting frame 501, a fixed block 503 is fixedly connected to the end part of a piston rod of the air cylinder 502, the middle part of the fixed block 503 is fixedly connected with a connecting rod 504, the end part of the connecting rod 504 is fixedly connected with a pressing plate 505, the pressing plate 505 is arranged above the felting needle 15, a circle of extruding part 506 consisting of thin metal wires is fixed to the edge of the pressing plate 505;

four drying inner cavities are arranged in the oven 1, specifically, an initial drying inner cavity A, a drying inner cavity B, a drying inner cavity C and a tail end drying inner cavity N16, the four drying inner cavities are separated by a partition board made of thermal insulation materials during specific implementation, the partition board is arranged on the basis of not influencing the transmission of the needle type conveyor belt 3, the temperature transmission among the drying inner cavities is avoided to a certain extent, the top end of the oven 1 corresponding to the initial drying inner cavity A7 is provided with an exhaust pipe A, the top end of the oven 1 corresponding to the drying inner cavity B is provided with an exhaust pipe B, the top end of the oven 1 corresponding to the drying inner cavity C is provided with the exhaust pipe C, the top end of the oven 1 corresponding to the tail end drying inner cavity N16 is provided with an exhaust pipe N17, the steam heaters 6 are arranged in the initial drying inner cavity A, the drying inner cavity B, the drying inner cavity C and the tail end drying inner cavity N16, the, the upper main air outlet pipe 7 is communicated with three branch air pipes A9, the lower main air outlet pipe 8 is communicated with three branch air pipes B10 (the part can be matched according to the size of base cloth during specific implementation), the side, facing the pieces to be dried, of each branch air pipe A9 and each branch air pipe B10 is provided with a plurality of air outlets 11, the side, provided with the air outlets 11, of each branch air pipe A9 is connected with a guide plate A13 through an adjusting rod 12, the side, provided with the air outlets 11, of each branch air pipe B10 is connected with a guide plate B14 through the adjusting rod 12, the adjusting rod 12 is a screw rod, the space L1 between each guide plate A13 and each branch air pipe A9 and the space L2 between each guide plate B14 and each branch air pipe B10 are both 2cm, and the guide plates A13 and B14 are.

Except for an exhaust pipe N13 corresponding to the tail end drying cavity N12, the exhaust pipe A, the exhaust pipe B and the exhaust pipe C are communicated with air inlet pipelines of a corresponding exhaust fan A, a corresponding exhaust fan B and a corresponding exhaust fan C, air outlet pipelines of the corresponding exhaust fan A, the corresponding exhaust fan B and the corresponding exhaust fan C are communicated with the tail gas treatment chamber 18, and the tail gas treatment chamber 18 is made of activated carbon.

Exhaust pipe A, exhaust pipe B, exhaust pipe C and exhaust pipe N all communicate with the intake stack of air exhauster A, air exhauster B, air exhauster C and air exhauster N that correspond separately, thereby exhaust duct of air exhauster A, air exhauster B and air exhauster C all communicates with the tail gas treatment chamber 18 that is made by activated carbon and carries out adsorption treatment to the combustion gas, and exhaust duct exhaust gas of air exhauster N discharges naturally, discharges into in the atmosphere promptly.

It should be noted that, the utility model relates to a drying device is used in leather production, in operation, the base cloth that waits to dry is drawn by the manual work and is placed on pin conveyor 3 when beginning, the border pressfitting of base cloth passes felting needle 15, then oven 1 starts to work, coating thick liquids on one side, the base cloth of coating thick liquids can pass through blank holder 5 earlier in the transmission stoving process of pin conveyor 3, blank holder 5 can be according to the distance with the base cloth in advance, through cylinder 502 (the model of cylinder 502 is AirTACXQGB 50X 50-FA, and do not improve the connected mode of cylinder 502, adopt prior art) adjust the longitudinal distance between pressure disk 505 and the base cloth, guarantee that extrusion spare 506 can just press the base cloth and make felting needle 15 pass the base cloth; after adjustment is completed, when the base cloth passes through, the extrusion pieces 506 distributed on the pressure plate 505 play a role of applying pressure, so that the felting needles 15 pierce the base cloth, and then are conveyed to the initial drying inner cavity A along with the needle conveyor belt 3, the drying temperature of the initial drying inner cavity A is 40-60 ℃, and then are sequentially conveyed to the drying inner cavity B, the drying inner cavity C and the tail end drying inner cavity N16, the temperatures of the three cavities are respectively 60-80 ℃, 80-120 ℃ and 120-140 ℃, the base cloth is dried by hot air flows discharged from the air outlet holes 11 of the four drying inner cavities and then is led out from the oven 1 along with the needle conveyor belt 3, and a guide roller higher than a working frame is arranged between the base cloth and a winding frame after the hot air flows are led out, so that the felting needles are separated from the 15 on;

in the process, an exhaust pipe A corresponding to the drying inner cavity A at the starting end, an exhaust pipe B corresponding to the drying inner cavity B and an exhaust pipe C corresponding to the drying inner cavity C are communicated with air inlet pipelines of an exhaust fan A, an exhaust fan B and an exhaust fan C which respectively correspond to the exhaust fan A, the exhaust fan B and the exhaust fan C, air outlet pipelines of the corresponding exhaust fan A, the exhaust fan B and the exhaust fan C are communicated with a tail gas treatment chamber 18, the tail gas treatment is carried out after the air flow is sucked out, and the treated air flow is discharged into the; the hot air exhausted by the air outlet pipeline of the exhaust fan N corresponding to the tail end drying cavity N16 directly enters the atmosphere to be naturally exhausted;

example 2

As shown in fig. 10, this technical solution is a further optimization of the technical solution of the embodiment, the flow guide plate a13 and the flow guide plate B14 are both metal plates and are arranged oppositely, two sides of the flow guide plate a13 are inclined upward, the inclination angle α is 120 °, two sides of the flow guide plate B14 are inclined downward, the inclination angle β is 120 °, and the remaining embodiments are the same as those of embodiment 1, and are not repeated here.

Thereby guide plate A13 and guide plate B14 play and change the time of hot-blast direction of transfer increase hot-blast mixing to make temperature, wind-force etc. that correspond the stoving inner chamber more homogeneous, avoid hot-blast direct blowing to arouse defects such as leather surface production crackle, pit on the base cloth simultaneously, play the guard action to the base cloth.

The above relates to the temperature control mode: the temperature in the drying inner cavity is determined by adjusting the air inflow, the air inflow is generally controlled by an electromagnetic valve, the specific temperature is fed back by a temperature sensor, and the temperature is not adjusted in the later period after being adjusted once in production unless the technical parameters of products to be dried are different; in addition, the above adjusting mode is the prior art.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a drying device is used in leather production which characterized in that: the device comprises a conveying mechanism (2) arranged in an oven (1), wherein the conveying mechanism (2) consists of two groups of symmetrically distributed needle type conveyor belts (3), a supporting plate (4) is arranged between each group of needle type conveyor belts (3) with the initial ends arranged at the outer side of the oven (1), and at least one edge pressing device (5) is fixedly connected onto the supporting plate (4);

at least three drying inner cavities are arranged in the drying oven (1), an exhaust pipe is arranged at the top end of the drying oven (1) corresponding to each drying inner cavity, a steam heater (6) is arranged in each drying inner cavity, the steam heater (6) is communicated with an upper main air outlet pipe (7) and a lower main air outlet pipe (8) which are arranged in each drying cavity, the upper main air outlet pipe (7) is at least communicated with three branch air pipes A (9), the lower main air outlet pipe (8) is at least communicated with three branch air pipes B (10), the surfaces of the outgoing air pipe A (9) and the outgoing air pipe B (10) facing the piece to be dried are both provided with a plurality of air outlet holes (11), the side of the outgoing air pipe A (9) with the air outlet hole (11) is connected with a guide plate A (13) through an adjusting rod (12), the side of the outgoing air pipe B (10) with the air outlet (11) is connected with a guide plate B (14) through an adjusting rod (12).

2. The drying device for leather production according to claim 1, characterized in that: the needle type conveyor belt (3) comprises a chain (31), a plurality of supporting plates (32) are distributed on the chain (31), the upper edge plates of the supporting plates (32) are locked in threaded holes in two pin shafts of the same section of the chain (31) through two bolt threads, and a plurality of vertical puncture needles (15) are welded on the lower edge plates of the supporting plates (32).

3. The drying device for leather production according to claim 1, characterized in that: blank pressing device (5) is including fixing support frame (501) on backup pad (4), support frame (501) upper end is equipped with cylinder (502), cylinder (502) piston rod end fixed connection fixed block (503), fixed block (503) middle part and connecting rod (504) fixed connection, connecting rod (504) end fixed connection pressure disk (505), the top of felting needle (15) is arranged in pressure disk (505).

4. The drying device for leather production according to claim 3, characterized in that: a circle of extrusion piece (506) composed of thin metal wires is fixed on the edge of the pressing disc (505).

5. The drying device for leather production according to claim 1, characterized in that: the guide plate A (13) and the guide plate B (14) are arranged oppositely and are all metal straight plates.

6. The drying device for leather production according to claim 1, characterized in that: guide plate A (13) and guide plate B (14) are the metal sheet and relative arrangement, guide plate A (13) both sides are the tilt up form, guide plate B (14) both sides are the tilt down form.

7. The drying device for leather production according to claim 1, characterized in that: and the exhaust pipes on the top ends of the drying inner cavities are communicated with air inlet pipelines of the exhaust fans corresponding to the exhaust pipes, and the air outlet pipelines of the rest exhaust fans are communicated with a tail gas treatment chamber (18) except the exhaust fan N corresponding to the exhaust pipe N (17) of the tail-end drying inner cavity N (16).

8. The drying device for leather production according to claim 7, characterized in that: the tail gas treatment chamber (18) is made of activated carbon.

9. The drying device for leather production according to any one of claims 1 to 8, characterized in that: the adjusting rod (12) is a screw, and the distance L1 between the guide plate A (13) and the outgoing air pipe A (9) and the distance L2 between the guide plate B (14) and the outgoing air pipe B (10) are both 1-5 cm.