CN213255525U

CN213255525U - Coating machine oven

Info

Publication number: CN213255525U
Application number: CN202021761210.XU
Authority: CN
Inventors: 陈浩; 陶琦
Original assignee: Wuxi Xinhao Protective Film Co ltd
Current assignee: Wuxi Xinhao Protective Film Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-05-25
Anticipated expiration: 2030-08-20

Abstract

The application relates to the technical field of coating processing devices, in particular to a coating machine drying oven which comprises a drying chamber, a film inlet roller and a film outlet roller, wherein the film inlet roller and the film outlet roller are positioned on two sides of the outer wall of the drying chamber; the top of each drying unit is provided with a communicated exhaust chamber, and the top of each exhaust chamber is provided with an exhaust gas discharge pipe communicated with the outside. This application has the effect that improves oven-dry mass.

Description

Coating machine oven

Technical Field

The application relates to the technical field of coating processing devices, in particular to a coating machine drying oven.

Background

The coating machine oven is a component of a coating machine, is mainly used for the surface coating process of films, paper and the like, and when a coiled base material is coated with a layer of glue, paint or ink with a specific function, the coiled base material is sent into the coating machine oven to carry out drying treatment on the coating on the surface of the base material to form a layer of film.

At present, when a coating machine drying oven dries a coating, the influence of the aspects of drying temperature, control of drying air flow, drying efficiency and the like on the coating drying effect needs to be considered; the expansibility coating such as polyethylene is sensitive to temperature during curing, and the tensile strength of the film is reduced and shrinkage is easy to occur when the temperature is too high; improper air flow handling can also lead to quality problems, such as uneven supply air jets or excessive exhaust rates that can cause the film to flutter around and degrade the film.

Chinese patent publication No. CN203695359U discloses a coating machine oven for PET transfer films, which comprises a high-temperature drying chamber, low-temperature drying chambers disposed at both sides of the high-temperature drying chamber, gas pipes connecting the high-temperature drying chamber and the low-temperature drying chambers, a three-way valve connected with the gas pipes, and a gas pipe communicating the high-temperature drying chamber and the gas pipes; the heater in the air inlet pipe heats the drying air and conveys the drying air to the high-temperature drying chamber, and according to the law of thermodynamics, hot air flows are spontaneously conducted to the low-temperature drying chamber from the high-temperature drying chamber through the air conveying pipe, so that the utilization rate of heat is improved.

In view of the above-mentioned related technologies, the inventor believes that the heat transfer between the high-temperature drying unit and the low-temperature drying unit is not uniform, and the drying quality is poor.

SUMMERY OF THE UTILITY MODEL

In order to improve drying quality, this application provides a coating machine oven.

The application provides a coating machine oven adopts following technical scheme:

a coating machine drying oven comprises a drying chamber, a film inlet roller and a film outlet roller, wherein the film inlet roller and the film outlet roller are positioned on two sides of the outer wall of the drying chamber; a plurality of drying units are arranged in the drying chamber, the drying units are formed by separating partition plates, adjacent drying units are communicated, and an air supply temperature control chamber is arranged at the bottom of each drying unit; an air outlet communicated with the bottom of the drying chamber is formed in the top of the air supply and control chamber, and an air outlet assembly fixedly connected with the air outlet is arranged in the drying unit; the top of the drying unit is provided with a communicated exhaust chamber; and the top of the exhaust chamber is provided with an exhaust gas discharge pipe communicated with the outside.

By adopting the technical scheme, the base material is conveyed into the drying unit through the film inlet roller, the airflow is heated in the air supply and control room and flows into the air outlet assembly through the air outlet, and the hot airflow uniformly dries the coating on the base material through the air outlet assembly; the air supply temperature control chamber and the air outlet assembly are matched for use, so that air flow in each drying unit is stable, and the drying quality is improved; the dry waste gas enters the exhaust chamber and is subjected to subsequent treatment through the waste gas discharge pipe, so that on one hand, the waste gas is prevented from being retained in the drying chamber to increase the humidity in the drying chamber, and the drying quality is reduced; on the other hand, the subsequent waste gas treatment is convenient, and the environment is more protected.

Preferably, one side of the bottom of the drying chamber, which is close to the film feeding roller, is provided with a plurality of film conveying rollers, and one side of the top of the drying unit, which is close to the partition plate, is provided with a film conveying roller; upload the membrane roller and be located the stoving unit, it is located the baffle department of two adjacent stoving units to pass the membrane roller down, the air-out subassembly is located the below of uploading the membrane roller, the air-out subassembly include with two play tuber plates of stoving unit bottom fixed connection, with the connecting plate of the top fixed connection of two play tuber plates, play tuber plate slope sets up, and two play tuber plates are frustum shape setting with the connecting plate, it has a plurality of rows evenly distributed's exhaust vent to open out the tuber plate.

By adopting the technical scheme, the upper film conveying rollers and the lower film conveying rollers are arranged on two sides of the drying chamber in the horizontal direction in a staggered manner, so that the drying length of the base material between the drying units is increased, and the drying efficiency is improved; the air outlet plate has a gathering effect on airflow, so that energy loss of the airflow is reduced; the air outlet plate is obliquely arranged so that air flow is vertically contacted with the coating, and the defect of coating quality caused by the fact that the coating moves on the base material due to air flow blowing is avoided; the air outlets are uniformly distributed, so that the air flow is more uniformly distributed, and the air flow is promoted to be fully contacted with the coating.

Preferably, the air guide plates are arranged on the opposite sides of the two air outlet plates and are horizontally arranged.

By adopting the technical scheme, the air guide plates have a drainage effect on air flow, the air flow is buffered between the two adjacent air guide plates, the air flow in contact with the coating is more stable, and the drying quality of the coating is improved.

Preferably, the air supply and control room is provided with a plurality of electric heating plates which are alternately arranged on two sides of the air supply and control room in the vertical direction in parallel; and a variable frequency fan is arranged on the outer side wall of the air supply temperature control chamber.

Through adopting above-mentioned technical scheme, the frequency conversion fan sends fresh air into air supply accuse greenhouse, and the air current heats along the parallel alternative direction of arranging of electric heating board from blowing mouthful for the heating is abundant.

Preferably, the temperature in the air supply temperature control chamber is sequentially increased from the direction of keeping away from the film inlet roller, and the air outlet is provided with a temperature sensor fixedly connected with the air outlet.

By adopting the technical scheme, the temperature sensor monitors the temperature of the drying airflow, the temperature in each drying unit is raised in sequence, the control of the moisture loss speed of the coating is facilitated, the shrinkage phenomenon caused by too fast moisture loss is avoided, and the drying quality is improved.

Preferably, a plurality of gas pipes are arranged on the exhaust chamber, the gas pipes are communicated with the air supply temperature control chamber, and the gas pipes are provided with one-way explosion-proof valves.

Through adopting above-mentioned technical scheme, one-way explosion-proof valve plays the guide effect to the air current, and waste gas flows in the air supply accuse greenhouse again from the exhaust chamber along the gas-supply pipe for waste gas and fresh air mix, and waste gas carries out the heat transfer to fresh air, practices thrift the energy that fresh air heated.

Preferably, the outer wall of the drying chamber is provided with a heat-insulating layer.

Through adopting above-mentioned technical scheme, the heat preservation reduces the heat and scatters, the energy saving.

Preferably, the air outlet is provided with a filter screen which is detachably connected.

By adopting the technical scheme, fresh air is mixed with external dust, circulating waste gas is mixed with powder generated in the drying process of the coating, and the dust is filtered out by the filter screen, so that the dust is not attached to the coating along with airflow, and the film forming quality of the coating is improved; on the other hand, the possibility of explosion is reduced, and the safety of the oven is improved.

Preferably, one side, far away from the air outlet, of the connecting plate is provided with a second collecting tank fixedly connected with the connecting plate, the second collecting tank is provided with a second scraper blade along the axis, and the second scraper blade is abutted to the upper film-loading roller.

By adopting the technical scheme, the second scraper plate removes the coating attached to the surface of the film-uploading roller, so that the possibility of uneven coating thickness is reduced; the second collecting tank collects the coating powder dried by electrostatic adsorption, and reduces the possibility that the powder is attached to the surface of the coating to cause poor coating film-forming quality.

Preferably, one side of the drying unit, which is far away from the gas transmission pipeline, is provided with a detachable plate.

Through adopting above-mentioned technical scheme, can dismantle the board and be convenient for the inside cleanness of drying chamber, improve drying quality.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the temperature and airflow speed of each drying unit are different through the matching use of the air outlet assembly of the air supply and temperature control chamber, so that the drying precision is improved, and the drying quality is improved;

2. the air supply temperature control chamber and the exhaust chamber are connected through the gas transmission pipeline, so that the waste gas is recycled, and the energy is saved.

Drawings

FIG. 1 is a sectional view for embodying an overall structure in an embodiment of the present application;

fig. 2 is a schematic structural diagram for embodying the air outlet assembly in the embodiment of the present application;

FIG. 3 is an enlarged view of A in FIG. 1;

FIG. 4 is a schematic structural view for embodying an air delivery pipe in the embodiment of the present application;

fig. 5 is a schematic structural diagram for embodying a detachable plate in the embodiment of the present application.

Description of reference numerals: 1. a drying chamber; 11. a drying unit; 111. a partition plate; 12. a film feeding roller; 13. a film outlet roller; 14. a turning roll; 141. positioning a plate; 142. a first squeegee; 143. a first holding tank; 15. a film-feeding roller; 16. an upper film conveying roller; 17. an air outlet assembly; 171. an air outlet plate; 172. a connecting plate; 173. an air outlet; 174. an air deflector; 18. a second holding tank; 181. a second squeegee; 19. an exhaust port; 191. an exhaust pipe; 192. an electrically operated valve; 2. an air supply temperature control chamber; 21. a variable frequency fan; 22. an electrical heating plate; 23. an air outlet; 24. a filter screen; 25. a temperature sensor; 3. an exhaust chamber; 31. a gas delivery pipe; 32. a one-way explosion-proof valve; 33. an exhaust gas discharge pipe; 34. a speed regulating valve; 4. a detachable plate; 5. and (7) an insulating layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a coating machine oven.

Referring to fig. 1, a coater oven comprises a drying chamber 1 consisting of a plurality of drying units 11, a film inlet roller 12 and a film outlet roller 13 which are positioned on the outer walls of two sides of the drying chamber 1, and a base material is conveyed into and out of the drying chamber 1 through the film inlet roller 12 and the film outlet roller 13.

Referring to fig. 1, the drying units 11 are partitioned by partition plates 111, adjacent drying units 11 are communicated with each other, an air supply temperature control chamber 2 is arranged at the bottom of each drying unit 11, an air outlet 23 communicated with the bottom of each drying unit 11 is arranged at the top of each air supply temperature control chamber 2, the air supply temperature control chambers 2 provide drying air flow for the drying units 11, and the drying air flow flows into the drying units 11 through the air outlets 23. The top of the drying unit 11 is provided with an exhaust port 19, the exhaust port 19 is provided with a communicating exhaust pipe 191 in the exhaust chamber 3, and the exhaust pipe 191 plays a role in guiding airflow; the electric valve 192 is disposed at the opening of the exhaust pipe 191, and the electric valve 192 prevents the exhaust gas from flowing back into the drying unit 11, thereby reducing the drying quality.

Referring to fig. 1, a variable frequency fan 21 is arranged on the outer side wall of the air supply and control room 2, and the variable frequency fan 21 provides air flows with different air speeds according to drying requirements; be equipped with a plurality of electric heating board 22 at air supply accuse greenhouse 2, the parallel alternative setting of electric heating board 22 is in the both sides of the vertical direction in air supply accuse greenhouse 2, and the mixing time of fresh air and waste gas is prolonged to this kind of mode of arranging for carry out abundant heat transfer between waste gas and the fresh air, reduce the live time of electric heating board, the energy saving. The blowing port of the variable frequency fan 21 is arranged between the bottommost electric heating plate 22 and the bottom plate of the air supply temperature control chamber 2, extends into the air supply temperature control chamber 2, and airflow flows into the air supply temperature control chamber 2 from the outside through the variable frequency fan 21.

Referring to fig. 1, the air outlet 23 is provided with a temperature sensor 25 fixedly connected with the air outlet, and the temperature in the plurality of air supply temperature control chambers 2 is sequentially increased from the direction far away from the film inlet roller 12; the temperature sensor 25 monitors the temperature of the drying airflow, and the temperature in each drying unit 11 is raised in sequence, so that the slow dissipation of the moisture on the surface of the coating is facilitated, the shrinkage phenomenon caused by the too fast dissipation of the moisture is avoided, and the drying quality of the coating is improved.

Referring to fig. 1, a filter screen 24 is fixed on the air outlet 23 through a bolt, and the filter screen 24 filters dust mixed in air, so that on one hand, the dust is prevented from entering the drying unit 11 to cause poor drying quality, on the other hand, the possibility of dust explosion is reduced, and the safety of the oven is improved.

Referring to fig. 1, an air outlet assembly 17 is arranged in the drying unit 11, and the air flow passes through the air outlet assembly 17, so that the air flow flows stably and the air flow can uniformly dry the coating; the top of the drying unit 11 is provided with a communicated exhaust chamber 3, the top of the exhaust chamber 3 is provided with a communicated waste gas discharge pipe 33, waste gas flows upwards and enters the exhaust chamber 3 from the top of the drying unit 11, and subsequent treatment is carried out through the waste gas discharge pipe 33, so that on one hand, the increase of humidity in the drying chamber caused by the retention of the waste gas in the drying chamber is avoided, and the drying quality is reduced; on the other hand, the subsequent waste gas treatment is convenient, and the environment is more protected.

Referring to fig. 1 and 2, the air outlet assembly 17 includes two air outlet plates 171 fixedly connected to the bottom of the drying unit 11 and a connecting plate 172 fixedly connected to the tops of the two air outlet plates 171, the air outlet plates 171 are provided with a plurality of rows of uniformly distributed air outlet holes 173, the air outlet plates 171 are obliquely arranged, the two air outlet plates 171 and the connecting plate 172 are arranged in a frustum shape, and the air outlet plates 171 gather together the air flow to reduce energy loss of the air flow; the airflow flowing direction is vertical to the plane of the coating of the base material, so that the phenomenon that the coating moves on the base material due to the inclination of the airflow blowing direction to cause the quality of the coating to generate defects is avoided; the air outlets 173 are uniformly arranged, so that the air flow distribution is more uniform, and the drying quality is improved.

Referring to fig. 2, the air deflectors 174 are disposed on opposite sides of the two air outlet plates 171, the air deflectors 174 are horizontally disposed, and the two adjacent air deflectors 174 provide a buffer space for air flow, so that the air flow can smoothly flow out from the air outlet 173, and drying quality is improved.

Referring to fig. 1, a positioning plate 141 is disposed on one side of the outer wall of the drying chamber 1 close to the film feeding roller 12, and the film feeding roller 12 and the turning roller 14 are rotatably connected to the positioning plate 141. The bottom of drying chamber 1 is equipped with a plurality of and passes membrane roller 15 down, passes membrane roller 15 down and is located two adjacent drying unit's baffle 111 departments, and drying unit 11 top is equipped with a plurality of and goes up membrane roller 16. Through the cooperation use of turning to roller 14, lower membrane roller 15 and upload membrane roller 16 for the one side of substrate attached coating is towards air outlet 23, and dry air current and coating direct contact improve drying quality and improve drying efficiency. Go up membrane roller 16 and pass down 1 horizontal direction both sides of membrane roller 15 drying chamber and stagger and arrange for the substrate is the S-shaped setting in drying chamber 1, has increased the drying length of substrate in drying unit 11, shortens drying time and compromises drying quality.

Referring to fig. 1, a first collecting groove 143 is fixedly connected to the positioning plate 141, the first collecting groove 143 is located below the steering roller 14, a first scraper 142 is fixedly connected to the inside of the first collecting groove 143, the first scraper 142 abuts against the steering roller 14, the first scraper 142 cleans a coating attached to the surface of the steering roller 14, the first collecting groove 143 collects the scraped coating, and the scraped coating can be recycled in a coating process, so that economic benefits are improved.

Referring to fig. 3, a second collecting tank 18 is fixedly connected to one side of the connecting plate 172 close to the upper film conveying roller 15, a second scraper 181 is arranged in the second collecting tank 18, the second scraper 181 abuts against the upper film conveying roller 16, and the second scraper 181 removes the paint attached to the surface of the upper film conveying roller 16, so that the possibility of uneven coating thickness is reduced; the second collecting tank 18 is charged with static electricity, and the second collecting tank 18 collects coating powder dried by electrostatic adsorption, so that the problem that the coating film forming quality is poor due to the fact that the powder is attached to the surface of a coating is avoided.

Referring to fig. 1 and 4, a plurality of air pipes 31 are arranged on the exhaust chamber 3, the air pipes 31 are communicated with the air supply temperature control chamber 2, one-way explosion-proof valves 32 are arranged on the air pipes 31, the one-way explosion-proof valves 32 have a guiding effect on waste air in the exhaust chamber, the waste air flows into the air supply temperature control chamber 2 from the air pipes 31 in one way, the waste air is recycled, and energy is saved.

Referring to fig. 1, the outer wall of the drying chamber 1 is provided with a heat preservation layer 5, the heat preservation layer 5 is filled with glass wool boards, and the heat preservation layer 5 reduces heat loss and saves energy.

Referring to fig. 5, one side of the drying unit 11 away from the gas pipe 31 is provided with a detachable plate 4, the detachable plate 4 is fixed with the drying unit 11 through a bolt, the detachable plate 4 facilitates the drying unit 11 to clean the inside, and the film quality is improved.

The specific implementation mode is as follows: the variable frequency fan 21 transmits fresh air into the air supply and temperature control chamber 2, the fresh air is heated by the electric heating plate 22 in the air supply and temperature control chamber 2, flows to the air outlet 23 along the arrangement direction of the electric heating plate 22, dust mixed in the fresh air is filtered by the filter screen 24, clean hot air flows into the air outlet assembly 17 from the air outlet 23, is buffered by the air outlet deflector 174, stable air flows out from the air outlet 173, the temperature in the air supply and temperature control chamber 2 is sequentially raised from the direction far away from the film inlet roller 12, the coating is uniformly dried, and the film forming quality is improved; the exhaust gas is discharged into the exhaust chamber 3 through the exhaust pipe 191, and flows back into the air supply temperature control chamber 2 again through the air pipe 31 to be mixed with fresh air, thereby completing the energy circulation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a coating machine oven, includes drying chamber (1), is located into membrane roller (12) and play membrane roller (13) of drying chamber (1) outer wall both sides, be equipped with a plurality of stoving units (11) in drying chamber (1), stoving unit (11) are separated by baffle (111) and are formed its characterized in that: the adjacent drying units (11) are communicated, the bottom of each drying unit (11) is provided with an air supply temperature control chamber (2), the top of each air supply temperature control chamber (2) is provided with an air outlet (23) communicated with the bottom of the drying chamber (1), and an air outlet assembly (17) fixedly connected with the air outlet (23) is arranged in each drying unit (11); the top of each drying unit (11) is provided with a communicated exhaust chamber (3), and the top of each exhaust chamber (3) is provided with a communicated exhaust gas discharge pipe (33).

2. A coater oven as claimed in claim 1 wherein: the bottom of drying chamber (1) is equipped with a plurality of lower membrane rollers (15) that pass, the top of stoving unit (11) is equipped with a plurality of membrane rollers (16) that pass on, it is located stoving unit (11) unit to pass on membrane roller (16), pass down baffle (111) department that membrane roller (15) are located two adjacent stoving units (11), air-out subassembly (17) are located the below of uploading membrane roller (16), air-out subassembly (17) include with two play aerofoil (171) of stoving unit (11) bottom fixed connection, with connecting plate (172) of the top fixed connection of two play aerofoil (171), go out aerofoil (171) slope setting, two play aerofoil (171) are frustum shape setting with connecting plate (172), it has a plurality of rows of evenly distributed's exhaust vent (173) to open air-out aerofoil (171).

3. A coater oven as claimed in claim 2 wherein: and air guide plates (174) are arranged on the opposite sides of the two air outlet plates (171), and the air guide plates (174) are horizontally arranged.

4. A coater oven as claimed in claim 3 wherein: air supply accuse greenhouse (2) are equipped with a plurality of electric heating board (22), electric heating board (22) parallel alternate setting is in the both sides of air supply accuse greenhouse (2) vertical direction, be equipped with frequency conversion fan (21) on the lateral wall of air supply accuse greenhouse (2).

5. A coater oven as claimed in claim 4 wherein: the temperature in the air supply temperature control chambers (2) is sequentially increased from the direction far away from the film feeding roller (12), and the air outlet (23) is provided with a temperature sensor (25) fixedly connected with the air outlet.

6. A coater oven as claimed in claim 4 wherein: the exhaust chamber (3) is provided with a plurality of air pipes (31), the air pipes (31) are communicated with the air supply temperature control chamber (2), and the air pipes (31) are provided with one-way explosion-proof valves (32).

7. A coater oven as claimed in claim 1 wherein: and a heat-insulating layer (5) is arranged on the outer wall of the drying chamber (1).

8. A coater oven as claimed in claim 1 wherein: the air outlet (23) is provided with a filter screen (24) which is detachably connected.

9. A coater oven as claimed in claim 2 wherein: the surface of the connecting plate (172) close to the film uploading roller (16) is provided with a second collecting groove (18), a second scraper blade (181) is arranged in the second collecting groove (18), and one end, away from the second collecting groove (18), of the second scraper blade (181) is abutted to the film uploading roller (16).

10. A coater oven as claimed in claim 9 wherein: one side of the drying unit (11) far away from the gas pipe (31) is provided with a detachable plate (4).