CN212339785U

CN212339785U - Hot air circulating device of drying furnace

Info

Publication number: CN212339785U
Application number: CN202021025222.6U
Authority: CN
Inventors: 翟强军
Original assignee: Taicang Yingkun Machinery Equipment Co ltd
Current assignee: Taicang Yingkun Machinery Equipment Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-01-12
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a hot air circulation device of a drying furnace, which comprises a drying furnace body, a furnace door is arranged on the front side of the drying furnace body, a handle is arranged on the front side of the furnace door, a control box body is fixedly arranged on the right side wall of the drying furnace body, an alarm is arranged on the top of the control box body, the temperature in the furnace is sensed through a heat collecting plate, when the temperature rises, a bimetallic strip is heated and deformed, when the set limit temperature is reached, a contact is contacted with a socket, so that an air exchange channel is started through the control box body, a coil is electrified to generate a magnetic field, an iron core is subjected to the leftward force of the magnetic field, a piston is pushed by a push rod to move leftward to a first air guide pipe position, so that a spring is extruded, at the time, a hot air circulation system is closed, hot air is led out from a second air guide pipe, the, resource waste is prevented.

Description

Hot air circulating device of drying furnace

Technical Field

The utility model relates to a drying furnace technical field specifically is a heated air circulation device of drying furnace.

Background

Hot air drying is one of modern drying methods, and is a drying method for blowing hot air into an oven or a drying chamber to accelerate air flow so as to strengthen the heat and mass transfer process. The hot air circulation drying furnace is a hot air circulation system, adopts a fan circulation air supply mode, an air source sends hot air to a drying chamber through a heater by a circulation fan, the hot air returns to a blast chamber through the drying chamber, the used air is sucked into the circulation fan to be circulated again, and the air circulation has the advantages of high drying efficiency and energy conservation.

Chinese patent discloses a heated air circulation device of drying oven (grant publication No. cn201820967140.x), this patent technique can be with return air duct and air-supply line intercommunication, reduce equipment, and the cost is saved, and have even stoving, all-round stoving's advantage, but because the air heater lasts the heating, the hot-blast long-time circulation, probably lead to the interior high temperature of drying oven, thereby the phenomenon of excessive drying appears, current drying device does not have the heat monitoring function, can not in time change the heat dissipation wind channel when the temperature is higher than the limit value in the drying oven, and do not have alarming function, there is certain potential safety hazard. Accordingly, those skilled in the art have provided a hot wind circulating apparatus of a drying oven to solve the problems set forth in the above background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heated air circulation device of drying furnace to current drying device who proposes in solving above-mentioned background does not have heat monitoring function, can not in time change the heat dissipation wind channel when the interior temperature of drying furnace is higher than the limit value, and does not have alarming function's problem.

In order to achieve the above object, the utility model provides a following technical scheme:

a hot air circulating device of a drying furnace comprises a drying furnace body, wherein a furnace door is arranged on the front side of the drying furnace body, a handle is arranged on the front side of the furnace door, a control box body is fixedly arranged on the right side wall of the drying furnace body, an alarm is arranged at the top of the control box body, a temperature sensing device is fixedly arranged at the top of the drying furnace body, an exhaust fan is arranged on the right side of the top of the drying furnace body, an air exchange channel is arranged at the top of the exhaust fan, a first air guide pipe is arranged on the left side of the air exchange channel, a second air guide pipe is arranged on the right side of the air exchange channel, a waste heat collecting device is arranged at one end, away from the air exchange channel, of the second air guide pipe, a water storage tank is arranged inside the waste heat collecting device, a water outlet valve is arranged, the air heater is characterized in that a filter screen is arranged on the left side wall of the air heater, an air storage plate is arranged at the top of the air heater, a spray head is arranged at the top of the air storage plate, a drying rack is transversely arranged at the middle position inside the drying furnace body, and a filter plate is arranged above the drying rack relatively inside the drying furnace body.

As a further aspect of the present invention: the handle is the lower material of heat conductivity, and its surface is provided with anti-skidding line, through the handle that sets up the lower material of heat conductivity, prevents to scald the staff, prevents through setting up anti-skidding line that the staff hand is smooth.

As a further aspect of the present invention: the temperature sensing device comprises a heat collecting plate, a bimetallic strip is fixedly mounted on the left side of the top of the heat collecting plate, a socket is arranged on the right side of the top of the heat collecting plate, a contact is arranged at the bottom of the bimetallic strip opposite to the socket, the temperature in the furnace is sensed through the heat collecting plate, the bimetallic strip is heated and deformed when the temperature rises, and when the temperature reaches a set limit temperature, the contact is in contact with the socket, so that an alarm and an air change channel are started through a control box body.

As a further aspect of the present invention: the air exchange channel comprises an air exchange barrel, a piston is arranged in the air exchange barrel, a coil is arranged on the right side wall of the air exchange barrel, a push rod is arranged on the right side wall of the piston, an iron core is arranged on the right side wall of the push rod relative to the position of the coil, a spring is arranged on the left side wall of the air exchange barrel, when the temperature in the furnace reaches a limit value, the coil is controlled to be electrified through a temperature sensing device to generate a magnetic field, the iron core is subjected to a leftward force of the magnetic field, the piston is pushed to move leftwards to the position of a first air guide pipe through the push rod to extrude the spring, at the moment, a hot air circulating system is closed, hot air is led out from a second air guide pipe, when the temperature in the furnace is reduced, the coil is powered off, and.

As a further aspect of the present invention: the second air guide pipe extends to the inside of the waste heat collecting device and is wound on the surface of the water storage tank in a threaded manner, and the second air guide pipe is wound on the surface of the water storage tank in a threaded manner, so that water in the water storage tank is heated, and resource waste is prevented.

As a further aspect of the present invention: the first air guide pipe extends to the inside of the drying furnace body, the end part of the first air guide pipe is provided with a wind collecting cover, the wind collecting cover is in a circular truncated cone shape, and the collecting area of the air is increased by the arrangement of the circular truncated cone-shaped wind collecting cover.

As a further aspect of the present invention: the sealing gasket is arranged at the connecting position of the first air guide pipe and the drying furnace body, the sealing gasket is arranged at the connecting position of the second air guide pipe and the waste heat collecting device, hot air is prevented from leaking out through the sealing gasket, and the air tightness of the device is improved.

As a further aspect of the present invention: the temperature sensing device and the air exchange channel are electrically connected, the temperature sensing device and the alarm are electrically connected, when the temperature in the furnace is too high, the air exchange channel is controlled through the temperature sensing device, the hot air circulation is stopped and the furnace returns, the waste heat is recovered through the waste heat collecting device, the resource waste is prevented, the alarm is started simultaneously, the worker is timely reminded to check the condition in the furnace, and the phenomenon of excessive drying is prevented.

Compared with the prior art, the beneficial effects of the utility model are that:

1. open the furnace gate through the handle, the article that will treat the stoving are placed and are dried with the frame of drying, handle through setting up the lower material of heat conductivity, prevent scalding the staff, prevent that the staff hand from smooth through setting up anti-skidding line, start the air heater through the control box, filter outside air through the filter screen, the air heater lets in hot-blast air storage plate, dry article through the shower nozzle, start the air exhauster, take out the inside steam of drying furnace body through the air-collecting cover, inside leading-in drying furnace body once more through first guide duct, realize heated air circulation, improve drying efficiency, through setting up sealed the pad, prevent hot-blast leakage, improve device's gas tightness.

2. Temperature in the induction furnace through the thermal-arrest board, when the temperature risees, the bimetallic strip is heated and is out of shape, when reaching and setting for the limiting temperature, contact and socket contact this moment, thereby start the wind passageway through the control box, the coil circular telegram this moment, produce magnetic field, the iron core receives the power left in magnetic field, promote the piston through the push rod and remove to first guide duct position left, thereby extrude the spring, hot air circulating system closes this moment, hot-blast follows the derivation of second guide duct, through being the screw thread form winding on the storage water tank surface with the second guide duct, thereby heat the water in the storage water tank, prevent the wasting of resources.

3. And meanwhile, the alarm is started, the working personnel are timely reminded to check the condition in the furnace, the phenomenon of excessive drying is prevented, when the temperature in the furnace is reduced, the coil is powered off, the piston returns to the position of the second air guide pipe under the action of the elastic potential energy of the spring, the hot air circulating system continues to operate, and the intelligent degree of the device is improved.

Drawings

Fig. 1 is a schematic structural view of a hot air circulating apparatus of a drying oven.

Fig. 2 is a schematic view of an internal structure of a hot air circulating apparatus of a drying oven.

Fig. 3 is a schematic structural view of a temperature sensing device in a hot air circulating device of a drying oven.

FIG. 4 is a schematic structural diagram of a temperature sensing device in a heated air circulation device of a drying oven after thermal deformation.

Fig. 5 is a schematic view of an air exchange channel structure in a hot air circulation device of a drying furnace.

Fig. 6 is a schematic view of the structure of the air change channel in the hot air circulation device of the drying oven in the power-on state.

In the figure: 1. a drying furnace body; 2. a furnace door; 3. a handle; 4. a control box body; 5. an alarm; 6. a temperature sensing device; 7. an exhaust fan; 8. a ventilation channel; 9. a first air duct; 10. a second air duct; 11. a waste heat collecting device; 12. a water storage tank; 13. a water outlet valve; 14. a wind collecting cover; 15. a gasket; 16. a filter plate; 17. a drying rack; 18. a filter screen; 19. a hot air blower; 20. a gas storage plate; 21. a spray head; 22. a heat collecting plate; 23. a bimetal; 24. a contact; 25. a socket; 26. air changing cylinders; 27. a coil; 28. an iron core; 29. a push rod; 30. a piston; 31. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, in an embodiment of the present invention, a hot air circulation device of a drying oven includes a drying oven body 1, a front side of the drying oven body 1 is provided with an oven door 2, the front side of the oven door 2 is provided with a handle 3, the handle 3 is made of a material with low thermal conductivity, and the surface thereof is provided with anti-slip patterns, by providing the handle 3 made of a material with low thermal conductivity, a worker is prevented from being scalded, by providing the anti-slip patterns, the worker is prevented from slipping, a control box 4 is fixedly installed on a right side wall of the drying oven body 1, a top of the control box 4 is provided with an alarm 5, a top of the drying oven body 1 is fixedly installed with a temperature sensing device 6, the temperature sensing device 6 includes a heat collecting plate 22, a bimetallic strip 23 is fixedly installed on a left side of the top of the heat collecting plate 22, a socket, the temperature in the oven is sensed through the heat collecting plate 22, when the temperature rises, the bimetallic strip 23 is deformed by heat, when the temperature reaches a set limit temperature, the contact 24 is contacted with the socket 25, so that the alarm 5 and the ventilation channel 8 are started through the control box body 4, the right side of the top of the drying oven body 1 is provided with the exhaust fan 7, the top of the exhaust fan 7 is provided with the ventilation channel 8, the left side of the ventilation channel 8 is provided with the first air guide pipe 9, the right side of the ventilation channel 8 is provided with the second air guide pipe 10, the ventilation channel 8 comprises the ventilation cylinder 26, the inside of the ventilation cylinder 26 is provided with the piston 30, the right side wall of the ventilation cylinder 26 is provided with the coil 27, the right side wall of the piston 30 is provided with the push rod 29, the right side wall of the push rod 29 is provided with the iron core 28 opposite to the position of the coil 27, the left side wall of the ventilation cylinder 26 is, generating a magnetic field, the iron core 28 is forced leftwards by the magnetic field, the push rod 29 pushes the piston 30 to move leftwards to the position of the first air guiding pipe 9, thereby extruding the spring 31, at the moment, the hot air circulating system is closed, hot air is led out from the second air guiding pipe 10, when the temperature in the furnace is reduced, the coil 27 is powered off, the piston 30 returns to the position of the second air guiding pipe 10 under the action of the elastic potential energy of the spring 31, the hot air circulating system continues to operate, the end of the second air guiding pipe 10 far away from the air exchange channel 8 is provided with the waste heat collecting device 11, the water storage tank 12 is arranged inside the waste heat collecting device 11, the second air guiding pipe 10 extends to the inside of the waste heat collecting device 11 and is wound on the surface of the water storage tank 12 in a threaded manner, the second air guiding pipe 10 is wound on the surface of the water storage tank 12 in a threaded manner, thereby heating the water, the first air duct 9 extends to the inside of the drying furnace body 1, the end part of the first air duct is provided with an air collecting cover 14, the air collecting cover 14 is in a circular truncated cone shape, the collection area of air is increased by arranging the circular truncated cone-shaped air collecting cover 14, the connecting position of the first air duct 9 and the drying furnace body 1 is provided with a sealing gasket 15, the connecting position of the second air duct 10 and the waste heat collection device 11 is provided with the sealing gasket 15, hot air leakage is prevented by arranging the sealing gasket 15, the air tightness of the device is improved, the lower side wall of the inside of the drying furnace body 1 is fixedly provided with a hot air blower 19, the left side wall of the hot air blower 19 is provided with a filter screen 18, the top of the hot air blower 19 is provided with an air storage plate 20, the top of the air storage plate 20 is provided with a spray nozzle 21, the middle position of the inside of the drying furnace body 1 is transversely provided with a, temperature-sensing device 6 and alarm 5 pass through electric connection, and when the stove internal temperature was too high, through temperature-sensing device 6 control ventilation passageway 8, stop heated air circulation time of returning to the stove, retrieve the waste heat through waste heat collection device 11, prevent the wasting of resources, start alarm 5 simultaneously, in time remind the staff to inspect the condition in the stove, prevent the phenomenon of excessive stoving.

The utility model discloses a theory of operation is:

when the utility model is used, the door 2 is opened by the handle 3, the object to be dried is placed on the drying rack to be dried, the worker is prevented from being scalded by arranging the handle 3 made of the material with lower heat conductivity, the worker is prevented from slipping by arranging the anti-slip lines, the hot air blower 19 is started by the control box body 4, the outside air is filtered by the filter screen 18, the hot air is introduced into the air storage plate 20 by the hot air blower 19, the object is dried by the spray head 21, the exhaust fan 7 is started, the hot air in the drying furnace body 1 is extracted by the air collecting cover 14 and is led into the drying furnace body 1 again by the first air guide pipe 9, the hot air circulation is realized, the drying efficiency is improved, the sealing gasket 15 is arranged to prevent the hot air from leaking, the air tightness of the device is improved, the temperature in the furnace is sensed by the heat collecting plate 22, when the temperature rises, the, the contact 24 contacts with the socket 25, so that the ventilation channel 8 is started through the control box body 4, the coil 27 is electrified to generate a magnetic field, the iron core 28 is subjected to a force of the magnetic field to the left, the piston 30 is pushed by the push rod 29 to move to the left to a position of the first air guide pipe 9, thereby pressing the spring 31, at this time, the hot air circulating system is closed, the hot air is guided out from the second air guiding pipe 10, by winding the second air guiding pipe 10 on the surface of the water storage tank 12 in a screw shape, thereby heating the water in the water storage tank 12, preventing the waste of resources, simultaneously starting the alarm 5, reminding the staff to check the condition in the furnace in time, the phenomenon of over drying is prevented, when the temperature in the furnace is reduced, the coil 27 is powered off in the same way, the piston 30 returns to the position of the second air guide pipe 10 under the action of the elastic potential energy of the spring 31, and the hot air circulating system continues to operate, so that the intelligent degree of the device is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A hot air circulating device of a drying furnace comprises a drying furnace body (1) and is characterized in that a furnace door (2) is arranged on the front side of the drying furnace body (1), a handle (3) is arranged on the front side of the furnace door (2), a control box body (4) is fixedly installed on the right side wall of the drying furnace body (1), an alarm (5) is arranged at the top of the control box body (4), a temperature sensing device (6) is fixedly installed at the top of the drying furnace body (1), an exhaust fan (7) is arranged on the right side of the top of the drying furnace body (1), an air exchange channel (8) is arranged at the top of the exhaust fan (7), a first air guide pipe (9) is arranged on the left side of the air exchange channel (8), a second air guide pipe (10) is arranged on the right side of the air exchange channel (8), and a waste heat collecting device (11) is arranged at one end, far away from the, the inside of waste heat collection device (11) is provided with storage water tank (12), the right side wall bottom of storage water tank (12) is provided with outlet valve (13), the inside lower lateral wall fixed mounting of drying furnace body (1) has air heater (19), the left side wall of air heater (19) is provided with filter screen (18), the top of air heater (19) is provided with air storage plate (20), the top of air storage plate (20) is provided with shower nozzle (21), the inside intermediate position of drying furnace body (1) transversely is provided with stoving frame (17), the inside top of stoving frame (17) relatively of drying furnace body (1) is provided with filter (16).

2. The hot air circulating apparatus of a drying oven as claimed in claim 1, wherein the handle (3) is a material having a low thermal conductivity and is provided with an anti-slip pattern on its surface.

3. The hot air circulation device of drying oven as claimed in claim 1, wherein said temperature sensing means (6) comprises a heat collecting plate (22), said heat collecting plate (22) is fixedly installed with a bimetal (23) on the left side of the top, said heat collecting plate (22) is provided with a socket (25) on the right side of the top, and said bimetal (23) is provided with a contact (24) on the bottom opposite to the socket (25).

4. The hot air circulation device of the drying oven according to claim 1, wherein the air change channel (8) comprises an air change cylinder (26), a piston (30) is arranged inside the air change cylinder (26), a coil (27) is arranged on the right side wall of the air change cylinder (26), a push rod (29) is arranged on the right side wall of the piston (30), an iron core (28) is arranged on the right side wall of the push rod (29) opposite to the position of the coil (27), and a spring (31) is arranged on the left side wall of the air change cylinder (26).

5. The hot air circulation device of the drying oven according to claim 1, wherein the second air duct (10) extends to the interior of the waste heat collecting device (11) and is wound on the surface of the water storage tank (12) in a threaded manner.

6. The hot air circulation device of the drying oven according to claim 1, wherein the first air duct (9) extends to the inside of the drying oven body (1), and an air collecting cover (14) is disposed at an end of the first air duct, and the air collecting cover (14) is in a circular truncated cone shape.

7. The hot air circulation device of the drying oven according to claim 1, wherein a sealing gasket (15) is arranged at a connecting position of the first air guide pipe (9) and the drying oven body (1), and a sealing gasket (15) is arranged at a connecting position of the second air guide pipe (10) and the waste heat collecting device (11).

8. The hot air circulating device of the drying oven as claimed in claim 1, wherein the temperature sensing device (6) is electrically connected with the air exchanging channel (8), and the temperature sensing device (6) is electrically connected with the alarm (5).