CN218309066U

CN218309066U - Tunnel type compression heat drying tunnel

Info

Publication number: CN218309066U
Application number: CN202222178955.9U
Authority: CN
Inventors: 朱世明; 彭绍明; 蒋鑫; 毛彦儿
Original assignee: Ningbo Baosi Industrial Chain Service Co ltd
Current assignee: Ningbo Baosi Industrial Chain Service Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-01-17
Anticipated expiration: 2032-08-18

Abstract

The utility model provides a tunnel type compression heat drying tunnel, which comprises a bracket, wherein a straight-path type feeding roller way is arranged on the bracket, a drying tunnel is arranged in the middle of the feeding roller way, the left side plate, the right side plate and the top cover plate of the drying tunnel are heat insulation plates, a blast pipe is arranged on the left side plate and/or the right side plate, a plurality of air outlets communicated with the drying tunnel are arranged on the blast pipe, a return air pipe is arranged on the top cover plate, at least one return air inlet communicated with the drying tunnel is arranged on the return air pipe, and a feed inlet and a discharge outlet which are open to the outside are respectively arranged at the front end and the rear end of the drying tunnel; the top outside the drying tunnel is provided with an equipment platform, the equipment platform is provided with at least one compression heat dryer, the air inlet of the compression heat dryer is connected with an air inlet pipe, the air inlet pipe is communicated with an air return pipe, the air outlet of the compression heat dryer is connected with an exhaust pipe, and the exhaust pipe is communicated with an air supply pipe. The feeding roller way can automatically drive the workpiece to enter the drying tunnel, and has high automation degree, small heat energy loss and high drying efficiency.

Description

Tunnel type compression heat drying tunnel

Technical Field

The utility model relates to a technical field of work piece surface drying more exactly relates to a tunnel type compression heat drying tunnel.

Background

After the surface of a machined workpiece is sprayed with the water-based paint, the workpiece needs to be dried at a low temperature below 110 ℃, the exhaust temperature of a double-screw air compressor is just between 90 and 130 ℃, and the workpiece is suitable for low-temperature drying, so that a drying room for drying by using tail gas of the air compressor is available in the prior art. However, the drying room in the prior art needs manpower to carry the workpiece into the drying room, the workpiece is carried out by manpower after drying is completed, the automation degree is low, the labor intensity is high, hot air in the drying room can be dissipated when the workpiece in the drying room is operated by manpower, and the heat energy loss is large.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a hot drying tunnel of tunnel type compression, can drive the work piece automatically and get into the drying tunnel, do not need manpower transport work piece business turn over drying tunnel, degree of automation is high, and heat energy loss is little, and drying efficiency is high.

The technical solution of the utility model is that, a tunnel type compression heat drying tunnel is provided, which comprises a bracket, a straight-channel type feeding roller bed is arranged on the bracket, a drying tunnel is arranged in the middle of the feeding roller bed, the drying tunnel is provided with a left side plate, a right side plate and a top cover plate, the left side plate, the right side plate and the top cover plate are both thermal insulation plates, an air supply pipe is arranged on the left side plate and/or the right side plate, a plurality of air outlets communicated with the drying tunnel are arranged on the air supply pipe, the air outlets are all distributed on the lower part of the drying tunnel, a return air pipe is arranged on the top cover plate, at least one return air inlet communicated with the drying tunnel is arranged on the return air pipe, and a feed inlet and a discharge outlet which are open to the outside are respectively arranged at the front end and the rear end of the drying tunnel; the top outside the drying tunnel is provided with an equipment platform, the equipment platform is provided with at least one compression heat dryer, the air inlet of the compression heat dryer is connected with an air inlet pipe, the air inlet pipe is communicated with an air return pipe, the air outlet of the compression heat dryer is connected with an exhaust pipe, and the exhaust pipe is communicated with an air supply pipe.

Compared with the prior art, the utility model discloses a tunnel type compression heat drying tunnel has following advantage: the workpiece is automatically conveyed from the feeding port into the drying tunnel by the feeding roller way, the lower part of the drying tunnel is provided with the air outlet, hot air provided by the compression heat dryer is blown to the workpiece to be dried in the drying tunnel from one side or two sides of the drying tunnel through each air outlet, heat is upwards diffused along with air flow, and is sucked into the return air pipe from the return air port and enters the compression heat dryer for cyclic utilization, and the heat utilization rate is high; the workpieces are automatically conveyed out of the drying tunnel from the discharge port by the feeding roller way after being dried in the drying tunnel, the workpieces do not need to be carried in and out of the drying tunnel by manpower, the automation degree is high, the temperature in the drying tunnel is stable, the heat loss is less, the temperature can be quickly raised, and the drying efficiency is high; the compression heat dryer is arranged at the top outside the drying tunnel, so that the floor area of the equipment is saved. In addition, the compression heat dryer can adopt an oil-free double-screw air compressor, the exhaust oil content of the oil-free double-screw air compressor is extremely low, the drying environment can be ensured to be completely nontoxic and harmless to the water-based paint, and the drying process is safe.

Preferably, the left side plate and the right side plate are respectively provided with an air supply pipe, and the air supply pipes are respectively provided with a plurality of air outlets communicated with the interior of the drying tunnel; the equipment bench is provided with two compression heat dryers, the air inlet pipes of the two compression heat dryers are communicated with the return air pipe, and the exhaust pipes of the two compression heat dryers are communicated with the two air supply pipes in a one-to-one correspondence mode. By adopting the structure, hot air provided by the two compression heat dryers is respectively blown to the workpiece to be dried in the drying tunnel from the air outlets on the air supply pipes on the two sides of the drying tunnel, the heat energy is uniformly distributed, the uniform heating on the surface of the workpiece is facilitated, and the drying speed is approximately equal.

Preferably, the air supply pipe is arranged close to the lower part of the outer side wall of the drying tunnel, and the side wall of the drying tunnel where the air supply pipe is arranged is provided with a vent hole which is in butt joint with the air outlet of the air supply pipe. By adopting the structure, the air supply pipe is arranged close to the lower part of the outer side wall of the drying tunnel, so that the internal space of the drying tunnel is not occupied, and the space in the drying tunnel can be fully used for placing workpieces to be dried.

Preferably, a wind shield is arranged at the upper part of the feed inlet. By adopting the structure, the wind shield is positioned at the upper part of the feeding hole, the height is based on the condition that the workpiece is not hindered from entering the drying tunnel, and the wind shield can reduce the heat in the drying tunnel to a certain extent and disperse from the feeding hole, thereby being beneficial to the temperature stability in the drying tunnel.

Preferably, the discharge port is provided with a heat insulation door consisting of a plurality of heat insulation curtains. By adopting the structure, when the workpiece is automatically conveyed out of the drying tunnel from the discharge port by the feeding roller way after being dried in the drying tunnel, the workpiece can smoothly pass through the heat insulation door consisting of a plurality of heat insulation curtains, and the heat insulation door can reduce the heat in the drying tunnel from being dissipated from the discharge port, thereby being beneficial to the temperature stability in the drying tunnel.

Preferably, an air outlet of the compression heat dryer is provided with a stop valve, and the stop valve is used for controlling the air outlet to communicate or block the exhaust pipe. By adopting the structure, the stop valve can quickly build pressure of the compression heat dryer, and the temperature of the exhaust gas can be increased only after the exhaust outlet reaches a certain exhaust pressure; when the compression heat dryer is started, the stop valve is turned off first to block the exhaust port from exhausting the exhaust pipe, and after the exhaust temperature is stable, the stop valve is turned on to enable the exhaust port to communicate with the exhaust pipe and supply heat to the drying tunnel, so that the drying tunnel can be rapidly heated.

Preferably, a silencer is disposed on each exhaust pipe of the compression heat dryer. By adopting the structure, the exhaust pipe of the compression heat dryer can generate great noise when exhausting, and the silencer can reduce the noise of the exhaust pipe to be within decibel suitable for workers to operate.

Preferably, a temperature controller is arranged on the outer side wall of the drying tunnel, at least one temperature sensor in signal connection with the temperature controller is arranged in the drying tunnel, and the temperature sensor is positioned below the air return inlet; the compression heat dryer is driven by a variable frequency motor, and the temperature controller is in signal connection with the variable frequency motor. By adopting the structure, the temperature sensor is positioned below the air return opening, so that the temperature controller can obtain the accurate temperature in the drying tunnel and the accurate air inlet temperature of the compression heat dryer, once the temperature in the drying tunnel is overhigh, the exhaust volume of the compression heat dryer can be reduced by reducing the working frequency of the compression heat dryer, and the heat provided by the compression heat dryer is further reduced; the automatic frequency conversion of the compression heat dryer can be controlled by the temperature controller.

Preferably, an alarm is arranged on the outer side wall of the drying tunnel, and a sensor which is connected with the alarm in a signal mode and is used for detecting the concentration of the volatile organic compounds is arranged in the drying tunnel. By adopting the structure, the alarm can alarm according to the detected concentration of the volatile organic compound in the drying tunnel, so that the harm to the water-based paint on the surface of the workpiece caused by the overhigh concentration of the volatile organic compound in the drying tunnel is avoided, and the harm to the health of workers caused by the drying operation environment is also avoided.

Preferably, the support is provided with a roller way motor and a transmission chain mechanism, the roller way motor drives the transmission chain mechanism to operate, and the transmission chain mechanism is in transmission connection with the feeding roller way. By adopting the structure, the speed of conveying the workpiece by the feeding roller way and the drying time of the workpiece in the drying channel can be controlled by controlling the working frequency of the roller way motor.

Drawings

Fig. 1 is a schematic view of a side structure of the tunnel-type compressed heat drying tunnel of the present invention.

Fig. 2 is a schematic view of the other side structure of the tunnel-type compressed heat drying tunnel of the present invention.

Fig. 3 is a schematic view of the internal structure of the tunnel-type compressed heat drying tunnel of the present invention.

As shown in the figure: 1. the device comprises a drying tunnel, 1-1 part of a drying tunnel, a heat insulation plate, 1-2 parts of an air supply pipe, 1-21 parts of an air outlet, 1-3 parts of a feeding hole, 1-31 parts of a wind shield, 1-4 parts of a discharging hole, 1-41 parts of a heat insulation curtain, 1-5 parts of a return air pipe, 1-51 parts of a return air inlet, 1-6 parts of a feeding roller way, 1-7 parts of a support, 2 parts of a compression heat dryer, 2-1 parts of an exhaust pipe, 2-2 parts of a stop valve, 2-3 parts of a silencer, 2-4 parts of an air inlet pipe, 3 parts of an access ladder, 4 parts of a temperature controller, 5 parts of an alarm, 6 parts of an equipment platform, 7 parts of a roller way motor, 8 parts of a transmission chain mechanism.

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification.

In the drawings, the thickness, size, and shape of an object have been slightly exaggerated for convenience of explanation. The figures are purely diagrammatic and not drawn to scale.

It will be further understood that the terms "comprises," "comprising," "includes," "including," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Further, when a statement such as "… at least one" appears after the list of listed features, the entire listed feature is modified rather than modifying individual elements in the list.

Example 1:

as shown in fig. 1 to 3, the tunnel type compression heat drying tunnel of the present invention comprises supports 1 to 7, the supports 1 to 7 are provided with straight feeding roller ways 1 to 6, roller way motors 7 and transmission chain mechanisms 8, the roller way motors 7 and the transmission chain mechanisms 8 are located below the feeding roller ways 1 to 6, the transmission chain mechanisms 8 are in transmission connection with the feeding roller ways 1 to 6, and the roller way motors 7 drive the transmission chain mechanisms 8 to operate.

The middle section of the feeding roller way 1-6 is provided with a drying tunnel 1, the drying tunnel 1 is provided with a left side plate, a right side plate and a top cover plate, the left side plate, the right side plate and the top cover plate are both built by a heat insulation plate 1-1, the outer sides of the left side plate and the right side plate of the drying tunnel 1 are respectively provided with an air supply pipe 1-2, the air supply pipe 1-2 is arranged close to the lower part of the outer side wall of the drying tunnel 1, the air supply pipe 1-2 is provided with a plurality of air outlets 1-21, the side wall of the drying tunnel 1 where the air supply pipe 1-2 is located is provided with air vents which are in butt joint with the air outlets 1-21 of the air supply pipe 1-2, the air supply pipe 1-2 is communicated with the drying tunnel 1, and the communicated air outlets 1-21 are all distributed at the lower part of the drying tunnel 1. The top cover plate is provided with a return air pipe 1-5, the return air pipe 1-5 is provided with three return air inlets 1-51 which are arranged at intervals, and the return air pipe 1-5 is communicated with the interior of the drying tunnel 1 through the return air inlets 1-51. The front end of the drying tunnel 1 is provided with a feed port 1-3 which is open to the outside, the upper part of the feed port 1-3 is provided with a wind shield 1-31, and the height of the wind shield 1-31 does not influence the feeding of workpieces. The rear end of the drying tunnel 1 is provided with a discharge port 1-4 which is open to the outside, the discharge port 1-4 is provided with a heat insulation door consisting of a plurality of heat insulation curtains 1-41, and the heat insulation curtains 1-41 can be made of silica gel materials.

The top outside the drying tunnel 1 is provided with an equipment platform 6, the equipment platform 6 is provided with two compression heat drying machines 2, the compression heat drying machines 2 are oil-free double-screw air compressors and are driven by variable frequency motors, and the compression cavities and the surfaces of the male and female rotors of the compression heat drying machines 2 are provided with Teflon coatings. Air inlets 2-4 are connected with air inlets of the two compression heat dryers 2, and the air inlets 2-4 of the two compression heat dryers 2 are communicated with return air pipes 1-5; exhaust outlets of the two compression heat dryers 2 are connected with exhaust pipes 2-1, the exhaust pipe 2-1 of one compression heat dryer 2 is communicated with an air supply pipe 1-2 on the left side plate, and hot air is blown to the workpiece from a left air outlet 1-21 at the lower part of the drying tunnel; an exhaust pipe 2-1 of the other compression heat drying machine 2 is communicated with an air supply pipe 1-2 on the right side plate, and hot air is blown to the workpiece from a right air outlet 1-21 at the lower part of the drying tunnel. The air outlets of the two compression heat dryers 2 are also provided with stop valves 2-2, and the stop valves 2-2 are used for controlling the air outlets to communicate or block the exhaust pipe 2-1; the exhaust pipes 2-1 of the two compression heat dryers 2 are provided with silencers 2-3. Still be provided with the maintenance ladder 3 that falls to the ground on the equipment platform 6, equipment platform 6 overhauls or maintains compression heat drying-machine 2 about the convenience.

The outer side wall of the drying tunnel 1 is provided with a temperature controller 4 and an alarm 5, the drying tunnel 1 is internally provided with two temperature sensors 4-1 in signal connection with the temperature controller 4 and a VOC sensor in signal connection with the alarm 5, the two temperature sensors 4-1 are respectively positioned below two air return ports 1-51, the VOC sensor is also positioned below one air return port 1-51, the temperature sensors 4-1 are used for detecting the temperature in the drying tunnel, and the VOC sensor is used for detecting the concentration of volatile organic compounds in the drying tunnel. The temperature controller 4 is connected with the variable frequency motor by signals.

When the tunnel type compression heat drying tunnel of the utility model is used, the stop valves 2-2 of the two compression heat dryers 2 are firstly cut off, the exhaust port of the compression heat dryer 2 is blocked to exhaust the exhaust pipe 2-1, after the exhaust temperature of the equal compression heat dryer 2 is stable, the stop valves 2-2 are opened, the exhaust port of the compression heat dryer 2 is communicated with the exhaust pipe 2-1 and supplies heat to the two sides of the drying tunnel 1 through the exhaust pipe 2-1, and the heat energy in the drying tunnel is uniformly distributed; the heat insulation boards 1-1 on the side wall and the top of the drying tunnel, the wind shields 1-31 arranged on the upper parts of the feeding ports 1-3 and the heat insulation door consisting of a plurality of heat insulation curtains 1-41 arranged on the discharging ports 1-4 can stabilize the temperature in the drying tunnel, reduce heat loss and quickly raise the temperature.

The workpiece is automatically conveyed into the drying tunnel 1 from the feeding ports 1-3 through the feeding roller ways 1-6, hot air provided by the compression heat dryer 2 is transversely blown to the workpiece to be dried in the drying tunnel through the air outlets 1-21, so that the coating on the surface of the workpiece can be quickly dried and solidified to form a film; meanwhile, heat is upwards diffused along with air flow, is sucked into the air return pipe 1-5 through the air return opening 1-5 and enters the compression heat dryer 2 for cyclic utilization, and the heat utilization rate is high. Meanwhile, the temperature controller 4 acquires accurate temperature in the drying tunnel through the temperature sensor, and once the temperature in the drying tunnel is too high, the temperature controller 4 controls the automatic frequency conversion of the compression heat dryer 2, so that the working frequency of the compression heat dryer is reduced to reduce the displacement of the compression heat dryer, and further the heat provided by the compression heat dryer is reduced.

Example 2:

the tunnel-type compression heat drying tunnel of the embodiment is different from the embodiment 1 in that only one compression heat drying machine 2 is arranged on the equipment platform 6, an air inlet of the compression heat drying machine 2 is connected with an air inlet pipe 2-4, the air inlet pipe 2-4 is communicated with an air return pipe 1-5, an air outlet of the compression heat drying machine 2 is connected with an air exhaust pipe 2-1, the air exhaust pipe 2-1 is provided with two branch pipes which are respectively communicated with air supply pipes 1-2 on the side plates on the left side and the right side, and hot air is simultaneously blown to the workpiece from air outlets 1-21 on the left side and the right side of the lower portion of the drying tunnel. The air outlet of the compression heat dryer 2 is also provided with a stop valve 2-2 for controlling the air outlet to communicate or block the exhaust pipe 2-1, and the exhaust pipe 2-1 is also provided with a silencer 2-3.

The above are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention; the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the spirit and scope of the present invention.

Claims

1. A tunnel type compression heat drying tunnel is characterized by comprising supports (1-7), wherein straight-tunnel type feeding roller ways (1-6) are arranged on the supports (1-7), a drying tunnel (1) is arranged in the middle of the feeding roller ways (1-6), the drying tunnel (1) is provided with a left side plate, a right side plate and a top cover plate, the left side plate, the right side plate and the top cover plate are both thermal insulation plates, air supply pipes (1-2) are arranged on the left side plate and/or the right side plate, a plurality of air outlets (1-21) communicated with the drying tunnel (1) are arranged on the air supply pipes (1-2), the air outlets (1-21) are uniformly distributed at the lower part of the drying tunnel (1), air return pipes (1-5) are arranged on the top cover plate, at least one air return opening (1-51) communicated with the drying tunnel (1) is arranged on the air return pipes (1-5), and the front end and the rear end of the drying tunnel (1) are respectively provided with an outward feeding port (1-3) and a discharging port (1-4); an equipment platform (6) is arranged at the top outside the drying tunnel (1), at least one compression heat dryer (2) is arranged on the equipment platform (6), an air inlet of the compression heat dryer (2) is connected with an air inlet pipe (2-4), the air inlet pipe (2-4) is communicated with an air return pipe (1-5), an air outlet of the compression heat dryer (2) is connected with an exhaust pipe (2-1), and the exhaust pipe (2-1) is communicated with an air supply pipe (1-2).

2. The tunnel type compression heat drying tunnel according to claim 1, characterized in that the left side plate and the right side plate are respectively provided with an air supply pipe (1-2), and the air supply pipes (1-2) are respectively provided with a plurality of air outlets (1-21) communicated with the drying tunnel (1); two compression heat dryers (2) are arranged on the equipment platform (6), air inlet pipes (2-4) of the two compression heat dryers (2) are communicated with air return pipes (1-5), and exhaust pipes (2-1) of the two compression heat dryers (2) are communicated with two air supply pipes (1-2) in a one-to-one correspondence mode.

3. The tunnel type compression heating drying tunnel according to claim 1 or 2, characterized in that the blast pipe (1-2) is closely attached to the lower part of the outer side wall of the drying tunnel (1), and the side wall of the drying tunnel (1) where the blast pipe (1-2) is located is provided with a vent hole butted with the air outlet (1-21) of the blast pipe (1-2).

4. The tunnel-type compression heat drying tunnel according to claim 1 or 2, wherein wind shielding plates (1-31) are provided at upper portions of the feed ports (1-3).

5. A tunnel-type compression-heating drying tunnel according to claim 1 or 2, characterised in that the outfeed opening (1-4) is provided with an insulated door consisting of several insulated curtains (1-41).

6. The tunnel-type compression heat drying tunnel according to claim 1 or 2, wherein the exhaust outlet of the compression heat dryer (2) is provided with a stop valve (2-2), and the stop valve (2-2) is used for controlling the exhaust outlet to communicate with or block the exhaust pipe (2-1).

7. The tunnel-type compression-heat drying tunnel according to claim 1 or 2, characterized in that the exhaust pipes (2-1) of the compression-heat dryer (2) are each provided with a muffler (2-3).

8. The tunnel type compression heating drying tunnel according to claim 1 or 2, characterized in that a temperature controller (4) is arranged on the outer side wall of the drying tunnel (1), at least one temperature sensor (4-1) connected with the temperature controller (4) in signal is arranged in the drying tunnel (1), and the temperature sensor (4-1) is positioned below the air return opening (1-51); the compression heat dryer (2) is driven by a variable frequency motor, and the temperature controller (4) is in signal connection with the variable frequency motor.

9. The tunnel-type compression heating drying tunnel according to claim 1 or 2, characterized in that an alarm (5) is arranged on the outer side wall of the drying tunnel (1), and a sensor connected with the alarm (5) in a signal way and used for detecting the concentration of the volatile organic compounds is arranged in the drying tunnel (1).

10. The tunnel-type compression heat drying tunnel according to claim 1 or 2, wherein the support is provided with a roller bed motor (7) and a transmission chain mechanism (8), the roller bed motor (7) drives the transmission chain mechanism (8) to operate, and the transmission chain mechanism (8) is in transmission connection with the feeding roller beds (1-6).