CN218309068U

CN218309068U - U-shaped compression hot drying channel

Info

Publication number: CN218309068U
Application number: CN202222191273.1U
Authority: CN
Inventors: 陈刚; 朱世明; 蒋鑫; 彭绍明; 毛彦儿
Original assignee: Ningbo Baosi Industrial Chain Service Co ltd
Current assignee: Ningbo Baosi Industrial Chain Service Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-01-17
Anticipated expiration: 2032-08-19

Abstract

The utility model provides a U-shaped compression heat drying tunnel, which comprises a U-shaped drying tunnel and a compression heat dryer; a U-shaped roller way conveying line is arranged at the bottom of the U-shaped drying channel, heat insulation plates are arranged on the inner side wall, the outer side wall and the top of the U-shaped drying channel, a feeding hole and a discharging hole are respectively formed in two ends of the U-shaped drying channel, a hot air pipe is arranged in the U-shaped drying channel, a plurality of air outlets are formed in the hot air pipe, and at least one air return port communicated with the inside of the U-shaped drying channel is formed in the U-shaped drying channel; the air inlet of the compression heat dryer is communicated with the air return inlet, and the air outlet of the compression heat dryer is communicated with the hot air pipe. The roller way conveying line can automatically drive workpieces to enter and exit the drying tunnel, the automation degree is high, the feeding hole and the discharging hole are both located on the same side of the U-shaped drying tunnel, feeding and discharging can be both achieved by the same operator, and labor cost is reduced.

Description

U-shaped compression hot drying channel

Technical Field

The utility model relates to a technical field that water paint was dried, more exactly relate to a hot drying tunnel of U type compression.

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 of below 110 ℃, the exhaust temperature of a double-screw air compressor is just 90-130 ℃, and the drying room is suitable for low-temperature drying, so that the 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 U 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 proposal of the utility model is that a U-shaped compression heat drying tunnel is provided, which comprises a U-shaped drying tunnel and a compression heat drying machine; a U-shaped roller way conveying line is arranged at the bottom of the U-shaped drying channel, heat insulation plates are arranged on the inner side wall, the outer side wall and the top of the U-shaped drying channel, a feeding hole and a discharging hole are respectively formed in two ends of the U-shaped drying channel, a hot air pipe is arranged in the U-shaped drying channel, a plurality of air outlets are formed in the hot air pipe, and at least one air return port communicated with the inside of the U-shaped drying channel is formed in the U-shaped drying channel; the air inlet of the compression heat dryer is communicated with the air return inlet, and the air outlet of the compression heat dryer is communicated with the hot air pipe.

Compared with the prior art, the utility model discloses a hot drying tunnel of U type compression has following advantage: the workpiece is automatically conveyed into the U-shaped drying tunnel from the feed port by the roller bed conveying line; the U-shaped drying tunnel is internally provided with air outlets, hot air provided by the compression heat dryer is blown to the workpieces to be dried in the U-shaped drying tunnel from each air outlet through the hot air pipe, heat is sucked into the compression heat dryer along with air flow from the air return port for cyclic utilization, the heat utilization rate is high, the temperature in the U-shaped drying tunnel is stable, the heat loss is less, the temperature can be quickly raised, and the drying efficiency is high; the work piece is by the automatic U type drying tunnel of carrying out of discharge gate from the roller bed transfer chain after drying in U type drying tunnel, does not need manpower transport work piece business turn over U type drying tunnel, and degree of automation is high, and feed inlet and discharge gate all lie in same one side of U type drying tunnel, and feeding and ejection of compact can both be compromise by same operating personnel, reduce the cost of labor. 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 hot air pipe is arranged at the top in the U-shaped drying tunnel, and the air outlets are opposite to the bottom of the U-shaped drying tunnel in a spaced manner; the air return opening is positioned at the lower part of the U-shaped drying channel, and the air return opening is positioned on the inner side wall or the outer side wall of the U-shaped drying channel. Adopt this structure, the hot-blast bottom in the U type drying tunnel of the top in the U type drying tunnel of follow in the compression heat drying machine provides is down to facing to the U type drying tunnel blows off, in the return air in the U type drying tunnel then transversely inhales the return air mouth towards the lateral wall of U type drying tunnel from the lower part of U type drying tunnel, the air outlet is not direct relative with the return air inlet, avoid air supply and return air direct, so, make the heat can be at the abundant diffusion in top in U type drying tunnel, be favorable to making rapid heating up in the U type drying tunnel. If the air outlet is arranged on the side wall of the U-shaped drying channel, hot air is easy to diffuse out to the feeding hole or the discharging hole along the U-shaped drying channel, heat loss is large, and rapid temperature rise in the U-shaped drying channel is not facilitated.

Preferably, the hot air pipe is arranged in the U-shaped drying tunnel in a U shape, and two sides of the hot air pipe are respectively positioned at two sides in the U-shaped drying tunnel; air outlets are arranged at the two sides and the middle part of the U-shaped hot air pipe; the air return openings are two and are respectively positioned on two sides of the U-shaped drying channel, two air inlet pipes are arranged at the air inlet of the compression heat drying machine, and the two air inlet pipes are communicated with the two air return openings in a one-to-one correspondence mode. By adopting the structure, hot air provided by the compression heat dryer can be blown into the U-shaped drying tunnel from the air outlets at the two sides and the middle part of the U-shaped hot air pipe, so that the heat can be favorably diffused in the U-shaped drying tunnel, the heat is prevented from being concentrated on one side of the U-shaped drying tunnel, and the temperature in the U-shaped drying tunnel is stable and controllable; the two air return openings are respectively positioned at two sides of the U-shaped drying tunnel, so that the heat distributed at two sides of the U-shaped drying tunnel can be recovered.

Preferably, the compression heat dryer is arranged at the concave position of the U-shaped drying tunnel. By adopting the structure, the compression heat dryer is arranged at the concave position of the U-shaped drying channel and can be placed in a sticking manner, so that the floor area of the device is saved.

Preferably, an equipment platform is arranged above the U-shaped drying channel, and the compression heat drying machine is arranged on the equipment platform. By adopting the structure, the compression heat dryer is arranged above the U-shaped drying channel, so that the floor area of the device is saved.

Preferably, the exhaust port of the compression heat dryer is provided with a stop valve for controlling the exhaust port to communicate or block the hot blast pipe. By adopting the structure, the stop valve is arranged to quickly build pressure of the compression heat dryer, and the temperature of the exhaust gas can be increased only when the exhaust port reaches a certain exhaust pressure; the stop valve can be turned off firstly when the compression heat dryer is started, the exhaust port is blocked to exhaust the hot air pipe, and after the exhaust temperature is stable, the stop valve is opened again, so that the exhaust port is communicated with the hot air pipe and supplies heat to the U-shaped drying channel, and the U-shaped drying channel can be rapidly heated.

Preferably, the exhaust port of the compression heat dryer is provided with an exhaust pipe which is communicated with the hot air pipe, and the exhaust pipe is provided with a silencer. 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 U-shaped drying channel, at least one temperature sensor in signal connection with the temperature controller is arranged in the U-shaped drying channel, 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 acquire the accurate temperature in the U-shaped drying tunnel and the air inlet temperature of the compression heat dryer; the automatic frequency conversion of the compression heat dryer can be controlled through a temperature controller; once the temperature in the U-shaped drying tunnel is too high, the exhaust gas volume of the compression heat dryer can be reduced by reducing the operating frequency of the compression heat dryer, thereby reducing the heat provided by the compression heat dryer.

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 a workpiece is not hindered from entering the U-shaped drying tunnel, and the wind shield can reduce the heat in the U-shaped drying tunnel to a certain extent and dissipate from the feeding hole, thereby being beneficial to the temperature stability in the U-shaped 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 U-shaped drying tunnel from the discharge port by the roller conveyor line after being dried in the U-shaped drying tunnel, the workpiece can smoothly pass through the heat insulation door consisting of the plurality of heat insulation curtains, the heat in the U-shaped drying tunnel can be reduced by the heat insulation door, and the heat can be favorably dissipated from the discharge port, so that the temperature stability in the U-shaped drying tunnel is facilitated.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the U-shaped compression heat drying tunnel of the present invention.

Fig. 2 is a schematic view of the internal structure of a U-shaped drying tunnel according to embodiment 1 of the U-shaped compressed heat drying tunnel of the present invention.

Fig. 3 is a schematic view of the hot-blast pipe structure of embodiment 1 of the U-shaped compression heat drying tunnel of the present invention.

Fig. 4 is a schematic structural view of embodiment 2 of the U-shaped compressed hot drying tunnel of the present invention.

As shown in the figure: 1. the device comprises a U-shaped drying tunnel, 1-1 parts of heat insulation boards, 1-2 parts of hot air pipes, 1-21 parts of air outlets, 1-3 parts of feed inlets, 1-31 parts of wind shields, 1-4 parts of discharge outlets, 1-41 parts of heat insulation curtains, 1-5 parts of air return inlets, 1-6 parts of roller conveyor lines, 1-7 parts of supports, 2 parts of compression heat dryers, 2-1 parts of exhaust pipes, 2-2 parts of stop valves, 2-3 parts of silencers, 2-4 parts of air inlet pipes, 3 parts of maintenance ladders, 4 parts of temperature sensors, 5 parts of temperature controllers, 6 parts of equipment stands, 7 parts of roller motors, 8 parts of transmission chain mechanisms.

Detailed Description

In order that the present application may be better understood, various aspects of the present application will be described in greater 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 figures 1 to 3, the U-shaped compression heat drying tunnel of the utility model comprises a U-shaped drying tunnel 1 and a compression heat dryer 2, wherein the U-shaped drying tunnel 1 is arranged on a bracket 1-7, and the compression heat dryer 2 is arranged at the concave position of the U-shaped drying tunnel 1 and is placed close to the ground.

The bottom of the U-shaped drying channel 1 is provided with a U-shaped roller way conveying line 1-6, the inner side wall, the outer side wall and the top of the U-shaped drying channel 1 are provided with heat insulation plates 1-1, and the two ends of the U-shaped drying channel 1 are respectively provided with a feeding port 1-3 and a discharging port 1-4 which are open outwards. The upper parts of the feed inlets 1-3 are provided with wind shields 1-31, and the heights of the wind shields 1-31 do not influence workpiece feeding. 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. A roller way motor 7 and a transmission chain mechanism 8 are arranged below the roller way conveying lines 1-6, the transmission chain mechanism 8 is in transmission connection with the roller way conveying lines 1-6, and the roller way motor 7 drives the transmission chain mechanism 8 to rotate.

The U-shaped drying tunnel 1 is internally provided with a hot air pipe 1-2, the hot air pipe 1-2 is U-shaped and is arranged at the top part in the U-shaped drying tunnel 1, and two sides of the hot air pipe 1-2 are respectively positioned in two sides of the U-shaped drying tunnel 1; the hot air pipe 1-2 is provided with a plurality of air outlets 1-21, and the air outlets 1-21 are distributed at the two sides and the middle part of the U-shaped hot air pipe 1-2 and are opposite to the bottom of the U-shaped drying tunnel 1 in a spaced manner. Two air return openings 1-5 are arranged on the inner side wall of the U-shaped drying tunnel 1, and the two air return openings 1-5 are respectively positioned on two sides of the U-shaped drying tunnel 1 and are both positioned at the lower part of the U-shaped drying tunnel 1.

The compression heat dryer 2 is an oil-free double-screw air compressor, and a compression cavity and the surfaces of a male rotor and a female rotor of the compression heat dryer 2 are respectively provided with a Teflon coating. An exhaust port of the compression heat dryer 2 is connected with an exhaust pipe 2-1, one end of the exhaust pipe 2-1 extends into the heat insulation board 1-1 at the top of the U-shaped drying tunnel 1 and is communicated with the middle part of the hot air pipe 1-2, and is communicated with the inside of the U-shaped drying tunnel 1 through each air outlet 1-21 on the hot air pipe 1-2. The exhaust port is also provided with a stop valve 2-2, and the stop valve 2-2 is used for controlling the exhaust port to communicate or block the exhaust pipe 2-1; a silencer 2-3 is also arranged on the exhaust pipe 2-1. The air inlet of the compression heat dryer 2 is connected with two air inlet pipes 2-4, and the two air inlet pipes 2-4 are respectively connected with two air return openings 1-5 in a one-to-one correspondence manner, so that the air inlet is communicated with the inside of the U-shaped drying tunnel 1.

The utility model discloses a U type compression heat drying tunnel when using, turn-off compression heat drying-machine 2's stop valve 2-2 earlier, block compression heat drying-machine 2's gas vent and to blast pipe 2-1 exhaust, after the exhaust temperature of isobaric compression heat drying-machine 2 is stable, open stop valve 2-2 again, make compression heat drying-machine 2's gas vent to blast pipe 2-1 intercommunication and through blast pipe 2-1 leading-in hot-blast to hot-blast tuber pipe 1-2, hot-blast in flowing into U type drying tunnel 1 through each air outlet 1-21 that is located U type hot-blast main 1-2's both sides and middle part, make U type drying tunnel 1's both sides and middle part rapid heating up. The heat insulation boards 1-1 on the inner side wall, the outer side wall and the top of the U-shaped drying tunnel 1, the wind shields 1-31 arranged on the upper portions of the feeding holes 1-3, and the heat insulation door consisting of a plurality of heat insulation curtains 1-41 arranged on the discharging holes 1-4 can stabilize the temperature in the U-shaped drying tunnel 1 and reduce heat loss.

The workpiece is automatically conveyed from a feed port 1-3 into a U-shaped drying tunnel 1 by a roller conveyor line 1-6, hot air provided by a compression heat dryer 2 is blown into the U-shaped drying tunnel 1 from top to bottom through air outlets 1-21 and can be fully diffused at the top in the U-shaped drying tunnel 1, so that the temperature in the U-shaped drying tunnel is rapidly increased, and a coating on the surface of the workpiece can be rapidly dried and solidified to form a film; meanwhile, heat is transversely sucked into the air return openings 1-5 from the lower part of the U-shaped drying channel to the inner side wall of the U-shaped drying channel and enters the compression heat dryer 2 for cyclic utilization, and the heat utilization rate is high; the air outlets 1-21 are not directly opposite to the air return inlets 1-5, so that direct connection of air supply and air return is avoided.

In this embodiment, a temperature controller 5 may be further disposed on the outer side wall of the U-shaped drying tunnel 1, a temperature sensor 4 is disposed above each of the two air return openings 1-5 in the U-shaped drying tunnel 1, the two temperature sensors 4 are both in signal connection with the temperature controller 5, and the temperature sensor 4 is used for detecting the drying temperature in the U-shaped drying tunnel 1. The compression heat dryer 2 is driven by a variable frequency motor, and the variable frequency motor is also in signal connection with a temperature controller. The temperature controller 5 obtains the accurate temperature in the U-shaped drying tunnel 1 through the temperature sensor 4, and once the temperature in the U-shaped drying tunnel 1 is too high, the temperature controller 5 controls the automatic frequency conversion of the compression heat dryer 2, reduces the working frequency of the compression heat dryer to reduce the displacement of the compression heat dryer, and further reduces the heat provided by the compression heat dryer.

Example 2:

as shown in fig. 4, the U-shaped compression heat drying tunnel of the present embodiment is different from embodiment 1 in that an equipment platform 6 is disposed above the U-shaped drying tunnel 1, a compression heat dryer 2 is disposed on the equipment platform 6, and an access ladder 3 capable of moving the equipment platform 6 up and down is disposed on the equipment platform 6; two air return openings 1-5 of the U-shaped drying tunnel 1 are arranged on the inner side wall of the U-shaped drying tunnel 1 and are respectively positioned at two sides of the U-shaped drying tunnel 1, and two air inlet pipes 2-4 of the compression heat drying machine 2 are respectively connected with the two air return openings 1-5 in a one-to-one correspondence mode.

The above are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention; modifications and equivalents of the present invention may be made without departing from the spirit and scope of the invention, which should be construed as broadly as the appended claims.

Claims

1. A U-shaped compression heat drying tunnel is characterized by comprising a U-shaped drying tunnel (1) and a compression heat dryer (2); a U-shaped roller way conveying line (1-6) is arranged at the bottom of the U-shaped drying tunnel (1), heat insulation plates (1-1) are arranged on the inner side wall, the outer side wall and the top of the U-shaped drying tunnel (1), a feeding port (1-3) and a discharging port (1-4) are respectively arranged at two ends of the U-shaped drying tunnel (1), a hot air pipe (1-2) is arranged in the U-shaped drying tunnel (1), a plurality of air outlets (1-21) are arranged on the hot air pipe (1-2), and at least one air return port (1-5) communicated with the inside of the U-shaped drying tunnel (1) is arranged on the U-shaped drying tunnel (1); the air inlet of the compression heat dryer (2) is communicated with the air return inlet (1-5), and the air outlet of the compression heat dryer (2) is communicated with the hot air pipe (1-2).

2. The U-shaped compression heating drying tunnel according to claim 1, characterized in that the hot air pipes (1-2) are arranged at the top of the U-shaped drying tunnel (1), and the air outlets (1-21) are opposite to the bottom of the U-shaped drying tunnel (1) in a spaced manner; the air return opening (1-5) is positioned at the lower part of the U-shaped drying tunnel (1), and the air return opening (1-5) is positioned on the inner side wall or the outer side wall of the U-shaped drying tunnel (1).

3. The U-shaped compression heating drying tunnel according to claim 2, wherein the hot air pipes (1-2) are arranged in the U-shaped drying tunnel (1) in a U shape, and two sides of the hot air pipes (1-2) are respectively arranged at two sides inside the U-shaped drying tunnel (1); air outlets (1-21) are arranged at both sides and the middle part of the U-shaped hot air pipe (1-2); two air return openings (1-5) are respectively arranged at two sides of the U-shaped drying tunnel (1), two air inlet pipes (2-4) are arranged at the air inlet of the compression heat dryer (2), and the two air inlet pipes (2-4) are communicated with the two air return openings (1-5) in a one-to-one correspondence manner.

4. A U-shaped compression-heating drying tunnel according to claim 1, characterised in that the compression-heating dryer (2) is arranged in a concave position of the U-shaped drying tunnel (1).

5. A U-shaped compression-heating drying tunnel according to claim 1, characterised in that an equipment table (6) is arranged above the U-shaped drying tunnel (1), and the compression-heating dryer (2) is arranged on the equipment table (6).

6. A U-shaped compression heat drying tunnel according to claim 1, wherein the exhaust port 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 communication or blocking of the exhaust port to the hot blast pipe (1-2).

7. A U-shaped compression-heating drying tunnel according to claim 1, wherein the exhaust port of the compression-heating dryer (2) is provided with an exhaust duct (2-1), the exhaust duct (2-1) is communicated with the hot-air duct (1-2), and the exhaust duct (2-1) is provided with a muffler (2-3).

8. The U-shaped compression heating drying tunnel according to claim 1, characterized in that a temperature controller (5) is arranged on the outer side wall of the U-shaped drying tunnel (1), at least one temperature sensor (4) in signal connection with the temperature controller (5) is arranged in the U-shaped drying tunnel (1), and the temperature sensor (4) is positioned below the air return opening (1-5); the compression heat dryer (2) is driven by a variable frequency motor, and the temperature controller (5) is in signal connection with the variable frequency motor.

9. A U-shaped compression heating drying tunnel according to claim 1, characterized in that the upper part of the feeding opening (1-3) is provided with wind deflectors (1-31).

10. A U-shaped compression heating drying tunnel according to claim 1, characterised in that the outfeed (1-4) is provided with an insulated door consisting of several insulated curtains (1-41).