CN100385180C - Adjustable and guided air supply system for drying room - Google Patents

Abstract

The invention discloses an adjustable and guided air supply system for a hot air drying room. Adjustable deflector tongue plate, there is a deflector curved plate at the corner of the side wall on the top of the drying room, which cooperates with the guide air blower to form a smooth and controllable attached airflow. The beneficial effects of the present invention are: the adjustable deflector tongue plate can adjust the flow velocity, direction and flow rate of the drying air, so as to meet the requirements of the drying process and improve the drying quality; The controllable attached airflow reduces the air supply resistance, improves the air supply flow rate, shortens the drying cycle, and improves the efficiency; the invention can cancel the aluminum air supply ceiling, return air ceiling and several fans used in the conventional drying room. The horizontal partition reduces the height of the drying room and saves initial investment. The invention adopts a high-efficiency and environment-friendly fan to reduce noise pollution, save power consumption, and reduce drying costs.

Description

Adjustable and guided air supply system for drying room

technical field

The invention relates to the field of hot air drying of materials such as wood, food, medicine, agricultural and sideline products, and chemical products, and is suitable for the adjustable and guided air supply system of various hot air drying rooms, drying tunnels and ovens.

Background technique

The drying process is the most energy-intensive but indispensable link in the processing industries of wood, medicine, food, chemical products, agricultural and sideline products, etc. The hot air drying room is an important equipment for drying operations, and the hot air circulation system in the drying room is to improve drying efficiency. The key to building efficiency, saving energy, and ensuring product quality. According to the technical requirements of drying different materials, there must be an air flow in the drying room that can be set as required and whose temperature and humidity can be adjusted to flow on the surface of the material to be dried to achieve the purpose of drying. At present, the air supply system of the drying room is shown in Figure 1. The air flow is powered by the circulating fan 1 and sent to the air supply ceiling 3 on the upper part of the drying room. After being heated by the heater 4, a hot air drying air flow is formed and turned by 90 degrees. After that, it flows downward into the right vertical air channel 6 on the side of the door 5 of the drying room, passes through the gap of the dried material pile 2, flows through the surface of the material, and reaches the left vertical air channel 7 of the material pile, after turning 90 degrees Return to the return air ceiling 8 on the upper part of the drying room to achieve the purpose of drying air circulation. Although this method can achieve the purpose of drying, it has the following defects: 1. The airflow generated by the circulating fan is injected into the air supply ceiling without restriction, and the airflow diffuses rapidly and the streamline is disordered, especially at the air outlet of the air supply ceiling. The air flow is partially blocked, the pressure loss is large, the pressure head of the fan must be increased, resulting in an increase in power consumption, and aluminum transverse partitions are needed between several fans. Due to the needs of installation and maintenance, the ceiling should be able to accommodate people, so the initial investment is large and it takes up a lot of space. 3. The head-on wind speed along the height of the material to be dried cannot be adjusted, resulting in uneven distribution of the vertical head-on wind speed, which makes the material not evenly dried, which not only prolongs the drying cycle, but also has a negative impact on the drying quality and drying cost.

Contents of the invention

The object of the present invention is to overcome the defects existing in the circulating air supply system of various hot air drying and drying rooms, and provide an adjustable and guided air supply system to realize ideal hot air circulation in the drying room.

The technical solution of the present invention is an adjustable and guided air supply system for a hot air drying room, which includes a fan, and is characterized in that a guide air supply device is installed at the air outlet of the fan, and the guide air supply device is provided with a circular variable rectangular shape. The special-shaped and variable-diameter shell is equipped with 1 or 2 adjustable deflector tongues, and there is a deflector curved plate at the corner of the side wall on the top of the drying room, which cooperates with the guide air blower to form a smooth and controllable attachment airflow.

The connecting part of the round-to-rectangular special-shaped variable-diameter housing of the guide air blower and the fan is circular, and the air outlet is rectangular.

The adjustable deflector tongue plate is fixedly connected to the beginning of the shell changing from circular to rectangular, the width of the tongue plate is the same as the width of the air outlet of the shell, the front end of the tongue plate is flush with the air outlet of the shell, and the tongue The front end of the plate is provided with an adjusting screw passing through the tongue plate.

The adjusting screw is fixedly connected to the upper and lower plates of the rectangular air outlet of the casing, and a set of adjusting parts are respectively installed on the upper and lower parts of the tongue plate passing through the adjusting screw.

The beneficial effects of the present invention are: the adjustable diversion tongue plate can be adjusted as required through the adjustment screw and the adjustment member, and the flow velocity, direction and flow rate of the dry air flow can be adjusted and controlled to meet the requirements of the material drying process and improve the drying quality; The curved plate cooperates with the guide air blower to form a smooth and smooth controllable attached airflow, which reduces the air supply resistance and increases the air supply flow rate, thereby shortening the drying cycle and improving the drying efficiency; the air supply used in conventional drying rooms can be canceled by adopting the present invention The suspended ceiling, the return air suspended ceiling and the aluminum transverse partition between several fans reduce the height of the drying room and save the initial investment.

Description of drawings

Fig. 1 is a schematic diagram of the air supply system of a conventional drying room;

Figure 2 is a schematic diagram of a drying room equipped with an adjustable and guided air supply system;

Fig. 3 is the front view of the guide air blower;

Figure 4 is a top view of the guide air blower.

Detailed ways

As shown in Figure 2-Figure 4, a controllable guided air supply system for a hot air drying room, which includes a fan, is characterized in that a guided air blower 10 is placed at the air outlet of the blower fan 1, and the guided air blower 10 There is a round-to-rectangular special-shaped and variable-diameter shell 15, which is equipped with 1 or 2 adjustable guide tongues 14. There is a guide bend 11 at the corner of the side wall on the top of the drying room, which cooperates with the guide air blower 10. Creates a smooth and controlled adherent airflow. The guide air blower is installed at the air outlet of the high-efficiency environmental protection fan, and is connected with the fan casing by bolts. The shell of the guide air blower is a round-to-rectangular special-shaped variable-diameter shell. The connection between it and the fan is circular, and the air outlet is rectangle.

As shown in Figure 3 and Figure 4, the adjustable deflector tongue is fixed at the beginning of the casing changing from circular to rectangular, that is, the fixed root 16 of the deflector tongue, and two pieces are fixed along the direction of the width b of the rectangle (upper and lower ends) or one piece (lower end), as shown in Figure 3-14, the width of the tongue plate is the same as the width of the air outlet of the shell, the front end of the tongue plate is flush with the air outlet of the shell, and the front end of the tongue plate is provided with a through hole The adjusting screw 13 of the tongue plate. Adjusting screw rod 13 is fixedly connected on the upper and lower plates of the rectangular air outlet of housing 15, as shown in Figure 3-13, a group of adjusting parts 12 are respectively housed at the upper and lower parts of the tongue plate passing through the adjusting screw rod. The number of adjusting screws is determined according to the width of the rectangular air outlet. In this embodiment, there are two, and they are installed in a direction parallel to the height h of the rectangular air outlet. In this way, turning the adjusting member can force the front end of the tongue plate to move up and down according to the needs, so as to change the height and jet angle of the air outlet, thereby adjusting and controlling the airflow speed and changing the jet direction of the air outlet. Attached jet.

Figure 2 shows the air circulation system of a hot air drying room equipped with an adjustable and guided air supply system. The fan 1 is powered by a high-efficiency and environmentally friendly fan. According to the requirements of the drying process, the speed and direction are adjusted and rectified through the guided air supply device 10. After that, a smooth sticking flow is formed, and then heated by the heater 4. Under the guidance of the deflector bending plate 11, it smoothly flows into the vertical air duct 6 on the right, and then passes through the gap of the pile of materials 2 to be dried, and flows through the material. The surface, after gathering in the left vertical air channel 7, returns to the air suction port of the fan 1 under the guidance of the guide curved plate 11, so as to organize the circulating dry air flow.

Effect of the present invention is described in further detail in conjunction with trial example:

Taking a wood drying room with a drying volume of ^60M3 as an example, there are three circulating fans with 2.2kW motors, the total power is 6.6kW, and the fans run continuously during the drying operation. If calculated on 26 days per month, the average electricity price is 0.78 yuan/kWh, the monthly electricity fee is 3212 yuan, and the annual electricity consumption is 38544 yuan. After adopting the present invention, as long as three 1.1kW high-efficiency and environment-friendly blowers are used, under the same conditions, the annual electricity consumption is 19,272 yuan for a 60M ³ wood drying room, and the annual electricity cost saving is 19,272 yuan, with economic benefits considerable.

The invention cancels the aluminum transverse partition between the air supply ceiling, the return air ceiling and the ceiling fan, not only reduces the floor height of the drying room by about 50 cm, but also saves the initial investment of nearly ten thousand yuan. The cost of adding three guide air blowers and the front and rear deflectors of the drying room is only about 3,000 yuan. Therefore, for the new drying room, the initial investment is reduced, and the original drying room can be changed quickly. Recovery of investment, so there are great economic benefits. Use high-efficiency and environment-friendly fans to provide power, reduce noise pollution, save power consumption, and reduce drying costs.

Claims (4)

1. An adjustable and guided air supply system of a hot air drying room, which comprises a blower fan, is characterized in that a guide blower is arranged at the air outlet of the blower fan, and the guide blower has a round-to-rectangular special-shaped variable-diameter housing , 1 or 2 adjustable deflector tongues are installed inside, and there is a deflector curved plate at the corner of the side wall on the top of the drying room, which cooperates with the guide air blower to form a smooth and controllable attached airflow. 2. The controllable guided air supply system of the hot air drying room according to claim 1, characterized in that, the joint of the circular-to-rectangular special-shaped and variable-diameter housing of the guided air supply device and the fan is circular , the air outlet is rectangular. 3. The adjustable and guided air supply system of the hot air drying room according to claim 1, characterized in that, the adjustable deflector tongue plate is fixedly connected to the starting point where the shell changes from circular to rectangular, The width of the tongue plate is the same as that of the air outlet of the housing, the front end of the tongue plate is flush with the air outlet of the housing, and the front end of the tongue plate is provided with an adjusting screw passing through the tongue plate. 4. The adjustable and guided air supply system of the hot air drying room according to claim 3, characterized in that, the adjusting screw is fixedly connected to the upper and lower plates of the rectangular air outlet of the casing, and passes through the tongue plate. The upper and lower parts of the adjusting screw are respectively equipped with a set of adjusting parts.

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