CN105276957A - Efficient drying machine - Google Patents

Abstract

The invention discloses an efficient drying machine. The efficient drying machine comprises a drying barrel and a blower. The drying barrel comprises a barrel body of a hollow cylindrical structure, a base arranged at the bottom of the barrel body and a cover body arranged at the top of the barrel body. A plurality of annular baffles inclined downwards are arranged on the inner wall of the barrel body. A stirring device is arranged in an inner cavity of the barrel body. The stirring device comprises a stirring shaft and a plurality of blades extending out in the radial direction of the stirring shaft. The blades are in a flat-panel shape. The front ends of the blades in the rotation direction are lower than the rear ends of the blades in the rotation direction, and the free ends, far away from the stirring shaft, of the blades are inclined downwards. The blades and the annular baffles are arranged at intervals in the vertical direction. The blower is connected with the barrel body through an air supply pipe. An electromagnetic heater is arranged on the air supply pipe. The electromagnetic heater comprises heating coils and honeycomb-shaped heating bodies arranged in the heating coils. An airflow channel is arranged on the heating bodies. The efficient drying machine has the advantages of being high in heating efficiency, low in failure rate and the like.

Description

A high-efficiency dryer

technical field

The present invention relates to a dryer.

Background technique

In the plastic industry, it is very common to use dryers to dry plastic granules. However, due to the low efficiency of the dryers in the prior art, it not only consumes electric energy, but also makes it difficult to evenly dry plastic granules. In addition, the dryers in the prior art mainly use resistance wires for heating, which has low heating efficiency and serious heating lag, making it difficult to precisely control the temperature, and the resistance wires have a short service life and are prone to burn out due to high temperature aging. Breaking, resulting in a large amount of maintenance, brings great inconvenience to production, and affects the improvement of production efficiency.

Contents of the invention

The present invention aims to solve the technical problems mentioned above and provide a high-efficiency dryer with good drying effect, high heating efficiency and low failure rate.

The present invention is achieved through the following technical solutions:

A high-efficiency dryer, including a drying barrel and a fan arranged outside the drying barrel, the fan is connected to the drying barrel through an air supply pipe and a return air pipe, the drying barrel includes a hollow cylindrical structure, and a The base and the cover set on the top of the cylinder; the cover is provided with a feed hopper and a return air outlet passing through the cover, one end of the return air pipe is connected to the return air outlet, and the other end is connected to the suction port of the fan; the cylinder The inner wall of the body is provided with a number of downward-sloping annular baffles, and the inner cavity of the cylinder is provided with a stirring device. The stirring device includes a stirring shaft and a number of paddles extending in the radial direction of the stirring shaft. The stirring shaft is arranged vertically. In the cylinder, the stirring shaft is rotatably fixed on the base and connected to the transmission device arranged outside the base. The paddle is in the shape of a flat plate. The free end away from the stirring shaft is inclined downward; the blades and the annular baffles are vertically spaced apart; the base is provided with a discharge port and an air supply port through the base, and one end of the air supply pipe is connected with the air supply port, and the other One end is connected with the exhaust port of the fan, and an electromagnetic heater is arranged on the air supply pipe. The electromagnetic heater includes a heating coil and a honeycomb heating body arranged in the heating coil, and an air flow channel is arranged on the heating body.

Further, a fresh air pipe and an air filter are arranged on the suction port of the fan, the fresh air pipe connects the air filter with the suction port of the fan, and a solenoid valve is arranged on the fresh air pipe.

Further, the air supply pipe is also provided with a thermometer and a temperature sensing probe.

Further, an observation mirror is arranged on the barrel.

Further, the barrel, cover and base are made of stainless steel.

Further, the air outlet is arranged on the side wall of the base.

Further, the air supply pipe is arranged obliquely downward.

The beneficial effects are: the present invention arranges a stirring device in the drying barrel, so that the materials in the drying barrel are heated evenly, and at the same time, the drying time of the materials is reduced because the paddles arranged on the stirring shaft break up the materials , so as to achieve the purpose of efficient drying. In addition, through the use of electromagnetic heaters, the high-efficiency dryer has high heating efficiency and low failure rate.

Description of drawings

Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail, wherein:

Fig. 1 is a schematic diagram of a high-efficiency dryer of the present invention;

Fig. 2 is a sectional view of the drying barrel in Fig. 1 .

detailed description

The high-efficiency dryer shown in Figure 1 and Figure 2 is mainly used to dry materials such as plastic particles. The high-efficiency dryer includes a drying barrel 1 and a fan 2 arranged outside the drying barrel 1 . The fan 2 is connected with the drying barrel 1 through an air supply pipe 21 and a return air pipe 22 .

The drying barrel 1 includes a hollow cylinder body 11 , a base 12 disposed at the bottom of the cylinder body 11 , and a cover body 13 disposed at the top of the cylinder body 11 . Preferably, the cylinder body 11, the cover body 13 and the base 12 are made of stainless steel.

The cover 13 is provided with a feed hopper 15 and an air return port 131 passing through the cover 13 . One end of the air return pipe 22 is connected to the air return port 131 , and the other end is connected to the suction port 23 of the fan 2 .

The inner wall of the barrel 11 is provided with a number of downward-sloping annular baffles 30 to collect the materials and guide the materials to slide down to the stirring device arranged in the inner cavity of the barrel 11 . Specifically, the annular baffles 30 are fixed on the inner wall of the cylinder 11 and are evenly distributed along the height direction of the cylinder 11 . In order to facilitate the observation of the material in the cylinder 11 , the cylinder 11 is provided with an observation mirror 14 . The cylinder body 11 can also be set as a double-layer heat-insulation structure.

The stirring device is arranged in the inner cavity of the cylinder 11, and is used to break up the materials, so that hot air can enter the gap between the materials, so that the materials can be dried quickly and uniformly. The stirring device includes a stirring shaft 31 and a plurality of paddles 32 extending radially from the stirring shaft 31 . The stirring shaft 31 is vertically arranged in the cylinder body 11 . Specifically, the stirring shaft 31 is arranged on the axis of the barrel 11 . The stirring shaft 31 is rotatably fixed on the base 12 , and the stirring device is connected with the transmission device arranged outside the base 12 . The transmission device mainly provides power for the rotation of the stirring device, and the transmission device mainly includes a driving motor and transmits the power provided by the driving motor to the stirring shaft 31 in the stirring device. The paddle 32 is flat, the front end of the paddle 32 in the direction of rotation is lower than the rear end of the rotation direction of the paddle 32 and the free end of the paddle 32 away from the stirring shaft 31 is inclined downward, so that the material falling on it is beaten. Dispersion, and can prevent the material from gathering in the vicinity of the stirring shaft. The paddles 32 and the annular baffle 30 are vertically spaced apart, so that the material can be broken up many times, so that the drying effect of the drying barrel 1 is better.

The base 12 can be sealed and connected with the cylinder 11 in a detachable manner, or the base 12 and the cylinder 11 can be welded into one body. The base 12 is provided with a discharge port 122 for discharging the dried materials out of the drying barrel 1 and an air supply port 121 penetrating the base 12 . The air outlet 121 is connected to one end of the air duct 21 . The air supply port 121 is preferably disposed on the side wall of the base 12 to prevent materials from falling into the air supply port 121 and blocking the air supply port 121 . Furthermore, the air supply pipe 21 is arranged inclined downwards, which can make the materials bounced into the air supply port 121 fall to the air supply port 121 under the action of its own gravity, so as to prevent the air supply pipe 21 from being blocked. In order to facilitate fixing the base 12 , the base 12 may also be provided with legs 16 for fixing the base 12 , so that the discharge port 122 may be provided at the bottom of the base 12 .

The air supply pipe 21 is used to convey the air supplied by the fan 2 into the drying barrel 1 , for this reason, the two ends of the air supply pipe 21 are respectively connected with the air supply port 121 and the exhaust port of the fan 2 . For sending hot air into the drying barrel 1, an electromagnetic heater 7 is arranged on the air supply pipe 21. The electromagnetic heater 7 includes a heating coil 71 and a honeycomb heating body 72 arranged in the heating coil 71. The honeycomb heating body 72 There is an airflow channel on it. The honeycomb heating body 72 can improve the heat exchange efficiency of the air flowing through its surface, and the air flow channel is used to make the air pass through the electromagnetic heater 7 and heat the air.

In order to improve the drying efficiency of the dryer and recycle the heated air, the high-efficiency dryer is provided with a return air duct 22 , which connects the suction port 23 of the fan 2 with the inner cavity of the cylinder 11 .

In order to prevent the materials in the cylinder body 11 from being sucked into the air return pipe 22, a filter screen is arranged on the air return port 131.

In order to make the drying barrel 1 absorb fresh air as required to adjust the temperature of the drying barrel 1, a fresh air pipe 24 and an air filter 5 are also arranged on the air inlet 23 of the blower fan 2, and the fresh air pipe 24 connects the air filter 5 and the air filter 5. The suction ports 23 are connected, and the fresh air pipe 24 is provided with a solenoid valve 42 .

In order to accurately control the temperature of the hot air in the drying barrel 1 , the air supply pipe 21 is also provided with a thermometer 45 and a temperature sensing probe 44 .

The high-efficiency dryer is equipped with an electric control system, and the operation box 6 of the electric control system can be arranged on the outer wall of the air supply pipe 21, and a heat insulation pad can also be provided as required to prevent the heat on the air supply pipe 21 from being transferred to the operation box 6 Affect the work of the electronic control system. Fan 2, solenoid valve 42, temperature sensing probe 44, electromagnetic heater 7, etc. are all connected with the electric control system, and are controlled by the electric control system.

The hollow arrow in Fig. 2 shows the movement direction of the material in the drying barrel 1. Since a large amount of materials pass through the discharge port 122 and the feed hopper 15, the amount of hot air leaking out of the drying barrel 1 from the discharge port 122 and the feed hopper 15 is very small.

The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall fall within the scope of the technical solution of the present invention.

Claims (7)

1. a high effective drier, it is characterized in that: comprise dry bucket and the blower fan being arranged at dry bucket outside, blower fan is connected with dry bucket with backwind tube by ajutage, and dry bucket comprises cylindrical shell in hollow cylindrical configuration, is arranged at the base of cylinder body bottom and is arranged at the lid at cylindrical shell top; Lid is provided with the return air inlet of feed hopper and through lid, one end of backwind tube is connected with return air inlet, and the other end is connected with the air entry of blower fan; The inwall of cylindrical shell is provided with the ring baffle that some courts have a down dip, the inner chamber of cylindrical shell is provided with agitating device, some blades that agitating device comprises shaft and extends in the radial direction of shaft, shaft is vertically arranged in cylindrical shell, shaft to be rotatably mounted on base and to be connected with the transmission device being arranged on base exterior, blade is tabular, the front end of blade rotation direction lower than the rear end of the rotation direction of blade and blade away from the free end of shaft towards having a down dip; Blade and ring baffle in the vertical direction interval are arranged; Base is provided with discharge gate and the air outlet running through base, one end of ajutage is connected with air outlet, the other end is connected with the exhaust outlet of blower fan, ajutage is provided with electromagnetic heater, electromagnetic heater comprises heater coil and is arranged at the cellular calandria in heater coil, and calandria is provided with gas channel.

2. a kind of high effective drier according to claim 1, it is characterized in that: the air entry of described blower fan also arranges fresh wind tube and air cleaner, air cleaner is connected with the air entry of blower fan by fresh wind tube, and fresh wind tube is provided with magnetic valve.

3. a kind of high effective drier according to claim 1, is characterized in that: described ajutage is also provided with thermometer and temperature sense probe.

4. a kind of high effective drier according to claim 1, is characterized in that: described cylindrical shell is provided with peephole.

5. a kind of high effective drier according to claim 1, is characterized in that: described cylindrical shell, lid and base are made up of stainless steel material.

6. a kind of high effective drier according to claim 1, is characterized in that: described air outlet is arranged on the sidewall of base.

7. a kind of high effective drier according to claim 6, is characterized in that: described ajutage is obliquely installed down.