KR20090117278A - The microwave screw dryer with heating system - Google Patents

Abstract

PURPOSE: A microwave and a continuous screw dryer are provided to generate the heat to sludge with the microwave irradiated from a magnetron, and to dehydrate the sludge with a cooling fin. CONSTITUTION: A microwave dryer includes a casing(10), a screw(20), a magnetron(30), a shield(40), an outlet(60), an input molder(70), and a glass window(80). The casing includes a sludge input(1) and an outlet(2). The screw moves the sludge in the casing. The magnetron is arranged to a zigzag shape on the top of the casing. The shield is formed between a waveguide(31) and the casing. The cooling fin is equipped on the bottom of the casing.

Description

Continuous microwave dryer using microwave and heat sink {The microwave screw dryer with heating system}

The present invention relates to a technical field for the field of drying sludge generated from water and sewage treatment plants, various wastewater treatment plants, livestock wastewater treatment plants, manure treatment plants, paper mills, etc., which significantly reduces the water content by drying the concentrated sludge. It is possible to control the throughput by controlling the dryer screw RPM, the number of magnetron drives and the temperature of the heat sink, and it is possible to move and install the sludge dryer and to control the drying rate of the sludge according to the characteristics of the sludge generated. Invention.

In addition, the present invention can not only be used only for the sludge drying generated above, but also can be effectively used for drying the sludge-like material or the slurry-like material. In particular, the present invention can be used in a variety of baking, confectionery, starch, gluten polysaccharide drying field, food waste drying field because it is easy to manufacture small, portable and easy to install.

The method of drying the sludge is a conventional method of spreading the sludge on the bottom to dry the sludge using solar heat. However, there are environmental problems such as rain or snow, the effects of the weather and the occurrence of odors, as well as environmental problems that the sludge is completely dried sludge scattered

Accordingly, various methods of drying the sludge have been proposed.In general, the industrial drying device is a simple heating drying method, hot air drying method, power drying, kiln drying, refrigerant compression drying, etc. Various methods are used to dry according to the equivalence and purpose of use.

Among these drying methods, the most commonly used method in the industry is a conventional drying method that dries sludge generated in a water purification plant or sewage treatment plant by a dehydration device, and a drying method that simply heats and dry by spraying hot gas. Hot air drying and kiln drying methods are known.

However, the drying method and the kiln drying method by simple heating take a lot of drying time, not only the drying efficiency is significantly reduced, but also a lot of fuel is consumed by the drying and there is a problem that the treatment cost increases.

In addition, there is a problem that the hot air drying device to dry by spraying hot gas has a problem of polluting the air as the sludge particles are scattered by the strong injection pressure of the gas is discharged to the outside, to prevent the cyclone and dust collector to be installed separately There was a problem.

In addition, hot air drying and kiln drying cause moisture to evaporate from the skin of the dried product because the properties of the hot air are different from each other when the hot air is supplied to the dried product. Due to this, a uniform dry matter could not be obtained and there was a problem in which the dry matter was scattered.

The above heating method always heats the surface of the material, which requires a lot of cost and time, and many engineers, such as microwave, wave oven, Heating technology using electromagnetic resonance and magnetic resonance have been steadily developed.

Among them, a method of drying a dry matter using microwaves has been commercialized a lot, and the microwave is called a high frequency (industrial frequency) RPM (generally using 2,450 Mhz), prior patents 10-567794 (hereinafter, referred to as prior art). ) Discloses a technique for drying a dry matter using microwaves.

The prior art of the prior art using a microwave, that is, compared to the patent application No. 2000-0001881 (hereinafter referred to as the prior art), the object to be dried as it is simply transferred to the state placed on the upper surface of the conveying means, such as a conveyor belt The voids are so narrow that the microwaves are not uniformly irradiated deeply inside the building to reduce the drying capacity and that the inside and outside are not evenly dried to obtain high quality dry products. As a result of the phenomenon that the dry matter is fixed to the surface of the conveying means, the inconvenience of the worker having to detach it is aggravated, and as a result, the shape of the dry matter is impaired and the quality is deteriorated. Magnetron to irradiate the body itself by high temperature heat Its life is reduced by overheating, but by providing a separate cooling means to cool it, the durability of the product is shortened and the problem of shortening of the durability of the product is improved. In the case of the humid air is a state containing fine dust, impurities, odors, etc. There was a point to pollute the air, but there is a function that effectively prevents it must be an invention more effective than the prior art.

However, the prior art has a number of other problems despite the many advantages,

First, many magnetrons, transformers, and capacitors are installed together, so that each magnetron, transformer, and capacitors interfere with each other, causing overheating and causing many problems. Especially, magnetrons, transformers, and capacitors Since it is attached to the lower part, there is a disadvantage that it is difficult to replace and repair in case of failure.

Second, when using microwave conveyor belt to irradiate the microwaves by magnetron, the high temperature, local overheating of about 250 ° C easily damaged the properties of the dry matters and the dry matters scattered. However, even if the belt is used as a good material, there is a disadvantage that the material is easily damaged due to the high temperature applied to the belt itself. In addition, it is inevitable that more local overheating occurs by directly irradiating microwaves, and there is a problem that such local overheating is inevitably increased because stirring of the dry matter is impossible.

Third, the conveyor belt was vibrated using a super-electromagnetic vibrator to prevent the object from sticking to the conveyor belt, while having the problem of being discharged with the dehydrated steam when it was dried. Of course, the diaphragm for vibrating the conveyor belt by the superelectromagnetic oscillator, the cushioning material to maintain a constant elasticity and absorb the shock to the diaphragm, the support plate is necessary, the superelectromagnetic vibrator so that the vibrator does not interfere with the magnetic force There are disadvantages in terms of complexity and operational difficulties, such as the formation of a hole in the upper part of the oscillator.

Fourth, in order to obtain a good drying efficiency, the dry matter should be spread widely on the conveyor belt to increase the surface area, while the throughput is so small that the dry production efficiency is not effective. The drying efficiency is higher than the power supply ratio. There was also a drawback to the overall energy inefficiency.

Fifth, the magnetrons are arranged in a line, causing interference with each other, resulting in failure and overheating of the magnetrons, which causes frequent problems with the magnetrons.The method of cooling the magnetrons also cools the magnetrons by introducing dry air. As the exhaust air is introduced into the sludge drier and used again, a problem arises that the structure is complicated and it is not easy to operate.

Therefore, the present invention provides a more efficient and mobile sludge dryer while maintaining the advantages of the prior art, generating heat to the sludge using a microwave irradiated from the magnetron and dewatering the desired sludge using a heat sink The object is to provide a compact removable sludge dryer that is available.

First, in order to solve the problems of the prior art, the present invention separates the magnetron 30 and the transformer 140 and attaches the magnetron to the upper part of the sludge dryer. In order to eliminate the interference between the magnetron and the transformer, the failure rate is significantly reduced.

In addition, while the prior art takes the configuration to cool the magnetron and the transformer by introducing cold air, the present invention uses the magnetron as an air-cooled magnetron (30 ') equipped with an air cooling fan, the efficiency is much higher and there is little trouble Was taken.

And it is also possible to directly irradiate the microwave, but preferably irradiate the microwave first to the waveguide (31) to adopt an indirect irradiation method in which the microwave is dispersed to prevent local heating phenomenon and to the entire sludge The microwave was irradiated to uniformly heat the entire sludge, thereby rapidly increasing the sludge drying efficiency.

As a means of conveying the sludge, the screw 20 is used instead of the conveyor belt to greatly compensate for the disadvantages of the conveyor belt being damaged and failing to operate, and the sludge is automatically agitated by the screw. It also prevented the sludge from drying out and solved the disadvantage of sludge scattering.

In addition, the sludge inlet 1 is provided with an input molding machine 70 to inject the sludge into the noodle type, and the sludge injected into the noodle type is agitated again by the skew to allow the microwave to be evenly irradiated to the sludge. As the sludge surface area was enlarged as a whole, the efficiency of microwave irradiation on the sludge was increased to obtain a uniform, stable and effective drying rate of the sludge.

In addition, when using the input molding machine, not only natural flow type but also air compressor, pump compressor, screw compressor, etc. are adopted to be used in various ways so that they can cope with the amount and property of sludge fluidly.

The lower part of the casing was configured to install a heat sink 60 having a temperature control function so that even when the amount of sludge is large, it is possible to cope very effectively so that a drying rate of the expected value can be obtained.

In addition, in order to prevent the sludge drying efficiency from dropping when saturated steam pressure is generated inside the casing due to a large amount of water vapor discharged from the sludge, a ventilation fan 110 connected to the steam outlet 50 is installed, and inside or outside the casing. The condenser 90, 91 was installed to condense the water vapor so as to quickly remove the water vapor.

Even when the casing 10 is installed, the casing is inclined upwardly from the sludge inlet to the outlet using the casing support 130 so that the dried steam from the sludge can be discharged very easily, thereby increasing the drying efficiency. To maintain.

In addition, another feature of the present invention is a compact and integrated mobile sludge dryer equipped with a sludge dryer and a controller 120 to facilitate movement of the sludge dryer, and a means for moving to the mounting plate 131 and a means for fixing the sludge dryer. Due to this feature, it is a sludge dryer that can be applied very fluidly to sludge generating workplaces that are discharged in small quantities intermittently.

Finally, the use of the screw mentioned above, the choice of magnetron irradiation method, the injection molding machine, the use of the condenser, etc. have the effect of blocking the external emission of the microwave in two or three times. To achieve.

The present invention improves the sludge drying efficiency, improves the dry sludge production rate, blocks electromagnetic leakage in multiple times, and inclines the casing to easily discharge water vapor, thereby improving thermal efficiency and thermal conductivity.

In addition, the sludge is injected into the casing inlet as a noodle type, which maximizes the surface area of the sludge and significantly improves the drying efficiency. The transformer and the magnetron are separately installed to prevent breakdown of the transformer and the magnetron. In addition, the magnetron is attached to the upper part of the casing outside, so that the sludge dryer can be used continuously even when a part of the magnetron breaks down, and it is very effective for the user to easily replace the broken magnetron.

In addition, the magnetron is attached to the upper portion of the casing preferably cross-crossing, which is very useful to prevent the magnetron from interfering with each other, and the magnetron is separated from the transformer and is effective in preventing overheating.

In addition, in the case of the conventional sludge dryer using a magnetron, the configuration is very complicated, but the present invention has the advantage that it is very easy to manufacture the sludge dryer by eliminating the complexity of this structure, it is efficient when moving the sludge to the outlet using a screw There is an effect of the sludge mixing and accordingly it is very effective to solve the disadvantage of the dust generated by the local overheating of the sludge.

In addition, the lower part of the casing is provided with a heat-adjustable heat regulation plate, so if only the microwave alone does not achieve the desired sludge drying efficiency, the heat sink was operated to obtain the desired sludge drying rate. This makes it possible to cope with various sludge properties and quantities very effectively.

In addition, the present invention is a compact one-piece portable sludge dryer equipped with a mobile device is very easy to transport it can be effectively used in response to various types of sludge properties or emissions generated in various types of workplaces.

In addition, by installing a see-through window on the upper part of the casing to be able to visually identify whether the sludge can be dried effectively, the configuration was made to facilitate the operation to meet the sludge drying rate required when operating the sludge dryer. On the other hand, when the cooling device is installed inside the casing, if the see-through function due to the cooling device is lost, it is also possible to install a see-through window on the side of the casing to effectively control the sludge drying rate.

In addition, the microwave outflow to the outside during the driving of the present invention in two or three times to prevent harm to the human body, and the steam generated by drying in the sludge, that is, the steam containing various volatile substances discharged by cooling with a condenser By doing so, there are also eco-friendly effects such as odor prevention and air pollution prevention.

Finally, the present invention is not limited to being used only for sludge drying of water purification sewage treatment plants, but can also be effectively used for dry matter in various slurry forms.

The specific configuration of the present invention is as follows.

A casing 10 having a sludge inlet 1 and an outlet 2, a screw 20 for forwarding the sludge forward in the casing, and a magnetron 30 which is arranged in a zigzag shape on the upper part of the casing and is detachable. Between the magnetron waveguide 31 and the casing 10 is provided with a blocking film 40 through which microwave passes and water vapor cannot pass through, and an outlet 50 for discharging steam generated by drying in the sludge on the upper part of the casing. And the lower part of the casing is provided with a heat sink 60 having a temperature control heating capability in some cases, the sight glass 80 is installed on the upper side or the side of the casing and the injection molding machine 70 is provided between the sludge inlet and the sludge inlet pipe. It is a basic feature, and in some cases, the ventilation fan 110 and the external condensing device 90, the external condensation device 91 is installed inside the casing to effectively vapor It removes the group and takes the structure which raises a drying rate.

Hereinafter, the configuration according to the present invention in detail.

When the sludge is introduced from the sludge inlet 1 and the screw 20 is driven by a driving means such as a motor 21, the sludge is advanced toward the outlet of the casing along the screw 20.

When the sludge inside the casing is advanced toward the outlet by the screw, the microwave is irradiated to the sludge by a plurality of magnetrons 30 attached to the outside of the casing.

At this time, the sludge irradiated to the microwave is heated and dried while advancing toward the outlet by the screw 20, and dried sludge in a desired state is produced.

Therefore, the sludge dryer using the microwave of the present invention has the following special features in its configuration.

When the sludge is introduced into the sludge dryer, it may be added as it is, but in order to increase the surface area of the microwave irradiated to the sludge, an insert molding machine (plate with multiple holes) 70 into which the sludge may be introduced into the noodle type is provided. The sludge inlet 1 and the portion (1 ') connected to the sludge inlet is to be installed. Therefore, as the sludge flows into the casing as a noodle type, the surface area of the sludge increases, and as a result, the surface area at which microwave is irradiated to the sludge increases, resulting in a significant increase in drying efficiency. In addition, the microwave irradiated by the magnetron is blocked by a triple triple, significantly reducing the risk of electromagnetic leakage.

Such an injection molding machine 70 may be provided in various forms according to the properties of the sludge. Preferably, it is preferable to use various types of holes in the plate so that the sludge is introduced into the noodle type.

In addition, as a material of the input molding machine 70, plastic, iron, synthetic new materials, etc. may be used, which may be variously adopted depending on the water content and properties of the raw sludge before injection. Preferably, it is preferable to use stainless steel which is free from corrosion in acid, basicity, water and the like.

When the sludge is introduced into the casing like the noodle rhythm through the feed molding machine, it is necessary to use a means for applying pressure to the raw sludge. This is because, in general, a constant force must be applied while the sludge passes through the feed molding machine according to the water content of the raw sludge. The means for applying pressure 100 is determined according to the properties and throughput of the sludge, and generally may be employed in various ways such as pneumatic, pump, screw, and the like. Sludge crimping means shown in the drawing (11) of the present invention is a sludge injection press consisting of a hopper 101, a sludge injection screw 102, a sludge injection motor 103, an embodiment of the sludge compression means and in the present invention It is not limited to the sludge crimping means.

The sludge, which has been noodle-shaped through the feed molding machine 70, is advanced to the outlet by a screw, and when the magnetron 30 for irradiating microwaves to the noodle-type sludge is attached to the casing, the sludge is attached to the outer surface of the casing. This easy installation has a feature that can be easily replaced when the magnetron breaks down.

In addition, the magnetron 30 is a plurality of magnetron is used is attached to the outer surface of the casing. It is preferably attached to the top of the casing, and even more preferably is arranged to be opposed to each other on the surface of the casing relative to the cross section of the casing. Therefore, the microwave is irradiated from both sides to the sludge advancing by the screw 20 to dry the sludge very effectively.

In addition, the magnetron is preferably arranged in an intersecting manner, that is, zigzag. The reason is to avoid the magnetrons arranged in the casing to interfere with each other to reduce the efficiency of each other's magnetrons, and also to significantly lower the risk of failure by the magnetrons interacting.

Another feature of the present invention is that the microwave generated from the magnetron 30 adopts a method of direct irradiation as well as an indirect irradiation. In the drying of a dried object using a conventional magnetron, a direct irradiation method is employed. Therefore, in the conventional direct irradiation method, the local overheating of the dry object occurs severely and the scattering of the excessively dried object occurs, which makes it difficult to uniformly dry the dry object and also has environmental problems.

However, the present invention employs an indirect irradiation method in which microwaves are first reflected on the walls of the waveguide 31 to which microwaves are irradiated without directly irradiating microwaves to the sludge so that the microwaves are reflected on the walls of the waveguide 31 several times. Because of this, there is an action effect that the microwave is dispersed into several rhythms to prevent local overheating of the sludge as well as to irradiate the sludge evenly and effectively. As a result, the sludge has an effect of evenly mixed by the screw 20, and the microwave is indirectly distributed irradiation to evenly irradiate more surface area of the sludge to increase the drying efficiency.

When the magnetron 30 is operated, the magnetron may be operated entirely, but the magnetron may be selectively operated. This selective operation can be adopted in various ways depending on the nature of the sludge, the type of drying desired, and in some cases, only one row of magnetrons can be used.

In addition, the selective operation is to operate across the magnetron 30 is arranged on each side and the magnetron on the opposite side is preferably to operate the magnetron far away from each other and avoid mutual interference with the magnetron on one side. Ultimately, the selective operation can be determined according to the amount and property of the sludge, the requirements of the dry sludge required, it is highly desirable to operate in a zigzag form. This operation allows continuous use of the dryer while replacing the failed magnetron 30 even when the magnetron breaks down.

The magnetron 30 is separated from the transformer 140 of the controller 120 to be described later, thereby providing a stable power supply. The magnetron 30 is prevented from overheating and microwave interference by preventing the interference of the microwave and the interaction between the magnetron and the transformer than the case in which the transformer 140 and the magnetron 30 are closely installed or mounted together. In addition, failure of the transformer 140 can be prevented.

In addition, a magnetron can be employ | adopted by air cooling. Air-cooled magnetron (30 ') is to prevent the overheating and failure of the magnetron by the air cooling fan very effectively to increase the durability of the magnetron to provide a continuous and stable supply of microwaves.

And the sludge introduced into the sludge inlet through the input molding machine 70 is mixed and stirred in the rotational movement of the screw 20 while the surface area of the sludge is further increased to provide a wider surface area for microwave irradiation, This further increases the sludge drying efficiency.

When attaching the magnetron 30 to the casing 10, the microwave waveguide 31 is attached to the casing 10, the magnet microwave can pass through the attachment portion, the water vapor can not pass, and the heat resistance is strong As the blocking film 40, an acryl plate, asbestos, teflon, or the like is used as the blocking film 40. Preferably the use of environmentally friendly, waterproof and heat resistant Teflon is suitable.

In addition, the casing 10 may be adopted as the casing 11 that the upper portion of the casing is in the form of a rhombus of the upper and lower light.

In this case, in the case where the magnetron 30 is attached to the casing 11 of the lozenge shape, the portion to which the waveguide 31 of the magnetron is attached is a lozenge inclined shape in the shape of a lozenge of upper and lower light on the upper part of the casing, and the waveguide 31 is attached. Attach the magnetron 30 is installed. Due to the upper lozenge-shaped casing (11), the water vapor dehydrated from the sludge rises to be efficiently collected in the lozenge space of the casing to discharge the collected water vapor very effectively to increase the dewatering efficiency. It also provides a very useful shape for installing an internal condenser 91 for condensing water vapor to be described below, and enables an effective application.

In order to prevent generation of saturated steam due to excessive dehydration effect in the steam outlet 50 provided in the upper portion of the casing 10, it is also possible to install the ventilation fan 110 to discharge the steam more quickly. . Due to the installation of the ventilation fan 110, the water vapor is quickly discharged to solve the saturation state of the water vapor, thereby increasing the drying efficiency. Ventilation fan 110 means a device having a means for discharging water vapor may be of any form or type depending on the amount of water vapor and the discharge rate. Preferably it is very useful to be able to adjust the blowing speed.

The external condenser 90 is additionally mounted to the ventilation fan 110 or is not connected to the ventilation fan, and only the external condenser 90 may be connected to the steam outlet 50. Due to the external condenser 90, the water vapor is rapidly cooled and condensed and discharged to the external condensate water outlet 95, thereby effectively reducing the saturated water vapor pressure and increasing the drying efficiency of the sludge to the maximum. The external condensation device 90 may use any kind of refrigerant, and preferably uses environmentally friendly HFCs. 9 shows an example of an external condensing device and shows that the external condensing device 90 is operated by the external condensing compressor 151. However, this is only one example of an external condensation device, and any other suitable means of external condensation is acceptable.

In addition, it is also possible to install the internal condensation device 91 inside the casing to increase the condensation effect in another breakthrough manner. In this case, condensed water vapor is collected and installed in the lower condenser 91 in the concave (91) -shaped panel 92 to be discharged to the lower portion of the casing 11 in a natural flow. Of course, this panel 92 is installed so as to form a space between the inside of the upper casing and the panel so that the water vapor can be very well in contact with the internal condensation device 91 and also to prevent the microwaves from being irradiated. The panel is also firmly installed by one or several panel supports 96 or one or several panel hangers 93 which hang the panels.

The internal condenser 91 is installed inside the casing, so that supersaturated water vapor is condensed inside the casing, and then directly and quickly through the hole 94 'connected to the condensate outlet formed in the condensation panel 92 to the condensate outlet 94. Not only can the sludge drying efficiency be drastically increased, but it is also possible to cope very actively even when the amount of vapor evaporation is excessive. Of course, the internal condensation unit 91 may also use any kind of refrigerant, and it is preferable to use environmentally friendly HFCs. 10 shows an example of the internal condensation apparatus 91, and the internal condensation apparatus 91 is operated by the internal condensation compressor 150. As shown in FIG. However, this is only one example of an internal condensation device, and any other suitable means of internal condensation is allowed.

Therefore, the use of the internal or external condenser can be selectively adapted to the required drying rate of the sludge, and the operating state can be adjusted according to the appropriate condensation rate so that it can be operated according to the sludge of various quantities and properties. have.

In addition, one or several viewing windows 80 are installed on the upper or side surfaces of the casing 10. This viewing window allows the user to check the working status with his own eyes and to effectively control the sludge inflow rate, screw rotation speed and microwave irradiation dose to have an appropriate drying rate. As seen above, when the internal condensation device 91 is installed inside the casing, a viewing window may be installed on the side of the casing to check the working state.

The present invention installs a plurality of temperature control heat sink 60 in the lower portion of the casing 20 to increase the sludge drying efficiency. In this way, a plurality of heat sinks 60 are installed in the lower part of the casing to heat the sludge, which is more effective in the sludge drying effect by the microwave. The use of the heat sink 60 is supplemented with a portion that does not dry sufficiently with a microwave has the effect that the user can arbitrarily control the desired sludge dry state.

In addition, the present invention is characterized in that the casing 10 is installed so as to have a sludge outlet direction upward with respect to the horizontal plane. The casing 10 may be horizontal to the plane but preferably maintains upwards at a constant angle with respect to the horizontal plane. The reason is that the steam dehydrated from the sludge has an effect of collecting the lower portion of the casing 10, that is, the sludge discharge port 2, so that steam can be effectively discharged to increase the dewatering efficiency. And when the internal condenser 91 is installed inside the casing, when water vapor is discharged from the sludge inlet (1) to the sludge outlet (2), the condensation rate is brought into full contact with the internal condenser (91) while upwardly upwards from the bottom. It can also increase. The device for maintaining the upward direction may be any means for adjusting the upward angle, and preferably, it is possible to stably support the sludge dryer during operation. In Figure 12, as one embodiment of the casing body support 130 is configured, but this is not a means limited to the present invention can be adopted in various ways.

The sludge dryer of the present invention is installed in a compact mobile device together with the controller 120, so that the sludge dryer is movable and thus can be efficiently used for various scales of business. It also has the advantage of being able to proactively cope with sludge production by controlling the number of sludge dryers, and it also provides the promptness to relocate to another plant.

The movable means may be any means capable of moving under the mounting plate 131 on which the controller 120 and the sludge dryer are mainly mounted. Preferably, the means for mounting the wheel 132 and fixing the wheel is used. 133 is effective. In this way, the moved sludge dryer is fixed to the floor during operation to enable stable operation.

In addition, the controller 120 for operating the sludge dryer is compactly arranged and fixed at a certain distance from the sludge dryer, thereby eliminating the trouble of moving the controller 120 separately, and the transport and movement of the sludge dryer is quick. The advantage is that it can be effectively used in small businesses.

And the sludge dryer controller 120 of the present invention is mounted with a sludge dryer at a certain distance as already mentioned, preferably the controller 120 and the sludge dryer to maintain about 30-200 cm effective. As the controller 120 is disposed and fixed at a predetermined distance from the sludge dryer, the transformer 140 for supplying power to the magnetron 30 is capable of supplying stable power to the magnetron 30, and the magnetron 30 and the transformer. The mutual interference of 140 is avoided and the failure rate is significantly lowered. Due to this function it is possible to increase the durability of the sludge dryer and to prevent frequent failure of the transformer 140 to make a continuous and stable sludge dry material.

In addition, the transformer 140 employs a lottery transformer (leakage transformer) to effectively prepare for failure due to overheating of the transformer.

Through the above-mentioned process, the water content of the raw sludge is drastically reduced and dried, and the sludge discharged sludge is discharged to the sludge discharge port 2, and when the sludge is mainly organic sludge, it is formed into a hodotan (hodo-shaped type). Organic fuel), which can be used as an energy source.

As a result of drying the sludge through the present invention, 30 kg / hr of sludge could be treated using energy of 30 kwh per unit, and the sludge gun compared to the unit energy consumption by dropping 80% of the water content to 20% of the maximum water content. The tuning was noticeably high.

By describing the present invention in detail, it can be seen that the present invention is very effectively used as a sludge dryer.

In addition, the present invention is not limited to simply used for drying the sludge from the purified water or wastewater treatment plant, but the drying field of various slurry forms, drying and recycling of food waste, starch, gluten polysaccharides, etc. It is effective for the treatment of sludge contained.

The present invention is mainly used for the drying of sludge which is classified as industrial waste. Industrial sludge means organic inorganic sludge from water purification sewage and organic inorganic sludge from industrial wastewater. Therefore, the present invention is used for drying various kinds of waste sludge, and is very effective for drying organic sludge mainly for domestic wastewater, and the size and number of sludge dryers determined by the amount and properties of sludge from the industry are determined. In addition, even with the use of a single sludge dryer, the magnetron microwave control, heat sink control, screw rotation speed, and feed molding machine can be customized to suit various types of sludge.

In particular, the present invention is very useful when drying the organic sludge of the domestic wastewater generated in a small amount, and also has the advantage of mobility is very efficient in the workplace where sludge occurs intermittently.

In addition, the present invention is not limited to simply used for drying the sludge from the purified water wastewater treatment plant, dry matters in the form of various slurries, drying and recycling of food waste, the field of drying, such as starch, gluten polysaccharides, and various harmful substances It is effective for the treatment of sludge.

1 is a front sectional view of a sludge dryer according to the present invention

2 is a plan view of the sludge dryer according to the present invention

3 is a partial cross-sectional view of the magnetron and the internal condensation device of the present invention;

4 is an example of the internal condensing device, panel and panel hanger in A-A cross section with one side of the magnetron detached.

5 is an example of the internal condensing device and the panel and panel support in A-A cross-sectional view of both sides of the magnetron is detached

6 is an air-cooled magnetron and a blocking film

7 is an example of an input molding machine

8 is an example of a steam ventilation fan

9 is an example of an external condensing device.

10 is an example of an internal condensation device

11 is an example of a sludge injection press

12 is a front view of a mobile sludge dryer equipped with a controller

13 is a side view of the removable sludge dryer mounted with a controller

Explanation of symbols on the main parts of the drawings

1: sludge inlet 1 ': part connected to the sludge inlet

2: sludge outlet

10: casing 11: casing having an upper lozenge shape

20: screw 21: screw motor

30: magnetron 30 ': air-cooled magnetron

31: waveguide

40: blocking film

50: water vapor outlet

60: heat sink

70: input molding machine

80: viewing window

90: external condenser 91: internal condenser

92: panel 93: panel hanger

95: external condensate outlet 96: panel support

150: internal condensing compressor 151: external condensing compressor

100: sludge presser 102: sludge feed screw

101: sludge feed hopper 103: sludge feed screw motor

120: crawler

130: casing body support 131: mounting plate

132: wheel 133: wheel fixing means

140: Lottery Transformers

Claims (13)

A casing 10 having a sludge inlet 1 and an outlet 2, a plurality of detachable magnetrons 30 having a waveguide 31 attached to the casing to irradiate microwaves into the casing, and microwaves Microwaves can be projected to the waveguide and the casing attachment part, and a blocking film 40 which prevents the inflow of steam, skews 20 mounted inside the casing, and an outlet 50 through which steam vapor is dried on the casing is discharged. It characterized in that it is configured, the microwave dryer for drying the irradiated microwaves by the magnetron to the sludge fed to the sludge inlet (1) of the casing and transported to the sludge outlet (2) by the screw (20). It has a sludge inlet (1) and an outlet (2), and the casing upper part has a casing (11) having a rhombic shape of upper and lower light beams, and a waveguide (31). A plurality of detachable magnetrons 30, a microwave waveguide to the microwave waveguide and the casing attachment portion, and a blocking film 40 to prevent the inflow of steam, and a skew 20 to be mounted inside the casing; The upper portion of the casing is characterized by consisting of the discharge port 50 is discharged steam, the sludge is introduced into the sludge inlet (1) of the casing and the sludge discharged to the sludge outlet (2) by the screw 20 magnetron Microwave dryer for irradiating the microwave by the drying. The microwave dryer according to claim 1 or 2, further comprising a viewing window (80) at the top or side of the casing, and a heat sink (60) capable of temperature control at the bottom of the casing. According to claim 1 or claim 2, wherein the upper or side of the casing window 80, the heat sink 60 is adjustable in the lower casing temperature, the sludge inlet molding machine 70 and the sludge injection presser 100 Microwave dryer According to claim 1 or 2, wherein the upper or side of the casing window 80, the heat sink 60, the temperature control is possible under the casing, the sludge inlet molding machine 70, the sludge injection presser 100 and The microwave dryer includes a ventilation fan 110 connected to an outlet 50 through which the steam vapor is dried, and an external condenser 90 connected to the ventilation fan. The microwave dryer according to claim 1 or 2, further comprising an internal condenser (91) and a condensate panel (92) in the casing. 3. An internal condensation device (91), a condensate panel (92), a sight glass (80) at the top or side of the casing, and a heat sink (60) capable of temperature control at the bottom of the casing. Microwave dryer equipped The heat condenser 60 according to claim 1 or 2, wherein the inner condensing unit 91, the condensate panel 92, the sight window 80 on the upper or side surfaces of the casing, and the heat sink 60 are adjustable in the lower side of the casing. And a microwave dryer equipped with an input molding machine 70 and a sludge injection presser at the sludge inlet. 3. The mounting plate 131 according to claim 1 or 2, further comprising a casing body support 130, a controller 120, and a mounting plate 131 on which the controller and the microwave dryer are mounted. Movable Microwave Dryer Mounted by Means According to claim 1 or 2, wherein the upper or side of the casing window 80, the heat sink 60, the temperature control is possible under the casing, the sludge inlet molding machine 70, the sludge injection presser 100 and The upper part of the casing is provided with a ventilation fan 110 connected to the outlet 50 through which water vapor is dried, an external condenser 90 connected to the ventilation fan, a casing body support 130, a controller 120, And a mounting plate (131) on which the controller and the microwave dryer are mounted, the movable microwave dryer being movable by attaching a moving means to the mounting plate (131). The internal condensing device (91), the condensate panel (92), the casing body support (130), the controller (120), the controller and the microwave dryer. A movable microwave dryer having a mounting plate (131) attached thereto, and movable by attaching a moving means to the mounting plate (131). 3. An internal condensation device (91), a condensate panel (92), a sight glass (80) at the top or side of the casing, and a heat sink (60) capable of temperature control at the bottom of the casing. And a casing body support 130, a controller, and a mounting plate 131 on which the controller and the microwave dryer are mounted, and the movable means 131 is mounted on the mounting plate 131 to be movable. Mobile microwave dryer. 3. An internal condensation device (91), a condensate panel (92), a sight glass (80) on the upper or side surfaces of the casing, and a heat sink (60) that can be temperature-controlled under the casing (3). And a sludge inlet molding machine 70, a sludge injecting presser 100, a casing body support 130, a controller 120, and a mounting plate 131 on which the controller and the microwave dryer are mounted. A movable microwave dryer that is movable by mounting a moving means on the mounting plate 131.

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