KR101071324B1 - Conveyor system for sludge cake transfer be minimised and optimised by air pressure and cohesive agents - Google Patents

Abstract

The present invention collects dehydrated cake or condensate discharged from the dehydrator for lowering the water content of the sludge generated in the sewage treatment plant and the contaminant treatment unit for treating the material containing the foreign matter in a sludge compression storage tank through a transfer line using compressed air. Transfer to the cake storage hopper to be taken out to the outside, precisely weighing the amount that can be transported once to reduce the compressed air to be transported in an optimized state, and spraying organic coagulant to the transfer line to reduce friction The present invention relates to a pneumatic conveyor system for reducing sludge and optimized sludge conveyance that prevents blockage, prevents wear of the conveying line and dismantles the conveying line easily. A certain amount of temporary impurities And a transfer device for discharging the dehydrated cake or impurities intermittently by the incoming compressed air; A metering hopper unit for inputting a predetermined capacity to the transfer unit; A transfer line configured to pipe dewatered cakes or contaminants from the transfer unit to the cake storage hopper; A flocculant injector for injecting an organic coagulant into the inlet of the transfer line to reduce frictional force with the transfer line when the dehydrated cake or contaminant is transferred to the transfer line; A compressed air supply unit for supplying compressed air used in the transfer unit and the metering hopper unit; By controlling the transfer unit, the metering hopper unit and the flocculant injection unit, and the predetermined weight is stored in the transfer unit is configured to control the transfer unit is operated to be transferred to the transfer line.
According to the above-described frictional force reduction and optimized pneumatic conveyor system for transporting sludge according to the present invention, the amount of compressed air is measured and conveyed so that the loss of compressed air is reduced, and the frictional force is reduced by using the appropriate amount and organic coagulant. The distance can be increased, thereby reducing the labor cost for cleaning and the power cost for operating the air compressor, and extending the service life of the system unit.

Description

Conveyor System for Sludge Cake Transfer be Minimised and Optimised by Air Pressure and Cohesive Agents}

The present invention relates to a conveyor system for transporting dehydrated cakes or contaminants, which are environmental wastes, and more specifically, a dehydrator for lowering the water content of sludge generated in a sewage treatment plant, and a dehydration discharged from a contaminant treatment machine for treating a substance containing foreign substances. After collecting a certain amount of cake or condensate in the sludge compression storage tank, transfer it to the cake storage hopper to be taken out through the transfer line by using compressed air, but precisely weighing and optimizing the amount that can be transported once to reduce the compressed air Optimized pneumatic conveyor for sludge transfer and friction reduction, which enables to transport in a stable condition, sprays organic coagulant into the transfer line to reduce friction, prevents clogging, prevents wear of the transfer line and dismantles the transfer line easily. It is about the system.

In general, in the process of wastewater and manure treatment, such as wastewater treatment plants or environmental establishments, a conveyor system using air pressure is widely used to solve unnecessary spaces, places, and other cleanliness problems when installing machines.

The conveyor using the air pressure uses compressed air, and after storing the object to be transported in the sealed container due to the mechanical structure, closes the inlet of the upper storage container and blows the compressed air into the machine instantly. Teeth in the interior

The goods are being transported through the pipeline by air pressure.

This method of transport does not have restrictions on the place and space of the conveyor when installing the machine, and it is free to transfer vertical, horizontal and curved pipes, and causes waste to the odor and surrounding environment by transferring waste through the closed pipeline. Can solve the problem, and also the long distance transport has a very economic advantage.

In the conventional pneumatic and sludge conveying apparatus using the pneumatic pressure is clogged phenomenon during the transfer due to the properties of the viscosity and physical properties inside the conveying pipe and the machine.

That is, the viscous sludge in the conveying material of the pneumatic conveyor, the vinyl component in the contaminants, or the conveying material which is hard to push out of the pneumatic conveyor will remain in the pipe if they are not conveyed within a short time on the pneumatic conveyor and the conveying equipment.

If the compressed air fails to push the conveyed material, the compressed air flows out backward when the inlet valve is opened, and the conveyed water contained in the sealed storage container is popped out as it is. There is a problem that gets dirty inside.

This phenomenon is an electrically automatic operation method. The inlet valve opens and closes automatically when the time comes, and it continuously opens and closes a series of processes that open and close in time regardless of whether or not the conveyed material in the machine and the pipe is transported. In the process of operation.

Therefore, the above-mentioned prior art can be used only after cleaning and reassembling the pipe by completely removing the sludge conveyance blocking the inside of the pipe by directly separating the pipe line when a pneumatic conveyor is clogged. There is a troublesome and uncomfortable problem.

Waste transfer device using the pneumatic and hydraulic pressure (registered patent 10-0535906) previously registered by the present inventors is directly weighed by the strain gauge in the pressure reservoir, so it is difficult to quantify the exact amount is frequently clogged according to the amount In addition, there is a problem that there is a lot of friction loss in the conveying line and it may cause clogging.In addition, the conveyed material stored in the pressure reservoir is transported every certain time (2 to 3 minutes) specified by the timer regardless of the refreshment of the conveyed quantity Compressed air consumption is required a lot and there is a lot of problems of electricity and energy consumption.

In order to solve the above problems, the present invention collects dehydrated cakes or contaminants discharged from a dehydrator for lowering the water content of sludge generated in a sewage treatment plant and a contaminant treatment unit for treating a substance containing contaminants in a compressed sludge storage tank after compressed air. Transfer to the cake storage hopper to be taken out through the transfer line by using, but precisely weighing the amount that can be transported once to reduce the compressed air to be transported in an optimized state, and to reduce friction It is to provide a pneumatic conveyor system for reducing sludge and optimized sludge transfer that sprays organic coagulant into the transfer line to prevent clogging, prevent wear of the transfer line and easily dismantle the transfer line.

The pneumatic conveyor system of the present invention collects dehydration cakes or contaminants discharged from the dehydrator for lowering the water content of sludge generated in the sewage treatment plant and the contaminant treatment unit for treating the substances in which the foreign substances are mixed, and transports the air to the cake storage hopper for carrying out to the outside. It is a system to transfer by using.

The pneumatic conveyor system includes a conveying device unit for temporarily storing a dehydrated cake or contaminants to be sent to the cake storage hopper and intermittently discharging the dehydrated cake or contaminants by introducing compressed air; A metering hopper unit for inputting a predetermined capacity to the transfer unit; A transfer line configured to pipe dewatered cakes or contaminants from the transfer unit to the cake storage hopper; A flocculant injector for injecting an organic coagulant into the inlet of the transfer line to reduce frictional force with the transfer line when the dehydrated cake or contaminant is transferred to the transfer line; A compressed air supply unit for supplying compressed air used in the transfer unit and the metering hopper unit; It is composed of a control unit for controlling the conveying unit portion, the metering hopper portion and the flocculant injection unit of the pneumatic conveyor system.

The transfer device unit is a pressure storage tank for storing a predetermined amount of dehydrated cake or contaminants and the compressed air is introduced to transfer the dehydrated cake or contaminants; An inlet valve unit installed at an upper portion of the pressure reservoir to open and close the dehydration cake or the contaminant to be discharged to the bottom under pressure when the compressed air is drawn in when the inlet is closed; A guide hopper installed at an upper part of the inlet valve part and serving as a guide so that the dewatering cake and the contaminants discharged from the metering hopper part are introduced into the pressure storage tank without being separated out; Compressed air and washing water inlet for introducing the compressed air and the washing water into the upper portion of the pressure reservoir; The dehydration cake or the miscellaneous material which is installed in the lower portion of the pressure reservoir to be discharged with a minimum resistance, and is composed of a discharge portion for changing the direction to 90 °.

The metering hopper unit and a metering hopper in which the dewatered cake or the contaminants are stored for metering; A metering unit for measuring a weight of the dewatered cake or contaminants stored in the metering hopper and sending a measured signal to the controller; It is installed in the lower portion of the metering hopper and consists of a hopper gate portion for opening and closing the lower part of the metering hopper in response to a signal from the control unit.

The metering hopper has a transparent window formed from the top to the bottom so that the state of the inside can be seen, the metering unit is a load cell for converting the deformation of the elastic body by weight of the dehydrated cake or contaminants into an electrical signal to send to the control unit; The load cell is installed and is configured as a support on which the metering hopper is installed on the load cell.

The hopper gate portion is configured to include a gate that opens and closes a lower portion of the metering hopper, and a gate cylinder that opens and closes the gate by compressed air in response to a signal from a controller.

The gate is a slide gate type, moving forward and backward in one direction, the slide gate is a structure in which the sliding gate is closed when the piston rod of the gate cylinder moves forward, that is, the piston rod is removed, and the slide gate is opened when the piston rod enters the reverse.

The pressure reservoir is a pressure vessel consisting of a cylinder and a hard plate and the design pressure is 9kg / ㎠ or more, the inside of the pressure reservoir is the size of the diameter of the cylinder so that the dehydration cake or contaminant is discharged without stagnant and the bottom is the outlet A cone-shaped inner cone having a diameter of is formed, the compressed air inlet is provided with a compressed air automatic opening and closing valve for supplying or stopping compressed air in response to a signal from the control unit, the inlet valve is opened and closed the inlet valve; It is a structure consisting of the inlet valve cylinder for operating the inlet valve by the signal of the control unit.

An upper portion of the pressure reservoir is formed with an inlet port through which the dehydrating cake or contaminant enters, a compressed air inlet port through which the compressed air inlet unit is coupled, and a compressed air inlet port through which the compressed air is introduced, and a pressure gauge for measuring pressure is formed. The lower portion of the pressure reservoir is coupled to the discharge portion is formed with an outlet for discharging the dehydration cake or contaminants, the outer cylinder of the pressure reservoir is an air cylinder bracket in which the inlet valve cylinder is installed, and 3 to support the pressure reservoir Four support feet are formed.

The upper diameter of the guide hopper is more than 0.8 times the diameter of the cylinder so that the dewatering cake and the contaminants are introduced to the pressure reservoir without leaving the outside, the height is more than 0.6 times the diameter of the inlet for free rotation of the inlet valve to be.

The inlet valve may be a butterfly type that rotates the disc to open and close the inlet, or a dome type that opens and closes the inlet by rotating a hemispherical dome.

The discharge part is turned in the direction of 90 ° to the size of the discharge port to reduce the resistance in the pipe and prevent clogging, and the portion coupled with the transfer line is a reducer structure and flanges at both ends to facilitate dismantling when the transfer line is blocked. Is formed structure.

The compressed air supply unit stores the compressed air produced by the air compressor and acts as a cushion for the air receiver tank, a cylinder driven compressed air line supplied to drive the cylinder, and conveyed compressed air supplied to convey the dehydrated cake or contaminants. It consists of lines.

The cylinder driven compressed air line is installed in the inlet valve cylinder and the gate cylinder, respectively, and removes foreign substances in the compressed air, depressurizes to the required pressure, and installs an air unit box that supplies air and returns by a signal from the controller. The air unit box is an air filter for removing foreign matter in the compressed air, an air regulator for reducing the pressure to a required pressure, a lubricator for supplying lubricating oil added to the air for lubrication of the cylinder, and supply of compressed air It consists of a control valve set for controlling the air, a siren for reducing noise when exhausting the returned compressed air, and an outer cylinder in which the air unit box components are installed.

The flocculant jetting unit includes a flocculant storage tank for storing the flocculant to be used, a flocculant injection pump that sucks in the flocculant storage tank and pressurizes the flocculant to be injected, a flocculant injection nozzle for injecting the flocculant, and a spray nozzle in the flocculant cylinder. It is a structure composed of a coagulant line to connect.

Elbows with a radius of curvature of at least 10 times the diameter are used where the direction of the transfer line is changed to 90 °. A drain valve for drain is installed at the bottom of the transfer line, and the elbow is dismantled when the line is blocked. The flange type is used for easy replacement and replacement when worn. Reinforcement pad is installed on the outside in response to wear.

The aforementioned pneumatic conveyor system for reducing friction and optimizing sludge conveying can solve the problem to be solved of the present invention.

According to the above-described frictional force reduction and optimized pneumatic conveyor system for transporting sludge according to the present invention, the amount of compressed air is measured and conveyed so that the loss of compressed air is reduced, and the frictional force is reduced by using the appropriate amount and organic coagulant. The distance can be increased, thereby reducing the labor cost for cleaning and the power cost for operating the air compressor, and extending the service life of the system unit.

1 is a system configuration diagram according to the pneumatic conveyor system for sludge transfer and optimized friction force of the present invention
Figure 2 is a configuration of the conveying device according to the pneumatic conveyor system for sludge transport and optimized friction reduction of the present invention
Figure 3 is a schematic view of the pressure storage tank according to the pneumatic conveyor system for sludge transfer and friction force reduction of the present invention
Figure 4 is a schematic view of the weighing hopper part according to the pneumatic conveyor system for sludge transport and optimized friction reduction of the present invention
Figure 5 is a schematic diagram of the weighing hopper according to the pneumatic conveyor system for the sludge transfer and optimized friction force of the present invention
Figure 6 is a schematic view of the gate of the weighing hopper according to the pneumatic conveyor system for sludge transport and optimized friction reduction of the present invention
7 is a compressed air supply unit P & I diagram according to the pneumatic conveyor system for sludge transfer and optimized friction force of the present invention
8 is a schematic view of the air unit box according to the pneumatic conveyor system for sludge transport and optimized friction reduction of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users or operators, and the definitions are defined according to the present invention. It should be made based on the contents throughout this specification describing the "system."

Hereinafter, a preferred embodiment of the "pneumatic conveyor system for friction reduction and optimized sludge conveyance" according to the present invention will be described in detail with reference to the drawings. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

1 is a system configuration diagram according to the frictional force reduction and optimized sludge conveying pneumatic conveyor system of the present invention, Figure 2 is a configuration diagram of the transfer device according to the frictional force reduction and optimized sludge conveying pneumatic conveyor system of the present invention, Figure 3 is a schematic view of the pressure reservoir according to the frictional force reduction and optimized sludge conveying pneumatic conveyor system of the present invention, Figure 4 is a schematic diagram of the metering hopper part according to the frictional force reduction and optimized sludge conveying pneumatic conveyor system of the present invention, Figure 5 is a schematic diagram of the weighing hopper according to the frictional force reduction and optimized sludge conveying pneumatic conveyor system of the present invention, Figure 6 is a schematic view of the gate of a weighing hopper according to the frictional force reduction and optimized sludge conveying pneumatic conveyor system of the present invention, 7 denotes the frictional force of the present invention and optimized air pressure for sludge transfer The compressed air supply P & I also according to the Bayer system, Figure 8 is a schematic view of the air unit box pneumatic conveyor system for reducing friction according to the present invention and optimize the sludge feed.

As shown in FIG. 1, the pneumatic conveyor system A collects dehydration cakes or contaminants discharged from a dehydrator for lowering the water content of sludge generated in a sewage treatment plant and a contaminant treatment machine for treating a substance containing foreign substances. Conveyor system for transporting by using the air to the cake storage hopper (D) for carrying out.

The pneumatic conveyor system (A) includes a transfer unit (1) for temporarily storing a predetermined amount of dehydrated cakes or contaminants to be sent to the cake storage hopper (D) and introducing compressed air to intermittently discharge the dehydrated cakes or contaminants; A metering hopper part 2 for inputting a predetermined capacity to the conveying device part 1; A transfer line (3) piped from the transfer unit (1) to the cake storage hopper (D) so that dehydrated cakes or contaminants are transferred; Coagulant injection unit 4 for injecting organic coagulant into the inlet of the transfer line 3 to reduce friction with the transfer line 3 when the dehydration cake or contaminants are transferred to the transfer line 3 and ; A compressed air supply unit (5) for supplying compressed air used in the transfer unit (1) and the metering hopper unit (2); The feeder unit 1, the metering hopper unit 2, and the flocculant injection unit 4 of the pneumatic conveyor system A are controlled. When a predetermined weight is stored in the transfer unit, the transfer unit is operated to transfer It is composed of a control unit 6 for controlling to be transferred to the line.

The transfer device 1 includes a pressure storage tank 11 for storing a predetermined amount of dehydrated cake or contaminants and introducing compressed air to transfer the dehydrated cake or contaminants; An inlet valve unit installed at an upper portion of the pressure reservoir 11 to open when the dewatered cake or contaminant is introduced and closed after completion of the intake, so that the pressure reservoir 11 is pressurized and discharged downward when compressed air is introduced; 12; A guide hopper installed at an upper portion of the inlet valve part 12 and serving as a guide so that the dewatering cake and the contaminants discharged from the metering hopper part 2 are introduced into the pressure storage tank 11 without leaving the outside; 13); The compressed air, which is a power to transfer the dewatering cake and the contaminants by supplying pressure to the upper portion of the pressure reservoir 11, and the washing water used to clean the pressure reservoir 11 and the transfer line 3 are drawn in. Compressed air and washing water inlet unit 14 to make it possible; The dehydration cake or the miscellaneous material which is installed at the lower portion of the pressure reservoir 11 to be discharged with a minimum resistance, and is composed of a discharge portion 15 for changing the direction to 90 °.

Where the direction is changed to 90 ° in the transfer line 3 it is preferable to use an elbow 31 having a radius of curvature of 10 times or more.

A drain valve 32 for draining is installed at the bottom of the transfer line 3.

The elbow 31 is a structure that facilitates disassembly when the line is blocked and uses a flange type 33 for replacement when worn, and an external reinforcement pad 311 is installed in response to wear.

The compressed air inlet unit 14 has a compressed air automatic opening / closing valve 141 for supplying or stopping compressed air in response to a signal from the control unit 6, and a compressed air on / off valve 142 for manually opening or closing the supply of compressed air. ) And a washing water automatic opening / closing valve 143 for automatically opening and closing the washing water.

The coagulant injector 4 includes a coagulant storage tank 41 for storing a coagulant to be used, a coagulant injection pump 42 which sucks in the coagulant storage tank 41 and pressurizes the coagulant to be injected, It comprises a coagulant injection nozzle 43 for injecting a coagulant, and a coagulant line 44 for connecting the injection nozzle 43 in the coagulant storage tank 41.

The flocculant serves to prevent dehydration cake or contaminants from adhering to the transfer line and to reduce frictional force, and it is preferable to use the same polymer type organic flocculant as used in the dehydrator. After setting, the coagulant injection pump 42 is controlled by a timer.

When the flocculant is added, the dehydration cake and the input of the contaminant may be added once in two to three times when there is no blockage of the transfer line.

The conveying amount per unit time of the pneumatic conveyor system (A) can be smoothly conveyed only if the dehydration cake and the contaminant is supplied at least 30% greater than the amount per unit time.

Referring to the operation procedure and method of the pneumatic conveyor system of the present invention.

In a first step, a feed amount of the dewatering cake and the contaminants to be transferred to the metering hopper unit 2 is set so that an appropriate amount of the dewatering cake and the contaminants are stored in the pressure storage tank 11.

The second step is to set the time to inject the organic coagulant in the flocculant injection unit 4, the injection time is set to about 1 minute longer than the transfer time and start spraying 20 ~ 30 seconds before the start of the transfer.

The injection amount of the organic coagulant is calculated by calculating the required amount when transferring the amount of the dehydrated cake and the contaminant at the proper speed, and the discharge amount of the coagulant injection pump 42 is calculated by the injection time and the organic coagulant injection amount to determine the proper discharge amount after the test. Confirm.

The third step is to set the washing water input time to be able to clean the pressure reservoir 11 and the transfer line (3) in an appropriate amount after the completion of the transfer, and to prevent too much washing water is added.

In the fourth step, the compressed air input amount is set, but the compressed air input amount is set by adjusting the compressed air input amount adjusting valve 531, and when the washing water is introduced, the compressed air input / output valve closes with the compressed air open / close valve 142, and the compressed air input amount The adjustment valve 531 is preferably a needle valve type or globe valve type that can adjust the injection amount.

In the fifth step, the transfer time of the dewatered cake and the contaminants is set, and the transfer time is determined by the transfer amount of the dehydrated cake and the contaminants, the working pressure of the compressed air, the size of the transfer line, and the like. .

The sixth step is to start the dehydration cake and the input of the debris to the weighing filter unit 2 after the setting of the first to fifth steps is completed.

In the seventh step, the amount of inflow of the dehydration cake and the contaminants introduced into the load cell 221 installed in the girder hopper 21 is measured and the set amount is reached. The gate 231 of the hopper gate part 23 is opened to open the dewatering cake. And the impurities are discharged to the guide hopper (13).

In the eighth step, the dewatering cake and the condensate accumulated in the guide hopper 13 are opened, the inlet valve 121 is opened to be introduced into the pressure reservoir 11, and the inlet valve 121 is closed.

In the ninth step, the organic coagulant is sprayed on, and the organic coagulant is applied to the line in advance.

In order to introduce the compressed air into the tenth step, the compressed air automatic opening / closing valve 141 of the compressed air inlet unit 14 is opened to inject the compressed air to start the transfer of the dehydrated cake and the impurities.

When the dewatering cake and the contaminant are transferred in the eleventh step, the washing water automatic opening / closing valve 143 is opened to clean the pressure reservoir 11 and the transfer line 3 with washing water, and the cake storage hopper D The wash water is discharged to the bottom drip tray installed at the bottom of the tank.

In the twelfth step, the drain valve 32 installed in the transfer line 3 is opened to discharge the washing water accumulated in the transfer line 3 without being discharged to the lower drip tray.

Since the proper amount of dehydrated cakes and contaminants is measured and transported by the above-mentioned operating procedures and methods, the loss of compressed air is reduced, and the frictional force is reduced by using the appropriate amount and organic coagulant. It is possible to reduce labor costs and power costs for operating the air compressor, and to extend the service life of the system device.

As shown in FIG. 2, the conveying apparatus unit 1 includes a pressure storage tank 11 for storing a predetermined amount of dehydrated cakes or contaminants and introducing compressed air to convey the dehydrated cakes or contaminants; An inlet valve unit installed at an upper portion of the pressure reservoir 11 to open when the dewatered cake or contaminant is introduced and closed after completion of the intake, so that the pressure reservoir 11 is pressurized and discharged downward when compressed air is introduced; 12; A guide hopper installed at an upper portion of the inlet valve part 12 and serving as a guide so that the dewatering cake and the contaminants discharged from the metering hopper part 2 are introduced into the pressure storage tank 11 without leaving the outside; 13); A compressed air inlet unit (14) for introducing the compressed air into the upper portion of the pressure reservoir (11); The dehydration cake or the miscellaneous material which is installed at the lower portion of the pressure reservoir 11 to be discharged with a minimum resistance, and is composed of a discharge portion 15 for changing the direction to 90 °.

The pressure reservoir 11 is composed of a cylinder 111 and the hard plate 112 and a pressure vessel having a design pressure of 9kg / ㎠ or more.

Inside the pressure reservoir 11 is formed a cone-shaped inner cone 113 of which the upper portion is the diameter size of the cylinder 111 and the lower portion is the diameter size of the outlet 117 so that the dehydration cake or contaminants are discharged without stagnation. do.

The compressed air inlet unit 14 has a compressed air automatic opening / closing valve 141 for supplying or stopping compressed air in response to a signal from the control unit 6, and a compressed air on / off valve 142 for manually opening or closing the supply of compressed air. ) And a washing water automatic opening / closing valve 143 for automatically opening and closing the washing water.

The compressed air automatic open / close valve 141 and the washing water automatic open / close valve 143 may preferably use a solenoid valve that is automatically closed and opened by a signal from the controller 6.

The inlet valve unit 12 has a structure consisting of an inlet valve 121 to be opened and closed, and an inlet valve cylinder unit 122 for operating the inlet valve 121 by the signal of the controller 6. The valve 121 is preferably a butterfly type for rotating the disc to open and close the inlet, or a dome type for opening and closing the inlet by rotating a hemispherical dome.

The upper diameter of the guide hopper 13 is 0.8 times or more of the diameter of the cylinder so that the dewatering cake and the contaminants do not escape to the outside, and enter the pressure reservoir 11, and the height of the guide hopper 13 freely rotates the inlet valve 121. For this reason, it is preferable that the structure is 0.6 times or more of the inlet diameter.

The discharge unit 15 is changed in the direction of 90 ° to the size of the discharge port 117 in order to reduce the resistance in the pipe and prevent clogging, and the portion coupled with the transfer line 3 is a reducer 151 structure and the It is preferable that the flange 152 is formed at both ends to facilitate dismantling when the transfer line is blocked.

As shown in FIG. 3, the pressure reservoir 11 stores a predetermined amount of dehydrated cake or contaminants and introduces compressed air to transfer the dehydrated cake or contaminants.

The pressure reservoir 11 is a pressure vessel consisting of a cylinder 111 and a hard plate 112, the design pressure is 9kg / ㎠ or more, a pressure gauge (1161) for displaying the pressure of the pressure reservoir 11 is installed and the pressure gauge 1116 indicates that a Bourdon tube is installed in front of the pressure gauge 1161 to display the correct pressure, and a block valve must be installed in order to replace the failure of the pressure gauge 1161 during operation.

Inside the pressure reservoir 11 is formed a cone-shaped inner cone 113 of which the upper portion is the diameter size of the cylinder 111 and the lower portion is the diameter size of the outlet 117 so that the dehydration cake or contaminants are discharged without stagnation. do.

The upper portion of the pressure reservoir (11), the inlet port 114 through which the dehydration cake or contaminant enters, the compressed air inlet unit 14 is coupled to the compressed air inlet port 115 through which the compressed air is introduced, and the pressure is measured. The pressure gauge attachment hole 116 to which the pressure gauge 1161 is attached is formed, and the inlet valve 121 is coupled to the inlet 114.

The lower portion of the pressure reservoir 11 is coupled to the discharge portion 15 is formed with a discharge port 117 through which the dehydration cake or contaminants are discharged.

The outer cylinder of the pressure reservoir 11 is formed with a cylinder bracket 118 in which the inlet valve cylinder 122 is installed, and three to four support feet 119 for supporting the pressure reservoir 11.

As shown in FIG. 4, the metering hopper part 2 is for inputting a predetermined capacity to the conveying device part 1, and a dehydrator and a foreign substance mixed with a dehydrator for lowering the water content of sludge generated in a sewage treatment plant. When the dehydration cake or the condensate discharged from the contaminant treatment unit for processing falls on the screw conveyor (C) is transferred to the screw conveyor (C) to the top to receive the dewatered cake or condensate discharged from the outlet of the screw conveyor (C).

The metering hopper unit 2 includes a metering hopper 21 for storing the dewatered cake or the contaminants; A metering unit 22 for measuring a weight of the dewatered cake or contaminants stored in the metering hopper 21 and sending a measured signal to the controller 6; It is provided in the lower portion of the metering hopper 21 is composed of a hopper gate portion 23 for opening and closing the lower part of the metering hopper 21 in response to the signal of the controller (6).

The metering unit 22 converts the deformation of the elastic body due to the weight of the dehydrated cake or contaminant into an electrical signal and sends the load cell 221 to the control unit 6, and the load cell 221 is installed and the load cell 221. It consists of a support 222 on which the metering hopper 21 is installed.

The hopper gate portion 23 may include a gate 231 that opens and closes a lower portion of the metering hopper 21, and a gate cylinder 232 that opens and closes the gate 231 by compressed air in response to a signal from the controller 6. Is a structure composed of

A work bench 223 is formed around the metering hopper 21 to allow a worker to check the weighing state and to perform maintenance work.

If necessary, a hand lane may be installed at the edge of the work table 223 to prevent the worker from falling.

As shown in FIG. 5, the metering hopper 21 should be inclined in a quadrangular or circular shape so that the dewatered cake or the contaminant is well discharged.

On the side wall of the metering hopper 21, a transparent window 211 is formed from the top to the bottom so that the state of the inside can be seen so that the dehydrated cake or the debris discharged from the outlet of the screw conveyor C is stacked. To be able.

In addition, four brackets 213 are formed on the sidewall of the metering hopper 21 so as to be placed on the load cell 221 to measure the weight of the contents of the metering hopper 21.

A discharge port 212 is formed in the lower portion of the metering hopper 21 to discharge the dehydrated cake or contaminants, and a gate casing 2312 of the gate 231 of the hopper gate portion 23 is formed at the discharge port 212. Combined, the slide gate 2311 is closed and opened while moving forward and backward from the inside.

As shown in FIG. 6, the gate 231 moves forward or backward in one direction in a slide gate type.

The gate 231 has a plate shape and a slide gate 2311 which is combined with the gate cylinder 232 to move forward or backward, and the slide gate 2311 is horizontally seated therein, and the gate cylinder 232 is sided. And a gate casing 2312 coupled to the outlet 212 of the metering hopper 21.

The slide gate 2311 is closed when the piston rod 2321 of the gate cylinder 232 moves forward, that is, when the piston rod 2321 is removed, and opens when the piston rod 2321 enters.

A flange 23121 is formed at an upper edge of the gate casing 2312 to be bolted to the outlet 212 of the metering hopper 21, and an open portion into which the dehydrating cake or contaminant is introduced is formed at the upper portion of the gate casing 2312. The structure 2313 is formed.

A guide roller 23122 is formed in the gate casing 2312 to allow the slide gate 2311 to smoothly move forward and backward horizontally.

As shown in FIG. 7, the compressed air supply unit 5 stores the compressed air produced by the air compressor E not included in the scope of the present invention, and serves as a cushion and an air receiver tank 51. Composed of a cylinder drive compressed air line 52 is supplied to drive the and the compressed compressed air line 53 is supplied to convey the dehydrated cake or contaminants.

The cylinder-driven compressed air line 52 is installed in the inlet valve cylinder 122 and the gate cylinder 232, respectively, to remove foreign substances in the compressed air, to reduce the pressure to the required pressure and to supply air by a signal from the controller. The returned air unit boxes 521a and 521b are installed.

The conveyed compressed air line 53 is provided with a compressed air input amount adjustment valve 531 for adjusting the input amount of the compressed air, the compressed air input amount adjustment valve 531 has a flow rate according to the opening degree to control the flow rate It is preferable that the needle valve type or the globe valve type be changed almost constant.

As shown in FIG. 8, the air unit boxes 521a and 521b include an air filter 5211 for removing foreign matter in the compressed air, an air regulator 5212 for reducing the pressure to a required pressure, and lubricating the cylinder. Lubricating unit (5213) for supplying lubricating oil added to the air, the control valve set (5214) for controlling the supply of compressed air, and a siren (5215) for reducing noise when exhausting the returned compressed air And an outer cylinder 5216 in which the components of the air unit boxes 521a and 521b are installed.

According to the above-described frictional force reduction and optimized pneumatic conveyor system for transporting sludge according to the present invention, the amount of compressed air is measured and conveyed so that the loss of compressed air is reduced, and the frictional force is reduced by using the appropriate amount and organic coagulant. The distance can be increased, thereby reducing the labor cost for cleaning and the power cost for operating the air compressor, and extending the service life of the system unit.

A: Pneumatic conveyor system B: Dehydrator or contaminant disposal
C: Screw Conveyor D: Cake Storage Hopper
E: Air Compressor
1: transfer unit 11: pressure reservoir
111: cylinder 112: hard plate
113: internal cone 114: inlet
115: compressed air inlet 116: pressure gauge attachment port
1161: pressure gauge 117: outlet
118: cylinder bracket 119: support foot
12: inlet valve section 121: inlet valve
122: inlet valve cylinder portion 13: guide hopper
14: compressed air and washing water inlet 141: compressed air automatic opening and closing valve
142: compressed air opening and closing valve 143: automatic washing and closing valve
15: discharge part 151: reducer
152: flange
2: Weighing Hopper 21: Weighing Hopper
211: transparent window 212: outlet
213: Bracket
22: metering unit 221: load cell
222: support 223: working table
23: hopper gate portion 231: gate
2311: slide gate 2312: gate casing
23121: flange 23122: guide roller
2313: open section
232: gate cylinder 2321: piston rod
3: transfer line 31: elbow
311: reinforcement pad 32: drain valve
33: flange type
4: flocculant injection part 41: flocculant storage tank
42: coagulant injection pump 43: coagulant injection nozzle
44: flocculant line
5: compressed air supply unit 51: air receiver tank
52: cylinder driven compressed air line 521a, b: air unit box
521a: Air unit box for inlet valve cylinder
521b: Air unit box for metering hopper gate cylinder
5211: Air filter 5212: Air regulator
5213: Lubricater 5214: Can control valve set
5215: Silencer 5216: outer cylinder
53: conveying compressed air line 531: compressed air input flow control valve
6: control unit 61: control line

Claims (9)

Dehydrator for lowering the water content of sludge generated in sewage treatment plant and dehydration cake or debris discharged from the contaminant treatment unit for treating the substances containing foreign substances are collected and transported by air to the cake storage hopper (D) to be taken out In the pneumatic conveyor system (A),
The pneumatic conveyor system (A) includes a transfer unit (1) for temporarily storing a predetermined amount of dehydrated cakes or contaminants to be sent to the cake storage hopper (D) and introducing compressed air to intermittently discharge the dehydrated cakes or contaminants;
A metering hopper part 2 for inputting a predetermined capacity to the conveying device part 1;
A transfer line (3) piped from the transfer unit (1) to the cake storage hopper (D) so that dehydrated cakes or contaminants are transferred;
Coagulant injection unit 4 for injecting organic coagulant into the inlet of the transfer line 3 to reduce friction with the transfer line 3 when the dehydration cake or contaminants are transferred to the transfer line 3 and ;
A compressed air supply unit (5) for supplying compressed air used in the transfer unit (1) and the metering hopper unit (2);
The feeder unit 1, the metering hopper unit 2, and the flocculant injection unit 4 of the pneumatic conveyor system A are controlled. When a predetermined weight is stored in the transfer unit, the transfer unit is operated to transfer It is composed of a control unit 6 for controlling to be transferred to the line,
The transfer device 1 includes a pressure storage tank 11 for storing a predetermined amount of dehydrated cake or contaminants and introducing compressed air to transfer the dehydrated cake or contaminants;
An inlet valve unit installed at an upper portion of the pressure reservoir 11 to open when the dewatered cake or contaminant is introduced and closed after completion of the intake, so that the pressure reservoir 11 is pressurized and discharged downward when compressed air is introduced; 12;
A guide hopper installed at an upper portion of the inlet valve part 12 and serving as a guide so that the dewatering cake and the contaminants discharged from the metering hopper part 2 are introduced into the pressure storage tank 11 without leaving the outside; 13);
A compressed air and washing water inlet unit 14 for introducing the compressed air and the washing water into the upper portion of the pressure reservoir 11;
The frictional force reduction and optimization, which is a structure consisting of the discharge portion 15 is installed in the lower portion of the pressure reservoir 11 to discharge the dehydrating cake or contaminants discharged with a minimum resistance, the direction is changed to 90 ° Conveyor system for conveying sludge
The method of claim 1,
The metering hopper unit 2 includes a metering hopper 21 for storing the dewatered cake or the contaminants;
A metering unit 22 for measuring a weight of the dewatered cake or contaminants stored in the metering hopper 21 and sending a measured signal to the controller 6;
Is provided in the lower portion of the metering hopper 21 is composed of a hopper gate portion 23 for opening and closing the lower part of the metering hopper 21 by the signal of the control unit 6,
The metering hopper 21 has a transparent window 211 is formed long from the top to the bottom to see the state of the inside,
The metering unit 22 converts the deformation of the elastic body due to the weight of the dehydrated cake or contaminant into an electrical signal and sends the load cell 221 to the control unit 6, and the load cell 221 is installed and the load cell 221. ) Is composed of a support 222 on which the metering hopper 21 is installed,
The hopper gate portion 23 may include a gate 231 that opens and closes a lower portion of the metering hopper 21, and a gate cylinder 232 that opens and closes the gate 231 by compressed air in response to a signal from the controller 6. Pneumatic conveyor system for sludge transfer and reduced frictional force, characterized in that the structure consisting of
The method of claim 1,
The pressure reservoir 11 is made of a cylinder 111 and the hard plate 112 and is a pressure vessel having a design pressure of 9kg / ㎠ or more,
Inside the pressure reservoir 11 is formed a cone-shaped inner cone 113 of which the upper portion is the diameter size of the cylinder 111 and the lower portion is the diameter size of the outlet 117 so that the dehydration cake or contaminants are discharged without stagnation. Become,
The compressed air inlet unit 14 has a compressed air automatic opening / closing valve 141 for supplying or stopping compressed air in response to a signal from the control unit 6, and a compressed air on / off valve 142 for manually opening or closing the supply of compressed air. ), And the washing water automatic opening and closing valve 143 for automatically opening and closing the washing water is installed,
The inlet valve unit 12 is characterized in that the structure consisting of the inlet valve 121 to be opened and closed, and the inlet valve cylinder portion 122 for operating the inlet valve 121 by the signal of the control unit (6). Pneumatic conveyor system for sludge transfer and optimized friction reduction
The method of claim 1,
The compressed air supply unit 5 is an air receiver tank 51 that stores and cushions the compressed air produced by the air compressor E, a cylinder driven compressed air line 52 supplied to drive the cylinder, and the Consists of a feed compressed air line 53, which is supplied to feed dehydrated cake or contaminants,
The cylinder-driven compressed air line 52 is installed in the inlet valve cylinder 122 and the gate cylinder 232, respectively, to remove foreign substances in the compressed air, to reduce the pressure to the required pressure and to supply air by a signal from the controller. The returned air unit boxes 521a and 521b are installed,
The conveyed compressed air line 53 is provided with a compressed air input amount adjusting valve 531 for adjusting the input amount of the compressed air,
The air unit boxes 521a and 521b supply an air filter 5211 to remove foreign substances in the compressed air, an air regulator 5212 to reduce the pressure to a required pressure, and supply lubricant to the air for lubrication of the cylinder. A lubricator (5213), a control valve set (5214) for controlling the supply of compressed air, a silencer (5215) for reducing noise when discharging the returned compressed air, and the air unit box (521a) , Pneumatic conveyor system for reducing sludge and optimized sludge conveying, consisting of an outer cylinder 5216 in which the components of the engine 521b are installed.
delete The method of claim 1,
The coagulant injector 4 includes a coagulant storage tank 41 for storing a coagulant to be used, a coagulant injection pump 42 which sucks in the coagulant storage tank 41 and pressurizes the coagulant to be injected, Frictional force reduction and optimized sludge transfer, characterized in that the structure consisting of a coagulant injection nozzle 43 for injecting a coagulant, and a coagulant line 44 connecting the injection nozzle 43 in the coagulant storage tank 41. Pneumatic Conveyor System
The method of claim 1,
Where the direction is changed to 90 ° in the transfer line (3) uses an elbow (31) having a radius of curvature of 10 times or more,
A drain valve 32 for draining is installed at the lowermost part of the transfer line 3,
The elbow 31 facilitates dismantling when the line is clogged and uses a flange type 33 for replacement when worn, and has an external friction reinforcement pad 311 in response to wear. Pneumatic conveyor system for reduced and optimized sludge conveying
The method of claim 2,
The gate 231 is a slide gate type, and has a plate shape, a slide gate 2311 that is coupled to the gate cylinder 232 to move forward or backward, and the slide gate 2311 is horizontally seated therein, and the gate cylinder The pneumatic conveyor system for friction reduction and optimized sludge transfer, characterized in that the structure is composed of a gate casing (2312) is coupled to the side and coupled to the outlet 212 of the metering hopper (21)
The method of claim 3,
The upper portion of the pressure reservoir (11), the inlet port 114 through which the dehydration cake or contaminant enters, the compressed air inlet unit 14 is coupled to the compressed air inlet port 115 through which the compressed air is introduced, and the pressure is measured. The pressure gauge attachment port 116 to which the pressure gauge 1161 is attached is formed,
The lower portion of the pressure reservoir 11 is coupled to the discharge portion 15 is formed with a discharge port 117 for discharging the dehydrated cake or contaminants,
The outer cylinder of the pressure reservoir 11 is formed with a cylinder bracket 118, the inlet valve cylinder 122 is installed, and three to four support feet 119 for supporting the pressure reservoir 11,
The inlet valve 121 is a butterfly (Butterfly type) for opening and closing the inlet by rotating the disc or a dome (Dome) type for opening and closing the inlet by rotating the dome of the hemispherical dome (Dome) is used,
The discharge unit 15 is changed in the direction of 90 ° to the size of the discharge port 117 in order to reduce the resistance in the pipe and prevent clogging, and the portion coupled with the transfer line 3 is a reducer 151 structure and the Reduced friction and optimized sludge conveying pneumatic conveyor system, characterized in that the flange 152 is formed at both ends to facilitate dismantling when the transfer line is blocked.

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