Tar residue collecting, loading, transporting and unloading system and process
Technical Field
The invention relates to the technical field of tar residue treatment in the coking industry, in particular to a tar residue collecting, loading, transporting and unloading system and a tar residue collecting, loading, transporting and unloading process.
Background
At present, in the production of coking enterprises, a large amount of tar residues are generated. The tar slag is used as a waste, is discharged through a slag discharge port of a tar and ammonia water clarification mechanical slag scraping groove, and is collected and treated, so that the tar slag is a common mode adopted by most coking enterprises. In general, a cement tank is placed below a slag discharge port of a tar ammonia water clarifying tank, tar slag is manually drawn out into a tar slag box, and then the tar slag is poured from a tar slag placement point of the tar slag box.
Because the tar slag has high viscosity and long discharge time, a large amount of ammonia gas, naphthalene and other toxic and harmful gases are discharged together with the tar slag, and the tar ammonia water is directly discharged between the slag discharge port of the tar ammonia water clarifying tank and the cement tank, so that the environment is greatly polluted, and the health of workers is threatened.
Because the tar residue box is difficult to carry and long in back and forth time, workers closely contact the tar residue box again, repeated pollution is caused to the environment in the transportation process, the actions are complicated when the tar residue is dumped, the box body is easy to be stained with tar, the process for treating the tar residue is behind, the environmental pollution is serious, the national requirements for pollutant treatment are not met, and the tar residue is inconvenient to use.
Disclosure of Invention
In order to solve the technical problems, the invention provides a tar residue collecting, loading, transporting and unloading system and a tar residue collecting, loading, transporting and unloading process, which realize full sealing and innocuity of tar residue collecting, loading, transporting and unloading processes and realize mechanization and automation of tar residue collecting, loading, transporting and unloading.
In order to achieve the above purpose, the invention adopts the following technical scheme:
A tar residue collecting, loading, transporting and unloading system comprises a screw conveyor, a temporary residue storage tank, a plunger pump system, a loading sealing device, a tar residue moving storage hopper, an AGV trolley, an unloading device and a receiving hopper, wherein one or more feeding ports of the screw conveyor are in sealing connection with one or more residue discharging ports of the residue scraping tank through pipelines, one or more discharging ports of the screw conveyor are in sealing connection with the temporary residue storage tank through pipelines, the temporary residue storage tank is connected with the plunger pump system, an outlet main pipeline of the plunger pump system is in sealing connection with the tar residue moving storage hopper through the loading sealing device, the tar residue moving storage hopper is placed on the AGV trolley and transported to the receiving hopper through the AGV trolley, and the unloading device overturns the tar residue moving storage hopper to pour tar residue into the receiving hopper.
The top of the temporary slag storage tank is in sealing connection with the discharge opening of the screw conveyor through a pipeline, hot water pipes are spirally distributed outside the temporary slag storage tank, a discharge opening at the bottom of the slag storage tank is connected with a gate valve, an expansion joint is connected below the gate valve, and the expansion joint is connected with a plunger pump system.
The plunger pump system outlet main pipeline is provided with a valve, a branch pipeline is connected with the slag scraping groove, and the branch pipeline is provided with a valve.
The tar residue mobile storage hopper comprises a frame, a hopper body, a counterweight lever and a sealing cover, wherein the hopper body is fixedly connected in the frame, the side face of the hopper body is semi-spiral, the counterweight lever and the sealing cover are arranged on a rotating shaft, the rotating shaft is arranged on the frame, two slots are respectively arranged on two side faces of the frame, a column foot is arranged at the bottom of the frame, an electric gate valve and a material level meter are arranged on the sealing cover, a water seal groove is arranged above the electric gate valve, and a sealing ring is arranged on the periphery below the sealing cover.
The charging sealing device comprises a sealing cover, a metal hose, an exhaust pipe and a first hydraulic cylinder, wherein the sealing cover is fixedly connected to a push rod of the first hydraulic cylinder, an inverted funnel-shaped closing-in is arranged at the top of the sealing cover, a horizontal annular knife beam is arranged at the bottom of the sealing cover, one end of the metal hose is connected with a main pipeline at an outlet of a plunger pump system, the other end of the metal hose extends into the sealing cover from the closing-in of the sealing cover, one end of the exhaust pipe is connected with the closing-in, and the other end of the exhaust pipe is connected with a negative-pressure exhaust pipeline.
The AGV dolly is equipped with planar head that bumps in the dead ahead, and the top surface is equipped with square awl groove.
The discharging device comprises a turnover body, a rack and a second hydraulic cylinder, wherein an inserting strip is arranged at one end of the turnover body, a semicircular gear is arranged at the other end of the turnover body, the turnover body is hinged to the receiving hopper, the semicircular gear is meshed with the rack, the rack is fixedly connected to a push rod of the second hydraulic cylinder, and a base of the second hydraulic cylinder is fixedly connected to the receiving hopper.
The process for collecting, loading, transporting and unloading tar residues comprises the following steps:
1) The tar slag is discharged through a slag discharge port of a tar ammonia water clarification mechanical slag scraping groove, enters a screw conveyor from a feed port of the screw conveyor, is conveyed and collected by the screw conveyor, and is discharged into a temporary slag storage groove from a discharge port of the screw conveyor;
2) The tar residue movable storage hopper is placed on an AGV trolley, the AGV trolley drives to be right below the charging sealing device, an electric gate valve of a tar residue movable storage hopper sealing cover is opened, and a hydraulic cylinder of the charging sealing device pushes a horizontal annular knife beam to move downwards and be inserted into a water sealing groove, so that sealing is realized;
3) The tar residue in the temporary residue storage tank is pumped into a metal hose of a charging sealing device through a plunger pump system by a main pipeline at an outlet of the plunger pump system, and is injected into a tar residue mobile storage hopper by the metal hose;
4) Closing the electric gate valve of the sealing cover, and driving the horizontal annular knife beam to move upwards by a first hydraulic cylinder of the charging sealing device to leave the water sealing groove;
5) If the accumulated water in the temporary slag storage tank exceeds a set value, closing a main pipeline valve at an outlet of the plunger pump system, opening a branch pipeline valve, and pumping the accumulated water into a tar and ammonia water clarifying mechanical slag scraping tank through the plunger pump system;
6) AGV dolly is carried tar residue and is removed storage hopper and drive to receive hopper department, inserts the discharge apparatus cutting in the tar residue removes storage hopper both sides slot, and discharge apparatus second pneumatic cylinder drives tar residue and removes the storage hopper upset, and the sealed lid of storage hopper is driven by the counter weight lever and is opened, and tar residue in the storage hopper is poured into in the receiving hopper.
Compared with the prior art, the invention has the beneficial effects that:
1. The tar and ammonia water clarifying machine of the invention has the advantages that the scraping groove is connected with the spiral conveyor in a sealing way through a pipeline, the spiral conveyor is connected with the temporary storage groove in a sealing way through a pipeline, and the sealing of the tar slag filled into the tar slag movable storage hopper from the temporary storage groove is realized through the charging sealing device.
The invention realizes the whole sealing of the tar residue from the residue discharge port of the tar ammonia water clarifying mechanical residue scraping groove to the material receiving hopper, the water discharge and the exhaust are both extracted by the pipeline, no waste residue, waste water and waste gas overflow in the whole process, and the whole process realizes harmless treatment, thereby being beneficial to environmental protection.
2. According to the invention, hot water pipes are spirally distributed outside the temporary slag storage tank in a spiral manner, materials in the temporary slag storage tank can be heated, a discharge hole at the lower part of the slag storage tank is used for discharging a pipeline, the hot water pipes are connected with a fully-sealed electrohydraulic gate valve, and a stainless steel expansion joint is connected below the gate valve to counteract thermal deformation.
3. The main pipeline at the outlet of the plunger pump system is provided with a branch pipeline which is connected with a slag scraping groove, the branch pipeline is provided with a valve, if more water is accumulated in the temporary slag storage groove, the water can be pumped back into the tar ammonia water clarifying mechanical slag scraping groove through the plunger pump system by the branch pipeline, and the exhaust pipe of the charging sealing device is connected with the negative pressure exhaust pipeline of the tar ammonia water clarifying mechanical slag scraping groove, so that exhaust gas is conveniently discharged, and meanwhile, the valve is arranged to prevent gas from leaking when the device is not in operation.
4. The top of the tar residue mobile storage hopper is provided with the sealing cover, the sealing cover is provided with the electric gate valve and the material level gauge, the water sealing groove is arranged above the electric gate valve, the sealing ring is arranged on the periphery below the sealing cover, and meanwhile, the charging sealing device is also arranged, so that the sealing of the tar residue charging process from the temporary residue storage groove to the tar residue mobile storage hopper is ensured, and no waste residue, waste water and waste gas overflow.
5. The invention is provided with the charging sealing device, the AGV trolley and the discharging device, realizes the mechanization and automation of the whole process of charging the tar residue from the temporary residue storage tank into the movable storage hopper, transporting the tar residue to the receiving hopper and discharging the tar residue from the movable storage hopper into the receiving hopper, reduces the labor intensity of operators, ensures the personal safety of the operators, and improves the operating efficiency.
6. The invention adopts the AGV trolley for transportation, and the AGV trolley is provided with an electromagnetic automatic guiding device, can travel along a specified guiding path and is a transport vehicle with safety protection and various transfer functions. Three AGVs and control computer (control cabinet), navigation equipment, battery charging outfit and peripheral appurtenance constitute AGV system, and under control computer's control and task scheduling, the AGV dolly can be accurate walk according to prescribed route, after arriving the task assigned position, accomplish a series of operation tasks, and control computer can be according to the automatic charging of whether charging area is decided to AGV self electric quantity.
7. The tar residue removes storage hopper and is equipped with the column shoe and supports the storage hopper, has the square frustum of falling on the AGV dolly frame, and square frustum's bottom is column shoe size +1mm's tolerance, can be when removing the storage hopper and put down on the AGV dolly frame, automatic centering, need not to use various detecting instrument to confirm whether the storage hopper returns to the original position.
8. The front of the AGV trolley frame is made into a planar collision head, oblique angles of +/-60 degrees are formed on two sides of the width of 1 meter, a guide frame and a positioning clamping groove are installed on the ground of a target area, and the parking accuracy of the AGV trolley can be guaranteed to be not more than 10 mm. Thus, the parking precision of the AGV trolley is guaranteed, and the cost investment of remote control equipment for various measurements of positioning precision is reduced.
Drawings
FIG. 1 is a schematic front view of the structure of the collecting and loading section of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic side view of the collection and loading portion structure of the present invention;
FIG. 4 is a schematic front view of the tar residue mobile storage hopper and AGV trolley of the present invention;
FIG. 5 is a schematic side view of the structure of the tar residue mobile storage hopper and AGV of the present invention;
FIG. 6 is a schematic top view of the structure of the tar residue mobile storage hopper and AGV of the present invention;
FIG. 7 is a schematic diagram of the structure of the movable tar residue storage hopper, AGV trolley, discharging device and receiving hopper of the invention.
In the drawing, a 1-shaftless screw conveyor, a 2-temporary slag storage tank, a 3-charging sealing device, a 4-tar slag moving storage hopper, a 5-AGV trolley, a 6-discharging device, a 7-receiving hopper, an 8-tar ammonia water clarifying mechanical slag scraping tank, a 9-plunger pump system, a 10-negative pressure exhaust pipeline, a 21-hot water pipe, a 22-full-sealing electro-hydraulic gate valve, a 23-expansion joint, a 101-electric ball valve, a 31-sealing cover, a 32-metal hose, a 33-exhaust pipe, a 34-first hydraulic cylinder, a 41-frame, a 42-bucket body, a 43-counterweight lever, a 44-sealing cover, a 441-electric gate valve, a 442-water sealing tank, a 45-slot, a 46-column foot, a 47-rotating shaft, a 51-conical tank, a 52-latch head, a 61-rack, a 62-second hydraulic cylinder, a 63-bar and a 64-semicircular gear are arranged;
Detailed Description
Examples:
the following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1-7, a tar residue collecting, loading, transporting and unloading system comprises a shaftless screw conveyor 1, a temporary residue storage tank 2, a loading sealing device 3, a tar residue moving storage hopper 4, an AGV trolley 5, an unloading device 6, a receiving hopper 7 and a plunger pump system 9.
The device is provided with 2 shaftless screw conveyors 1,4 tar ammonia water clarifying machines and scrapes slag tank 8 in pairwise symmetrical distribution, slag outlets of the left 2 tar ammonia water clarifying machines and scrapes slag tank 8 are respectively connected with 2 feed inlets at the top of the left shaftless screw conveyor 1 through phi 159 pipelines in a sealing manner, slag outlets of the right 2 tar ammonia water clarifying machines and scrapes slag tank 8 are respectively connected with two feed inlets at the top of the right shaftless screw conveyor 1 through phi 159 pipelines in a sealing manner, discharge outlets of the left shaftless screw conveyor 1 and the right shaftless screw conveyor 1 are respectively connected with feed inlets at the top of the temporary slag tank 2 through phi 159 pipelines in a sealing manner, and materials are uniformly collected into the temporary slag tank 2 through the discharge outlets of the shaftless screw conveyor 1.
The outside of the temporary slag storage groove 2 is spirally distributed with the hot water pipes 21 for heating. The discharge hole at the lower part of the slag storage tank is arranged in a phi 450 pipeline, is connected with a 450 full-sealed electro-hydraulic gate valve 22, and is connected with a stainless steel expansion joint 23 below the gate valve to counteract thermal deformation.
The diameter of the pipeline with diameter being phi 219 below the expansion joint 23 enters the plunger pump system 9, the plunger pump system 9 adopts ASBN-7 type plunger pump system with secondary structure, and the plunger pump system 9 can pump out viscous liquid of semi-liquid such as tar residue stably, and lift and convey the tar residue. The main pipeline of the outlet of the plunger pump system 9 is phi 70 steel pipe, a branch pipeline is arranged, and the branch pipeline is phi 70 steel pipe.
The electric ball valves 101 are arranged on the main pipeline and the branch pipeline at the outlet of the plunger pump system 9, when the incoming material is tar slag, the electric ball valves 101 on the main pipeline are opened, the electric ball valves 101 on the branch pipeline are closed, the tar slag passes through, when the incoming material is water or more water is accumulated in the temporary slag storage tank 2, the electric ball valves 101 on the main pipeline are closed, the electric ball valves 101 on the branch pipeline are opened, and the accumulated water is pumped back into the tar ammonia water clarifying mechanical slag scraping tank 8 by the plunger pump system 9 through the branch pipeline.
The tar residue moving storage hopper 4 includes a frame 41, a hopper body 42, a weight lever 43, and a seal cover 44. The frame 41 bottom is equipped with six column feet 46 and supports the storage hopper, has six 45 degrees reverse square conical groove 51 on the AGV dolly 5 frame, and the bottom of square conical groove 51 is column foot 46 size +1mm's tolerance, can be when tar residue removes storage hopper 4 and puts down on the AGV dolly 5 frame, and automatic centering need not to use various detecting instrument to confirm whether the storage hopper is reset.
The bucket body 42 is fixedly connected in the frame 41, and the side surface of the bucket body 42 is semi-spiral, so that tar residues can be conveniently poured out. Two side surfaces of the frame 41 are respectively provided with a slot 45, and the tar residue moving storage hopper 4 is fixed when being dumped.
The right angle side of the outer side of the tar residue moving storage hopper frame 41 is provided with a rotating shaft 47, one end of the rotating shaft 47 is fixed with a tar residue moving storage hopper sealing cover 44, and the other end of the rotating shaft is fixed with a counterweight lever 43. So that the sealing cover 44 can be fully opened as the tar residue moving storage hopper 4 is poured.
The electric gate valve 441 is installed on the coke-oil residue movable storage hopper sealing cover 44, and the electric gate valve 441 is opened to expose a hole large enough to ensure the discharge of the coke-oil residue and the collection of waste gas and the negative pressure discharge. A water seal groove 442 is arranged above the electric gate valve 441 on the seal cover of the tar residue movable storage hopper. The rubber sealing ring is adhered to the part of the lower periphery of the tar residue moving storage hopper sealing cover 44, which is intersected with the storage hopper body, so that the storage hopper is tightly sealed. A thunder level gauge is mounted on the sealing cover 44 of the tar residue movable storage hopper for measuring the tar residue storage quantity in the tar residue movable storage hopper, and after the tar residue storage quantity reaches the level requirement, the tar residue is stopped to be fed.
The charge sealing device 3 comprises a sealing cap 31, a metal hose 32, an exhaust pipe 33 and a first hydraulic cylinder 34. The sealing cover 31 is fixedly connected to the push rod of the first hydraulic cylinder 34, the top of the sealing cover 31 is provided with an inverted funnel-shaped closing opening, the bottom of the sealing cover is provided with a horizontal annular knife beam, one end of a metal hose 32 is connected with the main pipeline of the outlet of the plunger pump system 9, the other end of the metal hose extends into the sealing cover 31 from the closing opening of the sealing cover, the exhaust pipe 33 is made of the metal hose, one end of the exhaust pipe extends into the closing opening, and the other end of the exhaust pipe is connected with the negative pressure exhaust pipeline 11. The horizontal annular knife beam is inserted into the water seal groove 442 to play a sealing role.
The front of the frame of the AGV trolley 5 is made into a planar collision head 52, the two sides of the width of 1 meter are inclined angles of +/-60 degrees, a guide frame and a positioning clamping groove are arranged on the ground of a target area, and the parking accuracy of the AGV trolley can be ensured to be not more than 10 mm. Thus, the parking precision of the AGV trolley is guaranteed, and the cost investment of remote control equipment for various measurements of positioning precision is reduced.
The AGV carriage 5 is equipped with an electromagnetic automatic guide device, and can travel along a predetermined guide path, and is a transport vehicle having safety protection and various transfer functions. Three AGVs and control computer (control cabinet), navigation equipment, battery charging outfit and peripheral appurtenance constitute AGV system, under control computer's control and task scheduling, AGV dolly 5 can be accurate walk according to the prescribed route, after reaching the task assigned position, accomplish a series of operation tasks, and control computer can decide whether to charge the district according to AGV self electric quantity and carry out automatic charging.
The AGV trolley 5 adopts two rear wheels to independently drive differential steering, and the two front wheels are four-wheel structural forms of universal wheels. The stepping motor provides driving force through the driving wheel after passing through the speed reducer, and differential steering can be realized when the movement speeds of the two wheels are different.
① The AGV 5 comprises chassis, frame, shell, control room and corresponding mechanical and electrical structure such as reduction box, integrated closed-loop stepping motor, wheels, etc., which is the basic part of AGV 5. Has the structural characteristics of the electric vehicle and the special requirements of unmanned automatic operation. The frame is formed by welding steel members, and the lower the gravity center is, the more favorable the anti-tipping effect is. The panel is provided with a transfer device, an electric control system, keys, a display screen and the like.
② The frame is the body part of the whole AGV trolley 5 and is mainly used for installing wheels, a light sensor, a servo motor and a speed reducer. A servo motor driver, a PCD plate and a battery jar are arranged on the frame. The design of the frame is made of cast aluminum alloy with the brand of 6061, and the frame has enough strength and hardness, lighter weight and good weldability.
③ The wheels are solid rubber tires. Two driving wheels at the back of the vehicle body are fixed driving wheels which are connected with a hub type motor. The front two follower wheels are rotary follower wheels, and play a role in supporting and balancing the trolley.
④ In order to avoid collision of an AGV trolley when a system fails or a person passes through a working route of the AGV trolley, the AGV trolley is generally provided with devices such as obstacle detection, collision avoidance, alarm, warning, emergency stop and the like. In addition, there are auxiliary devices such as automatic charging.
⑤ The control console adopts a common PC, receives the AGV trolley 5 conveying task issued by the main control computer through a computer network, and acquires the state information of each AGV trolley 5 in real time through a wireless communication system. And transmitting a dispatching command to the selected AGV 5 according to the demand condition and the current running condition of each AGV. After the AGV 5 completes one transport task, it waits for the next task at the standby station. In order to accelerate wireless communication between the control console and the AGV trolley 5 and scheduling of the AGV trolley 5 based on the wireless communication, a multithreading mode is adopted in programming, so that all functional modules such as communication and scheduling are not affected, and the system speed is accelerated.
⑥ The communication system receives the command of the monitoring system, timely and accurately transmits the command to other corresponding subsystems to complete the appointed action of the monitoring system, and receives the feedback information of the subsystems and returns the feedback information to the monitoring system as the basis of coordination, management and control of the monitoring system.
⑦ The function of the AGV navigation system is to ensure that the AGV trolley 5 travels along the correct path and to ensure a certain travel accuracy. The AGV trolley adopts a fixed route guiding mode of an electromagnetic guiding mode.
⑧ The AGV 5 uses a battery as the only power source for use. For driving the vehicle body, on-board accessories such as control, communication, safety, etc.
The discharging device 6 comprises a turnover body, a rack 61 and a second hydraulic cylinder 62, wherein an inserting strip 63 is arranged at one end of the turnover body, a semicircular gear 64 is arranged at the other end of the turnover body, the turnover body is hinged on the receiving hopper 7, the semicircular gear 64 is meshed with the rack 61, the rack 61 is fixedly connected to a push rod of the second hydraulic cylinder 62, and a base of the second hydraulic cylinder 62 is fixedly connected to the receiving hopper 7. The extension and retraction of the rack 61 are driven by the second hydraulic cylinder 62, the rack 61 stretches out to drive the semicircular gear 64 to rotate, the tar residue moving storage hopper 4 is driven by the cutting 63 to rotate by taking the gear 64 as a circle center, the storage hopper naturally overturns, the sealing cover 44 of the storage hopper is driven by the counterweight lever 43 to be opened, and tar residue in the storage hopper is completely dumped into the receiving hopper 7.
The tar residue collecting, loading, transporting and unloading process specifically comprises the following steps:
1) The tar slag is discharged through a slag discharge port of a tar and ammonia water clarifying mechanical slag scraping groove 9, enters the shaftless screw conveyor 1 from a feeding port of the shaftless screw conveyor 1, is conveyed and collected by the shaftless screw conveyor 1, and is uniformly discharged into the temporary slag storage groove 2 from a discharge port of the shaftless screw conveyor 1.
2) The tar residue movable storage hopper 4 is placed on the AGV trolley 5, the AGV trolley 5 drives to be right below the charging sealing device 3, the electric gate valve 441 of the sealing cover 44 of the tar residue movable storage hopper 4 is opened, and the charging sealing device first hydraulic cylinder 34 pushes the horizontal annular knife beam to move downwards to be inserted into the water sealing groove 442, so that sealing is realized;
3) The tar residue in the temporary residue storage tank 2 is pumped into a metal hose 32 of the charging sealing device 3 through the plunger pump system 9 by a main pipeline at the outlet of the plunger pump system 9, and is injected into the tar residue movable storage hopper 4 through the metal hose 32;
4) The electric gate valve 441 of the sealing cover 44 is closed, and the first hydraulic cylinder 34 of the charging sealing device drives the horizontal annular knife beam to move upwards and leave the water seal groove 442;
5) If the accumulated water in the temporary slag storage tank exceeds a set value, closing the electric ball valve 101 of the main pipeline at the outlet of the plunger pump system 9, opening the electric ball valve 101 of the branch pipeline, and pumping the accumulated water into the tar and ammonia water clarifying mechanical slag scraping tank 9 through the plunger pump system 9;
6) AGV dolly 5 carries tar residue and removes storage hopper 4 and drive to receive hopper 7 department, inserts discharge apparatus 6 cutting 63 in tar residue removes storage hopper 4 both sides slot 45, and discharge apparatus second pneumatic cylinder 62 drives tar residue and removes storage hopper 4 upset, and the sealed lid 44 of storage hopper is driven by counter weight lever 43 and is opened, and tar residue in the tar residue removes storage hopper 4 is poured into in receiving hopper 7, is convenient for further utilization of tar residue.
The invention realizes the full sealing and innocuity of the processes of collecting, loading, transporting and unloading the tar slag, and realizes the mechanization and automation of collecting, loading, transporting and unloading the tar slag.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.