CN116238883A

CN116238883A - Oily sludge feeding system and control method

Info

Publication number: CN116238883A
Application number: CN202310435269.1A
Authority: CN
Inventors: 杨闽; 江浩; 杨静豪
Original assignee: China Erzhong Group Deyang Heavy Industries Co Ltd
Current assignee: China Erzhong Group Deyang Heavy Industries Co Ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-06-09

Abstract

The invention discloses an oily sludge feeding system and a control method, comprising a feeding device and a control system; the feeding device comprises a dry material hopper, the dry material hopper is arranged above the input end of the weighing and conveying device, the output end of the weighing and conveying device extends to the upper part of a dry material vibrating screen, the dry material vibrating screen is arranged above the input end of a belt conveyor, the output end of the belt conveyor extends to the upper part of the dry material hopper, the thin material vibrating hopper and the dry material hopper are both arranged above a first-stage feeding conveyor, the output end of the first-stage feeding conveyor is arranged above the input end of a second-stage feeding conveyor, the output end of the second-stage feeding conveyor is arranged above a third-stage feeding box, and the third-stage feeding box is connected with a material processor through a third-stage feeding conveyor; the control system comprises a PLC control cabinet, a field controller and a remote controller, wherein the PLC control cabinet controls all motors of the oil-containing sludge feeding system through the remote controller or the field controller.

Description

Oily sludge feeding system and control method

Technical Field

The invention relates to the technical field of oil and gas field environmental protection, in particular to an oil-containing sludge feeding system and a control method.

Background

The oil-containing sludge in oil field refers to the mixture of oil, water and soil formed by mixing the oil and the water with the soil in the process of exploring, exploiting, gathering and transporting petroleum and natural gas (including shale gas and shale oil), and the oil-based rock debris generated by using the oil-based mud in the drilling process. Depending on the liquid content, the oily sludge may be classified into a dry material and a thin material.

At present, a feeding device for oily sludge only has a conveying function, an existing feeding system can only independently convey dry materials or thin materials, the function of simultaneously conveying the dry materials and the thin materials is lacked, a start-stop device of the feeding device is still in simple mechanical operation, the devices are mutually independent, the degree of automation is low, and remote monitoring and operation and maintenance cannot be performed.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a feeding system cannot simultaneously convey dry materials and thin materials and has low automation degree, and provides an oil-containing sludge feeding system and a control method.

In order to achieve the above object, the present invention provides the following technical solutions:

an oily sludge feeding system comprises a feeding device and a control system;

the feeding device comprises a dry material hopper, a thin material vibrating screen, a weighing and conveying device, a dry material vibrating screen, a belt conveyor, a dry material hopper, a primary feeding conveyor, a secondary feeding conveyor, a tertiary feeding box and a tertiary feeding conveyor, wherein the dry material hopper is arranged above the input end of the weighing and conveying device, the output end of the weighing and conveying device extends to above the dry material vibrating screen, the dry material vibrating screen is arranged above the input end of the belt conveyor, the output end of the belt conveyor extends to above the dry material hopper, the thin material vibrating hopper and the discharge opening of the dry material hopper are arranged above the primary feeding conveyor, the output end of the primary feeding conveyor is arranged above the input end of the secondary feeding conveyor, the output end of the secondary feeding conveyor is arranged above the tertiary feeding box, and the tertiary feeding box is connected with a material processor through the tertiary feeding conveyor;

the control system comprises a PLC control cabinet, a site controller and a remote controller, wherein the PLC control cabinet controls all motors of the oil-containing sludge feeding system through the remote controller or the site controller, linkage relations exist among the motors, when an automatic mode is started, the motors are mutually linked, when a manual mode is started, the motors are mutually linked and closed, and all motors are mutually independent.

In the invention, a thin material vibration hopper and a dry material hopper are both arranged above a first-stage feeding conveyor, thin materials reach the first-stage feeding conveyor through the thin material vibration hopper, dry materials reach the first-stage feeding conveyor through the dry material hopper, a weighing conveying device, a dry material vibration screen, a belt conveyor and the dry material hopper, and oily sludge reaching the first-stage feeding conveyor is conveyed to a processor through a second-stage feeding conveyor, a third-stage feeding box and a third-stage feeding conveyor in sequence, so that the function that the same feeding system can simultaneously convey dry materials and thin materials is realized; furthermore, the invention controls all motors in the feeding system through the control system, and the motors can be mutually interlocked/unlocked through the control system, so that the feeding system meets the requirements of different modes, the technical effects of automatically and manually controlling the starting and stopping of related devices of the feeding system are achieved, meanwhile, the remote monitoring and operation and maintenance can be realized, the working efficiency is improved, and the labor intensity of workers is reduced.

Preferably, the secondary feed conveyor is provided with an inert gas inlet pipe and an inert gas outlet pipe, the inert gas outlet pipe is provided with a one-way valve, and inert gas is introduced into the secondary feed conveyor when the secondary feed conveyor operates. In the material treatment process, the temperature can reach more than 300 ℃, if oxygen carried by the material and the inside of a conveyor is not removed in time at high temperature, explosion can be caused, the production safety is influenced, and the safety can be improved by introducing inert gas to bring out the oxygen in the device.

Preferably, the periphery of the three-stage feeding box and the three-stage feeding conveyor are provided with heaters, the heaters are used for preheating materials entering the three-stage feeding box and preventing the materials from being cooled, and the three-stage feeding box, the three-stage feeding conveyor and the heater are wrapped with heat-insulating cotton. The material is preheated through setting up the heater to prevent the material cooling, can improve the heating rate of material, and then improve the processing rate of material, through setting up heat preservation cotton, can effectively prevent the heat and give off.

Preferably, a temperature sensor is arranged on the shell of the three-stage feeding conveyor, and the temperature sensor is used for detecting the temperature of materials. By setting the temperature sensor, when the temperature of the material is higher than the upper limit of the set temperature value, the heater stops heating and properly accelerates the conveying speed of the three-stage feeding conveyor, and when the temperature of the material is lower than the lower limit of the set temperature value, the heater stops heating and properly slows down the conveying speed of the three-stage feeding conveyor.

Preferably, the anti-adhesion lining plates are arranged on the inner side walls of the thin material vibration hopper, the dry material hopper and the three-stage feeding box, and the bin wall vibration exciter is arranged on the outer side walls of the thin material vibration hopper, the dry material hopper and the three-stage feeding box. Through the installation antiseized interior welt can prevent oily mud bonding and hardening, through the periodic duty of storehouse wall vibration exciter, can prevent that the material from falling unsmoothly, avoid the material to bond on the inboard wall.

Preferably, the anti-adhesion inner liner plate is a polyurethane plate.

Preferably, the weighing and conveying device is internally provided with a weighing module, and the weighing module can automatically calculate the weighing weight according to the speed, the flow and the weight of conveyed materials and feed data back to a remote controller. Through at the built-in weighing module of conveyor that weighs, adopt weighing sensor measurement control to realize quantitative transmission and whole line control, through feeding back various data to remote controller in, can statistics material handling capacity in real time, improve the degree of automation of system.

Preferably, an automatic valve is arranged at the discharging opening of the dry material hopper, and the PLC control cabinet can control the opening/closing of the automatic valve. By arranging the automatic valve at the discharging opening of the dry material hopper, the discharging state of the dry material hopper can be controlled, so that the technical effect of transporting only thin materials/dry materials or transporting the dry materials and the thin materials simultaneously is further realized.

Preferably, a level gauge is installed in the three-level feeding box, and the level gauge can measure the height of materials in the three-level feeding box and feed data back to a remote controller. The material level meter is arranged in the three-level feeding box and connected with the remote controller, so that the material quantity in the three-level feeding box can be monitored in real time, and the blanking quantity is controlled.

Preferably, the belt conveyor motor, the dry material vibrating screen motor, the weighing and conveying device motor and the thin material vibrating hopper motor can be all interlocked with the primary feeding conveyor motor.

The control method of the oil-containing sludge feeding system comprises the oil-containing sludge feeding system;

before conveying materials, detecting the liquid content of the materials, enabling dry materials to enter the dry material hopper after passing through the crushing and screening hopper, and enabling thin materials to enter the thin material vibration hopper through the grab bucket;

when materials are conveyed, the remote controller is switched to a remote control mode and an automatic mode, the three-stage feeding conveyor continuously works, and the material level meter detects the height of the materials in the three-stage feeding box and feeds the material back to the remote controller; when the material height is lower than the lowest lower limit, the primary feeding conveyor and the secondary feeding conveyor are automatically started to convey dry materials/thin materials or simultaneously; when the material height is higher than the highest upper limit, the primary feeding conveyor and the secondary feeding conveyor are automatically closed, and a bin wall vibration exciter of the three-stage feeding box periodically works;

when maintenance is detected, the remote controller is switched to a local control mode and a manual mode, the motors are independent of each other, and maintenance personnel can open or close related equipment on site.

Preferably, the dry materials include a general dry material and an extra dry material, the thin materials include a general thin material and an extra thin material, the general dry material and the general thin material can be separately conveyed, and the extra dry material and the extra thin material are simultaneously conveyed and stirred by the primary feeding conveyor and the secondary feeding conveyor. When the material is extra-dry material, the blocking of the conveyor is easy to cause, so that the structure of the conveyor is deformed; when the material is an ultra-thin material, the energy consumption is overlarge.

Preferably, when dry materials are conveyed, the belt conveyor motor, the dry material vibrating screen motor and the weighing and conveying device motor are all interlocked with the primary feeding conveyor motor and the secondary feeding conveyor motor; when thin materials are conveyed, the thin material vibration hopper is interlocked with the first-stage feeding conveyor motor and the second-stage feeding conveyor motor, and when dry materials and thin materials are conveyed, the belt conveyor motor, the dry material vibration screen motor, the weighing conveying device motor and the thin material vibration hopper motor are interlocked with the first-stage feeding conveyor motor and the second-stage feeding conveyor motor.

Preferably, when the thin materials are conveyed, the automatic valve of the blanking opening of the dry material hopper is closed, and when the dry materials or the dry materials and the thin materials are conveyed simultaneously, the automatic valve of the blanking opening of the dry material hopper is opened.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, a thin material vibration hopper and a dry material hopper are both arranged above a first-stage feeding conveyor, thin materials reach the first-stage feeding conveyor through the thin material vibration hopper, dry materials reach the first-stage feeding conveyor through the dry material hopper, a weighing conveying device, a dry material vibration screen, a belt conveyor and the dry material hopper, and oily sludge reaching the first-stage feeding conveyor is conveyed to a processor through a second-stage feeding conveyor, a third-stage feeding box and a third-stage feeding conveyor in sequence, so that the function that the same feeding system can simultaneously convey dry materials and thin materials is realized; furthermore, the invention controls all motors in the feeding system through the control system, and the motors can be mutually interlocked/unlocked through the control system, so that the feeding system meets the requirements of different modes, the technical effects of automatically and manually controlling the starting and stopping of related devices of the feeding system are achieved, meanwhile, the remote monitoring and operation and maintenance can be realized, the working efficiency is improved, and the labor intensity of workers is reduced.

2. According to the invention, the inert gas inlet pipe and the inert gas outlet pipe are arranged, the inert gas outlet pipe is provided with the one-way valve, when the secondary feeding conveyor operates, inert gas is introduced into the secondary feeding conveyor, and oxygen in the inert gas carrying device is introduced, so that explosion is prevented, and the production safety is improved.

3. According to the invention, the heaters and the heat preservation cotton are arranged on the periphery of the three-stage feeding box and the three-stage feeding conveyor, the heaters are used for preheating materials entering the three-stage feeding box and preventing the materials from being cooled, the heaters are arranged for preheating the materials and preventing the materials from being cooled, the heating speed of the materials is improved, the processing speed of the materials is further improved, and the heat dissipation can be effectively prevented by arranging the heat preservation cotton.

4. According to the invention, the weighing module is arranged in the weighing and conveying device, and the weighing sensor is adopted for metering control, so that quantitative transmission and whole line control are realized, and various data are fed back to the remote controller, so that the material processing amount can be counted in real time, and the degree of automation of the system is improved.

5. According to the invention, the anti-adhesion inner lining plates are respectively arranged on the thin material vibration hopper, the dry material hopper and the inner side wall of the three-stage feeding box, so that the materials can be effectively prevented from being adhered and hardened.

Description of the drawings:

fig. 1 is a plan view of an oily sludge feed system in accordance with the present invention.

Fig. 2 is an assembly view of the dry feed system.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a motor control diagram during dry material delivery.

Fig. 5 is a motor control diagram during thin material conveying.

Fig. 6 is a motor control diagram for simultaneous dry and thin feed delivery.

FIG. 7 is a feedback diagram of the level signal.

Fig. 8 is a control diagram of the motor of the equipment bin wall vibration exciter.

Fig. 9 is a schematic structural view of a thin material vibration hopper.

Fig. 10 is a schematic structural view of a dry material hopper.

Fig. 11 is a schematic structural view of the weighing conveyer.

Fig. 12 is a schematic view of the structure of a dry material vibrating screen.

Fig. 13 is a schematic structural view of the belt conveyor.

Fig. 14 is a schematic diagram of the structure of the dry hopper, the primary feed conveyor, and the secondary feed conveyor.

FIG. 15 is a schematic diagram of the structure of a three stage feed box and a three stage feed conveyor.

Fig. 16 is a schematic diagram of the operation of the present invention.

The marks in the figure: 1-a dry material hopper; 2-a weighing and conveying device; 3-a dry material vibrating screen; 4-a belt conveyor; 5-a dry material hopper; 6-a primary feed conveyor; 7-three-stage feeding boxes; 8-three-stage feed conveyor; 9-vibrating the thin material hopper; 10-level gauge; 11-a secondary feed conveyor; 12-an inert gas inlet pipe; 13-an inert gas outlet pipe; 14-a heater; 15-heat preservation cotton.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.

Example 1

An oily sludge feeding system, as shown in figures 1-3, comprises a feeding device and a control system;

the feeding device comprises a dry material hopper 1, a thin material vibrating hopper 9, a weighing and conveying device 2, a dry material vibrating screen 3, a belt conveyor 4, a dry material hopper 5, a primary feeding conveyor 6, a secondary feeding conveyor 11, a tertiary feeding box 7 and a tertiary feeding conveyor 8, wherein the dry material hopper 1 is arranged above the input end of the weighing and conveying device 2, the output end of the weighing and conveying device 2 extends above the dry material vibrating screen 3, the dry material vibrating screen 3 is arranged above the input end of the belt conveyor 4, the output end of the belt conveyor 4 extends above the dry material hopper 5, the discharge openings of the thin material vibrating hopper 9 and the dry material hopper 5 are all arranged above the primary feeding conveyor 6, the output end of the primary feeding conveyor 6 is arranged above the input end of the secondary feeding conveyor 11, the output end of the secondary feeding conveyor 11 is arranged above the tertiary feeding box 7, and the tertiary feeding box 7 is connected with a material processor through the tertiary feeding conveyor 8 as shown in a figure 15;

in order to improve the production safety, the secondary feeding conveyor 11 is provided with an inert gas inlet pipe 12 and an inert gas outlet pipe 13, preferably, the inert gas inlet pipe 12 is arranged at the connecting section of the secondary feeding conveyor 11 and the tertiary feeding box 7, the inert gas outlet pipe 13 is arranged at one end of the secondary feeding conveyor 11 close to the primary feeding conveyor 6, the inert gas outlet pipe 13 is provided with a one-way valve, and inert gas such as nitrogen is introduced into the secondary feeding conveyor 11 when the secondary feeding conveyor 11 operates. The principle is that in the material treatment process, the temperature can reach more than 300 ℃, if oxygen carried by the material and the inside of a conveyor is not removed in time at high temperature, explosion can be caused, the production safety is influenced, and the technical effect of improving the production safety is achieved by introducing inert gas to bring out the oxygen in the inside of the device. Further, in order to prevent pyrolysis gases in the processor from escaping through the tertiary feed conveyor 8, a certain level of material is maintained in the tertiary feed box 7.

Further, heaters 14 are arranged around the three-stage feeding box 7 and the three-stage feeding conveyor 8, the heaters 14 are used for preheating materials entering the three-stage feeding box 7 and preventing the materials from being cooled, the temperature of the materials is maintained to be about 100 ℃, the heaters 14 can adopt steam heating, electric heating or other heating modes, and the three-stage feeding box 7, the three-stage feeding conveyor 8 and the heaters 14 are all wrapped with heat-insulating cotton 15. The heater 14 is arranged to preheat materials and prevent the materials from being cooled, so that the heating speed of the materials can be increased, the processing speed of the materials is further increased, and the heat dissipation can be effectively prevented by arranging the heat-insulating cotton 15. A temperature sensor is arranged on the shell of the three-stage feeding conveyor 8 and is used for detecting the temperature of materials. By providing a temperature sensor, the heater 14 stops heating and appropriately accelerates the speed of the tertiary feed conveyor 8 when the material temperature is above the upper limit of the set temperature value, and the heater 14 stops heating and appropriately slows down the speed of the tertiary feed conveyor 8 when the material temperature is below the lower limit of the set temperature value.

The thin material vibration hopper 9 and the dry material hopper 5 are both arranged above the first-stage feeding conveyor 6, thin material passes through the thin material vibration hopper 9 to reach the first-stage feeding conveyor 6, dry material passes through the dry material hopper 1, the weighing conveying device 2, the dry material vibration screen 3, the belt conveyor 5 and the dry material hopper 5 to reach the first-stage feeding conveyor 6, and oily sludge reaching the first-stage feeding conveyor 6 sequentially passes through the second-stage feeding conveyor 11, the third-stage feeding box 7 and the third-stage feeding conveyor 8 to be conveyed to a processor. The dry material hopper 1 is fed with the material to realize the function of only conveying dry materials, the thin material vibrating hopper 9 is fed with the material to realize the function of only conveying thin materials, and the dry material hopper 1 and the thin material vibrating hopper 9 are fed with the material to realize the function of simultaneously conveying dry materials and thin materials.

Further, as shown in fig. 14, the blanking opening of the dry material funnel 5 is provided with an automatic valve, whether the dry material falls to the primary feeding conveyor 6 can be controlled by opening and closing the automatic valve, the blanking state of the dry material can be controlled more timely and accurately by arranging the automatic valve, the automation degree of the system is improved, and in order to prevent the material in the dry material funnel 5 from overflowing, a baffle is arranged on the periphery of the dry material funnel 5.

In order to prevent oily sludge from bonding and hardening, cause the jam, influence the device use thinner vibration hopper 9 the drier hopper 1 all install on the inboard wall of tertiary feeding case 7 and prevent bonding interior welt, optionally, interior welt is the polyurethane board, further, thinner vibration hopper 9 drier hopper 1 all install the bin wall vibration exciter on the tertiary feeding case 7 lateral wall, through the periodic operation of bin wall vibration exciter, can further prevent that the material whereabouts is unsmooth, avoid the material bonding on the inboard wall.

Further, the primary feeding conveyor 6, the secondary feeding conveyor 11 and the tertiary feeding conveyor 8 all have the capability of conveying dry materials and thin materials at the same time, and can be provided with a shaft spiral structure, a discharge hole of the primary feeding conveyor 6 is connected with the tertiary feeding box 7 in a flange mode, and when the conveying distance is longer, two sections of the primary feeding conveyor 6 can be considered to be adopted for segmented conveying.

Specifically, as shown in fig. 9, the thin material vibration hopper 9 includes a bin wall vibration exciter, a vibration screen, a thin material hopper, a lining plate, a support, a ladder, a railing and the like, the thin material hopper is open and is installed below the vibration screen, the thin material hopper and the support are in an integrated structure, and are in an irregular upper large-lower small shape, the thin material hopper is combined with a screw machine shell of the thin material hopper through a bottom rectangular flange, a straight ladder and the railing are arranged on the periphery of the support so as to facilitate observation and protection, and preferably, the height of the support is adjustable.

Specifically, as shown in fig. 10, the dry material hopper 1 includes a bin wall vibration exciter, a lining plate, a support, a ladder and the like, a straight ladder is arranged on the periphery of the support so as to facilitate observation, the height of the support is adjustable, and a discharging opening of the dry material hopper 1 is processed into an arc shape so as to accelerate the discharging speed.

Specifically, as shown in fig. 11, the weighing and conveying device 2 includes a conveying belt, a driving device, a redirecting roller, a horizontal carrier roller, a tensioning roller device, a machine body, a motor, a control box and the like.

Specifically, as shown in fig. 12, the dry material vibrating screen 3 is a bar type vibrating screen, and is composed of a vibrating screen box, a vibration exciter, a spring, a support and the like, the support can be used for adjusting the height and can be provided with a material screening function, the screening machine and the screen mesh are obliquely arranged, the screened material can quickly slide down to the ground, and a baffle is arranged at the edge of the screen mesh and can effectively prevent the material from escaping from the vibrating screen.

Specifically, as shown in fig. 13, the belt conveyor 5 mainly comprises a conveying belt, a driving device, a redirecting roller, a groove-shaped carrier roller, a tensioning roller device, a machine body, a motor, a control box and the like, and the conveying belt is arranged in a herringbone shape, so that materials can be effectively prevented from sliding down.

The control system comprises a PLC control cabinet, a field controller and a remote controller, wherein the field controller is placed near feeding system equipment and is in explosion-proof design, the PLC control cabinet and the remote controller are placed in a control room at a position far away from the feeding system equipment, and the remote controller can receive remote operation and maintenance in different places. The PLC control cabinet controls all motors of the oil-containing sludge feeding system through the remote controller or the site controller, linkage relations exist among the motors, when an automatic mode is started, the motors are mutually linked, when a manual mode is started, the motors are mutually linked and closed, and all the motors are independent. All motors in the feeding system are controlled by the control system, and the motors can be mutually interlocked/unlocked by the control system, so that the feeding system meets the requirements of different modes, the technical effects of starting and stopping related devices of the automatic and manual feeding system are achieved, meanwhile, the remote monitoring and operation and maintenance can be realized, the working efficiency is improved, and the labor intensity of workers is reduced.

Further, as shown in fig. 7, a level meter 10 is installed in the three-stage feeding box 7, and the level meter 10 can measure the height of the materials in the three-stage feeding box 7 and feed data back to a remote controller, so that the material quantity in the three-stage feeding box 7 is monitored in real time, and the blanking is controlled.

The motor of the belt conveyor 4, the motor of the dry material vibrating screen 3, the motor of the weighing and conveying device 2 and the motor of the thin material vibrating hopper 9 can be interlocked with the motor of the primary feeding conveyor 6.

Example 2

According to the embodiment, the weighing module is added on the basis of the embodiment 1, the weighing module is arranged inside the weighing and conveying device 2, the weighing module adopts weighing sensor metering control to perform quantitative transmission and whole line control, and the weighing module can automatically calculate the weighing weight according to the speed, the flow, the weight and the like of conveyed materials and feed data back to the remote controller, so that the technical effects of counting the material throughput in real time and improving the automation degree of the system are achieved.

Example 3

The control method of the oil-containing sludge feeding system comprises the following steps:

as shown in fig. 16, before conveying the material, the material is detected by a solid phase content detector, when the liquid content is below 10%, the material is a super-dry material, when the liquid content is between 10 and 40%, the material is a general dry material, when the liquid content is between 40 and 70%, the material is a general thin material, when the liquid content is above 70%, the general thin material enters the dry material hopper 1 after passing through the crushing and screening hopper, the general thin material enters the thin material vibration hopper 9 through the grab hopper, the super-dry material and the super-thin material are conveyed simultaneously, and after being stirred in the primary feeding conveyor 6 and the secondary feeding conveyor 11, the material enters the three-stage feeding box 7, and when the material is the super-dry material, the conveyor is blocked easily, so that the structure of the conveyor is deformed; when the material is the extra-thin material, the energy consumption is excessive, so that the extra-dry material and the extra-thin material are simultaneously conveyed and stirred by the primary feeding conveyor 6 and the secondary feeding conveyor 11, and the problems can be effectively solved.

When general dry materials are conveyed, as shown in fig. 4, the motor of the belt conveyor 4, the motor of the dry material vibrating screen 3 and the motor of the weighing and conveying device 2 are all interlocked with the motor of the primary feeding conveyor 6 and the motor of the secondary feeding conveyor 11. The primary feeding conveyor 6 and the secondary feeding conveyor 11 are started, and the motors of the belt conveyor 4, the motor of the dry material vibrating screen 3 and the motor of the weighing and conveying device 2 are all started; the primary feeding conveyor 6 and the secondary feeding conveyor 11 are closed, and the motor of the belt conveyor 4, the motor of the dry material vibrating screen 3 and the motor of the weighing and conveying device 2 are all closed.

In operation, the remote controller is switched to a remote control mode and an automatic mode, the thin material vibration hopper 9 is closed, the three-stage feeding conveyor 8 continuously works, and the material level meter 10 detects the height of the material in the three-stage feeding box 7 and feeds back to the remote controller, as shown in fig. 7; when the material height is lower than the lowest lower limit, the primary feeding conveyor 6 and the secondary feeding conveyor 11 are automatically started, and due to the linkage relationship, the motors of the belt conveyor 4, the motor of the dry material vibrating screen 3 and the motor of the weighing and conveying device 2 are all started, and the automatic valve of the dry material hopper 5 is opened to convey dry materials to the three-stage feeding box 7; when the material height is higher than the highest upper limit, the first-stage feeding conveyor 6 and the second-stage feeding conveyor 11 are automatically closed, and due to the linkage relationship, the motors of the belt conveyor 4, the motor of the dry material vibrating screen 3 and the motor of the weighing and conveying device 2 are all closed, the automatic valve of the dry material hopper 5 is closed, and the bin wall vibration exciter of the dry material hopper 1 and the third-stage feeding box 7 work periodically.

When general thin materials are conveyed, as shown in fig. 5, the motor of the thin material vibration hopper 9 is interlocked with the motors of the primary feeding conveyor 6 and the secondary feeding conveyor 11. The primary feeding conveyor 6 and the secondary feeding conveyor 11 are started, and the thin material vibration hopper 9 is started; the primary feeding conveyor 6 and the secondary feeding conveyor 11 are closed, and the thin material vibration material shaking 9 is closed.

During operation, the remote controller is switched to a remote control mode and an automatic mode, the automatic valve of the dry material hopper 5, the belt conveyor 4, the dry material vibrating screen 3, the weighing and conveying device 2 and the dry material hopper 1 are closed, the three-stage feeding conveyor 8 continuously works, and the material level meter 10 detects the height of the materials in the three-stage feeding box 7 and feeds the material back to the remote controller; when the material height is lower than the lowest lower limit, the primary feeding conveyor 6 and the secondary feeding conveyor 11 are automatically started, and due to the linkage relationship, the thin material vibration hopper 9 is also started to convey thin materials to the three-stage feeding box 7; when the material height is higher than the highest upper limit, the primary feeding conveyor 6 and the secondary feeding conveyor 11 are automatically closed, the thin material vibration hopper 9 is also closed due to the linkage relation, and the thin material vibration hopper 9 and the bin wall vibration exciter of the three-stage feeding box 7 work periodically.

When dry materials and thin materials are conveyed simultaneously, as shown in fig. 6, the motor of the belt conveyor 4, the motor of the dry material vibrating screen 3, the motor of the weighing conveying device 2 and the motor of the thin material vibrating hopper 9 are all interlocked with the motor of the primary feeding conveyor 6 and the motor of the secondary feeding conveyor 11. The primary feeding conveyor 6 is started, and the belt conveyor 4, the dry material vibrating screen 3, the weighing conveying device 2 and the thin material vibrating hopper 9 are all started; the primary feeding conveyor 6 and the secondary feeding conveyor 11 are closed, and the belt conveyor 4, the dry material vibrating screen 3, the weighing and conveying device 2 and the thin material vibrating hopper 9 are all closed.

During operation, the remote controller is firstly switched to a remote control mode and an automatic mode, the three-stage feeding conveyor 8 continuously works, and the material level meter 10 detects the height of the materials in the three-stage feeding box 7 and feeds the material back to the remote controller; when the material height is lower than the lowest lower limit, the primary feeding conveyor 6 and the secondary feeding conveyor 11 are automatically started, and due to the linkage relationship, the belt conveyor 4, the dry material vibrating screen 3, the weighing conveyor 2 and the thin material vibrating hopper 9 are all started, the automatic valve of the dry material hopper 5 is opened, and dry material and thin material are simultaneously conveyed into the primary feeding conveyor 6 and the secondary feeding conveyor 11 to be stirred and then conveyed into the three-stage feeding box 7; when the material height is higher than the highest upper limit, the first-stage feeding conveyor 6 and the second-stage feeding conveyor 11 are automatically closed, and due to the linkage relationship, the belt conveyor 4, the dry material vibrating screen 3, the weighing conveying device 2 and the thin material vibrating hopper 9 are all closed, the automatic valve of the dry material hopper 5 is closed, and the three-stage feeding box 7, the dry material hopper 1 and the bin wall vibration exciter of the thin material vibrating hopper 9 work periodically, as shown in fig. 8.

When in detection maintenance, the remote controller is switched to a field control mode and a manual mode, all motors are independent from each other, and maintenance personnel can start or stop related equipment on the field to carry out detection maintenance. At the same time, the remote controller can be maintained by a remote operation and maintenance technician.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. An oily sludge feeding system is characterized by comprising a feeding device and a control system;

the feeding device comprises a dry material hopper (1), a thin material vibrating hopper (9), a weighing and conveying device (2), a dry material vibrating screen (3), a belt conveyor (4), a dry material hopper (5), a primary feeding conveyor (6), a secondary feeding conveyor (11), a tertiary feeding conveyor (8), wherein the dry material hopper (1) is arranged above the input end of the weighing and conveying device (2), the output end of the weighing and conveying device (2) extends to the position above the dry material vibrating screen (3), the dry material vibrating screen (3) is arranged above the input end of the belt conveyor (4), the output end of the belt conveyor (4) extends to the position above the dry material hopper (5), the discharge openings of the thin material vibrating hopper (9) and the dry material hopper (5) are arranged above the primary feeding conveyor (6), the output end of the primary feeding conveyor (6) is arranged above the input end of the secondary feeding conveyor (11), and the output end of the primary feeding conveyor (6) is arranged above the tertiary feeding conveyor (7), and the output end of the dry material hopper (5) is connected with the tertiary feeding conveyor (7);

2. An oily sludge feed system as claimed in claim 1 wherein the secondary feed conveyor (11) is provided with an inert gas inlet pipe (12) and an inert gas outlet pipe (13), the inert gas outlet pipe (13) being provided with a one-way valve, the secondary feed conveyor (11) being operated with inert gas fed from the inert gas inlet pipe (12).

3. An oily sludge feeding system according to claim 1, wherein the three-stage feeding box (7) and the three-stage feeding conveyor (8) are provided with heaters (14) at the periphery, the heaters (14) are used for preheating materials entering the three-stage feeding box (7) and preventing the materials from cooling, and heat preservation cotton (15) is wrapped outside the three-stage feeding box (7), the three-stage feeding conveyor (8) and the heaters (14).

4. An oily sludge feed system as claimed in claim 1 wherein the tertiary feed conveyor (8) housing is provided with a temperature sensor for sensing the temperature of the material.

5. An oily sludge feeding system according to claim 1, wherein the thin material vibration hopper (9), the dry material hopper (1) and the inner side wall of the three-stage feeding box (7) are respectively provided with an anti-adhesion lining plate, and the thin material vibration hopper (9), the dry material hopper (1) and the outer side wall of the three-stage feeding box (7) are respectively provided with a bin wall vibration exciter.

6. An oily sludge feed system as claimed in claim 5 wherein the anti-adhesion liner is a polyurethane board.

7. An oily sludge feeding system according to claim 1, wherein the weighing and conveying device (2) is internally provided with a weighing module, and the weighing module can automatically calculate the weighing weight according to the speed, flow rate and weight of conveyed materials and feed the data back to a remote controller.

8. An oily sludge feeding system according to claim 1, wherein the blanking mouth of the dry hopper (5) is provided with an automatic valve, the opening/closing of which can be controlled by the PLC control cabinet.

9. An oil-containing sludge feeding system according to claim 1, characterized in that a level gauge (10) is mounted in the three-stage feed tank (7), the level gauge (10) being capable of measuring the level of material in the three-stage feed tank (7) and feeding back data to a remote controller.

10. An oily sludge feed system as claimed in claim 1 wherein the belt conveyor (4) motor, the dry material vibrating screen (3) motor, the weighing conveyor (2) motor, the thin material vibrating hopper (9) motor are all capable of interlocking with the primary feed conveyor (6) motor, the secondary feed conveyor (11) motor.

11. A method of controlling an oily sludge feed system comprising an oily sludge feed system according to any of claims 1-10;

before conveying materials, detecting the liquid content of the materials, enabling the dry materials to enter the dry material hopper (1) after passing through the crushing and screening hopper, and enabling the thin materials to enter the thin material vibration hopper (9) through the grab bucket;

when materials are conveyed, the remote controller is switched to a remote control mode and an automatic mode, the three-stage feeding conveyor (8) continuously works, and the material level meter (10) detects the height of the materials in the three-stage feeding box (7) and feeds the material back to the remote controller; when the material height is lower than the lowest lower limit, the primary feeding conveyor (6) and the secondary feeding conveyor (11) are automatically started to convey dry materials/thin materials or simultaneously; when the material height is higher than the highest upper limit, the primary feeding conveyor (6) and the secondary feeding conveyor (11) are automatically closed, and a bin wall vibration exciter of the three-stage feeding box (7) periodically works;

12. The method of controlling an oil-containing sludge feeding system according to claim 11, wherein the dry materials include a general dry material and an extra dry material, the lean materials include a general lean material and an extra lean material, the general dry material and the general lean material are capable of being transported separately, and the extra dry material and the extra lean material are transported simultaneously and stirred by the primary feed conveyor (6) and the secondary feed conveyor (11).

13. The control method of an oil-containing sludge feeding system according to claim 11, wherein when dry materials are conveyed, the motor of the belt conveyor (4), the motor of the dry material vibrating screen (3) and the motor of the weighing and conveying device (2) are all interlocked with the motor of the primary feeding conveyor (6) and the motor of the secondary feeding conveyor (11); when thin materials are conveyed, the thin material vibration hopper (9) is interlocked with the motor of the primary feeding conveyor (6) and the motor of the secondary feeding conveyor (11), and when dry materials and thin materials are conveyed, the motor of the belt conveyor (4) and the motor of the dry material vibration screen (3) are interlocked with the motor of the weighing conveying device (2) and the motor of the thin material vibration hopper (9) are interlocked with the motor of the primary feeding conveyor (6) and the motor of the secondary feeding conveyor (11).

14. The method according to claim 11, wherein the automatic valve of the blanking port of the dry material hopper (5) is closed when the thin material is conveyed, and the automatic valve of the blanking port of the dry material hopper (5) is opened when the dry material or the dry material and the thin material are conveyed simultaneously.