Automatic dry sludge loading system and control method

Abstract

The invention discloses an automatic dry sludge loading system and a control method. The method comprises the steps that a sludge unloading vehicle runs to a heavy-load track moving intelligent platform, and the heavy-load track moving intelligent platform moves the sludge unloading vehicle to the position below a sludge bin; the feeding port is aligned with the discharging port, and the dust removal device is controlled to connect and seal other feeding ports in the sludge discharging car; the gate valve is opened, the sludge enters a dust removal device in the sludge discharging car through the feeding port for air exhaust, and dust and air at other feeding ports in the sludge discharging car are sucked away; after loading is completed, the heavy-load track moving intelligent platform drives the sludge unloading vehicle to move to the next position, and the remaining feeding ports are sequentially aligned with the discharging ports one by one; and after loading is completed, the heavy-load track moving intelligent platform moves the sludge unloading vehicle to the initial position, and then the driver drives the sludge unloading vehicle away. Automatic treatment and intelligent operation are achieved, and the sludge treatment efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge treatment, in particular to an automatic dry sludge loading system and a control method. Background Art

[0002] After purification, industrial and domestic wastewater produces a large amount of sludge with a water content of 99.7-97%. After dehydration by conventional sludge dehydration equipment, it becomes sludge with a water content of about 80-85%. According to the survey results, nearly 90% of the sludge produced by wastewater treatment stations and sewage treatment plants has not been properly reduced and recycled. Further drying of sludge is a very feasible method for sludge reduction. This type of pre-dehydrated sludge can be further dried without generating secondary waste gas pollution, and it is a technical problem in the field of environmental protection to efficiently reduce energy consumption.

[0003] At present, the sludge drying process equipment that is widely used at home and abroad is mainly thermal drying technology, including fluidized bed drying, belt drying, horizontal rotary drying, paddle drying, vertical disc drying, spray drying and other process equipment. The drying process and equipment need to be selected in combination with the requirements of the sludge treatment project while comprehensively considering the maturity of the technology and the investment and operation costs; at the same time, the dust and odor emissions generated during the sludge drying process need to be additionally treated with additional facilities for prevention and control. The existing loading and dust removal system adopts a unloading screw machine plus a feeding chute loading device design. Basically, the air is directly induced on the feeding chute to remove dust. The induced air pipeline is installed on the feeding chute to the sludge silo, and the negative pressure in the silo formed when the sludge silo dust collector is working is used to suck the dust from the loading operation. Due to design reasons, the existing loading and dust removal system is affected by factors such as negative pressure and insufficient flow, and cannot effectively absorb the impact airflow of falling materials, and the dust suppression effect is generally poor.

[0004] In addition, the existing sludge drying technology mostly uses single-performance equipment to implement drying treatment. While drying the sludge, there are inevitably problems of dust and odor emissions. If additional treatment and prevention facilities are not added, it is bound to cause secondary pollution to the environment.

[0005] In addition, the loading process in the mud unloading room is basically manual operation by the driver (vehicle) in cooperation with the on-site operators. Two on-site operators are required to cooperate in one loading operation. The on-site operator is responsible for guiding the vehicle into position, and at the same time, climbing onto the top of the dump truck through the mobile step ladder, and operating the unloading chute to align with one of the loading ports of the dump truck; during the loading process, it is necessary to observe the loading situation of the loading port at any time with the naked eye, and use tools to manually control the accumulation of dry sludge at the tanker inlet in time to prevent the sludge from piling up and pushing back into the unloading chute, causing unsmooth unloading or even overflowing from the vehicle. When the on-site operator determines that the loading port is full, the driver and the vehicle need to cooperate to repeat the previous operation twice until the entire vehicle is judged to be full and a loading operation is completed. The dry sludge in the silo occasionally clumps. During the loading process, the unloading chute and the unloading screw machine have been blocked. The equipment needs to be cut, the cleaning port opened, the blockage is manually cleared, and the cleaning port is welded and repaired before it can resume operation. The overall processing process is complicated, resulting in low efficiency. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a dry sludge automatic loading system and a control method.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A control method for a dry sludge automatic loading system comprises the following steps:

[0009] The driver drives the sludge unloading vehicle to the heavy-load rail mobile intelligent platform and stops, and the heavy-load rail mobile intelligent platform moves the sludge unloading vehicle to the bottom of the sludge silo;

[0010] Check whether the feed port of the sludge unloading vehicle is aligned with the discharge port of one of the automatic loading devices, that is, the feed port is connected to the screening crusher at the discharge port. If it is aligned, control the dust removal device to connect and seal the other feed ports on the sludge unloading vehicle;

[0011] Open the gate valve to allow the sludge in the sludge silo to enter the screening crusher through the discharge port, and then enter the sludge unloading vehicle through the feed port after being crushed. During this process, the dust removal device extracts air and absorbs the dust and gas at other feed ports in the sludge unloading vehicle;

[0012] When it is detected that the current feed inlet is filled with sludge, the gate valve and the screening crusher are closed to prevent the sludge from entering the current feed inlet. The heavy-load track mobile intelligent platform drives the sludge unloading vehicle to move to the next position, and aligns the remaining feed inlets with the discharge ports one by one.

[0013] After loading is completed, the heavy-load rail mobile intelligent platform moves the sludge unloading truck to the initial position, and then the driver drives the sludge unloading truck away.

[0014] When the heavy-load rail mobile intelligent platform drives the sludge unloading truck to move, the front, back, left and right positions of the sludge unloading truck are detected in real time, and the detected information is transmitted to the display screen for real-time display on the display screen.

[0015] When the sludge unloading vehicle moves to the designated position, the locking cylinder drives the locking block to press against the sludge unloading vehicle, so that the sludge unloading vehicle is kept at the current position.

[0016] When detecting whether the feed port of the sludge unloading vehicle is filled with sludge, the sludge unloading vehicle is weighed to check whether the weight change before and after reaches the preset value, and the photoelectric sensor is used to detect whether there is sludge on the surface of the feed port for judgment;

[0017] During the process of unloading the sludge in the sludge silo into the sludge unloading vehicle, filming is performed and the captured images are transmitted to the remote terminal, and at the same time, the video data is sent to the display screen for real-time display.

[0018] A dry sludge automatic loading system, comprising:

[0019] An automatic loading device is installed at the discharge port of the sludge silo. The automatic loading device is provided with a discharge port to transport the sludge to the sludge unloading vehicle. The sludge unloading vehicle has at least two feed ports;

[0020] Heavy-load rail mobile intelligent platform, laid on the ground, is used to drive the sludge unloading vehicle to the designated area;

[0021] A detection device, used to detect whether one of the feeding ports on the sludge unloading vehicle is aligned with the unloading port of the automatic loading device;

[0022] The dust removal device is used to connect and seal the remaining feeding ports on the unloading vehicle and to perform air suction and dust extraction;

[0023] When it is detected that the area inside the sludge unloading vehicle corresponding to the current feeding port of the sludge unloading vehicle is filled with sludge, the feeding port is sealed, and then another feeding port on the sludge unloading vehicle is aligned with the unloading port on the automatic loading device, and at the same time, the dust removal device is connected to seal the other feeding ports on the sludge unloading vehicle, and the process is circulated until the space inside the sludge unloading vehicle is full;

[0024] The heavy-load rail mobile intelligent platform drives the sludge unloading vehicle filled with sludge back to the initial position, and the driver drives the vehicle away, completing the loading operation;

[0025] Controller, used to control automatic loading device, heavy-load rail mobile intelligent platform and dust removal device.

[0026] The detection device is a photoelectric sensor, which is arranged at the unloading port of the automatic loading device, and simultaneously detects whether the unloading port of the automatic loading device is aligned with the feeding port of the sludge unloading vehicle, and whether the sludge in the feeding port is fully filled.

[0027] The heavy-load mobile intelligent platform is provided with a weighing component, which is connected to the controller and is used to measure the weight of the sludge unloading vehicle.

[0028] The automatic loading device includes a screw machine and a gate valve. The gate valve is arranged at the port of the discharge port, and the screw machine is located in the discharge port. The screw machine and the gate valve are respectively connected to a controller, and the controller controls the opening and closing of the gate valve and the screw machine.

[0029] A power supply device is provided on one side of the heavy-load track mobile intelligent platform, and the power supply device provides power for the heavy-load track mobile intelligent platform.

[0030] A screening crusher is installed at the unloading port of the automatic loading device.

[0031] Compared with the prior art, the present invention has the following beneficial technical effects:

[0032] Intelligent operation uses a heavy-load rail mobile intelligent platform to drive the sludge unloading truck to the designated position, and realizes precise positioning through detection. The sludge in the sludge silo is crushed by a screening crusher and then sent to the sludge unloading truck to prevent agglomerated mud from entering the sludge unloading truck and affecting subsequent processing. Each feeding port on the sludge unloading truck is filled with sludge in turn. At the same time, dust is extracted through a dust collector during the sludge loading process to ensure that dust is not scattered in the workshop. Visual monitoring is carried out by shooting, which makes viewing more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the process of the present invention;

[0034] Figure 2 It is a schematic diagram of the overall structure of the system of the present invention;

[0035] Figure 3 It is a structural schematic diagram of the automatic loading device in the present invention;

[0036] Figure 4 This is a structural diagram of the heavy-load rail mobile intelligent platform. DETAILED DESCRIPTION

[0037] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0038] In the description of the present invention, it should be understood that if there are terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiment 1

[0041] Refer to Figure 2-4 As shown, an automatic dry sludge loading system includes:

[0042] An automatic loading device 3 is installed at the discharge port of the sludge silo 2. The automatic loading device 3 is provided with a feeding port for transporting sludge into the sludge unloading vehicle. The sludge unloading vehicle has three feeding ports, and feeding from the feeding ports at three different positions can make the sludge more evenly spread in the sludge unloading vehicle. There are multiple sludge silos.

[0043] The heavy-duty rail mobile intelligent platform 1 is laid on the ground and is used to drive the sludge unloading vehicle to a designated area. The heavy-duty rail mobile intelligent platform has a driving component and a guide rail. The guide rail is provided with a sliding plate, which is connected to the driving component. After the sludge unloading vehicle drives to the sliding plate, the driving component drives the sliding plate to move, thereby realizing the movement of the sludge unloading vehicle. Alternatively, multiple motors are installed on the side of the sliding plate, and the driving shaft of the motor is connected to a pulley, which is located on the bottom surface of the sliding plate to support the sliding plate.

[0044] The detection device is used to detect whether one of the feed ports on the sludge unloading vehicle is aligned with the discharge port of the automatic loading device. It can be a photoelectric sensor or other types of sensors to ensure that the feed port on the sludge unloading vehicle can be accurately aligned with the discharge port, so that the sludge in the sludge silo can accurately enter the sludge unloading vehicle.

[0045] The dust removal device is used to connect and seal the remaining feed ports on the unloading vehicle and to suction and remove dust. For example, if there are three feed ports, when loading sludge, only one feed port is connected to the discharge port, and the other two feed ports are connected to the dust removal device to form an isolation seal from the outside. The dust extraction device sucks, and the dust generated during the unloading process is sucked into the dust removal device to prevent the dust from flying outside.

[0046] When it is detected that the area inside the vehicle corresponding to the current feeding port of the sludge unloading truck is filled with sludge, the feeding port is closed, and then another feeding port on the sludge unloading truck is aligned with the unloading port on the automatic loading device. At the same time, the dust removal device is connected to seal the other feeding ports on the sludge unloading truck, and the process is repeated until all the feeding ports on the sludge unloading truck are full.

[0047] The heavy-load rail-mobile intelligent platform drives the sludge unloading truck filled with sludge back to the initial position, and the driver drives the vehicle away, completing the loading operation.

[0048] The controller is used to control the automatic loading device, the heavy-load rail mobile intelligent platform and the dust removal device. The controller can be selected as a PLC control terminal to achieve unified control of each device, coordinate work, and realize automatic processing.

[0049] The whole can form a workshop structure and a frame, with the sludge silo installed on the top of the frame and the heavy-load rail mobile intelligent platform installed inside the frame.

[0050] The heavy-load mobile intelligent platform is provided with a weighing assembly, which is connected to the controller and is used to measure the weight of the sludge unloading vehicle, the weight of the sludge unloading vehicle when empty, the weight of the internal area of ​​one feed inlet filled, the weight of the area of ​​two feed inlets filled, and the weight of the area of ​​three feed inlets filled.

[0051] The automatic loading device includes a screw machine and a gate valve. The gate valve is arranged at the port of the discharge port, and the screw machine is located in the discharge port. The screw machine and the gate valve are respectively connected to a controller. The controller controls the opening and closing of the gate valve and the screw machine. The screw machine can better transport the sludge and avoid the problem of sludge agglomeration in the discharge port, which leads to the inability to discharge smoothly.

[0052] A power supply device is provided on one side of the heavy-duty rail mobile intelligent platform, which provides power for the heavy-duty rail mobile intelligent platform. A closed safety busbar system is used to provide power for the sensors, motor drives, and control system equipment installed on the heavy-duty rail mobile intelligent platform system. The safety busbar is installed at the bottom of the beam on the first floor of the drying workshop, with a relative height of ≥3.5 meters from the ground, and power is drawn through the brushes installed on the mobile platform gantry. The closed safety busbar is installed on an elevated platform, without the risk of human contact, and uses a standard voltage of 380V 50Hz.

[0053] A screening crusher is installed at the unloading port of the automatic loading device to prevent large agglomerated mud blocks from entering the sludge unloading vehicle.

[0054] Embodiment 2

[0055] refer to Figure 1 As shown, a control method for a dry sludge automatic loading system comprises the following steps:

[0056] The main control console issues a loading command, and the driver drives the sludge unloading truck to the heavy-load rail mobile intelligent platform and stops. The heavy-load rail mobile intelligent platform moves the sludge unloading truck to the bottom of the sludge silo.

[0057] Check whether the feed port of the sludge unloading vehicle is aligned with the discharge port of one of the automatic loading devices, that is, the feed port is connected to the screening crusher at the discharge port. If it is aligned, control the dust removal device to connect and seal the other feed ports on the sludge unloading vehicle.

[0058] Open the gate valve to allow the sludge in the sludge silo to enter the screening crusher through the discharge port, and then enter the sludge unloading truck through the feed port after being crushed. During this process, the dust removal device draws air to suck away the dust and gas at other feed ports in the sludge unloading truck. The suction force of the dust removal device will be set in a relatively constant range. The suction force will not be too large to suck away the internal sludge, but to ensure that the dust is sucked away.

[0059] When it is detected that the current feed inlet is filled with sludge, the gate valve and the screening crusher are closed to prevent the sludge from entering the current feed inlet. The intelligent platform driven by the heavy-duty track moves the sludge unloading truck to the next position, and successively aligns the remaining feed inlets with the discharge opening one by one. In this embodiment, the sludge unloading truck has a total of three feed inlets arranged along the axis of the truck. By filling the sludge through three feed inlets at different positions, the unevenness problem caused by filling the sludge at one position can be avoided, and the sludge in the truck can be more evenly distributed after being filled through the three feed inlets.

[0060] After the loading is completed, the intelligent platform driven by the heavy-duty track moves the sludge unloading truck to the initial position, and then the driver drives the sludge unloading truck away.

[0061] During the whole processing process, no manual operation is required, realizing unmanned operation, which not only improves the safety but also enhances the production efficiency, and the working environment is cleaner.

[0062] In addition, a display screen is also set. When the intelligent platform driven by the heavy-duty track moves the sludge unloading truck, the positions of the sludge unloading truck in the front, back, left and right are detected in real time, and the detected information is transmitted to the display screen for real-time display, which is convenient for the workers to view.

[0063] A safety mechanism can also be set on the intelligent platform driven by the heavy-duty track. The safety mechanism can be a locking cylinder. After the sludge unloading truck moves to the designated position, the locking block is driven by the locking cylinder to tightly press against the sludge unloading truck, so that the sludge unloading truck remains in the current position, ensuring the stability of the truck during the unloading process.

[0064] When detecting whether the feed inlet of the sludge unloading truck is filled with sludge, a method of weighing the sludge unloading truck is adopted to check whether the change in the front and back weights reaches the preset value, and it is judged by detecting whether there is sludge on the surface of the feed inlet through a photoelectric sensor. For example, if there are a total of three feed inlets on the sludge unloading truck, each feed inlet fills the sludge with a corresponding weight. A weight setting is made in advance, that is, how much is the weight of the whole vehicle under the empty vehicle condition. Then the first feed inlet fills the sludge, and stops after the corresponding weight is detected by weighing; the sludge unloading truck is moved to the second feed inlet, and the sludge is continuously filled until all three feed inlets are filled.

[0065] During the process of discharging the sludge from the sludge silo into the sludge unloading truck, shooting is carried out, and the captured images are transmitted to the remote terminal, and at the same time the video data is sent to the display screen for real-time display. The whole process is photographed to ensure the controllability of the process, enable real-time observation, and facilitate retrospective tracking.

[0066] During the whole process, only power needs to be supplied, and unified allocation is realized through the controller, and each device coordinates with each other to work.

[0067] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for a dry sludge automatic loading system, characterized in that: The following steps are involved: The driver drives the sludge unloading vehicle to the heavy-load rail mobile intelligent platform and stops, and the heavy-load rail mobile intelligent platform moves the sludge unloading vehicle to the bottom of the sludge silo; Check whether the feed port of the sludge unloading vehicle is aligned with the discharge port of one of the automatic loading devices, that is, the feed port is connected to the screening crusher at the discharge port. If it is aligned, control the dust removal device to connect and seal the other feed ports on the sludge unloading vehicle; Open the gate valve to allow the sludge in the sludge silo to enter the screening crusher through the discharge port, and then enter the sludge unloading vehicle through the feed port after being crushed. During this process, the dust removal device extracts air and absorbs the dust and gas at other feed ports in the sludge unloading vehicle; When it is detected that the current feed inlet is filled with sludge, the gate valve and the screening crusher are closed to prevent the sludge from entering the current feed inlet. The heavy-load track mobile intelligent platform drives the sludge unloading vehicle to move to the next position, and aligns the remaining feed inlets with the discharge ports one by one. After loading is completed, the heavy-load rail mobile intelligent platform moves the sludge unloading truck to the initial position, and then the driver drives the sludge unloading truck away.

2. The control method of the automatic loading system of dry sludge according to claim 1 is characterized in that: When the heavy-load rail mobile intelligent platform drives the sludge unloading truck to move, the front, back, left and right positions of the sludge unloading truck are detected in real time, and the detected information is transmitted to the display screen for real-time display on the display screen.

3. The control method of the automatic loading system of dry sludge according to claim 2 is characterized in that: When the sludge unloading vehicle moves to the designated position, the locking cylinder drives the locking block to press against the sludge unloading vehicle, so that the sludge unloading vehicle is kept at the current position.

4. The control method of the automatic loading system of dry sludge according to claim 3 is characterized in that: When detecting whether the feed port of the sludge unloading vehicle is filled with sludge, the sludge unloading vehicle is weighed to check whether the weight change before and after reaches the preset value, and the photoelectric sensor is used to detect whether there is sludge on the surface of the feed port for judgment; During the process of unloading the sludge in the sludge silo into the sludge unloading vehicle, filming is performed and the captured images are transmitted to the remote terminal, and at the same time, the video data is sent to the display screen for real-time display.

5. An automatic dry sludge loading system using the method of claim 4, characterized in that: include: An automatic loading device is installed at the discharge port of the sludge silo. The automatic loading device is provided with a discharge port to transport the sludge to the sludge unloading vehicle. The sludge unloading vehicle has at least two feed ports; Heavy-load rail mobile intelligent platform, laid on the ground, is used to drive the sludge unloading vehicle to the designated area; A detection device, used to detect whether one of the feeding ports on the sludge unloading vehicle is aligned with the unloading port of the automatic loading device; The dust removal device is used to connect and seal the remaining feed inlets on the sludge unloading vehicle and to perform air suction and dust extraction; When it is detected that the area inside the sludge unloading vehicle corresponding to the current feeding port of the sludge unloading vehicle is filled with sludge, the feeding port is sealed, and then another feeding port on the sludge unloading vehicle is aligned with the unloading port on the automatic loading device, and at the same time, the dust removal device is connected to seal the other feeding ports on the sludge unloading vehicle, and the process is circulated until the space inside the sludge unloading vehicle is full; The heavy-load rail mobile intelligent platform drives the sludge unloading vehicle filled with sludge back to the initial position, and the driver drives the vehicle away, completing the loading operation; Controller, used to control automatic loading device, heavy-load rail mobile intelligent platform and dust removal device.

6. The automatic dry sludge loading system according to claim 5, characterized in that: The detection device is a photoelectric sensor, which is arranged at the unloading port of the automatic loading device, and simultaneously detects whether the unloading port of the automatic loading device is aligned with the feeding port of the sludge unloading vehicle, and whether the sludge in the feeding port is fully filled.

7. The automatic dry sludge loading system according to claim 6, characterized in that: The heavy-load mobile intelligent platform is provided with a weighing component, which is connected to the controller and is used to measure the weight of the sludge unloading vehicle.

8. The automatic dry sludge loading system according to claim 7, characterized in that: The automatic loading device includes a screw machine and a gate valve. The gate valve is arranged at the port of the discharge port, and the screw machine is located in the discharge port. The screw machine and the gate valve are respectively connected to a controller, and the controller controls the opening and closing of the gate valve and the screw machine.

9. The automatic dry sludge loading system according to claim 8, characterized in that: A power supply device is provided on one side of the heavy-load track mobile intelligent platform, and the power supply device provides power for the heavy-load track mobile intelligent platform.

10. The automatic dry sludge loading system according to claim 9, characterized in that: A screening crusher is installed at the unloading port of the automatic loading device.

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