Sludge entering receiving device and automatic control method

Abstract

The invention discloses a sludge entering receiving device which comprises a truck scale arranged at an inlet of a sludge plant and used for weighing a sludge truck; a ground induction coil is arranged at the bottom of the unloading hall; the gas collecting hood is communicated with the unloading hall; the roller shutter door is arranged at the joint of the discharging hall and the gas collecting hood; the sludge bin is arranged below the gas-collecting hood, a sludge inlet and a level gage are arranged at the top of the sludge bin, and a weighing module is arranged at the bottom of the sludge bin and communicated with the sludge bin; the air purifying device is communicated with the gas collecting hood and the sludge bin; and the control device is used for controlling the unloading process of the sludge truck. The invention further discloses an automatic control method of the sludge entering receiving device. The sludge truck has the beneficial effects that the control device controls the unloading process of the sludge truck, the unloading process can be remotely monitored in real time, guidance and arrangement of field personnel are not needed, and automatic guidance of the sludge truck is achieved. Meanwhile, the gas collecting hood and the air purifying device are communicated with the sludge bin, so that the problem of odor overflow is avoided, and the field environment is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection, and in particular to a sludge inflow receiving device and an automatic control method. Background Art

[0002] The residual sludge generated during the sewage treatment process will be transported by vehicles to a centralized disposal center for treatment and disposal. In the prior art, the sludge transported by vehicles is usually unloaded, received, stored and transported in an orderly manner in steps, and then subsequently incinerated and purified. However, the sludge contains a large amount of organic matter, and a large amount of smelly gas components such as hydrogen sulfide, methane, and ammonia will be emitted during the storage and transportation process. In the above-mentioned treatment process, on-site guidance and arrangements by operators are required, and the labor intensity of workers is high. Moreover, if mistakes occur during the treatment process, not only will there be problems such as waste spillage and odor overflow, which will damage the on-site environment, but also cause damage to the health of surrounding workers. Summary of the invention

[0003] In order to solve the above problems, the object of the present invention is to provide a sludge incoming receiving device and an automatic control method.

[0004] The present invention provides a sludge inlet receiving device, comprising:

[0005] Truck scale, which is installed at the entrance of the sludge plant to weigh the sludge truck;

[0006] The unloading hall has a ground sensing coil at the bottom;

[0007] A gas collecting hood, which is arranged at one side of the unloading hall and communicated with the unloading hall;

[0008] A rolling door is provided at the connection between the unloading hall and the gas collecting hood, and an air curtain is provided on the side close to the unloading hall;

[0009] A sludge bin is arranged below the gas collecting hood, with a sludge inlet and a material level meter at the top and a weighing module at the bottom, wherein the sludge inlet is provided with a hydraulic bin cover and a grille in sequence from top to bottom, and the gas collecting hood is connected with the sludge bin through the sludge inlet;

[0010] An air purification device, which is arranged outside the unloading hall and is connected to the air collecting hood and the sludge bin;

[0011] The control device is communicatively connected with the truck scale, the ground sensor coil, the rolling door, the material level meter, the air purification device and the weighing module to control the unloading process of the sludge truck.

[0012] As a further improvement of the present invention, the unloading hall is provided with two sets of indicator lights, which are respectively arranged at the entrance of the unloading hall and above the rolling door, and are communicatively connected with the control device to indicate the current status of the unloading hall.

[0013] As a further improvement of the present invention, the sludge incoming receiving device also includes a sludge discharge device, which is arranged below the sludge bin and is communicatively connected with the control device for discharging the sludge in the sludge bin.

[0014] As a further improvement of the present invention, the sludge incoming receiving device also includes a car washing device, which is arranged on the top of the unloading hall and is communicatively connected to the control device for washing the sludge truck after unloading is completed.

[0015] The present invention also provides an automatic control method for a sludge inlet receiving device, the method comprising:

[0016] The truck scale weighs the sludge truck to determine the sludge load of the sludge truck, and allocates a target unloading hall to the sludge truck according to the sludge load, wherein one of the multiple unloading halls is determined as the target unloading hall according to the current status of each of the unloading halls;

[0017] After the ground sensor coil detects that the sludge truck has entered the target unloading hall, the rolling door, air purification device and sludge bin are opened in sequence to start unloading;

[0018] Real-time detection of the sludge weight in the sludge bin. When it is detected that the sludge weight has not changed within a preset time, the current weight of the sludge bin is saved, and the added weight of the sludge bin is obtained according to the initial weight of the sludge bin and the current weight of the sludge bin. The sludge bin, the rolling door and the air purification device are closed in sequence. The initial weight of the sludge bin is the weight of the sludge bin after the last unloading is completed.

[0019] After unloading is completed and the ground sensor coil detects that the sludge truck has exited the target unloading hall, the truck scale re-weighs the sludge truck to obtain the current weight of the sludge truck, and determines the actual sludge unloading amount according to the sludge load and the current weight of the sludge truck;

[0020] The unloading situation is determined according to the actual sludge unloading amount and the increased weight of the sludge bin.

[0021] As a further improvement of the present invention, the step of determining one of the plurality of unloading halls as the target unloading hall according to the current status of each of the unloading halls comprises:

[0022] If the free volume of the sludge bin of the current unloading hall is greater than or equal to the sludge load, the indicator light of the current unloading hall lights up, indicating that the current unloading hall is used as an alternative unloading hall; otherwise, the indicator light of the current unloading hall goes out;

[0023] One is determined from at least one of the candidate unloading halls as the target unloading hall.

[0024] As a further improvement of the present invention, the method further comprises:

[0025] When the sludge truck enters the target unloading hall, the indicator light corresponding to the target unloading hall goes out;

[0026] After the sludge truck completes unloading and exits the target unloading hall, the indicator light of the target unloading hall remains off, waiting for the next distribution.

[0027] As a further improvement of the present invention, the method further comprises:

[0028] After the unloading is completed, the material level height in the sludge bin is detected, and the current sludge bin free space is determined according to the material level height, and when the current sludge bin free space is less than or equal to the set sludge free space value, the sludge discharge device is controlled to open to discharge the sludge in the sludge bin.

[0029] As a further improvement of the present invention, the determining of the unloading condition according to the actual sludge unloading amount and the increased weight of the sludge bin includes:

[0030] Determine the sludge difference between the actual sludge unloading amount and the increased weight of the sludge bin;

[0031] When the sludge difference is less than or equal to the set difference, it means that the error is within a reasonable range, and a vehicle departure signal is output;

[0032] When the sludge difference is greater than the set difference, an alarm signal is output and a detection personnel detects whether there is a fault.

[0033] As a further improvement of the present invention, the method further includes starting a car washing device to clean the sludge truck after unloading is completed.

[0034] The beneficial effects of the present invention are: by setting a control device to control the unloading process of the sludge truck, the unloading process can be remotely monitored in real time, without the need for on-site personnel to guide and arrange, thus realizing the automatic guidance of the sludge truck. At the same time, the air collection hood and the air purification device are connected to the sludge bin to avoid the problem of odor overflow during the unloading process, effectively improving the on-site environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0036] Figure 1 It is a structural schematic diagram of a sludge inlet receiving device according to an exemplary embodiment of the present invention;

[0037] Figure 2 It is a flow chart of an automatic control method of a sludge inlet receiving device according to an exemplary embodiment of the present invention;

[0038] Figure 3 The present invention is a schematic diagram of signal interaction of a control device in a sludge inlet receiving device according to an exemplary embodiment of the present invention.

[0039] In the figure,

[0040] 1. Sludge truck; 2. Truck scale; 3. Unloading hall; 4. Car washing device; 5. Indicator light; 6. Ground sensor coil; 7. Air curtain; 8. Rolling door; 9. Gas collecting hood; 10. Hydraulic bin cover; 11. Grille; 12. Gas concentration detection device; 13. Level meter; 14. Tap water pipeline; 15. Odor pipeline; 16. Odor fan; 17. Deodorization device; 18. Sludge bin; 19. Hydraulic slide; 20. Hydraulic station; 21. Hydraulic pipeline; 22. Weighing module; 23. Unloading screw; 24. Gate valve; 25. Control device; 26. Host computer. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, in the description of the present invention, the terms used are only for illustrative purposes and are not intended to limit the scope of the present invention. The terms "include" and / or "comprise" are used to specify the existence of the elements, steps, operations and / or components, but do not exclude the existence or addition of one or more other elements, steps, operations and / or components. The terms "first", "second" and the like may be used to describe various elements, do not represent the order, and do not limit these elements. In addition, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two and more than two. These terms are only used to distinguish one element from another element. In conjunction with the following drawings, these and / or other aspects become apparent, and it is easier for a person of ordinary skill in the art to understand the description of the embodiments of the present invention. The accompanying drawings are used to describe the embodiments of the present invention for illustrative purposes only. Those skilled in the art will easily recognize from the following description that, without departing from the principles of the present invention, alternative embodiments of the structures and methods shown in the present invention can be adopted.

[0044] like Figure 1 As shown, a sludge receiving device according to an embodiment of the present invention includes:

[0045] A truck scale 2, which is arranged at the entrance of the sludge plant and weighs the sludge truck 1;

[0046] The unloading hall 3 has a ground sensor coil 6 at the bottom;

[0047] An air collecting hood 9, which is arranged at one side of the unloading hall 3 and communicated with the unloading hall 3;

[0048] A rolling shutter door 8 is provided at the connection between the unloading hall 3 and the air collecting hood 9, and an intermittently running air curtain 7 is provided on the side close to the unloading hall 3;

[0049] A sludge bin 18 is arranged below the gas collecting hood 9, with a sludge inlet and a material level meter 13 on the top and a weighing module 22 on the bottom, wherein the sludge inlet is provided with a hydraulic bin cover 10 and a grille 11 in sequence from top to bottom, and the gas collecting hood 9 is connected to the sludge bin 18 through the sludge inlet;

[0050] An air purification device, which is arranged outside the unloading hall 3 and is connected to the air collecting hood 9 and the sludge bin 18;

[0051] The control device 25 is connected in communication with the truck scale 2, the ground sensor coil 6, the rolling door 8, the material level meter 13, the air purification device and the weighing module 22 to control the unloading process of the sludge truck.

[0052] When the device of the present application is used, the sludge truck 1 enters the site and drives to the truck scale 2 to stop. The truck scale 2 weighs the sludge truck 1 and uploads the weighing data and the sludge truck data (data representing the characteristics of the sludge truck, such as the license plate number) to the control device 25. The control device 25 outputs a "vehicle entry" signal. At the same time, the sludge load of the current sludge truck 1 is calculated and saved in combination with the dead weight of the sludge truck. Then, the target unloading hall is allocated to the current sludge truck 1 according to the sludge load. When the sludge truck 1 enters the target unloading hall and triggers the ground sensor coil 6 at the bottom of the target unloading hall, the control device 25 outputs a "sludge bin unloading" signal, controls the opening of the rolling door 8, the air purification device and the sludge bin 18 in sequence, and after detecting that all are opened, outputs a "start unloading" signal to instruct the sludge truck 1 to start unloading. The weighing module 22 sends the real-time detected sludge weight data to the control device 25. When the control device 25 detects that no new sludge weight data is sent by the weighing module 22 within a certain period of time, the increased weight of the sludge bin is calculated according to the current weight of the sludge bin, and the control device 25 outputs a "unloading completion" signal, and controls the closure of the sludge bin 18, the rolling door 8 and the air purification device in sequence. The level meter 13 re-detects the current material level height of the sludge bin 18 and transmits the current material level height to the control device 25. The control device 25 calculates the current sludge bin vacancy and updates the sludge bin vacancy of the target unloading hall to the calculated current sludge bin vacancy. The sludge truck 1 drives out of the target unloading hall, triggering the ground sensor coil 6. The sludge truck 1 drives out of the hall and stops at the truck scale 2. After the sludge truck 1 is weighed again to obtain the current weight of the sludge truck, it is uploaded to the control device 25, and the actual sludge unloading amount is determined according to the sludge load. At the same time, the actual sludge unloading amount is compared with the added weight of the sludge bin to determine whether the unloading is completed. If it is determined that the unloading is completed, the control device 25 outputs a "vehicle departure" signal and turns off the monitoring of the vehicle. If it is determined that the unloading is not completed, the control device 25 outputs an "alarm" signal, and the inspection personnel detect whether there is a fault.

[0053] Among them, a gas concentration detection device 12 is provided above the gas collecting hood 9, which is communicated with the control device 25 and is used to detect the concentration of toxic gases such as H2S and CH4, and send an alarm to the control device 25 when the gas concentration exceeds the standard. If the current sludge truck 1 is unloading, the control device 25 will send an alarm and control to stop unloading, close the sludge bin 18 and the rolling door 8, keep the air purification device turned on to extract the gas in the gas collecting hood 9 until the gas concentration returns to below the normal limit and then reopen the unloading; if the current sludge truck 1 has completed unloading, the control device 25 will turn on the air purification device to extract the gas in the gas collecting hood 9 until the gas concentration returns to below the normal limit.

[0054] The wind curtain 7 is formed by compressed air flow and is opened or closed synchronously with the rolling shutter door 8 to achieve intermittent operation. The wind curtain 7 can continuously output high-pressure airflow to block the air circulation between the unloading hall 3 and the air collecting hood 9, effectively preventing the odor above the sludge bin 18 from overflowing into the unloading hall 3.

[0055] The hydraulic bin cover 10 is connected to the hydraulic station 20 through the hydraulic pipeline 21, and the hydraulic station 20 is connected to the control device 25 in communication, and the operating position of the hydraulic bin cover 10 can be fed back to the control device 25 through the limit switch. After the control device 25 outputs the "sludge bin unloading" signal, the hydraulic bin cover 10 is controlled to be opened. After the hydraulic bin cover 10 is opened to a certain position, the "start unloading" signal is output to indicate that the sludge truck 1 can start pouring sludge from the sludge inlet. After the control device 25 outputs the "unloading completion" signal, the hydraulic bin cover 10 is controlled to be closed, which can effectively prevent the odor in the sludge bin 18 from escaping and avoid pollution to the unloading hall 3 and the surrounding environment.

[0056] Preferably, the grille 11 covers the entire sludge inlet of the sludge bin 18 and is arranged with square meshes of a certain specification. The hole specification of the grille 11 is preferably 20cm*20cm, which can screen out large impurities in the sludge to prevent them from falling into the sludge bin 18. The grille 11 is made of metal or hard plastic material. It is understandable that the present application does not limit its specific material.

[0057] The air purification device includes a deodorizing device 17 and an odor blower 16 which are connected in sequence. The odor blower 16 is respectively connected to the air collecting hood 9 and the sludge bin 18 through an odor pipe 15. Under the control of the control device 25, the odor blower 16 extracts the odor above the air collecting hood 9 and the sludge bin 18 and sends it to the deodorizing device 17 for treatment.

[0058] like Figure 3 As shown, the control device 25 includes a PLC control system and a host computer 26. The PLC control system can feed back on-site status signals (such as "vehicle entry" signal, "sludge bin unloading" signal and "alarm" signal, etc.) and detection data (such as entry weighing data, sludge truck data, sludge weight and current material level height, etc.) to the remote host computer 26 to facilitate the staff to monitor the unloading process of the sludge truck 1.

[0059] The present invention controls the unloading process of the sludge truck 1 by setting a control device 25, can remotely monitor the unloading process in real time, and does not require guidance and arrangement by on-site personnel, thereby realizing automatic guidance of the sludge truck 1. At the same time, the air collecting hood 9 and the air purification device are connected to the sludge bin 18, which avoids the problem of odor overflow during the unloading process and effectively improves the on-site environment.

[0060] Preferably, the sludge truck 1 includes a hydraulic lifting device for automatic unloading. The sludge bin 18 is a concrete structure with an effective internal volume of 200m 3 .

[0061] In one embodiment, the unloading hall 3 is provided with two sets of indicator lights 5, which are respectively arranged at the entrance of the unloading hall 3 and above the rolling door 8, and are communicatively connected with the control device 25 to indicate the current state of the unloading hall 3.

[0062] The indicator light 5 at the entrance of the unloading hall 3 is on, indicating that the sludge bin 18 in the unloading hall has sufficient space, and the indicator light 5 at the entrance of the unloading hall 3 is off, indicating that the sludge bin 18 in the unloading hall has insufficient space. The indicator light 5 above the rolling door 8 is on, indicating that the sludge truck 1 can start unloading, and the indicator light 5 above the rolling door 8 is off, indicating that the unloading is completed and the sludge truck 1 can leave.

[0063] The control device 25 counts the free capacity of the sludge bin corresponding to each unloading hall 3, and after receiving the sludge load of the sludge truck 1, compares it with the free capacity of the sludge bin of each unloading hall 3 in turn. When the sludge load is less than or equal to the free capacity of the sludge bin of the current unloading hall, the indicator light 5 at the entrance of the current unloading hall lights up as an alternative unloading hall, otherwise, the indicator light 5 at the entrance of the current unloading hall goes out. The driver of the sludge truck 1 can select one from at least one alternative unloading hall as the target unloading hall. When the sludge truck 1 enters the target unloading hall, the control device 25 outputs the "sludge bin unloading" signal, and the indicator light 5 at the entrance of the target unloading hall goes out. After the control device 25 outputs the "start unloading" signal, the indicator light 5 above the rolling door 8 lights up and unloading starts. After unloading is completed, the sludge bin vacancy of the target unloading hall is updated, and the indicator light 5 above the rolling door 8 goes out. The indicator light 5 at the entrance of the target unloading hall remains off, waiting for the next sludge truck 1 to enter the site for allocation.

[0064] Preferably, the indicator light 5 has three colors. In this case, the indicator light 5 at the entrance of the unloading hall 3 and the indicator light 5 above the rolling door 8 can be controlled simultaneously. The three colors of red, green and yellow are used as an example for explanation:

[0065] The control device 25 counts the free amount of the sludge bin corresponding to each unloading hall 3, and after receiving the sludge load of the sludge truck 1, it compares it with the free amount of the sludge bin of each unloading hall 3 in turn. When the sludge load is less than or equal to the free amount of the sludge bin of the current unloading hall, the indicator light 5 at the entrance of the current unloading hall and the indicator light 5 above the rolling door 8 turn on green lights, as an alternative unloading hall, indicating that the sludge bin 18 in the current unloading hall has sufficient space, and the sludge truck 1 can choose the current unloading hall for unloading; on the contrary, when the sludge load is greater than the free amount of the sludge bin of the current unloading hall, the indicator light 5 at the entrance of the current unloading hall and the indicator light 5 above the rolling door 8 turn on red lights, indicating that the sludge bin 18 in the current unloading hall has insufficient space, and the sludge truck 1 cannot choose the current unloading hall. The driver of the sludge truck 1 can select one from at least one alternative unloading hall as the target unloading hall. After the sludge truck 1 enters the target unloading hall with the green light on, the control device 25 outputs the "sludge bin unloading" signal, the indicator light 5 at the entrance of the target unloading hall and the indicator light 5 above the rolling door 8 light up red, and after the control device 25 outputs the "start unloading" signal, the indicator light 5 at the entrance of the target unloading hall and the indicator light 5 above the rolling door 8 light up yellow, indicating that the sludge truck 1 can start unloading; after unloading is completed, the sludge bin vacancy of the target unloading hall is updated, and the indicator light 5 above the rolling door 8 goes out, indicating that the sludge truck 1 can start to leave the target unloading hall. At this time, the indicator light 5 at the entrance of the target unloading hall remains off, waiting for the next sludge truck 1 to enter the site.

[0066] In one embodiment, the sludge receiving device further includes a sludge discharge device, which is disposed below the sludge bin 18 and is communicatively connected to the control device 25 for discharging the sludge in the sludge bin 18 .

[0067] The sludge discharge device includes two unloading screws 23 and a gate valve 24 directly connected to the bottom of the sludge bin. The unloading screw 23 has no cover plate, and its inlet size is the entire screw length and width. When the sludge bin is discharged, the control device 25 controls the opening of the unloading screw 23 and the gate valve 24 to discharge the sludge. Setting two unloading screws 23 can not only process more sludge per unit time, speed up the discharge of sludge from the sludge bin, and improve the working efficiency of the entire sludge treatment system, but also can use another unloading screw 23 to continue working when a certain unloading screw 23 fails or needs maintenance, thereby ensuring the continuity of the sludge unloading operation, reducing the downtime caused by equipment failure, and effectively improving the reliability and stability of the system operation.

[0068] A flushing port is provided at the top of the sludge bin 18 and an emergency sewage outlet is provided at the bottom. The flushing port is connected to the tap water pipe 14. When the sludge bin 18 discharges the sludge inside it, the tap water pipe 14 is controlled to open to flush the sludge bin 18, and the emergency sewage outlet is opened to discharge the flushed sludge and sewage.

[0069] A hydraulic slide 19 is also provided at the bottom of the sludge bin 18, which is connected to the hydraulic station 20 through a hydraulic pipe 21. The hydraulic station 20 can feedback the running position of the hydraulic slide 19 to the control device 25 through a limit switch. After the control device 25 outputs the "sludge bin unloading" signal, the hydraulic slide 19 can be controlled to be opened. Driven by the hydraulic station 20, the hydraulic slide 19 can reciprocate at the bottom of the sludge bin 18, so that the sludge is evenly distributed in the sludge bin 18, ensuring the stability of sludge storage. When the sludge bin 18 needs to be discharged, the hydraulic slide 19 can also be controlled to be opened to exert a certain stirring and pushing effect on the sludge in the sludge bin 18, so that the sludge flows more smoothly to the discharge screw 23, further preventing the sludge from agglomerating in the sludge bin 18 or blocking the discharge channel, ensuring the efficient discharge process, and improving the overall efficiency of sludge treatment.

[0070] Whether to start sludge discharge is determined based on the current sludge bin free space and the set sludge free space value. When the control device 25 calculates that the current sludge bin free space is less than or equal to the set sludge free space value, it outputs a "start sludge discharge" signal, controls the opening of the discharge screw 23, the gate valve 24 and the hydraulic slide 19, and discharges the sludge in the sludge bin 18. During the sludge discharge process, the level meter 13 is controlled to detect the material level height in the sludge bin 18 in real time. When the level meter 13 shows that the material level height is 0, the control device 25 outputs a "sludge discharge end" signal, controls the closing of the discharge screw 23, the gate valve 24 and the hydraulic slide 19, and updates the sludge bin free space to the maximum capacity of the sludge bin 18. Then control to open the tap water pipe 14 to flush the sludge bin 18, and open the emergency sewage outlet to discharge the flushed sludge and sewage; when the control device 25 calculates that the current sludge bin free space is greater than the set sludge free value, the sludge bin free space of the unloading hall 3 is updated to the calculated current sludge bin free space.

[0071] In one embodiment, the sludge incoming receiving device further includes a vehicle washing device 4, which is disposed on the top of the unloading hall 3 and is communicatively connected to the control device 25 for washing the sludge vehicle 1 after unloading is completed.

[0072] The car washing device 4 is composed of a plurality of spray heads. After the control device 25 outputs the "unloading completion" signal, the spray heads are controlled to open to spray water mist to wash the sludge truck. After a certain period of time, the car washing device 4 is automatically closed. After the car washing is completed, the sludge truck 1 drives out of the unloading hall 3. The car washing time and the number of spray heads can be set as needed. For example, the car washing time is set to 30 seconds and 3 spray heads are set. This application does not make specific limitations on this.

[0073] like Figure 2 As shown, the present invention also provides an automatic control method for a sludge inlet receiving device, the method comprising:

[0074] The truck scale 2 weighs the sludge truck 1 to determine the sludge load of the sludge truck 1, and allocates a target unloading hall to the sludge truck 1 according to the sludge load, wherein one of the multiple unloading halls 3 is determined as the target unloading hall according to the current status of each of the unloading halls 3;

[0075] After the ground sensor coil 6 detects that the sludge truck 1 enters the target unloading hall, the rolling door 8, the air purification device and the sludge bin 18 are opened in sequence to start unloading;

[0076] Real-time detection of the sludge weight in the sludge bin 18. When it is detected that the sludge weight has not changed within a preset time, the current weight of the sludge bin is saved, and the added weight of the sludge bin is obtained according to the initial weight of the sludge bin and the current weight of the sludge bin. The sludge bin 18, the rolling door 8 and the air purification device are closed in sequence. The initial weight of the sludge bin is the weight of the sludge bin after the last unloading is completed.

[0077] After unloading is completed and the ground sensor coil 6 detects that the sludge truck 1 has exited the target unloading hall, the truck scale 2 re-weighs the sludge truck 1 to obtain the current weight of the sludge truck, and determines the actual sludge unloading amount according to the sludge load and the current weight of the sludge truck;

[0078] The unloading situation is determined according to the actual sludge unloading amount and the increased weight of the sludge bin.

[0079] After the unloading is completed, the control device 25 controls the initial weight of the sludge bin of the target unloading hall to be updated to the current weight of the sludge bin obtained by detection.

[0080] First, opening the rolling shutter door 8 and the air purification device can quickly form a negative pressure environment in the air collection hood 9 and the connected space, which can effectively prevent the odor in the sludge bin from spreading outward after the sludge bin 18 is opened, improve the efficiency of collecting and treating odor, and effectively reduce the pollution to the surrounding environment. Finally, closing the air purification device can effectively ensure that the odor remaining in the air collection hood 9 is fully treated, so that the concentration of harmful gases in the air is reduced to the minimum, reduce the risk of odor diffusion, and effectively protect the environment and the health of workers.

[0081] The time during which the sludge weight does not change is set in advance in the control device 25, and the present application does not limit the specific value. For example, it is set to 20 seconds. When the control device 25 does not receive the new sludge weight transmitted by the weighing module 22 within 20 seconds, the sludge weight is determined to be the current weight of the sludge bin, and the added weight of the sludge bin is saved and calculated based on the current weight of the sludge bin and the initial weight of the sludge bin, so as to determine the unloading situation in combination with the actual sludge unloading amount.

[0082] In one embodiment, determining one of the plurality of unloading halls 3 as the target unloading hall according to the current status of each of the unloading halls 3 comprises:

[0083] If the free volume of the sludge bin of the current unloading hall is greater than or equal to the sludge load, the indicator light 5 of the current unloading hall lights up, indicating that the current unloading hall is used as an alternative unloading hall, otherwise, the indicator light 5 of the current unloading hall goes out;

[0084] One is determined from at least one of the candidate unloading halls as the target unloading hall.

[0085] For example, there are five unloading halls 3 (unloading hall A, unloading hall B, unloading hall C, unloading hall D, unloading hall E) in the sludge plant, and the free space of the sludge bins is a, b, c, d, e respectively, and the sludge load of the sludge truck 18 is x. The control device 25 compares the size of a, b, c, d, e with x respectively, where a>x, b>d, e>x. <x、c<x、d=x、e> x, then the indicator lights 5 of the unloading hall A, unloading hall D and unloading hall E light up, indicating that the sludge bin space in the unloading hall A, unloading hall D and unloading hall E is sufficient, and can be used as alternative unloading halls for the driver of the sludge truck 1 to choose, and the driver can randomly select one as the target unloading hall to enter; the indicator lights of the unloading hall B and unloading hall C are off, indicating that the sludge bin space in the unloading hall B and unloading hall C is insufficient, and the sludge truck 1 cannot enter. In one embodiment, the method further includes:

[0086] When the sludge truck 1 enters the target unloading hall, the indicator light 5 corresponding to the target unloading hall goes out;

[0087] After the sludge truck 1 completes unloading and exits the target unloading hall, the indicator light 5 of the target unloading hall remains off, waiting for the next distribution.

[0088] In one embodiment, the method further comprises:

[0089] After the unloading is completed, the material level height in the sludge bin is detected, and the current sludge bin free space is determined according to the material level height, and when the current sludge bin free space is less than or equal to the set sludge free space value, the sludge discharge device is controlled to open to discharge the sludge in the sludge bin.

[0090] Among them, when the current sludge bin free space is greater than the set sludge bin free space value, the sludge bin free space of the unloading hall is updated to the calculated current sludge bin free space.

[0091] In one embodiment, the determining the unloading condition according to the actual sludge unloading amount and the increased weight of the sludge bin includes:

[0092] Determine the sludge difference between the actual sludge unloading amount and the increased weight of the sludge bin;

[0093] When the sludge difference is less than or equal to the set difference, it means that the error is within a reasonable range, and a vehicle departure signal is output;

[0094] When the sludge difference is greater than the set difference, an alarm signal is output and a detection personnel detects whether there is a fault.

[0095] In one embodiment, the method further comprises starting a vehicle washing device 4 to clean the sludge vehicle 1 after unloading is completed.

[0096] Taking the case where there are three unloading halls 3 in a sludge plant and the indicator lights 4 have three colors of red, green and blue as an example, the method flow of the device of the present application is described:

[0097] The three unloading halls 3 correspond to three sludge bins 18, and each sludge bin 18 is provided with two sets of three-color indicator lights 5. The sludge truck 1 will pass the truck scale 2 when driving along the planned route of the sludge plant. The truck scale 2 weighs the sludge truck 18 and uploads the weighing data m1 and the sludge truck data to the control device 25. The control device 25 outputs a "vehicle entry" signal. At the same time, it calculates and saves the sludge load m0 of the current sludge truck 1 in combination with the dead weight of the sludge truck. The control device 25 counts the sludge bin vacancies corresponding to the three unloading halls 3, and after comparing them with the sludge load m0 in turn, the indicator lights 5 at the entrances of the No. 1 unloading hall 3 and the No. 3 unloading hall 3 turn on green, and the indicator lights 5 at the entrance of the No. 2 unloading hall 3 turn on red (indicating that the sludge bins 18 corresponding to the No. 1 unloading hall 3 and the No. 3 unloading hall 3 have space to accommodate sludge with a sludge load of m0, and the sludge bins 18 corresponding to the No. 2 unloading hall 3 have insufficient space). The driver of the sludge truck 1 selects and drives into the No. 1 unloading hall 3, and after the ground sensor coil 6 at the bottom of the No. 1 unloading hall 3 is triggered, the control device 25 outputs a "sludge bin unloading" signal. At this time, the indicator light 5 at the entrance of the No. 1 unloading hall 3 and the indicator light 5 above the rolling door 8 light up red, and the control device 25 delays opening the rolling door 8, air curtain 7, odor fan 16 and hydraulic bin cover 10 of the No. 1 unloading hall 3. After the hydraulic bin cover 10 is opened to a certain position, it outputs a "start unloading" signal. At this time, the indicator light 5 at the entrance of the unloading hall 3 and the indicator light 5 above the rolling door 8 light up yellow, indicating that the sludge truck 2 can start unloading. The driver operates the sludge truck 2 to start unloading according to the instruction of the indicator light 5. The sludge will pass through the grille 11 before entering the sludge bin 18 to screen out large impurities in the sludge and prevent them from falling into the sludge bin 18. The weighing module 22 detects the sludge weight in real time and sends its data to the control device 25. When the control device 25 does not receive the new sludge weight transmitted by the weighing module 22 within 20 seconds, it determines that the sludge weight is the current weight of the sludge bin, saves it and calculates the increased weight m3 of the sludge bin according to the current weight of the sludge bin, and the control device 25 outputs a "unloading completion" signal to control the closing of the hydraulic bin cover 10, the rolling door 8, and the air filter 10 in sequence. Curtain 7 and odor blower 16, the material level meter 13 re-detects the current material level height of the sludge bin 18, and transmits the current material level height to the control device 25, and the control device 25 calculates the current sludge bin free space. When the control device 25 calculates that the current sludge bin free space is less than or equal to the set sludge free space value, it outputs a "start sludge discharge" signal, controls the opening of the unloading screw 23, the gate valve 24 and the hydraulic slide 19, and discharges the sludge in the sludge bin. During the sludge discharge process, the material level meter 13 is controlled to detect the material level height in the sludge bin in real time. When the material level meter 13 shows that the material level height is 0, the control device 25 outputs a "sludge discharge end" signal, controls the closing of the unloading screw 23, the gate valve 24 and the hydraulic slide 19, and updates the sludge bin free space to the maximum capacity of the sludge bin 18.Then control to open the tap water pipe 14 to flush the sludge bin 18, and open the emergency sewage outlet to discharge the flushed sludge and sewage; when the control device 25 calculates that the current sludge bin free space is greater than the set sludge free value, the sludge bin free space of the unloading hall 3 is updated to the calculated current sludge bin free space. Then the control device 25 controls the opening of the spray head to spray water mist to clean the sludge truck. After 30 seconds, the car washing device 4 is automatically closed. The car washing is completed, and the indicator light 5 above the rolling door 8 goes out, prompting the sludge truck 1 to start and leave the unloading hall 3. The sludge truck 1 drives out of the unloading hall 3 and passes the truck scale 2 again along the planned route. The truck scale 2 weighs the sludge truck 1 again to obtain the current weight m4 of the sludge truck. The control device 25 determines the actual sludge unloading amount m5 according to the sludge load and the current weight m4 of the sludge truck, and calculates the sludge difference in combination with the increased weight m3 of the sludge bin. If the sludge difference is less than or equal to the set difference, it means that the error is within a reasonable range, and a "vehicle departure" signal is output, and the sludge truck 1 leaves the sludge plant; if the sludge difference is greater than the set difference, an "alarm" signal is output, and the inspection personnel inspect whether there is any fault in the equipment in the No. 1 unloading hall 3.

[0098] Among them, during the entire unloading process, the gas concentration detection device 12 is always in the open state to detect the concentration of toxic gases such as H2S and CH4 in real time, and sends an alarm to the control device 25 when the gas concentration exceeds the standard. If the current sludge truck 1 is unloading, the control device 25 will issue an alarm and control to stop unloading, close the sludge bin 18 and the rolling door 8, and keep the air purification device turned on to extract the gas in the gas collecting hood 9 until the gas concentration returns to below the normal limit and then restart unloading; if the current sludge truck 1 has completed unloading, the control device 25 will turn on the air purification device to extract the gas in the gas collecting hood 9 until the gas concentration returns to below the normal limit.

[0099] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0100] Furthermore, persons of ordinary skill in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present invention and to form different embodiments.

[0101] It will be appreciated by those skilled in the art that, although the present invention has been described with reference to exemplary embodiments, various changes may be made and its elements may be replaced with equivalents without departing from the scope of the present invention. In addition, many modifications may be made to adapt specific situations or materials to the teachings of the present invention without departing from the essential scope of the present invention.

Claims

1. A sludge receiving device, characterized in that: include: Truck scale, which is installed at the entrance of the sludge plant to weigh the sludge truck; The unloading hall has a ground sensing coil at the bottom; An air collecting hood, which is arranged at one side of the unloading hall and communicated with the unloading hall; A rolling door is provided at the connection between the unloading hall and the gas collecting hood, and an air curtain is provided on the side close to the unloading hall; A sludge bin is arranged below the gas collecting hood, with a sludge inlet and a material level meter at the top and a weighing module at the bottom, wherein the sludge inlet is provided with a hydraulic bin cover and a grille in sequence from top to bottom, and the gas collecting hood is connected with the sludge bin through the sludge inlet; An air purification device, which is arranged outside the unloading hall and is connected to the air collecting hood and the sludge bin; The control device is communicatively connected with the truck scale, the ground sensing coil, the rolling door, the material level meter, the air purification device and the weighing module to control the unloading process of the sludge truck.

2. The sludge receiving device according to claim 1, characterized in that: The unloading hall is provided with two sets of indicator lights, which are respectively arranged at the entrance of the unloading hall and above the rolling door, and are communicatively connected with the control device to indicate the current status of the unloading hall.

3. The sludge receiving device according to claim 1, characterized in that: The sludge incoming receiving device also includes a sludge discharge device, which is arranged below the sludge bin and is communicatively connected with the control device for discharging the sludge in the sludge bin.

4. The sludge receiving device according to claim 1, characterized in that: The sludge incoming receiving device also includes a car washing device, which is arranged on the top of the unloading hall and is communicatively connected with the control device for washing the sludge truck after unloading is completed.

5. An automatic control method using the sludge receiving device according to any one of claims 1 to 4, characterized in that: The method comprises: The truck scale weighs the sludge truck to determine the sludge load of the sludge truck, and allocates a target unloading hall to the sludge truck according to the sludge load, wherein one of the multiple unloading halls is determined as the target unloading hall according to the current status of each of the unloading halls; After the ground sensor coil detects that the sludge truck has entered the target unloading hall, the rolling door, air purification device and sludge bin are opened in sequence to start unloading; Real-time detection of the sludge weight in the sludge bin. When it is detected that the sludge weight has not changed within a preset time, the current weight of the sludge bin is saved, and the added weight of the sludge bin is obtained according to the initial weight of the sludge bin and the current weight of the sludge bin. The sludge bin, the rolling door and the air purification device are closed in sequence. The initial weight of the sludge bin is the weight of the sludge bin after the last unloading is completed. After unloading is completed and the ground sensor coil detects that the sludge truck has exited the target unloading hall, the truck scale re-weighs the sludge truck to obtain the current weight of the sludge truck, and determines the actual sludge unloading amount according to the sludge load and the current weight of the sludge truck; The unloading situation is determined according to the actual sludge unloading amount and the increased weight of the sludge bin.

6. The automatic control method according to claim 5, characterized in that: The step of determining one of the plurality of unloading halls as the target unloading hall according to the current status of each of the unloading halls comprises: If the free volume of the sludge bin of the current unloading hall is greater than or equal to the sludge load, the indicator light of the current unloading hall lights up, indicating that the current unloading hall is used as an alternative unloading hall; otherwise, the indicator light of the current unloading hall goes out; One is determined from at least one of the candidate unloading halls as the target unloading hall.

7. The automatic control method according to claim 6, characterized in that: The method further comprises: When the sludge truck enters the target unloading hall, the indicator light corresponding to the target unloading hall goes out; After the sludge truck completes unloading and exits the target unloading hall, the indicator light of the target unloading hall remains off, waiting for the next distribution.

8. The automatic control method according to claim 5, characterized in that: The method further comprises: After the unloading is completed, the material level height in the sludge bin is detected, and the current sludge bin free space is determined according to the material level height, and when the current sludge bin free space is less than or equal to the set sludge free space value, the sludge discharge device is controlled to open to discharge the sludge in the sludge bin.

9. The automatic control method according to claim 5, characterized in that: Determining the unloading situation according to the actual sludge unloading amount and the increased weight of the sludge bin includes: Determine the sludge difference between the actual sludge unloading amount and the increased weight of the sludge bin; When the sludge difference is less than or equal to the set difference, it means that the error is within a reasonable range, and a vehicle departure signal is output; When the sludge difference is greater than the set difference, an alarm signal is output and a detection personnel detects whether there is a fault.

10. The automatic control method according to claim 5, characterized in that: The method further comprises starting a vehicle washing device to clean the sludge vehicle after unloading is completed.

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