Discharging conveying device and solid-liquid separation production line capable of detecting abnormal leakage of centrifuge

Abstract

The present invention discloses a discharge conveying device capable of detecting abnormal leakage of a centrifuge, comprising a conveyor, a liquid level detection device and a discharge control device, wherein the conveyor is used to receive slurry or solid material with a qualified liquid content output by the centrifuge, the liquid level detection device is used to detect the slurry in the conveyor and send a detection signal, and the discharge control device can discharge the slurry in the conveyor or transport the solid material with a qualified liquid content in the conveyor to the next stage process production equipment. The present invention also discloses a solid-liquid separation production line, comprising a centrifuge and the discharge conveying device capable of detecting abnormal leakage of a centrifuge, the conveyor is connected to the centrifuge, and the conveyor can also be connected to the next stage process production equipment. The present invention can automatically detect whether the centrifuge has abnormal leakage, can discharge solid material with unqualified liquid content, and is conducive to ensuring production safety.

Description

Technical Field

[0001] The invention relates to material conveying equipment, in particular to a material discharging conveying device capable of detecting abnormal leakage of a centrifuge and a solid-liquid separation production line. Background Art

[0002] As a deliquidation device, the centrifuge has become the core equipment of the solid-liquid separation and elutriation system. It is widely used in food, lithium battery positive and negative electrode materials, chemical industry, environmental protection wastewater treatment and other industries. Since the centrifuge must add slurry or elutriation liquid when the equipment is operating normally, it can separate solids and liquids normally. Therefore, when the equipment fails to operate, or the program does not start the equipment, slurry or elutriation liquid is added, and the slurry will flow out directly through the solid material discharge port. It directly causes the liquid content of the discharged product to increase, and automated production will form a large number of unqualified products, causing significant losses. The solid raw materials separated by the centrifuge of many automated production lines will then enter the drying equipment for drying. If the slurry is not controlled in time and enters the drying equipment, a large amount of hot steam will be generated in the drying equipment, causing production accidents. It will not only cause devastating damage to the equipment, but also threaten the personal safety of production personnel. These problems have become a major obstacle to the realization of production line automation and seriously threaten industrial safety production. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide a discharging and conveying device capable of detecting abnormal leakage of a centrifuge, which can discharge solid materials with unqualified liquid content, thereby ensuring production safety.

[0004] A second object of the present invention is to provide a solid-liquid separation production line having the above-mentioned unloading and conveying device.

[0005] One of the purposes of the present invention is achieved by the following technical solution:

[0006] A discharging and conveying device capable of detecting abnormal leakage of a centrifuge comprises a conveyor, a liquid level detection device and a discharge control device, wherein the conveyor is used to receive slurry or solid material with a qualified liquid content output by the centrifuge, the liquid level detection device is used to detect the slurry in the conveyor and send a detection signal, and the discharge control device can discharge the slurry in the conveyor or transport the solid material with a qualified liquid content in the conveyor to the next process production equipment.

[0007] Furthermore, the conveyor is arranged to be inclined relative to the ground.

[0008] Furthermore, the unloading and conveying device that can detect abnormal leakage of the centrifuge also includes an emergency drainage device, the input end of the emergency drainage device is connected to the inside of the conveyor, the liquid level detection device is connected to the inside of the conveyor, and the output end of the emergency drainage device is used to discharge the liquid material in the slurry in the conveyor.

[0009] Furthermore, the unloading conveying device that can detect abnormal leakage of the centrifuge also includes a recovery device. The conveyor is provided with a feed port and a discharge port. The feed port is used to connect with the centrifuge, and the discharge port is connected to a discharge control device. The discharge control device can discharge solid materials with unqualified liquid content in the conveyor to the recovery device.

[0010] Furthermore, the discharge control device includes a discharge control valve and a discharge port material distribution control valve, the discharge control valve is connected to the discharge port and is used to limit the opening or closing of the discharge port, the input end of the discharge port material distribution control valve is connected to the output end of the discharge control valve, the discharge port material distribution control valve is provided with a qualified solid material output port and an unqualified solid material output port, the unqualified solid material output port is connected to a recovery device, and the qualified solid material output port is used to connect to the production equipment of the next process.

[0011] Furthermore, the conveyor is also provided with a residual liquid removal port for removing residual liquid material in the conveyor.

[0012] Furthermore, the conveyor is provided with an inspection hole.

[0013] Furthermore, the levels of the residual liquid removal port, the emergency liquid discharge device and the inspection hole increase in sequence.

[0014] The second object of the present invention is achieved by adopting the following technical solution:

[0015] The solid-liquid separation production line comprises a centrifuge and a discharging conveying device capable of detecting abnormal leakage of the centrifuge. The conveyor is connected to the centrifuge and can also be connected to production equipment in the next process.

[0016] Furthermore, the solid-liquid separation production line also includes an inlet control valve, which is connected to the input end of the centrifuge and is used to limit the slurry from entering the centrifuge.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The unloading and conveying device capable of detecting abnormal leakage of the centrifuge is provided with a conveyor, a liquid level detection device and a discharge control device. When an abnormality occurs in the centrifuge, the liquid level detection device will quickly detect the presence of slurry in the conveyor, and the discharge control device will convey the slurry to the recovery device for recycling, thereby effectively preventing the slurry from entering the production equipment of the next process. In addition, the unloading and conveying device is also provided with an emergency liquid discharge device with an automatic emergency liquid discharge function, which can prevent accidents caused by electrical failures, and can also effectively discharge solid materials with unqualified liquid content, thereby improving product quality and production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a solid-liquid separation production line in an embodiment of the present invention;

[0020] In the figure: 1. Inlet control valve; 2. Centrifuge; 3. Conveyor; 4. Emergency drain device; 5. Liquid level detection device; 6. Discharge control valve; 7. Discharge port material distribution control valve; 8. Recovery device; 9. PLC control module; 10. Central control system; 11. Electrical operation box; 12. Production equipment for the next process; 13. Residual liquid removal port; 14. Inspection hole; 15. Motor. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] like Figure 1 As shown, an embodiment of the present invention provides a solid-liquid separation production line, which includes a centrifuge 2 and a discharge conveying device capable of detecting abnormal liquid leakage of the centrifuge 2 .

[0023] Among them, the unloading conveying device of this embodiment that can detect abnormal leakage of the centrifuge 2 includes a conveyor 3, a liquid level detection device 5 and a discharge control device. The conveyor 3 is connected to the centrifuge 2, and the conveyor 3 can also be connected to the downstream process production equipment 12. The conveyor 3 of this embodiment is used to receive the slurry output by the centrifuge 2 or the solid material with a qualified liquid content, the liquid level detection device 5 is used to detect the slurry in the conveyor 3 and send a detection signal, and the discharge control device can discharge the slurry in the conveyor 3 or transport the solid material with a qualified liquid content in the conveyor 3 to the downstream process production equipment 12.

[0024] In this embodiment, the liquid level detection device 5 may include a sensor, etc., and the slurry in the conveyor 3 is detected by the sensor.

[0025] Specifically, the solid-liquid separation production line further includes an inlet control valve 1, which is connected to the input end of the centrifuge 2 and is used to limit the slurry from entering the centrifuge 2. More specifically, the inlet control valve 1 adopts a pneumatic valve that can be applied to the slurry pipeline, which is conducive to controlling the state of the input end of the centrifuge 2.

[0026] As a preferred implementation in this embodiment, the conveyor 3 is a conveyor 3 with a certain inclination angle, which is inclined relative to the ground.

[0027] It should be noted that the unloading conveying device that can detect abnormal leakage of the centrifuge 2 also includes a recovery device 8. The conveyor 3 is provided with a feed port and a discharge port. The feed port is used to connect with the centrifuge 2, and the discharge port is connected to the discharge control device. The discharge control device can discharge the slurry in the conveyor 3 to the recovery device 8.

[0028] In this embodiment, the recovery device 8 is a recovery container, which is used to collect solid materials and slurries with unqualified liquid content for recycling.

[0029] It should be emphasized that the discharge control device includes a discharge control valve 6 and a discharge port distribution control valve 7. The discharge control valve 6 is connected to the discharge port and is used to limit the opening or closing of the discharge port. The input end of the discharge port distribution control valve 7 is connected to the output end of the discharge control valve 6. The discharge port distribution control valve 7 is provided with a qualified solid material output port and an unqualified solid material output port. The unqualified solid material output port is connected to the recovery device 8 so that the solid material with unqualified liquid content in the slurry can be transported to the recovery device 8. The qualified solid material output port is used to connect to the production equipment 12 of the next process so that the qualified solid can be transported to the next process for further processing.

[0030] In this embodiment, the discharge control valve 6 and the discharge outlet material distribution control valve 7 are both composed of pneumatic valves and pipelines. Specifically, the input end of the discharge outlet material distribution control valve 7 is provided with a port a, the qualified solid material output port is b, and the unqualified solid material output port is c. When in use, the opening and closing of port a and port b, and port a and port c can be switched according to the material conditions in the conveyor 3, and the materials can be respectively transported to the recovery device 8 or the next process production equipment 12.

[0031] As a preferred embodiment, the unloading and conveying device that can detect abnormal leakage of the centrifuge 2 also includes an emergency drainage device 4, the input end of the emergency drainage device 4 is connected to the inside of the conveyor 3, the liquid level detection device 5 is connected to the inside of the conveyor 3, and the output end of the emergency drainage device 4 is connected to the recovery device 8, which is used to transport the liquid material in the slurry in the conveyor 3 to the recovery device 8.

[0032] In this embodiment, the emergency liquid discharge device 4 mainly transports the liquid material to the recovery device 8 through a pipeline, thereby discharging the liquid material outside the conveyor 3 to prevent the liquid from flowing into the next process production equipment 12.

[0033] It is worth mentioning that the conveyor 3 is also provided with a residual liquid removal port 13 for removing residual liquid material in the conveyor 3 .

[0034] In addition, an inspection hole 14 is also provided on the conveyor 3 .

[0035] In a more preferred embodiment, the levels of the residual liquid removal port 13, the emergency drain device 4 and the inspection hole 14 increase in sequence.

[0036] In this embodiment, the solid-liquid separation production line also includes a PLC control module 9, a central control system 10 and an electrical operation box 11. The liquid level detection device 5 is electrically connected to the PLC control module 9. The liquid level detection device 5 can automatically detect whether there is liquid material in the conveyor 3 and is used to send a detection signal. The PLC control module 9 is used to receive the detection signal and can automatically control the working state of the above-mentioned control valves and the conveyor 3; and realize signal interaction with the central control system. The central control system 10 can monitor the automated production line in real time, send command parameters to the PLC control module 9 and receive feedback signals from the PLC control module 9. The electrical operation box 11 is provided with a mechanical button, and the production personnel can send instructions to the PLC control module 9 through its mechanical button at the equipment site, thereby controlling the working state of each control valve and the conveyor 3 through the PLC control module 9. Specifically, the mechanical button can include an emergency stop button, a discharge button and a reset button.

[0037] Under normal production conditions, the central control system 10 instructs the PLC control module 9 to open the above control valves, and the centrifuge 2 and the conveyor 3 start to operate. After the inlet control valve 1 is opened, the slurry flows into the centrifuge 2 through the pipeline. The operation of the centrifuge 2 separates the slurry into liquid material and solid material with a qualified liquid content through centrifugal force. The liquid material is discharged through the liquid material pipeline, and the solid material is discharged to the conveyor 3 through the solid material discharge port of the centrifuge 2. The conveyor 3 operates to transport the solid material to the discharge control valve 6. The discharge control valve 6 is opened, and the a port and the b port of the discharge outlet material distribution control valve 7 are connected, and the a port and the c port are closed. The solid material flows through the pipeline through the discharge control valve 6 and the b port of the discharge outlet material distribution control valve 7 to enter the next process production equipment 12.

[0038] When an abnormality occurs in the centrifuge 2, the slurry entering the centrifuge 2 will directly enter the conveyor 3 from the solid material discharge port of the centrifuge 2, and the liquid level detection device 5 will quickly detect the presence of slurry in the conveyor 3 and send a detection signal to the PLC control module 9. The PLC control module 9 feeds back an alarm signal to the central control system 10, and the central control system 10 immediately notifies the personnel to check the equipment. At the same time, the PLC control module 9 immediately closes the inlet control valve 1 to prevent the external slurry from continuing to enter the centrifuge 2. And turn off the motor 15 of the conveyor 3, and the conveyor 3 will not continue to transport the solid material with unqualified liquid content to the equipment of the next process. At the same time, the discharge control valve 6 is also closed to ensure that the liquid material in the slurry in the conveyor 3 and the solid material with unqualified liquid content will not enter the production equipment 12 of the next process, so as to ensure the product qualification rate and equipment safety of the next process.

[0039] The liquid in the slurry flowing into the conveyor 3 will overflow and be transported to the recovery device 8 through the emergency drain device 4 for recycling. The conveyor 3 is designed in an inclined form. When the slurry enters the conveyor 3, it will rise horizontally from the bottom of the conveyor 3 according to the characteristics of the liquid. When the height reaches Figure 1 When the liquid level line H is reached, the slurry will automatically flow out of the emergency drain device 4 and be transported to the recovery device 8 through the pipeline for recycling. In this way, it can effectively prevent accidents caused by (the inlet control valve 1, the liquid level detection device 5, the discharge control valve 6, etc.) failing to detect the liquid in the slurry in time and close the valve due to electrical failure.

[0040] After the production personnel have inspected and maintained the faulty equipment on site, they can press the unloading button in the electrical operation box 11 to start the unloading of solid materials with unqualified liquid content. The electrical operation box 11 feeds back the command to the PLC control module 9, and the PLC control module 9 automatically detects the detection signal sent by the liquid level detection device 5. If the liquid level detection device 5 still detects that there is slurry in the conveyor 3, the PLC control module 9 will not execute the unloading program. The risk of the valve opening during unloading, causing the liquid material to flow out of the conveyor 3 and enter the next stage production equipment 12, can be effectively suppressed. Until the liquid level detection device 5 detects that there is no liquid material in the conveyor 3 (that is, the liquid material has been completely discharged from the emergency drain device 4), and feeds back a signal to the PLC control module 9, the PLC control module 9 will issue a discharge command to start the conveyor 3, open the discharge control valve 6, and close the a and b ports of the discharge port distribution control valve 7, and connect the a and c ports. The conveyor 3 will deliver the solid material with unqualified liquid content, which will flow through the discharge control valve 6 and the c port of the discharge port distribution control valve 7 through the pipeline, and enter the recovery device 8 for recycling.

[0041] The production staff can observe whether all the solid materials have been discharged through the inspection hole 14 on the conveyor 3. If there is residual liquid, the production staff can open the residual liquid removal port 13 of the conveyor 3 to discharge the residual liquid material. When all the solid materials and residual liquid materials are discharged, the residual liquid removal port 13 is manually closed, and the reset button is pressed in the electrical operation box 11. The command is fed back to the PLC control module 9, and the PLC control module 9 closes the conveyor 3, the discharge control valve 6, and connects the a port and the b port of the discharge port distribution control valve 7, and disconnects the a port and the c port. All equipment is restored to the waiting state for production, and when the central control system 10 issues a production instruction, all equipment can be restored to the normal production state to realize automated production.

[0042] In summary, the solid-liquid separation production line in the present invention is equipped with a conveyor 3, a liquid level detection device 5, an emergency liquid discharge device 4, a discharge control valve 6, a discharge port dispensing valve, and an inlet control valve 1. Through PLC control and interaction with the central control system 10, the on-site status can be monitored in real time. When the slurry flows into the conveyor 3, the liquid level detection device 5 automatically detects the slurry and feeds back the detection signal to the PLC control module 9. The PLC control module 9 closes the inlet control valve 1 and the discharge control valve 6, stops the operation of the conveyor 3, and the liquid material in the slurry is discharged to the recovery device 8 through the emergency liquid discharge device 4 to prevent unqualified materials from entering the next stage of production. At the same time, the PLC control module 9 will feed back the alarm signal to the central control system 10 to notify the production personnel to check the equipment. In this embodiment, the unloading conveying device that can detect abnormal leakage of the centrifuge 2 can be applied to various solid-liquid separation and elutriation automation production lines. Real-time monitoring by the central control system 10 saves on-site labor costs. At the same time, it can avoid the production of unqualified products due to untimely manual discovery and reduce losses. Prevent accidents and ensure the safety of personnel and equipment.

[0043] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A discharging and conveying device capable of detecting abnormal leakage of a centrifuge, characterized in that: It includes a conveyor, a liquid level detection device and a discharge control device. The conveyor is used to receive the slurry or solid material with a qualified liquid content output by the centrifuge. The liquid level detection device is used to detect the slurry in the conveyor and send a detection signal. The discharge control device can discharge the slurry in the conveyor or transport the solid material with a qualified liquid content in the conveyor to the next process production equipment. It also includes an emergency liquid discharge device, the input end of which is connected to the inside of the conveyor, the liquid level detection device is connected to the inside of the conveyor, and the output end of the emergency liquid discharge device is used to discharge the liquid material in the slurry in the conveyor; The conveyor is arranged obliquely relative to the ground, and is provided with a feed port and a discharge port, wherein the feed port is used to be connected to the centrifuge, and the discharge port is connected to the discharge control device, and the conveyor is also provided with a residual liquid removal port for removing residual liquid material in the conveyor; The discharge control device comprises a discharge control valve and a discharge port material distribution control valve, wherein the discharge control valve is connected to the discharge port and is used to limit the opening or closing of the discharge port, and the input end of the discharge port material distribution control valve is connected to the output end of the discharge control valve; The unloading and conveying device capable of detecting abnormal leakage of a centrifuge also includes a recovery device. The discharge control device can discharge solid materials with unqualified liquid content in the conveyor to the recovery device. The discharge port material distribution control valve is provided with a qualified solid material output port and an unqualified solid material output port. The unqualified solid material output port is connected to the recovery device, and the qualified solid material output port is used to be connected to the production equipment of the next process.

2. The unloading and conveying device capable of detecting abnormal leakage of a centrifuge according to claim 1, characterized in that: The conveyor is also provided with an inspection hole.

3. The unloading and conveying device capable of detecting abnormal leakage of a centrifuge according to claim 2, characterized in that: The levels of the residual liquid removal port, the emergency liquid discharge device and the inspection hole increase in sequence.

4. Solid-liquid separation production line, characterized by: It comprises a centrifuge and a discharging conveying device capable of detecting abnormal leakage of the centrifuge as described in any one of claims 1 to 3, wherein the conveyor is connected to the centrifuge and can also be connected to production equipment in the next process.

5. The solid-liquid separation production line according to claim 4, characterized in that: The solid-liquid separation production line also includes an inlet control valve, which is connected to the input end of the centrifuge and is used to limit the slurry from entering the centrifuge.

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