CN220453422U

CN220453422U - Safe feeding system

Info

Publication number: CN220453422U
Application number: CN202321813390.5U
Authority: CN
Inventors: 任磊; 申晨; 郑伟超; 朱东义; 陆伟; 崔征
Original assignee: Kaifeng Bokai Biochemical Co ltd
Current assignee: Kaifeng Bokai Biochemical Co ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2024-02-06
Anticipated expiration: 2033-07-11

Abstract

The utility model provides a safe feeding system, which comprises a reaction kettle, a material tank, a material feeding device, a valve, a metering tank, an overflow tank, a pressure transmitter, a flow transmitter, a liquid level transmitter, an alarm device and an information processor, wherein the pressure transmitter, the flow transmitter and the liquid level transmitter are used as detection devices for detecting pressure, flow and liquid level conditions, transmitting signals to the information processor, and transmitting signals to the alarm device for alarming when abnormality occurs through analysis and judgment of the information processor, and transmitting signals to the material feeding device for closing or slowing down feeding. The utility model provides a safe feeding system, which can solve the safety problem of the feeding system by multiple protection.

Description

Safe feeding system

Technical Field

The utility model relates to the technical field of feeding systems, in particular to a safe feeding system.

Background

Along with the development of the industrialization level in China, the automation requirement of chemical enterprises on production equipment is higher and higher, and the production efficiency can be effectively improved by the automation equipment through system control, so that the stable production quality is ensured. However, due to the special production in the chemical industry, various chemical substances are involved in the feeding process, so that the feeding process has higher danger, and if the processing is not good, safety accidents are very easy to cause, so that the requirement of an automatic system of the feeding equipment on safety is most important.

The Chinese patent document with the application number of 2015200423792 discloses an oil tank high-liquid-level automatic-stopping oiling interlocking control alarm system, which comprises an oil tank, a central controller, an oil supply system device, a relay, an alarm device, a liquid level transmitter and a magnetic flap liquid level meter, wherein the central controller is respectively connected with the oil supply system device, the relay, the liquid level transmitter and the magnetic flap liquid level meter, and the relay is connected with the alarm device; the liquid level transmitter and the magnetic turning plate liquid level meter are arranged on the oiling agent tank; the oil supply system device is connected with the oil agent tank. During oil supply, the magnetic flap level gauge and the liquid level transmitter are used for measuring, and measurement data are transmitted to the central controller. When the oil in the oil tank is higher than a preset value, the central controller controls the oil supply system device to stop oiling so as to prevent the oil from overflowing out of the oil tank, and meanwhile, the central controller controls the relay to give an electric shock alarm. When the oil agent is used for a period of time and is lower than a preset value, the central controller controls the relay to give an electric shock alarm.

In the scheme, only one protection method is used for protecting the oiling process of the oiling agent tank, and when the magnetic flap liquid level meter fails or a circuit goes wrong, a signal cannot be transmitted into the control system, alarm reminding and stopping work cannot be carried out, and the protection method is quite single.

Disclosure of Invention

In view of this, the present utility model provides a safe feeding system, which can solve the safety problem of the feeding system by multiple protection.

In order to achieve the aim, the utility model provides a safe feeding system, which comprises a reaction kettle and is characterized by further comprising a raw material tank, a feeding device, a control valve, a metering tank, an overflow tank, a pressure transmitter, a flow transmitter, a liquid level detection device, an alarm device and an information processor;

the pressure transmitter is arranged on the main pipeline between the feeding device and the metering tank and is used for detecting the pressure of the pipeline and transmitting the pressure of the pipeline to the information processor;

the flow transmitters are respectively arranged on a main pipeline between the feeding device and the metering tank, each branch pipeline between the feeding device and the metering tank and the outlet of the overflow tank and are respectively used for detecting the discharge flow of the raw material tank, the feed flow of the metering tank and the discharge flow of the overflow tank and transmitting the flows of the raw material tank, the metering tank and the overflow tank to the information processor;

the liquid level detection device is respectively arranged in the raw material tank, the metering tank and the overflow tank and is respectively used for detecting the liquid levels of the raw material tank, the metering tank and the overflow tank and transmitting the liquid levels to the information processor;

and the information processor is used for analyzing and processing the liquid level, the flow and the pressure according to the sequence of the liquid level, the flow and the pressure when the pressure, the flow and the liquid level are larger or smaller than a preset range, sending an alarm indication to the alarm device, sending an indication for slowing down feeding to the feeding device and sending an indication for closing to the valve.

Optionally, the feeding device comprises a feeding pump, a check valve and a motor, wherein a control valve is arranged at an inlet and an outlet of the feeding pump, the check valve is arranged between the feeding pump and the pressure transmitter, the motor receives a signal transmitted by the information processor, and the motor is used for closing or slowing down the operation of the feeding pump.

Optionally, the feeding device comprises two feeding pumps connected in parallel.

Optionally, the feed pump includes a canned motor pump, a magnetic pump, a centrifugal pump, a diaphragm pump, and the like.

Optionally, the liquid level detection device comprises a liquid level transmitter and a liquid level meter.

Optionally, the liquid level meter comprises a magnetic flap liquid level meter, a magnetic floating ball liquid level meter, a steel belt liquid level meter, an ultrasonic liquid level meter, a radio frequency admittance liquid level meter, a magnetostriction liquid level meter, a throw-in liquid level meter and a radar liquid level meter.

Optionally, the metering tank is provided with the magnetic floating ball level gauge and the magnetic flap level gauge.

Optionally, the reaction kettles and the metering tanks are correspondingly grouped in number, and each group is connected in parallel.

Optionally, the automatic feeding device further comprises a manual device, wherein the manual device controls the feeding device step by step and the control valve realizes interlocking control.

Optionally, the control valve includes a dynamic valve, an electric valve, a servo valve, and the like.

Optionally, a quick cut-off valve is arranged at the inlet or outlet of the raw material tank, the metering tank, the reaction kettle and the overflow tank.

Optionally, the quick cut-off valve forms an emergency stop system, and the information processor controls the quick cut-off valve to switch according to comprehensive feedback of liquid level, flow and pressure.

Optionally, the feeding system is divided into an upper layer platform and a lower layer platform, the metering tank is arranged on the third platform, the overflow tank is arranged on the second platform, and the reaction kettle is arranged on the first platform.

The technical scheme of the utility model at least comprises the following beneficial effects:

1. the utility model provides a safe feeding system, which collects signals of different parts through a pressure transmitter, a flow transmitter and a liquid level transmitter, an information processor analyzes and judges according to set conditions, when a liquid level meter breaks down or a circuit goes wrong, the flow transmitter and the pressure transmitter can judge from other safety conditions, a feeding mode of multiple comprehensive protection such as pressure interlocking protection, liquid level interlocking protection and flow interlocking protection can be formed, pressure, liquid level and metering signals in the system are mutually related, an abnormal signal can judge and analyze abnormal sources through other two signals and make accurate response, the control precision of equipment is improved, the probability of accident occurrence can be greatly reduced, and the safety protection function is improved, so that enterprises can safely produce the system.

2. The utility model provides a safe feeding system which comprises a plurality of groups of feeding pumps for feeding in parallel, wherein the feeding pumps are convenient to maintain, when one feeding pump fails, the feeding pumps can be disassembled and maintained after the front and rear manual valves of the feeding pumps are closed, and other feeding pumps can ensure the normal operation of the feeding system and effectively avoid the occurrence of the production stopping phenomenon.

3. The utility model provides a safe feeding system, which comprises a flow transmitter, wherein the flow transmitter can accurately measure the materials of each part, the accuracy of the flow transmitter adopting the primary standard can reach +/-0.02%, after the relevant flow parameters of each region are set, a control system performs the opening degree of an interlocking control valve according to the signals fed back by the flow transmitter, and the total supply quantity of each region or the accurate control and supply in a time period according to the process requirements can be realized, thereby being beneficial to the cost analysis management and control and the control of the product quality.

4. The utility model provides a safe feeding system which comprises a quick cut-off valve arranged at an inlet or an outlet of a raw material tank, a metering tank, a reaction kettle and an overflow tank, wherein in an emergency situation, the feeding process can be stopped emergently through an emergency stop system formed by the quick cut-off valve.

Drawings

FIG. 1 is a schematic diagram of the overall layout of a loading system according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a feeding system module according to an embodiment of the present utility model;

in the figure: 100. a raw material tank; 110. a first magnetic flap level gauge; 120. a first flow transmitter; 200. a feeding device; 210. a first supply pump; 211. a first check valve; 220. a second supply pump; 221 a second check valve; 300. a first metering tank; 310. a first magnetic ball level gauge; 320. a second magnetic flap level gauge; 330. a second flow transmitter; 400. a second metering tank; 410. a second magnetic ball level gauge; 420. a third magnetic flap level gauge; 430. a third flow transmitter; 500. an overflow tank; 510. a fourth magnetic ball level gauge; 520. a fourth flow transmitter; 600. a reaction kettle; 610. a first reaction kettle; 620. a second reaction kettle; 700. a pressure transmitter; 800. an information processor; 900. a control valve; 910 a first valve; 920. a second valve; 930. a third valve; 940. a fourth valve; 950. a fifth valve; 960. a sixth valve; 970. a seventh valve; 1000. a flow transmitter; 2000. and a liquid level detection device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.

As shown in fig. 1: the utility model provides a safe feeding system, which comprises a reaction kettle 600, a raw material tank 100, a feeding device 200, a control valve 900, a metering tank, an overflow tank 500, a pressure transmitter 700, a flow transmitter 1000, a liquid level detection device 2000, an alarm device and an information processor 800, wherein the raw material tank is provided with a plurality of liquid level sensors;

the pressure transmitter 700 is arranged between the feeding device 200 and the metering tank, and is used for detecting the pressure condition of a pipeline, transmitting a pressure signal to the information processor 800, and when the pressure does not accord with a set condition, the information processor 800 controls the alarm device to alarm and remind, and simultaneously controls the feeding device 200 and the control valve 900 to stop or slow down feeding;

the flow transmitter 1000 comprises a first flow transmitter 120, a second flow transmitter 330, a third flow transmitter 430 and a fourth flow transmitter 520, which are respectively arranged between the feeding device 200 and the metering tank and at the outlet of the overflow tank 500, and are used for detecting the discharge flow of the raw material tank 100, the feed flow of the metering tank and the discharge flow of the overflow tank 500, transmitting flow signals to the information processor 800, and when the flow conditions do not meet the set conditions, the information processor 800 controls the alarm device to alarm and remind, and simultaneously controls the feeding device 200 and the control valve 900 to stop or slow down the feeding;

the liquid level detection device 2000 includes a first magnetic flap liquid level meter 110, a first magnetic flap liquid level meter 310, a second magnetic flap liquid level meter 320, a second magnetic flap liquid level meter 410, a third magnetic flap liquid level meter 420, and a fourth magnetic flap liquid level meter 510, which are respectively disposed in the raw material tank 100, the first metering tank 300, the second metering tank 400, and the overflow tank 500, and are used for detecting the liquid level conditions of the raw material tank 100, the first metering tank 300, the second metering tank 400, and the overflow tank 500, and transmitting liquid level signals to the information processor 800, and when the liquid level conditions do not meet the set conditions, the information processor 800 controls the alarm device to alarm and remind, and simultaneously controls the feeding device 200 and the control valve 900 to stop or slow down the feeding.

The feeding system further comprises a manual device, and the manual device can realize manual step-by-step interlocking control.

The feeding device 200 comprises a feeding pump, a check valve and a motor, wherein a control valve 900 is arranged at an inlet and an outlet of the feeding pump, the check valve is arranged between the feeding pump and the pressure transmitter 700, the motor receives signals transmitted by the information processor 800, and the motor is used for closing or slowing down the operation of the feeding pump.

The feeding device 200 comprises two parallel feed pumps.

The liquid level detection device comprises a liquid level transmitter and a liquid level meter.

The liquid level meter comprises a magnetic flap liquid level meter, a magnetic ball liquid level meter, a steel belt liquid level meter, an ultrasonic liquid level meter, a radio frequency admittance liquid level meter, a magnetostriction liquid level meter, a throw-in liquid level meter and a radar liquid level meter.

The metering tank is provided with a magnetic floating ball level gauge and a magnetic turning plate level gauge.

The reaction kettle 600 and the metering tanks are correspondingly grouped, and each group is connected in parallel.

The inlet or outlet of the raw material tank 100, the metering tank, the reaction kettle 600 and the overflow tank 500 are provided with quick shut-off valves.

The feeding system is divided into an upper layer platform and a lower layer platform, the metering tank is arranged on a third platform, the overflow tank 500 is arranged on a second platform, and the reaction kettle 600 is arranged on a first platform.

Specifically, the raw material tank 100 is used for storing raw materials for production, such as toluene, phosphorus trichloride, etc., the tank size can be determined according to the production requirement, and the first valve 910 is provided at the inlet of the raw material tank 100.

The control valve 900 is disposed at the inlet and outlet of the raw material tank 100, the metering tank, the reaction kettle 600, and the overflow tank 500, and is connected to the information processor 800 by a wire, and is used for receiving signals transmitted by the information processor 800 and executing corresponding operations.

The control system of the information processor 800 includes a DCS (distributed control system) system or a PLC (programmable logic controller) system, and a control program is edited in advance to realize control of each step and perform interlock control, analysis and judgment according to feedback signals such as a site pressure signal, a liquid level signal, a flow rate signal, and the like.

The alarm device is connected with the information processor 800 through a lead, and when the pressure, flow and liquid level signals are abnormal, the information processor 800 outputs signals to the alarm device, and the alarm device sends out alarm sounds after receiving the signals.

The feeding device 200 is connected with the information processor 800 through a wire, a first path is formed by 2 sets of feeding pumps in a parallel connection mode, a second path is formed by the first feeding pump 210, a control valve 900 of an inlet and an outlet of the first feeding pump and the first check valve 211, a second path is formed by the second feeding pump 220, the control valve 900 of the inlet and the outlet of the second feeding pump and the second check valve 221, and a second valve 920 is arranged between the feeding device 200 and the pressure transmitter 700. The supply pump adopts a parallel connection mode, namely a control mode that the pressure transmitter 700 arranged on a supply pipeline converts the pressure signal into a 4-20ma electric signal or a signal of 0-5V and the like, the signal is fed back into a control system of the information processor 800, the control system is compared with a preset numerical value, and the output of the frequency converter is controlled through the output of an analog quantity after the internal calculation of the control system, so that the speed of the motor of the supply pump is controlled, and the supply pressure reaches the preset pressure. In this way, the first advantage can be set according to the pressure of the main pipeline, the first supply pump 210 can be operated when the supply amount is small, the second supply pump 220 can be automatically operated when the supply amount is large, the system can automatically control the number of 2 pumps to be operated according to the use condition, the power consumption is reduced, the equipment empty consumption is prevented, and the service cycle of spare parts is prolonged. The second advantage is that the maintenance of the feed pump is convenient, if one feed pump fails, the manual valves in front and back of the feed pump can be disassembled and maintained after being closed, and the normal operation of the feed system is ensured to effectively avoid the occurrence of the production stopping phenomenon.

The measuring tank is installed on a third layer platform of the workshop and is used for feeding and measuring production raw materials, the capacity of the tank can be determined according to the production requirement, the first measuring tank 300 corresponds to the first reaction kettle 610, the second measuring tank 400 corresponds to the second reaction kettle 620, and a third valve 930 and a sixth valve 960 are respectively arranged on branch pipelines of the first measuring tank 300 and the second measuring tank 400.

The overflow tank 500 is installed on the workshop second floor platform, receives the material that overflows in the measurement jar, increases buffering time, and the operating personnel of being convenient for handles the abnormal conditions to the overflow tank is parallelly connected on first measurement jar output pipeline and second measurement jar output pipeline, can directly export the raw materials in the overflow tank to reation kettle in, and sets up fifth valve 950 on the overflow pipe output pipeline, can control the output of the raw materials in the overflow tank.

The reaction kettle 600 is installed on a first layer of platform and is used for a container for chemical reaction in production so as to realize the heating, evaporating, cooling and low-high-speed mixing functions required by the process, and comprises a first reaction kettle 610 and a second reaction kettle 620, a fourth valve 940 is arranged between the first reaction kettle 610 and a first metering tank 300, and a seventh valve 970 is arranged between the second reaction kettle 620 and a second metering tank 400.

The flow transmitter 1000 is connected with the information processor 800 through wires, and comprises a first flow transmitter 120 mounted on a main pipeline of a supply pipeline for monitoring total flow, a second flow transmitter 330 mounted on a branch pipeline of the supply pipeline for monitoring flow of the first metering tank 300, a third flow transmitter 430 mounted on the branch pipeline of the supply pipeline for monitoring flow of the second metering tank 400, and a fourth flow transmitter 520 mounted on a pipeline at an outlet of the overflow tank 500 for detecting flow of the overflow tank 500, wherein different flow transmitters 1000 transmit signals to the information processor 800. The flow transmitter 1000 comprises a differential pressure type flow transmitter, a rotor flow transmitter, a magnetic float flow transmitter, a volume flow transmitter, a mass flow transmitter, an electromagnetic flow transmitter, an ultrasonic flow transmitter and the like, and can be selected according to different types and specifications of metering precision and conveying media, and the precision of the flow transmitter adopting the primary standard can reach +/-0.02%.

After the relevant flow parameters of each region are set by utilizing the flow interlocking, the DCS (PLC) system performs interlocking control to control the opening degree of the valve 900 according to 4-20Ma signals fed back by the flow transmitter 1000, so that the total supply quantity of each region can be realized or accurate control and supply can be performed within a time period according to the process requirements, and the cost analysis management and control and the product quality control are facilitated. Corresponding data are input according to a process menu pre-programmed by the control system, for example, the process requirement that the production and feeding amount of the first metering tank 300 is 500L, and the positive and negative deviation is controlled within a range of +/-2L. The second flow transmitter 330 sets a safety value of 501L, and when the feeding level of the first metering tank 300 reaches a specified range, the first magnetic levitation ball level gauge 310 installed in the first metering tank 300 has a problem or a signal line fails, and when the corresponding flow parameter is set to 501L, the third valve 930 of the quick cut-off valve is automatically closed and the operation of the feeding device 200 is stopped. Thereby ensuring the accuracy of the production and feeding amount and avoiding the occurrence of safety accidents.

The liquid level detection device 2000 is connected with the information processor 800 through a wire, and comprises a liquid level transmitter and a liquid level meter, wherein the liquid level meter comprises a first magnetic flap liquid level meter 110 installed on the raw material tank 100, a first magnetic ball liquid level meter 310 installed on the upper part of the first metering tank 300, a second magnetic flap liquid level meter 320 on the lower part, a second magnetic ball liquid level meter 410 installed on the upper part of the second metering tank 400, a third magnetic flap liquid level meter 420 on the lower part and a fourth magnetic flap liquid level meter installed in the overflow tank 500, the liquid level meter monitors the liquid level of the corresponding part respectively, and signals are transmitted to the information processor 800. The liquid level meter comprises a magnetic flap liquid level meter, a throw-in type liquid level meter, a radar liquid level meter, a magnetic floating ball liquid level meter, a steel belt liquid level meter, an ultrasonic liquid level meter, a radio frequency admittance liquid level meter, a magnetostriction liquid level meter and the like, and if the liquid level meter with high precision can be selected in the occasion with higher control precision requirement, the selection principle is to select the liquid level meter with the matched type and specification model according to different requirements of material media and precision.

Protection can be achieved by liquid level interlocking, for example, feeding liquid level interlocking control: for example, the second metering tank 400 is set to 1000L, the range of the material level corresponding to the third magnetic flap level gauge 420 is 850mm, the change of the feeding value can be fed back in real time through the transmitter arranged on the magnetic flap level gauge, when the liquid level reaches the interlocking value 850mm of the preset value, the control system automatically closes the sixth valve 960 of the quick cut-off valve and stops the operation of the feed pump, and the control system confirms that the feeding is completed.

And (3) blanking liquid level interlocking control: for example, when the method is applied to the oxidation drop reaction, strict control requirements are required for the drop amount of the material per minute, the change of the liquid level value during the real-time feedback of the third magnetic flap liquid level meter 420 during the material feeding can interlock the opening degree of the seventh valve 970 to control the material feeding speed, and in the production, if the temperature of the second reaction kettle 620 is too high during the reaction, the seventh valve 970 can be interlocked to close the temporary drop amount of the material feeding, so that the method finally meets the process requirements of the production.

Pressure transmitter 700 is mounted on the main supply line between supply device 200 and the metering tank and is connected to information processor 800 by a wire to transmit a pressure signal to information processor 800.

Protection is carried out by utilizing pressure interlocking, and high-pressure alarm protection is carried out: for example, the set running pressure of the system is 4.5Kg, and due to the failure of the control system, the third valve 930 and the sixth valve 960 of the workshop cannot be opened, or the condition that the supply pump motor cannot be stopped occurs, the system pressure is continuously increased, and when the set running pressure reaches 7Kg, the feeding pump motor is automatically closed to prevent the overpressure accident of the system pipeline.

Low-voltage alarm protection: such as damage to the impeller of the feed pump, leakage of the pipe, clogging of the pipe, etc., causes that the feed pressure cannot reach the normal feed pressure within a prescribed time. The control system automatically shuts down the feed pump and sends out an alarm to prompt maintenance personnel to check.

The control valve 900 is disposed at the inlet and outlet of the raw material tank 100, the metering tank, the reaction kettle 600, and the overflow tank 500, and comprises an emergency cut-off valve, a regulating valve, and an electromagnetic valve, which can receive information output by the information processor 800, perform corresponding operations, and also can be manually operated and maintained. The quick shut-off valve comprises a first valve 910, a second valve 920, a third valve 930, a fifth valve 950 and a sixth valve 960, and in case of emergency, the quick shut-off system formed by the quick shut-off valves can be used for stopping the feeding process in an emergency manner.

The working principle of the utility model is as follows:

the pressure transmitter is arranged on a main pipeline of the supply pipeline, the liquid level meter is arranged in the raw material tank, the metering tank and the overflow pipe, the flow of the raw material tank, the metering tank and the overflow pipe are monitored by the metering meter, different signals are collected and input into the information processor, the signals can be manually or automatically analyzed and judged according to the conditions set by the system in the information processor, the corresponding operation is carried out on the supply pump and the valve by the output signals, a multiple protection safety feeding system of pressure interlocking, liquid level interlocking and metering interlocking is formed, and the safety of the feeding system can be ensured as long as one protection is normally effective.

In the present utility model, unless explicitly specified and defined otherwise, for example, it may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

The foregoing is a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model and are intended to be comprehended within the scope of the present utility model.

Claims

1. The safe feeding system comprises a reaction kettle and is characterized by further comprising a raw material tank, a feeding device, a control valve, a metering tank, an overflow tank, a pressure transmitter, a flow transmitter, a liquid level detection device, an alarm device and an information processor;

2. The safety feeding system according to claim 1, wherein the feeding device comprises a feeding pump, a check valve and a motor, wherein a control valve is arranged at an inlet and an outlet of the feeding pump, the check valve is arranged between the feeding pump and the pressure transmitter, and the motor receives a signal transmitted by the information processor and performs the closing or slowing down of the feeding pump.

3. The safety feeding system according to claim 2, wherein the feeding device comprises two of said feeding pumps connected in parallel.

4. The secure feed system of claim 1, wherein the liquid level detection device comprises a liquid level transmitter and a liquid level gauge.

5. The secure feed system of claim 4, wherein the level gauge comprises a magnetic flap level gauge, a magnetic ball level gauge, a steel strip level gauge, an ultrasonic level gauge, a radio frequency admittance level gauge, a magnetostrictive level gauge, a plunge level gauge, a radar level gauge.

6. The secure feed system of claim 5, wherein the metering tank is provided with the magnetic ball level gauge and the magnetic flap level gauge.

7. The safety feeding system according to claim 6, wherein the reaction kettles and the metering tanks are grouped according to the number of the metering tanks, and each group is connected in parallel.

8. The safety feeding system of claim 1, further comprising a manual device that controls the feeding device in steps and the control valve to achieve an interlocking control.

9. The secure feed system of claim 8, wherein the feedstock tank inlet, the feed device outlet, the metering tank inlet, and the overflow tank outlet are provided with quick shut-off valves.

10. The safe feeding system according to any one of claims 1 to 9, wherein the feeding system is divided into an upper layer platform and a lower layer platform, the metering tank is arranged on a third platform, the overflow tank is arranged on a second platform, and the reaction kettle is arranged on a first platform.