Phosphorus pentasulfide feeding skid-mounted facility

Abstract

The utility model belongs to the field of chemical production devices, and particularly relates to a phosphorus pentasulfide feeding skid-mounted facility, which comprises a feeding hopper, a conveying belt, a conveying belt and a conveying belt, the storage hopper is positioned below the feeding hopper; the first discharge valve is connected with an outlet of the feeding hopper and an inlet of the storage hopper; the first weighing sensor is arranged on the bin wall of the storage hopper and used for measuring the material level in the storage hopper; the discharging hopper is positioned below the storage hopper and is used for continuously and quantitatively feeding; the side wall of the discharging hopper is further connected with a weighing platform, and the bottom of the weighing platform is connected with a second weighing sensor. The second discharge valve is connected to the outlet of the storage hopper and the inlet of the discharge hopper; one end of the screw feeder is connected with the outlet of the discharge hopper, and the other end of the screw feeder is connected with the configuration groove. According to the phosphorus pentasulfide charging skid-mounted facility provided by the utility model, the required material quantity can be metered before charging, and the material can be continuously and quantitatively added into the configuration groove through the matching of the storage hopper, the discharge hopper and the screw feeder.

Description

Technical Field

[0001] The utility model belongs to the field of chemical production equipment, in particular to a phosphorus pentasulfide charging skid-mounted facility. Background Art

[0002] The actual molecular formula of phosphorus pentasulfide is P2S5. It is a yellow solid with a melting point of 276°C. It is stable when dry, but it hydrolyzes into phosphoric acid and hydrogen sulfide in water, so there is a smell of rotten eggs in the air. Phosphorus pentasulfide is highly toxic, and its hazard category is major hazard 4.3 + secondary hazard 4.1 dangerous goods. It is irritating to the eyes, respiratory tract and skin of operators during preparation. It is easy to catch fire due to friction when dry. Contact with humid air will generate heat and hydrogen sulfide gas, forming an explosive mixture with oxidizing substances. Phosphorus pentasulfide is an important raw material for the synthesis of pesticides. It reacts with alcohols to obtain an important phosphorus-containing intermediate "sulfide", which can be used to synthesize a variety of dithiophosphate pesticides, such as dimethoate, methyl parathion, malathion, etc.

[0003] The traditional method of controlling the feeding of phosphorus pentasulfide is to first manually weigh the required amount of phosphorus pentasulfide, manually put on a gas mask and labor protection supplies to put it into the reactor to separate the arsenic, stir it for reaction, and after the reaction is qualified, perform plate and frame filtration. During the manual feeding process, material overflow may occur. The manual operation has low production efficiency. The manual feeding process is labor-intensive and complicated to operate, and there are safety hazards. Moreover, manual feeding can only measure the required amount of material before feeding, and then add the required dosage to the configuration slot for feeding the material at one time, and continuous quantitative addition cannot be achieved. Moreover, the entire process requires manual operation. In view of this, the utility model provides a phosphorus pentasulfide feeding skid-mounted facility to solve the defect that continuous quantitative addition cannot be achieved during manual feeding. Utility Model Content

[0004] The utility model provides a phosphorus pentasulfide feeding skid-mounted facility, which can solve the defect in the prior art that continuous quantitative feeding cannot be achieved during manual feeding.

[0005] The utility model provides a phosphorus pentasulfide charging skid-mounted facility, comprising:

[0006] A feeding hopper for feeding phosphorus pentasulfide;

[0007] A storage hopper, located below the feeding hopper, for storing phosphorus pentasulfide;

[0008] A first discharge valve, connecting the outlet of the feeding hopper and the inlet of the storage hopper;

[0009] A first weighing sensor is arranged on the wall of the storage hopper and is used to measure the material level in the storage hopper;

[0010] A discharge hopper is located below the storage hopper and is used for continuous quantitative feeding; a weighing platform is also connected to the side wall of the discharge hopper, and a second weighing sensor is connected to the bottom of the weighing platform to weigh the weight of both ends of the discharge hopper per unit time;

[0011] A second discharge valve, connecting the outlet of the storage hopper and the inlet of the discharge hopper;

[0012] A screw feeder has one end connected to the outlet of the discharge hopper and the other end connected to the configuration trough.

[0013] In some technical solutions, a nitrogen cannon is connected to the side wall of the storage hopper.

[0014] In some technical solutions, a sealing cover is provided at the top of the feeding hopper.

[0015] In some technical solutions, the tops of the feeding hopper and the storage hopper are both provided with a nitrogen inlet and an exhaust gas outlet.

[0016] In some technical solutions, the nitrogen inlet and the exhaust gas outlet are located on both sides of the sealing cover.

[0017] In some technical solutions, the nitrogen inlet and the exhaust outlet are connected to a nitrogen pipeline and an exhaust pipeline respectively, and both the nitrogen pipeline and the exhaust pipeline are provided with solenoid valves.

[0018] In some technical solutions, a nitrogen cannon is connected to the side wall of the storage hopper.

[0019] In some technical solutions, the phosphorus pentasulfide charging skid-mounted facility also includes: a PLC control cabinet; the PLC control cabinet is used to display the operating status of the phosphorus pentasulfide charging skid-mounted facility, control the opening and closing of the first discharge valve and the second discharge valve, receive signal transmission from the first weighing sensor and the second weighing sensor, and control the opening and closing of the solenoid valve.

[0020] In some technical solutions, soft connections are provided between the first pneumatic discharge valve and the storage hopper, and between the second pneumatic discharge valve and the discharge hopper.

[0021] Some technical solutions also include a fixed bracket, which is respectively connected to the outer side walls of the feeding hopper, storage hopper and discharge hopper.

[0022] Compared with the prior art, the phosphorus pentasulfide feeding skid-mounted facility described in the utility model can measure the required amount of material before feeding, and then add the required dosage to the material feeding configuration slot at one time. Through the cooperation of the discharge hopper and the screw feeder, the material can be continuously and quantitatively added to the configuration slot.

[0023] The phosphorus pentasulfide feeding skid-mounted facility provided by the utility model is provided with a nitrogen cannon on the storage hopper, which can avoid the phenomenon of "bridging" of the phosphorus pentasulfide material in the storage hopper, and can make the phosphorus pentasulfide material flow smoothly to the discharge hopper, so as to better realize continuous quantitative feeding. The phosphorus pentasulfide feeding skid-mounted facility provided by the utility model takes into account the particularity of the material, and the entire system is sealed reliably, which can protect the personal safety of the operator and prevent material leakage and pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model provides a front view of a phosphorus pentasulfide charging skid-mounted facility.

[0025] Figure 2 The utility model provides a cross-sectional view of a phosphorus pentasulfide charging skid-mounted facility.

[0026] Description of reference numerals:

[0027] 1-feeding hopper, 2-storage hopper, 3-first discharge valve, 4-first weighing sensor, 5-discharging hopper, 6-weighing platform, 7-second weighing sensor, 8-second discharge valve, 9-screw feeder, 10-nitrogen cannon, 11-sealing cover, 12-nitrogen inlet, 13-exhaust outlet, 14-fixed bracket. DETAILED DESCRIPTION

[0028] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0029] The traditional method of controlling the feeding of phosphorus pentasulfide is to first manually weigh the required amount of phosphorus pentasulfide, manually put on a gas mask and labor protection supplies to separate the arsenic from the reactor, stir to react, and after the reaction is qualified, perform plate and frame filtration. During the manual feeding process, materials may overflow, and the manual operation has low production efficiency. The manual feeding process is labor-intensive and complicated, and there are safety hazards. In addition, manual feeding can only measure the required amount of material before feeding, and then add the required dosage to the material feeding configuration slot at one time, and continuous quantitative addition cannot be achieved.

[0030] The phosphorus pentasulfide feeding skid-mounted facility provided by the utility model comprises: a feeding hopper 1, used for feeding phosphorus pentasulfide; a storage hopper 2, located below the feeding hopper 1, used for accumulating phosphorus pentasulfide; a first discharge valve 3, connected to the outlet of the feeding hopper 1 and the inlet of the storage hopper 2; a first weighing sensor 4 is arranged on the silo wall of the storage hopper 2, used for measuring the material level in the storage hopper 2; a discharge hopper 5, located below the storage hopper 2, used for continuous quantitative feeding; a weighing platform 6 is also connected to the side wall of the discharge hopper 5, and a second weighing sensor 7 is connected to the bottom of the weighing platform 6, used for weighing the weight of both ends of the discharge hopper 5 per unit time; a second discharge valve 8, connected to the outlet of the storage hopper 2 and the inlet of the discharge hopper 5; a screw feeder 9, one end of which is connected to the outlet of the discharge hopper 2, and the other end is connected to the configuration groove.

[0031] In the utility model, the data fed back by the first sensor 4 can be used to know whether the storage hopper 2 needs to be refilled. The weight lost by the storage hopper 2 per unit time can be calculated through the data fed back by the second weighing sensor 7 to calculate the flow rate of the hopper 5 per hour. The screw feeder 9 controls the feeding speed through the flow rate to achieve continuous quantitative addition of materials to the configuration slot.

[0032] A phosphorus pentasulfide charging skid-mounted facility is described in detail below.

[0033] like Figure 1 and Figure 2 As shown, a phosphorus pentasulfide charging skid-mounted facility provided by an embodiment of the utility model comprises:

[0034] The feeding hopper 1 is used for feeding phosphorus pentasulfide; the hopper body of the feeding hopper 1 is made of stainless steel;

[0035] A storage hopper 2, located below the feeding hopper 1, for storing phosphorus pentasulfide;

[0036] A first discharge valve 3 is connected to the outlet of the feeding hopper 1 and the inlet of the storage hopper 2;

[0037] A first weighing sensor 4 is disposed on the wall of the storage hopper 2 and is used to measure the material level in the storage hopper 2;

[0038] In this embodiment, a weighing meter is also provided corresponding to the first weighing sensor 4; in this embodiment, the storage hopper 2, the first weighing sensor 4, and the weighing meter form a static hopper scale, and the weighing meter is connected to the first weighing sensor 4 on the storage hopper 2 through an electrical signal, and is used to measure the material level in the storage hopper 2; when the weighing meter shows that the material level is too low, the staff is prompted to refill the material, for example, when the weighing meter shows that the weight of the phosphorus pentasulfide material in the storage hopper 2 is 5kg, the storage hopper 2 is prompted to refill the material; the weighing meter model is C602, and the accuracy is: III;

[0039] The discharge hopper 5 is located below the storage hopper 2 and is used for continuous quantitative feeding; a weighing platform 6 is also connected to the side wall of the discharge hopper 5, and a second weighing sensor 7 is connected to the bottom of the weighing platform 6 to weigh the weight of both ends of the discharge hopper 5 per unit time;

[0040] In the utility model, the discharging hopper 5 adopts the principle of the weight-loss scale, which is a micro-weighing device with intermittent feeding and continuous discharging. It adopts vector control, can achieve higher control accuracy, simple structure, good sealing performance, small size, light weight, and has a special stirring device to prevent material from connecting and bridging. It is suitable for controlling the batching of fine materials such as cement, lime powder, coal powder, chemical raw materials, activated carbon, etc. When weighing, the material in the silo of the weight-loss scale is actually completed in a static state. The equipment can calculate the flow rate according to the difference between the two weights measured in two working states. The difference between the weight-loss scale and the flow set value error can also be compensated in the next cycle. The weight measurement time is completed within a few minutes. When in use, it will not be affected by the zero drift and temperature drift of its sensor. The weighing hopper, weighing platform and screw conveyor of the weight-loss scale are made of stainless steel structure, which can be used in harsh environments and has high measurement accuracy. Specifically, in this embodiment, the discharging hopper 5 calculates the flow rate per hour by the weight lost per unit time. The weight-loss scale has a small flow rate and is a material micro-weighing device. For example, if the weight of the material is 1000 grams now and 990 grams after 10 seconds, it means that the weight is lost by 10 grams every 10 seconds, and the weight is lost by 3600 grams per hour, so the flow rate is 3.6kg / h. A stirring device is also built into the discharge hopper 5 to prevent the material from arching or bridging.

[0041] In this embodiment, the second weighing sensor 7 uses 4 HBB bellows sensors, which are of the following types: resistive pressure bellows sensor, nonlinearity: <0.015%, hysteresis error: <0.015%, creep: <0.0166%, working temperature: -20℃~+50℃, overload capacity: sensor capacity: 150%. The HBB bellows cantilever beam sensor adopts a parallel beam structure, the metal bellows is sealed and welded, and inert gas is filled inside. It has strong anti-overload, anti-fatigue and anti-eccentric load capabilities. In this embodiment, a control instrument is also provided corresponding to the second weighing sensor 7. The control instrument is connected to the second weighing sensor 7 on the discharge hopper 5 through an electrical signal. The control instrument displays the real-time weight of the discharge hopper 5, and calculates the flow rate based on the real-time speed and weight, and then calculates the speed required by the screw feeder 9 based on the flow rate, and sends a 4-20mA signal to the frequency converter, corresponding to the 0-50Hz of the frequency converter, to adjust the feeding amount of the screw feeder 9.

[0042] A second discharge valve 8 is connected to the outlet of the storage hopper 2 and the inlet of the discharge hopper 5;

[0043] The screw feeder 9 has one end connected to the outlet of the discharge hopper 2, and the other end connected to the configuration slot. Specifically, the utility model adopts a double screw propulsion feeding method, the screw rod is made of stainless steel, and is driven by the same gearbox, so the feeding is stable. Specifically, a frequency converter is also configured corresponding to the screw feeder 9. The power of the screw feeder 9 is 0.55kw, and the speed can be adjusted by variable frequency. The screw feeder body and the loss-in-weight scale hopper are made into an integrated structure, which has a simple structure and high metering accuracy. The screw feeder body and the loss-in-weight scale hopper are made into an integrated structure, which has a simple structure and high metering accuracy.

[0044] In the present invention, the first discharge valve 3 and the second discharge valve 8 are composed of a gate valve and a pneumatic device; the pneumatic device provides power for the gate valve, so that the first discharge valve 3 and the second discharge valve 8 can be opened and closed quickly, and the time is not more than 1.5 seconds. Preferably, a sealing strip is provided between the first discharge valve 3 and the second discharge valve 8 and the feeding hopper 1 and the storage hopper 2 to prevent pressure and material leakage.

[0045] The method of using the utility model of the phosphorus pentasulfide feeding skid-mounted facility is as follows: the storage hopper 2 is a hopper scale, and the first weighing sensor 4 detects the weight of the material in the storage hopper 2 online. When the phosphorus pentasulfide storage in the storage hopper 2 is at a low material level (such as 5kg), the weighing instrument sends a feeding signal, and the operator feeds the material into the feeding hopper 1. After the feeding is completed, the first discharge valve 2 is controlled to open and feed the material into the storage hopper 2. When the material level in the storage hopper 2 is higher than the preset net weight upper limit (such as 25kg), the weighing instrument stops the feeding signal, closes the second discharge valve 8, and completes the feeding operation. Open the second discharge valve 8, and the material in the storage hopper 2 flows to the screw feeder 9 through the discharge hopper 5 to realize continuous feeding. At this time, the change of the material weight of the discharge hopper 5 within a certain period of time is recorded according to the data fed back by the second weighing sensor 7, and the flow rate of the material is calculated. The speed of the screw feeder 9 is adjusted according to the flow rate of the material, so that a certain amount of phosphorus pentasulfide material enters the phosphorus pentasulfide configuration tank. When the discharge hopper 5 operates normally, the first discharge valve 3 is in a closed state.

[0046] The phosphorus pentasulfide charging skid-mounted facility provided by the utility model takes into account the particularity of the material. The connections between the various components of the entire facility must be sealed reliably, moisture-proof, dust-proof, and poison-proof. The material of each hopper is 316L stainless steel to prevent material leakage and pollution and protect the personal safety of operators.

[0047] Preferably, in order to prevent the phosphorus pentasulfide material from "bridging" in the storage hopper 2, a nitrogen cannon 10 is connected to the side wall of the storage hopper 2. The nitrogen cannon 10 can fill nitrogen into the warehouse to maintain a slightly positive pressure state in the warehouse. The nitrogen cannon 10 is a pulse integrated arch-breaking nitrogen cannon 10, and the equipment consists of a nitrogen cylinder, a flexible flange, a blowing device, and a pulse valve. The compressed nitrogen is filled into the nitrogen cylinder by an air compressor. When the cylinder is full of gas, the pulse valve of the equipment opens instantly, and the strong impact force formed by the opening of the pulse valve diaphragm is quickly sprayed into the hopper, thereby breaking through the blocked area in the hopper. Because the phosphorus pentasulfide material is powdery and has poor fluidity, it is easy to produce a "bridging" phenomenon during the process of feeding by its own gravity. Therefore, it can be impacted by an external nitrogen cannon 10 to make the powdered phosphorus pentasulfide flow smoothly downward.

[0048] Preferably, the inlet of the feeding hopper 1 is provided with a sealing cover 11. The sealing cover 11 ensures the sealing of the feeding hopper 1 while facilitating feeding, and facilitates the feeding operation of the operator.

[0049] In the present utility model, since phosphorus pentasulfide is defined as a dangerous article of primary hazard class 4.3 + secondary hazard class 4.1. Its melting point is 276°C. It will generate heat when in contact with moist air, release toxic and flammable gases, and form an explosive mixture with oxidizing substances. Therefore, the feeding hopper 1 and the storage hopper 2 are protected by nitrogen, so that the hoppers of the feeding hopper 1 and the storage hopper 2 are in a slightly positive pressure state, and the nitrogen pressure is: 0.7-0.8MPa.

[0050] Preferably, the tops of the feeding hopper 1 and the storage hopper 2 are both provided with a nitrogen inlet 12 and a waste gas outlet 13. After the feeding hopper 1 is charged, it is necessary to add nitrogen to the feeding hopper 1 to form a slightly positive pressure state in the silo, and when the feeding hopper 1 completes the feeding of the storage hopper 2, the first discharge valve 3 is closed, and nitrogen is filled into the storage hopper 2. The system is protected by nitrogen to form a slightly positive pressure state, which can keep the feeding hopper 1 and the storage hopper 2 dry, and prevent phosphorus pentasulfide from being hydrolyzed into phosphoric acid and hydrogen sulfide when it meets water, so that its properties change and produce a rotten egg smell. The waste gas outlet 12 can send the waste gas to the alkali scrubber (not shown in the figure) to remove hydrogen sulfide and dust, which can avoid the inability to continuously feed and discharge due to the generation of waste gas.

[0051] Preferably, in order to facilitate the charging of nitrogen and the discharge of waste gas, the nitrogen inlet 12 and the waste gas outlet 13 should be as far away as possible, and therefore, the nitrogen inlet 12 and the waste gas outlet 13 are located on both sides of the sealing cover 11.

[0052] Preferably, the nitrogen inlet 11 and the exhaust outlet 12 are connected to a nitrogen pipeline and an exhaust pipeline respectively, and both the nitrogen pipeline and the exhaust pipeline are provided with solenoid valves. The solenoid valves are provided on the nitrogen pipeline and the exhaust pipeline to facilitate the control of nitrogen charging and exhaust gas extraction.

[0053] Preferably, the phosphorus pentasulfide charging skid-mounted facility also includes: a PLC control cabinet; the PLC control cabinet is used to display the operating status of the phosphorus pentasulfide charging skid-mounted facility, control the opening and closing of the first discharge valve 3 and the second discharge valve 8, and receive the signal transmission of the first weighing sensor 6 and the second weighing sensor 10 and control the opening and closing of the solenoid valve. The staff can realize the remote control of the phosphorus pentasulfide charging skid-mounted facility through the PLC control cabinet. The PLC control cabinet is provided with a DCS communication interface. The general signal between the PLC and the DCS system is transmitted by RS485 Modbus communication. The control system should be able to accept the instructions of the remote control system, such as remote opening and stopping of equipment, flow value setting, etc., and can display the equipment operating status, flow value, discharge valve working condition, etc. in the control room, and reserve important signal ports, such as fault parking alarm signals, etc. Automatically controlled or interlocked controlled equipment should have facilities for manual control and release of automatic control or interlocked control. Remotely controlled equipment should have measures for local control and release of remote control. When sudden start-up may endanger the safety of surrounding personnel, a start-up warning signal and an emergency power-off switch or a self-locking button should be installed next to the mechanical equipment. When the equipment and adjacent equipment in the process flow have interlocking requirements, the control circuit should be able to output corresponding operation signals, alarm signals and other interlocking signals. At the same time, when it is necessary to receive interlocking start and stop signals from a distance, in order to unify the design requirements, the start-up signal from a distance is a normally open contact of the switch quantity, which is closed when an event occurs (holding time is 3s), and the stop signal is a normally closed contact of the switch quantity, which is disconnected when an event occurs (continuously maintained). All input and output switch quantity signals should be passive dry contacts, and the contact capacity should not be less than AC220V, 3A. All input and output analog signals should be 4~20mA signals.

[0054] Preferably, a flexible connection is provided between the first discharge valve 3 and the storage hopper 2, and between the second discharge valve 8 and the discharge hopper 5. Specifically, the flexible connection is a soft silicone tube. The design and material selection of the flexible connection should ensure the airtightness of the equipment, and no powder or gas leakage should be allowed, and the equipment metering should not be interfered with.

[0055] Preferably, in order to maintain the stability of the phosphorus pentasulfide charging skid-mounted facility during operation, the phosphorus pentasulfide charging skid-mounted facility further includes a fixed bracket 14, which is connected to the outer side walls of the feeding hopper 1, the storage hopper 2 and the discharge hopper 5. The material of the fixed bracket 14 in the utility model is Q235B.

[0056] In this utility model, the gate valve is purchased from Zhongxing Sanyuan, model DN200; the pneumatic device is purchased from Leierda. The solenoid valve used in this utility model is DN20; the control cabinet is selected from Xinliming / Fei Ce / Huarong Technology / Fei Pu Explosion-proof Electrical Appliances and other companies, model ZX-KZG; the feeding hopper 1 is purchased from Zhongxing Sanyuan, made of TISCO 316L material; the storage hopper 2 is purchased from Zhongxing Sanyuan, model 0.3m 3 The first load cell was purchased from the United States, model HBB-40kg; the second load cell was purchased from the United States, model HM8-100.

[0057] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A phosphorus pentasulfide charging skid-mounted facility, characterized in that: include: A feeding hopper (1) for feeding phosphorus pentasulfide; A storage hopper (2), located below the feeding hopper (1), for storing phosphorus pentasulfide; A first discharge valve (3) connecting the outlet of the feeding hopper (1) and the inlet of the storage hopper (2); A first weighing sensor (4) is arranged on the wall of the storage hopper (2) and is used to measure the material level in the storage hopper (2); A discharge hopper (5) is located below the storage hopper (2) and is used for continuous quantitative feeding; a weighing platform (6) is connected to the side wall of the discharge hopper (5), and a second weighing sensor (7) is connected to the bottom of the weighing platform (6) for weighing the weight of the two ends of the discharge hopper (5) per unit time; A second discharge valve (8) connecting the outlet of the storage hopper (2) and the inlet of the discharge hopper (5); A screw feeder (9) has one end connected to the outlet of the discharge hopper (5) and the other end connected to the configuration trough.

2. The phosphorus pentasulfide charging skid-mounted facility according to claim 1, characterized in that: A nitrogen cannon (10) is connected and arranged on the side wall of the storage hopper (2).

3. The phosphorus pentasulfide charging skid-mounted facility according to claim 1, characterized in that: The inlet of the feeding hopper (1) is provided with a sealing cover (11).

4. The phosphorus pentasulfide charging skid-mounted facility according to claim 3, characterized in that: The tops of the feeding hopper (1) and the storage hopper (2) are both provided with a nitrogen inlet (12) and an exhaust gas outlet (13).

5. The phosphorus pentasulfide charging skid-mounted facility according to claim 4, characterized in that: The nitrogen inlet (12) and the exhaust gas outlet (13) are located on both sides of the sealing cover (11).

6. The phosphorus pentasulfide charging skid-mounted facility according to claim 4, characterized in that: The nitrogen inlet (12) and the exhaust gas outlet (13) are respectively connected to a nitrogen pipeline and an exhaust gas pipeline, and both the nitrogen pipeline and the exhaust gas pipeline are provided with solenoid valves.

7. The phosphorus pentasulfide charging skid-mounted facility according to claim 6, characterized in that: The phosphorus pentasulfide charging skid-mounted facility further comprises: a PLC control cabinet; the PLC control cabinet is used to display the operating status of the phosphorus pentasulfide charging skid-mounted facility, control the opening and closing of the first discharge valve (3) and the second discharge valve (8), receive signal transmission from the first weighing sensor (4) and the second weighing sensor (7), and control the opening and closing of the solenoid valve.

8. The phosphorus pentasulfide charging skid-mounted facility according to claim 1, characterized in that: Soft connections are provided between the first discharge valve (3) and the storage hopper (2), and between the second discharge valve (8) and the discharge hopper (5).

9. The phosphorus pentasulfide charging skid-mounted facility according to claim 1, characterized in that: It also comprises a fixed bracket (14), wherein the fixed bracket (14) is respectively connected to the outer side walls of the feeding hopper (1), the storage hopper (2) and the discharge hopper (5).

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