A new type of yellow phosphorus slag water separator backwashing device

Abstract

The utility model discloses a novel yellow phosphorus slag water separator backflushing device, including the backflushing pipeline of inlaying into the separator, a plurality of shower nozzles are arranged below the rotating screen cylinder in the separator, the shower nozzle is connected with one end of backflushing pipeline, and the other end of backflushing pipeline is connected with booster pump, one end of rotating screen cylinder is feed inlet, and the other end is discharge port, and the position of discharge port is provided with belt conveyor, and the water collecting tank of one side of belt conveyor is equipped with liquid level meter, the utility model can carry out backflushing process to the rotating screen cylinder of yellow phosphorus slag water separator, and greatly improves the dehydration separation effect of separator.

Description

Technical Field

[0001] This utility model relates to the field of slag-water separator technology, and in particular to a novel backwashing device for a yellow phosphorus slag-water separator. Background Technology

[0002] Because yellow phosphorus is produced using the electric furnace method, a large amount of phosphorus slag, a byproduct, is generated during the high-temperature conversion of phosphate rock, silica, and alumina. The phosphorus slag is first cooled by a large amount of clean water, and then mixed and granulated in a mixing tower to form a slag-water mixture. It is then separated and recovered by a slag-water separator. However, the long-term operation of the rotating screen cylinder inside the separator can easily cause clogging of the phosphorus slag. The phosphorus slag has a high hardness, and the current backwashing device is not set up properly, which directly affects the dewatering and separation effect of the separator. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a new type of backwashing device for yellow phosphorus slag water separator, which can perform a backwashing process on the rotating screen of the yellow phosphorus slag water separator to improve the dewatering and separation effect of the separator.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel backwashing device for a yellow phosphorus slag water separator, including a backwashing pipe extending into the separator, multiple nozzles arranged below the rotating screen cylinder inside the separator, the nozzles being connected to one end of the backwashing pipe, the other end of the backwashing pipe being connected to a booster pump, one end of the rotating screen cylinder being a feed inlet, the other end being a discharge outlet, a belt conveyor being arranged at the discharge outlet, and a level gauge being provided in a water collection tank on one side of the belt conveyor.

[0005] Preferably, the output terminal of the level gauge is connected to the input terminal of the controller, and the control signal output terminal of the controller is connected to the control terminal of the booster pump.

[0006] Preferably, the backwashing pipeline is further equipped with a pressure transmitter, the output end of which is connected to the input end of the controller, and the control signal output end of the controller is connected to the alarm.

[0007] Preferably, the backwashing pipe is further provided with a pneumatic switch valve, and the control terminal of the pneumatic switch valve is connected to the control signal output terminal of the controller.

[0008] Preferably, the controller is a DCS system.

[0009] Preferably, the pressure adjustment range of the booster pump is 30-50 MPa.

[0010] Preferably, the backwashing pipe is a pipe with a diameter of 30 mm or less.

[0011] Preferably, the nozzle is a direct-flow jet nozzle.

[0012] Preferably, the level gauge is a float level gauge.

[0013] Preferably, the bottom of the water collection tank is also provided with a drainage pipeline, and the drainage pipeline is equipped with a corresponding valve.

[0014] The beneficial effects of this utility model are: This utility model can perform a backwashing process on the rotating screen cylinder of the yellow phosphorus slag water separator, which greatly improves the dewatering and separation effect of the separator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the backwashing device for a novel yellow phosphorus slag water separator. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, a novel backwashing device for a yellow phosphorus slag water separator includes a backwashing pipe 2 extending into the separator 1. Multiple nozzles 3 are installed below the rotating screen cylinder 1.1 inside the separator 1. The nozzles 3 are connected to one end of the backwashing pipe 2, and the other end of the backwashing pipe 2 is connected to a booster pump 4. One end of the rotating screen cylinder 1.1 is the feed inlet, and the other end is the discharge outlet. A belt conveyor 5 is installed at the discharge outlet, and a water collection tank 6 on one side of the belt conveyor 5 is equipped with a level gauge 7.

[0018] Preferably, the output terminal of the level gauge 7 is connected to the input terminal of the controller 8, and the control signal output terminal of the controller 8 is connected to the control terminal of the booster pump 4. In this embodiment, when the water sprayed from the nozzle 3 through the backwash pipe 2 fails to effectively flush away the yellow phosphorus slag clogging the screen holes on the surface of the selective screen cylinder 1.1, the slag-water mixture coming from the feed port of the rotating screen cylinder 1.1 will directly pass through the rotating screen cylinder 1.1 and be transported to the belt conveyor 5. The water will not be filtered out or very little will be filtered out from the screen holes of the rotating screen cylinder 1.1. This results in a large amount of water directly entering the surface of the belt conveyor 5 along with the yellow phosphorus slag. Then, the excess water overflows from the surface of the belt conveyor 5 and flows into the water collection tank 6 below, causing the liquid level in the water collection tank 6 to be too high. Since the level gauge 7 transmits the liquid level information to the controller 8 in real time, when the liquid level data is too high, the controller 8 controls and adjusts the pressure of the booster pump 4 to increase its pressure, thereby increasing the cleaning and flushing force.

[0019] Preferably, the backwash pipe 2 is further equipped with a pressure transmitter 9. The output terminal of the pressure transmitter 9 is connected to the input terminal of the controller 8, and the control signal output terminal of the controller 8 is connected to the alarm. In this embodiment, the pressure transmitter 9 outputs a 4-20mA current signal. It detects the pressure inside the backwash pipe 2 in real time and converts the pressure into an electrical signal, which is then transmitted to the controller 8. When the pressure inside the backwash pipe 2 is lower than the set value, the controller 8 controls the relevant alarm to sound.

[0020] Preferably, the backwash pipe 2 is further provided with a pneumatic switch valve 10, the control terminal of which is connected to the control signal output terminal of the controller 8. The pneumatic switch valve 10 can execute opening or stopping commands according to the settings of the controller 8.

[0021] Preferably, the controller 8 is a DCS system. A DCS system is a system for controlling continuous industrial processes, consisting of multiple controllers distributed throughout the plant, each controller responsible for a portion of the process; the DCS system uses distributed control logic, is capable of handling a large number of input and output signals, and implements complex control strategies; it can be used for processes involving complex chemicals.

[0022] Preferably, the pressure adjustment range of the booster pump 4 is 30-50 MPa.

[0023] Preferably, the backwash pipe 2 is a pipe with a diameter of 30 mm or less.

[0024] Preferably, the nozzle 3 is a direct-flow jet nozzle.

[0025] Preferably, the level gauge 7 is a float level gauge.

[0026] Preferably, the bottom of the water collection tank 6 is also provided with a drain pipe 11, and a corresponding valve is provided on the drain pipe 11. The water generated during the backwashing process and the water filtered out from the sieve holes accumulate in the water collection tank 6. After reaching a certain amount, the valve is opened and the accumulated water is discharged through the drain pipe 11.

[0027] The working principle of this embodiment is as follows:

[0028] During normal operation, the backwashing device of separator 1 operates. Booster pump 4 pressurizes clean water and sends it into backwash pipe 2. Pressure transmitter 9 can monitor the pressure inside backwash pipe 2 in real time. Then, pneumatic switch valve 10 is opened, and clean water is sprayed from multiple nozzles 3 to clean the rotating screen cylinder 1.1. When the pressure inside backwash pipe 2 is lower than the set value, controller 8 activates the relevant alarm. If the water sprayed from the nozzles 3 in backwash pipe 2 fails to effectively flush away the yellow phosphorus slag clogging the screen holes on the surface of the screen cylinder 1.1, the slag-water mixture coming from the feed inlet of the rotating screen cylinder 1.1 will... The phosphorus slag is transported directly through the rotary screen cylinder 1.1 to the belt conveyor 5. Very little or no moisture is filtered out from the screen openings of the rotary screen cylinder 1.1. This results in a large amount of moisture directly entering the surface of the belt conveyor 5 along with the phosphorus slag. Excess water overflows from the surface of the belt conveyor 5 and flows into the water collection tank 6 below, causing the liquid level in the water collection tank 6 to be too high. Since the level gauge 7 transmits the liquid level information to the controller 8 in real time, when the liquid level is too high, the controller 8 controls and adjusts the outlet pressure of the booster pump 4 and the backwashing frequency to thoroughly flush out the phosphorus slag that has clogged the screen openings on the surface of the rotary screen cylinder 1.1, ensuring effective separation.

[0029] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A novel backwashing device for a yellow phosphorus slag water separator, comprising a backwashing pipe (2) extending into the separator (1), characterized in that: Multiple nozzles (3) are installed below the rotating screen cylinder (1.1) inside the separator (1). The nozzles (3) are connected to one end of the backwash pipe (2), and the other end of the backwash pipe (2) is connected to the booster pump (4). One end of the rotating screen cylinder (1.1) is the feed inlet, and the other end is the discharge outlet. A belt conveyor (5) is installed at the discharge outlet. A water collection tank (6) on one side of the belt conveyor (5) is equipped with a level gauge (7).

2. The backwashing device for a novel yellow phosphorus slag water separator according to claim 1, characterized in that: The output end of the level gauge (7) is connected to the input end of the controller (8), and the control signal output end of the controller (8) is connected to the control end of the booster pump (4).

3. The backwashing device for a novel yellow phosphorus slag water separator according to claim 1, characterized in that: The backwash pipe (2) is also equipped with a pressure transmitter (9), the output end of the pressure transmitter (9) is connected to the input end of the controller (8), and the control signal output end of the controller (8) is connected to the alarm.

4. The backwashing device for a novel yellow phosphorus slag water separator according to claim 1, characterized in that: The backwashing pipe (2) is also equipped with a pneumatic switch valve (10), and the control end of the pneumatic switch valve (10) is connected to the control signal output end of the controller (8).

5. A novel yellow phosphorus slag water separator backwashing device according to any one of claims 2 to 4, characterized in that: The controller (8) is a DCS system.

6. The backwashing device for a novel yellow phosphorus slag water separator according to claim 1, characterized in that: The pressure adjustment range of the booster pump (4) is 30-50 MPa.

7. The backwashing device for a novel yellow phosphorus slag water separator according to claim 1, characterized in that: The backwash pipe (2) is a pipe with a diameter of 30 mm or less.

8. The backwashing device for a novel yellow phosphorus slag water separator according to claim 7, characterized in that: The nozzle (3) is a direct-flow jet nozzle.

9. The backwashing device for a novel yellow phosphorus slag water separator according to claim 2, characterized in that: The level gauge (7) is a float level gauge.

10. The backwashing device for a novel yellow phosphorus slag water separator according to claim 1, characterized in that: The bottom of the water collection tank (6) is also provided with a drainage pipe (11), and the drainage pipe (11) is provided with a corresponding valve.

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