Reaction kettle dosing system

Abstract

The utility model discloses a reaction kettle dosing system which comprises a reaction kettle, a first liquid inlet is formed in the top of the reaction kettle, a medicament metering tank is arranged above the reaction kettle, a vacuum port and a second liquid inlet are formed in the top of the medicament metering tank, a liquid outlet is formed in the bottom of the medicament metering tank, and an overflow port is formed in the side part of the medicament metering tank; the second liquid inlet of the medicament metering tank is communicated with the outlet of the medicament storage tank, the vacuum port is communicated with the vacuumizing unit, the liquid discharge port is communicated with the first liquid inlet of the reaction kettle, and the overflow port is communicated with the inlet of the medicament reflux tank. The liquid discharging valve is controlled to be opened and closed through the scales on the tank body of the chemical metering tank, chemical is quantitatively added into the reaction kettle, the chemical amount is accurately controlled, chemical waste can be avoided, the situation that the color of a product is affected by insufficient chemical can be avoided, the production cost is saved, and the chemical adding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of precious metal refining equipment, in particular to a reaction kettle dosing system. Background Art

[0002] The precious metal refining industry mainly adopts wet separation and purification technology, that is, adding strong acid (concentrated hydrochloric acid, concentrated nitric acid), strong alkali or other chemical agents into the reactor to achieve the purpose of precious metal separation and purification through chemical reaction. At present, most precious metal refining companies adopt manual addition of liquid agents such as strong acid and strong alkali into the reactor. Manual addition of chemical agents has the following problems: (1) The error of manual addition of agents is large, and the amount of agents cannot be accurately measured. Excessive addition of agents will cause waste of agents, and insufficient addition of agents will affect the color of the product; (2) The added liquid agents are highly corrosive, and manual addition has great safety hazards; (3) Manual addition requires multiple trips between the reactor and the storage tank, which is labor-intensive and inefficient; (4) When adding drugs manually, the agents will evaporate and produce a pungent odor, resulting in a bad production site environment and affecting the health of workers. Utility Model Content

[0003] The utility model provides a reactor dosing system, aiming to solve the problems of inaccurate dosage of medicines, low dosing efficiency and great potential safety hazards in the existing manual dosing method.

[0004] To achieve its purpose, the utility model adopts the following technical solutions:

[0005] A reactor dosing system comprises a reactor, a first liquid inlet is arranged on the top of the reactor, a reagent metering tank is arranged above the reactor, a vacuum port and a second liquid inlet are arranged on the top of the reagent metering tank, a liquid discharge port is arranged at the bottom, and an overflow port is arranged on the side;

[0006] The second liquid inlet of the medicine metering tank is connected to the outlet of the medicine storage tank through a pipeline, and a liquid inlet valve is provided on the pipeline; the vacuum port of the medicine metering tank is connected to the vacuum pumping unit through a pipeline, and a vacuum pumping valve and an emptying valve are provided on the pipeline; the liquid discharge port of the medicine metering tank is connected to the first liquid inlet of the reactor through a pipeline, and a liquid discharge valve is provided on the pipeline; the overflow port of the medicine metering tank is connected to the inlet of the medicine reflux tank through a pipeline, the outlet of the medicine reflux tank is connected to the inlet of the delivery pump through a pipeline, the outlet of the delivery pump is connected to the inlet of the medicine storage tank, and a float liquid level switch is provided in the medicine reflux tank;

[0007] The float liquid level switch is electrically connected to the signal input end of the PLC programmable controller, and the delivery pump is electrically connected to the signal output end of the PLC programmable controller.

[0008] Preferably, the distance between the bottom of the reagent metering tank and the top of the reactor is 500-1500 mm.

[0009] Preferably, the overflow port is located 10-20 mm lower than the vacuum port.

[0010] Preferably, the diameter of the overflow port is 5-10 mm larger than the diameter of the liquid inlet.

[0011] Preferably, the body of the medicine metering tank is provided with scales.

[0012] Compared with the prior art, the effective effects of the utility model are as follows:

[0013] 1. The reactor dosing system provided by the utility model is provided with a reagent metering tank. The opening and closing of the liquid discharge valve is controlled by observing the scale on the tank body of the reagent metering tank, and quantitative dosing of the reagent into the reactor is achieved to achieve precise control of the amount of the reagent, which can avoid the waste of the reagent and the situation that insufficient reagent affects the product quality, save production costs, and improve the dosing efficiency.

[0014] 2. The reactor dosing system provided by the utility model has the following advantages: during the dosing process, the staff only needs to operate the relevant valves to transport and add the reagents, and there is no need to come into direct contact with the reagents. The operation is convenient, the labor intensity is low, and the safety is high, eliminating the potential safety hazard of corrosion and injury caused by highly corrosive chemical reagents.

[0015] 3. The reactor dosing system provided by the utility model adopts closed equipment, which effectively reduces the leakage of chemical gases in the production process, avoids the volatilization of chemical agents to pollute the production site, ensures the safety of the production environment, clean operating equipment, and prevents corrosive reagents from causing harm to the operator's body.

[0016] 4. The reactor dosing system provided by the utility model is provided with an overflow port and connected to the reagent reflux tank. On the one hand, overflow protection is provided for the chemical reagents in the reagent metering tank, eliminating the risk of leakage caused by reagent overflow and ensuring the personal safety of the staff. On the other hand, the reagent in the reagent reflux tank can be transported to the reagent storage tank for recycling through a delivery pump, which greatly saves production costs.

[0017] 5. The reactor dosing system provided by the utility model has a float liquid level switch in the reagent reflux tank, the float liquid level switch is electrically connected to the signal input terminal of the PLC programmable controller, and the delivery pump is electrically connected to the signal output terminal of the PLC programmable controller. When the reagent in the reagent reflux tank reaches the set high liquid level, the float rises accordingly, the float liquid level switch closes, the PLC programmable controller issues a start command, starts the delivery pump, and delivers the reagent in the reagent reflux tank to the reagent storage tank. When the reagent in the reagent reflux tank reaches the set low liquid level, the float drops accordingly, the float liquid level switch is disconnected, and the PLC programmable controller issues a stop command to stop the delivery pump. The overall system is intelligently controlled, easy to operate, and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the reactor dosing system of the utility model;

[0019] In the figure: 1-vacuum valve; 2-drain valve; 3-medicine metering tank; 4-liquid discharge valve; 5-reactor; 6-medicine reflux tank; 7-float liquid level switch; 8-transfer pump; 9-overflow port; 10-first liquid inlet; 11-vacuum port; 12-second liquid inlet; 13-liquid discharge port; 14-medicine storage tank; 15-liquid inlet valve; 16-vacuum unit. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 As shown, the utility model is a reactor dosing system, comprising a reactor 5, a first liquid inlet 10 is provided on the top of the reactor 5, a medicine metering tank 3 is provided above the reactor 5, the distance between the bottom of the medicine metering tank 3 and the top of the reactor 5 is 500 mm, and a scale is provided on the tank body of the medicine metering tank 3; a vacuum port 11 and a second liquid inlet 12 are provided on the top of the medicine metering tank 3, a liquid discharge port 13 is provided on the bottom, and an overflow port 9 is provided on the side; wherein, the position of the overflow port 9 is 10 mm lower than that of the vacuum port 11, and the diameter of the overflow port 9 is 10 mm larger than that of the liquid inlet 12.

[0022] The second liquid inlet 12 of the medicine metering tank 3 is connected to the outlet of the medicine storage tank 14 through a pipeline, and a liquid inlet valve 15 is provided on the pipeline; the vacuum port 11 of the medicine metering tank 3 is connected to the vacuum pumping unit 16 through a pipeline, and a vacuum pumping valve 1 and an emptying valve 2 are provided on the pipeline; the liquid discharge port 13 of the medicine metering tank 3 is connected to the first liquid inlet 10 of the reactor 5 through a pipeline, and a liquid discharge valve 4 is provided on the pipeline; the overflow port 9 of the medicine metering tank 3 is connected to the inlet of the medicine reflux groove 6 through a pipeline, the outlet of the medicine reflux groove 6 is connected to the inlet of the delivery pump 8 through a pipeline, the outlet of the delivery pump 8 is connected to the inlet of the medicine storage tank 14, and a float liquid level switch 7 is provided in the medicine reflux groove 6.

[0023] The float liquid level switch 7 is electrically connected to the signal input terminal of the PLC programmable controller, and the delivery pump 8 is electrically connected to the signal output terminal of the PLC programmable controller.

[0024] When adding medicine to the reactor 5, close the drain valve 2 and the drain valve 4, open the vacuum valve 1 and the inlet valve 15, and the medicine in the medicine storage tank 14 is transported to the medicine metering tank 3 through the pipeline. After the medicine is transported, close the vacuum valve 1 and the inlet valve 15, open the drain valve 2 and the drain valve 4, and the medicine in the medicine metering tank 3 flows to the reactor 5 through the high and low positions. During the drug addition process, the amount of medicine added is controlled according to the scale lines on the body of the medicine metering tank 3. After the addition of the medicine is completed, close the drain valve 2 and the drain valve 4.

[0025] Since the overflow port 9 of the medicine metering tank 3 is connected to the entrance of the medicine reflux tank 6 through a pipeline, when there is too much medicine in the medicine metering tank 3, it will overflow to the medicine reflux tank 6 for temporary storage. A float liquid level switch 7 is provided in the medicine reflux tank 6. When the medicine in the medicine reflux tank 6 reaches the set high liquid level, the float rises accordingly, the float liquid level switch 7 is closed, and the PLC programmable controller issues a start command to start the delivery pump 8 to deliver the medicine in the medicine reflux tank 6 to the medicine storage tank 14. When the medicine in the medicine reflux tank 6 reaches the set low liquid level, the float drops accordingly, the float liquid level switch 7 is disconnected, and the PLC programmable controller issues a stop command to stop the delivery pump 8.

Claims

1. A reactor dosing system, comprising a reactor (5), wherein a first liquid inlet (10) is provided at the top of the reactor (5), and wherein: A medicine metering tank (3) is provided above the reaction kettle (5); a vacuum port (11) and a second liquid inlet (12) are provided at the top of the medicine metering tank (3); a liquid discharge port (13) is provided at the bottom; and an overflow port (9) is provided at the side. The second liquid inlet (12) of the medicine metering tank (3) is connected to the outlet of the medicine storage tank (14) through a pipeline, and a liquid inlet valve (15) is provided on the pipeline; the vacuum port (11) of the medicine metering tank (3) is connected to the vacuum pumping unit (16) through a pipeline, and a vacuum pumping valve (1) and an emptying valve (2) are provided on the pipeline; the liquid discharge port (13) of the medicine metering tank (3) is connected to the first liquid inlet (10) of the reaction kettle (5) through a pipeline, and a liquid discharge valve (4) is provided on the pipeline; the overflow port (9) of the medicine metering tank (3) is connected to the inlet of the medicine reflux groove (6) through a pipeline, the outlet of the medicine reflux groove (6) is connected to the inlet of the delivery pump (8) through a pipeline, the outlet of the delivery pump (8) is connected to the inlet of the medicine storage tank (14), and a float liquid level switch (7) is provided in the medicine reflux groove (6); The float liquid level switch (7) is electrically connected to a signal input terminal of a PLC programmable controller, and the delivery pump (8) is electrically connected to a signal output terminal of the PLC programmable controller.

2. A reactor dosing system according to claim 1, characterized in that: The distance between the bottom of the reagent metering tank (3) and the top of the reaction kettle (5) is 500-1500 mm.

3. A reactor dosing system as claimed in claim 2, characterized in that: The overflow port (9) is located 10-20 mm lower than the vacuum port (11).

4. A reactor dosing system as claimed in claim 3, characterized in that: The caliber of the overflow port (9) is 5-10 mm larger than the caliber of the second liquid inlet (12).

5. A reactor dosing system according to any one of claims 1 to 4, characterized in that: The medicine measuring tank (3) is provided with scales on its body.

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