A new type of automatic quantitative feeding mechanism for ferrous chloride cracking furnace

Abstract

The present invention provides a new type of automatic quantitative feeding mechanism for a ferrous chloride cracking furnace, and relates to the technical field of the hot-dip galvanizing industry. The new type of automatic quantitative feeding mechanism comprises a frame, a sealed box is fixedly connected to the middle position on the left side of the top of the frame, a connecting flange is passed through and fixedly connected to the middle position on the left side of the sealed box, a weighing mechanism is provided on the top of the sealed box, and a feeding hopper is fixedly connected to the left end of the feeding rod. The ferrous chloride in the hopper with a gate valve is weighed by a weighing sensor, the electric slide operates to make the sliding seat slide to the left on the electric slide, and the feeding hopper is moved into the cracking furnace, and then the servo motor operates to drive the feeding hopper to rotate 180 degrees through the feeding rod, and the ferrous chloride on the feeding hopper is dumped into the cracking furnace, and the ferrous chloride is automatically and quantitatively transported into the cracking furnace, and the transported weight is accurately controlled, which is worthy of vigorous promotion.

Description

Technical Field

[0001] The invention relates to the technical field of hot-dip galvanizing industry, in particular to a novel automatic quantitative feeding mechanism for a ferrous chloride cracking furnace. Background Art

[0002] A cracking furnace is a device used to crack hydrocarbons. During the process of recovering HCl gas by cracking FeCl generated during hot-dip galvanizing, the cracking furnace needs to regularly and quantitatively deliver ferrous chloride into the furnace. During the operation, hydrochloric acid solution is needed to dissolve and clean the FeCl residue attached to the feed hopper.

[0003] The HCl gas generated by cracking in the furnace may overflow the furnace, and the hydrochloric acid solution used for dissolving and cleaning will also volatilize the HCl gas, which will pollute the environment. In addition, the weight cannot be accurately controlled when transporting ferrous chloride into the cracking furnace, and the degree of automation is low. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a new mechanism for automatic quantitative feeding of ferrous chloride cracking furnace, which solves the problems that HCl gas volatilized in the existing cracking furnace will pollute the environment and the weight cannot be accurately controlled when transporting ferrous chloride into the cracking furnace.

[0006] (2) Technical solution

[0007] To achieve the above object, the present invention is implemented by the following technical scheme: a novel mechanism for automatic quantitative feeding of a ferrous chloride cracking furnace, comprising a frame, a sealed box fixedly connected to the left middle position of the frame top, a crossbeam fixedly connected between the middle positions of the frame bottom, a solution tank fixedly connected to the left side of the crossbeam top, and the left side of the solution tank is fixedly connected to the frame, a water pump is passed through and fixedly connected to the right side of the solution tank, a water outlet of the water pump is fixedly connected to a water outlet pipe, the top of the water outlet pipe passes through the sealed box and is fixedly connected to a nozzle, a box cover is provided on the top of the sealed box, a connecting flange is passed through and fixedly connected to the left middle position of the sealed box, and the right end of the connecting flange is connected to the cracking furnace.

[0008] Preferably, a fixed seat is fixedly connected to the middle position on the top right side of the frame, an electric slide is fixedly connected to the top of the fixed seat, a sliding seat is slidably connected in the electric slide, a material rod seat is fixedly connected to the top of the sliding seat, a servo motor is fixedly connected to the right side of the top of the material rod seat, the output end of the servo motor is fixedly connected to the feeding rod and the left end of the feeding rod passes through the sealing box and is located in the connecting flange, the left end of the feeding rod is fixedly connected to the feeding hopper, a reciprocating feeding mechanism is provided at the front end of the feeding hopper, the reciprocating feeding mechanism includes a feeding rod belt, the front end of the feeding hopper is fixedly connected to the feeding rod belt and one end of the feeding rod belt is fixedly connected to the frame.

[0009] Preferably, a support seat is fixedly connected to the left side of the top of the fixed seat, a roller is rotatably connected between the top of the support seat and the feeding rod is slidably connected on the roller, the rod sleeve of the support seat is fixedly connected to the sealing box, a sealing ring is passed through and fixedly connected to the middle position of the left side of the support seat, and the sealing ring passes through and is fixedly connected to the sealing box, and the feeding rod is slidably connected in the sealing ring.

[0010] Preferably, a weighing mechanism is provided on the top of the sealing box, and the weighing mechanism includes a weighing sensor, a hopper with a gate valve and an accordion cover. The weighing sensor is fixedly connected to the middle position of the top of the sealing box, the top of the weighing sensor is fixedly connected to the hopper with a gate valve, the top of the hopper with a gate valve is fixedly connected to the accordion cover, and a controller is fixedly connected to the inner wall in the middle position of the top of the frame, and the controller is electrically connected to the weighing sensor and the hopper with a gate valve, respectively.

[0011] Preferably, an observation window is passed through and fixedly connected to the left side of the front end of the sealed box, and an air collecting hood is passed through and fixedly connected to the middle position of the rear end of the sealed box.

[0012] Preferably, an inner splash shield is fixedly connected to the inner wall in the middle position of the rear end of the sealed box, a flow guide cover is fixedly connected to the inner wall in the middle position of the front end of the gas collecting hood, and the flow guide cover and the inner splash shield are connected, and an HCI gas recovery device is connected to the top of the gas collecting hood.

[0013] Preferably, the accordion cover is in contact with the discharge port of the screw conveyor, and the receiving pipe and the discharge pipe of the hopper with the gate valve are respectively inserted into the discharge port of the screw conveyor and the sealing box.

[0014] Preferably, the method for using the novel automatic quantitative feeding mechanism comprises the following steps:

[0015] First, the screw conveyor works to make the ferrous chloride fall through the discharge port into the hopper with a gate valve. The ferrous chloride in the hopper with a gate valve is weighed by a weighing sensor. When the set weight is reached, the controller closes the gate valve on the hopper with a gate valve to stop the material discharge.

[0016] Then the electric slide works to make the slide seat slide to the left on the electric slide, moving the feed hopper into the cracking furnace. Then the servo motor works to drive the feed hopper to rotate 180 degrees through the feeding rod, and pours the ferrous chloride on the feed hopper into the cracking furnace.

[0017] Then the servo motor works again to drive the feed hopper to rotate 180° and return to the center position. The sliding seat slides to the right on the electric slide to make the feed hopper return to the cleaning position in the sealing box. Then the water pump works to draw the solution in the solution tank into the outlet pipe and flush the feed hopper through the nozzle. After the flushing is completed, the servo motor works to drive the feed hopper to rotate 180° and pour out the hydrochloric acid solution in the feed hopper. The hydrochloric acid solution flows into the solution tank through the reflux pipe. Then the servo motor works to drive the feed hopper to continue to rotate 180° and return to the center position. The electric slide continues to move to stop the feed hopper at the blanking position, thus completing a cycle.

[0018] Working principle: The screw conveyor works to make ferrous chloride fall into the hopper with gate valve through the discharge port, and the ferrous chloride in the hopper with gate valve is weighed by the weighing sensor. When the set weight is reached, the gate valve on the hopper with gate valve is closed by the controller to stop unloading. Then the electric slide works to make the sliding seat slide to the left on the electric slide, and the feeding hopper is moved to the cracking furnace. Then the servo motor works to drive the feeding hopper to rotate 180 degrees through the feeding rod, and the ferrous chloride on the feeding hopper is dumped into the cracking furnace. The ferrous chloride is automatically and quantitatively fed into the cracking furnace. After the feeding is completed, the servo motor works again to drive the feeding hopper to rotate 180 degrees back to the center, and the sliding seat slides to the right on the electric slide to make the feeding hopper Return to the cleaning position in the sealed box, and then the water pump will work to draw the solution in the solution box into the water outlet pipe to flush the feed hopper through the nozzle. After the flushing is completed, the servo motor will work to drive the feed hopper to rotate 180 degrees, pouring out the hydrochloric acid solution in the feed hopper. The hydrochloric acid solution flows into the solution box through the reflux pipe to achieve circulation. There are ventilation holes on the top of the internal splash shield, which can effectively prevent the hydrochloric acid solution from splashing out of the box through the ventilation holes when spraying. When the cracking furnace needs fresh air, air enters the sealed box through the gas collecting hood at atmospheric pressure, and then enters the cracking furnace through the connecting flange. When the cracking furnace pressure is higher than the atmospheric pressure due to some instantaneous reason, the HCl gas entering the sealed box through the connecting flange is discharged through the gas collecting hood and collected by the HCl gas recovery device.

[0019] (3) Beneficial effects

[0020] The present invention provides a novel mechanism for automatic quantitative feeding of ferrous chloride cracking furnaces. It has the following beneficial effects:

[0021] 1. The present invention causes ferrous chloride to fall into a hopper with a gate valve through a discharge port by operating a screw conveyor, and the ferrous chloride in the hopper with the gate valve is weighed by a weighing sensor. When the set weight is reached, the gate valve on the hopper with the gate valve is closed by a controller to stop the discharge, and then the electric slide is operated to cause the sliding seat to slide leftward on the electric slide to move the feed hopper into the cracking furnace. Then, the servo motor is operated to drive the feed hopper to rotate 180 degrees through the feeding rod, and the ferrous chloride on the feed hopper is dumped into the cracking furnace. The ferrous chloride is automatically and quantitatively transported into the cracking furnace, thereby improving the automation level of the production equipment and achieving precise control of the transported weight.

[0022] 2. The present invention drives the feed hopper to rotate 180 ° and returns to the center position by the servomotor again working, slides to the right on the electric slide by the sliding seat so that the feed hopper returns to the cleaning position in the sealed box, and the water pump works to draw the solution in the solution box into the water outlet pipe and rinses the feed hopper through the nozzle. After the flushing is completed, the servomotor works and drives the feed hopper to rotate 180 °, and the hydrochloric acid solution in the feed hopper is poured out. The hydrochloric acid solution flows into the solution box through the return pipe and realizes circulation. There are vents on the inner splash shield top, which can effectively prevent the hydrochloric acid solution from splashing outside the box through the vents when spraying. When the cracking furnace needs fresh air, air enters the sealed box through the air collecting hood at atmospheric pressure and then enters the cracking furnace through the connecting flange. When the cracking furnace air pressure is higher than atmospheric pressure due to a certain instantaneous reason, the HCl gas entering the sealed box by the connecting flange is discharged through the air collecting hood and is collected by the HCl gas recovery device. The HCl gas generated in the ferrous chloride cracking process and the HCl gas volatilized in the feeding cleaning process are effectively prevented from overflowing into the atmospheric environment, thus avoiding environmental pollution. It is worth promoting vigorously. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the present invention;

[0024] Figure 2 A top view of the present invention;

[0025] Figure 3 is a side view of the present invention;

[0026] Figure 4 It is a structural diagram of the sealing box of the present invention;

[0027] Figure 5 This is a diagram showing the internal structure of the sealed box of the present invention;

[0028] Figure 6 for Figure 1 Enlarged view of point A in the middle.

[0029] Among them, 1. Controller; 2. Sealing box; 3. Weighing mechanism; 4. Solution box; 5. Frame; 6. Connecting flange; 7. Observation window; 8. Box cover; 9. Inner splash shield; 10. Flow guide cover; 11. Gas collecting cover; 12. Weighing sensor; 13. Hopper with gate valve; 14. Organ cover; 15. Water pump; 16. Water outlet pipe; 17. Feed hopper; 18. Electric slide; 19. Servo motor; 20. Rod seat; 21. Feed rod; 22. Crossbeam; 23. Fixed seat; 24. Nozzle; 25. Return pipe; 26. Support seat; 27. Sliding seat; 28. Sealing ring; 29. Roller. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1:

[0032] like Figure 1-6 As shown, an embodiment of the present invention provides a novel automatic quantitative feeding mechanism for a ferrous chloride cracking furnace, comprising a frame 5, a sealed box 2 fixedly connected to the middle position on the left side of the top of the frame 5, a crossbeam 22 fixedly connected between the middle positions of the bottom of the frame 5, a solution tank 4 fixedly connected to the left side of the top of the crossbeam 22, and a fixed connection between the left side of the solution tank 4 and the frame 5, a water pump 15 passing through and fixedly connected to the right side of the solution tank 4, a water outlet of the water pump 15 fixedly connected to a water outlet pipe 16, a top end of the water outlet pipe 16 passing through the sealed box 2 and fixedly connected to a nozzle 24, a box cover 8 provided on the top of the sealed box 2, a connecting flange 6 passing through and fixedly connected to the middle position on the left side of the sealed box 2, and a right end of the connecting flange 6 is connected to the cracking furnace.

[0033] A fixed seat 23 is fixedly connected to the middle position on the top right side of the frame 5, and an electric slide 18 is fixedly connected to the top of the fixed seat 23. A sliding seat 27 is slidably connected in the electric slide 18. A material rod seat 20 is fixedly connected to the top of the sliding seat 27, and a servo motor 19 is fixedly connected to the right side of the top of the material rod seat 20. The output end of the servo motor 19 is fixedly connected to the feeding rod 21 and the left end of the feeding rod 21 passes through the sealing box 2 and is located in the connecting flange 6. The left end of the feeding rod 21 is fixedly connected to the feeding hopper 17, and a reciprocating feeding mechanism 1 is provided at the front end of the feeding hopper 17. The reciprocating feeding mechanism 1 includes a feeding rod belt 20, and the front end of the feeding hopper 17 is fixedly connected to the feeding rod belt 20 and one end of the feeding rod belt 20 is fixedly connected to the frame 5.

[0034] A support seat is fixedly connected to the left side of the top of the fixed seat, a roller is rotatably connected between the top of the support seat and the feeding rod 21 is slidably connected on the roller 29, the rod sleeve of the support seat 26 is fixedly connected to the sealing box 2, and a sealing ring 28 is passed through and fixedly connected to the middle position on the left side of the support seat 26, and the sealing ring 28 passes through and is fixedly connected to the sealing box 2, and the feeding rod 21 is slidably connected in the sealing ring 28.

[0035] A weighing mechanism 3 is provided on the top of the sealed box 2. The weighing mechanism 3 includes a weighing sensor 12, a hopper with a gate valve 13 and an organ cover 14. The weighing sensor 12 is fixedly connected to the middle position of the top of the sealed box 2. The top of the weighing sensor 12 is fixedly connected to the hopper with a gate valve 13. The top of the hopper with a gate valve 13 is fixedly connected to the organ cover 14. A controller 1 is fixedly connected to the inner wall of the middle position of the top of the frame 5 and the controller 1 is electrically connected to the weighing sensor 12 and the hopper with a gate valve 13 respectively. The ferrous chloride is dropped into the hopper with a gate valve 13 through the discharge port by the screw conveyor. The sensor 12 weighs the ferrous chloride in the hopper 13 with a gate valve. When the set weight is reached, the controller 1 closes the gate valve on the hopper 13 with a gate valve to stop feeding. Then the electric slide 18 operates to make the sliding seat 27 slide to the left on the electric slide 18, moving the feeding hopper 17 into the cracking furnace. Then the servo motor 19 operates to drive the feeding hopper 17 to rotate 180 degrees through the feeding rod 21, dumping the ferrous chloride on the feeding hopper 17 into the cracking furnace, and automatically and quantitatively delivering the ferrous chloride to the cracking furnace, thereby improving the automation level of the production equipment and achieving precise control of the delivered weight.

[0036] An observation window 7 is passed through and fixedly connected to the left side of the front end of the sealed box 2, through which the internal working status of the sealed box 2 can be viewed. An air collecting hood 11 is passed through and fixedly connected to the middle position of the rear end of the sealed box 2.

[0037] An inner splash shield 9 is fixedly connected to the inner wall in the middle position at the rear end of the sealing box 2, a guide cover 10 is fixedly connected to the inner wall in the middle position at the front end of the gas collecting cover 11, and the guide cover 10 and the inner splash shield 9 are connected, and the top of the gas collecting cover 11 is connected to the HCI gas recovery device. After the feeding is completed, the servo motor 19 works again to drive the feeding hopper 17 to rotate 180 degrees and return to the center, and slides to the right on the electric slide 18 through the sliding seat 27 to make the feeding hopper 17 return to the cleaning position in the sealing box 2, and then the water pump 15 works to draw the solution in the solution tank 4 into the outlet pipe 16 to flush the feeding hopper 17 through the nozzle 24. After the flushing is completed, the servo motor 19 works to drive the feeding hopper 17 to rotate 180 degrees, and the hydrochloric acid in the feeding hopper 17 is discharged. Solution is poured away, and hydrochloric acid soln flows to and realizes circulation in the solution box 4 by return line 25, and there are ventilating holes on interior splash shield 9 tops, can effectively prevent that hydrochloric acid soln from splashing outside the casing by ventilating holes when spraying, when the cracking furnace needs fresh air, air enters in the sealed box 2 by gas collecting cover 11 under atmospheric pressure, enter in the cracking furnace by connecting flange 6 again, when owing to certain instantaneous reason cracking furnace gas pressure being higher than atmospheric pressure, the HCl gas that enters in the sealed box 2 by connecting flange 6 is discharged by gas collecting cover 11, collected by the HCl gas recovery device, effectively prevent that the HCl gas that produces in the ferrous chloride cracking process and the HCl gas that volatilizes in the feeding cleaning process overflow into the atmospheric environment, avoided environmental pollution.

[0038] The accordion cover 14 is in contact with the discharge port of the screw conveyor, and the material receiving pipe and the discharge pipe of the hopper 13 with a gate valve are respectively inserted into the discharge port of the screw conveyor and the sealing box 2.

[0039] Example 2:

[0040] like Figure 1-6 As shown, an embodiment of the present invention provides a novel automatic quantitative feeding mechanism for a ferrous chloride cracking furnace, and a method for using the novel automatic quantitative feeding mechanism includes the following steps:

[0041] First, the screw conveyor works to make the ferrous chloride fall into the hopper with a gate valve 13 through the discharge port. The ferrous chloride in the hopper with a gate valve 13 is weighed by the weighing sensor 12. When the set weight is reached, the controller 1 closes the gate valve on the hopper with a gate valve 13 to stop the material discharge.

[0042] Then the electric slide 18 works to make the sliding seat 27 slide to the left on the electric slide 18, moving the feed hopper 17 into the cracking furnace, and then the servo motor 19 works to drive the feed hopper 17 to rotate 180 degrees through the feeding rod 21, pouring the ferrous chloride on the feed hopper 17 into the cracking furnace;

[0043] Then the servo motor 19 works again to drive the feeding hopper 17 to rotate 180° and return to the center, and slides to the right on the electric slide 18 through the sliding seat 27 to make the feeding hopper 17 return to the cleaning position in the sealing box 2, and then the water pump 15 works to draw the solution in the solution tank 4 into the water outlet pipe 16 to flush the feeding hopper 17 through the nozzle 24. After the flushing is completed, the servo motor 19 works to drive the feeding hopper 17 to rotate 180°, and pour out the hydrochloric acid solution in the feeding hopper 17. The hydrochloric acid solution flows into the solution tank 4 through the reflux pipe 25, and then the servo motor 19 works to drive the feeding hopper to continue to rotate 180° and return to the center, and the electric slide 18 continues to move, so that the feeding hopper 17 stops at the blanking position, thus completing a cycle.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A novel mechanism for automatic quantitative feeding of ferrous chloride cracking furnace, comprising a frame (5), characterized in that: A sealed box (2) is fixedly connected to the middle position of the left top of the frame (5); a crossbeam (22) is fixedly connected between the middle positions of the bottom of the frame (5); a solution box (4) is fixedly connected to the left top of the crossbeam (22), and the left side of the solution box (4) is fixedly connected to the frame (5); a water pump (15) is passed through and fixedly connected to the right side of the solution box (4); a water outlet of the water pump (15) is fixedly connected to a water outlet pipe (16); the top of the water outlet pipe (16) passes through the sealed box (2) and is fixedly connected to a nozzle (24); a box cover (8) is provided on the top of the sealed box (2); a connecting flange (6) is passed through and fixedly connected to the middle position of the left side of the sealed box (2), and the right end of the connecting flange (6) is connected to the cracking furnace; A fixed seat (23) is fixedly connected to the middle position on the right side of the top of the frame (5), an electric slide (18) is fixedly connected to the top of the fixed seat (23), a sliding seat (27) is slidably connected inside the electric slide (18), a material rod seat (20) is fixedly connected to the top of the sliding seat (27), a servo motor (19) is fixedly connected to the right side of the top of the material rod seat (20), an output end of the servo motor (19) is fixedly connected to a feeding rod (21), and the left end of the feeding rod (21) passes through the sealing box (2) and is located in the connecting flange (6), and the left end of the feeding rod (21) is fixedly connected to the feeding hopper (17); The left side of the top of the fixed seat (23) is fixedly connected to a support seat (26); a roller (29) is rotatably connected between the top of the support seat (26) and the feeding rod (21) is slidably connected on the roller (29); the rod sleeve of the support seat (26) is fixedly connected to the sealing box (2); a sealing ring (28) is passed through and fixedly connected to the middle position of the left side of the support seat (26); the sealing ring (28) passes through and is fixedly connected to the sealing box (2); and the feeding rod (21) is slidably connected in the sealing ring (28).

2. The novel mechanism for automatic quantitative feeding of a ferrous chloride cracking furnace according to claim 1, characterized in that: A weighing mechanism (3) is provided on the top of the sealing box (2), and the weighing mechanism (3) includes a weighing sensor (12), a hopper with a gate valve (13) and an accordion cover (14). The weighing sensor (12) is fixedly connected to the middle position of the top of the sealing box (2), the top of the weighing sensor (12) is fixedly connected to the hopper with a gate valve (13), and the top of the hopper with a gate valve (13) is fixedly connected to the accordion cover (14). A controller (1) is fixedly connected to the inner wall of the middle position of the top of the frame (5), and the controller (1) is electrically connected to the weighing sensor (12) and the hopper with a gate valve (13).

3. The novel mechanism for automatic quantitative feeding of a ferrous chloride cracking furnace according to claim 1, characterized in that: An observation window (7) is passed through and fixedly connected to the left side of the front end of the sealing box (2), and an air collecting hood (11) is passed through and fixedly connected to the middle position of the rear end of the sealing box (2).

4. The novel automatic quantitative feeding mechanism for a ferrous chloride cracking furnace according to claim 3, characterized in that: An inner splash shield (9) is fixedly connected to the inner wall at the middle position of the rear end of the sealing box (2); a flow guide cover (10) is fixedly connected to the inner wall at the middle position of the front end of the gas collecting cover (11); the flow guide cover (10) and the inner splash shield (9) are connected; and an HCl gas recovery device is connected to the top of the gas collecting cover (11).

5. The novel automatic quantitative feeding mechanism for a ferrous chloride cracking furnace according to claim 2, characterized in that: The accordion cover (14) is in contact with the discharge port of the screw conveyor, and the receiving pipe and the discharge pipe of the hopper (13) with a gate valve are respectively inserted into the discharge port of the screw conveyor and the sealing box (2).

6. The novel automatic quantitative feeding mechanism for a ferrous chloride cracking furnace according to claim 1, characterized in that: The method for using the novel automatic quantitative feeding mechanism comprises the following steps: First, the screw conveyor operates to cause the ferrous chloride to fall into the hopper (13) with the gate valve through the discharge port, and the ferrous chloride in the hopper (13) with the gate valve is weighed by the weighing sensor (12). When the set weight is reached, the gate valve on the hopper (13) with the gate valve is closed by the controller (1) to stop the discharge; Subsequently, the electric slide (18) operates to cause the slide seat (27) to slide to the left on the electric slide (18), and the feed hopper (17) is moved into the cracking furnace. Then, the servo motor (19) operates to drive the feed hopper (17) to rotate 180° through the feed rod (21), and the ferrous chloride on the feed hopper (17) is poured into the cracking furnace. Then the servo motor (19) works again to drive the feeding hopper (17) to rotate 180° and return to the center position, and slides rightward on the electric slide (18) through the sliding seat (27) so that the feeding hopper (17) returns to the cleaning position in the sealing box (2). Then the water pump (15) works to draw the solution in the solution box (4) into the water outlet pipe (16) and flushes the feeding hopper (17) through the nozzle (24). After the flushing is completed, the servo motor (19) works to drive the feeding hopper (17) to rotate 180°, and the hydrochloric acid solution in the feeding hopper (17) is poured out. The hydrochloric acid solution flows into the solution box (4) through the reflux pipe (25). Then the servo motor (19) works to drive the feeding hopper to continue to rotate 180° and return to the center position. The electric slide (18) continues to move, so that the feeding hopper (17) stops at the blanking position, thus completing a cycle.

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