A mixed reactor for hot-dip galvanizing waste acid treatment

Abstract

The present invention discloses a mixed reactor for treating hot-dip galvanized waste acid, which relates to the technical field of reactors. The reactor comprises a reactor, a stirring rod, and a slag discharge port. An electric push rod is installed at the bottom end of the stirring rod, and a compensation rod is connected to the end of the electric push rod. A pressure sensor for controlling the compensation rod is installed at the bottom of the inner wall of the reactor. A pressing head is fixed to the bottom end of the compensation rod, and a filter is provided at the end of the internal cavity of the pressing head. A one-way valve is installed in the cavity. A sealing blade and a slag discharge blade are installed on the inner wall of the slag discharge port, and the sealing blade and the slag discharge blade are respectively connected to a sealing assembly and a slag discharge assembly. A slag scraping assembly is installed on the inner wall of the reactor. The present invention avoids the cumbersome process of transporting the precipitate to a filter press for secondary dehydration in the traditional process by providing the electric push rod, the pressing head, the sealing assembly, and the slag discharge assembly. The reactor can directly discharge the precipitate after squeezing, shortening the workflow and improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of reactors, in particular to a mixed reactor for treating hot-dip galvanizing waste acid. Background Art

[0002] A reactor is a sealed container used for physical or chemical reactions, widely used in the chemical, pharmaceutical, metallurgical, and environmental protection industries. Its main structure consists of the reactor body, agitator, heating / cooling system, sealing device, and control system. Mostly constructed of stainless steel, titanium alloy, or glass-lined, it can withstand high temperatures, high pressures, and highly corrosive media. By precisely controlling temperature, pressure, and stirring speed, reactors can efficiently complete processes such as synthesis, polymerization, neutralization, and crystallization. Depending on requirements, they can also be equipped with multi-stage stirring, online monitoring, and automated feeding to ensure the safety and stability of the reaction process. They are essential core equipment in modern industry.

[0003] In the hot-dip galvanizing industry, the application of mixed reactors is particularly critical. The waste acid generated during the hot-dip galvanizing process contains high concentrations of zinc ions, iron ions and free acid. The process requires the use of mixed reactors for neutralization, precipitation, oxidation-reduction and other steps to achieve heavy metal recovery and acid regeneration. After the reaction is completed, the existing reactor collects the precipitate through the bottom slag discharge valve. However, due to the lack of a dehydration device, the discharged precipitate has a high moisture content and needs to be transported to a filter press or drying equipment for secondary dehydration, which increases workload and work costs and reduces overall process efficiency.

[0004] In response to the above problems, it is urgent to carry out innovative design based on the original foundation. Summary of the Invention

[0005] The purpose of the present invention is to provide a mixed reactor for treating hot-dip galvanizing waste acid, so as to solve the problem in the above-mentioned background technology that the precipitate needs to be transferred to a filter press for secondary dehydration. The technical solution of the present invention addresses the technical problem that the existing technical solution is too single and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a mixing reactor for treating hot-dip galvanized waste acid, comprising a reactor, a stirring rod and a slag discharge port, wherein an electric push rod is installed at the bottom end of the stirring rod, a compensation rod is connected to the extended end of the electric push rod, a pressure sensor for controlling the compensation rod is installed at the bottom of the inner wall of the reactor, a pressing head is fixed at the bottom end of the compensation rod, a filter is provided at the end of the internal cavity of the pressing head, a one-way valve is installed in the cavity, a sealing blade is installed in the upper area of ​​the inner wall of the slag discharge port through a sealing assembly, a slag discharge assembly is installed in the lower area of ​​the inner wall of the slag discharge port through a slag discharge assembly, and a slag scraping assembly is installed on the inner wall of the reactor;

[0007] The sealing assembly includes a sealing driven gear installed on the outer side wall of the sealing blade, and a sealing drive ring rotatably installed on the inner wall of the slag discharge port, the inner wall of the sealing drive ring is provided with teeth that mesh with the sealing driven gear, and also includes a sealing active shaft rotatably installed on the inner wall of the slag discharge port, a sealing active gear meshing with the teeth on the outer side wall of the sealing drive ring is installed at the bottom end of the sealing active shaft, and a first rack and a second rack are installed on both sides of the sealing active shaft in opposite meshing directions.

[0008] Preferably, a sealing rubber pad is installed on the side wall of the pressing head, and the diameter of the pressing head is equal to the diameter of the slag discharge port.

[0009] Preferably, the slag discharge component includes a slag discharge driven gear installed on the outer side wall of the slag discharge blade, and a slag discharge rotating ring rotatably installed on the inner wall of the slag discharge port, the inner wall of the slag discharge rotating ring is provided with teeth that mesh with the slag discharge driven gear, and also includes a slag discharge driving shaft rotatably installed on the inner wall of the slag discharge port, the bottom end of the slag discharge driving shaft is provided with a slag discharge driving gear that meshes with the teeth on the outer side wall of the slag discharge rotating ring, and a third rack and a fourth rack are installed on both sides of the slag discharge driving shaft in opposite directions.

[0010] Preferably, four sealing blades and a slag discharge blade are respectively installed on the inner wall of the slag discharge port, and the sealing blade is located above the slag discharge blade, and the four sealing blades and the slag discharge blade are in a sealed state tightly attached to each other after being rotated and closed.

[0011] Preferably, the first rack, the third rack, the second rack and the fourth rack are arranged vertically in sequence, and the racks are all located above the sealing blades.

[0012] Preferably, the distance between the first rack and the second rack, and the distance between the third rack and the fourth rack is greater than the thickness of the pressing head.

[0013] Preferably, the ends of the first rack and the second rack, and the ends of the third rack and the fourth rack close to the sealing blade are designed to be inclined in opposite directions.

[0014] Preferably, the scraping assembly includes a transmission gear rotatably mounted on the top of the slag discharge active shaft, a rotating piece rotatably mounted on the inner wall of the bottom cavity of the transmission gear, a ratchet corresponding to the rotating piece is mounted on the outer wall of the top of the slag discharge active shaft, and also includes a rotating bracket rotatably mounted on the inner wall of the bottom of the reactor, and a scraper plate is fixed to the outer wall of the rotating bracket.

[0015] Preferably, the outer wall of the rotating bracket is provided with teeth meshing with the transmission gear, and multiple groups of scrapers are fixed to the outer wall of the rotating bracket, and the outer walls of the scrapers are in close contact with the inner wall of the bottom of the reactor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention avoids the cumbersome process of transferring the precipitate to the filter press for secondary dehydration in the traditional process by means of the electric push rod, the pressing head, the sealing assembly and the slag discharge assembly, so that the reactor can directly discharge the precipitate after the pressing is completed, and utilizes the electric push rod to drive the pressing head to enter the slag discharge port. During the movement, the pressing head cooperates with the third rack and the first rack to open the sealing blades and close the slag discharge blades. The pressing head cooperates with the slag discharge blades to squeeze the precipitate located on the inner wall of the slag discharge port, and the moisture in the precipitate will re-enter the reactor through the one-way valve to complete the pressing work. During the process of retraction and resetting of the pressing head, the pressing head cooperates with the fourth rack and the second rack to open the slag discharge blades and close the sealing blades. The precipitate after pressing will be discharged from the reactor through the gap left by the opened slag discharge blades, thereby shortening the work process and improving work efficiency.

[0018] 2. The present invention further improves the efficiency of squeezing sediment by providing a compensation rod, a pressure sensor and a scraping assembly. By real-time monitoring of the sediment residue, the compensation rod can compensate for the extended length of the electric push rod, and work in conjunction with the electric push rod to provide an additional stroke for the pressing head, ensuring that when the amount of sediment gradually decreases, the pressing head can fully squeeze the sediment and squeeze out the water therein as much as possible, thereby improving the sediment treatment effect and dehydration rate. Moreover, as the pressing head reciprocates, the slag discharge blades perform continuous reciprocating closing actions. The slag discharge active shaft and the transmission gear cooperate closely in this process to drive the rotating bracket to rotate. The rotating bracket will drive the scraper plate to organize the sediment inside the reactor, and guide the more dispersed and messy sediment into the slag discharge port, which is beneficial to subsequent squeezing work, avoids sediment accumulation, and improves the squeezing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the scraping assembly of the present invention;

[0022] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0023] Figure 5 For the present invention Figure 3 A in the middle is an enlarged schematic diagram of the top-down section structure;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the electric push rod, compensation rod and pressing head of the present invention;

[0025] Figure 7It is a schematic structural diagram of the sealing component and the slag discharge component of the present invention;

[0026] Figure 8 It is a front view structural schematic diagram of the sealing component and the slag discharge component of the present invention.

[0027] In the figure: 1. Reactor; 11. Stirring rod; 12. Slag discharge port; 2. Electric push rod; 201. Compensating rod; 202. Pressure sensor; 3. Press head; 301. Filter screen; 302. One-way valve; 4. Sealing drive ring; 401. Sealing driven gear; 402. Sealing blade; 403. Sealing driving shaft; 404. Sealing driving gear; 405. First rack; 406. Second rack; 5. Slag discharge rotating ring; 501. Slag discharge driven gear; 502. Slag discharge blade; 503. Slag discharge driving shaft; 504. Slag discharge driving gear; 505. Third rack; 506. Fourth rack; 6. Transmission gear; 601. Rotating piece; 602. Ratchet; 7. Rotating bracket; 701. Scraper plate. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figures 1-8The present invention provides a technical solution: a mixed reactor for treating hot-dip galvanized waste acid, comprising a reactor 1, a stirring rod 11 and a slag discharge port 12, an electric push rod 2 installed at the bottom end of the stirring rod 11, a compensation rod 201 connected to the extended end of the electric push rod 2, a pressure sensor 202 for controlling the compensation rod 201 installed at the bottom of the inner wall of the reactor 1, a pressing head 3 fixed at the bottom end of the compensation rod 201, a filter screen 301 provided at the end of the internal cavity of the pressing head 3, a one-way valve 302 installed in the cavity, a sealing blade 402 installed in the upper area of ​​the inner wall of the slag discharge port 12 through a sealing component, a slag discharge component installed in the lower area of ​​the inner wall of the slag discharge port 12 through a slag discharge component, and a scraper installed on the inner wall of the reactor 1 Slag assembly, the electric push rod 2 is installed at the bottom end of the stirring rod 11, so that the pressing head 3 can flexibly adjust its position. The pressure sensor 202 is installed at the bottom of the inner wall of the reactor 1, which can monitor the sediment residue in real time and adjust the extension length of the compensation rod 201. It works together with the electric push rod 2 to provide additional stroke for the pressing head 3, ensuring that under different sediment amounts, the pressing head 3 can fully squeeze the sediment and squeeze out as much water as possible, thereby improving the sediment treatment effect and dehydration rate. The filter 301 can intercept impurities in the sediment and prevent them from entering the inner wall of the reactor 1. The one-way valve 302 ensures that the squeezed water can only flow back into the reactor 1 in one direction, without affecting the squeezing quality of the squeezed sediment;

[0030] The sealing assembly includes a sealing driven gear 401 installed on the outer wall of the sealing blade 402, and a sealing drive ring 4 rotatably installed on the inner wall of the slag discharge port 12. The inner wall of the sealing drive ring 4 is provided with teeth that mesh with the sealing driven gear 401. It also includes a sealing active shaft 403 rotatably installed on the inner wall of the slag discharge port 12, and a sealing active gear 404 is installed at the bottom end of the sealing active shaft 403 to mesh with the teeth on the outer wall of the sealing drive ring 4. A first rack 405 and a second rack 406 are installed on both sides of the sealing active shaft 403 in opposite engagement. The gear transmission enables the sealing blade 402 to fit tightly to form a reliable sealing state, prevent the liquid and sediment in the reactor 1 from leaking, maintain the pressure in the reactor 1 stable, and ensure the normal progress of the reaction. At the same time, during the movement, the pressing head 3 can easily realize the opening and closing of the sealing blade 402 by cooperating with the first rack 405 and the second rack 406 to meet the needs of different working stages.

[0031] As an embodiment of the present invention, a sealing rubber pad is installed on the side wall of the pressing head 3, and the diameter of the pressing head 3 is equal to the diameter of the slag discharge port 12. The sealing rubber pad has good elasticity and flexibility. When the pressing head 3 enters the slag discharge port 12, the rubber pad can fit tightly against the inner wall of the slag discharge port 12 to form a sealed environment, which effectively prevents the sediment and moisture from leaking out from the gap between the pressing head 3 and the slag discharge port 12 during the pressing process, thereby affecting the pressing effect, so that the sediment can be squeezed more fully, thereby improving the dehydration efficiency.

[0032] As an embodiment of the present invention, the slag discharge component includes a slag discharge driven gear 501 installed on the outer wall of the slag discharge blade 502, and a slag discharge rotating ring 5 rotatably installed on the inner wall of the slag discharge port 12, and the inner wall of the slag discharge rotating ring 5 is provided with teeth meshing with the slag discharge driven gear 501, and also includes a slag discharge active shaft 503 rotatably installed on the inner wall of the slag discharge port 12, and the bottom end of the slag discharge active shaft 503 is installed with a slag discharge active gear 504 meshing with the teeth on the outer wall of the slag discharge rotating ring 5, and the two sides of the slag discharge active shaft 503 are oppositely meshed with a third rack 505 and a fourth rack 506. The gear meshing transmission mode has the characteristic of high stability. By controlling the rotation of the slag discharge rotating ring 5, the opening and closing state of the slag discharge blade 502 can be accurately controlled, thereby avoiding the abnormal opening and closing of the slag discharge blade 502 due to unstable transmission, thereby improving the service life of the slag discharge component and the overall reliability of the equipment.

[0033] As an embodiment of the present invention, four sealing blades 402 and a slag discharge blade 502 are respectively installed on the inner wall of the slag discharge port 12, and the sealing blade 402 is located above the slag discharge blade 502, and the four sealing blades 402 and the slag discharge blade 502 are in a tightly closed state with each other after being rotated and closed, which can effectively prevent the sediment and liquid in the reactor 1 from leaking out of the slag discharge port 12. The good sealing design avoids leakage problems and material loss, which is conducive to the smooth progress of work. The four sealing blades 402 and the slag discharge blade 502 are tightly attached to each other, so that the force between the blades is more uniform, thereby extending the service life of the blades.

[0034] As an embodiment of the present invention, the first rack 405, the third rack 505, the second rack 406 and the fourth rack 506 are arranged vertically in sequence, and the racks are all located above the sealing blade 402. The vertical arrangement allows each rack to be arranged in a clear and orderly structure, making power transmission more direct, and can efficiently realize the switching of slag discharge and sealing functions, thereby improving the reliability and service life of the equipment.

[0035] As an embodiment of the present invention, the spacing between the first rack 405 and the second rack 406, and the spacing between the third rack 505 and the fourth rack 506 is greater than the thickness of the pressing head 3, providing sufficient movement space for the pressing head 3 so that it can move back and forth smoothly without being restricted by the rack, thereby ensuring the continuity of the entire slag discharge and pressing process.

[0036] As an embodiment of the present invention, the first rack 405 and the second rack 406, and the third rack 505 and the fourth rack 506 are respectively designed to be inclined in opposite directions near the ends of the sealing blade 402. The inclined design makes the contact process with the pressing head 3 smoother, avoids sudden rigid collisions, provides stable power for the structure, and reduces the risk of component damage.

[0037] As an embodiment of the present invention, the scraping assembly includes a transmission gear 6 rotatably mounted on the top of the slag discharge driving shaft 503, a rotating piece 601 is rotatably mounted on the inner wall of the bottom cavity of the transmission gear 6, and a ratchet 602 corresponding to the rotating piece 601 is mounted on the outer wall of the top of the slag discharge driving shaft 503. It also includes a rotating bracket 7 rotatably mounted on the inner wall of the bottom of the reactor 1, and a scraper plate 701 is fixed on the outer wall of the rotating bracket 7. The cooperation between the rotating piece 601 and the ratchet 602 enables the rotation of the slag discharge driving shaft 503 to be transmitted to the transmission gear 6 in a specific manner. When the slag discharge driving shaft 503 rotates in one direction, the rotating piece 601 cooperates with the ratchet 602 to drive the transmission gear 6 to rotate; and when the slag discharge driving shaft 503 rotates in the opposite direction, the rotating piece 601 is separated from the ratchet 602, and the transmission gear 6 does not move with it, so that the scraper plate 701 can rotate to effectively organize the sediment inside the reactor 1 instead of swinging in place, thereby improving the flexibility and efficiency of the work.

[0038] As an embodiment of the present invention, the outer wall of the rotating bracket 7 is provided with teeth that mesh with the transmission gear 6, and multiple groups of scraper plates 701 are fixed to the outer wall of the rotating bracket 7, and the outer wall of the scraper plates 701 is in close contact with the inner wall of the bottom of the reactor 1, which is conducive to the rotating bracket 7 to rotate smoothly following the transmission gear 6. The multiple groups of scraper plates 701 move in coordination, which improves the comprehensiveness and efficiency of scraping, and avoids the problem of incomplete cleaning caused by the limited coverage of a single scraper plate 701.

[0039] Working principle: When the waste acid treatment of hot-dip galvanizing is completed with the mixed reactor waste liquid treatment, the waste acid inside the reactor is neutralized and left to stand for a period of time. After the stratification of the precipitate and the supernatant is completed, the electric push rod 2 can be started to drive the pressing head 3 to move toward the slag discharge port 12. When the pressing head 3 moves to the slag discharge port 12, since the diameter of the pressing head 3 is the same as that of the slag discharge port 12, and the side wall of the pressing head 3 is installed with a sealing rubber pad, the sealing rubber pad has good elasticity and sealing, which can effectively prevent the precipitate and moisture from leaking out during the squeezing process. Therefore, the precipitate on the inner wall of the slag discharge port 12 will be in a closed space. As the pressing head 3 moves, the pressing head 3 will first First, the third rack 505 is contacted and squeezed. Due to the inclined design of the end of the third rack 505, the third rack 505 will be squeezed and pushed and move backward. The third rack 505 is meshed with the slag discharge driving shaft 503. When the third rack 505 moves backward, the slag discharge driving shaft 503 is driven to rotate. The rotation of the slag discharge driving shaft 503 will synchronously drive the fourth rack 506 to move forward, preparing for the subsequent reset work. When the slag discharge driving shaft 503 rotates, it drives the slag discharge driving gear 504 fixed at its bottom end to rotate. Through the meshing of the slag discharge driving gear 504 and the slag discharge rotating ring 5, the slag discharge rotating ring 5 is driven to rotate. The inner wall teeth mesh with the slag discharge driven gear 501 installed on the outer wall of the slag discharge blade 502, so the slag discharge blade 502 will be driven to rotate, and finally fit together to form a tightly closed state, effectively preventing the sediment from leaking out of the slag discharge port 12 during the squeezing process, ensuring the smooth progress of the squeezing work. As the squeezing head 3 continues to descend, the squeezing head 3 squeezes the first rack 405. Similarly, the first rack 405 will move backward to drive the sealing active shaft 403 to rotate, and drive the second rack 406 to move forward. At the same time, it drives the sealing drive ring 4 to rotate, driving the sealing blade 402 to open, releasing its original closed state, so that the sediment can The water in the sediment can fall onto the slag discharge blade 502, and the pressing head 3 continues to press down to squeeze the sediment. In this process, the filter screen 301 and the one-way valve 302 work together. The filter screen 301 can filter the sediment and prevent larger particles from passing through, thereby ensuring the relative purity of the water entering the inner wall of the reactor 1, while the one-way valve 302 plays a role in controlling the direction of water flow. It only allows the water in the sediment to flow toward the inner wall of the reactor 1 when being squeezed, and will not allow the water that has entered the inner wall of the reactor 1 to flow back out. The water in the sediment will be squeezed back into the inner wall of the reactor 1 without affecting the sediment that has been squeezed, thereby ensuring the squeezing effect of the sediment.

[0040] When the squeezing work is completed, the electric push rod 2 drives the squeezing head 3 to rise and reverse reset. The squeezing head 3 will first contact and squeeze the second rack 406, so that it drives the sealing active shaft 403 to rotate in the opposite direction, so that the sealing blades 402 are reclosed to form a sealed state, preventing unprocessed materials from mixing into the sediment that has been squeezed in the subsequent slag discharge process, thereby ensuring the purity of the slag discharge. The squeezing head 3 continues to rise, contact and squeeze the fourth rack 506, drive the slag discharge active shaft 503 to rotate in the opposite direction, so that the slag discharge blades 502 are opened. At this time, the sediment that has completed the squeezing work passes through the opened slag discharge blades. The sheet 502 is discharged from the reactor 1. At the same time, the slag discharge driving shaft 503 rotates in the opposite direction. Through the cooperation of the ratchet 602 installed on its top and the rotating sheet 601, the transmission gear 6 is driven to rotate synchronously. Since the transmission gear 6 and the rotating bracket 7 are meshed with each other, the rotating bracket 7 will rotate, driving the multiple groups of scrapers 701 installed on its outer wall to rotate, arranging the sediment inside the reactor 1, and guiding the relatively dispersed and disorderly sediment into the slag discharge port 12, avoiding sediment accumulation, creating good conditions for subsequent squeezing work, and making the subsequent squeezing work more efficient.

[0041] When the sediment inside the reactor 1 gradually decreases, the pressure sensor 202 installed at the bottom of the inner wall of the reactor 1 senses the remaining sediment in the reactor 1 and adjusts the moving distance of the compensation rod 201. The compensation rod 201 can provide additional assistance to the electric push rod 2, increase the stroke of the electric push rod 2, and enable the electric push rod 2 to drive the pressing head 3 to perform a more sufficient pressing action, ensuring that the sediment in the reactor 1 can be squeezed as cleanly as possible, thereby improving the efficiency and quality of waste acid treatment, reducing the links and time of manual operations, improving treatment efficiency, and reducing production costs.

[0042] Any content not described in detail in this specification is prior art known to those skilled in the art. In the description of the present invention, unless otherwise specified, "plurality" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings and are intended solely for ease of description and simplification. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation and are therefore not to be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise specified or limited, the terms "connected" and "connected" are to be understood broadly, meaning, for example, fixedly connected, detachably connected, or integrally connected; mechanically connected, electrically connected; directly connected, or indirectly connected through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention on a case-by-case basis.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mixing reactor for treating hot-dip galvanizing waste acid, comprising a reactor (1), a stirring rod (11) and a slag discharge port (12), characterized in that: An electric push rod (2) is installed at the bottom end of the stirring rod (11), and a compensating rod (201) is connected to the extended end of the electric push rod (2). A pressure sensor (202) for controlling the compensating rod (201) is installed at the bottom of the inner wall of the reactor (1). A pressing head (3) is fixed to the bottom end of the compensating rod (201), and a filter screen (301) is provided at the end of the internal cavity of the pressing head (3). A one-way valve (302) is installed in the cavity. A sealing blade (402) is installed in the upper area of ​​the inner wall of the slag discharge port (12) through a sealing component. A slag discharge component is installed in the lower area of ​​the inner wall of the slag discharge port (12), and a slag scraping component is installed on the inner wall of the reactor (1); The sealing assembly comprises a sealing driven gear (401) mounted on the outer wall of the sealing blade (402), and a sealing drive ring (4) rotatably mounted on the inner wall of the slag discharge port (12), wherein the inner wall of the sealing drive ring (4) is provided with teeth meshing with the sealing driven gear (401), and further comprises a sealing driving shaft (403) rotatably mounted on the inner wall of the slag discharge port (12), wherein the bottom end of the sealing driving shaft (403) is provided with a sealing driving gear (404) meshing with the teeth of the outer wall of the sealing drive ring (4), and a first rack (405) and a second rack (406) are mounted on opposite sides of the sealing driving shaft (403); Four sealing blades (402) and four slag discharge blades (502) are respectively installed on the inner wall of the slag discharge port (12), and the sealing blades (402) are located above the slag discharge blades (502). After the four sealing blades (402) and the four slag discharge blades (502) are rotated and closed, they are in a tightly closed state with each other. The slag discharge assembly comprises a slag discharge driven gear (501) mounted on the outer wall of the slag discharge blade (502), and a slag discharge rotating ring (5) rotatably mounted on the inner wall of the slag discharge port (12), wherein the inner wall of the slag discharge rotating ring (5) is provided with teeth meshing with the slag discharge driven gear (501), and further comprises a slag discharge driving shaft (503) rotatably mounted on the inner wall of the slag discharge port (12), wherein the bottom end of the slag discharge driving shaft (503) is provided with a slag discharge driving gear (504) meshing with the teeth of the outer wall of the slag discharge rotating ring (5), and a third rack (505) and a fourth rack (506) are mounted on opposite sides of the slag discharge driving shaft (503); During the movement, the pressing head cooperates with the third rack and the first rack to open the sealing blades and close the slag discharge blades. During the retraction and reset of the pressing head, it cooperates with the fourth rack and the second rack to open the slag discharge blades and close the sealing blades.

2. A mixed reactor for treating hot-dip galvanizing waste acid according to claim 1, characterized in that: A sealing rubber pad is installed on the side wall of the pressing head (3), and the diameter of the pressing head (3) is equal to the diameter of the slag discharge port (12).

3. A mixed reactor for treating hot-dip galvanizing waste acid according to claim 1, characterized in that: The first rack (405), the third rack (505), the second rack (406) and the fourth rack (506) are arranged vertically in sequence, and the racks are all located above the sealing blade (402).

4. A mixed reactor for treating hot-dip galvanizing waste acid according to claim 1, characterized in that: The spacing between the first rack (405) and the second rack (406), and between the third rack (505) and the fourth rack (506) is greater than the thickness of the pressing head (3).

5. A mixed reactor for treating hot-dip galvanizing waste acid according to claim 4, characterized in that: The ends of the first rack (405) and the second rack (406), and the third rack (505) and the fourth rack (506) close to the sealing blade (402) are designed to be inclined in opposite directions.

6. The mixed reactor for treating hot-dip galvanizing waste acid according to claim 1, characterized in that: The scraping assembly comprises a transmission gear (6) rotatably mounted on the top of the slag discharge driving shaft (503), a rotating piece (601) rotatably mounted on the inner wall of the bottom cavity of the transmission gear (6), a ratchet (602) corresponding to the rotating piece (601) mounted on the outer wall of the top of the slag discharge driving shaft (503), and a rotating bracket (7) rotatably mounted on the inner wall of the bottom of the reactor (1), and a scraping plate (701) is fixed to the outer wall of the rotating bracket (7); The outer wall of the rotating bracket (7) is provided with teeth that mesh with the transmission gear (6), and multiple groups of scraper plates (701) are fixed to the outer wall of the rotating bracket (7), and the outer wall of the scraper plates (701) is in close contact with the inner wall of the bottom of the reactor (1).

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