A corrosion protection device for a nitrate evaporation tank

Abstract

The utility model discloses a kind of anti-corrosion protection devices for nitrate evaporation tank, it is related to anticorrosive protection technical field, including tank body, the tank body bottom is equipped with discharge gate, the tank body upper end is equipped with feed inlet, pivot is installed in the middle position of tank body, fixed mounting is equipped with material turning plate on the pivot, connecting mechanism is installed in the middle position of tank body top, anticorrosion mechanism is connected at the tank body edge, the anticorrosion mechanism includes the cover body on screw thread installation in tank body, fixed mounting is equipped with sliding frame in the cover body bottom, fixed mounting is equipped with zinc stick in the sliding frame inboard, wire is connected on the zinc stick, annular frame is slidably installed on the sliding frame, fixed mounting is equipped with driving shaft on the annular frame, and driving shaft penetrates cover body;The anti-corrosion protection device for nitrate evaporation tank, by the cooperation of anticorrosion mechanism and connecting mechanism, the oxidation corrosion reaction of material turning plate can be inhibited, and anticorrosive protection is realized.

Description

Technical Field

[0001] This utility model relates to the field of corrosion protection technology, specifically a corrosion protection device for nitrate evaporation tanks. Background Technology

[0002] Evaporators are an indispensable piece of equipment in many industrial fields such as chemical production, food processing, and pharmaceutical manufacturing. Their core working principle is to continuously heat the tank body through an external heat source, causing the liquid material inside the tank to gradually vaporize under heat, thereby achieving the evaporation and concentration process of the material.

[0003] The prior art, disclosed in CN217526383U, discloses an evaporator for preparing refined industrial salt, including a tank body, a material leveling mechanism provided on the inner side of the tank body, an exhaust pipe connected to one side of the tank body, and a recovery cylinder connected to the upper outer side of one end of the exhaust pipe, with one side of the recovery cylinder connected to the tank body by a fixing member.

[0004] During the evaporation process in an evaporator, the rotating shaft continuously drives the tipping plate to rotate. Because the tipping plate needs to remain rotated for extended periods, its surface experiences continuous friction with the material inside the tank. This continuous mechanical friction causes the pre-coated anti-corrosion protective coating on the tipping plate surface to gradually wear off. Once the anti-corrosion coating is damaged, the metal substrate is directly exposed to the high-concentration electrolyte environment inside the evaporator. In this situation, the metal surface of the tipping plate, now without anti-corrosion protection, undergoes an electrochemical reaction with the electrolyte, leading to severe corrosion. This corrosion not only shortens the service life of the tipping plate but may also affect the overall operating efficiency of the evaporator. Therefore, a corrosion protection device for nitrate evaporators is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a corrosion protection device for nitrate evaporation tanks to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion protection device for a nitrate evaporation tank, comprising a tank body, a discharge port at the bottom of the tank body, a feed port at the top of the tank body, a rotating shaft rotatably mounted in the middle of the tank body, a tilting plate fixedly mounted on the rotating shaft, a connecting mechanism mounted in the middle of the top of the tank body, and a corrosion protection mechanism connected to the edge of the tank body. The corrosion protection mechanism includes a cover threaded onto the tank body, a sliding frame fixedly mounted at the bottom of the cover, a zinc rod fixedly mounted inside the sliding frame, and a wire connected to the zinc rod.

[0007] Preferably, a ring frame is slidably mounted on the sliding frame, a drive shaft is fixedly mounted on the ring frame and penetrates the cover, a handle is fixedly mounted on the upper end of the drive shaft, and a cleaning brush is fixedly mounted on the inner side of the ring frame.

[0008] Preferably, the cover has a through hole, through which the drive shaft passes.

[0009] Preferably, the tank body has a threaded opening, the cover is connected to the tank body through the threaded opening, the annular frame is slidably mounted on the outside of the zinc rod through a sliding frame, and the cleaning brush is slidably mounted on the outside of the zinc rod through the annular frame.

[0010] Preferably, the connecting mechanism includes a positioning seat fixedly installed at the middle position of the upper end of the tank body, the positioning seat has sliding grooves on both sides, a sealing cover is threaded at the end of the sliding groove, a terminal block is fixedly installed on the sealing cover, a carbon brush is slidably installed in the sliding groove, a spring is provided in the sliding groove, and a soft copper wire connects the carbon brush and the terminal block.

[0011] Preferably, the end of the groove is threaded, and the sealing cap is threadedly connected to the end of the groove.

[0012] Preferably, one end of the conductor is connected to a zinc rod, and the other end of the conductor is connected to a soft copper wire via a terminal block.

[0013] Preferably, one end of the spring is connected to the sealing cover, the other end of the spring is connected to the carbon brush, and the end of the carbon brush abuts against the surface of the rotating shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this application, the connection between the wire and the soft copper wire can be realized by using the terminal block. At the same time, the spring will apply a pushing force to the carbon brush, causing the carbon brush to abut against the rotating shaft where the flipping plate is located, thereby establishing a stable connection between the flipping plate and the zinc rod.

[0015] 2. In this application, after the tilting plate and the zinc rod are firmly connected, the zinc rod, acting as a sacrificial anode, is immersed in the electrolyte inside the tank, and the protected tilting plate is also immersed in the electrolyte inside the tank. Due to the potential difference, the anode metal preferentially loses electrons, undergoes an oxidation reaction, and gradually dissolves and is consumed. At the same time, electrons flow through the wires to the protected tilting plate, causing electron accumulation on the surface of the tilting plate, reducing the potential to the cathodic protection range, thereby effectively inhibiting the oxidation and corrosion reaction of the tilting plate and achieving the purpose of corrosion protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the connection mechanism of this utility model; Figure 4 This is a schematic diagram of the anti-corrosion mechanism of this utility model; Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0017] The markings in the diagram are: 1. Tank body; 2. Discharge port; 3. Inlet port; 4. Rotating shaft; 5. Anti-corrosion mechanism; 501. Cover; 502. Wire; 503. Handle; 504. Drive shaft; 505. Zinc rod; 506. Sliding frame; 507. Ring frame; 508. Cleaning brush; 6. Connecting mechanism; 601. Positioning seat; 602. Slide groove; 603. Terminal block; 604. Sealing cover; 605. Spring; 606. Carbon brush; 607. Soft copper wire; 7. Tilting plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution for an anti-corrosion protection device for a nitrate evaporation tank, including a tank body 1, a discharge port 2 at the bottom of the tank body 1, a feed port 3 at the top of the tank body 1, a rotating shaft 4 rotatably installed in the middle of the tank body 1, a tilting plate 7 fixedly installed on the rotating shaft 4, a connecting mechanism 6 installed in the middle of the top of the tank body 1, an anti-corrosion mechanism 5 connected to the edge of the tank body 1, and a wire 502 connected to a zinc rod 505.

[0020] Material can be fed into tank 1 through inlet 3. After the material is fed into tank 1, the rotating shaft 4 drives the tilting plate 7 to rotate, thereby agitating the material inside tank 1. The crystallized nitrate can be discharged through outlet 2. The anti-corrosion mechanism 5 and the connecting mechanism 6 work together to suppress the oxidation and corrosion reaction of the tilting plate 7, thus achieving anti-corrosion protection.

[0021] Example 2: Figure 2 , Figure 4 and Figure 5As shown, the anti-corrosion mechanism 5 includes a cover 501 threaded onto the tank body 1. A sliding frame 506 is fixedly installed at the bottom of the cover 501. A zinc rod 505 is fixedly installed inside the sliding frame 506. An annular frame 507 is slidably installed on the sliding frame 506. A drive shaft 504 is fixedly installed on the annular frame 507 and passes through the cover 501. A handle 503 is fixedly installed at the upper end of the drive shaft 504. A cleaning brush 508 is fixedly installed inside the annular frame 507. A through hole is provided on the cover 501, and the drive shaft 504 passes through the cover 501 through the through hole.

[0022] Specifically, after a stable connection is established between the flip plate 7 and the zinc rod 505, the zinc rod 505, acting as a sacrificial anode material, is completely immersed in the electrolyte solution contained in the tank 1. Simultaneously, the flip plate 7, which needs to be protected, is also completely immersed in the same electrolyte environment. Due to the significant potential difference between the zinc metal and the flip plate 7, a galvanic cell effect is formed in the electrolyte medium. The zinc metal, acting as the anode, preferentially loses electrons due to its more negative electrode potential, undergoing an oxidation reaction. Zinc atoms gradually transform into zinc ions and enter the solution, a process that causes the zinc rod 505 to gradually dissolve and be consumed. At the same time, the released electrons continuously flow to the flip plate 7, which acts as the cathode, through the highly conductive wire 502, forming an electron-rich region on the surface of the flip plate 7, significantly reducing its electrode potential to the potential range required for cathodic protection. This electrochemical protection mechanism effectively inhibits the oxidation reaction of metal atoms on the surface of the flip plate 7, blocking the corrosion reaction path between it and oxidizing substances in the electrolyte, thereby achieving a long-term and reliable anti-corrosion protection effect for the flip plate 7. After removing the anti-corrosion mechanism 5, the cleaning brush 508 inside the ring frame 507 can be driven up and down by the drive shaft 504 to clean the surface of the zinc rod 505 and ensure its reactivity.

[0023] Example 3: Figure 2 and Figure 4 As shown, the connecting mechanism 6 includes a positioning seat 601 fixedly installed at the middle position of the upper end of the tank body 1. The positioning seat 601 has sliding grooves 602 on both sides. A sealing cover 604 is threadedly installed at the end of the sliding groove 602. A terminal block 603 is fixedly installed on the sealing cover 604. A carbon brush 606 is slidably installed in the sliding groove 602. A spring 605 is provided in the sliding groove 602. A soft copper wire 607 is connected between the carbon brush 606 and the terminal block 603. A thread is provided at the end of the sliding groove 602. The sealing cover 604 is threadedly connected to the end of the sliding groove 602. One end of the wire 502 is connected to the zinc rod 505. The other end of the wire 502 is connected to the soft copper wire 607 through the terminal block 603.

[0024] Specifically, through the conductive connection function of the terminal block 603, a reliable electrical connection can be achieved between the external wire 502 and the internal soft copper wire 607. During this process, the spring 605 continuously applies a constant elastic force to the carbon brush 606, ensuring that the carbon brush 606 remains firmly in contact with the conductive surface of the rotating shaft 4 connected to the flip plate 7. This ensures a stable and low-resistance electrical connection path is formed between the flip plate 7 and the zinc rod 505. Simultaneously, the elastic properties of the spring 605 automatically compensate for wear on the carbon brush 606 during use, maintaining a long-term stable contact pressure.

[0025] Working Principle: Material is fed into tank 1 through inlet 3. After entering tank 1, the material is rotated by rotating shaft 4, causing the tilting plate 7 to rotate and thus agitate the material inside tank 1. Terminal block 603 connects wire 502 to soft copper wire 607. Simultaneously, spring 605 applies a pushing force to carbon brush 606, causing it to contact the rotating shaft 4 where the tilting plate 7 is located, thus establishing a stable connection between the tilting plate 7 and zinc rod 505. After a stable connection is established between the tilting plate 7 and zinc rod 505, the zinc rod 505, acting as a sacrificial anode, is immersed in the electrolyte within tank 1. The protected tilting plate 7 is also simultaneously immersed in the electrolyte within tank 1. Due to the potential difference, the anode metal preferentially loses electrons and undergoes an oxidation reaction, gradually dissolving and being consumed. Simultaneously, electrons flow through wire 502 to the protected tilting plate 7, enriching its surface with electrons and lowering its potential to the cathodic protection range, thereby effectively inhibiting the oxidation and corrosion reaction of the tilting plate 7 and achieving corrosion protection.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A corrosion protection device for a nitrate evaporator, comprising a tank body (1), wherein a discharge port (2) is provided at the bottom of the tank body (1), a feed port (3) is provided at the upper end of the tank body (1), a rotating shaft (4) is rotatably installed at the middle position of the tank body (1), and a tilting plate (7) is fixedly installed on the rotating shaft (4), characterized in that: A connecting mechanism (6) is installed at the middle of the top of the tank (1), and an anti-corrosion mechanism (5) is connected at the edge of the tank (1). The anti-corrosion mechanism (5) includes a cover (501) threaded onto the tank (1). A sliding frame (506) is fixedly installed at the bottom of the cover (501). A zinc rod (505) is fixedly installed on the inner side of the sliding frame (506), and a wire (502) is connected to the zinc rod (505).

2. The corrosion protection device for a nitrate evaporator according to claim 1, characterized in that: A ring frame (507) is slidably mounted on the sliding frame (506). A drive shaft (504) is fixedly mounted on the ring frame (507) and the drive shaft (504) passes through the cover (501). A handle (503) is fixedly mounted on the upper end of the drive shaft (504). A cleaning brush (508) is fixedly mounted on the inner side of the ring frame (507).

3. The corrosion protection device for a nitrate evaporator according to claim 2, characterized in that: The cover (501) has a through hole, and the drive shaft (504) passes through the cover (501) through the through hole.

4. The corrosion protection device for a nitrate evaporator according to claim 3, characterized in that: The tank body (1) is provided with a threaded opening. The cover (501) is connected to the tank body (1) through the threaded opening. The ring frame (507) is slidably installed on the outside of the zinc rod (505) through the sliding frame (506). The cleaning brush (508) is slidably installed on the outside of the zinc rod (505) through the ring frame (507).

5. The corrosion protection device for a nitrate evaporator according to claim 4, characterized in that: The connecting mechanism (6) includes a positioning seat (601) fixedly installed at the middle position of the upper end of the tank (1). The positioning seat (601) has a sliding groove (602) on both sides. A sealing cover (604) is threaded at the end of the sliding groove (602). A terminal block (603) is fixedly installed on the sealing cover (604). A carbon brush (606) is slidably installed in the sliding groove (602). A spring (605) is provided in the sliding groove (602). A soft copper wire (607) is connected between the carbon brush (606) and the terminal block (603).

6. The corrosion protection device for a nitrate evaporator according to claim 5, characterized in that: The slide (602) is threaded at the end, and the sealing cap (604) is threaded to the end of the slide (602).

7. The corrosion protection device for a nitrate evaporator according to claim 6, characterized in that: One end of the conductor (502) is connected to the zinc rod (505), and the other end of the conductor (502) is connected to the soft copper wire (607) through the terminal block (603).

8. The corrosion protection device for a nitrate evaporator according to claim 7, characterized in that: One end of the spring (605) is connected to the sealing cover (604), and the other end of the spring (605) is connected to the carbon brush (606), with the end of the carbon brush (606) abutting against the surface of the rotating shaft (4).

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