Passivation tank heating device

Abstract

This utility model discloses a passivation liquid tank heating device, which includes an oil inlet tank, a main tank, and an oil outlet tank. The oil inlet tank, the main tank, and the oil outlet tank are arranged sequentially from left to right. The main tank has a main tank cavity, and several tank installation holes are opened parallel to each other on the inner sidewalls of both sides of the main tank cavity. U-shaped tubes are fixedly connected to each tank installation hole. There is still a certain space between the U-shaped tubes and the bottom of the main tank cavity. The extensions of the U-shaped tubes are fixedly connected to the oil inlet tank and the oil outlet tank. The oil is centrally distributed through the oil inlet tank and evenly penetrates the passivation liquid area through the U-shaped tubes in the main tank. The design of the U-shaped tubes being suspended at the bottom of the main tank cavity effectively avoids local overheating and blockage caused by sediment accumulation. The cooled oil is efficiently collected and discharged by the oil outlet tank. The method of physically isolating the corrosive medium from the heat source solves the problems of safety and corrosion.

Description

Technical Field

[0001] This utility model relates to the field of heating technology, and in particular to a passivation liquid tank heating device. Background Technology

[0002] In the field of metal surface treatment, passivation is a key process that improves the corrosion resistance of metal by forming a dense passivation film on the metal surface. The temperature of the passivation solution is the core parameter that affects the quality of the passivation film. If the temperature is too low, the reaction rate will be slow, the passivation film thickness will be insufficient and the uniformity will be poor. If the temperature is too high, it may cause the decomposition of the passivation solution components, aggravate the loss of effective components, and even produce harmful by-products. Therefore, the temperature of the passivation solution needs to be precisely controlled by a heating device.

[0003] A search revealed Chinese Patent Publication No. CN221645060U, which discloses a passivation liquid heating device, relating to the field of heating technology. The device includes a base plate, a vertical plate fixed to the outer wall of the top of the base plate, a groove on one side of the outer wall of the vertical plate, a lifting assembly installed on the inner wall of the groove, and a fixed plate installed on one side of the outer wall of the lifting assembly. This invention uses two electric heating tubes to heat the passivation liquid in a tank. During heating, a motor drives a rotating rod and a stirring rod to stir the passivation liquid, ensuring uniform heating. A water temperature sensor monitors the passivation liquid temperature in real time and transmits the data to a controller. When the passivation liquid reaches the desired temperature, the controller automatically stops the heating tubes to prevent overheating and sintering. Simultaneously, the controller activates an alarm to signal the completion of heating. This makes the heating of the passivation liquid safer and more intelligent. However, problems remain, such as the heating tubes being directly immersed in the passivation liquid, leading to excessively high temperatures in the area near the heating tubes, causing decomposition of the passivation liquid components and accelerated aging of the tank solution. Utility Model Content

[0004] The purpose of this invention is to provide a heating device for a passivation liquid tank, which solves the problem in the prior art where the heating tube is directly immersed in the passivation liquid, resulting in excessively high temperatures in the area near the heating tube, leading to decomposition of the passivation liquid components and accelerated aging of the tank solution.

[0005] To achieve the above objectives, a passivation liquid tank heating device is provided, comprising an oil inlet tank, a main tank, and an oil outlet tank, wherein the oil inlet tank, the main tank, and the oil outlet tank are arranged sequentially from left to right, and a main tank cavity is provided in the main tank, wherein a plurality of tank mounting holes are provided parallel on the inner sidewalls of both sides of the main tank cavity.

[0006] Each of the mounting holes in the tank is fixedly connected to a U-shaped tube, and the extension section of the U-shaped tube is fixedly connected to the oil inlet tank and the oil outlet tank.

[0007] According to the passivation liquid tank heating device, a horizontal plate is fixedly connected to the main tank body, a rotating rod is rotatably connected to the lower end of the middle part of the horizontal plate, and a plurality of stirring rods are fixedly connected to the rotating rod in the vertical direction.

[0008] According to the passivation liquid tank heating device, a protective shell is fixedly connected to the horizontal plate, and a motor is fixedly connected inside the protective shell. The output shaft of the motor is connected to a rotating rod through a coupling.

[0009] According to the passivation liquid tank heating device, the oil inlet tank body is provided with an oil inlet cavity, the bottom of the front wall of the oil inlet cavity is fixedly connected to a pipe, the main tank body is provided with a heating tank, and the outlet end of the heating tank is fixedly connected to the oil inlet cavity by a pipe.

[0010] According to the passivation liquid tank heating device, the oil outlet tank body is provided with an oil outlet cavity, the bottom of the front wall of the oil outlet cavity is fixedly connected to a pipe, the main tank body is provided with a circulation pump, and the inlet end of the circulation pump is fixedly connected to the oil outlet cavity by a pipe.

[0011] According to the passivation liquid tank heating device, the top of the heating tank is provided with an oil filling port, the bottom of the heating tank is fixedly connected with a heating tank support, and the inlet end of the heating tank is fixedly connected to the outlet end of the circulation pump through a pipe.

[0012] According to the passivation liquid tank heating device, a circulation pump motor is fixedly connected to the circulation pump.

[0013] According to the passivation liquid tank heating device, the main tank cavity is provided with a liquid level line.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. This patent uses a centralized distribution system in the oil inlet tank, with the passivation liquid area evenly distributed through a U-shaped pipe inside the main tank. The design of the pipe being suspended at the bottom of the main tank effectively avoids local overheating and blockage caused by sediment accumulation. The cooled oil is then efficiently collected and discharged from the outlet tank. This method of physically isolating the corrosive medium from the heat source solves the safety and corrosion problems.

[0016] 2. This patent uses a motor to drive a multi-stage stirring rod to forcibly agitate the passivation liquid, eliminating temperature stratification and preventing local overheating that could lead to component decomposition; the overall closed-loop circulation path, combined with real-time liquid level monitoring, reduces heat loss.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall design of a passivation liquid tank heating device according to the present invention.

[0020] Figure 2 This is a side sectional view of a passivation liquid tank heating device according to the present invention;

[0021] Figure 3 This is a schematic diagram of the stirring device of a passivation liquid tank heating device according to the present invention;

[0022] Figure 4 This is a side view of a passivation liquid tank heating device according to the present invention.

[0023] Legend:

[0024] 1. Liquid level line; 2. Horizontal plate; 3. Main tank body; 4. Oil inlet tank body; 5. Oil outlet tank body; 6. Oil filling port; 7. Heating tank; 8. Main tank cavity; 9. U-shaped pipe; 10. Oil inlet tank cavity; 11. Tank body mounting hole; 12. Oil outlet tank cavity; 13. Protective shell; 14. Rotating rod; 15. Motor; 16. Stirring rod; 17. Circulating pump motor; 18. Heating tank support; 19. Circulating pump; 20. Pipeline. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4 This utility model provides a passivation liquid tank heating device, which includes an oil inlet tank 4, a main tank 3, and an oil outlet tank 5. The oil inlet tank 4, the main tank 3, and the oil outlet tank 5 are arranged in sequence from left to right. The main tank 3 is provided with a main tank cavity 8, and a plurality of tank installation holes 11 are opened in parallel on the inner sidewalls of both sides of the main tank cavity 8.

[0027] U-shaped tubes 9 are fixedly connected to the mounting holes 11 of the tank body. The extension sections of the U-shaped tubes 9 are fixedly connected to the oil inlet tank body 4 and the oil outlet tank body 5. Hot oil enters from the oil inlet tank body 4 and flows into the U-shaped tubes 9. Since the U-shaped tubes 9 are distributed parallel to the two side walls of the main tank cavity 8, the contact area with the passivation liquid in the main tank cavity 8 can be increased. The passivation liquid is heated evenly through heat transfer. The heated hot oil then flows into the oil outlet tank body 5 through another extension section of the U-shaped tubes 9.

[0028] A horizontal plate 2 is fixedly connected to the main tank 3. A rotating rod 14 is rotatably connected to the lower middle part of the horizontal plate 2. Several stirring rods 16 are fixedly connected to the rotating rod 14 in the vertical direction. The rotation of the rotating rod 14 drives the stirring rods 16 to rotate. The stirring rods 16 stir the passivation liquid in the main tank cavity 8, so that the passivation liquid flows in the main tank cavity 8 and the passivation liquid at different positions can fully contact the U-shaped tube 9, so that the heating is more uniform.

[0029] A protective shell 13 is fixedly connected to the horizontal plate 2. A motor 15 is fixedly connected inside the protective shell 13. The output shaft of the motor 15 is connected to the rotating rod 14 through a coupling. When the motor 15 is started, its output shaft drives the rotating rod 14 to rotate through the coupling, thereby causing the stirring rod 16 to rotate to stir the passivation liquid. The protective shell 13 can prevent external dust, moisture and other substances from entering the motor 15 and ensure the normal operation of the motor 15.

[0030] The oil inlet tank 4 is provided with an oil inlet cavity 10. A pipe 20 is fixedly connected to the bottom of the front wall of the oil inlet cavity 10. A heating tank 7 is provided outside the main tank 3. The outlet end of the heating tank 7 is fixedly connected to the oil inlet cavity 10 by the pipe 20. The heating tank 7 heats the oil. The heated oil is transported to the oil inlet cavity 10 through the pipe 20. The oil inlet cavity 10 temporarily stores the hot oil and then distributes the hot oil to each U-shaped tube 9 to provide a heat source for the U-shaped tube 9 to heat the passivation liquid.

[0031] The oil outlet tank 5 is provided with an oil outlet cavity 12. A pipe 20 is fixedly connected to the bottom of the front wall of the oil outlet cavity 12. A circulation pump 19 is provided outside the main tank 3. The inlet end of the circulation pump 19 is fixedly connected to the oil outlet cavity 12 by the pipe 20. The hot oil after passing through the U-shaped pipe 9 to heat the passivation liquid flows into the oil outlet cavity 12, and the oil outlet cavity 12 collects the hot oil.

[0032] The heating tank 7 has an oil inlet 6 at its top and a heating tank support 18 fixedly connected to its bottom. The inlet of the heating tank 7 is fixedly connected to the outlet of the circulating pump 19 via a pipe 20. Oil is added to the heating tank 7 through the oil inlet 6. The heating tank support 18 provides support and fixation for the heating tank 7. The circulating pump 19 pressurizes the hot oil delivered from the oil outlet chamber 12 and delivers it to the inlet of the heating tank 7 via the pipe 20. The hot oil is reheated within the heating tank 7, achieving the recycling of hot oil and improving energy efficiency.

[0033] A circulation pump motor 17 is fixedly connected to the circulation pump 19, and the circulation pump motor 17 provides power to the circulation pump 19.

[0034] The main tank 8 is equipped with a liquid level line 1. Operators can judge whether the amount of passivating liquid is appropriate by observing whether the liquid level of the passivating liquid in the main tank 8 reaches the liquid level line 1, so as to add or reduce the passivating liquid in time and ensure the normal operation of the device.

[0035] Working principle: During use, the operator adds the cleaning heat transfer oil into the heating tank 7 through the oil inlet 6. The cleaning heat transfer oil is heated by the heating element inside the heating tank 7 and then injected into the oil inlet cavity 10 of the oil inlet tank 4 through the pipe 20, and evenly distributed to the left branch pipes of each U-shaped tube 9. When the oil flows through the section of the U-shaped tube 9 immersed in the passivation liquid in the main tank cavity 8, it indirectly heats the passivation liquid through the pipe wall. The cooled oil collects in the oil outlet cavity 12 of the oil outlet tank 5, and is pressurized by the circulation pump 19 and returned to the heating tank 7 for reheating, forming a closed loop circulation. Simultaneously, the motor 15 drives the rotating rod 14 to agitate the stirring rod 16, which in turn agitates the passivation liquid. This facilitates centralized distribution through the oil inlet tank 4, and the liquid is evenly distributed through the U-shaped pipe 9 in the main tank 3. The cooled oil is then efficiently collected and discharged from the oil outlet tank 5. At the same time, the motor 15 drives the multi-stage stirring rod 16 via the rotating rod 14 to forcibly agitate the passivation liquid, eliminating temperature stratification and preventing local overheating that could lead to component decomposition. The overall closed-loop circulation path, combined with real-time monitoring of the liquid level line 1, reduces heat loss.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A passivation liquid tank heating device, comprising: The oil inlet tank (4), the main tank (3) and the oil outlet tank (5) are characterized in that the oil inlet tank (4), the main tank (3) and the oil outlet tank (5) are arranged in order from left to right, the main tank (3) is provided with a main tank cavity (8), and a plurality of tank mounting holes (11) are opened in parallel on both sides of the inner sidewall of the main tank cavity (8). U-shaped tubes (9) are fixedly connected to the mounting holes (11) of the tank body, and the extension sections of the U-shaped tubes (9) are fixedly connected to the oil inlet tank body (4) and the oil outlet tank body (5).

2. The passivation liquid tank heating device according to claim 1, characterized in that, A horizontal plate (2) is fixedly connected to the main tank (3), and a rotating rod (14) is rotatably connected to the lower end of the middle part of the horizontal plate (2). Several stirring rods (16) are fixedly connected to the rotating rod (14) in the vertical direction.

3. The passivation liquid tank heating device according to claim 2, characterized in that, A protective shell (13) is fixedly connected to the horizontal plate (2), and a motor (15) is fixedly connected inside the protective shell (13). The output shaft of the motor (15) is connected to the rotating rod (14) through a coupling.

4. The passivation liquid tank heating device according to claim 1, characterized in that, The oil inlet tank (4) is provided with an oil inlet cavity (10). A pipe (20) is fixedly connected to the bottom of the front wall of the oil inlet cavity (10). A heating tank (7) is provided outside the main tank (3). The outlet end of the heating tank (7) is fixedly connected to the oil inlet cavity (10) by the pipe (20).

5. The passivation liquid tank heating device according to claim 1, characterized in that, The oil outlet tank (5) is provided with an oil outlet cavity (12). A pipe (20) is fixedly connected to the bottom of the front wall of the oil outlet cavity (12). A circulation pump (19) is provided outside the main tank (3). The inlet end of the circulation pump (19) is fixedly connected to the oil outlet cavity (12) by the pipe (20).

6. The passivation liquid tank heating device according to claim 4, characterized in that, The heating tank (7) has an oil inlet (6) at the top and a heating tank bracket (18) fixedly connected to the bottom of the heating tank (7). The inlet end of the heating tank (7) is fixedly connected to the outlet end of the circulating pump (19) through a pipe (20).

7. The passivation liquid tank heating device according to claim 5, characterized in that, The circulating pump (19) is fixedly connected to the circulating pump motor (17).

8. The passivation liquid tank heating device according to claim 1, characterized in that, The main tank (8) is provided with a liquid level line (1).

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