Medium-temperature phosphating solution production temperature control device

Abstract

The utility model discloses a medium-temperature phosphating solution production temperature control device, and relates to the technical field of metal processing. The water bath pool comprises a water bath pool body, electric heating bars are installed on the two sides of the bottom of the water bath pool body, the heating ends of the electric heating bars extend into the water bath pool body, a control panel is installed on the front face of the water bath pool body, a temperature sensor is installed at one bottom corner of the front face of the water bath pool body, and the detection end of the temperature sensor extends into the water bath pool body. The input end of the temperature sensor and the input end of the electrical bar are electrically connected with the output end of the control panel. The reaction tank is fixedly embedded in the middle of the top of the water bath tank. The reaction tank is embedded in the middle of the top of the water bath tank, water bath indirect heating is adopted, local high temperature caused by direct heating is avoided, it is ensured that a phosphating film is formed more uniformly, meanwhile, a thermal element does not make direct contact with corrosive liquid, corrosion is reduced, the service life of equipment is prolonged, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing equipment, and particularly relates to a temperature control device for the production temperature of medium-temperature phosphating solution. Background Art

[0002] In the field of metal surface treatment, phosphating is a common chemical conversion coating process used to improve the corrosion resistance of the metal surface and enhance the adhesion of the paint film. During the phosphating process, the metal needs to be immersed in a solution containing phosphates and undergo a chemical reaction at a certain temperature to form a phosphating film. In this process, the control of temperature is crucial for the quality of the phosphating film.

[0003] The Chinese utility model patent with the publication number CN213417010U proposes a medium-temperature phosphating reaction tank for hardware parts. It includes a phosphating solution tank, a travel guide rail, an electric travel slider, a workpiece mesh tank, a phosphating solution concentration detector, a stirring turbine, a heating rod, a phosphating solution adder, and a temperature sensor,... The stirring turbine is arranged at the center of the bottom of the phosphating solution tank, and multiple heating rods are evenly clamped on the blades of the stirring turbine. A plurality of phosphating solution adders are arranged outside the stirring turbine, and the phosphating solution adder is connected to the phosphating solution concentration detector. A temperature sensor is arranged below the side wall of the phosphating solution tank, and the temperature sensor is connected to the heating rod.

[0004] In order to control the temperature of the phosphating solution, the above device adopts the method of directly extending the heating device (electric heating rod) into the phosphating solution and maintaining the temperature in the reaction tank between 60 and 70 °C by controlling the on or off of the heating device. This treatment method has the following disadvantages:

[0005] First, the heating device is in direct contact with the phosphating solution, which easily causes the temperature of local areas to be too high. This not only affects the uniformity of the phosphating film but also may cause thermal decomposition of the solution or other unwanted chemical reactions.

[0006] Second, since the phosphating solution has certain corrosiveness, long-term direct contact will accelerate the corrosion of the heating rod, shorten its service life, increase the maintenance cost and downtime.

[0007] Therefore, we propose a temperature control device for the production of medium-temperature phosphating solution to solve the above problems. Summary of the Utility Model

[0008] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0009] A temperature control device for the production of medium-temperature phosphating solution, comprising:

[0010] A water bath pool, on both sides of the bottom of the water bath pool, electric heating rods are installed, the heating ends of the electric heating rods extend into the interior of the water bath pool, a control panel is installed on the front of the water bath pool, a temperature sensor is installed at a bottom corner of the front of the water bath pool, the detection end of the temperature sensor extends into the interior of the water bath pool, and the input ends of the temperature sensor and the electric heating rods are electrically connected to the output end of the control panel;

[0011] A reaction pool, fixedly embedded in the middle of the top of the water bath pool, a support plate is fixedly provided at the upper side corner of the interior of the reaction pool, a retaining net is movably arranged on the top of the support plate, and the retaining net is used for placing metal parts;

[0012] A stirring mechanism, arranged at the bottom side of the interior of the reaction pool, and the stirring mechanism is used for stirring the reaction liquid;

[0013] A water circulation assembly, arranged at the bottom of the water bath pool, and the water circulation assembly is used for controlling the inflow and outflow of water inside the water bath pool.

[0014] Further, the water circulation assembly includes a bearing plate arranged directly below the water bath pool, water storage tanks are fixedly provided on both sides of the bearing plate, the water bath pool is fixedly arranged on the upper edge of the water storage tanks, a replacement tank is arranged in the middle of the bearing plate, an overflow pipe is communicated between the upper side of the back surface of the water bath pool and the replacement tank, a first water pump is installed inside the water storage tank, a water inlet pipe is communicated between the water outlet end of the first water pump and the side wall of the water bath pool, a second water pump is installed inside the replacement tank, a return pipe is communicated with the water outlet end of the second water pump, a diversion pipe is communicated between the two water storage tanks above, the end of the return pipe far away from the second water pump is connected to the middle of the diversion pipe, and water valves are installed on both sides of the pipe body of the diversion pipe and located on both sides of the return pipe.

[0015] Further, a throttle valve is installed on the pipe body of the water inlet pipe.

[0016] Further, pull rods are fixedly provided on both sides of the retaining net, the pull rods are U-shaped, and rubber sleeves are sleeved on the upper sides thereof.

[0017] Further, support legs are connected between the four bottom corners of the reaction pool bottom and the water bath pool.

[0018] Further, the stirring mechanism includes a driving motor installed in the middle of the bottom of the water bath pool, a rotating rod is rotatably connected to the bottom of the reaction pool, the output shaft of the driving motor is connected to the bottom end of the rotating rod, and stirring blades are fixedly provided on the side wall of the rotating rod at equal intervals.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. In the present utility model, a reaction tank is embedded in the middle of the top of the water bath tank, and indirect heating by the water bath is adopted, which avoids local high temperature caused by direct heating, ensures more uniform formation of the phosphating film, and at the same time, the heating element does not directly contact the corrosive liquid, reducing corrosion and extending the service life of the equipment.

[0021] 2. In the present utility model, by setting a water circulation component, the first water pump pumps cold water in the water storage tank into the water bath tank through the water inlet pipe, and the water in the water bath tank flows out through the overflow pipe, forming a dynamic balance. The advantages of this are as follows: on the one hand, the water circulation component continuously circulates cold water and hot water, ensuring that the temperature change in the water bath tank is small, reducing thermal shock, avoiding uneven reaction rates caused by temperature fluctuations, ensuring the consistency and repeatability of chemical reactions, and improving production efficiency. In addition, by controlling the water flow to adjust the temperature, the frequent start and stop of the electric heating rod can be reduced, and the electric heating rod can maintain a relatively stable working state for a long time, thereby saving energy and extending the service life of the equipment. Brief Description of the Drawings

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 2 is another three-dimensional structural schematic diagram of the present utility model;

[0024] Figure 3 is a top view schematic diagram of the present utility model;

[0025] Figure 4 is the present utility model Figure 3 is a sectional view taken along the A-A direction in the present utility model.

[0026] Reference Numerals: 1. Water bath tank; 2. Electric heating rod; 3. Control panel; 4. Temperature sensor; 5. Reaction tank; 501. Support leg; 6. Support plate; 7. Mesh; 701. Pull rod; 8. Stirring mechanism; 801. Driving motor; 802. Rotating rod; 803. Stirring blade; 9. Water circulation component; 901. Bearing plate; 902. Water storage tank; 903. Replacement tank; 904. Overflow pipe; 905. First water pump; 906. Water inlet pipe; 907. Second water pump; 908. Return pipe; 909. Diversion pipe; 910. Water valve; 911. Throttle valve. Detailed Description of the Embodiment

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0028] The present application provides a temperature control device for the production of medium-temperature phosphating solution, which is mainly used to solve the problem that in the prior art, the heating device is in direct contact with the phosphating solution, which easily leads to too high temperature in local areas, which will not only affect the uniformity of the phosphating film, but may also cause thermal decomposition of the solution or other undesired chemical reactions, and provides the following technical solutions, which will be described in detail below in conjunction with Figures 1 - 4 for a detailed description:

[0029] A temperature control device for the production of medium-temperature phosphating solution, comprising:

[0030] A water bath pool 1, with electric heating rods 2 installed on both sides of the bottom of the water bath pool 1, the heating ends of the electric heating rods 2 extending into the interior of the water bath pool 1, a control panel 3 installed on the front of the water bath pool 1, and a temperature sensor 4 installed at a bottom corner on the front of the water bath pool 1, the detection end of the temperature sensor 4 extending into the interior of the water bath pool 1, and the input ends of the temperature sensor 4 and the electric heating rods 2 are electrically connected to the output end of the control panel 3;

[0031] A reaction pool 5, fixedly embedded in the middle of the top of the water bath pool 1, with a support plate 6 fixedly provided at the upper side corner inside the reaction pool 5, and a retaining net 7 movably arranged on the top of the support plate 6, and the retaining net 7 is used to place metal parts;

[0032] A stirring mechanism 8, arranged at the bottom side inside the reaction pool 5, and the stirring mechanism 8 is used to stir the reaction solution;

[0033] A water circulation component 9, arranged at the bottom of the water bath pool 1, and the water circulation component 9 is used to control the inflow and outflow of water inside the water bath pool 1. The water circulation component 9 includes a bearing plate 901 arranged directly below the water bath pool 1, with water storage tanks 902 fixedly provided on both sides of the bearing plate 901, the water bath pool 1 is fixedly arranged on the upper edge of the water storage tanks 902, a replacement tank 903 is arranged in the middle of the bearing plate 901, an overflow pipe 904 is connected between the upper side of the back of the water bath pool 1 and the replacement tank 903, a first water pump 905 is installed inside the water storage tanks 902, a water inlet pipe 906 is connected between the water outlet end of the first water pump 905 and the side wall of the water bath pool 1, a second water pump 907 is installed inside the replacement tank 903, a return pipe 908 is connected to the water outlet end of the second water pump 907, a diversion pipe 909 is connected between the upper parts of the two water storage tanks 902, the end of the return pipe 908 far from the second water pump 907 is connected to the middle of the diversion pipe 909, and water valves 910 are installed on both sides of the pipe body of the diversion pipe 909 where the return pipe 908 is located.

[0034] It should be noted that in the initial state, the cooling water is filled in the water storage tanks on both sides, while the middle replacement tank 903 is in a vacant state.

[0035] Description of the working process:

[0036] In use, the operator sets the required temperature of the phosphating solution (usually between 60 and 70 °C) through the control panel 3. The temperature sensor 4 monitors the water temperature in the water bath 1 in real time and feeds the data back to the control panel 3. The electric heating rod 2 heats the water in the water bath 1 according to the instructions of the control panel 3. When the set temperature is reached, the electric heating rod 2 can continue to work. At this time, the water circulation assembly 9 starts to work. The first water pump 905 pumps the water in the water storage tank 902 into the water bath 1 through the water inlet pipe 906, and the water in the water bath 1 flows out through the overflow pipe 904 to form a dynamic balance. By continuously circulating cold water and hot water, the temperature change in the water bath 1 is ensured to be small, reducing thermal shock, avoiding uneven reaction rates caused by temperature fluctuations, ensuring the consistency and repeatability of chemical reactions, and improving production efficiency. When the water in one of the water storage tanks 902 is drained, the second water pump 907 is responsible for discharging the water in the replacement tank 903 through the return pipe 908 and circulating it to this water storage tank 902 through the diversion pipe 909. During the period when the water in this water storage tank 902 is cooled, cold water can be provided to the water bath 1 from the other water storage tank 902. The two water storage tanks 902 are used alternately to avoid wasting water resources. At the same time, the staff can perform phosphating treatment operations. The specific process is to place the metal parts to be phosphated on the retaining net 7 in the reaction tank 5, and the stirring mechanism 8 stirs the phosphating solution to ensure the uniformity of chemical reactions.

[0037] As Figure 4 shown, in some embodiments, a throttle valve 911 is installed on the pipe body of the water inlet pipe 906. More specifically, the throttle valve 911 is mainly used to precisely control the water flow in the water inlet pipe 906. By adjusting the opening of the valve, the amount of cold water entering the water bath 1 can be finely adjusted, which can prevent the water temperature in the water bath 1 from rising too fast and ensure a stable change in temperature.

[0038] As Figure 2 shown, in some embodiments, pull rods 701 are fixedly arranged on both sides of the retaining net 7. The pull rods 701 are U-shaped, and a rubber sleeve is sleeved on the upper side thereof. More specifically, the U-shaped pull rods 701 on the retaining net 7 allow the staff to easily insert or remove the retaining net 7 to place or take metal parts. This design avoids direct contact with the phosphating solution and protects the safety of the operator. The rubber sleeve sleeved on the upper side of the pull rod 701 has an anti-slip function, ensuring that the operator's hand will not slip due to wetness when taking or moving the retaining net 7, increasing the stability and safety of the operation.

[0039] As Figure 4 shown, in some embodiments, support legs 501 are connected between the four corners of the bottom surface of the reaction tank 5 and the water bath 1. More specifically, the setting of the support legs 501 can improve the connection strength between the reaction tank 5 and the water bath 1, making the device more firm and reliable.

[0040] AsFigure 4 As shown, in some embodiments, the stirring mechanism 8 includes a driving motor 801 installed in the middle of the bottom of the water bath tank 1. A rotating rod 802 is rotatably connected to the bottom of the reaction tank 5. The output shaft of the driving motor 801 is connected to the bottom end of the rotating rod 802. Stirring blades 803 are fixedly arranged at equal intervals on the side wall of the rotating rod 802. More specifically, when the driving motor 801 is started, its output shaft rotates, driving the rotating rod 802 and the stirring blades 803 to rotate, thereby stirring the phosphating solution. Through stirring, the chemical substances in the phosphating solution can be fully contacted, accelerating the chemical reaction, shortening the phosphating time. At the same time, stirring helps to evenly distribute the temperature inside the phosphating solution, avoiding local overheating or overcooling phenomena, which is crucial for maintaining stable reaction conditions.

Claims

1. A medium-temperature phosphating solution production temperature control device, characterized in that: include: A water bath (1), wherein electric heating rods (2) are installed on both sides of the bottom of the water bath (1), the heating ends of the electric heating rods (2) extend into the interior of the water bath (1), a control panel (3) is installed on the front of the water bath (1), a temperature sensor (4) is installed at a bottom corner of the front of the water bath (1), the detection end of the temperature sensor (4) extends into the interior of the water bath (1), and the input ends of the temperature sensor (4) and the electric heating rod (2) are electrically connected to the output end of the control panel (3); A reaction pool (5) is fixedly embedded in the middle of the top of the water bath (1); a support plate (6) is fixedly provided at the upper corner inside the reaction pool (5); a blocking net (7) is movably provided on the top of the support plate (6); and the blocking net (7) is used to place metal parts; A stirring mechanism (8) is arranged at the bottom of the reaction tank (5), and the stirring mechanism (8) is used to stir the reaction liquid; A water circulation component (9) is arranged at the bottom of the water bath (1), and the water circulation component (9) is used to control the inflow and outflow of water inside the water bath (1).

2. A medium-temperature phosphating solution production temperature control device according to claim 1, characterized in that: The water circulation assembly (9) comprises a supporting plate (901) arranged directly below the water bath (1), water storage tanks (902) are fixedly arranged on both sides of the supporting plate (901), the water bath (1) is fixedly arranged on the upper edge of the water storage tank (902), a displacement tank (903) is arranged in the middle of the supporting plate (901), an overflow pipe (904) is connected between the upper back side of the water bath (1) and the displacement tank (903), a first water pump (905) is installed inside the water storage tank (902), and the first water pump (905) A water inlet pipe (906) is connected between the water outlet end and the side wall of the water bath (1), a second water pump (907) is installed inside the displacement tank (903), the water outlet end of the second water pump (907) is connected to a return pipe (908), a guide pipe (909) is connected between the tops of the two water storage tanks (902), one end of the return pipe (908) away from the second water pump (907) is connected to the middle of the guide pipe (909), and water valves (910) are installed on both sides of the guide pipe (909) located on the return pipe (908).

3. A medium-temperature phosphating solution production temperature control device according to claim 2, characterized in that: A throttle valve (911) is installed on the pipe body of the water inlet pipe (906).

4. A medium-temperature phosphating solution production temperature control device according to claim 1, characterized in that: Pull rods (701) are fixedly arranged on both sides of the blocking net (7); the pull rods (701) are U-shaped and have rubber sleeves sleeved on their upper sides.

5. A medium-temperature phosphating solution production temperature control device according to claim 1, characterized in that: Support legs (501) are connected between the four corners of the bottom surface of the reaction pool (5) and the water bath (1).

6. A medium-temperature phosphating solution production temperature control device according to claim 1, characterized in that: The stirring mechanism (8) comprises a driving motor (801) installed in the middle of the bottom of the water bath (1); the bottom of the reaction pool (5) is rotatably connected to a rotating rod (802); the output shaft of the driving motor (801) is connected to the bottom end of the rotating rod (802); and the side wall of the rotating rod (802) is fixedly provided with stirring blades (803) at equal intervals.

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