An automatic water replenishment device for a heat treatment cleaning tank

Abstract

This utility model belongs to the technical field of heat treatment cleaning devices, and in particular, an automatic water replenishment device for a heat treatment cleaning tank. It includes a cleaning tank with a water storage tank above it, the outer wall of which is fixedly connected to the inner wall of the cleaning tank. This water replenishment device, through an adjustment mechanism, uses the vertical movement of a float ball that changes with the liquid level in the cleaning tank to drive a linkage mechanism that moves a piston within the inlet pipe, thus automatically opening and closing the inlet. This completely avoids the signal interference problem caused by oil adhesion in traditional immersion probes. Simultaneously, the vertical transmission structure eliminates valve core control deviation caused by linkage tilt, achieving fully automatic water replenishment driven by a fully mechanical system. It operates stably without electricity, simplifying the device structure, reducing the probability of failure, and ensuring accurate liquid level control. This effectively avoids excessively high or low liquid levels, providing a stable liquid level foundation for subsequent oil-water separation processes.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment cleaning devices, and in particular to an automatic water replenishment device for a heat treatment cleaning tank. Background Technology

[0002] In heat treatment processes, the cleaning tank is a key piece of equipment for workpiece surface treatment. The stability of its internal liquid level directly affects the cleaning effect and production safety. When the liquid level is too low, the workpiece cannot be fully immersed in the cleaning solution, which can easily lead to incomplete removal of surface impurities and affect the quality of subsequent heat treatment. On the other hand, if the liquid level is too high, it may cause the cleaning solution to overflow, resulting in waste of raw materials and equipment corrosion. Therefore, achieving precise and automatic control of the cleaning tank liquid level is an important link in ensuring the stable operation of the heat treatment process.

[0003] In existing technologies, automatic water replenishment for cleaning tanks mainly relies on two types of devices. One is an immersion probe device, which monitors changes in the liquid level by directly contacting the probe with the cleaning fluid, thereby triggering the water replenishment action. However, because oil and other impurities often float in the cleaning tank, an oil film easily adheres to the probe surface after long-term use, causing interference with the detection signal, resulting in misjudgments or malfunctions, frequently triggering abnormal water replenishment, and in severe cases, requiring manual intervention to stop the machine, affecting production continuity.

[0004] The second type is the float-type water replenishment device, which uses a float that rises and falls with the liquid level to drive a linkage mechanism to control the water replenishment valve. However, in traditional float designs, the connection between the linkage and the float is often inclined rather than vertically driven. This causes a deviation in the direction of the driving force exerted by the linkage on the valve core when the float rises and falls, resulting in inaccurate control of the valve core's opening and closing degree. In practical applications, deviations of excessively high or low liquid levels often occur, which not only affect the stability of the cleaning fluid concentration but also interfere with the effectiveness of subsequent oil-water separation processes, reducing oil recovery efficiency and cleaning fluid recycling rate.

[0005] To address the above problems, this utility model proposes an automatic water replenishment device for heat treatment cleaning tanks. Utility Model Content

[0006] Based on the technical problems of float-ball degreasing in existing heat treatment cleaning devices, this utility model proposes an automatic water replenishment device for heat treatment cleaning tanks.

[0007] This utility model proposes an automatic water replenishment device for a heat treatment cleaning tank, including a cleaning tank, a water storage tank above the cleaning tank, the outer wall of the water storage tank being fixedly connected to the inner wall of the cleaning tank, an L-shaped fixing frame being fixedly connected to the upper end of the inner wall of the water storage tank, an L-shaped water inlet pipe being slidably connected through the body of the L-shaped fixing frame in a vertical direction, an adjusting plate being fixed to one side of the L-shaped fixing frame by bolts, the lower end of the L-shaped water inlet pipe being fixedly connected to the lower end of the adjusting plate, and the lower end of the L-shaped water inlet pipe penetrating the plate body of the adjusting plate, an adjusting mechanism being provided at one end of the L-shaped water inlet pipe, a support platform being horizontally fixed to the outer side of the cleaning tank, a float being provided below the support platform, and one end of the adjusting mechanism being fixedly connected to the surface of the float.

[0008] Preferably, the adjusting mechanism includes a piston, the outer surface of which is slidably connected to the inner wall of the water inlet pipe, a spring fixedly connected to one end of the piston, a fixing rod fixedly connected to one end of the piston, the fixing rod being located inside the spring, a fixing block fixedly connected to one end of the fixing rod, the outer side of the fixing block being an inclined surface, a groove being formed on the inclined surface of the fixing block, a pull rod slidably connected to the inner wall of the groove, an L-shaped connecting rod fixedly connected to one end of the pull rod, a vertical rod being rotatably connected to one end of the L-shaped connecting rod via a pin, and the lower end of the vertical rod being fixedly connected to the surface of the float.

[0009] Preferably, the height of the adjusting plate is adjusted by bolts.

[0010] Preferably, the surface of the piston and the inner wall of the water inlet pipe are coated with a sealing coating, the piston is frustum-shaped, and the inner wall of the water inlet pipe is provided with a rubber gasket that matches the frustum surface of the piston.

[0011] Preferably, the lower end of the water inlet pipe is provided with a water outlet, which is located below the piston.

[0012] Preferably, the support platform has a through hole, through which the vertical rod passes and can slide vertically.

[0013] The beneficial effects of this utility model are as follows:

[0014] By setting up an adjustment mechanism, the vertical rise and fall of the float ball according to the change of the liquid level in the cleaning tank drives the linkage mechanism to move the piston in the water inlet pipe to achieve automatic opening and closing of the water inlet. This completely avoids the signal interference problem caused by oil adhesion in traditional immersion probes. At the same time, the vertical transmission structure eliminates the valve core control deviation caused by the tilt of the linkage, realizing fully automatic water replenishment driven by a fully mechanical system. It can operate stably without electricity, which not only simplifies the device structure and reduces the probability of failure, but also ensures the accuracy of liquid level control, effectively avoiding excessively high or low liquid levels, and providing a stable liquid level basis for subsequent oil-water separation processes. The piston adopts a frustum-shaped design and cooperates with the rubber gasket on the inner wall of the water inlet pipe. At the same time, a sealing coating is applied. This double sealing structure significantly improves the sealing effect when the piston is closed, which can effectively prevent water leakage and ensure the stability of the liquid level when water replenishment stops. It avoids fluctuations in the concentration of cleaning solution due to minor leakage, and further guarantees the quality of heat treatment cleaning. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an automatic water replenishment device for a heat treatment cleaning tank proposed in this utility model;

[0016] Figure 2 This is a perspective view of the L-shaped water inlet pipe of an automatic water replenishment device for a heat treatment cleaning tank proposed in this utility model;

[0017] Figure 3 This is a cross-sectional view of the L-shaped water inlet pipe of an automatic water replenishment device for a heat treatment cleaning tank proposed in this utility model.

[0018] Figure 4 This is a perspective view of the pull rod of an automatic water replenishment device for a heat treatment cleaning tank proposed in this utility model.

[0019] In the diagram: 1. Cleaning tank; 2. Water storage tank; 3. L-shaped fixing frame; 4. Adjusting plate; 5. Water inlet pipe; 6. Adjusting mechanism; 61. Piston; 62. Spring; 63. Fixing rod; 64. Fixing block; 65. Pull rod; 66. L-shaped connecting rod; 7. Support platform; 8. Float. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4An automatic water replenishment device for a heat treatment cleaning tank includes a cleaning tank 1, a water storage tank 2 above the cleaning tank 1, the outer wall of the water storage tank 2 being fixedly connected to the inner wall of the cleaning tank 1, an L-shaped fixing frame 3 being fixedly connected to the upper end of the inner wall of the water storage tank 2, an L-shaped water inlet pipe 5 being slidably connected through the body of the L-shaped fixing frame 3 in the vertical direction, an adjusting plate 4 being fixed to one side of the L-shaped fixing frame 3 by bolts, the lower end of the L-shaped water inlet pipe 5 being fixedly connected to the lower end of the adjusting plate 4, and the lower end of the L-shaped water inlet pipe 5 penetrating the plate body of the adjusting plate 4, an adjusting mechanism 6 being provided at one end of the L-shaped water inlet pipe 5, a support platform 7 being horizontally fixed to the outer side of the cleaning tank 1, a float ball 8 being provided below the support platform 7, and one end of the adjusting mechanism 6 being fixedly connected to the surface of the float ball 8.

[0022] In this embodiment, the adjusting mechanism 6 includes a piston 61. The outer surface of the piston 61 is slidably connected to the inner wall of the water inlet pipe 5. A spring 62 is fixedly connected to one end of the piston 61, and a fixing rod 63 is fixedly connected to one end of the piston 61. The fixing rod 63 is located inside the spring 62. A fixing block 64 is fixedly connected to one end of the fixing rod 63. The outer surface of the fixing block 64 is set as an inclined surface. A groove is opened on the inclined surface of the fixing block 64. A pull rod 65 is slidably connected to the inner wall of the groove. An L-shaped connecting rod 66 is fixedly connected to one end of the pull rod 65. One end of the L-shaped connecting rod 66 is rotatably connected to one end of the water inlet pipe 5 through a pin. A vertical rod is rotatably connected to one end of the L-shaped connecting rod 66 through a pin. The lower end of the vertical rod is fixedly connected to the surface of the float 8.

[0023] Specifically, when the liquid level in the cleaning tank 1 is lower than the set value, the float 8 descends with the liquid level and drives the vertical rod to move downward. The vertical rod pulls the L-shaped connecting rod 66 around the connection point at the end of the water inlet pipe 5 through the pin shaft, causing the pull rod 65 at the other end of the L-shaped connecting rod 66 to slide upward along the sliding groove on the inclined surface of the fixed block 64. At this time, the pull rod 65 generates a horizontal thrust on the fixed block 64, pushing the fixed rod 63 and the piston 61 to move away from the outlet along the inner wall of the water inlet pipe 5. At the same time, the spring 62 is compressed. As the piston 61 separates from the rubber gasket on the inner wall of the water inlet pipe 5, the outlet of the water inlet pipe 5 is opened, and the water in the water storage tank flows into the cleaning tank through the L-shaped water inlet pipe to replenish the water.

[0024] During this process, the sliding fit between the pull rod 65 and the groove of the fixed block 64, and the pin connection between the L-shaped connecting rod 66 and the vertical rod are all movable connections, ensuring that the lifting and lowering movement of the float 8 can be smoothly transmitted to the piston 61; the elasticity setting of the spring 62 matches the buoyancy of the float 8, which not only ensures the sealing force of the piston 61 when the liquid level reaches the standard, but also allows it to be smoothly compressed when the liquid level drops, realizing fully automatic control of the water replenishment process.

[0025] In this embodiment, the height of the adjusting plate 4 is adjusted by bolts.

[0026] Specifically, the adjusting plate 4 and the L-shaped fixing bracket 3 are connected by at least two bolts. The bolts pass through the strip-shaped holes opened on the adjusting plate 4 and are threadedly connected to the L-shaped fixing bracket 3. When it is necessary to adjust the target water level of the cleaning tank, the adjusting plate 4 can be moved up and down vertically after the bolts are loosened, which will drive the L-shaped water inlet pipe 5 and the entire adjusting mechanism 6 to rise and fall synchronously. After the position is determined, the bolts can be tightened to fix it, so as to achieve flexible setting of the target water level.

[0027] In this embodiment, the surface of the piston 61 and the inner wall of the water inlet pipe 5 are coated with a sealing coating. The piston 61 is frustum-shaped, and the inner wall of the water inlet pipe 5 is provided with a rubber gasket that matches the frustum surface of the piston 61.

[0028] Specifically, the sealing coating is made of polytetrafluoroethylene, which can reduce the friction between the piston 61 and the inner wall of the water inlet pipe 5 and enhance the sealing performance. The outer surface of the frustum-shaped piston 61 is inclined at an angle that perfectly matches the inclination angle of the rubber gasket on the inner wall of the water inlet pipe 5. When the piston 61 is reset under the thrust of the spring 62, the side of the frustum fits tightly with the rubber gasket to form a line seal structure. This, together with the sealing coating, achieves a double seal and significantly reduces the risk of leakage.

[0029] In this embodiment, the lower end of the water inlet pipe 5 is provided with a water outlet, which is located below the piston 61.

[0030] Specifically, the water outlet is designed in a funnel shape, with a diameter slightly smaller than the bottom diameter of the piston 61. When the piston 61 moves horizontally to the right, the water outlet is fully exposed, and water is quickly injected into the cleaning tank 1 through the water outlet of the water storage tank 2; when the piston 61 returns to its horizontal position to the left, the frustum-shaped bottom can completely cover the water outlet, achieving a seal through cooperation with the rubber gasket, ensuring that no residual water overflows when water replenishment stops.

[0031] In this embodiment, the support platform 7 has a through hole, through which the vertical rod passes and can slide vertically.

[0032] Specifically, a copper sleeve is inlaid on the inner wall of the through hole. The inner diameter of the copper sleeve is fitted with the outer diameter of the vertical rod with a clearance, which ensures that the vertical rod can rise and fall freely with the float 8, and also restricts the lateral sway of the vertical rod. The support platform 7 is fixed to the outer wall of the cleaning tank 1 by welding. Its height is slightly higher than the highest liquid level of the cleaning tank 1, so that the vertical rod is always in a vertical force state, ensuring that the rising and falling motion of the float 8 can be accurately transmitted to the L-shaped connecting rod 66, and improving the stability of the adjustment mechanism 6.

[0033] Operating principle:

[0034] When the liquid level in the cleaning tank 1 drops due to workpiece removal or evaporation, the float 8 drops synchronously with the liquid level, causing the vertical rod to move downwards. This, in turn, pulls the L-shaped connecting rod 66 around the connection point at the end of the water inlet pipe 5 via the pin. The rotation of the L-shaped connecting rod 66 causes the pull rod 65 to slide upwards along the inclined surface groove of the fixed block 64, generating a horizontal pulling force on the fixed block 64. This pulls the fixed rod 63 and the piston 61 to overcome the elastic force of the spring 62 and move away from the water outlet. As the piston 61 separates from the rubber gasket, the water outlet of the water inlet pipe 5 is opened. Under the action of gravity, the water in the water storage tank 2 flows into the cleaning tank 1 through the water outlet of the L-shaped water inlet pipe 5, and water replenishment begins.

[0035] During the water replenishment process, the liquid level in the cleaning tank 1 gradually rises, the float 8 rises accordingly and drives the vertical rod to move upward. The pulling force of the vertical rod on the L-shaped connecting rod 66 gradually decreases. When the liquid level approaches the set value, the elastic force of the spring 62 gradually overcomes the external force and pushes the piston 61 to reset. The end of the L-shaped connecting rod 66 rotates in the opposite direction, and the pull rod 65 slides down the groove of the fixed block 64 until the liquid level reaches the set value. The piston 61 is fully reset and fits tightly with the rubber gasket. A double seal is formed by the frustum-shaped structure and the sealing coating, closing the water outlet and terminating the water replenishment process.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic water replenishment device for a heat treatment cleaning tank, comprising a cleaning tank (1), characterized in that: A water storage tank (2) is provided above the cleaning tank (1). The outer wall of the water storage tank (2) is fixedly connected to the inner wall of the cleaning tank (1). An L-shaped fixing frame (3) is fixedly connected to the upper end of the inner wall of the water storage tank (2). An L-shaped water inlet pipe (5) is slidably connected through the body of the L-shaped fixing frame (3) in the vertical direction. An adjusting plate (4) is fixed to one side of the L-shaped fixing frame (3) by bolts. The lower end of the L-shaped water inlet pipe (5) is fixedly connected to the lower end of the adjusting plate (4), and the lower end of the L-shaped water inlet pipe (5) passes through the plate body of the adjusting plate (4). An adjusting mechanism (6) is provided at one end of the L-shaped water inlet pipe (5). A support platform (7) is fixed horizontally on the outer side of the cleaning tank (1). A float (8) is provided below the support platform (7). One end of the adjusting mechanism (6) is fixedly connected to the surface of the float (8).

2. The automatic water replenishment device for a heat treatment cleaning tank according to claim 1, characterized in that: The adjusting mechanism (6) includes a piston (61), the outer surface of which is slidably connected to the inner wall of the water inlet pipe (5), a spring (62) is fixedly connected to one end of the piston (61), a fixing rod (63) is fixedly connected to one end of the piston (61), the fixing rod (63) is located inside the spring (62), a fixing block (64) is fixedly connected to one end of the fixing rod (63), the outer side of the fixing block (64) is set as an inclined surface, a groove is opened on the inclined surface of the fixing block (64), a pull rod (65) is slidably connected to the inner wall of the groove, an L-shaped connecting rod (66) is fixedly connected to one end of the pull rod (65), a vertical rod is rotatably connected to one end of the L-shaped connecting rod (66) through a pin, and the lower end of the vertical rod is fixedly connected to the surface of the float (8).

3. The automatic water replenishment device for a heat treatment cleaning tank according to claim 2, characterized in that: The height of the adjusting plate (4) is adjusted by bolts.

4. The automatic water replenishment device for a heat treatment cleaning tank according to claim 3, characterized in that: The surface of the piston (61) and the inner wall of the water inlet pipe (5) are coated with a sealing coating. The piston (61) is frustum-shaped, and the inner wall of the water inlet pipe (5) is provided with a rubber gasket that matches the frustum surface of the piston (61).

5. The automatic water replenishment device for a heat treatment cleaning tank according to claim 4, characterized in that: The lower end of the water inlet pipe (5) is provided with a water outlet, which is located below the piston (61).

6. The automatic water replenishment device for a heat treatment cleaning tank according to claim 2, characterized in that: The support platform (7) has a through hole, through which the vertical rod passes and can slide vertically.

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