Filtering and impurity removing device for quenching bath

Abstract

The utility model discloses a filtering and impurity-removing device for a quenching bath, which belongs to the technical field of oil and gas transportation and comprises a flat car, a filtering plate component is vertically and fixedly connected onto the flat car, gaps are reserved between two sides of the filtering plate component and the side wall of the quenching bath, and the lower end of the filtering plate component is close to the bottom of the quenching bath and is fixedly connected with a suction hood; the lower end of a suction pipe communicates with the suction cover, the middle of the suction pipe penetrates through the filter plate assembly, and the upper end of the suction pipe extends into the bottom of the oil tank; a filter sieve located above the suction pipe is arranged in the middle of the oil tank, and a suction pump is fixedly arranged at the upper end of the oil tank; and the tail end of a liquid inlet pipe of the suction pump extends into the oil tank and is positioned above the filter sieve, and the tail end of a liquid outlet pipe of the suction pump extends below the liquid level of quenching liquid in the quenching bath. According to the utility model, quenching liquid from the bottom of the quenching bath can be directly filtered, impurities floating in the quenching bath can be transversely filtered at the same time, large-particle and small-particle impurities in the quenching bath can be cleaned at the same time, and the filtering effect and efficiency are greatly improved due to the simultaneous operation of double filtering.

Description

Technical Field

[0001] This utility model belongs to the field of metal heat treatment technology and relates to a quenching tank filtration and impurity removal device. Background Technology

[0002] During workpiece quenching, oxide scale and dust detached from the workpiece surface mix into the quenching fluid. Excessive accumulation of impurities adheres to the workpiece surface, affecting the heat treatment quality. To remove these impurities, existing technologies, such as the patent with publication number CN 208562458 U, "A Quenching Pool Impurity Removal and Filtration Device," install a filter cover at the oil outlet of the oil tank, allowing the quenching oil to flow through the tank to filter out impurities. However, this method has the drawback of requiring the quenching fluid to flow through the filter cover for a long time to achieve the filtration effect, resulting in low efficiency. This is especially problematic for quenching pools used for heat treatment of large workpieces, where the quenching fluid volume is enormous, and the long time required for circulation filtration and the high power consumption for driving the fluid flow are significant. Another example is the patent with publication number CN 203976865 U, "A Heat Treatment Quenching Medium Cleaning Device," which pre-lays a filter screen at the bottom of the quenching pool and then uses a pull line to retrieve the screen, thus filtering out impurities. Its drawback is that fine particles such as dust falling into the quenching tank will settle and form sludge. After prolonged use, the settled sludge will clog the filter screen's pores, causing the filter screen to malfunction. Therefore, this type of filter can only filter large particles such as iron filings or oxide scale, and its filtering effect on small particles such as sludge is poor. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a quenching pool filtration and impurity removal device. The purpose is to design a transverse filtration sieve plate and to clean the sludge settled at the bottom of the quenching pool by suction. It can clean both large and small particles of impurities in the quenching pool at the same time, and has high filtration efficiency, quickly and effectively cleaning impurities in large quenching pools.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a quenching tank filtration and impurity removal device, comprising a flatbed cart with rollers at the bottom, the rollers sitting on the upper edge of the quenching tank for the flatbed cart to move horizontally along the upper edge of the quenching tank; a filter plate assembly vertically fixed to the flatbed cart, with gaps between its two sides and the side walls of the quenching tank, and its lower end near the bottom of the quenching tank and fixedly connected to a suction hood; the lower end of a suction pipe communicating with the suction hood, the middle part of which penetrates the filter plate assembly, and its upper end extending into the bottom of an oil tank; a filter screen located above the suction pipe in the middle of the oil tank, with a suction pump fixedly mounted on its upper end; the end of the inlet pipe of the suction pump extending into the oil tank and above the filter screen, and the end of its outlet pipe extending below the surface of the quenching liquid in the quenching tank.

[0005] As a further optimization, brush belts are fixed to both sides of the filter plate assembly, with the ends of the brush bristles abutting against the sidewall of the quenching tank.

[0006] As a further optimization, the end of the drain pipe is positioned near the bottom of the quenching tank and close to the suction hood.

[0007] As a further optimization, the filter plate assembly includes a rectangular frame, within which multiple horizontal beams and multiple vertical beams are fixedly connected, dividing the frame into multiple squares. Each square contains a detachably mounted filter screen. The vertical beams are hollow, and a suction tube passes through them, with its center penetrating the filter plate assembly. A suction hood is fixedly connected to the bottom of the frame, and the top of the frame is fixedly connected to the flatbed.

[0008] As a further optimization, the multiple suction pipes are connected to one oil tank, and the number of suction pumps fixed at the upper end of the oil tank is the same as the number of suction pipes; the multiple suction pumps are evenly spaced along the width direction of the filter plate assembly; the ends of the multiple drain pipes are evenly spaced on the side of the suction hood.

[0009] Compared with the prior art, the beneficial effects of this utility model are: this utility model can directly filter the quenching liquid from the bottom of the quenching pool and simultaneously filter impurities floating in the quenching pool laterally. It can clean both large and small particles of impurities in the quenching pool at the same time. The dual filtration works simultaneously, which greatly improves the filtration effect and efficiency; it can be adapted to the cleaning of large quenching pools. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the filter plate assembly according to an embodiment of the present invention;

[0012] Figure 3 This is a cross-sectional structural diagram of the filter plate assembly according to an embodiment of the present invention;

[0013] Figure 4 for Figure 1 Top view.

[0014] The correspondence between the technical features in the figure and the reference numerals is as follows: flatbed 1; roller 11; quenching tank 2; filter plate assembly 3; brush belt 31; frame 32; crossbeam 33; vertical beam 34; filter screen plate 35; stop frame 36; suction hood 4; suction pipe 5; oil tank 6; filter screen 61; suction pump 7; inlet pipe 71; outlet pipe 72. Detailed Implementation

[0015] 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.

[0016] Example 1, please refer to Figure 1-4 This utility model provides a technical solution: a quenching tank filtration and impurity removal device, including a flatbed cart 1 with rollers 11 at the bottom, the rollers 11 sitting on the upper edge of the quenching tank 2, for the flatbed cart 1 to move horizontally along the upper edge of the quenching tank 2; a filter plate assembly 3 is vertically fixed to the flatbed cart 1, with gaps between its two sides and the side walls of the quenching tank 2, and its lower end near the bottom of the quenching tank 2 and fixed to a suction hood 4; the lower end of a suction pipe 5 is connected to the suction hood 4, the middle part of which passes through the filter plate assembly 3, and its upper end extends into the bottom of an oil tank 6; a filter screen 61 located above the suction pipe 5 is provided in the middle of the oil tank 6, and a suction pump 7 is fixed to its upper end; the end of the inlet pipe 71 of the suction pump 7 extends into the oil tank 6 and is located above the filter screen 61, and the end of its outlet pipe 72 extends below the surface of the quenching liquid in the quenching tank 2.

[0017] In use, the oil tank 6 is pre-filled with quenching fluid, and then the suction pump 7 is started. The quenching fluid in the quenching pool 2 flows sequentially through the suction hood 4, suction pipe 5, oil tank 6, inlet pipe 71, suction pump 7, and outlet pipe 72 before returning to the quenching pool 2. It can be seen that the filter screen 61 in the oil tank 6 can directly filter the quenching fluid from the bottom of the quenching pool 2. This part of the quenching fluid contains a lot of sludge-like impurities, resulting in high filtration efficiency. Simultaneously, the flatbed cart 1 is moved horizontally. During this movement, the filter plate assembly 3 can filter the quenching fluid laterally, allowing impurities floating in the quenching pool 2 to be filtered simultaneously. This dual filtration method working simultaneously greatly improves filtration efficiency. After the filter plate assembly 3 is moved from one end of the quenching pool 2 to the other, the flatbed cart 1 and the filter plate assembly 3 can be lifted together. The filter layer inside the filter plate assembly 3 can be cleaned or replaced outside the quenching pool 2, and then it can be returned to the quenching pool 2 for secondary filtration. Furthermore, when it is not necessary to clean impurities, this device can be moved away from the quenching tank 2, without taking up space or affecting the operation of the quenching process, making it convenient to use.

[0018] To improve sealing, brush belts 31 are fixedly connected to both sides of the filter plate assembly 3, with the ends of the brush bristles of the brush belts 31 abutting against the side wall of the quenching tank 2. It is evident that the brush belts 31 also have a filtering function, filtering impurities in the gaps and supporting the filter plate assembly 3 without hindering its translation.

[0019] To further improve the cleaning effect of the sludge at the bottom of the quenching tank 2, the end of the drain pipe 72 is located close to the bottom of the quenching tank 2 and close to the suction hood 4. The quenching liquid discharged by the drain pipe 72 washes the bottom of the quenching tank 2, causing the sludge and other impurities to be washed up and more easily collected by the suction hood 4, thus improving the cleaning effect.

[0020] An exemplary structure of the filter plate assembly 3 includes a rectangular frame 32. Multiple horizontal beams 33 and multiple vertical beams 34 are fixedly connected within the frame 32, dividing the frame 32 into multiple squares. A filter screen 35 is detachably installed in each square. The vertical beams 34 are hollow, and a suction pipe 5 passes through them, with its middle portion penetrating the filter plate assembly 3. A suction cover 4 is fixedly connected to the bottom of the frame 32, and the top of the frame 32 is fixedly connected to the flatbed trolley 1. As can be seen, the filter screen 35 is a component that performs the filtering function. The frame 32, horizontal beams 33, and vertical beams 34 form a supporting frame, and the vertical beams 34 provide a channel for the suction pipe 5 to be embedded in the filter plate assembly 3. Each filter screen 35 is fixedly connected to a stop frame 36, and the edge of the stop frame 36 is mounted to the supporting frame with screws, allowing each filter screen 35 in each square to be individually replaced or cleaned.

[0021] To improve reliability, multiple suction pipes 5 are connected to an oil tank 6. The number of suction pumps 7 fixed to the upper end of the oil tank 6 is the same as the number of suction pipes 5. The multiple suction pumps 7 are evenly spaced along the width direction of the filter plate assembly 3. The ends of multiple drain pipes 72 are evenly spaced on the side of the suction hood 4. Therefore, even if one suction pipe 5 is blocked while multiple suction pipes 5 are working simultaneously, it will not affect the continued operation of the device. Similarly, even if one suction pump 7 fails, the device can still continue to operate. Thus, the multiple suction pipes 5, multiple suction pumps 7, and multiple drain pipes 72 form a redundant operating system, improving the fault tolerance of the equipment and making the device more reliable.

[0022] The advantage of this embodiment is that the device can directly filter the quenching liquid from the bottom of the quenching pool 2, and at the same time filter the impurities floating in the quenching pool 2 laterally. It can clean both large and small particles of impurities in the quenching pool 2 at the same time. The dual filtration works simultaneously, which greatly improves the filtration effect and efficiency. It can be adapted to cleaning large quenching pools 2.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quenching tank filtration and impurity removal device, comprising a flatbed cart (1) with rollers (11) at its bottom, the rollers (11) sitting on the upper edge of the quenching tank (2), for the flatbed cart (1) to be able to move horizontally along the upper edge of the quenching tank (2); characterized in that: The filter plate assembly (3) is vertically fixed to the flatbed cart (1), with gaps between its two sides and the side walls of the quenching pool (2). Its lower end is close to the bottom of the quenching pool (2) and is fixedly connected to a suction hood (4). The lower end of the suction pipe (5) is connected to the suction hood (4), and its middle part penetrates the filter plate assembly (3). Its upper end extends into the bottom of the oil tank (6). The oil tank (6) is fixed to the flatbed cart (1), and its middle part is provided with a filter screen (61) located above the suction pipe (5). A suction pump (7) is fixed at its upper end. The end of the inlet pipe (71) connected to the suction pump (7) extends into the oil tank (6) and is located above the filter screen (61). The end of the drain pipe (72) connected to the pump extends below the surface of the quenching liquid in the quenching pool (2).

2. The quenching tank filtration and impurity removal device according to claim 1, characterized in that: Brush belts (31) are fixed to both sides of the filter plate assembly (3), and the ends of the bristles of the brush belts (31) abut against the side wall of the quenching pool (2).

3. The quenching tank filtration and impurity removal device according to claim 1, characterized in that: The end of the drain pipe (72) is close to the bottom of the quenching pool (2) and is arranged close to the suction hood (4).

4. The quenching tank filtration and impurity removal device according to claim 1, characterized in that: The filter plate assembly (3) includes a rectangular frame (32), in which multiple crossbeams (33) and multiple vertical beams (34) are fixedly connected, dividing the frame (32) into multiple squares, and a filter screen plate (35) is detachably installed in each square; the vertical beams (34) are hollow inside, and the suction pipe (5) passes through the vertical beams (34) for the middle part of the suction pipe (5) to penetrate the filter plate assembly (3); the suction cover (4) is fixedly connected to the bottom of the frame (32), and the top of the frame (32) is fixedly connected to the flatbed (1).

5. The quenching tank filtration and impurity removal device according to claim 4, characterized in that: Multiple suction pipes (5) are connected to an oil tank (6), and the number of suction pumps (7) fixed at the upper end of the oil tank (6) is the same as the number of suction pipes (5); multiple suction pumps (7) are evenly distributed at intervals along the width direction of the filter plate assembly (3); the ends of multiple drain pipes (72) are evenly distributed at intervals on the side of the suction cover (4).

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