A multi-stage filtering and purifying integrated device for tung oil

Abstract

The utility model discloses a kind of tung oil multistage filtration purification integration device, to effectively solve the problem of insufficient filtering of single filter material in background art, and the poor effect of forward flushing. For this purpose, the tung oil multistage filtration purification integration device provided by the utility model, including filter tank, the filter tank is sequentially provided with primary filter plate, micropore filter plate and activated carbon filter plate along the direction of tung oil flow, the filter tank is also provided with backwashing component for washing each filter plate, the backwashing component includes washing spray pipe corresponding to the back of each filter plate and driving member for driving the up and down movement of the washing spray pipe, a plurality of washing nozzles are provided on the washing spray pipe, which are aligned with the corresponding filter plate.

Description

Technical Field

[0001] This utility model relates to the field of tung oil processing technology, and in particular to an integrated device for multi-stage filtration and purification of tung oil. Background Technology

[0002] Tung oil, a natural drying vegetable oil, is widely used in coatings, inks, furniture manufacturing, waterproofing materials, and anti-corrosion treatments due to its excellent permeability, water resistance, and anti-corrosion properties. The purity of tung oil directly affects the quality, performance, and lifespan of its downstream products; therefore, effective filtration and purification during the production process are crucial for ensuring its quality.

[0003] Currently, in the tung oil processing industry, traditional filtration and purification devices mostly employ a single flat-plate filter structure. This structure has several drawbacks: First, a single filtration layer or filter media is often insufficient to handle the diverse contaminants, such as particulate impurities, colloids, and pigments mixed in tung oil, easily leading to incomplete filtration and poor purification. Second, the limited effective filtration area of ​​the flat-plate filter results in low processing efficiency per unit time, easily becoming a production bottleneck.

[0004] Furthermore, existing devices have significant shortcomings in terms of cleaning and maintenance of filter media. The commonly used method of directly using large amounts of water for forward rinsing is not only water-intensive but also not very effective at cleaning.

[0005] In conclusion, it is necessary to improve the existing tung oil filtration and purification equipment. Summary of the Invention

[0006] The main purpose of this utility model is to provide an integrated device for multi-stage filtration and purification of tung oil, which aims to effectively solve the problems of insufficient filtration by a single filter material and poor forward rinsing effect in the prior art.

[0007] Therefore, the present invention provides an integrated multi-stage filtration and purification device for tung oil, including a filtration tank. The filtration tank is provided with a primary filter plate, a microporous filter plate and an activated carbon filter plate in sequence along the flow direction of the tung oil. The filtration tank is also provided with a backwashing assembly for rinsing each filter plate. The backwashing assembly includes a rinsing nozzle corresponding to the back of each filter plate and a driving component for moving the rinsing nozzle up and down. The rinsing nozzle is provided with a plurality of rinsing nozzles aligned with the corresponding filter plates.

[0008] Specifically, a water storage tank is provided below the filter pool, and a flushing water return valve connected to the water storage tank is provided at the bottom of the filter pool. A microporous filter drawer is provided inside the water storage tank, and a microporous filter screen is provided inside the microporous filter drawer. The flushing spray pipe is connected to the water storage tank through a water supply pipe, and a water pump is provided on the water supply pipe.

[0009] Specifically, the filter plate is a corrugated filter plate.

[0010] Specifically, the top of the filter tank is provided with a fixed frame, and the driving component is an electric push rod fixedly installed on the fixed frame. Each of the flushing nozzles is connected to the electric push rod.

[0011] Specifically, the filter tank has an oil inlet pipe at the top of one side and an oil outlet pipe at the bottom of the other side.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. High filtration precision and efficiency: It adopts a three-stage progressive filtration (pre-filtration, microporous filtration, and activated carbon adsorption), which significantly improves the filtration precision of tung oil. The corrugated filter plate structure increases the filtration area and achieves high filtration efficiency.

[0013] 2. Thorough cleaning effect and long filter life: The innovative reverse flushing technology is used. During flushing, the water flow direction is opposite to the oil flow direction during filtration. This can effectively "push out" deeply embedded impurities from the back of the filter media. The strong flushing force makes the cleaning more thorough, effectively restores the permeability of the filter media, and significantly extends its service life.

[0014] 3. By integrating the purification tank and water supply components, the rinsing wastewater is collected, purified, and recycled for the next cleaning, forming a closed-loop water circulation system, which solves the problems of high water consumption and large amount of wastewater in traditional forward rinsing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the backwashing assembly structure of this utility model; Figure 4 This is a schematic diagram of the microporous filter drawer structure of this utility model; In the diagram: 1. Filter tank; 2. Backwash assembly; 21. Diverter pipe; 22. Flushing nozzle; 3. Water storage tank; 4. Microporous filter drawer; 5. Water supply assembly; 51. Water pump; 52. Water supply pipe; 6. Slot; 7. Primary filter plate; 8. Microporous filter plate; 9. Activated carbon filter plate; 10. Fixing frame; 11. Electric push rod; 12. Flushing nozzle; 13. Oil inlet pipe; 14. Oil outlet pipe; 15. Flushing water return valve. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] See Figures 1-3 A multi-stage filtration and purification integrated device for tung oil includes a filtration tank 1. Inside the filtration tank 1, from left to right, a primary filter plate 7, a microporous filter plate 8, and an activated carbon filter plate 9 are arranged in sequence along the flow direction of the tung oil. The filtration tank 1 is also equipped with a backwashing assembly 2 for rinsing each filter plate. The backwashing assembly 2 includes a rinsing nozzle 22 corresponding to the back of each filter plate and a driving component for moving the rinsing nozzle 22 up and down. The rinsing nozzle 22 is equipped with multiple rinsing nozzles 12 aligned with the corresponding filter plates. An oil inlet pipe 13 is provided at the top left side of the filtration tank 1, and an oil outlet pipe 14 is provided at the bottom right side.

[0021] The working process of the integrated device is as follows: The tung oil raw material to be processed enters the filter tank 1 through the oil inlet pipe 13, first reaching the primary filter plate 7, which effectively intercepts large particulate impurities, plant fibers, and other solid suspended matter in the tung oil, completing the initial purification. The tung oil after primary filtration continues to flow through the microporous filter plate 8. This stage of filtration uses microporous filtration technology, which can effectively intercept even finer colloids and micron-sized particles, significantly improving the clarity of the tung oil. Finally, the tung oil passes through the activated carbon filter plate 9. Activated carbon, with its huge specific surface area and strong adsorption performance, deeply adsorbs residual pigments, odor molecules, and trace amounts of polar harmful substances in the tung oil, achieving decolorization, deodorization, and refining, ultimately obtaining high-purity refined tung oil, which is discharged and collected through the oil outlet pipe 14. After a period of use, the filter plates need to be cleaned. The drive unit is activated, causing the flushing spray pipe 22 to move up and down reciprocally, simultaneously performing high-pressure reverse flushing on the three sets of filter plates. The direction of the reverse flushing water flow is opposite to the direction of the oil flow during filtration, which can effectively "push out" impurities clogging deep in the filter media, resulting in a thorough cleaning effect.

[0022] This invention employs a three-stage progressive filtration system (primary filtration, microporous filtration, and activated carbon adsorption), significantly improving the filtration accuracy of tung oil. In particular, the use of a corrugated filter plate structure increases the filtration area and results in high filtration efficiency. It innovatively utilizes reverse flushing technology, where the water flow direction is opposite to the oil flow direction during filtration. This effectively "push out" deeply embedded impurities from the back of the filter media, resulting in strong flushing power, more thorough cleaning, and effective restoration of the filter media's permeability, significantly extending its service life.

[0023] See Figure 1 and Figure 4 It is understandable that a water storage tank 3 can be provided below the filter pool 1. A flushing water return valve 15 connected to the water storage tank 3 is provided at the bottom of the filter pool 1. A microporous filter drawer 4 is provided inside the water storage tank 3. A microporous filter screen is provided inside the microporous filter drawer 4. The flushing spray pipe 22 is connected to the water storage tank through the water supply pipe 52. A water pump 51 is provided on the water supply pipe 52. The water storage tank 3, the water pump 51, and the water supply pipe 52 together form the water supply component 5.

[0024] In this embodiment, by opening the flushing water return valve 15, the wastewater generated during flushing flows into the water storage tank 3 through the flushing water return valve 15. The microporous filter drawer 4 performs solid-liquid separation on the wastewater, removing sludge and impurities. The purified water is stored at the bottom of the tank. Subsequently, the water pump 51 is started, and the purified water is pumped back into the backwash assembly 2 through the water supply pipe 52, realizing the recycling of cleaning water resources and significantly saving water.

[0025] Specifically, the top of the filter tank 1 is provided with a fixed frame 10, and the driving component is an electric push rod 11 fixedly installed on the fixed frame 10. Each flushing spray pipe 22 is connected to the main pipe through the diversion pipe 21. The main pipe is connected to the output end of the electric push rod 11, and the water supply pipe 52 is connected to the main pipe.

[0026] The working process of this utility model is mainly divided into two core stages: filtration operation and backwashing circulation. The specific steps are as follows: (a) Filtering Operation Phase Filter plate installation and positioning: The filter plates are provided with slots 6 on both sides. The slots 6 are fixed to the corresponding filter plates by fixing bolts. After the operator inserts the primary filter plate 7, microporous filter plate 8 and activated carbon filter plate 9 into the filter tank 1 in sequence, the slots 6 at both ends of each filter plate are matched and locked to the top of the side plate of the filter tank 1 to achieve quick positioning and fixing.

[0027] Multi-stage filtration is initiated: the tung oil raw material to be treated enters the filtration tank 1 through the oil inlet pipe 13, and flows sequentially through the primary filter plate 7, the microporous filter plate 8, and the activated carbon filter plate 9. This three-stage progressive filtration system achieves the interception of large solid particles, the precise filtration of fine suspended solids, and the adsorption and purification of pigments and odor molecules. Finally, the purified tung oil is discharged and collected from the oil outlet pipe 14.

[0028] (II) Backwashing and Water Resource Recycling Stage Start the backwashing system: When the resistance of the filtration system increases or when regular maintenance is required, start the backwashing procedure. First, turn on the electric push rod 11 to drive the backwashing assembly 2, which consists of the diversion pipe 21 and the flushing nozzle 22, to reciprocate up and down within the filter tank 1.

[0029] Backwashing: While the backwashing assembly 2 is in motion, the water supply assembly 5 is activated. The water pump 51 draws clean water from the bottom of the water storage tank 3 through the water supply pipe 52 (hose) and pumps it into the diversion pipe 21 via the water supply hose, finally spraying it out at high speed from the nozzle of the flushing spray pipe 22. The flushing water flow direction is opposite to the tung oil flow direction during filtration, which can efficiently peel off and wash away the pollutants deeply attached to each stage of the V-shaped filter plates.

[0030] Wastewater purification and recycling: The contaminated wastewater generated during backwashing flows into the water storage tank 3 below through the backwash water return valve 15 at the bottom of the filter tank 1. The wastewater first flows through the microporous filter drawer 4, where solid pollutants are intercepted and purified, while the clean water seeps to the bottom of the tank for storage. This purified water can be used as the water source for the next backwash, thus forming a closed-loop water circulation system, significantly saving water resources and reducing wastewater discharge. After rinsing is completed, the backwash water return valve 15 is closed, and the purification and filtration of tung oil can continue.

[0031] Meanwhile, if the present invention discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by casting) (except where it is obviously impossible to use an integral forming process).

[0032] Furthermore, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model include states or shapes that are similar to, analogous to, or close to those states or shapes. Any component provided by this utility model can be assembled from multiple individual components or can be a single component manufactured using a one-piece molding process.

[0033] The above embodiments are merely illustrative examples to clearly illustrate the present invention, and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A multi-stage filtration and purification integrated device for tung oil, comprising a filtration tank (1), characterized in that: The filter tank (1) is provided with a primary filter plate (7), a microporous filter plate (8) and an activated carbon filter plate (9) in sequence along the direction of tung oil flow. The filter tank (1) is also provided with a backwashing assembly (2) for rinsing each filter plate. The backwashing assembly (2) includes a rinsing nozzle (22) corresponding to the back of each filter plate and a driving component that drives the rinsing nozzle (22) to move up and down. The rinsing nozzle (22) is provided with a plurality of rinsing nozzles (12) aligned with the corresponding filter plates.

2. The integrated multi-stage filtration and purification device for tung oil according to claim 1, characterized in that: A water storage tank (3) is provided below the filter pool (1). A flushing water return valve (15) connected to the water storage tank (3) is provided at the bottom of the filter pool (1). A microporous filter drawer (4) is provided inside the water storage tank (3). A microporous filter screen is provided inside the microporous filter drawer (4). The flushing spray pipe (22) is connected to the water storage tank through a water supply pipe (52). A water pump (51) is provided on the water supply pipe (52).

3. The integrated multi-stage filtration and purification device for tung oil according to claim 1 or 2, characterized in that: The filter plate is a corrugated filter plate.

4. The integrated multi-stage filtration and purification device for tung oil according to claim 1 or 2, characterized in that: The filter tank (1) is provided with a fixed frame (10) at the top. The driving component is an electric push rod (11) fixedly installed on the fixed frame (10). Each of the flushing nozzles (22) is connected to the electric push rod (11).

5. The integrated multi-stage filtration and purification device for tung oil according to claim 1 or 2, characterized in that: The filter tank (1) has an oil inlet pipe (13) at the top of one side and an oil outlet pipe (14) at the bottom of the other side.

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