Filter cloth cleaning device of vertical leaf filter

Abstract

The utility model relates to the technical field of leaf filters, and provides a filter cloth cleaning device of a vertical leaf filter, which comprises a filter cartridge, the filter cartridge is provided with a filter cavity, a plurality of filter cloths are arranged, a gap is arranged between two adjacent filter cloths, a spray pipe group is provided with spray holes, the spray holes face the filter cloths, a cleaning liquid inlet pipe leads to the spray pipe group, and a cleaning liquid outlet pipe leads to the spray pipe group. The cleaning liquid inlet pipe is provided with a water inlet branch pipe and an alkali inlet branch pipe. Through the technical scheme, the technical problem that the filter cloth is inconvenient to clean in the prior art is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of leaf filter technology, and more specifically, to a filter cloth cleaning device for a vertical leaf filter. Background Technology

[0002] Vertical leaf filters are a key piece of equipment in the alumina refining process, primarily playing a filtration role in the red mud sedimentation and separation and mother liquor suspended solids (aluminum hydroxide) recovery processes. The coarse alumina liquor is filtered through the filter cloth, forming the refined alumina liquor for the next process and a filter cake containing filter residue. Due to the complex composition of natural bauxite, impurities such as oxalates can severely affect the purity and quality of the refined alumina product. Therefore, oxalate filtration is crucial for improving product quality. Oxalate filter residue accumulates on the filter cloth, forming a thick filter cake, increasing filtration resistance and reducing filtration efficiency. Therefore, regular regeneration and alkaline washing of the filter cloth are necessary. Currently, the commonly used alkaline washing process involves soaking the filter cloth in a heated sodium hydroxide solution and rinsing it with a high-pressure water gun to remove residual alkali. However, due to the viscous composition of the filter cake and the inability of the high-pressure water gun to achieve complete cleaning coverage, problems arise such as uneven and incomplete cleaning, excessive alkali residue, damage to the filter cloth structure, and shortened service life. Increased filtration resistance directly affects subsequent filtration efficiency. Therefore, current processes use lime slurry added to sodium aluminate solution to generate calcium aluminate filter aid, forming a porous filter skeleton structure with tree holes on the surface of the leaf filter cloth. This reduces the filtration resistance of coarse liquid and makes it easier for the red mud slurry adsorbed on the leaf filter cloth to detach, facilitating sludge unloading. However, the preparation of filter aids currently often involves mixing lime slurry with coarse or refined liquid, resulting in alumina loss in both the coarse and refined liquids. Furthermore, lime can be under-burned or over-burned during the calcination process, leading to a large amount of coarse sand impurities in the lime slurry, which can easily cause pipe blockage. During sludge unloading, refined liquid is required for rinsing, and this refined liquid is returned to the dissolution tank or separation settling tank along with the filter cake, increasing the process load and wasting resources.

[0003] Furthermore, traditional filter cloth cleaning devices also pose safety risks. Using corrosive cleaning solutions (such as alkaline solutions) could harm operators during the cleaning process. Moreover, if the equipment is not cleaned promptly after cleaning, residual cleaning solution could corrode other components, shortening the equipment's lifespan.

[0004] With the continuous development of modern industry, the requirements for filter cloth cleaning devices for vertical leaf filters are becoming increasingly stringent. Traditional cleaning devices can no longer meet these needs, and there is an urgent need for a new type of filter cloth cleaning device to improve cleaning efficiency, optimize space utilization, enable flexible selection and control of cleaning fluid, and ensure the safety of operators. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a filter cloth cleaning device for a vertical leaf filter, which solves the technical problem of inconvenient filter cloth cleaning in the prior art.

[0006] According to one aspect, at least one embodiment of this disclosure provides a filter cloth cleaning device for a vertical leaf filter, comprising:

[0007] Filter cartridge, the filter cartridge having a filter cavity;

[0008] The filter cloth is a plurality of filter cloths, with a gap between two adjacent filter cloths;

[0009] A spray pipe assembly having spray holes facing the filter cloth;

[0010] A cleaning fluid inlet pipe is provided, which leads to the spray pipe assembly. The cleaning fluid inlet pipe has a water inlet branch pipe and an alkali inlet branch pipe.

[0011] For example, in at least one embodiment of this disclosure, a filter cloth cleaning device for a vertical leaf filter is provided, wherein the spray pipe assembly includes:

[0012] A first spray pipe, a second spray pipe, and a third spray pipe are arranged sequentially from top to bottom within the gap. Each of the first spray pipe, the second spray pipe, and the third spray pipe has a spray hole facing the filter cloth.

[0013] The cleaning fluid inlet pipe simultaneously connects to the first spray pipe, the second spray pipe, and the third spray pipe.

[0014] For example, in at least one embodiment of the filter cloth cleaning device for a vertical leaf filter provided in this disclosure, the ratio of the number of spray holes on the first spray pipe, the second spray pipe and the third spray pipe is 1:(1.5~1.6):(3.2~3.3).

[0015] For example, at least one embodiment of this disclosure provides a filter cloth cleaning device for a vertical leaf filter, the filter cloth cleaning device further comprising:

[0016] A flow regulating valve, wherein there are several flow regulating valves, and the several flow regulating valves are respectively installed on the first spray pipe, the second spray pipe and the third spray pipe, for communicating the cleaning fluid inlet pipe with the first spray pipe, the second spray pipe and the third spray pipe;

[0017] A pressure boosting nozzle is disposed on the spray hole.

[0018] For example, in at least one embodiment of the present disclosure, the filter cloth cleaning device for a vertical leaf filter has a fan-shaped spray surface from the pressurized nozzle.

[0019] For example, at least one embodiment of the present disclosure provides a filter cloth cleaning device for a vertical leaf filter, wherein the filter chamber wall has a liquid inlet, a liquid outlet, and a slag outlet, and the filter cloth cleaning device further includes:

[0020] coarse liquid tank;

[0021] The inlet pipe is used to connect the coarse liquid tank and the inlet.

[0022] A high-level tank, with the liquid outlet leading to the high-level tank;

[0023] A semen tank, wherein the elevated tank leads to the semen tank;

[0024] A filter cake trough, wherein the slag outlet leads to the filter cake trough;

[0025] A horizontal tube, one end of which is located inside the filter chamber, and the other end which leads to the coarse liquid tank;

[0026] A circulation pipe, which is used to connect the outlet to the coarse liquid tank;

[0027] A buffer element, wherein the filter cake trough leads to the buffer element;

[0028] A balance tube, one end of which extends into the filter cavity and is located above the horizontal tube, and the other end is connected to the buffer.

[0029] For example, at least one embodiment of this disclosure provides a filter cloth cleaning device for a vertical leaf filter, the filter cloth cleaning device further comprising:

[0030] A circulation valve is disposed on the side of the circulation pipe near the liquid outlet.

[0031] A feed valve is provided at the liquid inlet;

[0032] A sludge discharge valve is located on one side of the slag outlet;

[0033] A pressure relief valve is installed on the balance pipe;

[0034] A horizontal valve is provided on the horizontal pipe.

[0035] For example, the filter cloth cleaning device for a vertical leaf filter provided in at least one embodiment of this disclosure has a high-level tank with a high-level cavity, a partition at the bottom of the high-level cavity, an overflow channel between the partition and the top of the high-level tank, a high-level inlet and a high-level outlet on both sides of the partition, the liquid outlet leading to the high-level inlet, and the high-level outlet leading to the semen tank.

[0036] For example, at least one embodiment of the present disclosure provides a filter cloth cleaning device for a vertical leaf filter, wherein the filter chamber has a vacuum port and a discharge port, and the filter cloth cleaning device further includes:

[0037] Alkali solution tank, the alkali solution tank being connected to the alkali inlet branch pipe;

[0038] Hot water tank, the hot water tank being connected to the water inlet branch pipe;

[0039] Vacuum device, wherein the vacuum port leads to the vacuum device;

[0040] A liquid collection tank, with the discharge port leading to the liquid collection tank.

[0041] For example, at least one embodiment of this disclosure provides a filter cloth cleaning device for a vertical leaf filter, the filter cloth cleaning device further comprising:

[0042] The enrichment tank has a discharge port leading to it, and the enrichment tank has a slurry outlet and a return port. The return port leads to the coarse liquid tank, and the slurry outlet leads to the filter cake tank.

[0043] The beneficial effects of the embodiments disclosed herein are as follows:

[0044] In this disclosure, the spray pipe is placed within the gap between adjacent filter cloths, making full use of the equipment's spatial structure. This design not only saves space but also allows the cleaning fluid to be sprayed more directly and efficiently onto the filter cloth surface. In actual operation, compared to designs that place the spray pipe in other locations on the filter cartridge, the path for the cleaning fluid to reach the filter cloth is shortened, reducing fluid loss and energy loss during transmission, improving the utilization efficiency of the cleaning fluid, and thus enhancing the cleaning effect.

[0045] The cleaning solution inlet pipe has water inlet branch pipes and alkali inlet branch pipes, which can supply different cleaning solutions such as water and alkali solution respectively. For stains of different properties, appropriate cleaning solutions can be selected for targeted cleaning. Since the first, second, and third spray pipes are all connected to the cleaning solution inlet pipe, independent control is possible. During actual cleaning, depending on the degree of soiling in different parts of the filter cloth, certain spray pipes can be opened or closed selectively by setting appropriate valves or control devices. Simultaneously, water and alkali solution can be introduced into the spray pipes, ensuring that after alkali soaking, the filter chamber can be cleaned with water, avoiding alkali burns to operators. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0047] Figure 1 This is a schematic diagram of the system structure according to an embodiment of the present disclosure;

[0048] In the diagram: Filter cartridge-1, Filter chamber-101, Liquid inlet-102, Liquid outlet-103, Slag outlet-104, Vacuum port-105, Discharge port-106, Filter cloth-2, Gap-201, First spray pipe-3, Second spray pipe-4, Third spray pipe-5, Cleaning liquid inlet pipe-6, Water inlet branch pipe-601, Alkali inlet branch pipe-602, Flow regulating valve-7, Pressure boosting nozzle-8, Coarse liquid tank-9, Liquid inlet pipe-10, High-level tank-11, High-level cavity-1101, Baffle-1 102, Overflow channel - 1103, High-level inlet - 1104, High-level outlet - 1105, Fine liquid tank - 12, Filter cake tank - 13, Horizontal pipe - 14, Circulation pipe - 15, Buffer device - 16, Balance pipe - 17, Circulation valve - 18, Feed valve - 19, Sludge discharge valve - 20, Pressure relief valve - 21, Horizontal valve - 22, Alkali tank - 23, Hot water tank - 24, Vacuum device - 25, Collection tank - 26, Enrichment tank - 27, Sludge outlet - 2701, Return port - 2702. Detailed Implementation

[0049] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0050] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0051] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0052] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this disclosure.

[0054] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0055] like Figure 1 As shown, it illustrates a filter cloth cleaning device for a vertical leaf filter according to an embodiment of the present disclosure, including a filter cylinder 1, the filter cylinder 1 having a filter chamber 101, a plurality of filter cloths 2, a gap 201 between two adjacent filter cloths 2, a spray pipe assembly having spray holes facing the filter cloths 2, a cleaning liquid inlet pipe leading to the spray pipe assembly, and the cleaning liquid inlet pipe 6 having a water inlet branch pipe 601 and an alkali inlet branch pipe 602.

[0056] For example, such as Figure 1 As shown, the spray pipe assembly is placed within the gap 201 between adjacent filter cloths 2, making full use of the equipment's spatial structure. This design not only saves space but also allows the cleaning fluid to be sprayed more directly and efficiently onto the surface of the filter cloth 2. In actual operation, compared to designs where the spray pipes are placed in other positions on the filter cartridge, the path for the cleaning fluid to reach the filter cloth 2 is shortened, reducing fluid loss and energy loss during transmission, improving the utilization efficiency of the cleaning fluid, and thus enhancing the cleaning effect.

[0057] The cleaning fluid inlet pipe 6 has a water inlet branch pipe 601 and an alkali inlet branch pipe 602, which can supply different cleaning fluids such as water and alkali solution respectively. For stains of different properties, a suitable cleaning fluid can be selected for targeted cleaning. Since the first spray pipe 3, the second spray pipe 4, and the third spray pipe 5 are all connected to the cleaning fluid inlet pipe 6, it provides a basis for independent control. During the actual cleaning process, according to the degree of dirt on different parts of the filter cloth 2, certain spray pipes can be opened or closed selectively by setting corresponding valves or control devices. At the same time, water and alkali solution can be introduced into the spray pipes to ensure that after alkali soaking, the filter chamber can be cleaned by water, avoiding alkali burns to operators.

[0058] In some examples, the sprinkler assembly includes:

[0059] For example, such as Figure 1 As shown, the first spray pipe 3, the second spray pipe 4, and the third spray pipe 5 are arranged sequentially from top to bottom within the gap 201. Each of the first spray pipe 3, the second spray pipe 4, and the third spray pipe 5 has a spray hole facing the filter cloth 2. The washing liquid inlet pipe 6 simultaneously leads to the first spray pipe 3, the second spray pipe 4, and the third spray pipe 5.

[0060] The first spray pipe 3, the second spray pipe 4, and the third spray pipe 5 are arranged sequentially from top to bottom within the gap 201 between adjacent filter cloths 2, with all spray holes facing the filter cloth 2. This arrangement ensures that the upper, middle, and lower parts of the filter cloth 2 can be sprayed, achieving multi-angle spraying. Traditional single-spray pipe designs have low cleaning coverage of the filter cloth 2, while this multi-spray pipe layout improves the cleaning coverage, ensuring that all areas of the filter cloth 2 surface can come into contact with the cleaning liquid, effectively removing impurities and residual filter residue attached to the filter cloth 2.

[0061] In some examples, the ratio of the number of spray holes on the first spray pipe 3, the second spray pipe 4, and the third spray pipe 5 is 1:1.5~1.6:3.2~3.3.

[0062] For example, such as Figure 1 As shown, the ratio of the number of spray holes from top to bottom is 1:1.5~1.6:3.2~3.3. This ratio is more suitable for production situations where red mud is the main impurity in the crude liquid during aluminum production.

[0063] In some examples, the filter cloth 2 cleaning device also includes a flow regulating valve 7, which is a plurality of valves. The plurality of flow regulating valves 7 are respectively installed on the first spray pipe 3, the second spray pipe 4 and the third spray pipe 5 for connecting the cleaning liquid inlet pipe 6 with the first spray pipe 3, the second spray pipe 4 and the third spray pipe 5. The pressurizing nozzle 8 is installed on the spray hole.

[0064] For example, such as Figure 1 As shown, flow regulating valves 7 are respectively installed on the first spray pipe 3, the second spray pipe 4, and the third spray pipe 5, enabling precise control of the cleaning fluid flow rate in each spray pipe. The degree of soiling on the filter cloth 2 may vary at different locations; by adjusting the flow rate, the cleaning fluid can be evenly distributed on the filter cloth 2, achieving comprehensive and efficient cleaning. Pressure boosting nozzles 8 are installed on the spray holes, increasing the spray pressure and speed of the cleaning fluid. High-pressure sprayed cleaning fluid can more effectively impact impurities on the surface of the filter cloth 2, removing stubborn particles and dirt. The flow regulating valves 7 allow the cleaning device to be flexibly adjusted according to different working conditions and the soiling level of the filter cloth 2. After filtering different materials, the flow rate of each spray pipe can be quickly changed according to the actual situation, precisely controlling the cleaning fluid flow rate according to actual cleaning needs, avoiding unnecessary waste of cleaning fluid. Compared with traditional fixed-flow cleaning methods, this saves cleaning fluid. At the same time, because the cleaning fluid can be more accurately distributed, over-cleaning is reduced, lowering energy consumption.

[0065] The booster nozzle 8 concentrates limited energy on the sprayed cleaning fluid, improving energy utilization efficiency. Compared to ordinary nozzles, under the same pressure, the booster nozzle 8 can generate higher spray speed and impact force, thus reducing the pressure requirement of the cleaning fluid and the energy consumption of the booster equipment while achieving the same cleaning effect. Although the booster nozzle 8 enhances the cleaning power, excessive impact and damage to the filter cloth 2 can be avoided by properly adjusting the flow rate and pressure. Compared to traditional high-pressure cleaning methods, the combination of the flow regulating valve 7 and the booster nozzle 8 allows for more precise control of the cleaning process, reducing wear and damage to the filter cloth 2.

[0066] In some examples, the water spray surface of the booster nozzle 8 is a fan-shaped surface.

[0067] For example, such as Figure 1As shown, the fan-shaped spray surface allows the cleaning fluid sprayed from the pressurized nozzle 8 to form a wider coverage area on the filter cloth 2 surface. Compared to traditional circular spray nozzles, the fan-shaped nozzle can cover a larger area of ​​the filter cloth 2 in a single spray. Under the same spray distance and pressure, the coverage width of a circular spray nozzle may only be 10 cm, while the coverage width of a fan-shaped nozzle can reach 30 cm or even wider. This means that when cleaning the filter cloth 2, using a fan-shaped nozzle can reduce the number of nozzles required, while ensuring that more areas of the filter cloth 2 can come into contact with the cleaning fluid in a timely manner, thereby effectively improving the cleaning effect on impurities on the filter cloth 2 and more comprehensively removing dirt and residues from the surface of the filter cloth 2. Due to the wide coverage of the fan-shaped spray surface, the time required to complete the cleaning of the entire surface of the filter cloth 2 is significantly reduced. For industrial production that requires frequent cleaning of the filter cloth 2 to ensure filtration effect, this can significantly reduce equipment downtime and improve production efficiency.

[0068] The fan-shaped spray surface allows the cleaning solution to be distributed more evenly on the surface of filter cloth 2. Its fan shape avoids the problems that can occur with a circular spray surface, such as excessively high cleaning solution concentration in the central area and insufficient coverage at the edges. During the cleaning process, all parts of filter cloth 2 receive a relatively uniform flow rate and pressure of cleaning solution, thus ensuring consistent cleaning results.

[0069] In some examples, the filter chamber 101 has an inlet 102, an outlet 103, and a slag outlet 104 on its wall. The filter cloth cleaning device also includes a coarse liquid tank 9, an inlet pipe 10 for connecting the coarse liquid tank 9 with the inlet 102, an outlet 103 leading to a high-level tank 11, a high-level tank 11 leading to a fine liquid tank 12, a slag outlet 104 leading to a filter cake tank 13, a horizontal pipe 14 with one end located inside the filter chamber 101 and the other end leading to the coarse liquid tank 9, a circulation pipe 15 for connecting the outlet 103 with the coarse liquid tank 9, a filter cake tank 13 leading to a buffer 16, and a balance pipe 17 with one end extending into the filter chamber 101 and located above the horizontal pipe 14, and the other end connected to the buffer 16.

[0070] For example, such as Figure 1 As shown, the inlet pipe 10 connects the coarse liquid tank 9 and the inlet port 102, providing the coarse liquid to be filtered into the filter chamber 101, allowing the coarse liquid to smoothly enter the filtration area. The outlet port 103 leads to the high-level tank 11, and then from the high-level tank 11 to the semen tank 12. This design utilizes the liquid level difference to achieve the natural flow of the filtered semen, eliminating the need for additional power equipment to lift the semen and saving energy consumption. At the same time, the stable outlet path ensures that the filtered semen can be collected and transported efficiently, improving filtration efficiency.

[0071] The slag outlet 104 leads to the filter cake tank 13, allowing the filter cake generated during the filtration process to be discharged from the filter chamber 101 in a timely manner. The filter cake tank 13 leads to the buffer element 16, which acts as a pressure buffer and regulator to prevent excessive air pressure in the filter chamber 101 from affecting normal material discharge. This design optimizes the filter cake processing flow and ensures the continuous and stable operation of the filtration system.

[0072] The circulation pipe 15 connects the outlet 103 to the coarse liquid tank 9, allowing the filtered liquid to circulate back to the coarse liquid tank 9, gradually increasing the clarity of the liquid within it. This circulation design helps maintain stable pressure within the filter chamber 101, preventing pressure fluctuations from affecting the filtration effect. Simultaneously, the circulating liquid filters all the coarse liquid in the coarse liquid tank 9, gradually reducing impurities and ensuring that the filter cake in the filter chamber 101 does not excessively settle when semen is produced. When semen is produced, the circulation pipe 15 is cut off, and the semen enters the semen tank 12.

[0073] One end of the balancing pipe 17 extends into the filter chamber 101 and is located above the horizontal pipe 14, while the other end is connected to the buffer component 16. It can balance the pressure inside and outside the filter chamber 101, preventing liquid backflow or poor filtration caused by pressure imbalance. During the drainage process, when the pressure inside the filter chamber 101 changes, the balancing pipe 17 can adjust the pressure in time to ensure the stable operation of the filtration process.

[0074] In some examples, the filter cloth cleaning device also includes a circulation valve 18, which is located on the side of the circulation pipe 15 near the liquid outlet 103; a feed valve 19 is located at the liquid inlet 102; a sludge discharge valve 20 is located on the side of the slag outlet 104; a pressure relief valve 21 is located on the balance pipe 17; and a horizontal valve 22 is located on the horizontal pipe 14.

[0075] For example, such as Figure 1 As shown, the circulation valve 18 is located on the side of the circulation pipe 15 near the outlet 103. By adjusting the opening of the circulation valve 18, the flow rate of liquid returning from the outlet 103 to the coarse liquid tank 9 can be precisely controlled. In the initial stage of filtration, when there are many impurities in the coarse liquid, the opening of the circulation valve 18 is maintained to ensure the circulation flow rate and prevent the filtered semen from directly entering the high-level tank 11. In the later stage of filtration, when the impurities in the coarse liquid decrease, the circulation valve is closed, and the semen enters the high-level tank 11 for secondary filtration.

[0076] The sludge discharge valve 20 is located on one side of the slag outlet 104. It can be opened in a timely manner according to the accumulation of filter cake and the filtration process, discharging the filter cake from the filter chamber 101 to the filter cake trough 13. Timely discharge of filter cake prevents excessive accumulation in the filter chamber 101, increasing filtration resistance and affecting filtration efficiency and quality. Simultaneously, it avoids excessive compression and wear of the filter cloth 2 by the filter cake, extending its service life. The pressure relief valve 21 is located on the balance pipe 17, and its function is to balance the pressure between the filter chamber 101 and the buffer component 16, ensuring smooth discharge.

[0077] In some examples, the high-level tank 11 has a high-level cavity 1101, the bottom of the high-level cavity 1101 has a partition 1102, an overflow channel 1103 is formed between the partition 1102 and the top of the high-level tank 11, the partition 1102 has a high-level inlet 1104 and a high-level outlet 1105 on both sides respectively, the outlet 103 leads to the high-level inlet 1104, and the high-level outlet 1105 leads to the semen tank 12.

[0078] For example, such as Figure 1 As shown, a baffle 1102 is installed at the bottom of the high-level chamber 1101 of the high-level tank 11, forming an overflow channel 1103 between the baffle and the top of the high-level tank. When the outlet 103 delivers the filtered liquid to the high-level inlet 1104, the liquid first accumulates in the chamber on one side of the baffle 1102. As the liquid continues to flow in, when the liquid level rises to a certain height, exceeding the top of the baffle 1102, the liquid overflows through the overflow channel 1103 to the other side of the baffle 1102, and then flows from the high-level outlet 1105 to the semen tank 12. This design allows the liquid level in the high-level chamber 1101 to be maintained at a relatively stable height, avoiding the impact of excessively high or low liquid levels on subsequent filtration and delivery processes. The baffle 1102 ensures that the liquid entering the high-level inlet 1104 has a certain residence time in the chamber on one side of the baffle 1102. During this period, some heavier impurity particles in the liquid will settle to the bottom of the chamber under gravity, thus achieving initial separation of impurities from semen. Only semen that has settled for a certain period and whose liquid level has risen to the overflow height will enter the other side of the partition through the overflow channel 1103 and then flow to the semen tank 12. This can effectively reduce the impurity content entering the semen tank 12 and improve the purity and quality of the semen.

[0079] In some examples, the filter chamber 101 has a vacuum port 105 and a discharge port 106. The filter cloth cleaning device also includes an alkali tank 23, which leads to an alkali inlet branch pipe 602, a hot water tank 24 which leads to a water inlet branch pipe 601, a vacuum port 105 which leads to a vacuum device 25, and a discharge port 106 which leads to a collection tank 26.

[0080] For example, such as Figure 1As shown, the alkali tank 23 is connected to the alkali inlet branch pipe 602, which can stably and accurately provide alkali to the cleaning system. When cleaning the scaled filter cloth, the concentration and flow rate of the alkali can be adjusted according to actual needs. When the filter cloth is severely scaled, a high-concentration alkali can be output from the alkali tank 23, and the alkali spray volume can be increased by adjusting the flow regulating valve 7, effectively dissolving oxides and oxalate particles on the surface of the filter cloth. The hot water tank 24 is connected to the water inlet branch pipe 601, providing 95°C hot water for rinsing the filter cloth. The hot water can quickly dissolve residual alkali after alkali washing, and with the assistance of vacuum filtration, further remove impurities and alkali residue from the filter cloth pores, ensuring the cleaning effect and achieving a state where the filter cloth 2 is thoroughly cleaned and free of alkali residue.

[0081] The alkaline solution tank and hot water tank supply different cleaning media respectively. Combined with the first spray pipe 3, the second spray pipe 4, and the third spray pipe 5, a synergistic cleaning process of alkaline washing and water washing is achieved. Alkaline washing softens the scale on the filter cloth 2, while water washing further cleans it. This combination improves cleaning efficiency and quality. 2. Optimized impurity and residual liquid treatment.

[0082] Vacuum port 105 connects to vacuum device 25. After water washing, the vacuum system's negative pressure comes into play. On one hand, it accelerates the rinsing effect of hot water on filter cloth 2, allowing the hot water to penetrate the filter cloth 2 more quickly and remove impurities such as oxalate particles from the pores of the filter cloth 2. On the other hand, the vacuum negative pressure can effectively remove residual alkali from the filter cloth 2, preventing alkali residue from contaminating subsequent filtered products. In actual production, after using vacuum device 25 to assist in cleaning, the amount of residual impurities in filter cloth 2 is reduced, ensuring the purity of the filtered products.

[0083] The discharge port 106 leads to the collection tank 26. After the cleaning process, the mixture of alkaline solution and hot water can be smoothly discharged into the collection tank 26 through the discharge port 106. The collection tank 26 can collect these mixtures for subsequent unified treatment. This not only avoids the pollution caused by the random discharge of the mixture, but also allows for the recovery and reuse of useful components in the mixture, improving resource utilization.

[0084] The alkali tank 23 and hot water tank 24 provide a continuous and stable supply of cleaning solution for the cleaning process, ensuring that the entire cleaning process will not be interrupted due to insufficient or unstable supply of cleaning solution. The vacuum device 25 provides a stable vacuum negative pressure, ensuring consistent removal of impurities and residual liquid. The connection between the discharge port 106 and the collection tank 26 allows the waste liquid after cleaning to be discharged in a timely manner, maintaining a clean environment within the filter chamber 101 and preventing residual waste liquid from causing corrosion or other adverse effects on the equipment. This improves the operational stability and reliability of the equipment and reduces the equipment failure rate.

[0085] In some examples, the filter cloth cleaning device also includes an enrichment tank 27, with a discharge port 106 leading to the enrichment tank 27. The enrichment tank 27 has a slurry outlet 2701 and a return port 2702, with the return port 2702 leading to the coarse liquid tank 9 and the slurry outlet 2701 leading to the filter cake tank 13.

[0086] For example, such as Figure 1 As shown, the discharge port 106 leads to the enrichment tank 27, allowing the alkaline solution and hot water mixture after washing the filter cloth 2, as well as impurities generated during the filtration process, to concentrate in the enrichment tank 27. Inside the enrichment tank 27, due to gravity and fluid characteristics, impurities in the mixture, such as slurry and solid particles, gradually settle and accumulate. The slurry outlet 2701 of the enrichment tank 27 leads to the filter cake tank 13, allowing the settled slurry and other impurities to be discharged promptly, achieving effective separation of impurities. This design prevents impurities from accumulating in the filter chamber 101 or other parts, ensuring the smooth operation of the filtration system.

[0087] The enrichment tank 27 effectively separates impurities, reducing the likelihood of impurities re-adhering to the filter cloth 2 and lowering the risk of filter cloth 2 clogging. Clogging of the filter cloth 2 leads to increased filtration resistance and reduced filtration efficiency, while the presence of the enrichment tank 27 solves this problem at its source.

[0088] The return port 2702 leads to the coarse liquid tank 9, allowing the liquid that has undergone preliminary impurity separation in the enrichment tank 27 to flow back to the coarse liquid tank 9 and participate in the filtration process again. This returned liquid may still contain some useful components that were not completely filtered out; recirculation improves the utilization rate of raw materials and reduces waste. Moreover, the recycling of the returned liquid helps maintain the liquid flow state within the filter chamber 101, promoting the filtration process. For example, in some continuous filtration production processes, the returned liquid is utilized effectively.

[0089] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A filter cloth cleaning device for a vertical leaf filter, characterized in that, include: Filter cartridge (1), the filter cartridge (1) having a filter cavity (101); Filter cloth (2), there are several filter cloths (2), and there is a gap (201) between two adjacent filter cloths (2); A spray pipe assembly having spray holes facing the filter cloth (2). The cleaning fluid inlet pipe (6) leads to the spray pipe assembly. The cleaning fluid inlet pipe (6) has a water inlet branch pipe (601) and an alkali inlet branch pipe (602).

2. The filter cloth cleaning device for a vertical leaf filter according to claim 1, characterized in that, The spray pipe assembly includes: The first spray pipe (3), the second spray pipe (4), and the third spray pipe (5) are arranged in the gap (201) from top to bottom. The first spray pipe (3), the second spray pipe (4), and the third spray pipe (5) all have spray holes facing the filter cloth (2). The cleaning fluid inlet pipe (6) is simultaneously connected to the first spray pipe (3), the second spray pipe (4) and the third spray pipe (5).

3. The filter cloth cleaning device for a vertical leaf filter according to claim 2, characterized in that, The ratio of the number of spray holes on the first spray pipe (3), the second spray pipe (4) and the third spray pipe (5) is 1:(1.5~1.6):(3.2~3.3).

4. The filter cloth cleaning device for a vertical leaf filter according to claim 2, characterized in that, The filter cloth cleaning device also includes: A flow regulating valve (7) is provided, and several flow regulating valves (7) are respectively provided on the first spray pipe (3), the second spray pipe (4) and the third spray pipe (5) for connecting the cleaning liquid inlet pipe (6) with the first spray pipe (3), the second spray pipe (4) and the third spray pipe (5); A pressure-boosting nozzle (8) is disposed on the spray hole.

5. The filter cloth cleaning device for a vertical leaf filter according to claim 4, characterized in that, The water spray surface of the pressurizing nozzle (8) is a fan-shaped surface.

6. The filter cloth cleaning device for a vertical leaf filter according to claim 1, characterized in that, The filter chamber (101) has an inlet (102), an outlet (103), and a slag outlet (104) on its wall. The filter cloth cleaning device further includes: Coarse liquid tank (9); Inlet pipe (10), the inlet pipe (10) is used to connect the coarse liquid tank (9) and the inlet (102); The high-level tank (11) has the outlet (103) leading to it. Semen tank (12), the high-level tank (11) leads to the semen tank (12); Filter cake trough (13), the slag outlet (104) leads to the filter cake trough (13); A horizontal tube (14) is located at one end in the filter chamber (101) and at the other end in the coarse liquid tank (9). A circulation pipe (15) is used to connect the outlet (103) with the coarse liquid tank (9); Buffer (16), the cake filter trough (13) leads to the buffer (16); Balance tube (17), one end of which extends into the filter cavity (101) and is located above the horizontal tube (14), and the other end is connected to the buffer (16).

7. The filter cloth cleaning device for a vertical leaf filter according to claim 6, characterized in that, The filter cloth cleaning device also includes: A circulation valve (18) is provided on the side of the circulation pipe (15) near the outlet (103); Feed valve (19), the feed valve (19) is located at the liquid inlet (102); A mud discharge valve (20) is provided on one side of the slag outlet (104); Pressure relief valve (21), the pressure relief valve (21) is provided on the balance pipe (17); A horizontal valve (22) is provided on the horizontal pipe (14).

8. The filter cloth cleaning device for a vertical leaf filter according to claim 6, characterized in that, The high-level tank (11) has a high-level cavity (1101), and a partition (1102) is provided at the bottom of the high-level cavity (1101). An overflow channel (1103) is formed between the partition (1102) and the top of the high-level tank (11). The partition (1102) has a high-level inlet (1104) and a high-level outlet (1105) on both sides respectively. The liquid outlet (103) leads to the high-level inlet (1104), and the high-level outlet (1105) leads to the semen tank (12).

9. The filter cloth cleaning device for a vertical leaf filter according to claim 6, characterized in that, The filter chamber (101) has a vacuum port (105) and a discharge port (106), and the filter cloth cleaning device further includes: Alkali tank (23), which leads to the alkali inlet branch pipe (602); Hot water tank (24), the hot water tank (24) leads to the water inlet branch pipe (601); Vacuum device (25), the vacuum port (105) leads to the vacuum device (25); The liquid collection tank (26) is connected to the discharge port (106).

10. The filter cloth cleaning device for a vertical leaf filter according to claim 9, characterized in that, The filter cloth cleaning device also includes: Enrichment tank (27), the discharge port (106) leads to the enrichment tank (27), the enrichment tank (27) has a mud outlet (2701) and a return port (2702), the return port (2702) leads to the coarse liquid tank (9), and the mud outlet (2701) leads to the filter cake tank (13).

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