Self-cleaning type ZS filter

Abstract

The utility model discloses a self-cleaning type ZS filter which comprises a filter tank body, a filter element supporting plate is fixed in the filter tank body, a plurality of vertically extending filter elements are fixed on the lower side of the filter element supporting plate, and a filter element cleaning mechanism is arranged in the filter tank body; the filter element cleaning mechanism comprises a filter element cleaning supporting plate which is slidably connected into the filter tank in the vertical direction and is horizontally arranged, a plurality of vertically-through cleaning containing holes are formed in the filter element cleaning supporting plate, and annular and hollow cleaning distribution rings are fixed into the cleaning containing holes. A plurality of cleaning nozzles communicated with the interior of the cleaning distribution ring are fixed on the upper and lower sides of the cleaning distribution ring; the filter element cleaning mechanism can lift and move to more thoroughly clean the outer surface of the filter element of the filter, and is more efficient compared with traditional top spraying cleaning, so that the stability of the quality of filtrate is guaranteed, residues of filter residues are reduced, and the service life of the filter element of the filter is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of catalytic oil slurry treatment technology, specifically a self-cleaning ZS filter. Background Technology

[0002] Candle filters are a relatively advanced, safe, efficient, and pollution-free new type of filtration. They are characterized by high efficiency and energy saving, high precision sealing, easy maintenance, safety and reliability, and a high degree of automation. They can be widely used in solid-liquid separation filtration in industries such as petroleum, plastics, electroplating, chemicals, ceramics, pharmaceuticals, and sugar refining.

[0003] Candle filtration has gradually replaced pressure filtration and bag filtration as the mainstream filtration method. The repeated use of the filter media saves a lot of filter consumables.

[0004] However, the candle filters currently used for treating catalytic slurry or catalytic slurry concentrate still have the problem of not being thorough enough in terms of slag removal, and the filter cake adhering to the surface of the filter cloth needs to be cleaned more thoroughly. Utility Model Content

[0005] The purpose of this invention is to provide a self-cleaning ZS filter that can more thoroughly remove the filter cake and ensure the stability of the filtrate quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A self-cleaning ZS filter includes a filter tank, a filter element support plate fixed inside the filter tank, multiple vertically extending filter elements fixed on the lower side of the filter element support plate, and a filter element cleaning mechanism provided inside the filter tank.

[0008] The filter element cleaning mechanism includes a filter element cleaning support plate that is slidably connected to the filter tank in the vertical direction and arranged horizontally. The filter element cleaning support plate has multiple vertically penetrating cleaning receiving holes. A ring-shaped and hollow cleaning distribution ring is fixed inside the cleaning receiving hole. Multiple cleaning nozzles that communicate with the inside of the cleaning distribution ring are fixed on both the upper and lower sides of the cleaning distribution ring.

[0009] A cleaning delivery pipe is fixed on the filter element cleaning support plate, and the cleaning delivery pipe is connected to each cleaning distribution ring through multiple cleaning delivery sub-pipes.

[0010] Preferably, a vertically penetrating spiral tube receiving cylinder is fixed on the filter element support plate, a spiral conveying pipe is provided inside the spiral tube receiving cylinder, a cleaning liquid input pipe is fixed on the top of the filter tank, the upper end of the spiral conveying pipe is connected to the cleaning liquid input pipe, and the lower end of the spiral conveying pipe is connected to the cleaning conveying pipe.

[0011] Note: The spiral conveying pipe can extend and retract over a wide range to accommodate the vertical movement of the entire filter element cleaning support plate.

[0012] Preferably, the inner wall of the filter tank is fixed with a plurality of vertically extending cleaning lifting support slide rails, and cleaning lifting support sliders are slidably connected to the cleaning lifting support slide rails.

[0013] Instructions: Use the cleaning lifting support slider to move the entire filter element cleaning support plate together to thoroughly clean the outer surface of the filter cloth in the vertical direction.

[0014] Preferably, the filter element includes a vertically extending filter element outlet pipe, and multiple vertically extending filter element through pipes are provided around the filter element outlet pipe. The top of the multiple filter element through pipes is fixed together with a top support plate, and the bottom of the multiple filter element through pipes is fixed together with a bottom support plate.

[0015] A vertically extending, cylindrical filter cloth is fixed between the top support plate and the bottom support plate, and the filter cloth surrounds multiple filter cartridge liquid passage tubes.

[0016] The upper end of the filter cartridge's outlet pipe is fixed to the top support plate.

[0017] A filter element support plate is fixed to the upper side of the filter outlet pipe, and the upper end of the filter element outlet pipe is connected and fixed to the filter outlet pipe.

[0018] A filter outlet collection pipe connected to the filter outlet connecting pipe is fixed on the outside of the filter tank, and a clear liquid storage tank is provided connected to the filter outlet collection pipe.

[0019] The filtrate collection pipe is equipped with a filtration delivery pump.

[0020] Note: Multi-tube supported filter cartridges have better stability, allowing the filter cloth to adhere tightly to the outer periphery of the filter cartridge's liquid passage during filtration. This results in a wavy, wrinkled cross-section of the filter cloth, facilitating the formation of a stable and uniform filter cake. Furthermore, it allows the filter cake to break up and detach more easily from the outer surface of the filter cloth during subsequent backflushing.

[0021] Preferably, the lower side of the filter tank is provided with an annular and hollow reflux distribution ring, which is connected to the inside of the filter tank through multiple short reflux pipes;

[0022] The reflux distribution ring and the filter outlet collection pipe are connected by a reflux delivery pipe, which is equipped with a reflux delivery pump.

[0023] Explanation: By using reflux circulation, the original liquid is filtered more thoroughly, and a uniform filter cake is formed on the outer surface of the filter cloth.

[0024] Preferably, multiple vertically extending triangular prisms are rotatably connected between the top support plate and the bottom support plate, and the side edges of the triangular prisms are rounded.

[0025] Multiple triangular prisms are located inside the filter cloth.

[0026] Explanation: The squeezing action between the triangular prism and the filter cloth can better break up the filter cake on the outer surface of the filter cloth.

[0027] Compared with the prior art, the beneficial effects of this utility model are reflected in the following aspects:

[0028] 1. The present invention has a reasonable structural design. The filter element cleaning mechanism can move up and down to clean the outer surface of the filter element more thoroughly. Compared with the traditional top spray cleaning, it is more efficient to ensure the stability of the filtrate quality, reduce filter residue, and thus extend the service life of the filter element.

[0029] 2. This utility model is easy to operate. The filter element adopts multi-tube support to form a multi-lobed structure in the cross-section, which makes the cross-section of the filter cloth present a wave-like pleat during the filtration process, so that the filter cake can be better broken and fall off the outer surface of the filter cloth during the later backflushing.

[0030] 3. In this utility model, multiple triangular prisms inside the filter element can rotate freely and randomly. During the blowing and evacuation of the filter cloth, the squeezing action between the triangular prisms and the filter cloth can better break the filter cake on the outer surface of the filter cloth, making the filter cake fall off more thoroughly. Attached Figure Description

[0031] Figure 1 This is the front view of this utility model;

[0032] Figure 2 This is a schematic diagram of the filter element of this utility model;

[0033] Figure 3 yes Figure 2 Top view;

[0034] Figure 4 This is a schematic diagram of the filter cleaning mechanism of this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the spiral tube receiving cylinder of this utility model.

[0036] In the diagram, 10-filter tank, 101-filter main inlet pipe, 102-stock solution storage tank, 103-stock solution transfer pump, 104-overflow pipe, 105-balanced exhaust pipe, 11-filter element support plate, 12-filter outlet connecting pipe, 13-filter outlet collection pipe, 130-filter outlet control valve, 131-filter transfer pump, 132-cleaned liquid storage tank, 14-reflux distribution ring, 141-reflux short pipe, 142-reflux transfer pipe, 1420-reflux transfer control valve, 143-reflux transfer pump, 15-backflush gas transfer pipe, 151-backflush gas control valve. 16-Tail liquid discharge pipe, 161-Tail liquid discharge control valve, 20-Filter element, 21-Filter element outlet pipe, 22-Filter element liquid passage pipe, 231-Top support plate, 232-Bottom support plate, 24-Filter cloth, 25-Triangular prism, 30-Filter element cleaning mechanism, 31-Filter element cleaning support plate, 310-Clean receiving hole, 32-Clean distribution ring, 33-Clean delivery pipe, 331-Clean delivery branch pipe, 332-Spiral tube receiving cylinder, 333-Spiral delivery pipe, 334-Clean liquid input pipe, 341-Clean lifting support slide rail, 342-Clean lifting support slider. Detailed Implementation

[0037] The following is combined with Figures 1-5 This utility model will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of their respective main views or structural schematic diagrams.

[0038] Example 1:

[0039] A self-cleaning ZS filter, such as Figure 1 As shown, the filter includes a filter tank 10, a filter element support plate 11 is fixed inside the filter tank 10, multiple vertically extending filter elements 20 are fixed on the lower side of the filter element support plate 11, and a filter element cleaning mechanism 30 is provided inside the filter tank 10.

[0040] like Figure 2 As shown, the filter element 20 includes a vertically extending filter element outlet pipe 21, and multiple vertically extending filter element through pipes 22 are provided around the filter element outlet pipe 21. The sidewall of the filter element through pipe 22 has a porous hollow structure with internal and external communication. The top of the multiple filter element through pipes 22 is fixed with a top support plate 231, and the bottom of the multiple filter element through pipes 22 is fixed with a bottom support plate 232.

[0041] A vertically extending, cylindrical filter cloth 24 is fixed between the top support plate 231 and the bottom support plate 232, and the filter cloth 24 surrounds multiple filter element liquid passage pipes 22.

[0042] The upper end of the filter element outlet pipe 21 is fixed to the top support plate 231.

[0043] A filter element support plate 11 is fixed with a filter outlet pipe 12, and the upper end of the filter element outlet pipe 21 is connected and fixedly connected to the filter outlet pipe 12.

[0044] The filtration outlet connecting pipe 12 is spirally extended and coiled and fixed on the upper side of the filter element support plate 11;

[0045] A filter tank 10 has a filter outlet collection pipe 13 fixed on its outer side, which is connected to the filter outlet communication pipe 12, and a clear liquid storage tank 132 is provided in connection with the filter outlet collection pipe 13.

[0046] The filter outlet collection pipe 13 is equipped with a filter outlet control valve 130;

[0047] The filtration outlet collection pipe 13 is equipped with a filtration transfer pump 131;

[0048] like Figure 4 As shown, the filter element cleaning mechanism 30 includes a filter element cleaning support plate 31 that is slidably connected in the vertical direction inside the filter tank 10 and arranged horizontally. The filter element cleaning support plate 31 has a plurality of vertically penetrating cleaning receiving holes 310. Each filter element 20 is correspondingly inserted into each cleaning receiving hole 310. An annular and hollow cleaning distribution ring 32 is fixed inside the cleaning receiving hole 310. A plurality of cleaning nozzles 320 that communicate with the inside of the cleaning distribution ring 32 are fixed on both the upper and lower sides of the cleaning distribution ring 32.

[0049] A cleaning delivery pipe 33 is fixed on the filter element cleaning support plate 31. The cleaning delivery pipe 33 is connected to each cleaning distribution ring 32 through multiple cleaning delivery branch pipes 331.

[0050] Example 2:

[0051] Based on Example 1, such as Figure 5 As shown, a vertically penetrating spiral tube receiving cylinder 332 is fixed on the filter element support plate 11. A spiral conveying pipe 333 is provided inside the spiral tube receiving cylinder 332. A cleaning liquid input pipe 334 is fixed on the top of the filter tank 10. The upper end of the spiral conveying pipe 333 is connected to the cleaning liquid input pipe 334, and the lower end of the spiral conveying pipe 333 is connected to the cleaning conveying pipe 33.

[0052] Example 3:

[0053] Based on Example 2, such as Figure 4 As shown, multiple vertically extending cleaning lifting support slide rails 341 are fixed on the inner side wall of the filter tank 10, and cleaning lifting support sliders 342 are slidably connected on the cleaning lifting support slide rails 341.

[0054] The cleaning lifting support slider 342 is driven by a prior art and waterproof linear motor structure to move along the cleaning lifting support slide rail 341. The moving part of the linear motor is fixed on the cleaning lifting support slider 342, and the stator of the linear motor is fixed on the cleaning lifting support slide rail 341.

[0055] Example 4:

[0056] Based on Example 3, such as Figure 1 As shown, a ring-shaped and hollow reflux distribution ring 14 is provided on the lower side of the filter tank 10. The reflux distribution ring 14 is connected to the inside of the filter tank 10 through multiple reflux short pipes 141.

[0057] The reflux distribution ring 14 is connected to the filter outlet collection pipe 13 via a reflux delivery pipe 142, and the reflux delivery pipe 142 is equipped with a reflux delivery pump 143.

[0058] The reflux conveying pipe 142 is located upstream of the filter outlet control valve 130, and the reflux conveying pipe 142 has a reflux conveying control valve 1420.

[0059] A backflush gas delivery pipe 15 is fixed on the filtrate collection pipe 13 and connected thereto. The backflush gas delivery pipe 15 is located upstream of the filtrate control valve 130 and has a backflush gas control valve 151.

[0060] A filter main inlet pipe 101 is fixed on the outside of the filter tank 10. A raw liquid storage tank 102 is connected to the filter main inlet pipe 101. A raw liquid transfer pump 103 is fixed in the raw liquid storage tank 102. The output end of the raw liquid transfer pump 103 is connected to the filter main inlet pipe 101 through a pipe.

[0061] The top of the filter tank 10 has an overflow pipe 104 and a balance exhaust pipe 105 that are connected to its interior;

[0062] The bottom of the filter tank 10 is fixed with a tail liquid discharge pipe 16 that is connected to its interior. The tail liquid discharge pipe 16 has a tail liquid discharge control valve 161 and is connected to the interior of the raw liquid storage tank 102.

[0063] The bottom of the filter tank 10 has an end cover that is opened and closed by an electrically controlled telescopic rod for discharging filter cake and filter residue.

[0064] Example 5:

[0065] Based on Example 4, such as Figure 3 As shown, multiple vertically extending triangular prisms 25 are rotatably connected between the top support plate 231 and the bottom support plate 232, and the side edges of the triangular prisms 25 are rounded.

[0066] Multiple triangular prisms 25 are located inside the filter cloth 24;

[0067] Multiple triangular prisms 25 are arranged one-to-one between two adjacent filter cartridge liquid pipes 22 and on one side close to the inner side of the filter cloth 24.

[0068] It should be noted that the filter cloth 24, filter transfer pump 131, filter outlet control valve 130, cleaning nozzle 320, reflux transfer pump 143, reflux transfer control valve 1420, backflushing gas control valve 151, raw liquid transfer pump 103, and tail liquid discharge control valve 161 used in this application are all commercially available products using existing technology. No special limitations are made here. Those skilled in the art can choose according to their needs, as long as the technical solution of this application can be achieved.

[0069] In practical applications, this invention is used to filter and treat catalytic slurry or concentrated catalytic slurry, hereinafter referred to as raw liquid. The raw liquid to be treated is stored in raw liquid storage tank 102. The raw liquid to be treated is fed into the filter tank 10 through the filter main inlet pipe 101 using raw liquid delivery pump 103. The air in the filter tank 10 is discharged from the balance exhaust pipe 105. The lower end of the overflow pipe 104 has a liquid level sensor. When the filter tank 10 is detected to be full of raw liquid, the input of raw liquid is stopped.

[0070] First, a circulating filtration process is performed. The raw liquid passes through the filter cloth 24 and then enters the liquid passage pipe 22 of each filter element. Particulate impurities in the raw liquid are intercepted on the outer surface of the filter cloth 24. The filtered raw liquid enters the liquid passage pipe 22 of each filter element and flows from top to bottom. Then it enters from the lower end of the filter element outlet pipe 21. The filtered raw liquid then flows from bottom to top in the filter element outlet pipe 21 and enters the filter outlet connecting pipe 12. The filtered raw liquid in the filter outlet connecting pipe 12 then enters the filter outlet collection pipe 13.

[0071] At this time, the filter outlet control valve 130 is closed and the return conveying control valve 1420 is open. The filtered raw liquid continues to enter the return conveying pipe 142 after passing through the filter outlet collection pipe 13. Under the conveying action of the return conveying pump 143, the filtered raw liquid then enters the return distribution ring 14 and finally returns to the filter tank 10 through each return short pipe 141. Under the continuous conveying operation of the return conveying pump 143, the raw liquid and return liquid in the filter tank 10 are subjected to circulation filtration treatment.

[0072] The return conveying pipe 142 is equipped with a differential pressure sensor to detect the pressure difference between the inside and outside of the filter cloth 24. When the differential pressure sensor reaches a preset value, it indicates that a filter cake of sufficient thickness has been formed on the outer surface of the filter cloth 24.

[0073] At this point, stop the reflux pump 143 and close the reflux control valve 1420. Then open the filter outlet control valve 130 and start the filter pump 131. After the raw liquid completes the circulation filtration process, it re-enters the filter outlet collection pipe 13 to form clear liquid. The clear liquid is then transported to the clear liquid storage tank 132 for storage.

[0074] The remaining tail liquid in the filter tank 10 goes out through the tail liquid discharge pipe 16 and then enters the original liquid storage tank 102, where it waits for the next filtration process together with the original liquid.

[0075] After the liquid in the filter tank 10 is drained, both the filter outlet control valve 130 and the return conveying control valve 1420 are closed.

[0076] Open the backflush gas control valve 151, and first use the air pump to evacuate the filter liquid collection pipe 13 through the backflush gas delivery pipe 15. Since the filter liquid collection pipe 13 is connected to the inside of the filter cloth 24 through the filter liquid connecting pipe 12 and the filter element liquid outlet pipe 21, a negative pressure is formed inside the filter cloth 24. The air in the filter tank 10 is discharged from the outside to the inside through the filter cloth 24, and the outside air enters the filter tank 10 through the balance exhaust pipe 105 to balance the air pressure.

[0077] Air is circulated through the filter cloth 24 to dry the filter cake on the outer surface of the filter cloth 24;

[0078] After the filter cake is dried, an air pump is used to blow air into the filter liquid collection pipe 13 through the back-blowing gas delivery pipe 15. The air enters the filter cloth 24 through the filter liquid collection pipe 13, the filter liquid connecting pipe 12, and the filter element liquid outlet pipe 21 in sequence, causing the filter cloth 24 to expand and break and fall off the filter cake attached to the outer surface.

[0079] The broken filter cake falls to the bottom of the filter tank 10, and the outer surface of the filter cloth 24 is cleaned by the filter element cleaning mechanism 30.

[0080] Cleaning fluid is introduced into the cleaning fluid inlet pipe 334 using a delivery pump based on existing technology. The cleaning fluid can be a surfactant-based cleaning fluid based on existing technology. The cleaning fluid enters the interior of each cleaning distribution ring 32 through the spiral delivery pipe 333, the cleaning delivery pipe 33, and the cleaning delivery branch pipe 331 in sequence. The cleaning fluid inside the cleaning distribution ring 32 is then sprayed out from each cleaning nozzle 320 to clean the outer surface of the filter cloth 24.

[0081] The cleaning lifting support slider 342 is driven by a waterproof linear motor structure to move along the cleaning lifting support slide rail 341. The cleaning lifting support slider 342 then drives the entire filter element cleaning support plate 31 to move together, so as to thoroughly clean the outer surface of the filter cloth 24 in the vertical direction.

[0082] The bottom of the filter tank 10 has an end cap that is opened and closed by an electrically controlled telescopic rod. By opening the end cap at the bottom of the filter tank 10, the turbid cleaning liquid formed after cleaning and the filter cake that has fallen into the bottom of the filter tank 10 can be discharged together from the end cap.

Claims

1. A self-cleaning ZS filter, characterized by, The filter tank (10) is internally fixed with a filter core support plate (11), the lower side of the filter core support plate (11) is fixed with a plurality of vertically extending filter cartridges (20), and the filter tank (10) is internally provided with a filter core cleaning mechanism (30); The filter core cleaning mechanism (30) comprises a filter core cleaning support plate (31) which is slidably connected in the filter tank (10) in the vertical direction and is horizontally arranged, the filter core cleaning support plate (31) is provided with a plurality of vertically penetrating cleaning containing holes (310), the cleaning containing holes (310) are fixedly provided with annular and hollow cleaning distribution rings (32), and the upper and lower sides of the cleaning distribution rings (32) are fixedly provided with a plurality of cleaning nozzles (320) which are in communication with the interiors of the cleaning distribution rings (32); The filter core cleaning support plate (31) is fixedly provided with a cleaning conveying pipe (33), and the cleaning conveying pipe (33) is in communication with each cleaning distribution ring (32) through a plurality of cleaning conveying branch pipes (331).

2. The self-cleaning ZS filter according to claim 1, wherein The filter core support plate (11) is fixedly provided with a vertically penetrating spiral pipe containing cylinder (332), the spiral pipe containing cylinder (332) is internally provided with a spiral conveying pipe (333), the top of the filter tank (10) is fixedly provided with a cleaning liquid input pipe (334), the upper end of the spiral conveying pipe (333) is in communication with the cleaning liquid input pipe (334), and the lower end of the spiral conveying pipe (333) is in communication with the cleaning conveying pipe (33).

3. The self-cleaning ZS filter according to claim 1, wherein The inner side wall of the filter tank (10) is fixedly provided with a plurality of vertically extending cleaning lifting support sliding rails (341), and the cleaning lifting support sliding rails (341) are slidably connected with cleaning lifting support sliding blocks (342).

4. The self-cleaning ZS filter according to claim 1, wherein The filter cartridge (20) comprises a vertically extending filter cartridge liquid outlet pipe (21), the periphery of the filter cartridge liquid outlet pipe (21) is provided with a plurality of vertically extending filter cartridge liquid passing pipes (22), the top of the plurality of filter cartridge liquid passing pipes (22) is fixedly provided with a top end support plate (231), and the lower end of the plurality of filter cartridge liquid passing pipes (22) is fixedly provided with a bottom end support plate (232); The top end support plate (231) and the bottom end support plate (232) are fixedly provided with a vertically extending and cylindrical filter cloth (24), and the filter cloth (24) surrounds the plurality of filter cartridge liquid passing pipes (22); The upper end of the filter cartridge liquid outlet pipe (21) penetrates and is fixedly connected to the top end support plate (231); The upper side of the filter core support plate (11) is fixedly provided with a filter liquid outlet communication pipe (12), and the upper end of the filter cartridge liquid outlet pipe (21) is in communication and fixed connection with the filter liquid outlet communication pipe (12); The outer side of the filter tank (10) is fixedly provided with a filter liquid outlet collection pipe (13) which is in communication with the filter liquid outlet communication pipe (12), and a clear liquid storage tank (132) is arranged in communication with the filter liquid outlet collection pipe (13); The filter liquid outlet collection pipe (13) is provided with a filter conveying pump (131).

5. A self-cleaning ZS filter according to claim 4, wherein The filter tank body (10) is provided with an annular and hollow backflow distribution ring (14) on the lower side, which is communicated with the inside of the filter tank body (10) through a plurality of backflow short pipes (141); The backflow distribution ring (14) and the filtered liquid collecting pipe (13) are communicated through a backflow conveying pipe (142), and the backflow conveying pipe (142) is provided with a backflow conveying pump (143).

6. The self-cleaning ZS filter according to claim 4, wherein A plurality of vertical triangular prisms (25) are rotationally connected between the top end supporting plate (231) and the bottom end supporting plate (232), and the side edges of the triangular prisms (25) are chamfered; A plurality of the triangular prisms (25) are all located inside the filter cloth (24).

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