A filter cartridge backflushing device

Abstract

The application discloses a filter core backwashing device of a filter and relates to the technical field of filters.The filter core backwashing device comprises a filter tank and a top cover used for closing the filter tank, the filter tank is internally provided with a filter core, the filter core is installed at a connecting position of the filter tank and the top cover, the top cover is internally fixedly connected with a mounting plate, the bottom of the mounting plate is detachably connected with a cleaning mechanism used for cleaning the filter core, and the cleaning mechanism comprises a fixed sealing ring, a positioning plate and a plurality of cleaning assemblies.The efficient cleaning of the inner wall of the filter core is realized through the arrangement of the cleaning mechanism, in the cleaning process, the gas serves as a power source, not only drives the rotation and extension of the cleaning assemblies, but also forms rotating air flow through the injection of high-pressure gas, the rotating air flow can comprehensively and deeply clean the silicon powder residues on the inner wall of the filter core, the cleaning efficiency is improved, the cleaned filter core can be repeatedly used, the service life of the filter core is prolonged, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter, in particular to a filter core backwashing device of filter. BACKGROUND

[0002] Silicon powder, also known as micro silicon powder, is a kind of industrial dust collected from the exhaust gas of industrial electric furnace during the process of high-temperature smelting of industrial silicon and ferrosilicon. In the exhaust dust, SiO 2 The content accounts for about 90% of the total amount of dust, and the particle size is very small, almost at the nanometer level, so it is called silicon powder.

[0003] The working principle of tail gas filtration is that the dust is captured by the filter element due to the effects of screening, inertia, adhesion, diffusion and static electricity. Inertia is that the dust directly hits the filter layer and is captured, particles smaller than the pore size bypass the fiber with the airflow, and particles larger than the pore size are captured. The larger the dust diameter, the greater the inertia; the higher the filtration air speed, the greater the inertia. However, the higher the filtration air speed, the more serious the penetration phenomenon, the higher the dust concentration of the outlet gas, and the lower the filtration efficiency. When the dust particles are at the nanometer level, due to their extremely small size, Brownian motion like gas molecule thermal motion will occur, increasing the chances of dust contacting the filter layer surface, so that the dust is captured. The silicon powder filter needs to pass through two-stage filtration: first, remove large particles by gravity sedimentation separation; second, fine particles are intercepted by precise stainless steel fiber filter core, and the filtration precision can reach submicron level.

[0004] The filter core of the traditional silicon powder filter accumulates silicon powder on the surface of the filter core after long-term use, causing the filter core to be blocked, affecting the filtration of the silicon powder filter, resulting in poor filtration efficiency of the silicon powder filter. The filter core is usually fixedly installed in the interior of the tank body and cannot be disassembled and replaced. When the filtering effect of the filter core cannot meet the filtering requirements after long-term use, it needs to be replaced, which not only increases the maintenance cost, but also affects the continuous operation of the silicon powder filter.

[0005] In view of the above problems, a filter core backwashing device of filter is provided. SUMMARY

[0006] The purpose of the present application is to provide a filter core backwashing device of filter to solve the above problems.

[0007] To solve the above technical problems, the present application specifically provides the following technical solutions:

[0008] The utility model provides a filter's filter core backflushing device, including filter jar and the top cover for closing filter jar, the input pipe is connected with filter jar bottom, the output pipe is connected with the top cover one side, the inside of filter jar is provided with filter core, and the filter core is installed in filter jar and top cover junction, the inside fixed connection of top cover has the mounting plate, the bottom of mounting plate is detachably connected with the cleaning mechanism for cleaning filter core, the cleaning mechanism includes fixed sealing ring, positioning plate and a plurality of cleaning components, the bottom of mounting plate is detachably connected with fixed sealing ring, the inside fixed connection of positioning plate has a plurality of through -hole with the core rod corresponding of filter core, all cleaning components rotate setting in the bottom of positioning plate, and respectively located a plurality of through -hole just below, the bottom of filter jar is communicated with vacuum adsorption pipe, the top of top cover is connected with the connecting pipe.

[0009] As a preferred scheme of the utility model, the cleaning component includes a fixed sleeve, a rotating sleeve, an extension tube and a spiral blade, the fixed sleeve is fixedly connected to the bottom of the positioning plate and communicates with the corresponding through-hole, the rotating sleeve is sleeved outside the fixed sleeve and is rotationally connected with the fixed sleeve, the extension tube is limitingly and slidingly connected outside the rotating sleeve, the spiral blade is fixedly connected inside the rotating sleeve, a spring is fixedly connected to the inner bottom wall of the extension tube, and the top of the spring is fixedly connected with the bottom of the spiral blade, a plurality of openings are formed in the outer walls of the rotating sleeve and the extension tube;

[0010] When the external pressure medium is delivered into the rotating sleeve, the pressure medium can push the rotating sleeve to rotate and push the extension tube to move downward.

[0011] As a preferred scheme of the utility model, the outer wall of the extension tube is provided with a cleaning brush, when the extension tube extends into the inside of the core rod of the filter core, the cleaning brush abuts against the inner wall of the core rod.

[0012] As a preferred scheme of the utility model, a sending inlet is formed in the middle of the mounting plate, and a one-way valve is arranged inside the sending inlet.

[0013] As a preferred scheme of the utility model, the output pipe is located below the mounting plate, the height of the fixed sealing ring is equal to the gap distance between the mounting plate and the filter core;

[0014] When the fixed sealing ring is installed at the bottom of the mounting plate, the channel between the output pipe and the filter core is closed.

[0015] As a preferred scheme of the utility model, the length of the extension tube is greater than that of the rotating sleeve, and the diameter of the extension tube is smaller than the inner diameter of the core rod of the filter core.

[0016] As a preferred scheme of the present application, the rotating sleeve, the telescopic pipe and the spiral blade are all made of stainless steel.

[0017] As a preferred scheme of the present application, the bottom of the telescopic pipe is closed.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] By the arrangement of the cleaning mechanism, efficient cleaning of the inner wall of the filter element is realized. In the cleaning process, the gas serves as a power source, not only driving the rotation and telescoping of the cleaning assembly, but also forming a rotating gas flow through the injection of high-pressure gas. This rotating gas flow can comprehensively and deeply clean the silicon powder residues on the inner wall of the filter element. In addition, due to the limiting sliding connection design of the telescopic pipe and the rotating sleeve, the telescopic pipe can automatically move downward and rotate under the push of the gas, further enhancing the cleaning effect. The present application not only improves the cleaning efficiency, but also realizes the automation of the cleaning process, greatly reducing the burden of manual maintenance. The cleaned filter element can be repeatedly used, thereby prolonging the service life of the filter element and reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can also be obtained from the provided drawings without creative labor.

[0021] Figure 1 A schematic diagram of the overall structure of the filter element backflushing device of the filter is provided for the present application;

[0022] Figure 2 A front view structural cross-sectional view of the filter element backflushing device of the filter is provided for the present application;

[0023] Figure 3 A schematic diagram of the connection structure of the cleaning mechanism and the filter element is provided for the present application;

[0024] Figure 4 A structural schematic diagram of the cleaning assembly is provided for the present application;

[0025] Figure 5 A front view structural cross-sectional view of the cleaning assembly is provided for the present application;

[0026] Figure 6 An enlarged view of structure A of the present application is provided; Figure 5

[0027] Figure 7 A schematic diagram of the connection structure of the cleaning mechanism and the filter element is provided for the present application;​Figure 5 Enlarged view of the structure at point B.

[0028] The labels in the diagram represent the following:

[0029] 1. Filter tank; 2. Top cover; 3. Inlet pipe; 4. Outlet pipe; 5. Filter element; 6. Cleaning mechanism; 7. Fixing seal ring; 8. Positioning plate; 9. Cleaning assembly; 10. Through hole;

[0030] 21. Mounting plate; 22. Vacuum suction tube; 23. Connecting tube; 24. Feed inlet; 91. Fixing ring; 92. Rotating sleeve; 93. Telescopic tube; 94. Spiral blade; 95. Spring; 96. Opening; 97. Cleaning brush. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figure 1 - Figure 7 As shown, the present invention provides a filter cartridge backwashing device, including a filter tank 1 and a top cover 2 for sealing the filter tank 1. An input pipe 3 is connected to the bottom of the filter tank 1, and an output pipe 4 is connected to one side of the top cover 2. A filter cartridge 5 is fixedly installed inside the filter tank 1, and the filter cartridge 5 is installed at the connection between the filter tank 1 and the top cover 2. An installation plate 21 is fixedly connected inside the top cover 2. An inlet 24 is opened in the middle of the installation plate 21, and a one-way valve is installed inside the inlet 24. A cleaning mechanism 6 for cleaning the filter cartridge 5 is detachably connected to the bottom of the installation plate 21. The cleaning mechanism 6 includes a fixing sealing ring 7, a positioning plate 8, and multiple cleaning components 9. The fixing sealing ring 7 is detachably connected to the bottom of the installation plate 21, and the positioning plate 8 is fixedly connected inside the fixing sealing ring 7. Multiple through holes 10 corresponding to the filter cartridge 5 are opened on the positioning plate 8. All cleaning components 9 are rotatably arranged at the bottom of the positioning plate 8 and are located directly below the multiple through holes 10. A vacuum adsorption pipe 22 is connected to one side of the bottom of the filter tank 1, and a connecting pipe 23 is connected to the top of the top cover 2.

[0034] The filter element in this invention comprises multiple evenly arranged filter rods, each with multiple filter holes. In use, silicon powder is fed from the input pipe 3 into the filter element 5, filtered by the multiple filter rods on the filter element 5, and then discharged through the output pipe 4, thus completing the silicon powder filtration process.

[0035] When the filter core 5 needs to be cleaned, the operation steps are as follows: first, close the input pipe 3 and the output pipe 4, and ensure that the inside of the filter tank 1 is closed. Then, high-pressure gas is sent into the inside of the top cover 2 through the connecting pipe 23, and the high-pressure gas enters the cavity between the cleaning mechanism 6 and the mounting plate 21 through the inlet 24. Since the inside of the inlet 24 is provided with a one-way valve, the gas can only flow in one direction, avoiding the gas from entering the inside of the top cover 2 from the connecting pipe 23 during filtration. When the gas enters the inside of the top cover 2, it enters the inside of the fixed sealing ring 7 through the inlet 24. As the air pressure in the inside of the fixed sealing ring 7 continuously increases, the cleaning mechanism 6 is pushed downward by the gas pressure, so that the cleaning assembly 9 moves downward and extends, and the gas is divided and sprayed into the filter rod to effectively remove the silicon powder residue attached to the filter core 5. With the continuous input of high-pressure gas, the vacuum suction pipe 22 is started at the same time, and the silicon powder residue and impurities washed down are sucked out from the bottom of the filter tank 1 by the negative pressure, further ensuring the thoroughness of the cleaning. After cleaning, stop the input of high-pressure gas, and close the vacuum suction pipe 22. At this time, the cleaning mechanism 6 is reset. In addition, since the cleaning assembly 9 is rotatably arranged, it can ensure that the filter rod is fully washed without dead angle, further improving the cleaning effect.

[0036] It is worth noting that since the cleaning mechanism 6 and the mounting plate 21 are detachably connected, the filtering of silicon powder and the cleaning of the filter core 5 are carried out in two stages. During the daily work of the filter tank 1, the cleaning mechanism 6 is not installed in the filter tank 1. Only when the filtering effect is reduced due to the attachment of dust after the filter tank 1 works for a period of time and needs to be cleaned, the filter tank 1 stops working. At this time, the top cover 2 at the upper part of the filter tank 1 is opened, the cleaning mechanism 6 is installed in the filter tank 1, and the fixed sealing ring 7 of the cleaning mechanism 6 is fixedly connected to the bottom of the mounting plate 21 by bolts or buckles. After the fixed sealing ring 7 is installed at the bottom of the mounting plate 21, a plurality of cleaning assemblies 9 are inserted into a plurality of filter rods of the filter core 5. Then, the filter core 5 is further fixed in the filter tank 1 through the top cover 2.

[0037] Further, the cleaning assembly 9 comprises a fixed sleeve 91, a rotating sleeve 92, an extension pipe 93 and a spiral blade 94. The fixed sleeve 91 is fixedly connected to the bottom of the positioning plate 8 and communicates with the corresponding through hole 10. The rotating sleeve 92 is sleeved outside the fixed sleeve 91 and is rotatably connected with the fixed sleeve 91. The extension pipe 93 is limitingly and slidingly connected outside the rotating sleeve 92. The spiral blade 94 is fixedly connected inside the rotating sleeve 92. The spring 95 is fixedly connected to the inner bottom wall of the extension pipe 93, and the top of the spring 95 is fixedly connected with the bottom of the spiral blade 94. A plurality of openings 96 are formed in the outer walls of the rotating sleeve 92 and the extension pipe 93.

[0038] When an external pressure medium is delivered into the rotating sleeve 92, the pressure medium can drive the rotating sleeve 92 to rotate and push the telescopic tube 93 to move downward.

[0039] The bottom of the telescopic tube 93 is enclosed.

[0040] When gas enters the cavity between the mounting plate 21 and the fixed sealing ring 7, it is diverted through multiple through holes 10 to multiple cleaning components 9. As the gas passes through the fixed sleeve 91 and enters the rotating sleeve 92, it first impacts the spiral blades 94, causing them to rotate. Since the spiral blades 94 are fixed inside the rotating sleeve 92, the air pressure causes the rotating sleeve 92 to rotate. The gas then travels along the spiral blades 94 into the telescopic tube 93. Because the telescopic tube 93 and the rotating sleeve 92 are in a limited sliding configuration, and the bottom of the telescopic tube 93 is closed, the air pressure pushes the telescopic tube 93 downwards. During this downward movement, the spring 95 is stretched. When the telescopic tube 93 reaches its limit position, the tension of the spring 95 and the thrust of the air pressure reach equilibrium. At this point, the spiral blades 94 and the rotating sleeve 92 continue to rotate under the continuous push of the gas, and high-pressure gas is ejected from the opening 96. Due to the arrangement of the spiral blades 94, the high-pressure gas ejected from the opening 96 can form a rotating airflow to clean the inner wall of the filter rod of the filter element 5.

[0041] Because the telescopic tube 93 and the rotating sleeve 92 are connected by a limiting sliding connection, when the rotating sleeve 92 rotates, it can further drive the telescopic tube 93 to rotate. Furthermore, since the bottom of the telescopic tube 93 is closed, gas accumulates inside. When the gas pressure reaches a certain level, the gas is released to the outside through the opening 96 on the outer wall of the telescopic tube 93 and the rotating sleeve 92. During this process, the release of gas generates a certain impact force, which helps to further clean stubborn impurities on the inner wall of the filter element 5. After cleaning, the gas input is turned off. At this time, the spring 95 returns to its original position after losing the thrust from the gas pressure, allowing the telescopic tube 93 to automatically retract to its initial position. This process requires no additional energy consumption, and the entire cleaning process is efficient and automatic, greatly improving the maintenance efficiency and cleanliness of the filter element 5. It is worth noting that in this invention, the pressure medium supplied to the connecting pipe 23 can be gas or liquid, which can be selected and adjusted according to the actual situation.

[0042] This invention achieves efficient cleaning of the inner wall of the filter element 5 through the cleaning mechanism 6. During the cleaning process, gas acts as a power source, not only driving the rotation and extension of the cleaning component 9, but also forming a rotating airflow through the injection of high-pressure gas. This rotating airflow can thoroughly and deeply clean the silicon powder residue on the inner wall of the filter element 5. Furthermore, due to the limiting sliding connection design between the telescopic tube 93 and the rotating sleeve 92, the telescopic tube 93 can automatically move downward and rotate under the propulsion of the gas, further enhancing the cleaning effect. This not only improves cleaning efficiency but also automates the cleaning process. The cleaned filter element 5 can be reused multiple times, thereby extending its service life and reducing production costs.

[0043] Furthermore, a cleaning brush 97 is provided on the outer wall of the telescopic tube 93. When the telescopic tube 93 extends into the filter rod of the filter element 5, the cleaning brush 97 comes into contact with the inner wall of the filter rod.

[0044] By setting a cleaning brush 97 on the outer wall of the telescopic tube 93, the cleaning brush 97 can scrub the inner wall of the filter rod as the telescopic tube 93 extends into and moves through the interior of the filter rod, effectively removing the silica powder adhering to the wall surface, and further improving cleaning efficiency and practicality.

[0045] The output pipe 4 is located below the mounting plate 21, and the height of the fixing sealing ring 7 is equal to the gap between the mounting plate 21 and the filter element 5. When the fixing sealing ring 7 is installed at the bottom of the mounting plate 21, the channel between the output pipe 4 and the filter element 5 is sealed. When the fixing sealing ring 7 is fixed at the bottom of the mounting plate 21, it can seal the channel between the output pipe 4 and the filter element 5, enhance the sealing performance, prevent gas from entering and leaking into the output pipe 4, and ensure the effective transmission and utilization of high-pressure gas.

[0046] The length of the telescopic tube 93 is greater than that of the rotating sleeve 92, and the diameter of the telescopic tube 93 is smaller than the inner diameter of the filter element 5. This allows the telescopic tube 93 to move smoothly within the filter element 5 without encountering excessive resistance. At the same time, the smaller diameter of the telescopic tube 93 ensures that there is no excessive friction between the telescopic tube 93 and the filter element during the extension and retraction process, thereby extending the service life of the device.

[0047] The rotating sleeve 92, telescopic tube 93, and spiral blade 94 are all made of stainless steel. Stainless steel has high strength and can withstand greater impact forces.

[0048] The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A filter cartridge backwashing device, comprising a filter tank (1) and a top cover (2) for sealing the filter tank (1), characterized in that, The bottom of the filter tank (1) is connected to an inlet pipe (3), and the top cover (2) is connected to an outlet pipe (4). The filter tank (1) is equipped with a filter element (5), which is installed at the connection between the filter tank (1) and the top cover (2). The top cover (2) is fixedly connected to an installation plate (21). The bottom of the installation plate (21) is detachably connected to a cleaning mechanism (6) for cleaning the filter element (5). The cleaning mechanism (6) includes a fixing sealing ring (7), a positioning plate (8), and multiple cleaning rings. The component (9) has a fixed sealing ring (7) detachably connected to the bottom of the mounting plate (21), and the positioning plate (8) is fixedly connected to the inside of the fixed sealing ring (7). The positioning plate (8) has multiple through holes (10) corresponding to the core rod of the filter element (5). All the cleaning components (9) are rotatably set at the bottom of the positioning plate (8) and are located directly below the multiple through holes (10). The bottom side of the filter tank (1) is connected to a vacuum adsorption tube (22), and the top of the top cover (2) is connected to a connecting tube (23). The cleaning component (9) includes a fixed collar (91), a rotating sleeve (92), a telescopic tube (93), and a spiral blade (94). The fixed collar (91) is fixedly connected to the bottom of the positioning plate (8) and communicates with the corresponding through hole (10). The rotating sleeve (92) is sleeved on the outside of the fixed collar (91) and is rotatably connected to the fixed collar (91). The telescopic tube (93) is limited and slidably connected to the outside of the rotating sleeve (92). The spiral blade (94) is fixedly connected to the inside of the rotating sleeve (92). A spring (95) is fixedly connected to the bottom wall of the telescopic tube (93), and the top of the spring (95) is fixedly connected to the bottom of the spiral blade (94). Multiple openings (96) are provided on the outer walls of both the rotating sleeve (92) and the telescopic tube (93). When the external pressure medium is delivered to the inside of the rotating sleeve (92), the pressure medium can push the rotating sleeve (92) to rotate and push the telescopic tube (93) to move downward; The outer wall of the telescopic tube (93) is provided with a cleaning brush (97). When the telescopic tube (93) is inserted into the core rod of the filter element (5), the cleaning brush (97) abuts against the inner wall of the core rod. The mounting plate (21) has a feed inlet (24) in the middle, and a one-way valve is provided inside the feed inlet (24); The bottom of the telescopic tube (93) is closed.

2. The filter cartridge backwashing device according to claim 1, characterized in that: The output tube (4) is located below the mounting plate (21), and the height of the fixing sealing ring (7) is equal to the gap distance between the mounting plate (21) and the filter element (5); When the fixed sealing ring (7) is installed at the bottom of the mounting plate (21), the channel between the output pipe (4) and the filter element (5) is closed.

3. The filter cartridge backwashing device according to claim 1, characterized in that: The length of the telescopic tube (93) is greater than the length of the rotating sleeve (92), and the diameter of the telescopic tube (93) is smaller than the inner diameter of the core rod of the filter element (5).

4. The filter cartridge backwashing device according to claim 1, characterized in that: The rotating sleeve (92), telescopic tube (93), and spiral blade (94) are all made of stainless steel.

Images