A circulating filtration device

Abstract

This invention discloses a circulating filtration device, belonging to the technical field of filtration devices. Traditional filters continuously adsorb or accumulate particulate matter on their filter screens, reducing efficiency. This invention includes: an annular filter cylinder, with an inlet pipe tangentially connected along its annular shape, a drain pipe radially connected to its outer side, and a slag discharge pipe connected to its bottom; a filter screen located at the connection point between the filter cylinder and the drain pipe, with a curved inner surface; a flow-concentrating assembly that constrains the unidirectional circulation of water within the filter cylinder, rotating within the filter cylinder along with the water flow; and a brush mounted on the flow-concentrating assembly that, as the assembly rotates, brushes the curved inner surface of the filter screen. This structure achieves simultaneous filtration of the circulating water and self-cleaning of the filter screen by a portion of the circulating water. Simultaneously, the flow-concentrating assembly and brush clean the adsorbed particulate impurities from the filter screen, ensuring continuous filtration efficiency. Only periodic removal of accumulated particulate impurities is required, reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, and more particularly to a circulating filtration device. Background Technology

[0002] In power plants, water is an important temperature control medium, mainly used in water circulation cooling systems for power generation equipment. However, during the water circulation process, various pollutants such as particles, mud, sediment, rust, bacteria, and microorganisms may seep in. If these pollutants directly enter the power generation equipment, they can cause damage or blockage, affecting normal operation. At the same time, impurities in the water can also reduce thermal efficiency and power generation efficiency.

[0003] Existing filters mainly consist of filter tanks and filter screens. Filter screens come in various shapes, such as flat or cylindrical. They filter circulating water by setting single or multiple layers of filter screens inside the filter tank. The drawback of this type of filtration is that particulate matter is continuously adsorbed or accumulated on the filter screen during the filtration process, reducing the efficiency of continuous filtration. At the same time, frequent replacement and cleaning of the filter screen affects production efficiency and increases operation and maintenance costs. To solve the above problems, this invention proposes a circulating filtration device. Summary of the Invention

[0004] The purpose of this invention is to address the problem of traditional filters continuously adsorbing or accumulating particulate matter on the filter screen during water circulation filtration, thereby reducing continuous filtration efficiency and increasing operation and maintenance costs. This invention proposes a circulating filtration device that achieves circulating filtration of the circulating water in a water circulation cooling system. Employing a unique circulating filtration structure, the impact force of the circulating water flow washes the filter screen across its surface, reducing particulate matter adsorption and clogging. Particulate matter accumulates at low points and is periodically discharged, reducing the frequency of filter screen cleaning and lowering operation and maintenance costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A circulating filtration device includes: a filter cylinder, which is annular, including an inlet pipe connected tangentially along the annulus, a drain pipe connected radially to the outer side, and a slag discharge pipe connected to the bottom; a filter screen, which is disposed at the connection between the filter cylinder and the drain pipe and has a curved inner side; a flow-concentrating assembly, which can constrain the unidirectional circulation of circulating water in the filter cylinder and can rotate in the filter cylinder along with the circulation of circulating water; and a brush provided on the flow-concentrating assembly, which can brush the curved inner surface of the filter screen as the flow-concentrating assembly rotates.

[0007] The design principle of this invention, compared to traditional canister filters, utilizes an annular filter cylinder to provide a circulating water environment. The filter cylinder is tangentially connected to an inlet pipe, radially connected to an outlet pipe, and a slag discharge pipe at the bottom. A filter screen is installed at the connection point between the filter cylinder and the outlet pipe, with the inner side of the screen having a curved surface smooth to the inner side of the filter cylinder. Simultaneously, a flow-directing assembly controlling unidirectional flow is installed inside the filter cylinder. Ultimately, after the circulating water enters the filter cylinder and flows within it, some of the circulating water is filtered and discharged through the outlet pipe after passing through the filter screen. Meanwhile, because the fluid flow direction at the filter screen is tangential to the inner curved surface of the screen, another portion of the circulating water... Driven by the continuous flow of water, impurity particles adsorbed on the inner curved surface of the filter screen are impacted and dislodged, and then collected in the slag discharge pipe by another part of the continuously flowing circulating water. The other part of the circulating water mixes with the newly injected circulating water and circulates in this way. During this process, the flow-concentrating component constrains the unidirectional circulation of the circulating water in the filter cartridge, preventing the circulating water from entering the filter cartridge and being discharged through two paths through the drain pipe, thus preventing the formation of a circulating fluid. At the same time, the flow-concentrating component can also rotate along with the stable circulating water. During the rotation, the brushes installed on it can also clean the filter screen by abrasion, improving the filtration efficiency. Personnel only need to open the slag discharge pipe periodically to remove particulate impurities, reducing operation and maintenance costs.

[0008] As a further description of the above technical solution: it also includes: a support component, including a high-position support member and at least two low-position support members; the high-position support member and the low-position support member support the filter cartridge tray, so that the filter cartridge annular surface is inclined and has a high position point and a low position point.

[0009] Specifically, by installing the filter cylinder at an angle, a sedimentation space is provided for the low-level collection of particulate impurities, which facilitates the collection of particulate impurities in the slag discharge pipe.

[0010] As a further description of the above technical solution:

[0011] The angle of inclination of the filter cylinder ring is 0-10 degrees. By controlling the angle of inclination, that is, the angle of inclination should not be too large, it is avoided to affect the circulation of circulating water in the filter cylinder, that is, to reduce the gravitational potential energy that the circulation needs to overcome.

[0012] As a further description of the above technical solution:

[0013] The high-position support includes a high-position bracket, with an arc-shaped tray I connected to the top of the high-position bracket and a rotating positioning plate connected to the bottom. The low-position support includes a low-position bracket, with an arc-shaped tray II connected to the top of the low-position bracket.

[0014] As a further description of the above technical solution:

[0015] The line connecting the high and low points of the filter cylinder is line one, and the lines connecting the inlet pipe and the outlet pipe to the filter cylinder are line two. Line one is perpendicular to line two, and the slag discharge pipe is located at the low point.

[0016] As a further description of the above technical solution:

[0017] A control valve is installed on the slag discharge pipe.

[0018] As a further description of the above technical solution: the beam assembly includes two valve bodies and a connecting rod connecting the two valve bodies. The valve body is a one-way valve body, including a ring body and a valve disc rotatably mounted on the ring body. At the same time, the ring body is also provided with a protrusion that restricts the valve disc from rotating to one side. The ring bodies included in the two valve bodies are connected by the connecting rod.

[0019] As a further description of the above technical solution: the connecting rod is in the shape of a semi-circular ring.

[0020] As a further description of the above technical solution:

[0021] The two valve bodies limit the flow of circulating water to flow from the inlet pipe to the high point of the filter cartridge, then part of it passes through the filter screen and enters the outlet pipe, and the other part enters the low point and continues to flow.

[0022] As a further description of the above technical solution:

[0023] The drain pipe is equipped with a clamp to install a filter screen.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] After entering the filter cartridge, the circulating water flows inside. When passing through the filter screen, some of the circulating water is filtered and discharged through the drain pipe. At the same time, because the fluid flow direction at the filter screen is tangent to the inner curved surface of the filter screen, impurity particles adsorbed on the inner curved surface of the filter screen are impacted and dislodged by the continuous flow of another part of the circulating water. These particles are then collected in the slag discharge pipe by the continuous flow of another part of the circulating water. The other part of the circulating water mixes with the newly injected circulating water and circulates in this way. During this process, the flow-concentrating component constrains the unidirectional circulation of the circulating water in the filter cartridge. At the same time, the flow-concentrating component can also rotate along with the stable circulating water. During the rotation, the brushes installed on it can also clean the filter screen by abrasion, which improves the filtration efficiency. Personnel only need to open the slag discharge pipe periodically to remove particulate impurities, reducing operation and maintenance costs. Attached Figure Description

[0026] Figure 1 A three-dimensional illustration of a circulating filtration device provided according to an embodiment of the present invention is shown. Figure 1 ;

[0027] Figure 2 A three-dimensional illustration of a circulating filtration device provided according to an embodiment of the present invention is shown. Figure 2 ;

[0028] Figure 3 A left view of a circulating filtration device provided according to an embodiment of the present invention is shown;

[0029] Figure 4 A half-sectional perspective view of a filter cartridge provided according to an embodiment of the present invention is shown;

[0030] Figure 5 A perspective view showing a half-section of the filter cartridge and the filter screen and beam assembly provided according to an embodiment of the present invention is shown.

[0031] Figure 6 A perspective view of a beam assembly provided according to an embodiment of the present invention is shown;

[0032] Figure 7 A schematic diagram of the circulating filtration principle provided according to an embodiment of the present invention is shown.

[0033] Legend:

[0034] 10. Filter cartridge; 10a. Liquid inlet pipe; 10b. Liquid outlet pipe; 10b1. Clamp; 10c. Slag outlet pipe; 10c1. Control valve;

[0035] 20. Filter screen;

[0036] 30. Beam assembly; 31. Ring body; 32. Valve disc; 33. Protrusion; 34. Connecting rod;

[0037] 40. Brush;

[0038] 50. Support component; 51. High-position bracket; 511. Tray 1; 52. Positioning plate; 53. Low-position bracket; 531. Tray 2. Detailed Implementation

[0039] 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.

[0040] By analyzing the technical problems existing in existing filtration devices, the circulating filtration device proposed in this invention aims to overcome the problems of continuous filtration efficiency being affected by the adsorption and clogging of particulate impurities during the circulating filtration process, as well as the high maintenance costs caused by frequent replacement and cleaning.

[0041] like Figure 1-6 As shown, the circulating filtration device includes an annular filter cylinder 10, providing a place for circulating water to flow. An inlet pipe 10a is connected tangentially to the filter cylinder 10 along its annular shape, and a drain pipe 10b is connected radially outward from the filter cylinder 10. The inlet pipe 10a and drain pipe 10b are connected to the water circulation cooling system network. A filter screen 20 is installed at the connection between the drain pipe 10b and the filter cylinder 10. A clamp 10b1 is provided inside the drain pipe 10b to hold the filter screen 20 in place. The inner side of the filter screen 20 is curved, smoothly transitioning to the inner wall of the filter cylinder 10. A slag discharge pipe 10c is also connected to the bottom of one side of the filter cylinder 10. A flow-constricting assembly 30 is also installed inside the filter cylinder 10, which can constrain the circulating water to circulate unidirectionally within the filter cylinder 10. The circulating water flows and rotates inside the filter cylinder 10. Specifically, after entering the filter cylinder 10, the circulating water flows inside it. When passing through the filter screen 20, some of the circulating water is filtered and discharged through the drain pipe 10b. At the same time, the flow direction of the fluid passing through the filter screen 20 is tangential to the inner curved surface of the filter screen. That is, under the continuous flow of the other part of the circulating water, the impurity particles adsorbed on the inner curved surface of the filter screen 20 will be impacted and dislodged, and collected in the slag discharge pipe 10c under the continuous flow of the other part of the circulating water. The other part of the circulating water is mixed with the newly injected circulating water in the inlet pipe 10a and circulates in this way, which can effectively reduce the amount of particulate impurities adsorbed on the inner surface of the filter screen 20 and avoid affecting the continuous filtration.

[0042] In addition to achieving the above-mentioned extrusion function, the flow-concentrating component 30 constrains the unidirectional circulation of circulating water within the filter cartridge 10, preventing the circulating water from entering the filter cartridge and being discharged through two paths via the drain pipe 10b, thus preventing the formation of a circulating fluid. At the same time, the flow-concentrating component 30 can also rotate along with the stable circulating water. During the rotation, the brush 40 installed on it can also clean the filter screen by brushing, improving the filtration efficiency. Personnel only need to periodically open the slag discharge pipe 10c to remove particulate impurities, reducing operation and maintenance costs.

[0043] Specifically, such as Figure 2-5 As shown, in order to solve the problem of where and how particulate impurities settle, the filter cartridge 10 is mounted in the air by a support assembly 50. The support assembly 50 includes a high-level support and at least two low-level support to form at least three-point support. The filter cartridge 10 can be installed at an angle by the high and low-level support clamping, that is, the annular surface of the filter cartridge 10 has a certain angle with the horizontal surface, and the angle range is 0-10 degrees.

[0044] Furthermore, the high-level support includes a high-level bracket 51, with an arc-shaped tray 511 connected to its top and a rotatable positioning plate 52 connected to its bottom. The positioning plate 52 is fixed to the base surface by bolts or welding, adapting to different flat surface support scenarios and increasing installation stability. The low-level support includes a low-level bracket 53, with an arc-shaped tray 531 connected to its top. Rubber pads are also installed between the tray 511 and the tray 531 and the filter cartridge 10 to prevent vibration and friction damage to the filter cartridge 10. The line connecting the high and low points of the filter cylinder 10 is line one, and the lines connecting the inlet pipe 10a and the outlet pipe 10b to the filter cylinder 10 are line two. Line one is perpendicular to line two, and the slag discharge pipe 10c is located at the low point. By installing the filter cylinder 10 at an angle, a sedimentation space is provided for the low point of particulate impurities to collect, which facilitates the collection of particulate impurities in the slag discharge pipe 10c. The angle of inclination of the filter cylinder 10 is controlled, that is, the angle should not be too large, to avoid affecting the circulation of circulating water in the filter cylinder 10, that is, to reduce the gravitational potential energy that the circulation needs to overcome.

[0045] In detail, the advantages of the above connection point design are as follows: the circulating water enters the filter cylinder 10 upward through the inlet pipe 10a, and after passing the high point, it flows downward. When passing the filter screen 20 in the middle, it is divided into two parts under the action of pressure. One part is filtered by the filter screen 20 and discharged through the drain pipe 10b. The other part impacts the inner curved surface of the filter screen 20 and enters the pipe section at the low point, entraining the filtered particulate impurities into the filter cylinder 10 at the low point. Finally, under the action of gravity, it collects in the slag discharge pipe 10c at the lowest point. A control valve 10c1 is also installed on the slag discharge pipe 10c. The filtered particulate impurities are discharged by periodically opening the control valve 10c1. Conversely, if the circulating water first enters the low point section, it is not conducive to the deposition of particulate impurities.

[0046] like Figure 2-5As shown, the beam assembly 30 includes two valve bodies and a connecting rod 34 for connecting the two valve bodies. The valve bodies are unidirectional valve bodies, restricting the unidirectional flow of circulating water. The two valve bodies limit the flow direction of circulating water to flow from the inlet pipe 10a to the high point of the filter cartridge 10. After flowing, part of the water passes through the filter screen 20 and enters the outlet pipe 10b, while the other part flows continuously to the low point, where it mixes with the newly injected circulating water. This cycle repeats. The valve body includes a ring 31 and a valve disc 32 rotatably mounted on the ring 31. The ring 31 also has a protrusion 33 that restricts the valve disc 32 from rotating to one side. The rings 31 included in the two valve bodies are connected by the connecting rod 34, which is semi-circular. A brush 40 is installed on the outer wall of the ring 31. The brush 40 is connected to the ring 31 by adhesive or Velcro. When the circulating water is injected at a low speed, it flows along the filter... The upper and lower parts of the filter cylinder 10 are respectively connected to the inlet pipe 10a and the upper part of the filter cylinder 10, that is, the filter cylinder 10 on one side between the two valve bodies. The valve body at the lower position blocks the continuous flow of circulating water to the bottom, while the valve body at the higher position opens, allowing the circulating water to pass through and enter the filter cylinder 10 on the other side between the two valve bodies. After filling the entire filter cylinder 10, the circulating water is continuously injected at an accelerated rate. Under the action of its own kinetic energy, the circulating water flows upward into the filter cylinder 10. Under the action of the pressure of the circulating water, the valve discs 32 located at the upper and lower positions open forward in the direction of flow. The valve discs 32 are not fully open. Under the action of the circulation of the circulating water, the two ring bodies 31 are driven to rotate. During this process, the brushes 40 on the ring bodies 31 brush and remove the adsorbed particulate impurities on the inner curved surface of the filter screen 20 when they pass through it, further improving the cleaning efficiency of the adsorbed particles.

[0047] Another advantage of using valve bodies is that when the two valve bodies are located on both sides of the connection point between the drain pipe 10b and the filter cylinder 10, the circulating water between the two valve bodies can partially pass through the filter screen 20. If the two valve bodies are closed, the circulating water will not pass through the filter screen 20.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A recirculation filter apparatus, characterized by, The application relates to a filter device, which comprises the following components: a filter cylinder (10) in a ring shape, comprising an inlet pipe (10a) connected tangentially along the ring, a radial outer side connected discharge pipe (10b) and a bottom connected discharge residue pipe (10c); a filter screen (20) arranged at the communication port of the filter cylinder (10) and the discharge pipe (10b), and the inner side of the filter screen (20) is curved; a beam flow assembly (30) capable of restraining the one-way circulation of circulating water in the filter cylinder (10) and capable of rotating in the filter cylinder (10) along with the circulating water flow; and a brush (40) arranged on the beam flow assembly (30) and capable of grinding the inner side curve of the filter screen (20) along with the rotation of the beam flow assembly (30); the beam flow assembly (30) comprises two valve bodies and a connecting rod (34) connecting the two valve bodies, the valve body is a one-way valve body, the application further relates to a filter device, which comprises the following components: a ring body (31) and a valve clack (32) rotatably arranged on the ring body (31), and the ring body (31) is further provided with a protrusion (33) for limiting the rotation of the valve clack (32) to one side, and the ring bodies (31) of the two valve bodies are connected through the connecting rod; the connecting rod (34) is in a semicircular ring shape, and the brush (40) is arranged on the outer side wall of the ring body (31).

2. A recirculating filter according to claim 1, wherein, The application further relates to a filter device, which comprises the following components: a support assembly (50) comprising a high-position support, at least two low-position supports, the high-position support and the low-position support support the filter cylinder (10) to tilt the ring surface of the filter cylinder (10) to have a high-position point and a low-position point.

3. A recirculating filter according to claim 2, wherein, The tilt angle of the ring surface of the filter cylinder (10) is 0-10 degrees.

4. A recirculation filter device according to claim 3, wherein The high-position support comprises a high-position support frame (51), the top end of the high-position support frame (51) is connected with an arc-shaped toka one (511), and the bottom end of the high-position support frame (51) is rotatably connected with a positioning plate (52); the low-position support comprises a low-position support frame (53), and the top end of the low-position support frame (53) is connected with an arc-shaped toka two (531).

5. A recirculation filter device according to claim 4, wherein The connecting line of the high-position point and the low-position point of the filter cylinder (10) is connecting line one, the connecting line of the connecting points of the inlet pipe (10a) and the discharge pipe (10b) with the filter cylinder (10) is connecting line two, connecting line one is perpendicular to connecting line two, and the discharge residue pipe (10c) is located at the low-position point.

6. A recirculation filter device according to claim 5, wherein A control valve (10c1) is arranged on the discharge residue pipe (10c).

7. A recirculation filter according to claim 1 wherein, The two valve bodies limit the circulating water flow direction to be that part of the circulating water flowing from the inlet pipe (10a) to the high-position point of the filter cylinder (10) and then entering the discharge pipe (10b) through the filter screen (20) and the other part entering the low-position point to continuously flow.

8. The recirculating filter of claim 1, wherein, The filter screen (20) is arranged in the discharge pipe (10b) through the clamping seat (10b1).

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