Self-cleaning chemical filter device

Abstract

The utility model discloses a self-cleaning chemical filter device, which belongs to the technical field of filters and comprises a shell, a rotary filter component, a collecting cylinder and a deslagging component, and a liquid inlet pipe and a liquid outlet pipe are mounted on the side wall of the shell. The rotary filtering assembly comprises a mounting ring rotationally arranged in the shell and a plurality of filtering plates rotationally arranged on the mounting ring, and under fluid impact, the filtering plates close to the liquid inlet pipe can be opened to achieve liquid inlet, and the filtering plates close to the liquid outlet pipe can be closed to conduct filtering; the collecting barrel is mounted below the shell and is used for collecting filtered impurities; the slag discharging assembly is arranged at a slag outlet in the lower portion of the collecting cylinder and used for discharging impurities. According to the self-cleaning chemical filter device, through rotation of the mounting ring and deflection design of the filter plate, the dynamic filtering process is realized, and through continuous rotation of the mounting ring, the working state of the filter plate is continuously changed, so that the problem of blockage caused by long-time repeated filtering of a single filter plate is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and in particular relates to a self-cleaning chemical filter device. Background Art

[0002] As a small and efficient device specially used to remove solid impurities in liquids, pipeline filters have a wide range of core applications in industries involving the transmission of weakly acidic media, such as chemical and petroleum. The working principle is that the fluid first flows into the filter cartridge area through the main pipeline. During this process, the filter cartridge acts as a key separation barrier, effectively blocking and retaining solid impurity particles, while the purified fluid passes through the filter cartridge smoothly and flows out purely from the outlet of the filter, ensuring the purity and stability of downstream processes or products.

[0003] In the oil transportation sector, pipeline filters play an indispensable role, often deployed at key nodes such as wellheads, pumping stations, oil production stations, or the starting point of pipelines. These filters effectively remove impurities, rock fragments, gravel, and other potential hazards from the oil, thereby ensuring excellent oil quality and the safe operation of transportation equipment. However, with the continuous unidirectional flow of fluid, impurities cannot be removed in a timely manner, and the inflow end of the filter element is prone to clogging. Once clogging occurs, the filter element is usually required to replace the filter element to restore filtration efficiency. This maintenance measure is accompanied by a temporary interruption of fluid transmission, especially in the highly coordinated and multi-linked complex system of oil extraction and transportation. The stagnation of any link will trigger a chain reaction, leading to the suspension of the entire operation chain. This means that during the time it takes for the filter element to be replaced, not only must the extraction operation be suspended, but a large amount of manpower and mechanical resources are also idle, resulting in significant economic losses and time costs for the company.

[0004] Therefore, we propose a self-cleaning chemical filter device to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that chemical filters are easily clogged, resulting in large economic losses and time costs when the machine is stopped for cleaning or replacing filter elements, and proposes a self-cleaning chemical filter device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A self-cleaning chemical filter device comprises a housing, a liquid inlet pipe and a liquid outlet pipe being mounted on the side wall of the housing, and further comprising:

[0008] The rotary filter assembly includes a mounting ring rotatably mounted within the housing and a plurality of filter plates rotatably mounted on the mounting ring. Under fluid impact, the filter plates near the liquid inlet pipe can be opened to allow liquid to enter, while the filter plates near the liquid outlet pipe are closed for filtering.

[0009] The collecting cylinder is installed under the shell and is used to collect the filtered impurities;

[0010] The slag discharge assembly is arranged at the slag outlet below the collecting cylinder and is used to discharge impurities.

[0011] Preferably, the mounting ring is fitted with the inner wall of the housing, and a plurality of evenly distributed openings are provided on the side wall of the mounting ring, and the openings are adapted to the size of the filter plate.

[0012] Preferably, the filter plate includes a mounting frame, a filter screen and a rotating shaft, the filter screen is installed in the mounting frame, the rotating shaft is fixed to one side of the mounting frame and is rotatably connected to the mounting ring, and a torsion structure is provided between the rotating shaft and the mounting ring.

[0013] Preferably, the filter plate is arc-shaped and fits the inner side of the mounting ring, and the inner side of the opening is provided with an oblique angle adapted to the end face of the filter plate.

[0014] Preferably, the torsion structure includes a torsion spring fixedly mounted on the rotating shaft, and the end of the torsion spring extends and is fixed on the inner side wall of the mounting ring.

[0015] Preferably, a plurality of radially arranged baffles are fixedly installed in the mounting ring, and the baffles have a hollow area on the side close to the mounting ring, and the filter plate does not exceed the hollow area when deflected.

[0016] Preferably, the collecting cylinder is conical.

[0017] Preferably, the slag discharge assembly includes a slag discharge pipe fixedly arranged at the slag outlet at the bottom end of the collecting barrel, the bottom end of the slag discharge pipe is threadedly connected to an end cover, the top of the end cover is fixedly installed with a mounting rod, and sealing disk 1 and sealing disk 2 are sequentially arranged on the mounting rod, and a slag storage chamber is formed between the sealing disk 1 and the sealing disk 2, the sealing disk 1 is located in the collecting barrel, and the sealing disk 2 is located in the slag discharge pipe, and the sealing disk 1 and the sealing disk 2 can both slide in a sealed manner on the slag discharge pipe.

[0018] To sum up, the technical effects and advantages of the utility model are as follows: the self-cleaning chemical filter device realizes a dynamic filtration process through the rotation of the mounting ring and the deflection design of the filter plate. Under the impact of the fluid, the filter plate close to the liquid inlet pipe can automatically deflect and open, allowing the fluid to smoothly enter the mounting ring, while the filter plate close to the liquid outlet pipe remains in a closed state for filtering, effectively intercepting impurities. Through the continuous rotation of the mounting ring, the working state of the filter plate is continuously changed, avoiding the blockage problem caused by long-term repeated filtration of a single filter plate, significantly improving the filtration efficiency and system stability. When the filter plate in the filtering state switches to the liquid inlet end with the rotation of the mounting ring, the fluid will form a backflushing effect, automatically dredge the filter plate, effectively remove the filter residue and impurities attached to the filter plate, maintain the patency of the filter plate, and extend the service life of the filter plate.

[0019] By setting up a slag discharge device, the filter residue accumulated in the collection cylinder can be collected and cleaned without stopping the fluid transportation. This not only improves the continuity of the filtration operation, but also significantly reduces the production interruption time caused by shutdown for cleaning, thereby improving the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the transverse cross-sectional structure of the utility model;

[0023] Figure 4 This is a schematic structural diagram of the mounting ring in the present utility model;

[0024] Figure 5 It is a structural schematic diagram of the filter plate in this utility model.

[0025] In the figure: 1. Housing; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 2. Rotary filter assembly; 21. Mounting ring; 211. Opening; 22. Filter plate; 221. Mounting frame; 222. Filter screen; 223. Rotating shaft; 224. Torsion spring; 23. Baffle; 231. Hollow area; 3. Collecting cylinder; 4. Slag discharge assembly; 41. Slag discharge pipe; 42. End cover; 43. Mounting rod; 44. Sealing disk 1; 45. Sealing disk 2. DETAILED DESCRIPTION

[0026] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] Reference Figure 1-5A self-cleaning chemical filter device includes a shell 1, which is cylindrical. A liquid inlet pipe 11 and a liquid outlet pipe 12 are installed on the side wall of the shell 1. The liquid inlet pipe 11 and the liquid outlet pipe 12 are arranged along the tangential direction of the shell 1. In this embodiment, the liquid inlet pipe 11 and the liquid outlet pipe 12 are perpendicular to each other. After the fluid enters from the liquid inlet pipe 11, it passes through the shell 1 and is discharged through the liquid outlet pipe 12.

[0028] It also includes a rotary filter component 2, a collecting cylinder 3 and a residue discharge component 4. The fluid is continuously filtered through the rotary filter component 2, and the position of the rotary filter component 2 is constantly changing, so it is not easy for the filter residue to be blocked. The filtered filter residue is precipitated and collected through the collecting cylinder 3. Finally, after the filter residue accumulates to a certain amount, it can be discharged to the outside through the residue discharge component 4.

[0029] The rotary filter assembly 2 includes a mounting ring 21 rotatably arranged in the outer shell 1 and a plurality of filter plates 22 rotatably arranged on the mounting ring 21. The mounting ring 21 fits against the inner wall of the outer shell 1, and a plurality of evenly distributed openings 211 are provided on the side wall of the mounting ring 21. The openings 211 are adapted to the size of the filter plates 22. Under normal circumstances, the filter plates 22 close the openings 211. Under fluid impact, the filter plates 22 close to the liquid inlet pipe 11 are deflected toward the mounting ring 21 by the fluid impact and can be opened to allow liquid to enter. The filter plates 22 close to the liquid outlet pipe 12 remain in a closed state with the openings 211 for filtering, and the mounting ring 21 will rotate under fluid impact. Therefore, the positions of the filter plates 22 deflected for liquid entry and the filter plates 22 for filtering will be continuously switched, so that a single filter plate 22 will not be in a filtering state for a long time, thereby avoiding clogging.

[0030] Reference Figure 1-5 The filter plate 22 includes a mounting frame 221, a filter screen 222 and a rotating shaft 223. The filter screen 222 is mounted in the mounting frame 221. The rotating shaft 223 is fixed to one side of the mounting frame 221 and is rotatably connected to the mounting ring 21. A torsion structure is provided between the rotating shaft 223 and the mounting ring 21. Under the action of the torsion structure, the filter plate 22 remains in contact with the inner wall of the mounting ring 21. Under the impact of the fluid, the filter plate 22 corresponding to the liquid inlet pipe 11 overcomes the resistance of the torsion structure and deflects toward the inside of the mounting ring 21 to form a channel. The fluid directly enters the mounting ring 21 through the channel with less resistance, and then passes through the filter plate 22 corresponding to the liquid outlet pipe 12 to complete the filtration. Among them, the filter residue is filtered on the inner side of the mounting ring 21. When the filter plate 22 is in the position of the liquid inlet pipe 11 in the switching position, the impact of the fluid on the filter plate 22 realizes a backwash effect, flushing out the filter residue attached to the filter screen 222, maintaining the permeability of the filter screen 222, and ensuring a good filtering effect.

[0031] The filter plate 22 is arc-shaped and fits the inner side of the mounting ring 21. The inner side of the opening 211 is provided with an oblique angle adapted to the end face of the filter plate 22. The oblique angle can ensure that the filter plate 22 remains in contact with the opening 211 and will not prevent the filter plate 22 from deflecting toward the inner side of the mounting ring 21.

[0032] The torsion structure includes a torsion spring 224 fixedly mounted on the rotating shaft 223. The end of the torsion spring 224 extends and is fixed to the inner wall of the mounting ring 21. When the filter plate 22 is deflected by the impact of the fluid, the rotating shaft 223 rotates synchronously to enable the torsion spring 224 to store elastic potential energy and reset after the fluid impact force is lost.

[0033] A plurality of radially arranged baffles 23 are fixedly provided in the mounting ring 21. The baffle 23 has a hollow area 231 on the side close to the mounting ring 21. The deflection of the filter plate 22 does not exceed the hollow area 231. Therefore, the channel formed by the deflection of the filter plate 22 will not be blocked by the baffle 23 when the fluid flows through. The fluid passes through the hollow area 231 and impacts the baffle 23 at the adjacent position, driving the mounting ring 21 to rotate, thereby realizing automatic driving of the mounting ring 21 and ensuring that each filter plate 22 can achieve automatic position switching.

[0034] The collecting cylinder 3 is installed below the outer shell 1 and is used to collect the filtered impurities. The collecting cylinder 3 is conical. Since the liquid inlet pipe 11 is installed in the tangential direction, a vortex is formed in the collecting cylinder 3 after the fluid enters. After the vortex is formed in the conical collecting cylinder 3, the filter residue will be concentrated at the bottom center of the collecting cylinder 3 for easy collection.

[0035] Reference Figure 2 The slag discharge component 4 is arranged at the slag outlet below the collecting cylinder 3 for discharging impurities. It can collect and clean the filter residue accumulated in the collecting cylinder 3 without stopping the fluid transportation, which not only improves the continuity of the filtering operation, but also significantly reduces the production interruption time caused by shutdown for cleaning, thereby improving the overall production efficiency.

[0036] The slag discharge assembly 4 includes a slag discharge pipe 41 fixedly arranged at the slag outlet at the bottom end of the collecting barrel 3. The bottom end of the slag discharge pipe 41 is threadedly connected with an end cover 42. Under normal circumstances, the end cover 42 is screwed tightly to the slag discharge pipe 41. A mounting rod 43 is fixedly installed on the top of the end cover 42. A sealing disc 1 44 and a sealing disc 2 45 are sequentially arranged on the mounting rod 43. A slag storage chamber is formed between the sealing disc 1 44 and the sealing disc 2 45. The sealing disc 1 44 is located in the collecting barrel 3, and the sealing disc 2 45 is located in the slag discharge pipe 41. The filter residue accumulated at the bottom of the cylinder 3 enters the slag storage chamber and is concentrated in the slag discharge pipe 41. The sealing disk 1 44 and the sealing disk 2 45 can both slide in a sealed manner on the slag discharge pipe 41. When discharging slag, the end cover 42 is unscrewed from the slag discharge pipe 41 and pushed outward until the sealing disk 2 45 is separated from the slag discharge pipe 41, and the sealing disk 1 44 remains in the slag discharge pipe 41. At this time, the sealing disk 1 44 blocks the slag discharge pipe 41, but the slag storage chamber is exposed, and the filter residue in the slag storage chamber can be cleaned up. After cleaning, the end cover 42 can be closed.

[0037] Working principle:

[0038] When in use, the fluid enters from the liquid inlet pipe 11, passes through the shell 1 and is discharged through the liquid outlet pipe 12. Under the impact of the fluid, the filter plate 22 close to the liquid inlet pipe 11 is deflected toward the mounting ring 21 by the fluid impact and can be opened to realize liquid inlet. The filter plate 22 close to the liquid outlet pipe 12 remains in a closed state with the opening 211 for filtering, and the mounting ring 21 will rotate under the impact of the fluid. Therefore, the positions of the filter plate 22 deflected for liquid inlet and the filter plate 22 for filtering are continuously switched, so that a single filter plate 22 will not be in the filtering state for a long time, avoiding clogging. Under the impact of the fluid, the filter plate 22 corresponding to the liquid inlet pipe 11 overcomes the resistance of the torsional structure and moves toward the mounting ring 2 1 is deflected on the inside to form a channel, and the fluid directly enters the installation ring 21 from the channel with smaller resistance, and then passes through the filter plate 22 corresponding to the liquid outlet pipe 12 to complete the filtration, wherein the filter residue is filtered on the inner side of the installation ring 21. When the filter plate 22 is at the position of the liquid inlet pipe 11 in the switching position, the impact of the fluid on the filter plate 22 realizes a backwash effect, flushing out the filter residue attached to the filter screen 222, maintaining the permeability of the filter screen 222, and ensuring a good filtering effect. The fluid impact forms a vortex in the collecting cylinder 3. After the vortex is formed in the conical collecting cylinder 3, the filter residue will be concentrated at the bottom center of the collecting cylinder 3. The filter residue accumulated at the bottom of the collecting cylinder 3 enters the residue storage chamber.

[0039] When discharging slag, unscrew the end cover 42 out of the slag discharge pipe 41 and push it outward until the sealing disk 2 45 is separated from the slag discharge pipe 41, and the sealing disk 1 44 remains in the slag discharge pipe 41. At this time, the sealing disk 1 44 blocks the slag discharge pipe 41, but the slag storage chamber is exposed, and the filter residue in the slag storage chamber can be cleaned out. After cleaning, close the end cover 42.

Claims

1. A self-cleaning chemical filter device, comprising a housing (1), characterized in that: The side wall of the housing (1) is provided with a liquid inlet pipe (11) and a liquid outlet pipe (12), and further comprises: A rotary filter assembly (2) comprises a mounting ring (21) rotatably mounted in the housing (1) and a plurality of filter plates (22) rotatably mounted on the mounting ring (21); under fluid impact, the filter plates (22) close to the liquid inlet pipe (11) can be opened to allow liquid to enter, while the filter plates (22) close to the liquid outlet pipe (12) are closed to allow filtration; A collecting cylinder (3) is installed below the housing (1) and is used to collect filtered impurities; The slag discharge assembly (4) is arranged at the slag discharge port below the collecting cylinder (3) and is used for discharging impurities.

2. A self-cleaning chemical filter device according to claim 1, characterized in that: The mounting ring (21) is fitted with the inner wall of the outer shell (1), and a plurality of evenly distributed openings (211) are provided on the side wall of the mounting ring (21), and the openings (211) are adapted to the size of the filter plate (22).

3. A self-cleaning chemical filter device according to claim 2, characterized in that: The filter plate (22) comprises a mounting frame (221), a filter screen (222) and a rotating shaft (223); the filter screen (222) is mounted in the mounting frame (221); the rotating shaft (223) is fixed to one side of the mounting frame (221) and is rotatably connected to the mounting ring (21); a torsion structure is provided between the rotating shaft (223) and the mounting ring (21).

4. A self-cleaning chemical filter device according to claim 3, characterized in that: The filter plate (22) is arc-shaped and fits the inner side of the mounting ring (21), and the inner side of the opening (211) is provided with an oblique angle adapted to the end face of the filter plate (22).

5. A self-cleaning chemical filter device according to claim 3, characterized in that: The torsion structure comprises a torsion spring (224) fixedly mounted on the rotating shaft (223), wherein the end of the torsion spring (224) extends and is fixed to the inner side wall of the mounting ring (21).

6. A self-cleaning chemical filter device according to claim 1, characterized in that: A plurality of radially arranged baffles (23) are fixedly disposed in the mounting ring (21), and the baffles (23) have a hollow area (231) on one side close to the mounting ring (21), and the filter plate (22) does not exceed the hollow area (231) when deflected.

7. A self-cleaning chemical filter device according to claim 1, characterized in that: The collecting cylinder (3) is conical.

8. The self-cleaning chemical filter device according to claim 1, characterized in that: The slag discharge assembly (4) includes a slag discharge pipe (41) fixedly arranged at the slag outlet at the bottom end of the collecting barrel (3), the bottom end of the slag discharge pipe (41) is threadedly connected to an end cover (42), the top of the end cover (42) is fixedly installed with a mounting rod (43), and a sealing disc 1 (44) and a sealing disc 2 (45) are sequentially arranged on the mounting rod (43), and a slag storage chamber is formed between the sealing disc 1 (44) and the sealing disc 2 (45), the sealing disc 1 (44) is located in the collecting barrel (3), and the sealing disc 2 (45) is located in the slag discharge pipe (41), and the sealing disc 1 (44) and the sealing disc 2 (45) can both slide in a sealed manner on the slag discharge pipe (41).

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