Filter cap with self-cleaning function

Abstract

The invention discloses a filter cap with a self-cleaning function, which is characterized in that a rectangular access short section of the filter cap is arranged on the outer wall of a barrel and communicated with an inner cavity of the barrel, side covers are hermetically arranged at two ends of the barrel, sliding grooves are formed in the inner side surfaces of the side covers along the circumferential direction, stepped through holes are formed in the centers of the side covers, a limiting shaft is centrally arranged in the barrel, and the shaft end is positioned in the stepped through holes of the side covers; shaft necks at the two ends of the limiting shaft extend out of step through holes of the side covers and are fastened through stop pieces and locking nuts, a rotary inner cavity is formed between an outer ring of the limiting shaft and the inner wall of the barrel, the rotary cleaning rolling body is arranged in the rotary inner cavity, shaft heads at the two ends of the rotary cleaning rolling body are located in sliding grooves of the side covers, and a plurality of water outlet holes are formed in the outer wall of the upper portion of the barrel at intervals in the horizontal direction. And the connecting short section is arranged at an inlet of the rectangular access short section. While the filter cap performs spraying action, self-cleaning and descaling are performed on the inner cavity and the water outlet hole of the filter cap, so that the water yield meets the designed working condition standard, the associated problem of shortage of water to be purified in the subsequent purification process is solved, and the operation working condition of equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, and in particular to a filter cap with a self-cleaning function. Background Technology

[0002] Usually, such as Figure 1 As shown, the filter cap 1 is a hollow sphere with several water outlet holes 11 on its surface. The hollow sphere is connected to the filter cap connecting section 2 and the coil connecting section 3. Recycled production water is injected into the filter cap 1 through the coil and sprayed through the several water outlet holes 11, thus having a spraying function.

[0003] Most of these filter caps are made of ordinary carbon steel. The recycled production water contains various chemical components, which easily corrode and scale, causing frequent blockage of the outlet holes. This reduces the spraying function, resulting in insufficient water output and a serious shortage of purified water. Furthermore, the water flowing into the filter cap contains particulate or irregularly shaped small impurities, which easily clog the outlet holes. At the same time, the internal and external threads of the filter cap connecting sections and coil connecting sections made of ordinary materials corrode under the long-term influence of the recycled production water containing chemical components. This causes the secure connection to loosen, allowing the filter cap to fall off under the impact of pressurized water. This shortens the service life of equipment components, partially loses the initial filtration effect, and reduces the service life of the filtration equipment.

[0004] When the filter cap exhibits the aforementioned abnormalities, the traditional maintenance method involves removing the manhole on the filter tank, allowing workers to enter the tank, and then disassembling the filter cap and related components for repair. This results in high maintenance costs and cumbersome and inefficient maintenance procedures. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a filter cap with a self-cleaning function. While spraying, the filter cap can self-clean and descale the inner cavity and water outlet, so that the water output meets the design operating conditions, solve the problem of water shortage in the subsequent purification process, and improve the operating conditions of the equipment.

[0006] To solve the above-mentioned technical problems, the present invention provides a filter cap with a self-cleaning function, comprising a cylinder, side covers, a rectangular access section, a limiting shaft, a rotating cleaning roller, and a connecting section. The rectangular access section is disposed on the outer wall of the cylinder along its length and communicates with the inner cavity of the cylinder. The side covers are respectively sealed at both ends of the cylinder, and the inner surface of the side covers is provided with a groove along the circumferential direction and a stepped through hole in the center. The limiting shaft is centrally disposed in the cylinder along its length, and the shaft end is located in the stepped through hole of the side cover. The journals at both ends of the limiting shaft extend out of the stepped through hole of the side cover and are fastened by a stop plate and a locking nut. A rotating inner cavity is formed between the outer ring of the limiting shaft and the inner wall of the cylinder. The rotating cleaning roller is disposed in the rotating inner cavity, and the shaft ends are located in the groove of the side cover. The upper outer wall of the cylinder on the other side of the rectangular access section is provided with a plurality of water outlet holes spaced horizontally. The connecting section is disposed at the inlet of the rectangular access section.

[0007] Furthermore, the diameter of the plurality of water outlet holes increases sequentially from bottom to top.

[0008] Furthermore, the inner wall of the inlet of the rectangular access section is provided with slots at intervals. One end of the connecting section is a rectangular opening and the other end is a round opening with internal threads. The outer wall of the rectangular opening is provided with push-pull blocks at intervals. The rectangular opening of the connecting section is inserted into the inlet of the rectangular access section, and the push-pull blocks are engaged in the slots. The round opening of the connecting section is connected to the water inlet coil through threads.

[0009] Furthermore, the outer ring of the rotating cleaning roller is provided with cleaning fins spaced apart along the axial direction.

[0010] Furthermore, the gap between the shaft ends of the rotating cleaning roller and the side cover groove is 0.5mm.

[0011] Furthermore, the cleaning fins are 3mm thick, 100mm high, and have the same length as the rotating cleaning roller, and the gap between the cleaning fins and the inner wall of the cylinder is 0.5mm.

[0012] Because the filter cap with self-cleaning function of the present invention adopts the above-mentioned technical solution, that is, the rectangular access short section of the filter cap is provided on the outer wall of the cylinder along the length direction of the cylinder and connects to the inner cavity of the cylinder. The side cover is respectively sealed at both ends of the cylinder. The inner side of the side cover is provided with a sliding groove along the circumferential direction and a stepped through hole in the center. The limiting shaft is centrally located in the cylinder along the length direction, and the shaft end is located in the stepped through hole of the side cover. The journals at both ends of the limiting shaft extend out of the stepped through hole of the side cover and are fastened by a stop plate and a locking nut. A rotating inner cavity is formed between the outer ring of the limiting shaft and the inner wall of the cylinder. The rotating cleaning rolling element is provided in the rotating inner cavity, and the shaft ends are located in the sliding groove of the side cover. The upper outer wall of the cylinder on the other side of the rectangular access short section is provided with several water outlet holes at intervals along the horizontal direction. The connecting short section is provided at the inlet of the rectangular access short section. While spraying, this filter cap self-cleans and descales its inner cavity and outlet, ensuring that the water output meets the design operating conditions, solving the problem of water shortage in subsequent purification processes, and improving the equipment's operational performance. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of a traditional filter cap.

[0014] Figure 2 This is a schematic diagram of the filter cap structure with self-cleaning function of the present invention; Figure 3 This is a cross-sectional schematic diagram of the filter cap of this filter; Figure 4 This is a schematic diagram showing the connection between the inner cylinder of the filter cap and the rectangular access section. Figure 5 This is a schematic diagram of the limiting shaft in the filter cap of this filter; Figure 6 This is a schematic diagram of the rotating cleaning roller and cleaning fin structure in the filter cap of this filter; Figure 7 This is a schematic diagram of the side cover in the filter cap of this filter; Figure 8 This is a schematic diagram of the connecting section in the filter cap of this filter. Detailed Implementation

[0015] Implementation, for example Figures 2 to 8As shown, the filter cap with self-cleaning function of the present invention includes a cylindrical body 4, side covers 5, a rectangular access section 6, a limiting shaft 7, a rotating cleaning rolling element 8, and a connecting section 9. The rectangular access section 6 is disposed along the length direction of the cylindrical body 4 on the outer wall of the cylindrical body 4 and communicates with the inner cavity of the cylindrical body 4. The side covers 5 are respectively sealed at both ends of the cylindrical body 4, and the inner surface of the side covers 5 is provided with a sliding groove 51 along the circumferential direction and a stepped through hole 52 in the center. The limiting shaft 7 is centrally disposed in the cylindrical body 4 along the length direction, and the shaft end is located at the stepped through hole of the side cover 5. Hole 52, the journals 71 at both ends of the limiting shaft 7 extend out of the stepped through hole 52 of the side cover 5 and are fastened by the stop plate 72 and the locking nut 73. The outer ring of the limiting shaft 7 forms a rotary inner cavity 41 between the outer ring of the limiting shaft 7 and the inner wall of the cylinder 4. The rotating cleaning rolling element 8 is disposed in the rotary inner cavity 41, and the two end shafts 81 are located in the sliding groove 51 of the side cover 5. The upper outer wall of the cylinder 4 on the other side of the rectangular access section 6 is provided with a plurality of water outlet holes 42 at horizontal intervals. The connecting section 9 is disposed at the inlet of the rectangular access section 6.

[0016] Preferably, the diameter of the plurality of water outlet holes 42 increases sequentially from bottom to top.

[0017] Preferably, the inner wall of the inlet of the rectangular access section 6 is provided with slots 61 at intervals. One end of the connecting section 9 is a rectangular opening 91 and the other end is a round opening 92 with internal threads. The outer wall of the rectangular opening 91 is provided with push-pull blocks 93 at intervals. The rectangular opening 91 of the connecting section 9 is inserted into the inlet of the rectangular access section 6, and the push-pull blocks 93 are engaged in the slots 61. The round opening 92 of the connecting section 9 is connected to the water inlet coil 94 by threads.

[0018] Preferably, the outer ring of the rotating cleaning rolling body 8 is provided with cleaning fins 82 spaced apart along the axial direction.

[0019] Preferably, the gap between the two ends of the rotating cleaning roller 8 and the side cover groove 51 is 0.5mm. This ensures that the rotating cleaning roller rotates and slides smoothly within the groove of the rotation path.

[0020] Preferably, the cleaning fins 82 have a thickness of 3mm, a height of 100mm, and a length consistent with that of the rotating cleaning roller 8. The gap between the cleaning fins 82 and the inner wall of the cylinder 4 is 0.5mm, so as to achieve the purpose of repeatedly cleaning the water outlet and the dirt on the inner wall of the cylinder.

[0021] The filter cap's cylindrical body and rectangular access section form a "whistle" shape. The overall structure is made of plastic steel, scientifically and effectively assembling the cylindrical body, limiting shaft, and rotating cleaning roller structure into a single unit, forming a self-cleaning filter cap with a rotating path. Utilizing the pressure of the water to be filtered, input through the inlet coil, connecting section, and rectangular access section, the rotating cleaning roller is propelled forward within the rotating cavity of the cylindrical body, performing a double-cycle 360° rotation (the rotating cleaning roller rotates 360° around the rotating cavity as a whole, and the rotating cleaning roller itself flips 360° under the pressure of the water, hence the term 360° double-cycle rotation). This achieves continuous cyclic cleaning of the inner wall of the cylindrical body and the water outlet. Cleaning fins are installed on the outer ring of the rotating cleaning roller to improve the cleaning effect, ensuring the filter cap remains unobstructed under complex water conditions and guaranteeing optimal stability for subsequent purification processes.

[0022] The size of the filter cylinder is designed according to the amount of water to be filtered (the volume depends on the working conditions). To overcome the design defects of the original hollow spherical filter cap, the filter cap is designed in the shape of a "whistle". The rectangular inlet of the "whistle" shaped filter cap has a pressurizing effect, and the spray surface is directional, which can spray to the designated filter media area. The "whistle" shaped filter cap also has a self-cleaning function (which is beneficial for the setting of the rotation path).

[0023] The original circular tubular inlet of the hollow spherical filter cap is redesigned into a rectangular access section with a rectangular inlet channel. This results in a wider inlet surface, generating stronger driving force and causing the rotating cleaning element to perform a 360° double-circulation rotation within the rotating cavity of the cylinder. Four to six rectangular slots are fabricated on the inner wall of the rectangular inlet channel of the rectangular access section for easy connection with the connecting section. A push-pull block is installed on the outer ring of the connecting section, ensuring that the push-pull block engages securely within the rectangular slot and remains firmly in place, guaranteeing the reliable connection between the rectangular access section and the connecting section. The connecting section is connected to the inlet coil via threads.

[0024] A limiting shaft is installed inside the filter cap cylinder. The position of the limiting shaft is controlled by the stepped through holes of the two side covers and is located at the center of the cylinder. At this time, the limiting shaft and the inner wall of the cylinder form a rotating inner cavity, which is the space for the rotating cleaning rolling element to perform a 360° double-cycle rotation action.

[0025] Slide grooves are set along the circumference on the inner surfaces of the two side covers. The width and depth of the slide grooves are both 10mm, and can be adjusted according to the specific working conditions. It is required that the slide grooves of the two side covers be in the same position to form a symmetrical relationship and jointly form a 360° rotation path for the rotating cleaning rolling body.

[0026] The rotary cleaning roller is made of hollow cylindrical plastic steel, with 8mm wall thickness at both ends. The roller cleans the inner wall of the cylinder and the water outlet through a 360° double-circulation rotation, removing impurities and achieving the cleaning purpose. To improve the cleaning effect, several axial cleaning fins are fabricated on the surface of the rotary cleaning roller. These fins are 3mm thick, 100mm high, and the same length as the rotary cleaning roller. All cleaning fins have chamfered outer edges.

[0027] The outer diameter of the limiting shaft is 30mm (the outer diameter of the limiting shaft can be selected based on factors such as the design of the rotating inner cavity space and the pressure of the flowing water). The limiting shaft is provided with journals with external threads at both ends, and the journal diameter is 8mm (the size can also be changed depending on the specific application).

[0028] The water outlets are arranged in an orderly fashion from bottom to top on the cylinder wall, with the outlet diameters increasing from small to large. The diameter is determined by the optimal operating conditions of the equipment (generally using diameters of Ø6mm, Ø10mm, and Ø14mm). This series of orifice diameters allows the water sprayed from a distance to cover the filter media in an orderly, layered manner, enabling various multi-layered filter media to better utilize their respective filtration advantages. Another function is to gradually depressurize the water within the rotating inner cavity, allowing the rotating cleaning elements to smoothly pass through the highest point of the cylinder under the rotational force of the pressurized water, and then enter the non-highest point of the rotating inner cavity for the next round of rotation, simultaneously performing a second cleaning operation.

[0029] The connecting section is made of plastic steel and features a deformable design. It has a rectangular opening and a round opening at both ends. The round opening of the connecting section is threaded to the inlet coil, and the rectangular opening matches the rectangular access section. They are connected by a slot and a locking block.

[0030] The pressurized water entering the rotating inner cavity of the cylinder quickly pushes the rotating cleaning roller to make a 360° circumferential rotation in the groove of the rotating path. At the same time, the cleaning fins make a 360° rapid rotation under the impact of the water to be filtered with fluctuating pressure. At this time, the rotating cleaning roller as a whole makes a double 360° circumferential rotation to remove dirt from the inner wall of the cylinder.

[0031] When the rotating cleaning element reaches the water outlet position, the rotation speed decreases as the diameter of the water outlet changes. At this time, the cleaning fins perform scraping descaling on the water outlet, improving the cleaning effect.

[0032] When the rotating cleaning roller reaches the highest point of the cylinder, it quickly slides past the highest point under the pressure of the water to be filtered and its own weight, and flows into the non-highest point of the rotating inner cavity to start the next round of rotation, which is also a second cleaning operation. With the continuous rotation of the rotating cleaning roller, the filter cap is self-cleaned.

Claims

1. A filter cap with a self-cleaning function, characterized in that: The device includes a cylinder, side covers, a rectangular access section, a limiting shaft, rotating cleaning rollers, and a connecting section. The rectangular access section is located on the outer wall of the cylinder along its length and connects to the inner cavity of the cylinder. The side covers are respectively sealed at both ends of the cylinder, and the inner surface of the side covers has a groove along the circumferential direction and a stepped through hole in the center. The limiting shaft is centrally located in the cylinder along its length, and the shaft end is located in the stepped through hole of the side cover. The journals at both ends of the limiting shaft extend out of the stepped through hole of the side cover and are fastened by a stop plate and a locking nut. A rotating inner cavity is formed between the outer ring of the limiting shaft and the inner wall of the cylinder. The rotating cleaning rollers are located in the rotating inner cavity, and the shaft ends are located in the groove of the side cover. The upper outer wall of the cylinder on the other side of the rectangular access section has several water outlet holes spaced horizontally. The connecting section is located at the inlet of the rectangular access section.

2. The filter cap with self-cleaning function according to claim 1, characterized in that: The diameter of the plurality of water outlet holes increases sequentially from bottom to top.

3. The filter cap with self-cleaning function according to claim 1 or 2, characterized in that: The inner wall of the rectangular access section is provided with slots at intervals. One end of the connecting section is a rectangular opening and the other end is a round opening with internal threads. The outer wall of the rectangular opening is provided with push-pull blocks at intervals. The rectangular opening of the connecting section is inserted into the inlet of the rectangular access section, and the push-pull blocks are engaged in the slots. The round opening of the connecting section is connected to the water inlet coil through threads.

4. The filter cap with self-cleaning function according to claim 3, characterized in that: The outer ring of the rotating cleaning roller is provided with cleaning fins spaced apart along the axial direction.

5. The filter cap with self-cleaning function according to claim 3, characterized in that: The gap between the two ends of the rotating cleaning roller and the side cover groove is 0.5mm.

6. The filter cap with self-cleaning function according to claim 4, characterized in that: The cleaning fins are 3mm thick, 100mm high, and have the same length as the rotating cleaning roller. The gap between the cleaning fins and the inner wall of the cylinder is 0.5mm.

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