Self-cleaning filter

Abstract

The self-cleaning filter comprises a shell, a cover body is arranged at the top of the shell, a water inlet pipe and a blow-off pipe are arranged at the bottom of the shell, a water outlet pipe is arranged at the top of the side wall of the shell, and a connecting seat extending into the shell and in threaded connection with the shell is arranged at the bottom of the cover body; a filter basket suspended in the shell is fixed at the bottom of the connecting seat through a connecting mechanism, a circle of fixing plate sleeving the filter basket is arranged in the shell below the water outlet pipe, a circle of buoyancy plate I sleeves the filter basket below the fixing plate, and a pollution discharge mechanism corresponding to the water inlet pipe is arranged at the bottom in the filter basket. And a buoyancy plate II through which the connecting mechanism passes is also arranged in the filter basket above the pollution discharge mechanism. According to the filter, liquid can be filtered, and meanwhile, the interior of the filter can be self-cleaned through residual liquid in the filter after the filter is used.

Description

Technical Field

[0001] The invention relates to the technical field of filter devices, in particular to a self-cleaning filter. Background Art

[0002] At present, basket filters are filters used on oil or other liquid pipelines to filter debris in the pipelines. The filter hole area is 2-3 times larger than the diameter of the pipe area, and the filter screen is shaped like a basket. The basket filter is mainly composed of inlet and outlet pipes, cylinders, filter baskets, flanges, flange covers and fasteners. When the liquid passes through the cylinder and enters the filter basket, the solid impurity particles are blocked in the filter basket, and the clean liquid is discharged from the outlet of the filter. When cleaning is required, unscrew the screw plug at the bottom of the cylinder, drain the liquid, remove the flange cover, take out the filter basket from the cylinder, clean it, and then reinstall it.

[0003] Regarding the above-mentioned related technologies: the flange cover is usually fixed to the cylinder body with multiple bolts, which makes disassembly and installation more troublesome, making it inconvenient to take out the filter basket for thorough cleaning. At the same time, since the disassembly and cleaning period of the filter is generally long, in order to save costs, it is generally only cleaned regularly without special circumstances. However, the filter may be partially blocked before cleaning, so if it is not cleaned in time, it is easy to affect its filtration efficiency and effect. Summary of the invention

[0004] The object of the present invention is to provide a self-cleaning filter.

[0005] The technical problem of the present invention is mainly solved by the following technical solutions:

[0006] A self-cleaning filter comprises a shell, wherein a cover is arranged on the top of the shell, a water inlet pipe and a sewage discharge pipe are arranged on the bottom of the shell, and a water outlet pipe is arranged on the top of the side wall.

[0007] The bottom of the cover body is provided with a connecting seat extending into the shell and being screwed therewith, a filter basket suspended in the shell is fixed at the bottom of the connecting seat through a connecting mechanism, a circle of fixing plates sleeved on the filter basket is provided in the shell below the water outlet pipe, a circle of buoyancy plates I is sleeved on the filter basket below the fixing plate, a sewage discharge mechanism corresponding to the water inlet pipe is provided at the bottom of the filter basket, and a buoyancy plate II for the connecting mechanism to pass through is also provided in the filter basket above the sewage discharge mechanism;

[0008] The sewage discharge mechanism includes a vertical pipe penetrating the bottom wall of the filter basket, a sewage outlet I connected to the bottom of the filter basket is arranged on the side wall of the vertical pipe, a sleeve with a top sealing arrangement is also arranged in the vertical pipe, a connecting port corresponding to the sewage outlet I is arranged on the side wall of the sleeve, a guide seat for sealing the outlet end of the water inlet pipe is also arranged at the bottom of the sleeve, a sewage outlet II is also arranged on the side wall of the sleeve between the guide seat and the filter basket, and the guide seat is composed of two groups of upper and lower conical convex seats.

[0009] Preferably, a limiting plate located above the vertical tube is provided at the top end of the sleeve, the internal opening of the vertical tube is polygonal, and the size of the sleeve is adapted to the size of the internal opening of the vertical tube.

[0010] Preferably, the connecting mechanism includes a vertical rod fixed in a connecting seat by a bearing, the vertical rod passes through a through hole in the middle of the buoyancy plate II, a circle of grooves is arranged around the bottom of the side wall of the vertical rod, a circle of recessed parts corresponding to the grooves are recessed on the side wall of the filter basket, the side wall of the recessed part is a solid structure, a screw hole is opened on the side wall of the recessed part, a bolt with the end extending into the opening of the groove is threaded in the screw hole, the head of the bolt is located in the opening of the recessed part, and the buoyancy plate II is located above the bolt.

[0011] Preferably, a circle of limiting protrusions located below the buoyancy plate 1 is provided on the inner wall of the shell, and a circle of guide slopes is provided around the corner edges of the bottom inner opening of the buoyancy plate 1.

[0012] Preferably, the bottom of the connecting seat is connected to an annular seat which is sleeved on the connecting mechanism via a spring, and the annular seat is located in the top opening in the filter basket.

[0013] The beneficial effects of the present invention are as follows: while filtering the liquid through the filter basket, the impact force generated by the introduced liquid pushes the sewage discharge mechanism upward, so that the sewage discharge port I and the connecting port in the sewage discharge mechanism are misaligned up and down, so that the liquid introduced into the shell will not enter the filter basket without being filtered, and at the same time, the impact force and buoyancy generated by the introduced liquid can push the buoyancy plate I and the buoyancy plate II upward, so that the liquid that may be mixed with impurities in the filter basket will not overflow from the top opening thereof through the buoyancy plate II, and after the filtration is completed, the sewage discharge pipe is opened to discharge the residual liquid in the shell, and at this time, as the liquid level in the shell drops, the buoyancy plate I and the buoyancy plate II move downward to clean the impurities adhered to the inner and outer sides of the filter basket so that they are mixed with the liquid, and the impurities are not lost. Under the impact of the liquid introduced into the water inlet pipe, the guide seat moves down to seal the water inlet pipe, and at the same time drives the connecting port to move down through the sleeve to connect with the sewage outlet I. Then, the impurities cleaned in the filter basket are mixed with the liquid and can flow to the bottom of the shell through the sewage outlet I, the connecting port, the sleeve and the sewage outlet II. Finally, the impurities scraped off on both sides of the filter basket are mixed with the liquid and flow to the bottom of the shell and are discharged from the opened sewage outlet pipe. After each filtration of the liquid, the residual liquid in the shell can play a self-cleaning role on the inside of the filter, so as to continue to use the filter. When cleaning the filter regularly, rotate the connecting seat to separate it from the shell, then pull the filter basket and other components out of the shell, and at the same time, remove the filter basket and other components to clean it thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 is a cross-sectional view of the present invention;

[0016] Figure 3 yes Figure 2 Schematic diagram of the structure in another state;

[0017] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0018] In the figure: 1, shell, 2, cover, 3, water inlet pipe, 4, sewage pipe, 5, water outlet pipe, 6, connecting seat, 7, filter basket, 8, fixing plate, 9, buoyancy plate I, 10, sewage discharge mechanism, 101, vertical pipe, 102, sewage outlet I, 103, sleeve, 104, connecting port, 105, guide seat, 106, sewage outlet II, 11, buoyancy plate II, 12, limit plate, 13, limit protrusion, 14, guide slope, 15, spring, 16, annular seat, 17, connecting mechanism, 171, vertical rod, 172, bearing, 173, groove, 174, bolt. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0020] Embodiment 1:

[0021] A self-cleaning filter comprises a shell 1, wherein a cover 2 is arranged on the top of the shell 1, a water inlet pipe 3 and a sewage discharge pipe 4 are arranged on the bottom of the shell 1, and a water outlet pipe 5 is arranged on the top of the side wall.

[0022] The bottom of the cover body 2 is provided with a connecting seat 6 extending into the shell 1 and being screwed thereto, a filter basket 7 suspended in the shell 1 is fixed at the bottom of the connecting seat 6 through a connecting mechanism 17, a circle of fixing plates 8 sleeved on the filter basket 7 is provided in the shell 1 below the water outlet pipe 5, a circle of buoyancy plates I9 is ​​sleeved on the filter basket 7 below the fixing plate 8, a sewage discharge mechanism 10 corresponding to the water inlet pipe 3 is provided at the bottom of the filter basket 7, and a buoyancy plate II11 for the connection mechanism 17 to pass through is also provided in the filter basket 7 above the sewage discharge mechanism 10;

[0023] The sewage discharge mechanism 10 includes a vertical pipe 101 penetrating the bottom wall of the filter basket 7, and a sewage outlet I102 connected to the bottom of the filter basket 7 is arranged on the side wall of the vertical pipe 101. A sleeve 103 with a top sealing arrangement is also arranged in the vertical pipe 101, and a connecting port 104 corresponding to the sewage outlet I102 is arranged on the side wall of the sleeve 103. A guide seat 105 is also arranged at the bottom end of the sleeve 103 to seal the outlet end of the water inlet pipe 3. A sewage outlet II106 is also arranged on the side wall of the sleeve 103 between the guide seat 105 and the filter basket 7, and the guide seat 106 is composed of two groups of upper and lower conical convex seats.

[0024] In this embodiment, the top of the sleeve 103 is provided with a limit plate 12 located above the vertical pipe 101, the internal opening of the vertical pipe 101 is polygonal, and the size of the sleeve 103 is adapted to the size of the internal opening of the vertical pipe 101. This prevents the sleeve 103 from rotating in the vertical pipe 101, and when the sleeve 103 slides to a designated position, it can drive the communication port 104 to communicate with the corresponding sewage outlet 1102.

[0025] The connecting mechanism 17 includes a vertical rod 171 fixed in the connecting seat 6 by a bearing 172. The vertical rod 171 passes through a through hole in the middle of the buoyancy plate II11. A circle of grooves 173 are arranged around the bottom of the side wall of the vertical rod 171. A circle of recessed parts corresponding to the grooves 173 are recessed on the side wall of the filter basket 7. The side wall of the recessed part is a solid structure. A screw hole is opened on the side wall of the recessed part. A bolt 174 with the end extending to the opening of the groove 173 is screwed into the screw hole. The head of the bolt 174 is located in the opening of the recessed part, and the buoyancy plate II11 is located above the bolt 174.

[0026] like Figure 2 , 3 As described, a circle of limiting protrusions 13 located below the buoyancy plate 19 is provided on the inner wall of the housing 1, and a circle of guiding slopes 14 are provided around the corner edges of the bottom of the opening of the buoyancy plate 19. When the buoyancy plate 19 moves down to a certain position, the limiting protrusions 13 can support it to prevent it from excessively moving down and sliding off the bottom of the filter basket 7. At the same time, the guiding slopes 14 can be used to bend and guide the liquid rising below it, so that the liquid flows to the side wall of the filter basket 7 and is filtered by the side wall aperture.

[0027] like Figure 2 , 3 As shown, the bottom of the connecting seat 6 is connected to an annular seat 16 which is sleeved on a connecting mechanism 17 via a spring 15 , and the annular seat 16 is located in the top opening of the filter basket 7 .

[0028] The installation steps of the filter basket are as follows: put the buoyancy plate II11 on the vertical rod 171, and the filter basket 7 on the buoyancy plate II11, then screw the bolt 174 into the screw hole in the side wall of the recessed portion, and the end of the bolt 174 extends into the corresponding groove 173. Next, pass the filter basket 7 through the opening of the fixing plate 8 and the opening in the middle of the buoyancy plate I9, and drive the connecting seat 6 to be screwed with the top opening in the shell 1. Under the influence of gravity, the guide seat 105 moves downward to seal the outlet end of the water inlet pipe 3, and the disassembly steps are opposite.

[0029] During use, the liquid is introduced into the shell 1 through the water inlet pipe 3, wherein the impact force generated by the high-pressure liquid drives the guide seat 105 to move upward, and at this time, the guide seat 105 drives the sleeve 103 to move upward in the vertical pipe 101 so that the connecting port 104 and the sewage outlet I102 are staggered up and down, and the inclined surface at the bottom of the guide seat 105 guides the liquid introduced by the water inlet pipe 3 to flow to the four sides, wherein the bottom end of the vertical rod 171 abuts against the limit plate 12 to prevent the sleeve 103 and the guide seat 105 from excessively moving upward, thereby causing the sewage outlet II106 to be connected with the sewage outlet II102, and at the same time, when the liquid surges in the shell 1, it will push the buoyancy plate I9 to move upward on the outside of the filter basket 7, so that the buoyancy plate I9 abuts against the bottom end surface of the fixed plate 8, and the liquid penetrates the side wall of the filter basket 7 into its interior, wherein as the liquid level in the filter basket 7 rises, it will push the buoyancy plate II11 to slide upward inside it, and finally Finally, the buoyancy plate II11 moves up to the top opening in the shell 1 and squeezes the spring 15 through the annular seat 16 to make it contract. At this time, the liquid entering the shell 1 through the water inlet pipe 3 passes through the side wall aperture of the filter basket 7 and enters its interior. At this time, the buoyancy plate II11 prevents impurities that may exist in the liquid in the filter basket 7 from overflowing from its top opening and being discharged from the water outlet pipe 5, wherein the liquid in the filter basket 7 flows out through the side wall aperture of the filter basket 7 above the fixed plate 8 and is finally discharged from the water outlet pipe 5. In this embodiment, the side wall aperture of the filter basket 7 above the fixed plate 8 is smaller than the side wall aperture below it, so that the side wall aperture of the filter basket 7 below the fixed plate 8 performs a primary filtration on the liquid, and then the liquid enters its interior through the side wall aperture of the filter basket 7 above the fixed plate 8 for secondary filtration, and the liquid after multi-stage filtration is discharged through the outlet pipe 5.

[0030] When the introduction of liquid through the water inlet pipe 3 stops, under the impact force generated by the loss of the introduced liquid and the gravity of the guide seat 105, the guide seat 105 drives the sleeve 103 to move downward in the vertical pipe 101, and finally the bottom end of the guide seat 105 slides into the outlet end of the water inlet pipe 3 to seal it, preventing the buoyancy generated by the residual liquid in the shell 1 from affecting the downward movement of the guide seat 105 to seal the outlet end of the water inlet pipe 3. At the same time, the sleeve 103 moves downward to align the sewage outlet I102 with the connecting port 104, so that the liquid mixed with impurities in the filter basket 7 can enter the sleeve 103 through the sewage outlet I102 and the connecting port 104, and then flow into the bottom of the shell 1 through the sewage outlet II106 and be discharged from the sewage pipe 4;

[0031] Then, after the sewage pipe 4 is opened, when the guide seat 105 seals the water inlet pipe 3, as the liquid level in the shell 1 slowly drops, the spring 15 stretches and exerts a downward thrust on the buoyancy plate II11 through the annular seat 16. At this time, the buoyancy plate II11 will scrape and clean the inner wall of the filter basket 7 during its downward movement, so that impurities that may adhere to the inside are scraped off and mixed with the liquid, and the liquid mixed with impurities can enter the vertical pipe through the sewage outlet I102 and the connecting port 104 at this time, and then flow out from the sewage outlet II106 to the bottom of the shell 1. At the same time, the liquid level in the shell 1 drops, causing the buoyancy plate I9 to also be affected by gravity. It will slowly move downward in the shell 1 to scrape and clean the impurities adhered to the outer wall of the filter basket 7, so that the impurities are mixed with the liquid. Finally, the impurities scraped off from the inner and outer sides of the filter basket 7 are mixed with the liquid and flow to the bottom of the shell 1 and are discharged from the opened drain pipe 4. After each filtration of the liquid, the residual liquid in the shell 1 can be used to self-clean the inside of the filter, so as to continue to use the filter. When cleaning the filter regularly, rotate the connecting seat 6 to separate it from the shell 1, then pull the filter basket 7 and other components out of the shell 1, and at the same time, remove the filter basket 7 and other components to clean it thoroughly.

[0032] Embodiment 2:

[0033] A self-cleaning filter, which is different from the embodiment 1 in that a magnetic adsorption layer is provided on the bottom surface of the guide seat 105. When the guide seat 105 loses the impact pressure of the liquid introduced by the water inlet pipe 3, under the influence of the gravity of the guide seat 105 itself and the magnetic force generated by the magnetic adsorption layer, it can quickly drive the guide seat 105 to move downward, and the guide seat 105 drives the sleeve 103 to move downward in the vertical pipe 101, and finally makes the bottom end of the guide seat 105 slide into the outlet end of the water inlet pipe 3 to seal it, so as to prevent the buoyancy generated by the residual liquid in the shell 1 from affecting the guide seat 105. The flow seat 105 moves downward to seal the outlet end of the water inlet pipe 3, and at the same time, the sleeve 103 moves downward to align the drain port I102 with the connecting port 104, so that the liquid mixed with impurities in the filter basket 7 can enter the sleeve 103 through the drain port I102 and the connecting port 104, and then flow into the bottom of the shell 1 through the drain port II106 and be discharged from the drain pipe 4. When the liquid is introduced through the water inlet pipe 3, the pressure generated can push the magnetic adsorption layer to separate from the inner bottom wall of the shell 1. At this time, the liquid pressure can push the guide seat 105 to drive the sleeve 103 to move upward in the vertical pipe 101 and hang in the air.

[0034] The present invention is described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A self-cleaning filter, comprising a housing, a cover body is arranged on the top of the housing, a water inlet pipe and a sewage discharge pipe are arranged on the bottom of the housing, and a water outlet pipe is arranged on the top of the side wall, characterized in that: The bottom of the cover body is provided with a connecting seat extending into the shell and being screwed therewith, a filter basket suspended in the shell is fixed at the bottom of the connecting seat through a connecting mechanism, a circle of fixing plates sleeved on the filter basket is provided in the shell below the water outlet pipe, a circle of buoyancy plates I is sleeved on the filter basket below the fixing plate, a sewage discharge mechanism corresponding to the water inlet pipe is provided at the bottom of the filter basket, and a buoyancy plate II for the connecting mechanism to pass through is also provided in the filter basket above the sewage discharge mechanism; The sewage discharge mechanism includes a vertical pipe penetrating the bottom wall of the filter basket, a sewage outlet I connected to the bottom of the filter basket is arranged on the side wall of the vertical pipe, a sleeve with a top sealing arrangement is also arranged in the vertical pipe, a connecting port corresponding to the sewage outlet I is arranged on the side wall of the sleeve, a guide seat for sealing the outlet end of the water inlet pipe is also arranged at the bottom of the sleeve, a sewage outlet II is also arranged on the side wall of the sleeve between the guide seat and the filter basket, and the guide seat is composed of two groups of upper and lower conical convex seats.

2. A self-cleaning filter according to claim 1, characterized in that: The top of the sleeve is provided with a limiting plate located above the vertical tube. The inner opening of the vertical tube is polygonal. The size of the sleeve is matched with the size of the inner opening of the vertical tube.

3. A self-cleaning filter according to claim 1, characterized in that: The connecting mechanism includes a vertical rod fixed in a connecting seat by a bearing, the vertical rod passes through a through hole in the middle of the buoyancy plate II, a circle of grooves is arranged around the bottom of the side wall of the vertical rod, a circle of recessed parts corresponding to the grooves are recessed on the side wall of the filter basket, the side wall of the recessed part is a solid structure, a screw hole is opened on the side wall of the recessed part, a bolt with the end extending into the opening of the groove is screwed into the screw hole, the head of the bolt is located in the opening of the recessed part, and the buoyancy plate II is located above the bolt.

4. A self-cleaning filter according to claim 1, characterized in that: A circle of limiting protrusions located below the buoyancy plate 1 is arranged on the inner wall of the shell, and a circle of guide slopes is arranged around the corner edges of the bottom inner opening of the buoyancy plate 1.

5. A self-cleaning filter according to claim 1, characterized in that: The bottom of the connecting seat is connected to an annular seat which is sleeved on the connecting mechanism through a spring, and the annular seat is located in the top opening of the filter basket.

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