Basket filter

Abstract

The invention discloses a basket type filter, which relates to the technical field of filtering equipment, and comprises a tank body, a basket body, a filtering medium, a water inlet pipe, a water outlet pipe and a connecting device, the tank body comprises a cover body and a barrel body, and the cover body is detachably connected with the barrel body; the interior of the basket body is provided with a filling space, and the basket body is connected with the cover body through the connecting device; the basket body divides the cavity into a first space and a second space in the cavity; the water inlet pipe is communicated with the first space, and the water outlet pipe is communicated with the second space; a water inlet is formed in the top of the basket body; a plurality of water outlet holes are formed in the bottom of the basket body. According to the filtering basket, a worker can conveniently fill and replace the filtering medium in the basket body and can also conveniently clean impurities in the basket body, and therefore the high filtering efficiency of liquid can be kept.

Description

Technical Field

[0001] The present application relates to the technical field of filtering equipment, and in particular to a basket filter. Background Art

[0002] Basket filter is a common filtering equipment, mainly used to remove solid particles from liquid or gas. Its main feature is that it uses a basket-shaped container as a support for the filter medium, and different types of filter media can be placed inside the basket, such as filter mesh, filter cloth, filter paper or screen, etc.

[0003] The existing basket filter for filtering liquid usually includes a tank body, a basket body, a filter medium, an inlet pipe and an outlet pipe. The tank body has a cavity for the liquid to enter and be filtered, the basket body is located in the cavity, and the inside of the basket body is filled with a filter medium; after the filtered liquid enters the cavity through the inlet pipe, it first enters the inside of the basket body to be filtered by the filter medium, and the filtered liquid is discharged through the outlet pipe.

[0004] However, in the existing basket filters, the basket body is usually fixedly installed inside the tank body, which makes it inconvenient for the staff to fill and replace the filter medium. In addition, when the basket body is clogged with impurities as the liquid is filtered, it will be difficult for the staff to clean the impurities inside the basket body. At the same time, the clogged impurities will affect the subsequent filtration efficiency of the basket filter on the liquid. Summary of the invention

[0005] The present application provides a basket filter, which can facilitate workers to fill and replace the filter medium in the basket body, and can also facilitate workers to clean impurities in the basket body, thereby maintaining a high filtration efficiency for the liquid.

[0006] The present application provides a basket filter, which adopts the following technical solution: A basket filter comprises a tank body, a basket body, a filter medium, a water inlet pipe and a water outlet pipe, wherein the tank body has a cavity inside, the basket body is arranged in the cavity, the filter medium fills the inside of the basket body, and the water inlet pipe and the water outlet pipe are both connected to the tank body, and also comprises a connecting device; The tank body comprises a cover body and a cylinder body, wherein the cover body is arranged on the top of the cylinder body and is detachably connected to the cylinder body; the interior of the basket body has a filling space for the filter medium to be filled, and the basket body is connected to the cover body through the connecting device; The basket body divides the cavity into a first space and a second space in the cavity, and the first space is located above the second space; the water inlet pipe is directly connected to the first space, and the water outlet pipe is directly connected to the second space; the top of the basket body is provided with a water inlet, and the first space is connected to the filling space through the water inlet; the bottom of the basket body is provided with a plurality of water outlet holes, and the filling space is connected to the second space through the plurality of water outlet holes.

[0007] By adopting the above technical solution, the basket body can be taken out from the cavity by removing the cover body, which makes it convenient for the staff to fill and replace the filter medium in the basket body, and also makes it convenient for the staff to clean the impurities in the basket body, so that the basket filter can maintain a high filtration efficiency for the liquid.

[0008] Optionally, the connecting device includes a fixed rod, a movable rod and an elastic member; The fixed rod is fixedly connected to the cover body, the movable rod is movably connected to the fixed rod, the movable direction of the movable rod is vertical and parallel to the axis of the tank body, and the two ends of the elastic member are respectively connected to the fixed rod and the movable rod.

[0009] By adopting the above technical solution, during the process of liquid passing through the basket and being filtered by the basket, the force exerted by the liquid flow on the basket can drive the movable rod to overcome the force of the elastic member and move, and the force exerted by the liquid on the basket is different in magnitude, so that the basket can reciprocate during the process of liquid filtration, which can effectively reduce the probability of impurities blocking the water outlet and effectively improve the filtration efficiency of the filter medium on the liquid.

[0010] Optionally, the bottom of the basket body has a raised portion protruding upward, and a sewage collecting groove for collecting impurities is provided around the raised portion; the sewage collecting groove is communicated with the filling space, a plurality of water outlet holes are provided on the raised portion, and a groove wall of the sewage collecting groove close to the raised portion is an inclined surface inclined outward and downward.

[0011] By adopting the above technical solution, the sewage collecting tank can facilitate the accumulation of impurities generated by liquid filtration in the filling space, and at the same time can facilitate the impurities after the water outlet is cleared and collected in the sewage collecting tank, thereby further effectively reducing the probability of the water outlet being blocked by impurities and affecting the filtration efficiency of the basket filter.

[0012] Optionally, a plurality of clearing members adapted to the water outlets are correspondingly arranged at the bottom of the cylinder, and the clearing members are aligned with the corresponding water outlets along the movable direction of the movable rod; When the movable rod moves upward to the extreme position, there is a distance between the clearing piece and the corresponding water outlet hole; when the movable rod moves downward to the extreme position, the clearing piece can be completely inserted into the corresponding water outlet hole.

[0013] By adopting the above technical solution, when the water outlet holes are seriously blocked by impurities, the force exerted by the liquid flow on the basket body is relatively large, which can drive the basket body to move downward to the extreme position, and multiple clearing parts can clear and unblock multiple water outlet holes respectively, so that the basket body can restore the filtering effect of the liquid in a timely and effective manner.

[0014] Optionally, a guide plate is further included, which is arranged above the basket body and aligned with the water inlet pipe along its water inlet direction; after the liquid entering from the water inlet pipe contacts the guide plate, the guide plate can guide the liquid to flow in a direction close to the water inlet.

[0015] By adopting the above technical solution, the speed at which the liquid entering the first space from the water inlet pipe enters the basket and is filtered can be accelerated, thereby further improving the filtering efficiency of the basket filter on the liquid.

[0016] Optionally, the guide plate is an arc-shaped plate, a side of the guide plate close to the water inlet pipe is an arc-shaped surface, and the end of the guide plate away from the water inlet pipe along its own arc trajectory can guide the liquid to flow downward along the moving direction of the movable rod.

[0017] By adopting the above technical solution, the guiding effect of the guide plate on the flow direction of the liquid can be improved, so that the force exerted on the basket body by the liquid after entering the basket body can effectively drive the basket body to reciprocate.

[0018] Optionally, the guide plate is arranged on the movable rod.

[0019] By adopting the above technical solution, the force exerted on the guide plate when the liquid flows and contacts the guide plate can drive the basket body to move upward first, thereby increasing the degree of reciprocating movement of the basket body under the force exerted by the liquid when it enters the interior; at the same time, the guide plate can act as a reinforcing rib on the movable rod, thereby effectively improving the structural strength of the movable rod.

[0020] Optionally, a mesh cover is movably connected to the top of the basket body, the mesh cover has mesh holes for liquid to pass through, and the mesh cover is movable relative to the basket body to cover the water inlet, preventing the filter medium from leaving the filling space through the water inlet.

[0021] By adopting the above technical solution, the probability of the filter medium in the filling space leaving through the water inlet can be reduced, thereby effectively ensuring the filtering effect of the basket on the liquid.

[0022] Optionally, the basket body is provided with a plurality of brackets in the filling space, both ends of the brackets are connected to the inner wall of the filling space, and the filter medium in the filling space is in contact with and abuts against the brackets.

[0023] By adopting the above technical solution, the overall structural stability of the basket can be improved, thereby increasing the service life of the basket; at the same time, the position stability of the filter medium in the filling space can be improved, so that the filter medium can effectively filter the liquid inside the basket for a long time.

[0024] Optionally, the outer edge of the basket body has a matching portion, and the matching portion fits against the inner wall of the cavity.

[0025] By adopting the above technical solution, the basket can be easily reciprocated under the force exerted by the liquid flow, and the probability of unfiltered liquid in the first space entering the second space from the gap between the basket and the tank body and then being discharged through the water outlet pipe can be reduced.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. It is convenient for the staff to take the basket out of the tank, so that it is convenient for the staff to fill and replace the filter medium in the basket and clean the impurities in the basket, so that the basket filter can maintain a high filtration efficiency for the liquid; 2. It can speed up the speed of liquid flowing through the basket body and being filtered, and at the same time increase the contact frequency between the liquid and the filter medium, thereby effectively improving the filtration efficiency of the basket filter for the liquid; 3. It can reduce the probability of the basket filter being clogged by impurities and affecting its filtering efficiency. At the same time, it can automatically clear the blockage in time when impurities clog it, so that the basket filter can filter the liquid stably for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a basket filter according to an embodiment of the present application; Figure 2 It is an exploded view of a basket filter according to an embodiment of the present application; Figure 3 yes Figure 1 Cross-sectional view along line AA.

[0028] Explanation of the accompanying drawings: 1. tank body; 11. cavity; 111. first space; 112. second space; 12. cover body; 13. cylinder body; 14. blockage clearing member; 2. basket body; 21. filling space; 22. water inlet; 23. water outlet; 24. bracket; 25. matching part; 26. raised part; 27. sewage collecting tank; 3. connecting device; 31. fixing rod; 32. movable rod; 33. elastic member; 4. filter medium; 5. water inlet pipe; 6. water outlet pipe; 7. mesh cover; 71. mesh; 8. guide plate. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The embodiment of the present application discloses a basket filter for filtering liquid, which can facilitate staff to clean internal impurities according to needs.

[0031] Reference Figure 1 and Figure 2 The basket filter comprises a tank body 1, a basket body 2, a connecting device 3, a filter medium 4, a water inlet pipe 5 and a water outlet pipe 6. The tank body 1 is used for filtering liquid inside the tank body 1; the basket body 2 provides a mounting carrier for the filter medium 4 inside the tank body 1; the connecting device 3 is used for installing the basket body 2 inside the tank body 1; the filter medium 4 is used for filtering the liquid; the water inlet pipe 5 is used for sending the liquid to be filtered into the tank body 1; and the water outlet pipe 6 is used for discharging the filtered liquid.

[0032] Reference Figure 2 and Figure 3 The tank body 1 is a hollow cylindrical structure as a whole, and has a cylindrical cavity 11 inside, and the axis of the cavity 11 coincides with the axis of the tank body 1. The tank body 1 includes a cover 12 and a cylinder 13, and the cover 12 is installed on the top of the cylinder 13. The cover 12 and the cylinder 13 are detachably connected, and after the cover 12 and the cylinder 13 are connected, the two together form a cavity 11 inside the tank body 1. In this embodiment, the tank body 1 is preferably installed in a vertical state in the axial direction; and the cover 12 and the cylinder 13 are preferably detachably connected by means of a plurality of sets of bolts and nuts; since the above-mentioned detachable connection method is a common prior art, it will not be described in detail here, and its specific structure is omitted in the drawings.

[0033] Reference Figure 2 and Figure 3The basket body 2 is a cylindrical barrel 13 structure with an oblique end in the axial direction. The basket body 2 has a filling space 21 for filling and installing the filter medium 4. A plurality of brackets 24 are fixedly installed inside the basket body 2. The two ends of the brackets 24 are respectively fixedly connected to the inner wall of the filling space 21. After the filter medium 4 is filled in the filling space 21, the plurality of brackets 24 can contact and abut against the adjacent filter medium 4, thereby improving the position stability of the filter medium 4 after filling and installing in the filling space 21. In this embodiment, it is preferred that the plurality of brackets 24 are fixedly installed in the filling space 21 in the form of a cubic frame; since the filter medium 4 is a prior art in the art, its specific type is not further limited here, and it is only briefly indicated in the drawings.

[0034] The basket body 2 has a water inlet 22 at the oblique opening for liquid to flow into the filling space 21; the end of the basket body 2 away from the water inlet 22 has a protrusion 26 protruding toward the filling space 21, and a plurality of water outlet holes 23 are provided on the protrusion 26 for liquid to flow out of the filling space 21. In this embodiment, the aperture size of the water outlet holes 23 is preferably sufficient to allow liquid to flow while preventing impurities separated from the liquid by the filter medium 4.

[0035] Reference Figure 3 The raised portion 26 is a truncated cone-shaped structure as a whole, and the axis of the raised portion 26 coincides with the axis of the basket body 2; the end of the basket body 2 away from the water inlet 22 also surrounds the raised portion 26 and has a sewage collecting groove 27 for collecting impurities, and the sewage collecting groove 27 is in the shape of an annular structure, and the axis of the sewage collecting groove 27 coincides with the axis of the basket body 2.

[0036] The groove wall of the sewage collecting groove 27 on one side close to the axis of the basket body 2 is an inclined surface, and the end of the inclined surface away from the water inlet 22 on the basket body 2 is an inclined lower end; at this time, the impurities filtered and separated by the filter medium 4 in the filling space 21 can flow into the sewage collecting groove 27 for collection with the liquid, and at the same time, the impurities located on the protrusion 26 can also move toward the direction close to the sewage collecting groove 27 with the liquid flow, and then enter the sewage collecting groove 27 along the inclined surface of the sewage collecting groove 27 for collection.

[0037] Reference Figure 2 and Figure 3 A mesh cover 7 for covering the water inlet 22 is movably installed at the oblique opening of the basket body 2. The mesh cover 7 is an elliptical plate-shaped structure as a whole, and has a plurality of mesh holes 71 for liquid to pass through smoothly. In this embodiment, the size of the mesh holes 71 is preferably sufficient to allow impurities in the liquid to pass through, while being able to effectively prevent the filter medium 4 from passing through.

[0038] One end of the long axis of the mesh cover 7 is rotatably connected to the lower part of the position where the bevel of the basket 2 is located. The rotation axis of the mesh cover 7 is perpendicular to the axis of the basket 2 and is parallel to the tangent of the mesh cover 7 at the rotation connection position. The other end of the long axis on the mesh cover 7 can be connected to the upper part of the position where the bevel of the basket 2 is located according to needs. When the mesh cover 7 is rotated to the extreme position relative to the basket 2 in the direction close to the water inlet 22, the mesh cover 7 is in contact with the position of the bevel of the basket 2, and the other end of the long axis on the mesh cover 7 can be connected to the upper part of the position where the bevel of the basket 2 is located. In this embodiment, it is preferred that the other end of the long axis on the mesh cover 7 can be fixedly connected to the upper part of the position where the bevel of the basket 2 is located by bolts and nuts. Since the above-mentioned connection method is a common prior art, it will not be described in detail here, and it is omitted in the accompanying drawings.

[0039] The connecting device 3 includes a fixed rod 31 , a movable rod 32 and an elastic member 33 .

[0040] The fixing rod 31 is a cylindrical structure as a whole, one end of the fixing rod 31 in the axial direction is fixedly connected to the cover body 12, and the axis of the fixing rod 31 coincides with the axis of the cover body 12; after the cover body 12 is installed on the top of the cylinder body 13, the fixing rod 31 will be located in the cavity 11.

[0041] The movable rod 32 is also cylindrical in structure as a whole, and is sleeved with one end of the fixed rod 31 away from the cover body 12 , and can move relative to the fixed rod 31 along the axial direction of the fixed rod 31 , and at this time the axis of the movable rod 32 coincides with the axis of the fixed rod 31 .

[0042] The elastic member 33 is installed inside the movable rod 32, and two ends of the elastic member 33 are respectively fixedly connected to the fixed rod 31 and the movable rod 32. In this embodiment, the elastic member 33 is preferably a spring.

[0043] The movable rod 32 is limited in its movement relative to the fixed rod 31. When the movable rod 32 moves to the extreme position in the direction close to the cover body 12, the elastic member 33 is in a state of maximum compression; when the movable rod 32 moves to the extreme position in the direction away from the cover body 12, the elastic member 33 is in a state of maximum tension.

[0044] One end of the movable rod 32 away from the cover body 12 is fixedly connected to the mesh cover 7. When the mesh cover 7 covers the water inlet 22 on the basket body 2, the axis of the basket body 2 coincides with the axis of the movable rod 32. When the cover body 12 is installed and fixed on the top of the cylinder body 13, the elastic member 33 is in a position state of being squeezed to a certain extent under the action of gravity of the movable rod 32, the basket body 2 and other structures, and the movable rod 32 can move freely relative to the fixed rod 31.

[0045] When it is necessary to fill, replace or clean the filter medium 4 inside the basket body 2, the cover body 12 can be removed and the cover body 12 connected to the basket body 2 and other structures can be taken out from the cavity 11 through the connecting device 3; when the cover body 12 maintains a vertical axis position, after the detachable connection between the net cover 7 and the basket body 2 is released, the basket body 2 will rotate relative to the net cover 7 under the action of its own gravity and the filter medium 4 inside, so that the water inlet 22 is opened and in a position with the axis inclined, which is convenient for the staff to fill, replace or clean the filter medium 4 inside the basket body 2.

[0046] The surrounding side of the basket body 2 has a matching portion 25 adapted to the inner wall of the surrounding side of the cavity 11, and the matching portion 25 is distributed on the outer edge of the basket body 2 close to its own oblique opening; after the basket body 2 is installed in the cavity 11, the outer surface of the matching portion 25 fits and abuts against the inner wall of the surrounding side of the cavity 11, and when the basket body 2 moves relative to the cover body 12 with the movable rod 32, the outer surface of the matching portion 25 will keep fitting and abutting against the inner wall of the surrounding side of the cavity 11.

[0047] Reference Figure 3 At this time, the basket body 2 will divide the cavity 11 into a first space 111 and a second space 112 in the cavity 11, and the first space 111 is located above the second space 112; the liquid to be filtered in the cavity 11 will be located in the first space 111, and the filtered liquid will be located in the second space 112.

[0048] The water outlet end of the water inlet pipe 5 is fixedly connected to the top of the cylinder 13 and communicates with the first space 111. The water outlet direction of the water inlet pipe 5 is aligned with the axial direction of the cylinder 13 and is perpendicular to the axial direction of the cylinder 13. The water outlet direction of the water inlet pipe 5 remains toward the water inlet 22 at the top of the basket body 2, and the water outlet direction of the water inlet pipe 5 is perpendicular to the rotation axis of the mesh cover 7 relative to the basket body 2.

[0049] Reference Figure 2 and Figure 3 Furthermore, in order to facilitate the liquid to be filtered entering the first space 111 through the water inlet pipe 5 to quickly enter the basket 2 through the water inlet 22 for filtering, a guide plate 8 for guiding the flow direction of the liquid is preferably fixedly installed on the outer side of the movable rod 32. In this embodiment, the guide plates 8 are preferably distributed on both sides of the movable rod 32. At this time, the guide plates 8 can have the effect of reinforcing the movable rod 32 and improve the structural strength of the movable rod 32.

[0050] The guide plate 8 is an arc-shaped plate structure as a whole, and is located on the side of the mesh cover 7 close to the cover body 12, and the arc track direction of the guide plate 8 is perpendicular to the rotation axis of the mesh cover 7 relative to the basket body 2. The side of the guide plate 8 close to the water inlet pipe 5 is an arc surface, and after the liquid to be filtered enters the first space 111 through the water inlet pipe 5, the liquid will contact the above arc surface along the water outlet direction of the water inlet pipe 5.

[0051] At this time, the force exerted by the liquid flow on the guide plate 8 can drive the movable rod 32 to overcome the force of the elastic member 33 and move toward the direction close to the cover body 12, thereby driving the basket body 2 to move toward the direction close to the cover body 12; then, the guide plate 8 can guide the liquid that actively contacts the curved surface of the guide plate 8 on the side close to the water inlet pipe 5 to flow toward the direction close to the mesh cover 7, thereby accelerating the speed at which the liquid that enters the first space 111 through the water inlet pipe 5 enters the basket body 2 through the water inlet 22 and is filtered; thereafter, the liquid that enters the basket body 2 through the water inlet 22 exerts a force on the basket body 2, which can drive the basket body 2 to drive the movable rod 32 to overcome the force of the elastic member 33 and move toward the direction away from the cover body 12. In this embodiment, it is preferred that the curved surface of the guide plate 8 on the side close to the water inlet pipe 5 can ultimately guide the liquid to flow downward along the axis direction of the tank body 1.

[0052] The water inlet end of the water outlet pipe 6 is fixedly connected to the bottom of the cylinder 13 and communicates with the second space 112. The water inlet direction of the water outlet pipe 6 is aligned with the axial direction of the cylinder 13 and parallel to the water outlet direction of the water inlet pipe 5. The installation position of the water outlet pipe 6 on the cylinder 13 is lower than the installation position of the water inlet pipe 5 on the cylinder 13, and the position where the water outlet pipe 6 communicates with the second space 112 is located above the inner wall of the bottom of the cavity 11.

[0053] Reference Figure 3 The water outlet end of the water inlet pipe 5 is fixedly connected to the top of the cylinder 13 and communicates with the first space 111. The water outlet direction of the water inlet pipe 5 is aligned with the axial direction of the cylinder 13 and is perpendicular to the axial direction of the cylinder 13. The water outlet direction of the water inlet pipe 5 remains toward the water inlet 22 at the top of the basket body 2, and the water outlet direction of the water inlet pipe 5 is perpendicular to the rotation axis of the mesh cover 7 relative to the basket body 2.

[0054] The liquid entering the basket body 2 will enter the second space 112 through the plurality of water outlet holes 23 after being filtered by the filter medium 4, and the filtered liquid in the second space 112 will be discharged through the water outlet pipe 6. At this time, while the liquid to be filtered continuously enters the first space 111 through the water inlet pipe 5 and the filtered liquid is continuously discharged through the water outlet pipe 6, the basket body 2 can reciprocate along its own axial direction in the cavity 11 relative to the tank body 1, thereby further accelerating the liquid to be filtered in the first space 111 to enter the basket body 2 through the water inlet 22, and at the same time, can intensify the contact between the filter medium 4 inside the basket body 2 and the liquid to be filtered, so as to further improve the filtering efficiency of the basket filter.

[0055] Furthermore, when the impurities filtered and separated by the filter medium 4 in the filling space 21 block the water outlet hole 23, during the reciprocating movement of the basket body 2, when the basket body 2 moves in a direction away from the cover body 12, the filtered liquid in the second space 112 can enter the filling space 21 through the water outlet hole 23, thereby exerting a force on the impurities blocking the water outlet hole 23 to make them leave the corresponding water outlet hole 23, so as to achieve the effect of clearing the blockage.

[0056] Furthermore, in order to further reduce the probability that the water outlet hole 23 is clogged by impurities, thereby affecting the filtering efficiency of the basket filter, and at the same time reduce the frequency of needing to remove the basket body 2 to clean the impurities due to the water outlet hole 23 being clogged by impurities, it is preferred that the bottom of the cylinder 13 has a plurality of clearing parts 14 for clearing the water outlet hole 23.

[0057] The clearing piece 14 is an overall cylindrical structure and is located at the bottom of the second space 112. Its shape is adapted to the shape of the water outlet 23, and its axis is parallel to the axis of the cylinder 13. Multiple clearing pieces 14 correspond one-to-one to multiple water outlets 23, and the clearing pieces 14 are aligned with the corresponding water outlets 23 along their own axial direction.

[0058] When the multiple water outlet holes 23 are blocked to a serious degree by impurities, the force exerted by the liquid entering the basket body 2 on the basket body 2 increases, and the basket body 2 can be driven to move to the extreme position in the direction away from the cover body 12; during this process, the clearing piece 14 can be inserted into the corresponding water outlet hole 23, and the end of the clearing piece 14 can enter the filling space 21, so that the impurities blocking the water outlet hole 23 can be pushed open, so that they move into the sewage collection tank 27 with the flow of liquid inside the basket body 2, or are crushed by the clearing piece 14 to form particles that can pass through the water outlet hole 23 (at this time, the size of the particles is the size that the filter of the basket body 2 cannot filter them), so that the corresponding water outlet hole 23 is restored to be unobstructed, and the basket body 2 can also move in the direction close to the cover body 12 after the force exerted by the liquid is reduced, so that the clearing piece 14 leaves the corresponding water outlet hole 23.

[0059] The implementation principle of a basket filter in the embodiment of the present application is: After the liquid to be filtered enters the first space 111 through the water inlet pipe 5, it first flows toward the water inlet 22 under the guidance of the guide plate 8, passes through the mesh cover 7 and enters the interior of the basket 2 to be filtered by the filter medium 4; the filtered liquid enters the second space 112 through the multiple water outlet holes 23, and is then discharged from the water outlet pipe 6; In this process, the liquid flow first exerts a force on the guide plate 8 to drive the basket 2 to move upward along with the movable rod 32. After the liquid enters the basket 2, it exerts a force on the basket 2 to drive the basket 2 to move downward through the movable rod 32, so that the basket 2 can reciprocate during the process of continuous liquid feeding and filtration, thereby increasing the contact between the filter medium 4 and the liquid to be filtered, so as to improve the filtration efficiency and filtration effect of the filter of the basket 2 on the liquid. During the process of the liquid being filtered by the filter medium 4, the impurities in the liquid will be separated and can be concentrated in the sewage collection tank 27; when the water outlet 23 is less blocked by impurities, the reciprocating basket body 2 can drive the filtered liquid in the second space 112 to enter the filling space 21 through the water outlet 23, and play a clearing effect on the water outlet 23; when the water outlet 23 is more blocked by impurities, the basket body 2 is exerted with a greater force by the liquid, and the basket body 2 will move to the extreme position in the direction away from the cover body 12, so that the multiple clearing members 14 are respectively inserted into the multiple water outlets 23, and the water outlets 23 are cleared; When the filtering effect of the filter medium 4 in the filling space 21 is difficult to meet the filtering requirements of the liquid or there are many impurities left in the filling space 21 after the liquid is filtered and separated, the staff can remove the cover body 12 and the cylinder body 13, and take the cover body 12 out of the cavity 11 together with the basket body 2 and other structures through the connecting device 3, so that the staff can fill and replace the filter medium 4 outside the cavity 11 and clean the impurities inside the basket body 2.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A basket filter, comprising a tank body (1), a basket body (2), a filter medium (4), a water inlet pipe (5) and a water outlet pipe (6), wherein the tank body (1) has a cavity (11) inside, the basket body (2) is arranged in the cavity (11), the filter medium (4) fills the inside of the basket body (2), and the water inlet pipe (5) and the water outlet pipe (6) are both connected to the tank body (1), characterized in that: Also includes a connecting device (3); The tank body (1) comprises a cover body (12) and a cylinder body (13); the cover body (12) is arranged on the top of the cylinder body (13) and is detachably connected to the cylinder body (13); the interior of the basket body (2) comprises a filling space (21) for filling the filter medium (4), and the basket body (2) is connected to the cover body (12) via the connecting device (3); The basket body (2) divides the cavity (11) into a first space (111) and a second space (112) in the cavity (11), and the first space (111) is located above the second space (112); the water inlet pipe (5) is directly connected to the first space (111), and the water outlet pipe (6) is directly connected to the second space (112); the top of the basket body (2) is provided with a water inlet (22), and the first space (111) is connected to the filling space (21) through the water inlet (22); the bottom of the basket body (2) is provided with a plurality of water outlet holes (23), and the filling space (21) is connected to the second space (112) through the plurality of water outlet holes (23).

2. A basket filter according to claim 1, characterized in that: The connecting device (3) comprises a fixed rod (31), a movable rod (32) and an elastic member (33); The fixed rod (31) is fixedly connected to the cover body (12), the movable rod (32) is movably connected to the fixed rod (31), the movable direction of the movable rod (32) is vertical and parallel to the axis of the tank body (1), and the two ends of the elastic member (33) are respectively connected to the fixed rod (31) and the movable rod (32).

3. A basket filter according to claim 2, characterized in that: The bottom of the basket body (2) has a protruding portion (26) protruding upward, and a dirt collecting groove (27) surrounding the protruding portion (26) for collecting impurities; the dirt collecting groove (27) is communicated with the filling space (21), a plurality of water outlet holes (23) are all provided on the protruding portion (26), and a groove wall of the dirt collecting groove (27) close to the protruding portion (26) is an inclined surface inclined outwardly and downwardly.

4. A basket filter according to claim 3, characterized in that: A plurality of clearing members (14) adapted to the water outlet holes (23) are correspondingly arranged at the bottom of the cylinder (13), and the clearing members (14) are aligned with the corresponding water outlet holes (23) along the movable direction of the movable rod (32); When the movable rod (32) moves upward to the extreme position, a distance exists between the clearing piece (14) and the corresponding water outlet hole (23); when the movable rod (32) moves downward to the extreme position, the clearing piece (14) can be completely inserted into the corresponding water outlet hole (23).

5. A basket filter according to claim 4, characterized in that: It also comprises a guide plate (8), wherein the guide plate (8) is arranged above the basket body (2) and is aligned with the water inlet pipe (5) along its water inlet direction; after the liquid entering from the water inlet pipe (5) contacts the guide plate (8), the guide plate (8) can guide the liquid to flow in a direction close to the water inlet (22).

6. A basket filter according to claim 5, characterized in that: The guide plate (8) is an arc-shaped plate, a side of the guide plate (8) close to the water inlet pipe (5) is an arc-shaped surface, and an end of the guide plate (8) away from the water inlet pipe (5) along its own arc-shaped trajectory can guide liquid to flow downward along the moving direction of the movable rod (32).

7. A basket filter according to claim 5, characterized in that: The guide plate (8) is arranged on the movable rod (32).

8. A basket filter according to claim 2, characterized in that: A mesh cover (7) is movably connected to the top of the basket body (2), the mesh cover (7) having mesh holes (71) for liquid to pass through, and the mesh cover (7) is movable relative to the basket body (2) to cover the water inlet (22), thereby preventing the filter medium (4) from leaving the filling space (21) through the water inlet (22).

9. A basket filter according to claim 2, characterized in that: The basket body (2) is provided with a plurality of brackets (24) in the filling space (21); both ends of the brackets (24) are connected to the inner wall of the filling space (21); and the filter medium (4) in the filling space (21) is in contact with and abuts against the brackets (24).

10. A basket filter according to claim 2, characterized in that: The outer edge of the basket body (2) has a matching portion (25), and the matching portion (25) fits against the inner wall of the cavity (11).

Images