Filtering collection device for liquid suspensions

Abstract

This utility model relates to a filtration and collection device for suspended solids in liquids and water treatment equipment, belonging to the field of liquid treatment technology. It solves the problems of existing grids trapping suspended solids, which easily accumulate, entangle, are difficult to clean, and produce odors and pollute the environment. The key technical points are: it includes a receiving pipe, a sealing cap, and a grid barrel. The side wall of the receiving pipe is connected to an inlet pipe. The sealing cap is detachably installed on the top of the receiving pipe, and the grid barrel is detachably installed at the bottom of the receiving pipe. The sealing cap may be equipped with a liquid level indicator, and the grid barrel has a handle for easy handling. The receiving pipe and the grid barrel are fixed by overlapping their inner and outer edges, and are equipped with guide strips and anti-misalignment grooves for circumferential positioning. The outlet of the inlet pipe points towards the side wall of the grid barrel, optimizing the flow path. Its main purpose is to efficiently filter and collect suspended solids in liquids, avoiding air pollution.

Description

Technical Field

[0001] This utility model relates to the field of liquid treatment, and in particular to a filtration and collection device for liquid suspended solids. Background Technology

[0002] In order to effectively collect suspended solids in liquids, especially to effectively intercept and collect fine suspended solids contained in domestic sewage after preliminary filtration by devices such as floor drains, so as to prevent suspended solids from clogging the conveying pipes or entering the water treatment equipment and adhering to the biological packing of the water treatment equipment, thus affecting the normal operation of the water treatment equipment.

[0003] Currently, baffles are typically installed at the inlet of liquid transport pipelines or water treatment equipment to prevent suspended solids in the liquid from entering and avoid clogging of the pipelines or water treatment equipment. However, suspended solids that cannot pass through the baffles accumulate at the grid and become entangled in the baffle's frame, making them difficult to clean. As the suspended solids continue to accumulate, their residence time at the baffle increases, making them prone to organic matter decomposition, producing a noticeable odor, and polluting the surrounding environment. Utility Model Content

[0004] The purpose of this utility model is to provide a water treatment bar screen device. Utilizing a structure comprising a bar screen bucket, a receiving pipe, and a detachable sealing cap, when installed at the inlet of a water treatment device or connecting water pipe, the bar screen bucket is located inside the device, and the sealing cap is detachably placed on top of the receiving pipe to form a relatively sealed suspended solids collection structure. This solves the technical problem in the prior art where bar screens intercept suspended solids for extended periods, leading to their decomposition, odor generation, and environmental pollution. The device offers the advantages of easy cleaning, simple replacement, high suspended solids collection efficiency, and avoidance of secondary pollution.

[0005] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0006] A liquid suspension filtration and collection device, comprising,

[0007] A receiving tube, wherein a water inlet pipe is connected to the side wall of the receiving tube;

[0008] A sealing cap, which is hinged to the top opening of the receiving tube by a hinge and is detachably installed on the top opening of the receiving tube.

[0009] A bar grid barrel, which is detachably mounted at the bottom opening of a receiving tube via its top rim.

[0010] Preferably, a number of bolts are hinged to the outer periphery of the top opening of the receiving tube;

[0011] Several notches are made on the edge of the sealing cap;

[0012] The bolt shaft can fit into the corresponding notch, and together with the nut, the sealing cap and the receiving tube are closed and fixed.

[0013] Preferably, the hinge is a hinge, and the hinge lug of the hinge is provided with a limiting protrusion, which is used to limit the opening and closing angle of the sealing cap.

[0014] Preferably, the sealing cap is equipped with a liquid level indicator, which includes an indicator rod and a buoyancy block;

[0015] The rod of the indicator rod is slidably fitted into the through hole of the sealing cover, and the bottom end of the indicator rod is provided with the buoyancy block;

[0016] When the sealing cap is placed over the receiving tube, the buoyancy block is located inside the receiving tube.

[0017] Preferably, the top of the indicator rod is provided with a stop structure;

[0018] The stop structure and the buoyancy block respectively cooperate with the two end faces of the sealing cover to limit the axial displacement of the indicator rod and prevent the indicator rod from coming out of the through hole.

[0019] Preferably, the bottom opening of the receiving tube has an inwardly extending inner edge;

[0020] The grating barrel has an outwardly extending outer edge at its opening;

[0021] When the grid barrel is fitted inside the receiving tube, the inner edge of the receiving tube and the outer edge of the grid barrel overlap each other, so that the grid barrel is detachably supported at the bottom of the receiving tube.

[0022] Preferably, the grid bucket is equipped with a handle at its opening to facilitate the removal of the grid bucket from the top opening of the receiving tube.

[0023] Preferably, the inner wall of the receiving tube is provided with a guide strip extending along its axial direction, and the outer periphery of the outer edge of the grid barrel is provided with an anti-misalignment groove.

[0024] When the grating barrel is installed inside the receiving tube, the guide strip engages within the anti-misalignment groove to position the grating barrel circumferentially.

[0025] Preferably, the bottom opening of the receiving pipe and the edge of the grid barrel are inclined to each other, so that the water outlet of the inlet pipe on the receiving pipe faces the side wall of the grid barrel.

[0026] Preferably, the bottom opening of the receiving pipe and the edge of the grid barrel are inclined in a corresponding manner, with the inclination direction being from the side where the water inlet pipe is located to the upper part of the opposite side;

[0027] The water outlet of the inlet pipe is directed toward the fan blades to drive the fan blades to rotate, thereby distributing the water to various parts of the grid barrel.

[0028] The beneficial effects of this utility model are:

[0029] Pollution Prevention: Because the bar screen is detachable and easy to clean, the filtered and collected suspended solids can be removed in a timely manner, effectively preventing the decomposition and odor caused by organic matter that is difficult to clean. At the same time, when this device is installed at the inlet of water treatment equipment, water pipes, etc., the bar screen is located inside the water treatment equipment, water pipes, etc., and the detachable cap is placed on the top of the receiving pipe, thus forming a relatively sealed structure, which reduces the leakage of pollutant odors to a certain extent and avoids air pollution.

[0030] Easy to clean: Since the bar screen is detachably installed at the bottom of the receiving tube through its rim, and the bar screen is equipped with a handle at the opening, when suspended matter accumulates inside the bar screen, the operator can directly remove the bar screen from the receiving tube through the handle for quick cleaning or rinsing; this design avoids the problem of suspended matter getting tangled and accumulating on the fixed bar screen, making cleaning difficult.

[0031] Easy to operate: The inner edge of the receiving tube at the bottom of the tube overlaps with the outer edge of the grating barrel at the opening, allowing the grating barrel to be stably and detachably supported inside the receiving tube. At the same time, the guide strip on the inner wall of the receiving tube cooperates with the anti-misalignment groove on the outer periphery of the grating barrel to achieve circumferential positioning of the grating barrel and ensure accurate installation. This structure makes the disassembly and replacement of the grating barrel simple and quick, reducing maintenance costs and time.

[0032] Efficient Collection: The bottom inlet and rim of the bar screen are angled, and the outlet of the inlet pipe faces the side wall of the bar screen. This design optimizes the liquid flow path, allowing suspended solids to be more evenly distributed inside the bar screen and reducing the risk of clogging. In addition, the liquid level indicator installed on the cap can detect whether there is water accumulation in the bar screen, helping operators monitor the filtration status and clean the bar screen in a timely manner, thereby improving the interception and collection efficiency of suspended solids. A rotating guide device is set to disperse the water from the inlet pipe to various parts of the bar screen, thereby preventing suspended solids from accumulating in specific parts of the bar screen. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of one embodiment of this application;

[0035] Figure 2 for Figure 1 Top view;

[0036] Figure 3 for Figure 2 Sectional view along axis AA;

[0037] Figure 4 This is a schematic diagram of the sealing cap structure in this application;

[0038] Figure 5 This is a schematic diagram of the liquid level indicator device in this application;

[0039] Figure 6 This is a schematic diagram of the structure of the receiving tube in this application;

[0040] Figure 7 This is a schematic diagram of the structure of the grating barrel in this application;

[0041] Figure 8 for Figure 1 Installation diagram of the structure shown;

[0042] Figure 9 In order to be in Figure 1 The diagram shows a structure with an added rotating guide device based on the original structure.

[0043] Among them, 1-accommodating pipe, 2-inlet pipe, 3-sealing cover, 4-grid barrel, 5-bolt, 6-notch, 7-hinge seat, 8-hinge shaft, 9-hinge component, 91-limiting protrusion, 10-indicator rod, 11-buoyancy block, 12-stop structure, 13-inner edge, 14-outer edge, 15-handle, 16-guide strip, 17-anti-misalignment groove, 18-sealing gasket, 19-rotating shaft, 20-fan blade. Detailed Implementation

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0046] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0047] Example 1

[0048] See Figures 1 to 8 This embodiment describes the basic technical solution that can achieve the purpose of this application.

[0049] A liquid suspension filtration and collection device includes a receiving tube 1, a sealing cap 3, and a grid tank 4;

[0050] The receiving tube 1 is a hollow tube structure with openings at the top and bottom and running through it. A water inlet pipe 2 is connected to its side wall. Liquid containing suspended matter flows into the receiving tube 1 from the water inlet pipe 2. The specific shape of the receiving tube 1 can be a round tube or a polygonal tube, etc., and there are no restrictions.

[0051] The sealing cap 3 is detachably installed at the top opening of the receiving tube 1 to seal the top opening of the receiving tube 1. The sealing cap 3 can be detachably connected by bolts 5, hinges 9 or buckles or other fastening structures, without restricting the fastening structure.

[0052] The bar screen 4 is a cylindrical structure made by interweaving several skeletons to form a bar screen. The opening of the bar screen 4 is located at its top. The side walls of the bar screen 4 are round or polygonal tubes, or the bar screen 4 is spherical in shape. However, the shape of the top edge of the bar screen 4 should be set according to the shape of the receiving pipe 1 so that the liquid containing suspended solids flowing into the receiving pipe 1 can only flow out after passing through the bar screen 4 under the action of gravity. The bar screen of the bar screen 4 plays a filtering role. Different mesh sizes can be set according to the filtration requirements. For example, when treating the fine suspended solids in domestic sewage after preliminary filtration by devices such as floor drains, a larger mesh size bar screen should be selected. The bar screen 4 can be detachably installed at the bottom opening of the receiving pipe 1 through its top edge. The specific detachable installation method can be bolted, snap-fitted, etc. The specific installation method of detachably installing the tubular component at the opening of the barrel-shaped component is existing technology, and no limitation is made here on the detachable installation method.

[0053] In use, the liquid suspension filtration and collection device can be installed at the inlet of water treatment equipment, connecting water pipes, etc. The water treatment equipment, connecting water pipes, etc. are connected to the outer periphery of the receiving pipe 1. The bottom opening of the receiving pipe 1 is located inside the water treatment equipment, connecting water pipes, etc., and the top opening of the receiving pipe 1 is equipped with a sealing cap 3, thereby forming a relatively sealed environment.

[0054] Liquid containing suspended solids flows into receiving pipe 1 from inlet pipe 2 and flows through grid barrel 4 under the action of gravity. The grid in grid barrel 4 is used to filter suspended solids in the liquid. Suspended solids that do not pass through grid barrel 4 accumulate and are collected in the inner cavity of grid barrel 4 and receiving pipe 1.

[0055] Example 2

[0056] Based on the above embodiment 1, this embodiment describes the specific structure of the sealing cap 3 that can be detachably covered to accommodate the receiving tube 1.

[0057] One method for removably attaching the sealing cap 3 to the top opening of the receiving tube 1 is as follows:

[0058] Several bolts 5 are hinged to the outer periphery of the top opening of the receiving tube 1, and several notches 6 are made on the edge of the sealing cover 3. The circumferential position of the notches 6 should correspond to the circumferential position of the bolts 5. During installation, the bolts 5 are rotated from their hinged parts so that the shank of the bolts 5 is inserted into the corresponding notches 6. Then, the nuts are tightened along the threads of the bolts 5 so that the nuts abut against the sealing cover 3. The sealing cover 3 and the receiving tube 1 can be detachably fixed by tightening the nuts. When removing the sealing cover 3, it is only necessary to loosen the nuts so that the shank of the bolts 5 is released from the opening of the notches 6 and is suspended on the outer periphery of the receiving tube 1 through its hinged parts, which is convenient for reinstallation or operation and reduces the complexity of disassembly and assembly.

[0059] When the sealing cap 3 is circular, the notches 6 are evenly distributed along the circumference; when the sealing cap 3 is polygonal, the notches 6 are preferably located at the included angle where the two sides of the sealing cap 3 intersect. For example, if the sealing cap 3 is rectangular, the notches 6 are located at the four corners of the rectangle, which facilitates the engagement of the bolts 5 and the sealing cap 3, and improves the stability of installation and ease of operation.

[0060] To better understand how the bolt 5 is hinged to the receiving tube 1, this embodiment further discloses the following structure: the outer periphery of the receiving tube 1 is provided with a plurality of radially extending hinge seats 7, the bottom of the bolt 5 is provided with a hinge shaft 8, the hinge shaft 8 is supported on the hinge seat 7, so that the bolt 5 can rotate freely at the hinge seat 7; specifically, the hinge seat 7 can be a double-ear hinge seat, the hinge shaft 8 perpendicular to the bolt 5 is supported in the two hinge ears of the hinge seat 7, and cotter pins are inserted at both ends of the hinge shaft 8 to prevent the hinge shaft 8 from falling out of the hinge seat 7.

[0061] Another method for removably attaching the sealing cap 3 to the top opening of the receiving tube 1 is as follows:

[0062] The sealing cap 3 is hinged to the top opening of the receiving tube 1 via a hinge 9. The hinge 9 can be a common hinge structure such as a hinge or chain, allowing the sealing cap 3 to be opened and closed without complete disassembly. A single hinge lug is provided on the sealing cap 3, and a double hinge lug is provided on the receiving tube 1. The hinge lug of the sealing cap 3 is inserted between the double hinge lugs of the receiving tube 1, and the three hinge lugs are coaxially mounted on the same connecting shaft, thereby achieving the hinge connection. Cotter pins are inserted at both ends of the connecting shaft to prevent the connecting shaft from retracting from the hinge lugs.

[0063] When the hinge 9 is a hinge, a limiting protrusion 91 may be provided on the hinge lug. The limiting protrusion 91 may extend radially along the hinge lug or be set parallel to the hinge axis. During the opening process, the limiting protrusion 91 abuts against the hinge seat or other hinge lugs to limit the opening angle of the sealing cover 3, prevent the sealing cover 3 from being over-opened or flipped, ensure operational safety and improve the durability of the device.

[0064] It is worth mentioning that the two detachable sealing cap methods mentioned above can be used individually or in combination. When used in combination, the sealing cap 3 is hinged to the receiving tube 1 by the hinge 9 and can be securely installed at the top opening of the receiving tube 1 by the bolt 5.

[0065] Example 3

[0066] Based on the above embodiment 1, this embodiment provides a liquid level indicator on the sealing cap 3.

[0067] The liquid level indicator includes an indicator rod 10 and a buoyancy block 11; the rod body of the indicator rod 10 slides along the through hole opened on the sealing cover 3, and its bottom end is connected to the buoyancy block 11; when the sealing cover 3 is placed on the top opening of the receiving tube 1, the buoyancy block 11 is located inside the receiving tube 1, and at this time the indicator rod 10 can slide axially along the through hole by the floating of the buoyancy block 11, and different lengths of the indicator rod 10 and the axial position of the buoyancy block 11 on the indicator rod 10 can be set.

[0068] One specific way to use the liquid level indicator is as follows: when the grid tank 4 is blocked by suspended matter, there will be liquid accumulation in the receiving tube 1. This liquid accumulation can drive the buoyancy block 11 to rise. Thus, the position of the indicator rod 10 can be used to determine whether there is liquid accumulation or the volume of liquid accumulation in the receiving tube 1. Alternatively, it can be set to drive the buoyancy block 11 to rise when the liquid accumulation reaches a certain volume. At this time, the indicator rod 10 floats up, thereby playing the role of liquid level alarm.

[0069] To prevent the indicator rod 10 from coming off the sealing cover 3 or moving excessively, a stop structure 12 can be provided at its top. Specifically, the stop structure can be a protrusion extending radially along the indicator rod 10, or a nut threaded onto the top of the indicator rod 10. The stop structure 12 and the buoyancy block 11 respectively cooperate with the upper and lower end faces of the sealing cover 3 to limit the axial travel of the indicator rod 10, ensuring that the indicator rod 10 always slides normally within the through hole, thereby achieving reliable liquid level indication.

[0070] Example 4

[0071] Based on the above embodiment 1, this embodiment describes the specific structure of the grid barrel 4 being detachably installed at the bottom opening of the receiving pipe 1.

[0072] The bottom opening of the receiving tube 1 is provided with an inwardly extending inner edge 13, and the opening of the grid barrel 4 is provided with an outwardly extending outer edge 14. The inner edge 13 and the outer edge 14 can be several circumferentially distributed extended protrusions, or they can form a continuous annular structure. When the grid barrel 4 is inserted into the receiving tube 1 from below or above, the inner edge 13 of the receiving tube 1 and the outer edge 14 of the grid barrel 4 form an overlapping support structure in the vertical direction. Through this overlapping method, the grid barrel 4 can be stably supported at the bottom position of the receiving tube 1, and can be easily disassembled and removed when needed.

[0073] Based on the foregoing in this embodiment, a handle 15 is connected to the opening of the grid bucket 4, which makes it easy for the operator to directly remove the grid bucket 4 from the top opening of the receiving tube 1 after opening the sealing cover 3, thereby achieving quick removal and reinstallation, further improving the convenience of operation and maintenance efficiency.

[0074] Based on the foregoing in this embodiment, in order to ensure that the grid barrel 4 can be correctly positioned during installation and to avoid directional errors, a guide strip 16 extending along its axial direction is provided on the inner wall of the receiving tube 1, and an anti-misalignment groove 17 is correspondingly opened on the outer periphery of the outer edge 14 of the grid barrel 4; when the grid barrel 4 is fitted into the receiving tube 1, the guide strip 16 and the anti-misalignment groove 17 are engaged with each other to achieve circumferential positioning of the grid barrel 4 and prevent the grid barrel 4 from rotating or misaligning.

[0075] Based on the above embodiments 1 to 4, the following common improvements are made:

[0076] The bottom opening of the receiving pipe 1 and the edge of the bar screen 4 are inclined in the same direction, from the side where the inlet pipe 2 is located to the opposite side at the top, so that the outlet of the inlet pipe 2 on the receiving pipe 1 faces the side wall of the bar screen 4. Specifically, the cross-section of the receiving pipe 1 intersects the plane where its bottom opening is located, and the plane where the edge of the bar screen 4 is located is parallel to the plane where the bottom opening of the bar screen 4 is located. By setting the outlet of the inlet pipe 2 towards the side wall of the bar screen 4, the incoming liquid impacts the side wall of the bar screen 4, reducing the direct impact force of the water from the inlet pipe 2 on the inner wall of the receiving pipe 1.

[0077] A sealing gasket 18 is provided on the contact surface of the sealing cap 3 and / or the contact surface of the receiving tube 1; the sealing gasket 18 is made of soft material, and by providing the sealing gasket 18 between the sealing cap 3 and the receiving tube 1, the sealing performance of the device can be effectively enhanced.

[0078] Example 5

[0079] See Figure 9 Based on the above embodiment 1, a rotating guide device was added to prevent suspended matter from accumulating in specific locations within the grid barrel 4.

[0080] The rotary guide device includes a rotating shaft 19, the top of which is supported on a sealing cover 3. Specifically, the sealing cover 3 is equipped with a rotary bearing, and the top of the rotating shaft 19 is clearance-fitted and supported within this rotary bearing. The top of the rotating shaft 19 is provided with a flange or other anti-detachment structure. When the sealing cover 3 is placed on the receiving tube 1, the rotating shaft 19 is supported on the sealing cover 3 by the flange or other anti-detachment structure on its top. The top of the rotating shaft 19 is clearance-fitted within the rotary bearing. When the sealing cover 3, which is hinged to the receiving tube 1, is opened, the rotating shaft 19 can be pulled to move it axially. This prevents interference between the rotating shaft 19 and the inner wall of the receiving tube 1, thus affecting the opening of the sealing cover 3. Furthermore, the way the top of the rotating shaft 19 is supported on the sealing cover 3 can be adapted. For example, the top of the rotating shaft 19 can be directly fitted into the through hole of the sealing cover 3 with a clearance fit, or a bushing made of sliding bearing material can be nested in the through hole. The bottom of the rotating shaft 19 is provided with a fan blade 20, but the arrangement of the fan blade 20 should not interfere with the handle 15. The water outlet of the water inlet pipe 2 is directed towards the fan blade 20 to drive the fan blade 20 to rotate, thereby dispersing the water outlet to various parts of the grid tank 4.

[0081] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for filtering and collecting suspended solids in liquid, characterized in that: include, A receiving pipe (1) is provided with a water inlet pipe (2) connected to the side wall of the receiving pipe (1). A sealing cap (3) is hinged to the top opening of the receiving tube (1) by a hinge (9) and is detachably placed on the top opening of the receiving tube (1). A grid barrel (4) is detachably mounted at the bottom opening of a receiving tube (1) via its top rim.

2. The liquid suspension filtration and collection device as described in claim 1, characterized in that: Several bolts (5) are hinged to the outer periphery of the top opening of the receiving tube (1); The sealing cap (3) has several notches (6) on its edge; The bolt (5) can fit into the corresponding notch (6) and, together with the nut, cover and fix the sealing cap (3) and the receiving tube (1).

3. The liquid suspension filtration and collection device as described in claim 1, characterized in that: The hinge (9) is a hinge, and the hinge lug of the hinge is provided with a limiting protrusion (91). The limiting protrusion (91) is used to limit the opening and closing angle of the sealing cap (3).

4. The liquid suspension filtration and collection device as described in claim 1, characterized in that: The sealing cap (3) is equipped with a liquid level indicator, which includes an indicator rod (10) and a buoyancy block (11). The rod of the indicator rod (10) is slidably fitted in the through hole of the sealing cap (3), and the bottom end of the indicator rod (10) is provided with the buoyancy block (11). When the sealing cap (3) is placed on the receiving tube (1), the buoyancy block (11) is located inside the receiving tube (1).

5. The liquid suspension filtration and collection device as described in claim 4, characterized in that: The top of the indicator rod (10) is provided with a stop structure (12). The stop structure (12) and the buoyancy block (11) respectively cooperate with the two end faces of the sealing cover (3) to limit the axial displacement of the indicator rod (10) and prevent the indicator rod (10) from coming out of the through hole.

6. The liquid suspension filtration and collection device as described in claim 1, characterized in that: The bottom opening of the receiving tube (1) is provided with an inwardly extending inner edge (13). The grating barrel (4) has an outwardly extending outer edge (14) at its opening. When the grid barrel (4) is fitted inside the receiving tube (1), the inner edge (13) of the receiving tube (1) and the outer edge (14) of the grid barrel (4) overlap each other, so that the grid barrel (4) is detachably supported at the bottom of the receiving tube (1).

7. The liquid suspension filtration and collection device as described in claim 6, characterized in that: The grid bucket (4) is connected to a handle (15) at the opening, which makes it easy to remove the grid bucket (4) from the top opening of the receiving tube (1).

8. The liquid suspension filtration and collection device as described in claim 6, characterized in that: The inner wall of the receiving tube (1) is provided with a guide strip (16) extending along its axial direction, and the outer periphery of the outer edge (14) of the grid barrel (4) is provided with an anti-misalignment groove (17). When the grid barrel (4) is fitted into the receiving tube (1), the guide strip (16) is fitted into the anti-misalignment groove (17) to position the grid barrel (4) circumferentially.

9. The liquid suspension filtration and collection device as described in claim 1, characterized in that: The bottom opening of the receiving pipe (1) and the edge of the grid barrel (4) are inclined in the same direction, from the side where the water inlet pipe (2) is located to the opposite side.

10. The liquid suspension filtration and collection device as described in claim 1, characterized in that: It also includes a rotating guide device, which includes a rotating shaft (19), the top of which is supported on the sealing cover (3), and a fan blade (20) is provided at the bottom. The water outlet of the inlet pipe (2) is directed toward the fan blade (20) to drive the fan blade (20) to rotate, thereby dispersing the water outlet to various parts of the grid bucket (4).

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