Impurity removing, filtering and draining device

Abstract

The utility model provides an impurity removing, filtering and draining device. A water storage cavity is formed in a barrel, and a filtering outlet communicated with the water storage cavity is formed in the side wall of the barrel; the filter cover is coaxially arranged in the water storage cavity and is provided with a filter cavity with an open top, and a first filter hole group penetrating to the water storage cavity is formed in the circumferential side wall of the filter cover; the water inlet end of the water inlet pipe is connected with an external water source, and the water outlet end extends to the top opening of the filtering cavity; the water outlet pipe is sequentially provided with a water inlet port, a slag discharge port and a backflow port which are communicated with the filtering cavity; the impurity accumulation box is detachably mounted below the residue discharge port; two ends of the liquid return pipe are respectively communicated with the backflow port and the water storage cavity; the sliding type filtering assembly comprises a columnar filtering block in sliding sealing fit in the water outlet pipe and an electric push rod for driving the columnar filtering block to axially slide between the filtering position and the sealing position in the water outlet pipe. The utility model provides an impurity-removing, filtering and draining device, which can realize zero-shutdown slag removal while ensuring high-flow drainage.

Description

TECHNICAL FIELD

[0001] The utility model relates to drainage device technical field, concretely relates to a kind of impurity filtering drainage device. BACKGROUND

[0002] In the field of water conservancy projects, drainage device is the core equipment of flood control, foundation pit dewatering, farmland de-impurity and other scenes, which quickly drains accumulated water through pumping pipe to prevent water disaster. However, in actual operation, accumulated water often contains impurities such as silt, dry branches and gravel, and traditional drainage equipment faces severe challenges: if the pumping pipe inlet inserted directly into the accumulated water is not protected, it is easy to be blocked by debris (such as plastic bags wrapping pump head, silt deposition blocking pipeline), resulting in sharp reduction of pumping flow, for example, in a certain city waterlogging rescue, the drainage efficiency decreased by 70% due to tree leaves blocking the water pump; hard particles entering the pump body with water flow can also aggravate equipment wear, and the maintenance cycle of centrifugal pump is shortened to 200 hours under the condition of pumping and draining mud water with sand content > 5%. Although the existing protection scheme such as cage filter screen can intercept part of the impurities, it needs to be lifted and disassembled regularly for manual deslagging, and in a certain river dredging project, the filter screen needs to be cleaned for 15 minutes every hour, which seriously delays the progress; frequent maintenance in emergency scenes (such as flood and piping) may directly aggravate the danger. SUMMARY

[0003] The problem to be solved by the utility model is to provide a kind of impurity filtering drainage device, which can ensure large flow drainage and realize zero downtime deslagging.

[0004] The technical scheme adopted by the utility model to solve the above problem is as follows: an impurity filtering drainage device comprises:

[0005] A cylinder body forms a water storage cavity inside, and the side wall is provided with a filtering outlet communicating with the water storage cavity;

[0006] A filter cover is coaxially arranged in the water storage cavity, and has a filtering cavity with an open top, and the circumferential side wall is provided with a first filter hole group penetrating into the water storage cavity;

[0007] A water inlet pipe is connected to an external water source at the water inlet end, and the water outlet end extends to the top opening of the filtering cavity;

[0008] An outlet pipe is provided with a water inlet port, a deslagging port and a backflow port in sequence and communicating with the filtering cavity;

[0009] An impurity storage box is detachably installed below the deslagging port;

[0010] A liquid return pipe communicates with the backflow port and the water storage cavity at both ends;

[0011] The sliding filter assembly comprises a cylindrical filter block in sliding sealing fit in the outlet pipe, and an electric push rod driving the cylindrical filter block to axially slide between a filtering position and a closed position in the outlet pipe, the filter block is hollow inside to form a liquid return cavity, and a first filter hole group for connecting the liquid return cavity and the outlet pipe is arranged at the front end of the filter block, a return port for connecting the liquid return pipe and the return port is arranged in the middle part of the filter block, and a blocking surface covering the residue discharge port when in the closed position is arranged at the tail end of the filter block.

[0012] Water flow is introduced into the filtering cavity in the filter cover through the water inlet pipe connected with the water source to be filtered, and then the water flow enters the water storage cavity through the first filter hole group in the circumferential side wall of the filter cover after large-particle impurities in the water flow are screened out, while the water flow containing impurities in the filtering cavity continues to enter the outlet pipe from the water inlet port, and at this time, the filter block is in the filtering position in the outlet pipe, the water flow containing impurities continues to move towards the residue discharge port and the cylindrical filter block, the water flow enters the liquid return cavity through the second filter hole group, and then enters the water storage cavity through the liquid return pipe, while the filtered water flow containing impurities is gathered in the impurity collection box from the residue discharge port; when maintenance is needed, the electric push rod drives the cylindrical filter block to the closed position, the blocking surface gradually closes the residue discharge port, at this time, the impurity collection box is disassembled and the impurities inside are cleaned, and meanwhile, the first filter hole group can continue to filter without affecting the water flow and reducing water waste.

[0013] Further, the front end of the cylindrical filter block is further provided with a guide surface, the guide surface faces the residue discharge port when the cylindrical filter block is in the filtering position, and the second filter hole group is arranged on the guide surface, when the water flow impacts the filter block, the water flow enters the liquid return cavity through the second filter hole group, and large-particle impurities (such as sand and fiber) that do not pass through the second filter hole group slide along the guide surface to the residue discharge port.

[0014] Further, the filter cover is provided with an annular positioning flange in interference fit with the clamping groove in the inner wall of the cylinder, and a fluororubber sealing ring is arranged on the flange contact surface, so that the positioning accuracy, sealing performance, maintenance convenience and equipment life are comprehensively improved.

[0015] Further, a flange plate is welded at the outlet end of the residue discharge port, and the inlet end of the impurity collection box is matched with a counter-welded flange, the two are fastened through uniformly distributed bolts, and the detachable connection is realized through the opposite bolt fastening of the flange plate and the flange.

[0016] Further, a sealing groove recessed inward is arranged around the edge of the flange plate, and a sealing ring is arranged in the sealing groove, so that the sealing connection is realized through the cooperation of the sealing groove and the sealing ring, and the water flow is prevented from seeping out. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a sectional view of the cylindrical filter block of the utility model moving to the filtering position;

[0018] Figure 2 for Figure 1 A magnified view of the circled area;

[0019] Figure 3 This is a cross-sectional view of the columnar filter block of this utility model when it is moved to the closed position.

[0020] Diagram: 1. Cylinder; 1.1. Water storage chamber; 1.2. Filter outlet; 1.3. Snap-fit ​​groove; 1.4. Fluororubber sealing ring; 2. Filter cover; 2.1. Filter chamber; 2.2. First filter hole group; 2.3. Annular positioning flange; 3. Water inlet pipe; 4. Water outlet pipe; 4.1. Water inlet port; 4.2. Slag discharge port; 4.3. Return port; 4.4. Flange; 4.4.1. Sealing groove; 4.4.2. Sealing ring; 5. Accumulation box; 5.1. Flange; 6. Return pipe; 7. Sliding filter assembly; 7.1. Columnar filter block; 7.1.1. Return chamber; 7.1.2. Second filter hole group; 7.1.3. Return port; 7.1.4. Sealing surface; 7.1.5. Guide surface; 7.2. Electric push rod; 100. Filter position; 200. Closed position. Detailed Implementation

[0021] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0022] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0023] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

[0024] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0025] Please see Figures 1 to 3A cleaning, filtration, and drainage device, whose structure mainly includes a cylinder 1, a filter cover 2, an inlet pipe 3, an outlet pipe 4, a collection box 5, a return pipe 6, and a sliding filter assembly 7. The cylinder 1 forms a water storage chamber 1.1 inside, and its bottom side wall has a filter outlet 1.2 communicating with the water storage chamber 1.1. The inner wall of the cylinder 1 has an annular snap-fit ​​groove 1.3. The filter cover 2 is coaxially arranged in the water storage chamber 1.1. Its circumferential side wall has a first filter hole group 2.2 evenly distributed. The top is open to form the filter chamber 2.1. The bottom is press-fitted with the snap-fit ​​groove 1.3 on the inner wall of the cylinder 1 through an annular positioning flange 2.3. The flange 5.1 is fitted with a fluororubber sealing ring 1.4 to enhance the sealing performance. The inlet end of the water inlet pipe 3 is connected to an external water source, and the outlet end extends to the top opening of the filter chamber 2.1, so that the water flows vertically into the filter chamber 2.1. The outlet pipe 4 has an inlet port 4.1 (connecting to the filter chamber 2.1), a slag discharge port 4.2 (with a detachable debris box 5 installed below), and a return port 4.3 (connecting to the return liquid pipe 6) in sequence along the water flow direction. The slag discharge port 4.2 can be detachably installed. The flange 4.4 at the outlet end is welded to the flange 5.1 at the upper opening of the sediment collection box 5. The flange 5.1 is installed opposite to the flange 4.4 and is locked with fastening screws. The mating surface of the flange 4.4 and the flange has an annular sealing groove 4.4.1 and a built-in sealing ring 4.4.2. The sliding filter assembly 7 consists of a columnar filter block 7.1 and an electric push rod 7.2. The columnar filter block 7.1 is hollow inside to form a return liquid chamber 7.1.1. Its first end is provided with an inclined guide surface 7.1.5 with a second filter hole group 7.1.2. Water with impurities is impacted by the guide surface 7.1.5 and then guided to the slag discharge port 4.2 and flows into the sediment collection box 5 for deposition. The columnar filter block 7.1.1 has a return port 7.1.3 in the middle and a sealing surface 7.1.4 at the tail end. It is driven by the electric push rod 7.2 to slide axially in the water outlet pipe 4, realizing the switching between the filtration position 100 and the closed position 200 (the sealing surface 7.1.4 completely covers the slag discharge port 4.2).

[0026] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A device for cleaning, filtering, and draining wastewater, characterized in that, include: The cylinder (1) has a water storage chamber (1.1) inside and a filter outlet (1.2) communicating with the water storage chamber (1.1) on its side wall; The filter cover (2) is coaxially disposed in the water storage cavity (1.1), and has a top-open filter cavity (2.1), and its circumferential sidewall is provided with a first filter hole group (2.2) that penetrates into the water storage cavity (1.1); The inlet pipe (3) is connected to an external water source at its inlet end and extends to the top opening of the filter chamber (2.1) at its outlet end. The water outlet pipe (4) is provided with an inlet port (4.1), a slag discharge port (4.2), and a return port (4.3) that are connected to the filter chamber (2.1) in sequence. The slag collection box (5) is detachably installed below the slag discharge port (4.2); The return pipe (6) is connected at both ends to the return port (4.3) and the water storage chamber (1.1); A sliding filter assembly (7) includes a columnar filter block (7.1) that slides and seals within an outlet pipe (4), and an electric push rod (7.2) that drives the columnar filter block (7.1) to slide axially between a filtration position (100) and a closed position (200) within the outlet pipe (4). The filter block has a hollow interior forming a return liquid chamber. 7.1.1), and its first end is provided with a second filter hole group for connecting the return liquid chamber (7.1.1) and the outlet pipe (4). 7.1.2) A return port (7.1.3) is provided in the middle for connecting the return pipe (6) and the return port (4.3), and the tail end is provided to cover the slag discharge port (4.2) when it is in the closed position (200) (7.1.4).

2. The impurity removal, filtration, and drainage device according to claim 1, characterized in that, The columnar filter block (7.1) is also provided with a guide surface (7.1.5) at its head end. When the columnar filter block (7.1) is in the filtration position (100), the guide surface (7.1.5) faces the slag discharge port (4.2). The second filter hole group (7.1.2) is opened on the guide surface (7.1.5).

3. The impurity removal, filtration, and drainage device according to claim 1, characterized in that, The filter cover (2) is provided with an annular positioning flange (2.3) at the bottom, which is press-fitted with the snap groove (1.3) on the inner wall of the cylinder (1), and a fluororubber sealing ring (1.4) is provided on the contact surface of the flange (5.1).

4. The impurity removal, filtration, and drainage device according to claim 1, characterized in that, The slag discharge port (4.2) has a welded flange (4.4) at the outlet end, and the slag collection box (5) has a matching butt-welded flange (5.1) at the inlet end. The two are fastened together by evenly distributed bolts.

5. The impurity removal, filtration, and drainage device according to claim 4, characterized in that, The mating surface of the flange (4.4) has an inwardly recessed sealing groove (4.4.1) around its edge, and a sealing ring (4.4.2) is placed in the sealing groove (4.4.1).

Images