Filtering device and water pump

Abstract

The utility model belongs to filter device technical field discloses a filter device and water pump. Filter device includes cylinder, cylinder cover, filter core and filter screen. The top of cylinder is equipped with opening, and the bottom of cylinder is equipped with water outlet and first water inlet. The cylinder cover is blocked in the opening of the top of cylinder, and the second water inlet is equipped on the cylinder cover. The filter core is located in the cylinder and both ends abut respectively in the bottom of cylinder cover and cylinder, and the outside wall of filter core, the inner side wall of cylinder, the bottom wall of cylinder and cylinder cover surround and form first cavity, and first cavity communicates with first water inlet, the inner side wall of filter core, the inner top wall of cylinder cover and the bottom wall of cylinder surround and form second cavity. The filter screen is embedded in the second cavity and divides the second cavity into two parts along the axial direction of the cylinder, and the water outlet and the second water inlet communicate with the parts of the second cavity on both sides of the filter screen. The filter device has high filtering efficiency and good filtering effect, and can filter through the filter screen when the filter core is blocked, ensuring the filtering effect.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a filtration device and a water pump. Background Technology

[0002] A water pump is a fluid transport device that uses mechanical energy to move liquids (usually water or other fluids) from a low-pressure area to a high-pressure area, or to lift them from a low place to a high place. Typically, a filter is installed at the pump's inlet to prevent impurities in the liquid from entering and damaging the pump.

[0003] In existing water pumps, to prevent the pump from being unable to accept liquid when the filter element of the pump's filtration device becomes clogged, a partial opening is made in the filter element relative to the pump's inlet. As a result, although most of the liquid entering the pump is filtered, the liquid entering through the opening is not filtered and therefore impurities in that portion of the liquid may still enter the pump and damage it.

[0004] Therefore, there is an urgent need to develop a filtration device and a water pump to solve the above problems. Utility Model Content

[0005] The first objective of this invention is to provide a filtration device that can increase the water intake of the filtration device, achieve high filtration efficiency, perform secondary filtration with good filtration effect, and ensure filtration effect and extend the service life of the water pump when the filter element is clogged by filtering through the filter screen.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Filtering device, including:

[0008] The cylinder has an opening at its top and an outlet and a first inlet at its bottom.

[0009] A cap, which seals the opening at the top of the cylinder, and the cap is provided with a second water inlet;

[0010] The filter element is located inside the cylinder and its two ends abut against the cylinder cover and the bottom end of the cylinder body, respectively. The outer side wall of the filter element, the inner side wall of the cylinder body, the bottom wall of the cylinder body and the cylinder cover form a first cavity. The first cavity is connected to the first water inlet. The inner side wall of the filter element, the inner top wall of the cylinder cover and the bottom wall of the cylinder body form a second cavity.

[0011] A filter screen is embedded in the second cavity and divides the second cavity into two parts along the axial direction of the cylinder. The water outlet and the second water inlet are respectively connected to the portions of the second cavity located on both sides of the filter screen.

[0012] As an optional technical solution for the filtration device, there are multiple first water inlets, which are evenly spaced along the outer periphery of the outlet, and the outlet is positioned opposite to the second cavity.

[0013] As an optional technical solution for the filtration device, a first protrusion is provided between the water outlet and the first water inlet of the cylinder. The first protrusion extends along the outer circumference of the water outlet and is arranged in a closed loop. A first groove is provided on the side of the filter element facing the water outlet. The shape of the first groove is adapted to the shape of the first protrusion, and the first protrusion can be locked in the first groove.

[0014] As an optional technical solution for the filtration device, the cylinder cover includes a cover body and an edge. The edge is located on the side of the cover body facing the cylinder and extends circumferentially along the cover body and is arranged in a closed loop. The outer wall of the cylinder is connected to the inner wall of the edge, and the filter element abuts against the cover body.

[0015] As an optional technical solution for the filtration device, there are multiple second water inlets, which are evenly spaced along the outer periphery of the filter element, so that the multiple second water inlets are connected to the first cavity.

[0016] As an optional technical solution for the filtration device, the cylinder cover also includes multiple reinforcing members. The multiple reinforcing members are located on the side of the cover body facing the cylinder and are spaced apart and evenly arranged along the circumference of the filter element. The top wall of the filter element abuts against the multiple reinforcing members, and a second water inlet is provided between two adjacent reinforcing members.

[0017] As an optional technical solution for the filtration device, the reinforcing member includes a first blocking rib and multiple reinforcing ribs. The multiple reinforcing ribs are arranged at intervals along the circumference of the filter element and all extend radially along the filter element. The first blocking rib is connected to one end of the multiple reinforcing ribs and extends along the circumference of the filter element.

[0018] As an optional technical solution for the filtration device, the filter element is provided with a second groove on the side facing the cylinder cover. The second groove extends circumferentially along the filter element and is arranged in a closed loop. The reinforcing member also includes a second blocking rib. The second blocking rib is connected to multiple reinforcing ribs in sequence along the outer circumference of the first blocking rib, and the second blocking rib can be inserted into the second groove.

[0019] As an optional technical solution for the filtration device, the inner sidewall of the edge is provided with a plurality of first retaining strips, which are spaced apart circumferentially along the inner sidewall of the edge. The outer sidewall of the cylinder is provided with a plurality of second retaining strips, which are staggered with the first retaining strips. The cylinder cover and the cylinder are sealed together by the first retaining strips and the second retaining strips.

[0020] The second objective of this invention is to provide a water pump with a long service life.

[0021] To achieve this objective, the present invention adopts the following technical solution:

[0022] A water pump includes a pump body and the aforementioned filter device, wherein the cylinder is sealed to the pump body, and the outlet of the cylinder is connected to the inlet of the pump body.

[0023] The beneficial effects of this utility model are:

[0024] The filtration device provided by this utility model includes a cylinder, a cylinder cover, a filter element, and a filter screen. When the filtration device is in operation, water flows into the first cavity through the first inlet, is filtered by the filter element, and then flows into the second cavity. Water entering the second cavity below the filter screen flows directly out through the outlet, while water entering the second cavity above the filter screen is filtered again before flowing out through the outlet. Simultaneously, water can also enter the second cavity through the second inlet, be filtered by the filter screen within the second cavity, and then flow out through the outlet. Therefore, on the one hand, this filtration device can increase the water intake and filtration efficiency, and also allows some water to undergo two filtrations, improving the filtration effect. On the other hand, when the filter element becomes clogged, water can enter through the second inlet and be filtered by the filter screen, ensuring the filtration effect and extending the service life of the water pump. Attached Figure Description

[0025] Figure 1 This is an exploded view of the filtration device provided in an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional view of the filtration device provided in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the cylinder provided in this embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the cylinder cover provided in an embodiment of this utility model;

[0029] Figure 5 This is an assembly diagram of the filter element and filter screen provided in this embodiment of the utility model.

[0030] In the picture:

[0031] 100. Cylinder body; 110. Outlet; 120. First inlet; 130. First protrusion; 140. Second retaining strip; 200. Cylinder cover; 210. Cover body; 211. Second inlet; 220. Edge; 221. First retaining strip; 231. First blocking rib; 232. Reinforcing rib; 233. Second blocking rib; 300. Filter element; 310. Second groove; 400. Filter screen. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] This embodiment provides a filtration device that can increase the water intake of the filtration device, resulting in high filtration efficiency; it can also perform secondary filtration, providing good filtration effect; and when the filter element becomes clogged, it can filter through the filter screen to ensure filtration effect and extend the service life of the water pump.

[0037] Specifically, such as Figures 1 to 5 As shown, the filtration device includes a cylinder 100, a cover 200, a filter element 300, and a filter screen 400. The top of the cylinder 100 has an opening, and the bottom of the cylinder 100 has an outlet 110 and a first inlet 120. The cover 200 seals the opening at the top of the cylinder 100 and has a second inlet 211. The filter element 300 is located inside the cylinder 100, with both ends abutting against the cover 200 and the bottom of the cylinder 100, respectively. The outer wall of the filter element 300, the inner wall of the cylinder 100, the bottom wall of the cylinder 100, and the cover 200 form a first cavity, which communicates with the first inlet 120. The inner wall of the filter element 300, the inner top wall of the cover 200, and the bottom wall of the cylinder 100 form a second cavity. The filter screen 400 is embedded in the second cavity and divides the second cavity into two parts along the axial direction of the cylinder 100. The water outlet 110 and the second water inlet 211 are respectively connected to the parts of the second cavity located on both sides of the filter screen 400.

[0038] It should be noted that the filter device is usually installed on the top of the pump body. The top of the cylinder 100 refers to the end away from the pump body, and the bottom of the cylinder 100 refers to the end facing the pump body.

[0039] Based on the above design, when the filtration device is working, water flows into the first cavity through the first inlet 120, is filtered by the filter element 300, and then flows into the second cavity. Water entering the second cavity from below the filter screen 400 flows directly out through the outlet 110, while water entering the second cavity from above the filter screen 400 is filtered again by the filter screen 400 before flowing out through the outlet 110. Simultaneously, water can also enter the second cavity through the second inlet 211, be filtered by the filter screen 400 within the second cavity, and then flow out through the outlet 110. Therefore, on the one hand, this filtration device can increase the water intake and filtration efficiency, and also allow some water to undergo two filtrations, improving the filtration effect. On the other hand, when the filter element 300 becomes clogged, water can still enter through the second inlet 211 and be filtered by the filter screen 400, ensuring the filtration effect and extending the service life of the water pump.

[0040] Continue as Figure 2 and Figure 3 As shown, the cover 200, the cylinder 100 and the filter element 300 are all coaxially arranged, and the outlet 110 is located at the center of the bottom end of the cylinder 100, directly opposite the second cavity.

[0041] In this embodiment, the filter screen 400 is disposed in the second cavity by means of a mesh frame, and the mesh frame and the filter element 300 are coaxially arranged.

[0042] In one specific implementation, there are multiple first inlets 120, which are evenly spaced along the outer periphery of the outlet 110 and are positioned opposite to the second cavity. The multiple first inlets 120 and the first cavity are positioned opposite to each other, so that the water flow is evenly distributed along the side wall of the filter element 300, thereby improving the filtration effect of the filter element 300.

[0043] Of course, the first inlet 120 can also extend along the outer periphery of the outlet 110 and be arranged in a closed loop, and the outlet 110 is arranged opposite to the second cavity, and multiple first inlets 120 are arranged opposite to the first cavity.

[0044] Furthermore, a first protrusion 130 is provided between the outlet 110 and the first inlet 120 of the cylinder 100. The first protrusion 130 extends along the outer periphery of the outlet 110 and is arranged in a closed loop. A first groove is provided on the side of the filter element 300 facing the outlet 110 (i.e., the bottom end of the filter element 300). The shape of the first groove is adapted to the shape of the first protrusion 130. The first protrusion 130 can be locked in the first groove, which improves the sealing effect between the bottom end of the filter element 300 and the bottom end of the cylinder 100, and prevents the water flow from the first cavity from directly entering the second cavity and flowing out of the filter device without being filtered by the filter element 300. In this embodiment, the cylinder cover 200 includes a cover body 210 and an edge 220. The edge 220 is located on the side of the cover body 210 facing the cylinder 100, and the edge 220 extends circumferentially along the cover body 210 and is arranged in a closed loop. The outer side wall of the cylinder 100 is connected to the inner side wall of the edge 220. The filter element 300 abuts against the cover body 210, and the cylinder cover 200 is fastened to the cylinder 100, thereby improving the sealing performance between the cylinder cover and the cylinder 100, and thus improving the sealing performance of the filtration device.

[0045] In this embodiment, the bottom surface of the cylinder 100 is recessed towards the top of the cylinder 100, and the first water inlet 120 is disposed at the edge of the recessed groove. That is, the first water inlet 120 can extend from the groove wall of the recessed groove to the outer edge of the groove opening, thereby increasing the size of the first water inlet 120 and increasing the water intake.

[0046] It is worth noting that both the outlet 110 and the first protrusion 130 are located at the bottom of the aforementioned recessed groove.

[0047] In one specific implementation, the inner wall of the edge 220 is provided with a plurality of first retaining strips 221, which are spaced apart circumferentially along the inner wall of the edge 220. The outer wall of the cylinder 100 is provided with a plurality of second retaining strips 140, which are staggered with the first retaining strips 221. The cylinder cover 200 and the cylinder 100 are sealed together by the first retaining strips 221 and the second retaining strips 140, thereby improving the connection strength and sealing effect of the cylinder 100 and the cylinder cover 200.

[0048] Furthermore, there are multiple second inlets 211, which are evenly spaced along the outer periphery of the filter element 300, so that the multiple second inlets 211 are connected to the first cavity, thereby allowing the water flowing into the cylinder 100 from the second inlets 211 to also enter the first cavity and be filtered by the filter element 300, thus improving the filtration efficiency.

[0049] Furthermore, the cover 200 also includes multiple reinforcing members. These reinforcing members are located on the side of the cover body 210 facing the cylinder 100 and are spaced apart and evenly arranged along the circumference of the filter element 300. The top wall of the filter element 300 abuts against the multiple reinforcing members, and a second water inlet 211 is provided between two adjacent reinforcing members. On the one hand, the reinforcing members can increase the structural strength of the cover 200; on the other hand, a water flow channel is formed between two adjacent reinforcing members, allowing the water entering through the second water inlet 211 to flow into the second cavity.

[0050] For example, the number of reinforcing members can be two, three, or five, etc.

[0051] In one specific embodiment, the reinforcing member includes a first blocking rib 231 and multiple reinforcing ribs 232. The multiple reinforcing ribs 232 are arranged at intervals along the circumference of the filter element 300 and all extend radially along the filter element 300. The first blocking rib 231 is connected to one end of the multiple reinforcing ribs 232 and extends along the circumference of the filter element 300. Compared with the entire reinforcing block, the arrangement of the reinforcing ribs 232 and the first blocking rib 231 is more material-saving.

[0052] For example, the number of reinforcing ribs 232 can be two, three or four. In this embodiment, the number of reinforcing ribs 232 is three.

[0053] Furthermore, the filter element 300 has a second groove 310 on the side facing the cover 200. The second groove 310 extends circumferentially along the filter element 300 and is arranged in a closed loop. The reinforcing member also includes a second blocking rib 233. The second blocking rib 233 is connected to multiple reinforcing ribs 232 in sequence along the outer circumference of the first blocking rib 231, and the second blocking rib 233 can be inserted into the second groove 310. The second blocking rib 233 can increase the structural strength of the reinforcing member and also increase the sealing effect of the filter element 300 and the cover 200, preventing water from the first cavity from flowing directly into the second cavity after being filtered by the filter element 300.

[0054] It should be noted that the height of the filter screen 400 needs to be lower than the height of the second groove 310 to prevent water entering the second cavity from the second groove 310 from flowing out of the filter device without passing through the filter screen 400.

[0055] This embodiment also provides a water pump with a long service life.

[0056] Specifically, the water pump includes a pump body and the aforementioned filtration device. The cylinder 100 is sealed to the pump body, and the outlet 110 of the cylinder 100 is connected to the inlet of the pump body. Water flows into the first cavity through the first inlet 120, is filtered by the filter element 300, and then flows into the second cavity. Water entering the second cavity from below the filter screen 400 flows directly out through the outlet 110, while water entering the second cavity from above the filter screen 400 is filtered again by the filter screen 400 before flowing out through the outlet 110. Simultaneously, water can also enter the second cavity through the second inlet 211, be filtered by the filter screen 400 in the second cavity, and then flow out through the outlet 110. Because the cylinder 100 is sealed to the pump body, water can only enter the inlet of the pump body through the outlet 110 of the cylinder 100. Therefore, all water entering the pump is filtered, preventing impurities from entering and damaging the pump, thus extending its service life.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A filtration device, characterized in that, include: A cylindrical body (100) is provided with an opening at the top end and a water outlet (110) and a first water inlet (120) at the bottom end; A cap (200) is provided on the top opening of the cylinder (100) and a second water inlet (211) is provided on the cap (200). A filter element (300) is located inside the cylinder (100) and its two ends abut against the cylinder cover (200) and the bottom end of the cylinder (100) respectively. The outer side wall of the filter element (300), the inner side wall of the cylinder (100), the bottom wall of the cylinder (100) and the cylinder cover (200) form a first cavity. The first cavity is connected to the first water inlet (120). The inner side wall of the filter element (300), the inner top wall of the cylinder cover (200) and the bottom wall of the cylinder (100) form a second cavity. A filter screen (400) is embedded in the second cavity and divides the second cavity into two parts along the axial direction of the cylinder (100). The water outlet (110) and the second water inlet (211) are respectively connected to the parts of the second cavity located on both sides of the filter screen (400).

2. The filtration device according to claim 1, characterized in that, The number of first inlets (120) is multiple, and the multiple first inlets (120) are evenly spaced along the outer periphery of the outlet (110), and the outlet (110) is arranged opposite to the second cavity, and the multiple first inlets (120) are arranged opposite to the first cavity.

3. The filtration device according to claim 2, characterized in that, A first protrusion (130) is provided between the water outlet (110) and the first water inlet (120) of the cylinder (100). The first protrusion (130) extends along the outer periphery of the water outlet (110) and is arranged in a closed loop. The filter element (300) is provided with a first groove on the side facing the water outlet (110). The shape of the first groove is adapted to the shape of the first protrusion (130), and the first protrusion (130) can be locked in the first groove.

4. The filtration device according to claim 1, characterized in that, The cap (200) includes a cap body (210) and an edge (220). The edge (220) is located on the side of the cap body (210) facing the cylinder (100), and the edge (220) extends circumferentially along the cap body (210) and is arranged in a closed loop. The outer wall of the cylinder (100) is connected to the inner wall of the edge (220), and the filter element (300) abuts against the cap body (210).

5. The filtration device according to claim 4, characterized in that, The number of second water inlets (211) is multiple, and the multiple second water inlets (211) are evenly spaced along the outer periphery of the filter element (300) so that the multiple second water inlets (211) are in communication with the first cavity.

6. The filtration device according to claim 5, characterized in that, The cover (200) also includes a plurality of reinforcing members, which are located on the side of the cover body (210) facing the cylinder (100) and are spaced apart and evenly arranged along the circumference of the filter element (300). The top wall of the filter element (300) abuts against the plurality of reinforcing members, and a second water inlet (211) is provided between two adjacent reinforcing members.

7. The filtration device according to claim 6, characterized in that, The reinforcing member includes a first blocking rib (231) and multiple reinforcing ribs (232). The multiple reinforcing ribs (232) are arranged at intervals along the circumference of the filter element (300) and all extend radially along the filter element (300). The first blocking rib (231) is connected to one end of the multiple reinforcing ribs (232) and extends along the circumference of the filter element (300).

8. The filtration device according to claim 7, characterized in that, The filter element (300) has a second groove (310) on the side facing the cylinder cover (200). The second groove (310) extends circumferentially along the filter element (300) and is arranged in a closed loop. The reinforcing member also includes a second blocking rib (233). The second blocking rib (233) is connected to multiple reinforcing ribs (232) in sequence along the outer circumference of the first blocking rib (231), and the second blocking rib (233) can be inserted into the second groove (310).

9. The filtration device according to claim 4, characterized in that, The inner wall of the edge (220) is provided with a plurality of first locking strips (221), which are spaced apart circumferentially along the inner wall of the edge (220). The outer wall of the cylinder (100) is provided with a plurality of second locking strips (140), which are staggered with the first locking strips (221). The cylinder cover (200) and the cylinder (100) are sealed together by the first locking strips (221) and the second locking strips (140).

10. A water pump, characterized in that, The device includes a pump body and a filter device according to any one of claims 1-9, wherein the cylinder (100) is sealed to the pump body, and the outlet (110) of the cylinder (100) is connected to the inlet of the pump body.

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