CN219299643U - Filter, water pump shell assembly and drainage pump - Google Patents
Filter, water pump shell assembly and drainage pump Download PDFInfo
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- CN219299643U CN219299643U CN202320619246.1U CN202320619246U CN219299643U CN 219299643 U CN219299643 U CN 219299643U CN 202320619246 U CN202320619246 U CN 202320619246U CN 219299643 U CN219299643 U CN 219299643U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The utility model discloses a filter, a water pump shell assembly and a drainage pump, which comprises a sealing cover and an inner support, wherein the sealing cover and the inner support are integrally injection molded, one axial end, close to the water flow output direction, of the inner support is provided with one or more foreign matter scraping structures, the sealing cover is positioned at the other axial end of the inner support, the foreign matter scraping structures extend towards the central axis direction of the inner support, and a space for accommodating the foreign matter preventing structures in the water pump shell assembly is reserved in the center of the inner support. According to the filter, the water pump shell assembly and the drainage pump, the sealing cover and the inner support are of an integrated structure, so that the process that the sealing cover and the inner support are assembled firstly is omitted, and the labor cost is reduced.
Description
Technical Field
The utility model relates to the technical field of water pump design, in particular to a filter, a water pump shell assembly and a drainage pump.
Background
In the prior art, the water pump housing assembly is composed of a pump housing 4 and a cover assembly, wherein the cover assembly is further detachable into a cover 1, an inner bracket 2 and a sealing gasket 3, as shown in fig. 1 and 2.
The water pump shell component used at present, the sealing cover and the inner bracket are movably connected, the disassembly and assembly procedures are more, and when foreign matters are cleaned, the sealing cover rotates, the inner bracket is not moved, then the sealing cover component is directly pulled out, and the foreign matters at other positions in the pump shell cannot be effectively cleaned.
Secondly, the water pump shell component of the prior art, the foreign matter prevention structure is arranged on the inner support, when overhauling, the sealing cover component is required to be unscrewed, a hand stretches into the pump shell, as the hole in the pump shell, which is positioned at the impeller, is larger, fingers easily stretch into and touch the impeller, if the maintenance is carried out, the power is not cut off, and the impeller is easy to cut the fingers, so that the safety is lower.
Therefore, there is a need for a water pump housing assembly that is simple, efficient to install, safe, and simple to clean from foreign objects.
Disclosure of Invention
In order to solve the technical problems that in the prior art, a sealing cover component in a water pump shell component is of a detachable structure, when foreign matters are cleaned, the sealing cover rotates, an inner support is fixed, so that the installation efficiency is low, and the foreign matters are difficult to clean, the utility model provides a filter, the water pump shell component and a drainage pump to solve the problems.
The utility model provides a filter, which comprises a sealing cover and an inner bracket, wherein the sealing cover and the inner bracket are integrally injection molded, one axial end, close to the water flow output direction, of the inner bracket is provided with one or more foreign matter scraping structures, the sealing cover is positioned at the other axial end of the inner bracket, the foreign matter scraping structures extend towards the central axis direction of the inner bracket, and a space for accommodating the foreign matter preventing structures in a water pump shell assembly is reserved in the center of the inner bracket.
Further, the foreign matter scraping structure is provided with one or more axially distributed matching surfaces, and the matching surfaces face to the central shaft of the inner bracket and are in clearance fit with the outer peripheral surface of the foreign matter preventing structure.
Further, the foreign matter scraping structure comprises a radial rod and an inclined rod which are connected with each other, the radial rod extends along the radial direction of the inner support and is connected with the inner peripheral wall of the inner support, the inclined rod is connected with the end face of the inner support, and the matching surface is positioned on the radial inner end face of the radial rod.
Further, a reinforcing rib is connected between the radial rod and the inclined rod.
Further, one side of the inclined rod, which faces the central shaft of the inner bracket, is provided with one or more protruding blocks, and the protruding blocks are in clearance fit with the outer peripheral surface of the foreign matter preventing structure.
The utility model also provides a water pump shell assembly which comprises a pump shell and the filter, wherein the pump shell comprises a rear pump body and a front pump body which are mutually communicated, a water inlet is formed in the rear pump body, a water outlet is formed in the front pump body, and the filter is positioned in the rear pump body and is in threaded connection with the rear pump body; the one end of back pump body towards the front pump body has the protruding foreign matter structure that prevents that just axially link up to the filter direction, prevent that the foreign matter structure is located the inboard of scraping the foreign matter structure.
Further, the foreign matter prevention structure is a truncated cone-shaped structure with the outer diameter gradually reduced from one end close to the front pump body to one end far away from the front pump body.
Further, a plurality of grid holes are formed in the side wall of the foreign matter preventing structure.
Further, each of the mesh holes has a cross-sectional area of 50mm 2 ～70mm 2 。
Further, the size of the inlet inner diameter B of the foreign matter prevention structure is 8 mm-12 mm.
Further, the outer peripheral surface of the sealing cover is provided with external threads matched with the rear pump body.
The utility model also provides a drainage pump which comprises the drainage pump shell assembly.
The beneficial effects of the utility model are as follows:
(1) According to the filter, the water pump shell assembly and the drainage pump, the sealing cover and the inner support are of an integrated structure, so that the process that the sealing cover and the inner support are assembled firstly is omitted, and the labor cost is reduced.
(2) According to the utility model, the original foreign matter preventing structure on the inner support is adjusted to the pump shell, the sealing cover is unscrewed during maintenance, and the impeller cannot be touched even if a hand is inserted, so that the safety is greatly improved.
(3) In the utility model, one or more foreign matter scraping structures are arranged on the inner bracket, and the structures can clean foreign matters in the inner bracket along with the rotation of the sealing cover, so that the cleaning range is enlarged.
(4) In the utility model, the foreign matter scraping structure rotates upwards in a spiral way along the outer surface of the foreign matter preventing structure when the sealing cover rotates, and brings out some soft foreign matters when passing through a plurality of grid holes formed in the foreign matter preventing structure.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is an exploded view of a prior art water pump housing assembly;
FIG. 2 is a schematic view of a prior art closure assembly;
FIG. 3 is a perspective view of an embodiment of a water pump housing assembly according to the present utility model;
FIG. 4 is an axial cross-sectional view of an embodiment of a water pump housing assembly according to the present utility model;
FIG. 5 is a perspective view of a filter according to the present utility model;
FIG. 6 is an enlarged view of FIG. 5 at I;
FIG. 7 is a front view of a filter according to the present utility model;
FIG. 8 is an axial cross-sectional view of the pump housing of the present utility model;
fig. 9 is a top view of the pump housing of the present utility model.
In the figure, 1, a sealing cover, 2, an inner support, 3, a sealing gasket, 4, a pump shell, 401, a rear pump body, 402, a front pump body, 403, a water inlet, 404, a water outlet, 5, a foreign matter prevention structure, 6, grid holes, 7, a foreign matter scraping structure, 701, a radial rod, 702, an inclined rod, 703, reinforcing ribs, 704, a bump, 8, a matching surface, 9 and a passage opening.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
As shown in fig. 3 to 7, a filter comprises a cover 1 and an inner bracket 2 which are integrally injection molded, one end, close to the water flow output direction, of the inner bracket 2 in the axial direction is provided with one or more foreign matter scraping structures 7, the cover 1 is positioned at the other end, close to the water flow output direction, of the inner bracket 2, the foreign matter scraping structures 7 extend towards the central axis direction of the inner bracket 2, and a space for accommodating the foreign matter preventing structures 5 in a water pump shell assembly is reserved in the center of the inner bracket 2.
The inner bracket 2 is connected with the sealing cover 1 and has the function of fixing and supporting the pump shell 4. Compared with the original separated sealing cover 1 assembly, one installation process can be saved, and labor cost is reduced. The filter is installed in the inside water inlet one side of pump case 4, and rivers reachs impeller department after being filtered by the filter, and rivers output on the inner support 2 is close to the impeller promptly, and closing cap 1 and inner support 2 integrated into one piece, when rotatory closing cap 1, inner support 2 and closing cap 1 are rotatory together, take out along with the rotation of filter, and the foreign matter scraping structure 7 on the inner support 2 is outside from the inside outside motion to the pump case 4 of pump case 4 to can take away the inside impurity of pump case 4, improve cleaning performance. In addition, the filter is not provided with the foreign matter preventing structure 5, but a space for the foreign matter preventing structure 5 is reserved in the center of the inner bracket 2, when the inner bracket 2 rotates, the foreign matter scraping structure 7 and the foreign matter preventing structure 5 move relatively, and impurities and soft foreign matters on the surface of the foreign matter preventing structure 5 can be taken away.
The foreign matter scraping structure 7 is preferably in clearance fit with the foreign matter preventing structure 5, and the foreign matter scraping structure 7 is provided with one or more axially distributed matching surfaces 8, wherein the matching surfaces 8 face towards the central shaft of the inner bracket 2 and are in clearance fit with the outer peripheral surface of the foreign matter preventing structure 5 in the water pump shell assembly. The matching surface 8 is not contacted with the outer peripheral surface of the foreign matter preventing structure 5, but the gap between the matching surface and the foreign matter preventing structure 5 is smaller, so that foreign matters on the surface of the foreign matter preventing structure 5 can be taken away.
According to the conventional shape (generally, a circular truncated cone shape) of the foreign matter preventing structure 5, the mating surface 8 is preferably a curved surface, and when the inner bracket 2 rotates, the foreign matter scraping structure 7 rotates relative to the foreign matter preventing structure 5, and the curved mating surface 8 can ensure that the gaps are equal in the rotating process. When the mating surface 8 is small in size, the mating surface 8 may also be planar.
For convenience of description, the front part of the water flow output direction is taken as the front part, and the rear part is taken as the rear part.
Example 1
As shown in fig. 3 to 7, a filter comprises a sealing cover 1 and an inner bracket 2 which are integrally injection molded, wherein two foreign matter scraping structures 7 are arranged at one axial end (namely, the front end of the inner bracket 2) of the inner bracket 2, which is close to the water flow output direction, the sealing cover 1 is positioned at the other axial end of the inner bracket 2, the two foreign matter scraping structures 7 are symmetrically arranged relative to the central axis of the inner bracket 2, the foreign matter scraping structures 7 extend towards the central axis direction of the inner bracket 2, and a space for accommodating the foreign matter preventing structures 5 in a water pump shell assembly is reserved at the center of the inner bracket 2.
The inner bracket 2 is positioned inside the pump housing 4, the side surface of the inner bracket 2 is not closed and axially penetrates, and liquid flowing in from the water inlet 403 on the side of the pump housing 4 can flow into the inner bracket 2 through the side wall of the inner bracket 2. The closure 1 is injection moulded to the end of the inner frame 2.
In this embodiment, as shown in fig. 5 and 6, the foreign matter scraping structure 7 includes a radial rod 701 and a diagonal rod 702 connected to each other, the radial rod 701 extends in the radial direction of the inner bracket 2 and is connected to the inner peripheral wall of the inner bracket 2, the diagonal rod 702 is connected to the end surface of the inner bracket 2, and the mating surface 8 is located on the radially inner end surface of the radial rod 701. One end of the inclined rod 702 is connected with the radial rod 701, the other end is connected with the front end face of the inner support 2, and the inclined rod 702 is inclined at a certain angle with the central axis of the inner support 2, so that the collision of the round table-shaped foreign matter preventing structure 5 is avoided.
Preferably, a reinforcing rib 703 is connected between the radial rod 701 and the diagonal rod 702.
In a further design, one side of the inclined rod 702 facing the central axis of the inner bracket 2 is provided with one or more protruding blocks 704, the protruding blocks 704 are in clearance fit with the outer peripheral surface of the foreign matter prevention structure 5, and when the protruding blocks 704 rotate along with the sealing cover 1, the protruding blocks 704 rotate upwards in a spiral mode along with the truncated cone-shaped foreign matter prevention structure 5 of the foreign matter prevention structure 5, so that foreign matter on the outer surface of the foreign matter prevention structure 5 is carried out.
Example two
The water pump shell assembly comprises a pump shell 4 and the filter, wherein the pump shell 4 comprises a rear pump body 401 and a front pump body 402 which are mutually communicated, a water inlet 403 is formed in the rear pump body 401, a water outlet 404 is formed in the front pump body 402, and the filter is positioned in the rear pump body 401 and is in threaded connection with the rear pump body 401; the rear pump body 401 has a foreign matter preventing structure 5 protruding in the filter direction and penetrating axially toward one end of the front pump body 402, and the foreign matter preventing structure 5 is located inside the foreign matter scraping structure 7. As shown in fig. 4 and 5, the outer peripheral surface of the closure 1 is provided with external threads that mate with the rear pump body 401.
The front pump body 402 is internally provided with an impeller, the joint of the front pump body 402 and the rear pump body 401 is provided with a passage opening 9, the foreign matter preventing structure 5 is arranged at the passage opening 9, water flow enters the rear pump body 401 from the water inlet 403, enters the front pump body 402 through a central through passage of the foreign matter preventing structure 5, and finally is discharged from the water outlet 404 through the action of the impeller.
As shown in fig. 8, the foreign matter prevention structure 5 is a truncated cone-shaped structure in which the outer diameter gradually decreases from one end near the front pump body 402 to one end far from the front pump body 402. The reducing design of the foreign matter preventing structure 5 is beneficial to pushing out sundries outwards, and meanwhile sundries can be prevented from being accumulated on the front end face of the foreign matter preventing structure 5.
In this embodiment, a truncated cone-shaped foreign matter preventing structure 5 protruding toward the filter side is provided in the pump housing 4, and the size of the inlet inner diameter B of the foreign matter preventing structure 5 is preferably 8mm to 12mm (as shown in fig. 9), which meets the requirements of the standard test fingers.
The existing water pump shell component is also provided with a foreign matter preventing structure 5, but the structure is designed on the inner bracket 2, and the scheme has certain potential safety hazard. During maintenance, the inner bracket 2 and the sealing cover 1 need to be unscrewed, and hands need to be inserted into the pump shell 4. At this time, since there is no blocking of any object, and the passage opening 9 at the rear of the impeller is large, fingers can easily touch the impeller no matter the impeller is straightened or bent, if the impeller is operated improperly, the impeller which rotates at high speed is not powered off, and the fingers can be scratched easily, so that a safety accident is caused. The utility model can put an end to the potential safety hazard, the foreign matter preventing structure 5 is positioned behind the impeller in the pump shell 4, the impeller and fingers can be effectively separated, the size of the inner diameter B of the inlet of the foreign matter preventing structure 5 is preferably 8-12 mm, even if the fingers are straightened, the fingers do not touch the impeller, and the potential safety hazard problem in the original design is effectively solved. The preferred value of the inlet inner diameter B of the foreign matter prevention structure 5 of this embodiment is 12mm, and the flow is not affected while preventing the finger from extending in.
Preferably, a sealing gasket 3 is arranged between the filter and the pump shell 4, which are positioned in front of the external threads on the filter, so that water flow is prevented from flowing out of the pump shell 4 from the threaded connection, and when the sealing gasket 3 is installed, the sealing gasket 3 is firstly arranged at the front end of the sealing cover 1, then the sealing cover 1 with the sealing gasket 3 is integrally injection-molded with the inner bracket 2, and the sealing gasket 3 protrudes outwards and is in sealing contact with the inner peripheral surface of the pump shell 4.
Example III
On the basis of the second embodiment, the side wall of the foreign matter prevention structure 5 is provided with a plurality of grid holes 6, and the shape of the grid holes 6 is not limited. According to the difficulty of injection molding, a trapezoid square hole as shown in fig. 8 is the optimal choice. The foreign matter preventing structure 5 in the original design is a lateral closed structure, and water flow can only flow into the impeller through the inlet of the foreign matter preventing structure 5, so that the flow is greatly reduced. As can be seen from the flow rate calculation formula q=sv (S is the area, v is the water flow rate), when the water flow rate is the same, the cross-sectional area needs to be increased in order to increase the flow rate. Therefore, in this embodiment, the original lateral sealing structure is designed into a grid shape, and the sum of the inlet area of the foreign matter prevention structure 5 and the area of the grid holes 6 is larger than the inlet area of the single foreign matter prevention structure 5 in the original design, so that the flow rate is also greatly improved compared with the original design. The area range of the single grid hole 6 is set to be 50mm 2 ～70mm 2 In this range, not only can the entry of large foreign matters such as coins and paperclips be preventedAnd soft foreign matters such as hair, knitting wool and the like can be conveniently and rapidly discharged, and blockage is prevented. Meanwhile, the flow can meet the requirement, and the too large influence caused by too small grid holes 6 can be avoided.
After the filter is in threaded fit with the pump shell 4, the foreign matter preventing structure 5 on the pump shell 4 is positioned in the foreign matter scraping structure 7 on the inner support 2, and the filter and the foreign matter scraping structure are in clearance fit, so that interference between the pump shell 4 and the inner support 2 cannot occur when the sealing cover 1 is unscrewed, and meanwhile soft foreign matters in the pump shell 4 can be brought out by the inner support 2 when the sealing cover is unscrewed.
Example IV
A drain pump comprising the above-described pump housing assembly. Can be used for drainage systems of household appliances such as washing machines, dish washers and the like.
In the description of the present utility model, it should be understood that the terms "center", "front", "rear", "inner", "outer", "axial", and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (12)
1. A filter comprising a cover (1) and an inner support (2), characterized in that: the novel water pump is characterized in that the sealing cover (1) and the inner support (2) are integrally injection molded, one end, close to the water flow output direction, of the inner support (2) in the axial direction is provided with one or more foreign matter scraping structures (7), the sealing cover (1) is located at the other end, in the axial direction, of the inner support (2), of the sealing cover, the foreign matter scraping structures (7) extend towards the central axis direction of the inner support (2), and a space for containing the foreign matter preventing structures (5) in the water pump shell assembly is reserved in the center of the inner support (2).
2. A filter as claimed in claim 1, wherein: the foreign matter scraping structure (7) is provided with one or more matching surfaces (8) which are axially distributed, and the matching surfaces (8) face to the central shaft of the inner bracket (2) and are in clearance fit with the outer peripheral surface of the foreign matter preventing structure (5).
3. A filter as claimed in claim 2, wherein: the foreign matter scraping structure (7) comprises a radial rod (701) and an inclined rod (702) which are connected with each other, the radial rod (701) extends along the radial direction of the inner support (2) and is connected with the inner peripheral wall of the inner support (2), the inclined rod (702) is connected with the end face of the inner support (2), and the matching surface (8) is positioned on the radial inner end face of the radial rod (701).
4. A filter according to claim 3, wherein: and a reinforcing rib (703) is connected between the radial rod (701) and the inclined rod (702).
5. A filter according to claim 3, wherein: one side of the inclined rod (702) facing the central shaft of the inner bracket (2) is provided with one or more convex blocks (704), and the convex blocks (704) are in clearance fit with the outer peripheral surface of the foreign matter prevention structure (5).
6. A water pump housing assembly, characterized by: the filter comprises a pump shell (4) and the filter as claimed in any one of claims 1 to 5, wherein the pump shell (4) comprises a rear pump body (401) and a front pump body (402) which are mutually communicated, a water inlet (403) is formed in the rear pump body (401), a water outlet (404) is formed in the front pump body (402), and the filter is positioned in the rear pump body (401) and is in threaded connection with the rear pump body (401);
one end of the rear pump body (401) facing the front pump body (402) is provided with a foreign matter preventing structure (5) protruding towards the filter direction and penetrating axially, and the foreign matter preventing structure (5) is positioned on the inner side of the foreign matter scraping structure (7).
7. The water pump housing assembly of claim 6, wherein: the foreign matter preventing structure (5) is a truncated cone-shaped structure with the outer diameter gradually reduced from one end close to the front pump body (402) to one end far away from the front pump body (402).
8. The water pump housing assembly of claim 7, wherein: the side wall of the foreign matter prevention structure (5) is provided with a plurality of grid holes (6).
9. The water pump housing assembly of claim 8, wherein: the cross-sectional area of each of the mesh holes (6) is 50mm 2 ～70mm 2 。
10. The water pump housing assembly of claim 7, wherein: the size of the inlet inner diameter B of the foreign matter prevention structure (5) is 8 mm-12 mm.
11. The water pump housing assembly of claim 7, wherein: the outer peripheral surface of the sealing cover (1) is provided with external threads matched with the rear pump body (401).
12. A drain pump, characterized by: a water pump housing assembly comprising any one of claims 6-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320619246.1U CN219299643U (en) | 2023-03-27 | 2023-03-27 | Filter, water pump shell assembly and drainage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320619246.1U CN219299643U (en) | 2023-03-27 | 2023-03-27 | Filter, water pump shell assembly and drainage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219299643U true CN219299643U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320619246.1U Active CN219299643U (en) | 2023-03-27 | 2023-03-27 | Filter, water pump shell assembly and drainage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219299643U (en) |
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2023
- 2023-03-27 CN CN202320619246.1U patent/CN219299643U/en active Active
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