CN220687696U - Detachable miniature drainage pump - Google Patents

Abstract

The utility model discloses a detachable miniature drainage pump, which comprises: the two ends of the pump body are respectively provided with a filter frame installation cavity and a motor installation cavity which are communicated, and the side surface of the pump body is provided with a water inlet and a water outlet; the filter frame is arranged in the filter frame mounting cavity, a filter cavity is formed between the filter frame and the pump body, and a filter hole is formed in the filter frame; a fixed groove is formed in one end, far away from the motor mounting cavity, of the filter frame, and a limiting strip which is arranged in a protruding mode is arranged on the side wall of the fixed groove; the screw plug is provided with an arc-shaped buckle at one end, the arc-shaped buckle is inserted into the fixed groove and is clamped with the limit strip, and the arc-shaped buckle is rotatably arranged in the fixed groove; the screw plug is matched with the internal thread on the filter mounting port through the external thread on the side surface of the screw plug and is arranged in the filter mounting port; and the motor impeller assembly is arranged on the motor installation cavity. According to the utility model, the pump plug is arranged in a split manner with the filter frame, and is rotatably connected with the filter frame through the buckle, so that the influence of the installation of the filter frame on the tightness of the sealing ring is effectively avoided.

Description

Detachable miniature drainage pump

Technical Field

The utility model relates to the technical field of washing equipment, in particular to a detachable miniature drainage pump.

Background

At present, along with the improvement of living standard, people begin to shuffle worn clothes, cross infection is unsanitary, baby clothes are frequently cleaned, the amount is small, and the problems of water and electricity consumption and the like have higher requirements.

With the development of intelligent household appliances, a small-sized washing machine is also urgently needed in the aspect of clothes cleaning, and the most critical parts of the small-sized washing machine are how to discharge impurities such as sewage, cotton wool, hair and the like; at present, small-sized drainage pumps in the market can only discharge small impurities such as cotton wool, hair and the like from a drainage pipe together through sewage, and can not discharge and take out larger mixtures, so that blockage is easily caused.

Therefore, the chinese patent No. 207031824U provides a drain pump and a full-automatic washing machine using the same, wherein the drain pump includes a detachable filter disposed on the drain pump, a filter cavity is formed between the filter and a water inlet of the drain pump, the filter has a filtering function, and can filter foreign matters in water, reduce abnormal noise generated by high-speed friction of the foreign matters, reduce failure rate of an impeller of the drain pump, and improve service life of the drain pump; the position of the filter mounting opening of the filter is lower than the water inlet of the drainage pump, and the position of the filter mounting opening of the filter is lower than the water level of the water cavity of the drainage pump, so that the filter is detached, water in the whole machine can be emptied, and the phenomenon of peculiar smell caused by water storage deterioration is avoided.

However, in the above technical solution, the drain pump has the following drawbacks:

the filter frame is connected with the pump body through threads on the filter frame, a groove for installing the sealing ring is formed in the filter frame, the sealing ring is installed on the filter frame when the filter frame is installed with the pump body, the inner threads and the inner wall of the pump body can block or abrade the sealing ring when the filter frame rotates and is installed through the matching of the inner threads and the outer threads, the sealing ring can not be installed in place possibly, and the sealing performance of a filter cavity is affected;

in view of this, there is an urgent need to improve the structure of the drainage pump in the prior art, so as to improve the tightness of the filter cavity and the filtering effect of the filter cavity.

Disclosure of Invention

The utility model aims to solve the technical problems of poor sealing performance and poor filtering effect of a filtering cavity of the conventional drainage pump.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a removable mini-drain pump, comprising:

the pump body, both ends of its inner chamber are equipped with the filtration frame installation cavity and motor installation cavity that communicate respectively, there are water inlets and water outlets that communicate with said filtration frame installation cavity and said motor installation cavity respectively on the side of the said pump body;

the filter frame is arranged in the filter frame mounting cavity, a filter cavity is formed by the side face of the filter frame and the side face of the filter frame mounting cavity, and a filter hole is formed in the filter frame and used for communicating the filter cavity with the motor mounting cavity; a fixed groove is formed in one end, far away from the motor mounting cavity, of the filter frame, and a limiting strip which is arranged in a protruding mode is arranged on the side wall of the fixed groove;

the inner end of the screw plug is provided with arc buckles which are arranged at intervals along the circumferential direction of the screw plug, the screw plug is in threaded connection with the outer end of the filter frame mounting cavity, the arc buckles are inserted into the fixing groove and are clamped with the limit strips, and the arc buckles are rotatably arranged in the fixing groove;

and the motor impeller assembly is arranged on the motor installation cavity.

In the above technical solution, preferably, the filter frame includes:

the filter support part is in a horn mouth shape, a plurality of filter holes which are axially arranged are formed in the circumferential surface and are used for connecting the filter frame installation cavity and the motor installation cavity, and a filter ring sleeve which is arranged in a protruding mode is arranged at the tail of the filter support part;

the screw plug supporting part is arranged opposite to the filtering supporting part, a filtering column is arranged on the end face of the screw plug supporting part facing to the filtering supporting part, the outer end of the filtering column is inserted into an inner hole of the filtering ring sleeve, and a gap is reserved between the outer end of the filtering column and the filtering ring sleeve to form a flow passage; the fixing groove is arranged on the end face of the screw plug supporting part, which is far away from the filtering column;

and the two ends of the support column are respectively connected with the outer edges of the filtering support part and the screw plug support part.

In the above technical solution, preferably, a protruding limit protrusion is provided on an outer side surface of the support column; the inner side surface of the filter frame installation cavity is provided with a rotation stopping groove, and the limiting convex part is arranged in the rotation stopping groove.

In the above technical scheme, preferably, the screw plug supporting portion is provided with an annular flange, the filter frame installation cavity is provided with a sealing boss, the annular flange abuts against the sealing boss, and a filter frame sealing ring is arranged between the annular flange and the sealing boss.

In the above technical solution, preferably, the filter frame sealing ring is provided with a sealing convex ring, and the sealing convex ring abuts against the annular flange.

In the above technical solution, preferably, the filtering column is in a cross column shape, and the diameter of the circumcircle of the outer end is smaller than the root.

In the above technical scheme, preferably, a handle groove is formed in an end face, far away from the filter frame, of the screw plug, a handle is arranged in the handle groove, and an anti-slip wavy surface is arranged on a side face of the handle.

In the above technical solution, preferably, a partition board for separating the filter frame installation cavity from the motor installation cavity is provided in the pump body; the baffle is provided with a communication hole for communicating the filter frame installation cavity and the motor installation cavity.

In the above technical solution, preferably, a motor mounting opening is provided on a side of the motor mounting cavity away from the partition board; the motor impeller subassembly passes through the motor mounting port sets up on the motor installation cavity, the motor impeller subassembly includes:

the motor cavity shell is arranged on the motor mounting port and is detachably connected with the pump body; a motor rotor cavity is formed at one end of the motor cavity shell;

the impeller mounting plate is arranged on the motor cavity shell and is in sealing connection with the pump body to form a sealed drainage cavity;

the impeller is arranged in the drainage cavity;

the motor rotor is arranged in the motor rotor cavity and is connected with the impeller through a motor shaft;

the stator iron core is arranged around the motor rotor cavity, and the stator iron core generates electromagnetic force through the stator coil to drive the motor rotor to rotate.

In the above technical solution, preferably, an impeller mounting step is provided in the motor mounting port;

the motor cavity shell is provided with a supporting plate, the end face, close to the motor installation cavity, of the supporting plate is provided with a supporting ring, and the inner side surface of the supporting ring is provided with a limiting ring groove arranged along the circumferential direction of the supporting ring;

the end face, close to the motor cavity shell, of the impeller mounting plate is provided with a first limiting ring and a second limiting ring which are concentrically arranged, the outer diameter of the first limiting ring is matched with the inner diameter of the supporting ring, and the first limiting ring is provided with a limiting convex ring matched with the limiting ring groove; the impeller mounting plate is arranged on the supporting plate, the impeller mounting plate is propped against the impeller mounting step, and the second limiting ring and the outer side surface of the supporting ring are oppositely arranged to form a motor sealing ring groove;

and a motor sealing ring is arranged in the motor sealing ring groove.

Compared with the prior art, the detachable miniature drainage pump provided by the utility model has the advantages that the filter frame is arranged in the filter frame installation cavity, the filter installation opening on the filter frame installation cavity is plugged through the screw plug, the screw plug is rotationally connected with the filter frame through the buckle, and the interference of threads on the filter installation opening on the seal ring when the filter frame is installed with the pump body is effectively avoided, so that the seal ring is displaced, and the tightness of the filter cavity is further influenced.

Drawings

FIG. 1 is a perspective view of a removable mini-drain pump of the present utility model;

FIG. 2 is a schematic diagram showing the detachable micro drain pump according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a removable micro drain pump according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a pump body according to the present utility model;

FIG. 5 is a schematic view of a filter frame according to the present utility model;

FIG. 6 is a schematic view of the structure of a screw plug according to the present utility model;

FIG. 7 is a schematic view of a motor impeller assembly according to the present utility model;

FIG. 8 is a schematic view of the motor cavity housing of the present utility model;

fig. 9 is a schematic view of the structure of the impeller mounting plate according to the present utility model.

The correspondence between the names and the reference numerals of the respective components in fig. 1 to 9 is as follows:

pump body 1, filter frame 2, screw plug 3, motor impeller component 4,

a filter frame installation cavity 11, a motor installation cavity 12, a baffle 13, a water inlet 14, a water outlet 15,

the filter mounting opening 111, the rotation stopping groove 112, the sealing boss 113,

a motor mounting port 121, an impeller mounting step 122,

the communication hole 131 is provided with a plurality of communication holes,

the filter support 21, the screw plug support 22, the support post 23, the filter collar 24, the filter hole 25, the filter post 26, the fixing groove 27, the annular flange 28, the filter frame seal 29,

the limit projection 231 is provided with a recess,

the spacing pieces 271 are provided with a plurality of spaced apart slots,

the sealing collar 291 is provided with a sealing collar,

arc-shaped buckles 31, handle grooves 32, handles 33, anti-skid wavy surfaces 34,

a motor cavity housing 41, an impeller mounting plate 42, an impeller 43, a motor rotor 44, a stator core 45, a stator coil 46, a motor seal ring 47,

the rotor chamber 411, the support plate 412, the support ring 413, the limit ring groove 414,

the first limiting ring 421, the second limiting ring 422 and the limiting convex ring 423.

Detailed Description

The utility model provides a detachable miniature drainage pump, wherein a pump plug and a filter frame are arranged in a split mode, and the pump plug is rotatably connected with the filter frame through a buckle, so that the influence of the installation of the filter frame on the tightness of a sealing ring is effectively avoided. The utility model is described in detail below with reference to the drawings and the detailed description.

As shown in fig. 1 to 9, the detachable micro drain pump provided by the utility model comprises a pump body 1, a filter frame 2, a screw plug 3 and a motor impeller assembly 4.

The inner chamber both ends of the pump body 1 are equipped with filtration frame installation cavity 11 and motor installation cavity 12 respectively, and filtration frame installation cavity 11 and motor installation cavity 12 separate through baffle 13, are equipped with the intercommunicating pore 131 that is used for the intercommunication filtration frame installation cavity 11 and motor installation cavity 12 on the baffle 13. The side of the pump body 1 is provided with a water inlet 14 and a water outlet 15, and the water inlet 14 and the water outlet 15 are respectively communicated with the filter frame installation cavity 11 and the motor installation cavity 12.

The outer end of the filter frame installation cavity 11 is open and provided with a filter installation opening 111. A rotation stopping groove 112 is arranged on the inner side surface of the filter frame installation cavity 11. The outer end of the motor installation cavity 12 is open, and is provided with a motor installation opening 121.

The filter frame 2 is arranged in the filter frame installation cavity 11 through the filter installation opening 111, and the side surface of the filter frame 2 and the side surface of the filter frame installation cavity 11 form a filter cavity.

The filter holder 2 includes a filter support portion 21 and a plug support portion 22 which are disposed opposite to each other, and outer edge portions of the two are connected by a plurality of support columns 23. The filter support part 21 is horn mouth-shaped, and a plurality of filter holes 25 which are axially arranged are arranged on the circumference surface and are used for communicating the filter cavity and the motor installation cavity 12. The tail part of the filter support part 21 is provided with a filter ring sleeve 24 which is arranged in a protruding way.

The end face of the screw plug supporting part 22 facing the filtering supporting part 21 is provided with a filtering column 26, the filtering column 26 is in a cross column shape, and the diameter of a circumcircle of the outer end part is smaller than that of the root part. The outer end of the filter column 26 is inserted into the inner hole of the filter collar 24, and a gap is left between the filter collar 24 and the outer end of the filter column to form a flow passage. The end surface of the plug support 22 facing away from the filter support 21 is provided with a fixing groove 27. The side wall of the fixed groove 27 is provided with a limit bar 271 which is arranged in a protruding way.

The outer side surface of the support column 23 is provided with a limit convex part 231 which is arranged in a protruding way. The filter frame 2 is mounted in the filter frame mounting chamber 11, and the limit projection 231 is disposed in the rotation-stopping groove 112.

The screw plug supporting part 22 is provided with an annular flange 28, the filter frame installation cavity 11 is internally provided with a sealing boss 113, the annular flange 28 is abutted against the sealing boss 113, and a filter frame sealing ring 29 is arranged between the annular flange 28 and the sealing boss 113. The filter frame sealing ring 29 is provided with a sealing convex ring 291, and the sealing convex ring 291 abuts against the annular flange 28 for improving the sealing effect of the filter frame sealing ring 29.

The inner of plug screw 3 is equipped with the arc buckle 31 that sets up along the circumference of plug screw 3, and two arc buckles 31 relative interval set up, and arc buckle 31 inserts and sets up in fixed slot 27, with limit 271 block, makes arc buckle 31 rotate and sets up in fixed slot 27. The side of the screw plug 3 is provided with external threads, the filter mounting port 111 is provided with internal threads, and the screw plug 3 is matched with the internal threads through the external threads and is arranged in the filter mounting port 111. The end face of the screw plug 3 is provided with a handle groove 32, and the handle groove 32 is arranged on the end face of the screw plug 3 far away from the filter frame 2. A handle 33 is arranged in the handle groove 32, and an anti-slip wavy surface 34 is arranged on the side surface of the handle 33.

The motor impeller assembly 4 is mounted on the motor mounting cavity 12, the motor impeller assembly 4 is disposed on the motor mounting cavity 12 through a motor mounting port 121, and the motor impeller assembly 4 includes a motor cavity housing 41, an impeller mounting plate 42, an impeller 43, a motor rotor 44, a stator core 45, and a stator coil 46.

The motor cavity housing 41 is fixedly arranged on the motor mounting opening 121, and the motor cavity housing 41 is detachably connected with the pump body 1. One end of the motor cavity housing 41 is provided with a motor rotor cavity 411.

The impeller mounting plate 42 is arranged on the motor cavity shell 41 and is in sealing connection with the pump body 1 to enclose a sealed drainage cavity. The impeller 43 is disposed in the drainage chamber.

The motor rotor 44 is disposed within the motor rotor cavity 411, with the overhanging end of the motor rotor 44 being connected to the impeller 43. The stator core 45 is disposed around the motor rotor cavity 411, and the stator coil 46 has two connection terminals for connecting a power source to generate magnetic field force through the stator coil 46 to the stator core 45, driving the motor rotor 44 in the motor rotor cavity 411 to rotate.

An impeller mounting step 122 is provided in the motor mounting port 121. The motor cavity shell 41 is provided with a supporting plate 412, the end face of the supporting plate 412, which is close to the motor installation cavity 12, is provided with a supporting ring 413, and the inner side surface of the supporting ring 413 is provided with a limiting ring groove 414 which is arranged along the circumferential direction of the supporting ring.

The end face, close to the motor cavity shell 41, of the impeller mounting plate 42 is provided with a first limiting ring 421 and a second limiting ring 422 which are concentrically arranged, the outer diameter of the first limiting ring 421 is matched with the inner diameter of the supporting ring 413, and the first limiting ring 421 is provided with a limiting convex ring 423 matched with the limiting ring groove 414. The impeller mounting plate 42 is mounted on the support plate 412, the impeller mounting plate 42 is abutted against the impeller mounting step 122, the second limiting ring 422 and the outer side face of the support ring 413 are oppositely arranged to form a motor sealing ring groove, a motor sealing ring 47 is arranged in the motor sealing ring groove, and the motor sealing ring 47 is used for improving the tightness of the drainage cavity.

The working process of the utility model is as follows:

the stator coil 46 is electrified, the stator iron core 45 generates electromagnetic force, the motor rotor 44 is driven to rotate, the impeller 43 is driven to rotate, negative pressure is formed in the drainage cavity, sewage enters the filter cavity through the water inlet 14, flows to the drainage cavity under the action of the negative pressure, and is discharged from the drainage outlet 15. As the sewage flows through the filter chamber, the filter column 26 and the filter support 21 retain impurities such as hair and debris in the sewage, leaving them in the filter chamber.

After the water draining is completed, the user can rotate the handle 33 on the screw plug 3 to unlock the external thread on the screw plug 3 and the internal thread in the filter mounting opening 111, and the filter frame 2 and the screw plug 3 are matched through the arc buckle 31 and the limiting strip 271, so that the screw plug 3 is rotationally connected with the filter frame 2, and the screw plug 3 can rotate relative to the filter frame 2. The screw plug 3 is pulled outwards to drive the filter frame 2 to be taken out from the filter frame installation cavity 11, impurities on the filter frame 2 can be cleaned, and the filter frame 2 is reinstalled in the filter frame installation cavity 11 after the cleaning is finished, so that the filtering is continued.

Compared with the prior art, the detachable miniature drainage pump provided by the utility model has the following advantages:

firstly, the filter frame and the screw plug adopt a split structure, the filter frame is rotationally connected with the screw plug through a buckle, the filter frame and the screw plug are convenient to assemble and disassemble, and a filter sealing ring on the filter frame cannot be displaced due to the installation of the filter frame, so that the tightness of the miniature drainage pump is improved;

secondly, a limiting convex part is arranged on the filter frame, and a rotation stopping groove is arranged in the filter frame mounting cavity, so that the filter frame is effectively prevented from rotating due to the impact of water flow, and the filtering effect is effectively prevented from being influenced;

third, set up the sealed boss in the installation cavity of the filter frame, set up the seal ring between sealed boss and the filter frame, and set up the sealed bulge loop on the seal ring of the filter, further improved the leak tightness of the installation cavity of the filter frame;

fourth, motor rotor and stator coil separately set up, and motor rotor sets up in the motor cavity casing, has strengthened motor rotor's protection to impeller simple to operate.

The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can learn the structural changes made under the teaching of the present utility model can fall within the scope of the present utility model if the present utility model has the same or similar technical solutions.

Claims (10)

1. A removable mini-drain pump, comprising:

the pump body, both ends of its inner chamber are equipped with the filtration frame installation cavity and motor installation cavity that communicate respectively, there are water inlets and water outlets that communicate with said filtration frame installation cavity and said motor installation cavity respectively on the side of the said pump body;

the filter frame is arranged in the filter frame mounting cavity, a filter cavity is formed by the side face of the filter frame and the side face of the filter frame mounting cavity, and a filter hole is formed in the filter frame and used for communicating the filter cavity with the motor mounting cavity; a fixed groove is formed in one end, far away from the motor mounting cavity, of the filter frame, and a limiting strip which is arranged in a protruding mode is arranged on the side wall of the fixed groove;

the inner end of the screw plug is provided with arc buckles which are arranged at intervals along the circumferential direction of the screw plug, the screw plug is in threaded connection with the outer end of the filter frame mounting cavity, the arc buckles are inserted into the fixing groove and are clamped with the limit strips, and the arc buckles are rotatably arranged in the fixing groove;

and the motor impeller assembly is arranged on the motor installation cavity.

2. The removable mini-drain pump of claim 1, wherein the filter holder comprises:

the filter support part is in a horn mouth shape, a plurality of filter holes which are axially arranged are formed in the circumferential surface and are used for connecting the filter frame installation cavity and the motor installation cavity, and a filter ring sleeve which is arranged in a protruding mode is arranged at the tail of the filter support part;

the screw plug supporting part is arranged opposite to the filtering supporting part, a filtering column is arranged on the end face of the screw plug supporting part facing to the filtering supporting part, the outer end of the filtering column is inserted into an inner hole of the filtering ring sleeve, and a gap is reserved between the outer end of the filtering column and the filtering ring sleeve to form a flow passage; the fixing groove is arranged on the end face of the screw plug supporting part, which is far away from the filtering column;

and the two ends of the support column are respectively connected with the outer edges of the filtering support part and the screw plug support part.

3. The detachable miniature drainage pump of claim 2, wherein the outer side surface of the support column is provided with a limit protrusion arranged in a protruding manner;

the inner side surface of the filter frame installation cavity is provided with a rotation stopping groove, and the limiting convex part is arranged in the rotation stopping groove.

4. The detachable miniature drain pump according to claim 2, wherein the screw plug support portion is provided with an annular flange, the filter frame installation cavity is provided with a sealing boss, the annular flange abuts against the sealing boss, and a filter frame sealing ring is arranged between the annular flange and the sealing boss.

5. The removable mini-drain pump of claim 4, wherein the filter frame seal ring is provided with a sealing collar that abuts the annular flange.

6. The removable mini-drain pump of claim 4, wherein the filter column is cross-cylindrical and the outer end has a smaller diameter than the root.

7. The detachable miniature drain pump according to claim 1, wherein a handle groove is provided on an end surface of the screw plug away from the filter frame, a handle is provided in the handle groove, and an anti-slip wavy surface is provided on a side surface of the handle.

8. The removable mini-drain pump of claim 1, wherein a baffle is disposed within the pump body for separating the filter frame mounting cavity from the motor mounting cavity; the baffle is provided with a communication hole for communicating the filter frame installation cavity and the motor installation cavity.

9. The detachable micro drain pump according to claim 8, wherein a motor mounting port is provided at a side of the motor mounting chamber away from the partition plate; the motor impeller subassembly passes through the motor mounting port sets up on the motor installation cavity, the motor impeller subassembly includes:

the motor cavity shell is arranged on the motor mounting port and is detachably connected with the pump body; a motor rotor cavity is formed at one end of the motor cavity shell;

the impeller mounting plate is arranged on the motor cavity shell and is in sealing connection with the pump body to form a sealed drainage cavity;

the impeller is arranged in the drainage cavity;

the motor rotor is arranged in the motor rotor cavity and is connected with the impeller;

the stator iron core is arranged around the motor rotor cavity, and the stator iron core generates electromagnetic force through the stator coil to drive the motor rotor to rotate.

10. The detachable mini drain pump according to claim 9, wherein an impeller mounting step is provided in the motor mounting port;

the motor cavity shell is provided with a supporting plate, the end face, close to the motor installation cavity, of the supporting plate is provided with a supporting ring, and the inner side surface of the supporting ring is provided with a limiting ring groove arranged along the circumferential direction of the supporting ring;

the end face, close to the motor cavity shell, of the impeller mounting plate is provided with a first limiting ring and a second limiting ring which are concentrically arranged, the outer diameter of the first limiting ring is matched with the inner diameter of the supporting ring, and the first limiting ring is provided with a limiting convex ring matched with the limiting ring groove; the impeller mounting plate is arranged on the supporting plate, the impeller mounting plate is propped against the impeller mounting step, and the second limiting ring and the outer side surface of the supporting ring are oppositely arranged to form a motor sealing ring groove;

and a motor sealing ring is arranged in the motor sealing ring groove.