CN113513484A

CN113513484A - Liquid pump and closestool

Info

Publication number: CN113513484A
Application number: CN202110873682.7A
Authority: CN
Inventors: 李文明; 杨剑峰
Original assignee: Shenzhen Hengzhiyun Technology Co Ltd
Current assignee: Shenzhen Hengzhiyun Technology Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-10-19

Abstract

The invention relates to a liquid pump and a closestool, wherein the liquid pump comprises: a pump housing having a liquid storage space capable of storing liquid; the flow guide piece is at least partially accommodated in the liquid storage space; the flow guide piece is provided with a liquid inlet, a liquid guide cavity and a liquid outlet which are sequentially communicated; the impeller is accommodated in the liquid guide cavity; the driving assembly comprises a coil positioned outside the pump shell and a magnet positioned in the liquid storage space, and the magnet and the coil are correspondingly arranged and connected with the impeller; the magnetic force generated when the coil is electrified makes the magnet rotate, and the magnet drives the impeller to synchronously rotate so as to draw out the liquid in the liquid storage space through the liquid inlet, the liquid guide cavity and the liquid outlet in sequence. The drive assembly of the liquid pump is characterized in that the coil is arranged outside the pump shell, the magnet is arranged in the liquid storage space and connected with the impeller, a channel for the drive assembly to penetrate through is not required to be formed in the pump shell, liquid leakage in the liquid storage space is effectively prevented, and the quality of the closestool is effectively guaranteed.

Description

Liquid pump and closestool

Technical Field

The invention relates to the technical field of sanitary ware, in particular to a liquid pump and a closestool.

Background

With the continuous improvement of living standard of people, functional toilet bowls in various forms, commonly called as toilets, appear. As the requirement on the closestool is higher and higher, the high-end closestool is provided with an automatic flushing function and a high-pressure liquid pump, so as to meet the requirements of consumers on different flushing effects.

Traditional drawing liquid pump need set up the passageway that supplies the driver to wear to establish on the bottom of water tank, uses for a long time, and when fatigue damage appears in the part that seals up to passageway department, can lead to the water in the water tank to leak outside the water tank from the passageway, other parts of damage driver and closestool easily are difficult to guarantee the quality of closestool, seriously influence user's use and experience the sense.

Disclosure of Invention

In view of the above, it is desirable to provide a liquid pump and a toilet bowl.

An infusion pump comprising:

a pump housing having a liquid storage space capable of storing liquid;

the flow guide piece is at least partially accommodated in the liquid storage space; the flow guide piece is provided with a liquid inlet, a liquid guide cavity and a liquid outlet which are sequentially communicated;

the impeller is accommodated in the liquid guide cavity;

the driving assembly comprises a coil positioned outside the pump shell and a magnet positioned in the liquid storage space, and the magnet and the coil are correspondingly arranged and connected with the impeller; the magnetic force generated when the coil is electrified enables the magnet to rotate, and the magnet drives the impeller to synchronously rotate so as to draw the liquid in the liquid storage space out through the liquid inlet, the liquid guide cavity and the liquid outlet in sequence.

According to the driving assembly of the liquid pump, the coil is arranged outside the pump shell, the magnet is arranged in the liquid storage space and connected with the impeller, then the magnet is rotated through magnetic force generated when the coil is electrified, the impeller is driven to rotate synchronously when the magnet rotates, non-contact power transmission is realized, a channel for the driving assembly to penetrate through is not required to be arranged on the pump shell, liquid leakage in the liquid storage space is effectively prevented, the quality of a closestool is effectively ensured, and the use experience of a user is effectively improved; and through locating the coil outside the pump case, make the liquid separation in coil and the stock solution space, effectively prevent that coil and the liquid contact in the stock solution space from taking place electric shock accident and damage coil.

In one embodiment, the magnet is an annular body, and the magnet is arranged around the coil.

In one embodiment, the pump casing is provided with a mounting part, the mounting part protrudes into the liquid storage space on the inner side of the pump casing, the mounting part is recessed towards one side of the liquid storage space on the outer side of the pump casing to form a containing groove, the coil is contained in the containing groove, and the magnet is movably sleeved on the mounting part.

In one embodiment, the pump further comprises a fixing piece mounted on the pump shell, the fixing piece is located outside the pump shell and blocks the accommodating groove, and the coil is mounted on the fixing piece.

In one embodiment, the fixing member includes a base plate, a plug block disposed on the base plate, and a convex pillar disposed on the plug block, the base plate is attached to the pump housing, the plug block is inserted into the receiving groove, the convex pillar is located in the receiving groove, and the coil is wound on the convex pillar.

In one embodiment, the drive assembly includes a retaining sleeve coupled to the impeller, and the magnet is received within the retaining sleeve.

In one embodiment, the flow guiding member is a cylindrical structure, the liquid inlet and the liquid outlet are respectively located at two opposite ends of the flow guiding member, the impeller includes a rotating shaft and blades arranged on the rotating shaft, one end of the rotating shaft extends from the liquid inlet to the outside of the flow guiding member, and the fixing sleeve is connected with one end of the rotating shaft extending to the outside of the flow guiding member.

In one embodiment, the flow guide piece is of a volute structure, the liquid inlet is arranged along the axial direction of the impeller and corresponds to the impeller, and the liquid outlet is arranged along the radial direction of the impeller and corresponds to the impeller; the impeller include the rim plate, with rim ring that the coaxial interval of rim plate set up and connect in the rim plate with flabellum between the rim ring, fixed cover is located the rim plate orientation one side of rim ring, the installation department passes in proper order the water conservancy diversion spare reaches the rim plate extends to in the fixed cover.

In one embodiment, the bottom of the flow guide part is attached to the inner wall of the liquid storage space, and the liquid inlet is positioned at the top of the flow guide part

A closestool comprises the liquid pump.

Drawings

FIG. 1 is an axial cross-sectional view of a first embodiment of an infusion pump in accordance with the present invention;

FIG. 2 is an enlarged view of the infusion pump of FIG. 1 at A;

FIG. 3 is an axial cross-sectional view of a second embodiment of the present invention of a fluid pump;

FIG. 4 is a radial cross-sectional view of a flow-directing member and impeller of the fluid pump of FIG. 3;

fig. 5 is an enlarged view of the drawing pump shown in fig. 3 at B.

The meaning of the reference symbols in the drawings is:

the device comprises a pump shell 10, a liquid storage space 11, a mounting part 12, an accommodating groove 13, a flow guide part 20, a liquid inlet 21, a liquid guide cavity 22, a liquid outlet 23, an impeller 30, a rotating shaft 31, a fan blade 32, a driving assembly 40, a coil 41, a magnet 42, a fixing part 43, a base plate 430, a plug 431, a convex column 432 and a fixing sleeve 44;

the pump casing 10a, the liquid storage space 11a, the mounting portion 12a, the through opening 14a, the sealing ring 15a, the flow guide 20a, the liquid inlet 21a, the liquid guide cavity 22a, the accommodating space 220a, the flow channel 221a, the large end 222a, the small end 223a, the liquid outlet 23a, the impeller 30a, the wheel disc 31a, the wheel ring 32a, the fan blade 33a, the mounting opening 34a, the driving assembly 40a, the coil 41a, the magnet 42a, the fixing member 43a and the fixing sleeve 44 a.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "from" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "slave" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or in indirect contact via intermediate media. Also, a first feature "on," "above," and "above" a feature may be directly or obliquely above the feature, or simply mean that the first feature is at a higher level than the feature. A first feature being "under," "below," and "beneath" a feature may be that the first feature is directly under or obliquely below the feature, or simply means that the first feature is at a lesser elevation than the feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and fig. 2, a liquid pump according to a first embodiment of the invention is applied to a sanitary device, in the embodiment, the sanitary device is a toilet, and it can be understood that in other embodiments, the sanitary device may also be other devices that need to be washed, such as a washbasin, a bathtub, and the like.

Referring to fig. 1, the liquid pump includes a pump casing 10, a guide 20, an impeller 30 and a driving assembly 40. The pump housing 10 has a reservoir space 11 in which fluid can be stored, the fluid stored in the reservoir space 11 being used to flush the toilet, in this embodiment the fluid stored in the reservoir space 11 is water. At least part of the flow guide 20 is accommodated in the liquid storage space 11. The flow guide member 20 is provided with a liquid inlet 21, a liquid guide cavity 22 and a liquid outlet 23 which are sequentially communicated, and the liquid inlet 21 is located on the part of the flow guide member 20 accommodated in the liquid storage space 11. The impeller 30 is housed within the drainage chamber 22. Referring to fig. 2, the driving assembly 40 includes a coil 41 located outside the pump housing 10 and a magnet 42 located in the liquid storage space 11, the magnet 42 is disposed corresponding to the coil 41 and connected to the impeller 30; the magnetic force generated when the coil 41 is energized makes the magnet 42 rotate, and the magnet 42 drives the impeller 30 to rotate synchronously, so as to draw the liquid in the liquid storage space 11 out through the liquid inlet 21, the liquid guiding cavity 22 and the liquid outlet 23 in sequence.

Referring to fig. 1 and 2 together, specifically, when the liquid level in the liquid storage space 11 reaches a first predetermined level, at least a portion of the flow guide 20 is immersed in the liquid storage space 11, the liquid in the liquid storage space 11 enters the liquid-guiding chamber 22 through the liquid inlet 21, and the impeller 30 is immersed in the liquid-guiding chamber 22. When liquid is pumped, the coil 41 is electrified, magnetic force is generated when the coil 41 is electrified, the magnetic force generated by the coil 41 penetrates through the pump shell 10 and acts on the magnet 42 to enable the magnet 42 to rotate, the impeller 30 is driven to rotate synchronously when the magnet 42 rotates, liquid in the liquid guide cavity 22 is driven to be discharged from the liquid discharge port 23, meanwhile, negative pressure is generated below the impeller 30, liquid in the liquid storage space 11 is continuously sucked into the liquid guide cavity 22 through the liquid inlet 21, and therefore the liquid in the liquid storage space 11 is continuously pumped away. When the liquid level in the liquid storage space 11 is lowered to the second preset liquid level, the second preset liquid level is lower than the first preset liquid level, the liquid in the liquid storage space 11 is not sucked into the liquid guide cavity 22 any more, the coil 41 is stopped to be electrified, the magnetic force disappears, the magnet 42 stops rotating, the impeller 30 also stops rotating, and the liquid drawing work is completed. It should be noted that the second predetermined liquid level is the height of the liquid inlet 21, and it can be understood that when the liquid level in the liquid storage space 11 is lowered to the position of the liquid inlet 21, the external air will enter the liquid guiding cavity 22 from the liquid inlet 21 to balance the negative pressure below the impeller 30, so that the liquid in the liquid storage space 11 can not be sucked into the liquid guiding cavity 22 any more.

The drive assembly 40 of above-mentioned drawing liquid pump is outside locating pump case 10 through locating coil 41, magnet 42 is located in stock solution space 11 and is connected impeller 30, then magnetic force through producing when circular telegram for coil 41 makes magnet 42 rotatory, it is rotatory to drive impeller 30 when magnet 42 is rotatory, realize non-contact's power transmission, need not to set up the passageway that supplies drive assembly 40 to wear to establish on pump case 10, the integrality of pump case 10 inner wall has been realized, effectively prevent the liquid leakage in the stock solution space 11, effectively guarantee the quality of closestool, thereby effectively improve user's use experience and feel. And the coil 41 is arranged outside the pump shell 10, so that the coil 41 is separated from the liquid in the liquid storage space 11, and the coil 41 is effectively prevented from being contacted with the liquid in the liquid storage space 11 to cause electric shock accidents and damage to the coil 41. Meanwhile, the magnetic force generated when the coil 41 is electrified directly acts on the magnet 42 to rotate the magnet 42, so that additional intermediate transmission parts are not needed, the structure is simple, and the cost is low. In addition, the pump case 10 itself has a liquid storage space 11 for storing liquid, so that an additional water tank is not required, and cost is effectively saved.

Referring to fig. 1, the fluid guiding member 20 is a cylindrical structure, the fluid inlet 21 and the fluid outlet 23 are respectively located at two opposite ends of the fluid guiding member 20, one end of the fluid guiding member 20 having the fluid inlet 21 is accommodated in the fluid storage space 11, and one end of the fluid guiding member 20 having the fluid outlet 23 is located outside the pump case 10. Specifically, in the present embodiment, the flow guide 20 is vertically disposed perpendicular to the pump housing 10, the lower end of the flow guide 20 is immersed in the liquid storage space 11, the upper end of the flow guide 20 extends out of the pump housing 10, the liquid inlet 21 is located at the lower end of the flow guide 20, and the liquid outlet 23 is located at the upper end of the flow guide 20. Further, the lower end of the guide 20 is spaced apart from the bottom of the pump case 10, i.e., the guide 20 is not in contact with the pump case 10, so that the guide 20 is separately connected to other components of the toilet bowl when assembled. Of course in other embodiments, the baffle 20 may be connected to the bottom of the pump housing 10 by a connecting post; alternatively, when the lower end of the baffle 20 is directly connected to the bottom of the pump housing 10 and the baffle 20 is directly connected to the bottom of the pump housing 10, the drain port 23 may be provided on the periphery of the baffle 20. By connecting the flow guide 20 to the pump housing 10, the liquid pump is formed as a single unit, so that when assembled to a toilet, only the pump housing 10 needs to be mounted to the toilet.

In this embodiment, the impeller 30 includes a rotating shaft 31 and a plurality of blades 32 disposed on the rotating shaft 31, one end of the rotating shaft 31 extends from the liquid inlet 21 to the outside of the fluid guiding member 20 and is connected to the magnet 42, the plurality of blades 32 are disposed in the fluid guiding cavity 22 and located between the liquid inlet 21 and the liquid outlet 23, the number of the blades 32 is plural, and the plurality of blades 32 are disposed at intervals along the circumferential direction of the rotating shaft 31. When the liquid is drawn, the liquid flows from the liquid inlet 21 to the fan blades 32 in the axial direction of the impeller 30, and then flows to the liquid outlet 23 in the axial direction of the impeller 30.

Referring to fig. 2, in the present embodiment, the magnet 42 is a ring-shaped body, two ends of the magnet 42 are open, and the magnet 42 is disposed around the coil 41. Further, the coil 41 is an exciting coil, the magnet 42 is a magnet, and the coil 41 and the magnet 42 are circular in cross section.

Specifically, the pump case 10 has a mounting portion 12, the mounting portion 12 protrudes into the liquid storage space 11 on the inner side of the pump case 10, and the mounting portion 12 is recessed toward the liquid storage space 11 side to form a receiving groove 13 on the outer side of the pump case 10. Further, the mounting portion 12 is cylindrical, i.e. the cross-section of the mounting portion 12 is circular, and the cross-section of the receiving groove 13 is also circular. In the present embodiment, the mounting portion 12 is integrally formed with the pump housing 10. Coil 41 holds in holding tank 13, carries on spacingly through holding tank 13 to coil 41, effectively guarantees the stability of coil 41 installation. The magnet 42 is movably sleeved on the mounting portion 12, so that the magnet 42 rotates around the mounting portion 12 under the magnetic force of the coil 41, the magnet 42 is effectively prevented from seriously deviating during rotation, the stability of the rotation of the magnet 42, namely the stability of the rotation of the impeller 30, is ensured, and the liquid in the liquid storage space 11 can be stably discharged from the liquid discharge port 23. Further, there is a gap between the magnet 42 and the mounting portion 12 to prevent the magnet 42 from generating friction with the mounting portion 12 during rotation to lose energy.

In some embodiments, the driving assembly 40 further comprises a fixing member 43 mounted on the bottom of the pump housing 10, the fixing member 43 being located outside the pump housing 10 and closing off the receiving groove 13, the coil 41 being mounted on said fixing member 43. Specifically, the fixing member 43 includes a base plate 430, a stopper 431 disposed on the base plate 430, and a boss 432 disposed on the stopper 431, and the base plate 430 is attached to the bottom outside the pump case 10. Further, the base plate 430 may be connected to the bottom of the pump casing 10, and the base plate 430 may be connected to the pump casing 10 in various ways, for example, the base plate 430 may be fastened or snapped or screwed to the pump casing 10 or may be integrally formed. In addition, when the base plate 430 and the pump housing 10 are made of metal, the base plate 430 and the pump housing 10 may be welded to each other. When the base plate 430 and the pump housing 10 are made of plastic material, the base plate 430 and the pump housing 10 may be welded to each other. The plug 431 is inserted into the receiving groove 13, and the plug 431 is fitted into the receiving groove 13, specifically, the plug 431 is interference-fitted with the receiving groove 13, so that the plug 431 can be tightly inserted into the receiving groove 13. The convex column 432 is located in the accommodating groove 13, and the coil 41 is uniformly wound on the convex column 432 along the axial direction of the convex column 432.

In some embodiments, the drive assembly 40 further includes a hub 44, the two ends of the hub 44 being connected to the magnet 42 and the impeller 30, respectively. Specifically, one end of the fixing sleeve 44 is disposed in a sealing manner, and the other end of the fixing sleeve 44, which is disposed in a sealing manner, is connected to one end of the rotating shaft 31 extending out of the flow guiding element 20. Further, the fixing sleeve 44 is integrally formed with the rotary shaft 31. The end of the fixing sleeve 44 away from the rotating shaft 31 is open, the magnet 42 is accommodated in the fixing sleeve 44, the outer circumferential surface of the magnet 42 is attached to the inner circumferential surface of the fixing sleeve 44, it can be understood that the magnet 42 is located between the outer circumferential surface of the fixing sleeve 44 and the outer circumferential surface of the mounting portion 12, and the fixing sleeve 44 and the magnet 42 can rotate around the mounting portion 12. Specifically, the magnet 42 is interference fit with the holster 44 or the magnet 42 is adhesively bonded to the holster 44. Further, the end of the fixing sleeve 44 remote from the rotating shaft 31 is in movable contact with the inner wall of the pump housing 10. Of course, in other embodiments, the driving assembly 40 further includes an adapter sleeve movably sleeved on the rotating shaft 31, the adapter sleeve is connected to the inner wall of the liquid guiding cavity 22 through a connecting rib, and two ends of the adapter sleeve are movably abutted to the fixed sleeve 44 and the fan blade 32 respectively, so as to further ensure that the impeller 30 is effectively supported.

Referring to fig. 3 to 5, a liquid pump according to a second embodiment of the present invention includes a pump casing 10a, a flow guide 20a, an impeller 30a and a driving assembly 40 a. The flow guide part 20a is positioned in the liquid storage space 11a, and the flow guide part 20a is provided with a liquid inlet 21a, a liquid guide cavity 22a and a liquid outlet 23a which are sequentially communicated. The impeller 30a is housed in the priming chamber 22 a. The pump casing 10a and the drive unit 40a in the present embodiment have the same structure as the pump casing 10 and the drive unit 40 in the present embodiment, respectively.

Referring to fig. 3, the bottom of the flow guide 20a is attached to the inner wall of the liquid storage space 11a, the liquid inlet 21a is located at the top of the flow guide 20a, and the liquid outlet 23a is located at the side of the flow guide 20a, so that the whole flow guide 20a is immersed in the liquid in the pump housing 10a during liquid pumping, which is beneficial to reducing the height of the flow guide 20a contained in the liquid storage space 11a, and the liquid at a lower level in the liquid storage space 11a can be pumped away.

In this embodiment, the flow guide member 20a is a volute structure, the liquid guide cavity 22a includes an accommodating space 220a and a flow channel 221a that are communicated with each other, the impeller 30a is accommodated in the accommodating space 220a, the flow channel 221a is disposed around the impeller 30a along the circumferential direction of the impeller 30a, the liquid inlet 21a is communicated with the accommodating space 220a and is disposed corresponding to the impeller 30a along the axial direction of the impeller 30a, and the liquid outlet 23a is communicated with the flow channel 221a and is disposed corresponding to the impeller 30a along the radial direction of the impeller 30 a.

Referring to fig. 4, further, two ends of the flow channel 221a are respectively a large end 222a and a small end 223a, as shown in the figure, the cross section of the flow channel 221a gradually increases from the small end 223a to the large end 222a, the liquid discharge port 23a is located at the large end 222a of the flow channel 221a, and the liquid discharge port 23a is connected to an external liquid discharge pipe. The cross section of the flow channel 221a is a section perpendicular to the flow direction of the liquid in the flow channel 221 a.

Referring to fig. 3 again, further, the impeller 30a includes a wheel disc 31a, a wheel ring 32a coaxially spaced with the wheel disc 31a, and a fan blade 33a connected between the wheel disc 31a and the wheel ring 32a, the driving assembly 40a is connected to the wheel disc 31a, and one end of the wheel ring 32a far from the wheel disc 31a extends out of the liquid inlet 21 a. Therefore, the liquid in the liquid storage space 11a enters the space formed by the matching of the wheel disc 31a, the wheel ring 32a and the fan blades 33a through the wheel ring 32a along the axial direction of the impeller 30 a. When the impeller 30a is driven by the driving unit 40a to rotate, the liquid in the space formed by the cooperation of the disk 31a, the rim 32a and the blades 33a generates a rotational centrifugal motion by the rotation of the impeller 30a, continuously flows to the flow channel 221a and moves toward the liquid discharge port 23a, and is finally discharged from the liquid discharge port 23 a.

Referring to fig. 5, the driving assembly 40a includes a coil 41a, a magnet 42a, a fixing member 43a and a fixing sleeve 44 a. The connection relationships between the coil 41a and the stator 43a, between the coil 41a and the pump housing 10a, between the stator 43a and the pump housing 10a, and between the magnet 42a and the stator cover 44a in the present embodiment are the same as the connection relationships between the coil 41 and the stator 43, between the coil 41 and the pump housing 10, between the stator 43 and the pump housing 10, and between the magnet 42 and the stator cover 44 in the first embodiment, respectively.

In this embodiment, the fixing sleeve 44a is located on a side of the wheel disc 31a facing the wheel ring 32a, the fixing sleeve 44a is disposed coaxially with the wheel disc 31a, and the mounting portion 12a sequentially passes through the bottom of the flow guide 20a and the wheel disc 31a and extends into the fixing sleeve 44 a. Specifically, one end of the fixing sleeve 44a close to the wheel ring 32a is closed, one end of the fixing sleeve 44a connected with the wheel disc 31a is open, the wheel disc 31a is provided with an installation opening 34a communicated with the open end of the fixing sleeve 44a, and the bottom of the flow guide piece 20a is provided with a through opening 14a correspondingly communicated with the installation opening 34 a. The magnet 42a is accommodated in the fixing sleeve 44a, specifically, the magnet 42a is mounted into the fixing sleeve 44a from the mounting opening 34a, and further, the magnet 42a is in interference fit with the inner wall of the fixing sleeve 44a, or the magnet 42a is bonded to the inner wall of the fixing sleeve 44 a. The mounting portion 12a extends into the fixing sleeve 44a through the opening 14aa and the mounting opening 34a in sequence, and the magnet 42a is movably sleeved on the mounting portion 12 a. Furthermore, a seal ring 15a is provided between the outer peripheral surface of the mounting portion 12a and the inner peripheral surface of the mounting opening 34a, which effectively improves the sealing property between the mounting portion 12a and the baffle 20 a.

The invention also provides a closestool which comprises the liquid pump and a body connected with the liquid pump. Specifically, the body is equipped with the liquid bath, and the liquid bath bottom is equipped with the drain, and the liquid output of 23 exhaust liquid leakage mouths of drawing liquid pump is to the liquid bath or the drain of body to wash the inner wall in liquid bath or discharge the filth from the drain.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An infusion pump, comprising:

a pump housing having a liquid storage space capable of storing liquid;

the impeller is accommodated in the liquid guide cavity;

2. The aspiration pump of claim 1, wherein the magnet is an annular body, the magnet being disposed around the coil.

3. The liquid pump according to claim 2, wherein the pump housing has a mounting portion, the mounting portion protrudes into the liquid storage space at an inner side of the pump housing, the mounting portion is recessed toward one side of the liquid storage space at an outer side of the pump housing to form a receiving groove, the coil is received in the receiving groove, and the magnet is movably sleeved on the mounting portion.

4. The aspiration pump of claim 3, further comprising a fixture mounted to the pump housing, the fixture being located outside the pump housing and blocking the receiving groove, the coil being mounted to the fixture.

5. The liquid pump according to claim 4, wherein the fixing member includes a base plate, a block disposed on the base plate, and a convex pillar disposed on the block, the base plate is attached to the pump housing, the block is inserted into the receiving groove, the convex pillar is located in the receiving groove, and the coil is wound on the convex pillar.

6. The aspiration pump of claim 3, wherein the drive assembly includes a retaining sleeve coupled to the impeller, the magnet being received within the retaining sleeve.

7. The liquid pump according to claim 6, wherein the liquid guiding member is a cylindrical structure, the liquid inlet and the liquid outlet are respectively located at opposite ends of the liquid guiding member, the impeller includes a rotating shaft and blades disposed on the rotating shaft, one end of the rotating shaft extends from the liquid inlet to the outside of the liquid guiding member, and the fixing sleeve is connected to one end of the rotating shaft extending to the outside of the liquid guiding member.

8. The liquid pump according to claim 7, wherein the flow guide member is of a volute structure, the liquid inlet is arranged in the axial direction of the impeller and corresponds to the impeller, and the liquid outlet is arranged in the radial direction of the impeller and corresponds to the impeller; the impeller include the rim plate, with rim ring that the coaxial interval of rim plate set up and connect in the rim plate with flabellum between the rim ring, fixed cover is located the rim plate orientation one side of rim ring, the installation department passes in proper order the water conservancy diversion spare reaches the rim plate extends to in the fixed cover.

9. The liquid pump according to claim 8, wherein the bottom of the flow guide member is attached to the inner wall of the liquid storage space, and the liquid inlet is located at the top of the flow guide member.

10. A toilet bowl comprising an infusion pump according to any one of claims 1 to 9.