CN211288238U - Pump and method of operating the same - Google Patents

Abstract

The utility model discloses a pump, which comprises a pump shell, a water distribution disc, a motor, a heating assembly, a bush and an impeller, wherein the pump shell is provided with a pump cavity, and the pump shell is provided with a water inlet and a water outlet which are both communicated with the pump cavity; the bushing is installed in the pump shell and comprises a first sleeve body (62) and a second sleeve body (63), the first sleeve body (62) is provided with at least one positioning groove (61), the inner wall of the pump shell is provided with at least one positioning table, and the positioning table (603) is clamped in the positioning groove (61). The utility model discloses can realize the hoop location of pump case and bush.

Description

Pump and method of operating the same

Technical Field

The utility model relates to a pump especially relates to a pump that installation location nature of pump case and bush is good.

Background

Household appliances such as dishwashers often require a power system and a heating system to work in concert to provide power for the media while heating the media. Wherein, the pump is used as a power system to provide conveying power for the medium, thereby being convenient for finishing the washing process.

In the related technology, the pump comprises a motor part and a pump body part, the pump body comprises a pump shell, a pump cavity and a lining are arranged in the pump shell, an impeller is arranged in the pump cavity, and energy conversion is completed through mutual matching of the impeller, the lining and the pump shell. However, the mounting positioning of the pump casing and the liner is to be improved.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a pump, this pump internally mounted location nature is better.

A pump, comprising: the pump comprises a pump shell, a water inlet, a water outlet and a pump cavity, wherein the pump cavity is communicated with the water inlet, the pump cavity is communicated with the water outlet, the pump shell comprises a peripheral wall surrounding the pump cavity, and the water inlet and the water outlet are arranged on the peripheral wall; the bush, the bush at least part accept in the pump chamber, the bush includes the first cover body and the second cover body, the first cover body is equipped with first inner chamber, the second cover body is equipped with the second inner chamber, the first cover body encircle the one end of the second cover body, the first inner chamber of the first cover body with the second inner chamber of the second cover body, the other end of the second cover body with the water inlet intercommunication, the first cover body passes through the pump chamber with the delivery port intercommunication, the first cover body with the pump case perisporium is laminated mutually, the first cover body is equipped with at least one constant head tank, the pump case inner wall is equipped with at least one location platform, the location platform card is located the constant head tank.

This application is equipped with at least one constant head tank through the first cover body, the pump case inner wall is equipped with at least one location platform, the constant head tank with the location platform cooperatees, so that the bush with the pump case location is connected to realize the hoop location of pump case and bush.

In some embodiments, the first sleeve includes a first wall and a second wall, the second wall is attached to the peripheral wall of the pump casing, the positioning groove is disposed on the second wall, and the positioning groove is recessed inward relative to the second wall.

In some embodiments, the at least one detent is two, the two detents being located on opposite sides of the first sleeve central axis, the at least one detent land is two, the two detent lands being located on opposite sides of the pump housing central axis.

In some embodiments, the first wall extends substantially helically around the second sleeve, the first wall comprising a first section provided with a helical start of the first wall and a second section provided with a helical end of the first wall, the first and second sections having different curvatures.

In some embodiments, the spiral end is closer to the liner water inlet than the spiral start end, the first section is a smooth plane, the second section is a smooth plane, a connecting portion is arranged between the first section and the second section, the first section and the second section are connected through the connecting portion, and the curvature of the first section is greater than that of the second section.

In some embodiments, the second wall is located at an outer end of the first sleeve body, the second wall is connected with the first wall, the second wall is connected with an outer edge of the first wall, the first section comprises an outer side connected with the second wall and an inner side located between the second wall and the second sleeve body, and the inner side is higher than the outer side in a direction from the first sleeve body to the second sleeve body, so that the first section is obliquely arranged relative to the second wall, and an included angle between an outer wall surface of the first section and an outer wall surface of the second wall is an obtuse angle.

In some embodiments, the first sleeve body is provided with a liner water outlet which is communicated with the first inner cavity of the first sleeve body and the pump cavity, the second sleeve body is provided with a liner water inlet which is communicated with the second inner cavity of the second sleeve body and the water inlet, and the liner water outlet is at least one.

In some embodiments, the liner outlet is two, the two liner outlets being located on opposite sides of the first sleeve central axis.

In some embodiments, the first cover body is equipped with the third wall, the third wall is smooth plane, the third wall be located the second cover body with between the first wall, and be connected in the second cover body with the first wall, the third wall is equipped with the boss, the boss is located the second cover body with between the second wall, and be connected in the second cover body with the second wall, the boss is located the outer wall surface of bush delivery port, the boss is at least two, at least two the boss is located the relative both sides of first cover body central axis.

In some embodiments, the pump comprises: the heating assembly is connected with the pump shell and comprises a heat conduction disc and a heating element, the heat conduction disc is fixed on the peripheral wall of the pump shell, and the heat conduction disc and the water outlet are arranged on two opposite sides of the peripheral wall of the pump shell; at least part of the motor is arranged in the first inner cavity of the first sleeve body and used for driving water to flow into the pump cavity from the water inlet through the bushing and to be discharged from the water outlet; the impeller is at least partially accommodated in the first inner cavity of the first sleeve body and is connected with the motor; the bearing support is located between the impeller and the motor, and the bearing support is attached to the bottom surface of the first sleeve body of the bushing.

Drawings

FIG. 1 is a perspective view of a pump according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the pump shown in FIG. 1;

FIG. 3 is an exploded view of the pump shown;

FIG. 4 is an exploded view of the pump casing and liner shown in FIG. 3;

FIG. 5 is a perspective view of the bushing shown in FIG. 4;

FIG. 6 is another perspective view of the bushing shown in FIG. 5;

FIG. 7 is a perspective view of the pump housing shown in FIG. 3;

FIG. 8 is a partial enlarged view of the portion circled A shown in FIG. 6;

FIG. 9 is a partial enlarged view of the portion indicated by circle B in FIG. 6;

FIG. 10 is a schematic view of a pressure field flowing within a related art pump;

FIG. 11 is a schematic view of the pressure field flowing within a pump according to an embodiment of the present invention;

reference numerals:

the pump comprises a pump shell 1, a pump cavity 11, a water inlet chamber 111, a water pumping chamber 112, a water inlet 12, a water outlet 13, an impeller 2, a bearing support 3, a bearing limiting seat 31, a sealing plate 32, a connecting part 33, a heating assembly 4, a heat conducting disc 41, a heating element 42, a temperature controller 43, a heat conducting rod 45, a fuse 44, a motor 5, a stator 51, a rotor 52, a motor shaft 53, a bearing 54, a lining 6, a positioning groove 61, a positioning table 603, a first sleeve body 62, a first inner cavity 620, a first wall 621, a second wall 622, a third wall 623, a first section 6211, a second section 6212, a second sleeve body 63, a second inner cavity 630, a lining water outlet 64, a lining water inlet 65, a boss 66, a water dividing disc 7, a cylinder body 71, a flange 72, a cooling.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. 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 devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

As shown in fig. 1 to 11, a pump according to an embodiment of the present invention includes a pump housing 1, an impeller 2, a bearing support 3, a heating assembly 4, a motor 5, a liner 6, and a water diversion disk 7, wherein the pump housing 1 has a pump chamber 11, the water diversion disk 7 is provided at one end of the pump housing 1 (the left end of the pump housing 1 shown in fig. 2), and the heating assembly 4 is provided at the other end of the pump housing 1 (the upper end of the pump housing 1 shown in fig. 2), i.e., the water diversion disk 7, the pump housing 1, and the heating assembly 4 define the pump chamber 11. In other words, as shown in fig. 2, the left end of the pump housing 1 is connected with the water diversion disc 7, the upper end of the pump housing 1 is connected with the heating assembly 4, the water diversion disc 2 and the heating assembly 4 respectively close the left end and the upper end of the pump housing 1 to define a pump cavity 11 in the pump housing 1, wherein the axial direction of the pump housing 1 is the left-right direction, and the liner 6 is assembled in the pump housing 1 and at least partially installed in the pump cavity 11.

The pump shell 1 is provided with a water inlet 12 and a water outlet 13, the water inlet 12 and the water outlet 13 are both communicated with the pump cavity 11, and the axial direction of the water outlet 13 and the axial direction of the water inlet 12 are orthogonal to each other. The water inlet 12 communicates with the pump chamber 11, and the water outlet 13 communicates with the pump chamber 11. External water enters the pump cavity 11 through the water inlet 12 and is discharged through the water outlet 13.

The motor 5 comprises a stator 51 and a rotor 52, the rotor 52 is arranged in the water diversion disc 7, and the stator 51 is positioned outside the water diversion disc 7 and arranged on the periphery of the rotor 52 to form magnetic force. Specifically, the water diversion disk 7 includes a cylinder 71 and a flange 72, a first section (a left end of the cylinder 71 shown in fig. 2) of the cylinder 71 is closed, the flange 72 extends outward in a radial direction of the cylinder 71 from an outer periphery of a second section (a right end of the cylinder 71 shown in fig. 2) of the cylinder 71, the flange 72 is connected to the pump housing 1, the rotor 52 is provided inside the cylinder 71, and the stator 51 surrounds the outer periphery of the cylinder 71. Further, as shown in fig. 2, the right end of the stator 51 is connected to the flange 72, and the left end of the stator 51 is connected to the cover 8. The bearing 54 is mounted on the bearing bracket 3, and the bearing 54 is used for supporting the motor shaft 53, i.e. the outer ring of the bearing 54 is fixed relative to the bearing bracket 3, and the inner ring of the bearing 54 is fixed relative to the motor shaft 53.

In other words, as shown in fig. 2, the left end of the pump housing 1 is connected to the flange 72 of the water diversion disc 7, the left end of the cylinder 71 is closed, the right end of the cylinder 71 is open, the rotor 52 is disposed inside the cylinder 71, that is, the motor 5 is disposed at the left end inside the pump cavity 11, the middle part of the motor 5 is provided with the motor shaft 53 extending and rotating in the axial direction thereof, the left end of the motor shaft 53 is disposed inside the cylinder 71, the right end of the motor shaft 53 penetrates out from the right end of the cylinder 71 and is connected to the impeller 2 inside the pump cavity 11, and the stator 51 is disposed around the outer periphery of the cylinder 71 and is connected to the. Specifically, a seal (not shown) is provided between the diverter tray 2 and the first section of the pump housing 1, and the seal may be, for example, a 0-ring seal, but the present invention is not limited thereto.

As can be understood, the rotor 52 is arranged inside the water diversion disc 7, and the motor 5 can be cooled by water in the pump, so that the cooling efficiency of the motor is improved; the motor shaft 53 of the motor 5 drives the impeller 2 to rotate, so that the impeller 2 drives the water flow in the pump cavity 11 to rotate and the impeller 2 applies work to the water flow, the water flow obtains energy and flows out, and at the moment, the kinetic energy and the pressure energy of the water flow are increased.

The bearing support 3 is connected with the water distribution disc 7, the bearing support 3 and the water distribution disc 7 jointly define a cooling cavity 74, cooling water is filled in the cooling cavity 74, and the cooling water in the cooling cavity 74 can play a good cooling role in the rotor 52. The bearing holder 3 has a gas discharge hole (not shown) for discharging gas in the cooling chamber 74. Thus, when the cooling water flows into the cooling chamber 74, the gas in the cooling chamber 74 is gradually discharged through the exhaust hole along with the inflow of the cooling water, the flange 72 of the bearing bracket 3 is connected to the shaft, the motor shaft 53 penetrates through the bearing bracket 3, that is, the bearing bracket 3 has an avoiding hole, and one end of the motor shaft 53 penetrates through the avoiding hole and extends into the cooling chamber 74 to be fixed relative to the rotor 52. The bearing support 3 comprises a connecting part 33, a sealing plate 32 and a bearing limiting seat 31 which are sequentially connected along the radial direction, and the connecting part 33, the sealing plate 32 and the bearing limiting seat 31 can be integrally formed, so that the overall structural strength of the bearing support 3 is improved conveniently. The connecting part 33 and the first bearing limiting seat 31 are both circular rings, the connecting part 33 is connected with the water distribution disc 7, and the periphery of the connecting part 33 is connected with the water distribution disc 7 in a sealing mode.

The liner 6 is installed in the pump chamber 11 and connected to the water inlet 12 to divide the pump chamber 11 into an inlet chamber 111 and a pumping chamber 112, wherein the inlet chamber 111 is adjacent to the water inlet 12, the inlet chamber 111 is communicated with the pumping chamber 112, and the liner outlet 64 of the liner 6 is communicated with the inlet chamber 111 and the pumping chamber 112. In other words, as shown in fig. 2, the liner 6 is disposed at the left end inside the pump chamber 11, and divides the pump chamber 11 into an inlet chamber 111 and a pumping chamber 112 communicating with each other, and the pumping chamber 112 is located closer to the heating assembly 4 than the pumping chamber 112, i.e., the pump chamber 11 includes the inlet chamber 111 where the liner 6 communicates with the inlet 12 and the pumping chamber 112 where the liner 5 communicates with the outlet 13. Specifically, the impeller 2 is provided inside the pumping chamber 112.

According to the pump provided by the embodiment of the invention, the pump cavity 11 can be divided into the water inlet chamber 111 and the water pressing chamber 112 which are communicated with each other by arranging the lining 6, the pump can be used as an energy conversion device of water flow by being matched with the impeller 2, the kinetic energy and the pressure energy of the water flow are improved, the structure is compact, and the pump can be suitable for occasions with limited space; by providing the substantially cylindrical water distribution disk 7, the rotor 52 is provided in the water distribution disk 7 and the stator 51 is located outside the water distribution disk, the motor 5 can be cooled by water in the pump, and the cooling efficiency of the motor 5 is improved.

In some embodiments, as shown in fig. 2 and 4-7, the liner 6 includes a first sleeve 62 and a second sleeve 63, a portion of the pump cavity 11 located on a first side of the liner 6 (a right side of the liner 6 is communicated with the water inlet pipe 12) forms a water inlet chamber 111, a second side of the liner 6 located on a second side of the pump cavity 11, an upper side and a lower side of the liner 6 are communicated with the water outlet pipe, and a portion close to the heating assembly 4 forms a water pressing chamber 111, the second sleeve 63 is provided with a liner water inlet 65, the liner water inlet 65 is communicated with the water inlet 12, the first sleeve 62 is provided with two liner water outlets 64, the two liner water outlets 64 are uniformly arranged on the liner 6, and the two liner water outlets 64. The liner 6 is provided with a liner inlet 65, the liner inlet 65 being in communication with the pump housing inlet 12, it being understood that the liner inlet 65 is in communication with the inlet 12, in particular, the liner outlet 64 may be provided as at least one, and for practical purposes, the liner outlets 64 may be provided as two, three or four or even more.

In some embodiments, the first sheath 62 has a first inner cavity 620, the second sheath 63 has a second inner cavity 630, the first sheath 62 is connected to one end of the second sheath 63, the first inner cavity 620 of the first sheath is communicated with the second inner cavity 630 of the second sheath, and the other end of the second sheath 63 is communicated with the water inlet 12. The bottom surface of the bush 6, i.e. the surface close to the motor 5, is attached to the connecting portion 33 of the bearing bracket 3, in other words, the bottom surface of the first sleeve 62 is attached to the connecting portion 33 of the bearing bracket 3, the first inner cavity 620 of the first sleeve 62 is communicated with the water inlet 12, and the second inner cavity 630 of the second sleeve 63 is communicated with the water outlet 13.

As shown in fig. 5, the first sleeve 62 includes a first wall 621, the first wall 621 is located on the outer periphery of the first sleeve 62, the first wall 621 extends around the first sleeve 62 in a substantially spiral shape, and the size of the first wall 621 increases gradually in the axial direction, and the first wall 621 is disposed at the left end of the first sleeve 62 and is close to the second sleeve 63.

Specifically, the first wall 621 is two substantially spirally extending first walls 621, one substantially spirally spiraling from left to right and the other substantially spirally spiraling from right to left, the axial dimension of the first wall 621 gradually increases along the spirally extending direction, a substantially spirally beginning end is connected to another substantially spirally ending end, a substantially spirally ending end is connected to another substantially spirally beginning end, and corresponds to the two liner water outlets 64 of the first sleeve 62, one spiral beginning end is adjacent to one liner water outlet 64, and the other spiral beginning end is adjacent to the other liner water outlet 64. The spiral end is closer to the liner water inlet 65 than the spiral start end, the two liner water outlets 64 are symmetrically arranged about the central axis of the first sleeve 62, and similarly, the two spiral extending first walls 621 are distributed on two opposite sides of the central axis of the first sleeve 62, in other words, the two spiral extending first walls 621 are symmetrically arranged about the central axis of the first sleeve 62, and the number of the liner water outlets 64 is the same as that of the first walls 621.

The first wall 621 comprises a first segment 6211 and a second segment 6212, the first segment 6211 being provided with a spiral start of the first wall 621, the second segment 6212 being provided with a spiral end of the first wall 621, in other words, the first segment 6211 being close to the spiral start of the first wall 621, the second segment 6212 being close to the spiral end of the first wall 621, the curvatures of the first segment 6211 and the second segment 6212 being different, the first segment 6211 being a smooth plane, the second segment 6212 being a smooth plane, a connecting portion being provided between the first segment 6211 and the second segment 6212, the first segment 6211 and the second segment 6212 being connected by the connecting portion, the curvature of the first segment 6211 being larger than the curvature of the second segment 6212, the first segment 6211 and the second segment 6212 forming a substantially dogleg shape with the connecting portion, wherein the connecting portion is the lowest of the dogleg shape, the first segment 6211 and the second segment 6212 being connected by the connecting portion smoothly so that the water generating the backflow is reduced and the energy loss is.

The pump casing 1 includes a peripheral wall surrounding the pump chamber 11, the first casing 62 includes a second wall 622, the second wall 622 is attached to the peripheral wall of the pump chamber 11, the second wall 622 is located at an outer end of the first casing 62, the second wall 622 is connected to the first wall 621, a curvature of the first section 6211 is a variable curvature, and a curvature of the first section 6211 is gradually increased in a direction approaching the second wall 622. Water enters the pump from the water inlet 12, then enters the lining 6 through the lining water inlet 65, enters the first inner cavity 620 of the first sleeve body 62, then enters the second inner cavity 630 of the second sleeve body 63, flows from the spiral starting end to the spiral tail end of the first wall 62, then flows out of the lining from the lining water outlet 64, is heated by the heating component 4, and flows out of the pump from the water outlet 13. Further, the liner inlet 65 is provided on the central axis of the liner 6, and more specifically, the liner 6 and the pump case 1 are coaxially provided.

Specifically, for the sake of clarity of description of the liner structure, the structure of one liner water outlet 64 is described, the first liner 62 includes a first wall 621, a second wall 622 and a third wall 623, the second wall 622 is connected to the first wall 621, the first wall 621 is connected to the third wall 623, the direction of the second wall 622 is substantially parallel to the direction of the central axis of the second liner 63, the second wall 622 is in contact with the peripheral wall of the pump housing 1, and the second wall 622 is annular. The first wall 621 includes a first section 6211 and a second section 6212, the first section 6211 and the second section 6212 are connected, the first wall 621 is substantially spiral-shaped, the first section 6211 of the first wall 621, i.e., the spiral beginning of the first wall 621 is close to the liner water inlet 65 and is spiral in a left-to-right direction, the second section 6212 of the first wall 621, i.e., the spiral end is close to the liner water outlet 64, in other words, the spiral end is closer to the liner water inlet 65 than the spiral beginning, and further, the first wall 621 is gradually spiral in an axial direction along the direction in which the spiral extends. It is understood that the first wall 621, the second wall 622 and the third wall 623 may be integrally formed or may be separately formed, and the first segment 6211 and the second segment 6212 may be integrally formed or may be separately formed and connected to each other by a connecting member.

More specifically, the first wall 621 includes a first segment 6211 and a second segment 6212, the first segment 6211 is smoothly disposed, the second segment 6212 is smoothly disposed, the first segment 6211 and the second segment 6212 are connected by a connecting portion, the connecting portion is a substantially broken line shape, so that the curvature of the first segment 6211 is different from that of the second segment 6212, thereby reducing the water generating backflow, reducing the energy loss, and improving the overall efficiency of the water pump. Further, the curvature of the first segment 6211 is greater than that of the second segment 6212, specifically, the curvature of the first segment 6211 is a fixed curvature, the curvature of the second segment 6212 is a fixed curvature, the first segment 6211 is inclined in a direction toward the second wall 622, and more specifically, the first segment 6211 includes an outer side connected to the second wall 622 and an inner side located between the second wall 622 and the second sleeve 63, and the inner side is higher than the outer side in a direction from the first sleeve 62 to the second sleeve 63, so that the first segment 6211 is inclined with respect to the second wall 622, so that when fluid water flows through the throat of the bushing, a pressure difference between two sides of the throat is reduced, so that water flowing back is reduced, energy loss is reduced, and overall efficiency of the pump is improved. More specifically, the angle between the outer wall surface of the first section 6211 and the outer wall surface of the second wall 622 is obtuse, so that the amount of water that is caused to flow back is reduced, energy loss is reduced, and the overall efficiency of the pump is improved. The terms "first" and "second" are used herein 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 "second" may explicitly or implicitly include at least one such feature.

It can be understood that the external water enters the water inlet chamber 111 through the water inlet 12, the water in the water inlet chamber 111 enters the water pumping chamber 112 through the liner water outlet 64, and the water in the water pumping chamber 11 is discharged through the water outlet 13 of the pump shell.

It will be appreciated that the liner 6 with the first sleeve 62 and the second sleeve 63 is mounted in the pump chamber 11, dividing the pump chamber 11 into an intake chamber 111 and a pumping chamber 112, since the first wall 621 of the first sleeve 62 presents a spiral configuration, the volume inside the pumping chamber 112 varies axially, being able to increase the kinetic and pressure energy of the flow when cooperating with the impeller 2; and the liner water inlet 65 of the liner 6 is provided adjacent to the start of the spiral of the first wall 621 and the liner water outlet 64 of the liner 6 is provided at the end of the spiral of the first wall 621, so that the axial size of the pump can be minimized while ensuring the kinetic and pressure energy of the water flow.

In some embodiments, the first sleeve 62 is provided with a third wall 623, the third wall 623 being a smooth plane, located between the liner water inlet 65 and the first wall 621 and connected to the first sleeve 62 and the first wall 621, it being understood that the third wall 623 may not be provided and the first wall 621 may be connected directly to the second sleeve 63, and for structural purposes, the third wall 623 may be provided for connecting the first wall 621 and the second sleeve 63. More specifically, the third wall 623 is provided with at least one boss 66, the boss 66 is located between the liner water inlet 65 and the liner water outlet 64, is connected to the outer wall surface of the second sleeve 63, and is connected to the wall surface of the liner water outlet 64, specifically, two bosses 66 are located between the liner water outlet 64 and the liner water inlet 65, the number of the bosses is the same as that of the liner water outlets 64, and further, the outer wall surface of the second sleeve 63 may be provided with a reinforcing rib (not shown in the drawings) to enhance the stability of the liner structure.

Furthermore, the second wall 622 of the liner 6 is provided with at least one positioning groove 61, the inner wall of the pump casing is provided with at least one positioning table 603, the positioning groove 61 is inwardly recessed relative to the second wall 622, the positioning table 603 is clamped in the positioning groove 61, and the positioning groove 61 is matched with the positioning table 603, so that the liner 6 is fixedly connected with the pump casing 1. Further, the second wall 62 is provided with two positioning grooves 61, the inner wall of the pump case is provided with two positioning platforms 603, the positioning grooves 61 are close to one side of the liner water outlet 64, the two positioning grooves 61 are uniformly distributed on the second wall 622 of the liner, the two positioning platforms 603 are uniformly distributed on the inner wall of the pump case 1, the positioning platforms 603 are clamped on the positioning grooves 61, the positioning platforms 603 are matched with the positioning grooves 61, in other words, the two positioning grooves 61 are distributed on the second wall 622 of the liner 6 on two opposite sides of the central axis of the first sleeve body 62, the two positioning grooves 61 are symmetrically arranged about the central axis of the first sleeve body 62, the two positioning platforms 603 are distributed on two opposite sides of the central axis of the first sleeve body 62 on the inner wall of the pump case 1, and the two positioning platforms 603. It will be appreciated that the location of the locating lands 63 is one, two or more and that where the second wall 632 of the liner 6 is provided with a plurality of locating grooves 61, the plurality of locating grooves 61 are spaced circumferentially of the liner 6, the location of the liner 6 within the pump chamber 11 can be facilitated by the location of the locating lands 603 on the inner wall of the pump casing 1 which engage within the locating grooves 61. More specifically, the liner 6 and the pump casing 1 are coaxially arranged, the inner wall surface of the pump casing 1 is stepped, and the end of the liner 6 can be fitted at the step to further realize the circumferential positioning of the liner 6, in other words, the radial positioning of the liner 6.

First set 62 includes first wall 621 and second wall 622, and constant head tank 61 sets up in second wall 622, and constant head tank 61 is inside sunken setting for second wall 622 to cooperate with location platform 63, and location platform 63 card is located constant head tank 61, with the hoop location of realizing bush 6, can realize guaranteeing that the position of bush can not produce the dislocation because of the relative rotation of motor 5 and pump case 1 when whole pump assembles. The positioning table 63 on the inner wall of the pump shell 1 and the positioning groove 61 on the outer wall of the lining 6 are matched in a screwing mode to achieve correct installation of parts, the positioning table 63 is additionally arranged on the inner wall of the pump shell 1, the positioning groove 61 is formed in the outer wall surface of the lining 6, and therefore the sealing effect of the sealing ring can be affected due to the change of the structure of the pump shell when positioning is achieved.

More specifically, the positioning groove 61 is slightly lower than the second wall 632 in the axial direction, the positioning groove 61 is a square groove, the positioning table is a square boss, the groove and the boss are matched with each other to position the liner 6 in the pump cavity 11, and the relative position of the liner 6 and the pump shell 1 is not changed when the pump shell 1 and the motor 5 rotate relatively during the assembly of the whole pump, so that the hydraulic performance is affected. It will be appreciated that the recess may have other shapes, such as circular or rectangular, and that the corresponding boss structure may also have a circular or rectangular shape, it being understood that the invention is not limited thereto.

Further, one side (upper side shown in fig. 5) of the positioning groove 61 and the liner water outlet 64 are located on the same plane on the outer wall surface, one side (right side shown in fig. 5) of the positioning groove 61 coincides with a part of the outer end of the first wall 621, one side (left side shown in fig. 5) of the positioning groove 61 coincides with the outer end part of the first wall 622, one side (lower side shown in fig. 5) of the positioning groove 61 is located on the outer end of the second wall 622, the length of the positioning groove 61 in the up-down direction is smaller than the length of the first segment 6211, and the length of the positioning groove 61 in the left-right direction is smaller than the height of the second.

In some embodiments, the heating assembly 4 includes a thermally conductive disk 41 and a heating element 42, the thermally conductive disk 41 being attached to a second section of the pump housing 1 (the upper end of the pump housing 1 shown in fig. 2). In other words, the heat conducting disc 41 is connected with the left end of the pump shell 1, the heat conducting disc 41, the pump shell 1 and the water distribution disc 7 at the right end of the pump shell 1 define the pump cavity 11 together, the heat conducting disc 41 and the water outlet are arranged on two opposite sides of the peripheral wall of the pump shell, and the included angle between the water outlet and the heat conducting disc is 0-180 degrees. Further, the material of the heat conducting plate 41 is ceramic, and can play a role in insulating and conducting heat. Further, a seal, which may be a 0-ring seal, is provided between the heat conductive disk 41 and the pump housing 1, it being understood that the present invention is not limited thereto.

It can be understood that the heat conductive plate 41 is disposed adjacent to the water inlet chamber 111, the heating element 42 and the liquid in the water inlet chamber 111 are separated from both sides of the heat conductive plate 41, heat is transferred through the heat conductive plate 41, the safety of power supply is improved, and the uniformity of heating is improved.

As shown in fig. 3, the heating element 42 is a heating pipe, the heating pipe is disposed on the outer end surface of the heat conducting disc 41, specifically, the heat conducting disc 41 has a concave portion, the opening of the concave portion faces outward, the concave portion is in a ring shape extending along the circumferential direction of the heat conducting disc 41, the heating pipe is embedded in the ring-shaped concave portion of the heat conducting disc 41, and the fluid in the pump chamber 11 is heated by the heating pipe on the outer end surface of the heat conducting disc 41. In other words, as shown in fig. 2, the heat conductive disk 41 has a recess recessed to the right, and the recess is provided along a circumference of the heat conductive disk 41 to form a ring shape in which the heating pipe is provided.

Furthermore, the heating assembly 4 further includes a temperature controller 43, a fuse 44 and a heat conducting rod 45, wherein the temperature controller 43 and the fuse 44 are disposed on an outer end surface of the heat conducting disc 1, and the temperature controller 43 and the fuse 44 are connected in series with the heating element 42 through the heat conducting rod 45. In other words, the left end surface of the heat conducting plate 1 is further provided with a temperature controller 43, a fuse 44 and a heat conducting rod 45, wherein the temperature controller 43 is electrically connected to the heating element 42 through the heat conducting rod 45, and the fuse 44 is electrically connected to the heating element 42 through the heat conducting rod 45. Specifically, the thermostat and the fuse are fixed to the outer end surface of the heat conductive plate 41 by fixing members, which may be bolts and nuts, and the present invention is not limited thereto. It can be understood that, by arranging the temperature controller 43 and the fuse 44 on the heat conducting plate 41, the temperature can be monitored in real time, and the safety performance is improved. Further, the temperature controller 43 and the fuse 44 are arranged in parallel, and the heat conduction rod 45 connecting the temperature controller 43 and the heating pipe and the heat conduction rod 45 connecting the fuse 44 and the heating pipe are arranged substantially in parallel with each other.

A pump according to an embodiment of the present invention will be described with reference to fig. 1-10.

As shown in fig. 1 to 7, a pump according to an embodiment of the present invention includes a pump case 1, an impeller 2, a bearing bracket 3, a heating assembly 4, a motor 5, a liner 6, and a water diversion disc 7, wherein a left end of the pump case 1 is connected to the water diversion disc 2, an upper end of the pump case 1 is connected to the heating assembly 4, and the water diversion disc 2 and the heating assembly 4 respectively close a right end and an upper end of the pump case 1 to define a pump chamber 11 within the pump case 1. The pump case 1 is provided with a water inlet and a water outlet, as shown in fig. 1, the water inlet is arranged in the axial direction of the pump case 1, the water outlet is arranged on the peripheral wall of the pump case 1, and the water outlet and the heating assembly 4 are arranged at intervals.

The pump according to the embodiment of the present invention includes a pump housing 1, an impeller 2, a bearing support 3, a heating assembly 4, a motor 5, and a liner 6, wherein the pump housing 1 has a pump chamber 11, a water diversion disc 7 is provided at a first section of the pump housing 1 (the left end of the pump housing 1 shown in fig. 2), and the heating assembly 4 is provided at a second section of the pump housing 1 (the upper end of the pump housing 1 shown in fig. 1), i.e., the water diversion disc 7, the pump housing 1, and the heating assembly 4 define the pump chamber 11. In other words, as shown in fig. 2, the left end of the pump casing 1 is connected with the water diversion disc 7, the upper end of the pump casing 1 is connected with the heating assembly 4, the water diversion disc 2 and the heating assembly 4 respectively close the left end and the upper end of the pump casing 1 to define the pump cavity 11 in the pump casing 1, the bearing support 3 is located between the impeller 2 and the motor 5, and the bearing support 3 is attached to the bottom surface of the first sleeve 62 of the bushing 6.

External water enters the pump chamber 11 through the water inlet 12 and is discharged through the water outlet 13, and the axial direction of the water outlet and the axial direction of the water inlet are orthogonal to each other.

The water diversion disc 7 comprises a cylinder body 71, a flange 72 and a cofferdam, wherein the flange 72 extends outwards along the radial direction of the cylinder body 71 from the outer periphery of the left end of the cylinder body 71, the cofferdam extends towards the left end of the cylinder body 71 along the axial direction of the cylinder body 71 from the outer periphery of the flange 72, the cofferdam is connected with the left end of the pump shell 1, and a 0-shaped sealing ring is arranged between the flange 22 and the pump shell 1. The bearing support 3 comprises a connecting part 33, a sealing plate 32 and a bearing limiting seat 31 which are sequentially connected along the radial direction, and the periphery of the connecting part 33 is hermetically connected with the water distribution disk 7.

The motor 5 comprises a stator 51 and a rotor 52, the motor 5 is arranged at the right end in the pump cavity 11, a motor shaft 53 which extends along the axial direction of the motor 5 and can rotate is arranged at the elbow part of the motor 5, the left end of the motor shaft 53 and the rotor 52 are arranged inside the cylinder 51, the left end of the cylinder 51 is opened, the right end of the cylinder 51 is closed, the right end of the motor shaft 53 penetrates out of the right end of the cylinder 21 and is connected with the impeller 2 in the pump cavity 11, the stator 51 surrounds the periphery of the cylinder 51, the right end of the stator 51 is connected with the left end face of the flange 52, the left end of the stator 51 is connected with the housing 8, and it can be understood that the stator 51 surrounds. The outer race of the bearing 54 is fixed to the bearing holder 3, and the inner race of the bearing 54 is fixed to the motor shaft 53.

The heating assembly 4 comprises a heat conducting disc 41, a heating element 42, a temperature controller 43, a fuse 44 and a heat conducting rod 45, the heat conducting disc 41 is connected with the left end of the pump shell 1, the heat conducting disc 41, the pump shell 1 and the water distribution disc 2 at the right end of the pump shell 1 define a pump cavity 11 together, the heat conducting disc 41 is made of ceramic and can play a role in insulation and heat conduction, and a 0-shaped sealing ring is arranged between the heat conducting disc 41 and the pump shell 1.

The heating element 42 is connected to the heat conducting plate 41, and the heating element 42 may be a heating pipe (as shown in fig. 3). The upper end surface of the heat conducting disk 41 is further provided with a temperature controller 43, a fuse 44 and a heat conducting rod 45, wherein the temperature controller 43 is connected with the heating element 42 in series through the heat conducting rod 45, and the fuse 44 is connected with the heating element 42 in series through the heat conducting rod 45. The temperature controller 43 and the fuse 44 are arranged on the heat conducting disc 41, so that the temperature can be monitored in real time, and the safety performance is improved. The heat conduction rod 45 connecting the temperature controller 43 and the heating pipe and the heat conduction rod 45 connecting the fuse 44 and the heating pipe are disposed substantially parallel to each other.

The liner 6 is assembled in the pump chamber 11 and is arranged adjacent to the water inlet 12, the liner 6 and the pump casing 1 are coaxially arranged, the liner 6 can divide the pump chamber 11 into an inlet chamber 111 adjacent to the water inlet 12 and a pumping chamber 112 adjacent to the water outlet 13, and the liner water inlet 65 on the liner 6 can communicate with the inlet chamber 111 and the pumping chamber 112.

The liner 6 is provided with a first sleeve 62 and liner water outlets 64, the first sleeve 62 includes a first wall 621, a second wall 622 and a third wall 623, the liner 6 is provided with two liner water outlets 64, the two liner water outlets 64 are located on the second wall 622, the two liner water outlets 64 are uniformly distributed on the first sleeve 62, the two liner water outlets 64 are distributed on two opposite sides of the central axis of the first sleeve 62, the bottom surface of the second wall 622 of the liner 6, namely the surface close to the motor 5 is attached to the surface of the connecting portion 33 of the bearing support 3 close to the impeller 2, the second wall 622 is attached to the peripheral wall of the pump cavity 11, the second wall 622 is located at the outer end of the first sleeve 62, and the second wall 622 is connected to the outer edge of the first wall 62.

The liner 6 is provided with a second sleeve body 63 and a liner water inlet 65, the liner water inlet 65 is positioned on the right side of the central axis of the liner 6, the first wall 621 extends spirally along the axial direction of the liner 6 and surrounds the periphery of the liner water inlet 65, the spiral end is closer to the liner water inlet 65 relative to the spiral start end, the spiral start end of the first wall 621 is positioned on one end face of the liner 6, the spiral end of the first wall 621 is positioned on the other end face of the liner 5, the spiral start end of the first wall 621 is adjacent to the liner water inlet 65, the spiral end of the first wall 621 is positioned on the liner water outlet 64, the size of the first wall 621 in the axial direction is gradually increased along the direction in which the spiral extends, the first sleeve body 62 is cut along a plane perpendicular to the axial direction of the liner 6, and the bottom face of the first sleeve body 62 is two pieces which. The liner water inlet 65 is communicated with the water inlet chamber 111 and the water pressing chamber 112, the liner water inlet 65 is arranged close to the water inlet 12, the outer wall of the second sleeve body 63 is attached to the inner wall surface of the water inlet 12, so that water can enter the liner 6 from the water inlet 12, and the water can be discharged from the water outlet 13 under certain pressure through the overflowing action of the liner 6. The first wall 621 of the first sleeve 62 includes a first segment 6211 and a second segment 6212, the first segment 6211 is close to the spiral beginning of the first wall 621, the second segment 6212 is close to the spiral end of the first wall 621, the first segment 6211 and the second segment 6212 are both smooth and flat, and are smoothly connected, the curvature of the first segment 6211 is larger than that of the second segment 6212, more specifically, the first segment 6211 includes an outer side connected to the second wall 622 and an inner side located between the second wall 622 and the second sleeve 63, and the inner side is higher than the outer side in the direction from the first sleeve 62 to the second sleeve 63, so that the first segment 6211 is obliquely arranged relative to the second wall 622, and the included angle between the outer wall surface of the first segment 6211 and the outer wall surface of the second wall 622 is an obtuse angle, so as to reduce the backflow amount of water flowing out from the liner water outlet 64, thereby reducing energy loss and further improving the overall working efficiency of the pump.

The first sleeve 62 is provided with a third wall 623, the third wall 623 being a smooth plane, located between the liner water inlet 65 and the first wall 621, and connected to the second sleeve 63 and the second wall 622 for ease of structural connection and size. The first wall and the third wall 623 are provided with two bosses 66, and the bosses 66 are located between the liner water inlet 65 and the liner water outlet 64, connected with the outer wall surface of the second sleeve body 63, and connected with the wall surface of the liner water outlet 64, so as to enhance the structural stability.

The second wall 6 of the liner 6 is provided with two positioning grooves 61 at the spiral beginning of the first wall 621, the positioning grooves 61 are recessed inwards relative to the second wall 622, the positioning grooves 61 are adjacent to the liner water outlet 64, the inner wall of the pump case 1 is provided with a positioning table 603 matched with the positioning grooves 61, and the positioning table 603 is clamped in the positioning grooves 61. The inner wall of pump case 1 personally submits the step form, and the tip of bush 6 can cooperate in the step with the further hoop location that realizes bush 6 to realize bush 6 at hoop location and radial location, thereby can not cause the removal of bush and pump case relative position when pump case and motor relative rotation when carrying out the assembly of whole pump, and then can not influence hydraulic performance.

The effect of the pump according to the embodiment of the present invention will be described with reference to fig. 10 and 11.

Comparing fig. 10 and 11, it can be seen that the pressure field of the pump of the embodiment of the present invention and the speed field of the conventional pump are compared: the first section 6211 of the bushing 6 has a curvature greater than the curvature of the second section 6212, the curvature of the first section 6211 increasing in a direction approaching the second wall 622, the amount of backflow of fluid may be reduced,

the second wall 622 of the bush 6 is annular and the speed of the fluid flowing in the inner chamber 620 of the first sheath body is gradually increased. When the water flows through the partition tongue through the water outlet 64 of the lining sleeve, the fluid flows back to the throat part of the partition tongue due to the existence of pressure difference and is recombined with the fluid flowing out of the impeller 2, and energy loss is caused. The first wall 621, which is substantially spiral in the original structure, extends according to a fixed curvature, so that the gap of the partition tongue at the water outlet 64 of the liner is large, the pressure difference at the outlet is large, the areas of the flow cross sections are equal, the liquid reflux amount collected by the liner 6 is large, and the liquid reflux amount is mixed with the fluid newly discharged by the impeller 2, so that the energy loss is large. Therefore, for the liner 6 with a fixed curvature of the first wall 621, the speed of the fluid discharged from the impeller 2 gradually increases while flowing in the inner cavity 620 of the first sleeve body, but the energy loss is large, after the energy is converted by the liner 6, the liquid speed of the section of the water outlet 64 of the liner is large, the energy loss generated in the subsequent path is large, and the efficiency of the whole pump is reduced. The inner wall surface of the first sleeve body 62 which is treated with different curvatures is positioned between the annular shape and the spiral shape, the treatment with different curvatures is carried out at the position of the tongue, the gap of the tongue is reduced, the pressure difference at the throat part of the water outlet 64 of the lining is reduced, the reflux quantity is reduced, and therefore the loss of the part is reduced. Kinetic energy is relatively small after energy conversion is carried out on the lining 6, and the conversion from kinetic energy to static pressure energy can increase the lift and the efficiency of the water pump as a whole.

As can be seen from the pressure field, the pressure gradient of the variable-curvature liner 6 at the liner water outlet 64 is small, and the pressure gradient of the fixed-curvature liner 6 at the same section is large, so that the energy loss is more.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A pump, comprising:

the pump comprises a pump shell, wherein the pump shell (1) is provided with a water inlet (12), a water outlet (13) and a pump cavity (11), the pump cavity (11) is communicated with the water inlet (12), the pump cavity (11) is communicated with the water outlet (13), the pump shell (1) comprises a peripheral wall surrounding the pump cavity (11), and the water inlet (12) and the water outlet (13) are arranged on the peripheral wall;

the bush, bush (6) at least part accept in pump chamber (11), bush (6) are including the first cover body (62) and the second cover body (63), the first cover body is equipped with first inner chamber (620), the second cover body is equipped with second inner chamber (630), the first cover body (62) encircle the one end of the second cover body (63), the first inner chamber (620) of the first cover body with second inner chamber (630) of the second cover body are linked together, the other end of the second cover body (63) with water inlet (12) intercommunication, the first cover body (62) pass through pump chamber (11) with delivery port (13) intercommunication, the first cover body (62) with pump case (1) perisporium is laminated mutually, the first cover body (62) are equipped with at least one constant head tank (61), pump case (1) inner wall is equipped with at least one location platform (603), the positioning table (603) is clamped in the positioning groove (61).

2. The pump according to claim 1, characterized in that said first sleeve (62) comprises a first wall (621) and a second wall (622), said second wall (622) being in abutment with a peripheral wall of said pump housing (1), said positioning slot (61) being provided in said second wall (622), said positioning slot (61) being arranged in an inwardly recessed manner with respect to said second wall (622).

3. The pump of claim 2, wherein said at least one detent (61) is two, two of said detents (61) being located on opposite sides of a central axis of said first sleeve (62), two of said at least one detent (603), two of said detents (603) being located on opposite sides of a central axis of said pump housing.

4. A pump according to claim 2, characterized in that the first wall (621) extends substantially helically around the second casing (63), the first wall (621) comprising a first section (6211) and a second section (6212), the first section (6211) being provided with a helical start of the first wall (621), the second section (6212) being provided with a helical end of the first wall (621), the first section (6211) and the second section (6212) having different curvatures.

5. The pump according to claim 4, characterized in that said second sheath (63) is provided with a bushing water inlet (65), said screw extremity being closer to said bushing water inlet (65) than to said screw origin, said first section (6211) being a smooth plane, said second section (6212) being a smooth plane, a connection being provided between said first section (6211) and said second section (6212), said first section (6211) and said second section (6212) being connected by a connection, the curvature of said first section (6211) being greater than the curvature of said second section (6212).

6. The pump according to claim 4, characterized in that the second wall (622) is located at the outer end of the first sleeve (62), the second wall (622) being connected to the outer edge of the first wall (621), the first section (6211) comprising an outer side connected to the second wall (622) and an inner side located between the second wall (622) and the second sleeve body (63), the inner side being higher than the outer side in the direction from the first sleeve body (62) to the second sleeve body (63), so that the first section (6211) is arranged obliquely with respect to the second wall (622), the angle between the outer wall surface of the first section (6211) and the outer wall surface of the second wall (622) being obtuse.

7. The pump according to claim 4, characterized in that the first sleeve body (62) is provided with a liner water outlet (64), the liner water outlet (64) communicates the first inner cavity (620) of the first sleeve body (62) and the pump cavity (11), the second sleeve body (63) is provided with a liner water inlet (65), the liner water inlet (65) communicates the second inner cavity (630) of the second sleeve body (63) and the water inlet (12), and the liner water outlet (64) is at least one.

8. The pump of claim 7, wherein the liner outlet (64) is two, the two liner outlets (64) being located on opposite sides of a central axis of the first sleeve (62).

9. The pump according to claim 7, characterized in that said first sleeve body (62) is provided with a third wall (623), said third wall (623) being a smooth plane, said third wall (623) being located between said second sleeve body (63) and said first wall (621) and being connected to said second sleeve body (63) and to said first wall (621), said third wall (623) being provided with a boss (66), said boss (66) being located between said second sleeve body (63) and said second wall (622) and being connected to said second sleeve body (63) and to said second wall (622), said boss (66) being located on the outer wall surface of said liner outlet (64), said boss (66) being at least two, at least two of said bosses (66) being located on opposite sides of the central axis of said first sleeve body (62).

10. The pump of claim 1, wherein the pump comprises:

the heating assembly (4), the heating assembly (4) is connected with the pump shell (1), the heating assembly (4) comprises a heat conduction disc (41) and a heating element (42), the heat conduction disc (41) is fixed on the peripheral wall of the pump shell (1), and the heating element (42) is fixed on the outer end face of the heat conduction disc (41);

the motor (5) is at least partially arranged in the first inner cavity (620) of the first sleeve body and is used for driving water to flow into the pump cavity (11) from the water inlet (12) through the lining (6) and to be discharged through the water outlet (13);

the impeller (2), at least part of the impeller (2) is accommodated in the first inner cavity (620) of the first sleeve body and is connected with the motor (5);

bearing support (3), bearing support (3) are located between impeller (2) and motor (5), bearing support (3) with the bottom surface of the first cover body (62) of bush (6) is laminated mutually.

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