CN212140374U - Water pump structure of dish washing machine - Google Patents

Abstract

The utility model discloses a water pump structure of a dish washing machine, which comprises a water tank body, a motor, a water pump bracket and a rotary spray arm, wherein a rotating shaft of the motor extends into the water tank body, the rotating shaft is provided with an impeller, the rotary spray arm and/or the water pump bracket is provided with an accommodating cavity matched with the impeller, the upper end of the rotary spray arm is provided with a through hole corresponding to the rotating shaft of the motor, the upper end of the rotating shaft of the motor is provided with a stop part, and the stop part is detachably connected with the rotating shaft of the motor; when the stopping component is installed, the rotary spray arm is limited to rotate between the stopping component and the water pump bracket, and when the stopping component is removed, the rotary spray arm can be removed from the upper end of the rotating shaft of the motor. The utility model discloses simple structure easy dismouting can also make parts such as impeller and water pump support can both demolish the washing under the condition that need not be with the help of any instrument on the basis of this structure, and the user of being convenient for keeps dish washer water route system's clean in long-term the use, makes this open water pump really realize wasing no dead angle.

Description

Water pump structure of dish washing machine

Technical Field

The utility model belongs to the technical field of dish washer, concretely relates to dish washer water pump structure.

Background

The dish washer is an electric appliance for daily use for washing dishes, and comprises a water tank body and a water pump assembly, wherein washing water is firstly injected into the water tank body, and then the washing water is circularly pumped in the water tank body by utilizing a water pump system so as to spray and wash the dishes placed in the water tank body. The water pump assembly can be divided into an open type water pump and a closed type water pump according to different positions of the pump body, the pump body of the open type water pump is arranged inside the water tank body, namely, a water inlet of the pump body is arranged in the water tank body, for example, a dish washing machine disclosed in European patent publication No. EP0807396A2 is adopted, and the existing open type water pump dish washing machine is difficult to disassemble and clean due to the fact that a pump shell of the existing open type water pump dish washing machine is fixedly connected with the water tank body.

Disclosure of Invention

To the not enough of above-mentioned prior art existence, the utility model aims at providing a dish washer water pump structure, its simple structure easy dismouting, the water pump assembly's of being convenient for demolish cleanly.

In order to achieve the above purpose, the utility model adopts the technical scheme that.

A water pump structure of a dish washing machine comprises a water tank body, wherein a motor is arranged below the water tank body, a water pump support is arranged in the water tank body, a rotary spray arm is loaded at the upper end of the water pump support, a rotary shaft of the motor extends into the water tank body, an impeller is arranged on the rotary shaft, the rotary spray arm and/or the water pump support are/is provided with an accommodating cavity matched with the impeller, the water pump support is provided with a water inlet communicated with the accommodating cavity, the rotary spray arm is provided with a nozzle communicated with the accommodating cavity, the upper end of the rotary spray arm is provided with a through hole corresponding to the rotary shaft of the motor, a stop part is arranged at the upper end of the rotary shaft; when the stopping component is connected with the rotating shaft of the motor, the rotary spraying arm rotates between the stopping component and the water pump bracket in a limiting mode, and when the stopping component is detached from the rotating shaft of the motor, the rotary spraying arm can be detached from the upper end of the rotating shaft of the motor.

Preferably, the stopping part is a top cover, the top cover is provided with a bolt, and a rotating shaft of the motor is provided with a pin hole matched with the bolt. Or, the stop part is a gland which is provided with an elastic hook, and the rotating shaft of the motor is provided with a clamping groove matched with the elastic hook.

Furthermore, the impeller is movably sleeved on the rotating shaft of the motor, and the impeller rotates synchronously along with the rotating shaft of the motor. Preferably, the impeller comprises an upper impeller arranged in the accommodating cavity of the rotary spray arm and a lower impeller arranged in the accommodating cavity of the water pump bracket, and the upper impeller and the lower impeller are integrally formed or are connected into a whole in a split mode.

Further, the bottom of basin body is fixed and is provided with the mounting panel, and the circumference of mounting panel is provided with a plurality of first fixture blocks, and the circumference of water pump support is provided with the first bayonet socket of a plurality of first fixture block complex. Preferably, the first clamping block is provided with a limiting column, the first bayonet is provided with an elastic arm, and the elastic arm is provided with a limiting groove matched with the limiting column in a limiting mode.

Further, still including setting up the filter screen in basin body bottom, the middle part of filter screen passes through filter screen support and sets up on water pump support, and water pump support's circumference is provided with a plurality of second fixture blocks, and filter screen support's circumference is provided with the second bayonet socket with a plurality of second fixture block complex. Preferably, the filter screen is provided with the first mounting hole with filter screen support complex, and the filter screen is provided with first breach along the circumference of this first mounting hole, and filter screen support's circumference is provided with and buckles with this first breach complex bullet, filter screen support still be provided with the corresponding spacing step of bullet knot, when filter screen support installs in the first mounting hole of filter screen, the filter screen clamp is arranged in between filter screen support's bullet knot and the spacing step.

Preferably, the upper end of the impeller is provided with a flow guide surface corresponding to the through hole of the rotary spray arm.

Preferably, still including setting up the rubbish basket subassembly in the basin body, the rubbish basket subassembly includes rubbish basket main part and rubbish basket connecting block, the bottom fixed connection of rubbish basket connecting block and basin body, the circumference of rubbish basket connecting block is provided with a plurality of third fixture blocks, the circumference of rubbish basket main part be provided with a plurality of third fixture block complex third bayonet socket.

Further, a filter screen is arranged in the water tank body and above the garbage basket connecting block, the filter screen is provided with a second mounting hole, and the garbage basket body is mounted in the second mounting hole of the filter screen through a garbage basket support; the rubbish basket support is equipped with second mounting hole complex flange, and the filter screen is provided with the second breach along the circumference of this second mounting hole, and rubbish basket support is located the below of flange is equipped with can stretch into the lug of second breach, when rubbish basket support mounting in the filter screen, the position clamp that the filter screen is located the second mounting hole is arranged in between the flange and the lug of rubbish basket support.

After the technical scheme is adopted, compared with the prior art, the utility model the advantage that has is.

The utility model discloses the pivot upper end of motor is provided with the backstop part, and this backstop part can be dismantled with the pivot of motor and be connected, therefore works as when the backstop part is connected with the pivot of motor, rotatory spray arm spacing rotation between backstop part and water pump support, when demolising in the pivot from the motor during the backstop part, rotatory spray arm can follow the pivot upper end of motor and demolish. This backstop part sets up in the upper end of rotatory spray arm, compares with the spinner structure of current setting at rotatory spray arm lower extreme, the utility model discloses a structure is simpler, and changes the dismouting, and the water pump assembly of being convenient for demolish cleanly. Furthermore, on the basis of the structure that the stop component is arranged at the upper end of the rotating shaft of the motor, components such as an impeller, a water pump bracket and the like which form the water pump assembly can be detached and cleaned without any tool, so that a user can keep a water path system clean when the water pump is used for a long time, and the open type water pump really realizes no dead angle in cleaning.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the assembly structure of the present invention.

Fig. 2 is an exploded schematic view of the present invention.

Fig. 3 is a schematic structural view of one embodiment of the stopper member of the present invention.

Fig. 4 is a schematic structural view of a second embodiment of the stopper member of the present invention.

Fig. 5 is a schematic structural view of a third embodiment of the stopper member of the present invention.

Fig. 6 is a schematic structural view of the connection between the impeller and the rotating shaft of the motor according to the present invention.

Fig. 7 is a schematic structural view of the impeller of the present invention.

Fig. 8 is a schematic structural diagram of the top cover of the present invention.

Fig. 9 is an exploded view of the pump body according to the present invention.

Fig. 10 is a schematic structural view of the connection between the water pump bracket and the mounting plate of the present invention.

Fig. 11 is the structure diagram of the connection between the filter screen bracket and the water pump bracket of the present invention.

Fig. 12 is an exploded view of the garbage basket assembly of the present invention.

Fig. 13 is a schematic cross-sectional view of a garbage basket assembly according to the present invention.

In the figure, 1, a sink body, 11, a water outlet, 2, a motor, 21, a rotating shaft, 211, a lock hole, 212, a pin hole, 213, a clamping groove, 214, a notch, 3, a water pump bracket, 31, a water inlet, 32, a first clamping opening, 33, a second clamping block, 4, a rotary spray arm, 41, a nozzle, 42, a through hole, 421, a positioning groove, 5, an impeller, 51, a shaft hole, 52, an upper impeller, 53, a lower impeller, 54, a flow guide surface, 6, a stop component, 61, a locking pin, 62, a top cover, 621, a jack, 622, a mounting groove, 63, a bolt, 631, an elastic arm, 64, a pressing cover, 641, an elastic clamping hook, 642, a hole groove, 7, a mounting plate, 71, a first clamping block, a limiting column, 8, a filter screen, 81, a first mounting hole, 82, a second mounting hole, 821, a second notch, 9, a garbage filter screen bracket, 91, a second clamping opening, 92, a limiting step, 93, a spring buckle, 101. the garbage basket comprises a garbage basket body, 1011. a third bayonet, 102. a garbage basket connecting block, 1021. a third clamping block, 103. a garbage basket bracket, 1031. a flange, 1032. a lug.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.

Referring to fig. 1 and 2, a water pump structure of a dish washer comprises a water tank body 1, the water tank body 1 may be a water tank body 1 of a water tank type dish washer, a cabinet type dish washer or other dish washers, the present embodiment is described by using the water tank body 1 of the water tank type dish washer, for convenience of clear illustration, only a bottom part of the water tank body 1 is illustrated in the figure, a motor 2 is disposed below the water tank body 1, specifically, the motor is disposed below a bottom plate of the water tank body 1, a water pump bracket 3 is disposed in the water tank body 1, a rotary spray arm 4 is supported at an upper end of the water pump bracket 3, generally, the rotary spray arm 4 is formed by joining an upper half shell and a lower half shell, a circular hole is disposed at a lower end of the rotary spray arm 4, a fixing ring concentrically and rotatably matched with an upper part of the water pump bracket 3 extends downwards along a periphery of the circular hole, the rotating shaft 21 is provided with an impeller 5, and the rotary spray arm 4 and/or the water pump bracket 3 are/is provided with a containing cavity matched with the impeller 5, in the embodiment, the rotary spray arm 4 and the water pump bracket 3 are both provided with a containing cavity, and the containing cavities essentially form a pump shell matched with the impeller 5, and the specific structure of the pump shell is explained in detail below. Of course, the water pump structure may be a self-priming water pump structure, which can be seen from the dishwasher disclosed in US patent No. US3645453, in which the receiving cavity matched with the impeller 5 is provided in the rotary spray arm 4, and the water flow channel communicated with the receiving cavity is provided in the water pump bracket 3; alternatively, the water pump may be provided with only the receiving cavity in the water pump bracket 3, which is engaged with the impeller 5, and the rotating spray arm 4 may be provided with a water flow passage communicated with the receiving cavity, and the water pump structure is actually a pumping type water pump structure, which can be seen from the dishwasher disclosed in US 1485796.

The water pump bracket 3 is provided with a water inlet 31 communicated with the containing cavity, in the embodiment, the water inlet 31 is arranged on the peripheral wall of the water pump bracket 3, the water pump bracket 3 can be integrally formed or combined into a whole by a plurality of components, a vertical channel for the rotating shaft 21 of the power supply machine 2 to pass through is formed in the water pump bracket 3, the vertical channel is communicated with a round hole at the lower end of the rotary spray arm 4, the rotary spray arm 4 is provided with a nozzle 41 communicated with the containing cavity, and the nozzle 41 is arranged on the shell of the rotary spray arm 4. the working principle of the utility model is that firstly, cleaning water is injected into the water tank body 1, so that the static water level of the cleaning water in the water tank body 1 is at least not too high as the water inlet 31 of the water pump bracket 3, the motor 2 drives the rotating shaft 21 to rotate, the rotating shaft 21 drives the impeller 5 to rotate in the containing cavity, thereby, the cleaning water in the rotary spray arm 4 is sprayed out from the nozzle 41 under the action of static pressure, the nozzle 41 can also be arranged at a certain angle, the nozzle 41 can make the rotary spray arm 4 bear the reaction force and rotate on the water pump bracket 3 while spraying out the cleaning water, so that the cleaning water sprayed out from the nozzle 41 of the rotary spray arm 4 can cover all areas in the water tank body 1, and finally the cleaning water sprayed out from the nozzle 41 falls back to the bottom of the water tank body 1 and flows to the position of the water inlet 31 of the water pump bracket 3, thereby realizing the circular spraying of the cleaning water.

The utility model discloses a substantive characteristics lie in, the upper end of rotatory spray arm 4 is provided with the through-hole 42 corresponding with the pivot 21 of motor 2, here the through-hole 42 corresponding with the pivot 21 of motor 2 mean that, this through-hole 42 can be passed to the pivot 21 upper end of motor 2, perhaps the pivot 21 of motor 2 is located the below of this through-hole 42. The upper end of the rotating shaft 21 of the motor 2 is provided with a stop part 6, and the stop part 6 is detachably connected with the rotating shaft 21 of the motor 2; it should be noted that the stopping member 6 is a structural description of a generic concept, and has a function of being detachably connected to the rotating shaft 21 of the motor 2 and limiting the rotation of the spraying arm 4 in the height direction, specifically, when the stopping member 6 is connected to the rotating shaft 21 of the motor 2, the spraying arm 4 limits the rotation between the stopping member 6 and the water pump bracket 3, and when the stopping member 6 is removed from the rotating shaft 21 of the motor 2, the spraying arm 4 can be removed from the upper end of the rotating shaft 21 of the motor 2. The utility model discloses an advance lies in, compares with the spinner structure of current setting at rotatory spray arm lower extreme, the utility model discloses a backstop part 6 sets up in the upper end of rotatory spray arm 4, removes backstop part 6 and rotatory spray arm 4 in proper order from the upper end of rotatory spray arm 4, and its structure is simpler, and changes the dismouting, and the water pump assembly of being convenient for demolish cleanly. Furthermore, on the basis of the structure that the stop component 6 is arranged at the upper end of the rotating shaft 21 of the motor 2, the components such as the impeller 5 and the water pump bracket 3 which form the water pump assembly can be completely assembled and disassembled more easily, and the details are explained in detail below.

As an embodiment of the stop member, referring to fig. 3, the stop member 6 may be a lock pin 61, and of course, may also be a lock block structure, the upper end of the rotating shaft 21 of the motor 2 passes through the through hole 42 of the rotating spray arm 4, and a lock hole 211 into which the lock pin 61 is inserted is transversely provided at the upper end of the rotating shaft 21 of the motor 2, when the spray arm 4 is installed, the rotating spray arm 4 is first placed on the upper end surface of the water pump bracket 3, and the lock hole 211 at the upper end of the rotating shaft 21 of the motor 2 is exposed at the upper end of the rotating spray arm 4, then the lock pin 61 is inserted into the lock hole 211, the length of the lock pin 61 is greater than the diameter of the through hole 42 at the upper end of the rotating spray arm 4, the rotating spray arm 4 can be limited between the lock pin 61 and the water pump housing 3, and the lock pin 61 can be set to be a C-. It should be noted that, although the structure of the lock pin 61 as the stopper 6 is simple, part of the washing water falling back from the inside of the tub body 1 will flow from the through hole 42 at the upper end of the rotary spray arm 4 to the flow passage of the rotary spray arm 4, and this part of the washing water is not filtered by the filter screen (see the following detailed description), so the stopper 6 of the lock pin 61 can realize the basic function of the present invention convenient for disassembly and assembly, but is insufficient in the aspect of the cleaning performance of the dishwasher, and the present invention also provides two other preferred embodiments of the stopper 6 for this problem.

In a preferred mode, referring to fig. 1 and 4, the stopping member 6 is a top cover 62, the top cover 62 is provided with a bolt 63, and the rotating shaft 21 of the motor 2 is provided with a pin hole 212 matched with the bolt 63. The top cover 62 is circular and entirely covers the through hole 42 at the upper end of the rotary spray arm 4, so that the washing water falling back from the inside of the tub body 1 is prevented from flowing into the flow passage of the rotary spray arm 4 through the through hole 42. Specifically, the top cover 62 has an annular step surface, the peripheral wall of the top cover 62 above the annular step surface is provided with an insertion hole 621 for the insertion pin 63 to pass through, and the insertion pin 63 is sequentially inserted into the insertion hole 621 and the pin hole 212 at the upper end of the rotating shaft 21 of the motor 2, so that the top cover 62 and the rotating shaft 21 of the motor 2 are fixedly connected into a whole. In order to prevent the latch 63 from falling off accidentally, the latch 63 may also be configured as a C-shaped or annular elastic latch, and this embodiment is described by taking the C-shaped elastic latch 63 as an example, that is, a C-shaped elastic arm 631 matching with the peripheral wall of the top cover 62 extends at one end of the latch 63, and after the latch 63 is inserted into the insertion hole 621 of the top cover 62 and the pin hole 212 of the rotating shaft 21, the latch 63 is rotated to make the C-shaped elastic arm 631 snap into the peripheral wall side of the top cover 62, so as to ensure the safe and reliable operation of the rotary spray arm 4. The annular bolt is that one end of the bolt is rotatably connected with a snap ring matched with the peripheral wall of the top cover. When the top cover 62 needs to be removed, the bolt 63 is pulled out, the top cover 62 can be taken out upwards, the rotary spray arm 4 can be further taken out upwards, and after the top cover 62 is mounted, the rotary spray arm 4 is limited between the step surface of the top cover 62 and the water pump bracket 3. In order to facilitate the insertion hole 621 of the top cover 62 to align with the pin hole 212 of the rotating shaft 21 of the motor 2, a positioning groove 421 matching with the top cover 62 may be disposed at the upper end of the rotary spray arm 4, the positioning groove 421 is disposed concentrically with the rotating shaft 21 of the motor 2, and the insertion hole 621 of the top cover 62 may be quickly aligned with the pin hole 212 of the rotating shaft 21 of the motor 2 by disposing the top cover 62 in the positioning groove 421 and rotating along the positioning groove 421, so that the plug pin 63 may be inserted into the pin hole 212 of the rotating shaft 21 of the motor 2; or, a positioning block passing through the through hole 42 at the upper end of the rotary spray arm 4 is arranged at the upper end of the impeller 5, the periphery of the positioning block is matched with the inner wall of the top cover 62, the positioning block can ensure that the top cover 62 is aligned with the center of the rotating shaft 21, and the positioning block can also be in positioning fit with the through hole 42 at the upper end of the rotary spray arm 4 to ensure that the rotary spray arm 4 can rotate stably on the water pump bracket 3.

Alternatively, referring to fig. 5, the stopping member 6 is a pressing cover 64, the pressing cover 64 is provided with an elastic hook 641, and the rotating shaft 21 of the motor 2 is provided with a clamping groove 213 engaged with the elastic hook 641. Similarly, the cover 64 is also provided as a circular cover 64 integrally covering the through hole 42 at the upper end of the rotary spray arm 4 so as to prevent the washing water falling back in the tub body 1 from flowing into the flow path of the rotary spray arm 4 through the through hole 42 of the rotary spray arm 4. The center of the pressing cover 64 is vertically extended downwards with a plurality of cylindrical elastic hooks 641, the center of the cylindrical elastic hooks 641 is provided with a hole 642 into which the rotating shaft 21 of the motor 2 extends, the hole 642 of the pressing cover 64 is aligned with the rotating shaft 21 of the motor 2 during installation, the pressing cover 64 is pressed downwards to enable the elastic hooks 641 of the pressing cover 64 to be clamped into the clamping grooves 213 of the rotating shaft 21 of the motor 2 under the action of elastic force, the installation structure of the pressing cover 64 does not need the rotating shaft 21 of the motor 2 to penetrate through the through hole 42 of the rotary spraying arm 4, the elastic hooks 641 of the pressing cover 64 are matched with the clamping grooves 213 of the rotating shaft 21 of the motor 2 to prevent the pressing cover 64 from falling off accidentally, and the pressing cover 64 is lifted upwards by force during disassembly to enable the elastic hooks 641 of the pressing cover 64 to generate elastic deformation to be separated from. An equivalent alternative of this embodiment is to provide a hole slot on the upper end of the rotating shaft 213 of the motor 2 to match with a plurality of cylindrical elastic hooks 641, and the elastic hooks 641 of the gland 64 extend into the empty slot of the rotating shaft 21 of the motor 2 to be engaged with the slots 213 of the rotating shaft 21.

In addition, the stopping member 6 may also be a screw cap (not shown), which is screwed to the upper end of the rotating shaft 21 of the motor 2, i.e. a screw connection portion screwed to the screw cap is provided at the upper end of the rotating shaft 21 of the motor 2. It should be noted that, this kind of spiral cover structure is applicable to the motor 2 that has self-locking mechanism, and motor 2 is in the auto-lock state during dismouting, therefore can be through rotatory mode with spiral cover and motor 2's pivot 21 fixed connection or dismantlement.

The utility model discloses because set up backstop part 6 in motor 2's pivot 21 upper end, can also make parts such as impeller and the water pump support that constitute water pump assembly on the basis of this structure can both demolish the washing under the condition that need not be with the help of any instrument, and the user of being convenient for keeps waterway system's clean in the machine uses for a long time, makes this open water pump really realize wasing no dead angle, further detailed description below.

Referring to fig. 2, 6 and 7, the impeller 5 is movably sleeved on the rotating shaft 21 of the motor 2, and the impeller 5 rotates synchronously with the rotating shaft 21 of the motor 2, specifically, a straight cut 214 may be disposed on the rotating shaft 21 of the motor 2, and a shaft hole 51 matched with the rotating shaft 21 having the cut 214 is disposed in the center of the impeller 5, so that the impeller 5 can be slidably sleeved on the rotating shaft 21 of the motor 2 and can rotate synchronously with the rotating shaft 21 of the motor 2. In the above embodiment of the top cover 62, referring to fig. 8, in order to ensure that the top cover 62 can rotate synchronously with the rotating shaft 21 of the motor 2, a mounting groove 622 matching with the notch 214 of the rotating shaft 21 of the motor 2 may be provided in the middle of the top cover 62, and the upper end of the rotating shaft 21 of the motor 2 is inserted into the mounting groove 622 having the notch shape, which may also be adopted in the hole groove of the gland in the above embodiment of the gland. The lower end of the impeller 5 abuts against the lower end of the notch 214 of the rotating shaft 21 of the motor 2 to limit the lowest position of the impeller 5 on the rotating shaft 21 of the motor 2, the upper end of the impeller 5 abuts against the rotary spray arm 4 or the stop part 6 to limit the highest position of the impeller 5 on the rotating shaft 21 of the motor 2, or the impeller 5 can be fixedly arranged on the rotating shaft 21 of the motor 2 through other detachably connected structures. Because the impeller 5 is movably sleeved on the rotating shaft 21 of the motor 2, the impeller 5 can be detached from the upper end of the rotating shaft 21 of the motor 2 after the stopping component 6 and the rotary spray arm 4 are detached.

Preferably, referring to fig. 2 and 9, the impeller 5 includes an upper impeller 52 disposed in the receiving cavity of the rotary spray arm 4 and a lower impeller 53 disposed in the receiving cavity of the water pump bracket 3, and the upper impeller 52 and the lower impeller 53 are integrally formed or separately connected. In this embodiment, the upper impeller 52 and the lower impeller 53 are separately arranged, the lower end of the upper impeller 52 is inserted into the upper end of the lower impeller 53, centrifugal blades are circumferentially arranged on the upper impeller 52, the accommodating cavity of the rotary spray arm 4 is matched with the upper impeller 52 to form a centrifugal pump, axial flow blades are circumferentially arranged on the lower impeller, the accommodating cavity of the water pump bracket 3 is matched with the lower impeller 53 to form an axial flow pump, when the rotating shaft 21 of the motor 2 drives the impeller 5 to rotate, the lower impeller 53 axially lifts cleaning water below the water pump bracket 3 to the accommodating cavity of the rotary spray arm 4, and the upper impeller 52 presses the cleaning water in the accommodating cavity of the rotary spray arm 4 into the flow channels on both sides of the rotary spray arm 4.

Further, referring to fig. 2 and 10, a mounting plate 7 is fixedly arranged at the bottom of the sink body 1, a plurality of first clamping blocks 71 are arranged on the mounting plate 7 in the circumferential direction, and a first bayonet 32 matched with the plurality of first clamping blocks 71 is arranged on the water pump bracket 3 in the circumferential direction. In this embodiment, the mounting plate 7 is fixedly mounted on the bottom plate of the sink body 1 by screws, and the motor 2 is located below the bottom plate of the sink body 1 and is fixedly connected to the mounting plate 7 by screws. Three first clamping blocks 71 are circumferentially and equidistantly arranged on the circumference of the mounting plate 7, three first bayonets 32 in one-to-one correspondence with the three first clamping blocks 71 are arranged on the circumferential wall of the water pump bracket 3, and the water pump bracket 3 is rotatably clamped on the mounting plate 7 through the matching of the first bayonets 32 and the first clamping blocks 71 of the mounting plate 7. During installation, the three first bayonets 32 of the water pump bracket 3 are respectively aligned with the three first fixture blocks 71 of the mounting plate 7, then the water pump bracket 3 is rotated to enable the first bayonets 32 to be clamped with the first fixture blocks 71, and during disassembly, the water pump bracket 3 is reversely rotated to enable the water pump bracket 3 to be separated from the mounting plate 7, so that after the stopping component 6, the rotary spray arm 4 and the impeller 5 are disassembled, the water pump bracket 3 can be disassembled from the water tank body 1.

Preferably, the first latch 71 is provided with a limiting column 711, and the first bayonet 32 is provided with an elastic arm, and the elastic arm is provided with a limiting groove 321 which is in limiting fit with the limiting column 711. When the first latch 71 and the first bayonet 32 are engaged in place, the limiting post 711 of the first latch 71 is engaged in the limiting groove 321 of the elastic arm to prevent the water pump bracket 3 from being accidentally disengaged from the engagement of the mounting plate 7.

Further, see fig. 2 and 11, still including setting up the filter screen 8 in basin body 1 bottom, form the waterlogging caused by excessive rainfall region between the bottom plate of filter screen 8 and basin body 1, wash water that falls back in the basin body 1 enters into the waterlogging caused by excessive rainfall region after filter screen 8 filters in, filter screen in current dish washer basin body is convenient for demolish, directly place the filter screen on the water pump bracket usually, this kind of structure can make the filter screen produce the disturbance easily, thereby make wash the residue along the linking department between filter screen and the water pump bracket flow into in the waterlogging caused by excessive rainfall region, the filter screen is difficult to effectively filter the washing residue promptly, can cause the influence to dish washer's cleaning performance. To this problem, the utility model discloses a filter screen support 9 is passed through at filter screen 8's middle part and is set up on water pump bracket 3, and water pump bracket 3's circumference is provided with a plurality of second fixture blocks 33, and filter screen support 9's circumference is provided with a plurality of second fixture blocks 33 complex second bayonet 91. Specifically, the filter screen bracket 9 is fixedly arranged on the filter screen 8, three second fixture blocks 33 which are circumferentially arranged at equal intervals are arranged on the outer side of the peripheral wall of the water pump bracket 3, connecting walls which correspond to the three second fixture blocks 33 one to one are vertically extended on the inner wall of the filter screen bracket 9, and a second bayonet 91 which is clamped with the second fixture block 33 is arranged on each connecting wall. In order to prevent the filter screen bracket 9 from accidentally separating from the water pump bracket 3, the second clamping block 33 and the second clamping opening 91 are also provided with limiting structures of limiting columns and limiting grooves. Because filter screen 8 passes through filter screen support 9 and fixes the setting on water pump support 3, therefore can avoid the series of problems that filter screen 8 disturbance caused, filter screen 8 also is through buckle structure block in water pump support 3 in addition, therefore filter screen 8 not only can be along with water pump support 3 dismantles from basin body 1, can also follow water pump support 3 and demolish.

Preferably, the filter screen 8 is provided with a first mounting hole 81 matched with the filter screen support 9, the filter screen 8 is provided with a first notch along the circumferential direction of the first mounting hole 81, the filter screen support 9 is provided with a snap fastener 93 matched with the first notch along the circumferential direction, in this embodiment, the snap fastener 93 is arranged on the connecting wall of the filter screen support 9, the filter screen 8 is provided with first notches corresponding to the snap fasteners 93 one by one along the circumferential direction of the first mounting hole 81, the filter screen support 9 is further provided with a limiting step 92 corresponding to the snap fastener 93, when the filter screen support 9 is mounted in the first mounting hole 81 of the filter screen 8, the filter screen support 9 is pressed towards the first mounting hole 82 of the filter screen 8, so that the filter screen 8 can be clamped between the snap fastener 93 and the limiting step 92 of the filter screen support 9, the filter screen support 9 can rotate along the first mounting hole 81 of the filter screen 8, when the snap fastener 93 of the filter screen support 9 rotates to the first notch of the first mounting hole 81 of the filter screen 8, the screen support 9 can be separated from the screen 8.

Preferably, referring to fig. 2 and 9, the upper end of the impeller 5 is provided with a flow guide surface 54 corresponding to the through hole 42 of the rotary spray arm 4, when the water pump of the conventional dishwasher is operated, a negative pressure region is formed between the upper end surface of the spray arm and the flow guide surface at the upper end of the impeller, and the negative pressure region can weaken the static pressure of the washing water pressed into both sides of the rotary spray arm, thereby affecting the height and strength of the water flow sprayed by the nozzle, because the through hole 42 is formed at the position of the upper end surface of the rotary spray arm 4 corresponding to the flow guide surface 54 at the upper end of the impeller 5, the through hole 42 conducts the outside of the rotary spray arm 4 with the negative pressure region, so that the static pressure of the washing water pressed into the rotary spray arm 4 by the impeller 5 can be enhanced, and the. In this embodiment, the cross section of the flow guiding surface 54 on the upper end surface of the impeller 4 is arc-shaped, and the outer edge of the flow guiding surface 54 extends to the outer end of the blade of the impeller 5, the flow guiding surface 54 guides the cleaning water entering the accommodating cavity of the rotary spray arm 4 from the water pump bracket 3 to enable the cleaning water to be pressed into the flow channels on both sides of the rotary spray arm 4 from the vertical direction to the lateral direction along the flow guiding surface 54, and the outer end of the blade of the impeller 5 is provided with a bending section along the rotation direction of the impeller 5 to match with the axial flow blade arranged on the lower section of the impeller 5.

Further, the garbage basket of the existing dishwasher is inconvenient to disassemble and assemble and has the problems that the disassembling and assembling structure is easy to loosen, so that food residues cannot be effectively filtered, and the like, referring to fig. 2 and fig. 12-13, the present invention further comprises a garbage basket assembly 10 which is easy to disassemble and assemble and is stably connected in the sink body 1, specifically, the garbage basket assembly 10 comprises a garbage basket main body 101 and a garbage basket connecting block 102, the garbage basket connecting block 102 is fixedly connected with the bottom of the sink body 1, for example, the garbage basket connecting block 102 is welded and fixed with the bottom plate of the sink body 1, in this embodiment, the garbage basket connecting block 102 is in a circular ring shape, two third clamping blocks 1021 are arranged in the circumferential direction, a third clamping opening 1011 which is matched with the two third clamping blocks 1021 is arranged in the circumferential direction of the garbage basket main body 101, and the third clamping block 1021 of the garbage basket connecting block 102 are matched in a clamping manner through the third clamping opening 1011, so that the garbage basket main body 101 can be rotatably clamped, thereby realizing the detachable connection of the garbage basket main body 101 with respect to the sink body 1.

Preferably, the garbage basket main body 101 of the present embodiment is disposed on the filter screen 8, the filter screen 8 is located above the garbage basket connecting block 102, that is, the lower portion of the garbage basket main body 101 is located in a water draining area between the bottom plate of the sink body 1 and the filter screen 8, and a screen or a filter screen (not shown) is disposed at the position of the garbage basket main body 101, so that cleaning water falling back onto the filter screen 8 in the sink body 1 can enter the water draining area after being filtered by the garbage basket main body 101, and the garbage basket main body 101 can be disposed in a most concave portion of the filter screen 8 in order to quickly guide food residues on the filter screen 8 into the garbage basket main body 101.

The filter screen 8 is provided with a second mounting hole 82, and the garbage basket main body 101 is mounted in the second mounting hole 82 of the filter screen 8 through a garbage basket support 103; the garbage basket support 103 is provided with a flange 1031 matched with the second mounting hole 82, the filter screen 8 is provided with a second notch 821 along the circumference of the second mounting hole 82, the garbage basket support 103 is positioned below the flange 1031 and is provided with a lug 1032 capable of extending into the second notch 821, when the garbage basket support 103 is mounted on the filter screen 8, the part of the filter screen 8 positioned in the second mounting hole 821 is clamped between the flange 1031 and the lug 1032 of the garbage basket support 103, so that the flange 1031 of the garbage basket support 103 is attached to the periphery of the second mounting hole 821 of the filter screen 8, the garbage basket main body 101 is provided with an abutting surface matched with the flange 1031 of the garbage basket support 103, when the garbage basket main body 101 is rotationally clamped with the garbage basket connecting block 102, the abutting surface of the garbage basket main body 101 is tightly abutted to the upper end surface of the flange 1031 of the garbage basket support 103 by virtue of the elastic force generated by deformation of the filter screen 8, and the structure further fixes the filter screen 8 through the garbage basket assembly 10 on, prevent that filter screen 8 is undulant, on the other hand utilizes the elastic force that filter screen 8 deformation produced to make zonulae occludens between rubbish basket main part 101 and the rubbish basket support 103 again to solve the problem that food waste can not effectively be filtered that current dish washer rubbish basket easily becomes flexible to cause. It should be noted that the utility model discloses a filter screen 8 plays dual fixed action to filter screen 8 on being fixed in water pump bracket 3 through filter screen support 9 and being fixed in rubbish basket main part 101 through rubbish basket support 103.

Further, the lower end of the garbage basket support 103 extends into the garbage basket connecting block 102, the lower end of the garbage basket main body 101 extends into the garbage basket support 103, the garbage basket support 103 is abutted to the garbage basket connecting block 102, and the garbage basket main body 101, the garbage basket support 103 and the garbage basket connecting block 102 are connected into a whole in a concentric mode. In this embodiment, the drain port 11 of the sink body 1 is provided at the basket connecting block 102 below the basket body 101, which facilitates quick drainage of the washing water in the sink body 1. When the garbage basket assembly 10 is installed, the lug 1032 of the garbage basket support 103 is aligned with the second notch 821 of the filter screen 8, the garbage basket support 103 is pressed into the filter screen 8 and is rotated, so that the garbage basket support 103 is installed in the second installation hole 82 of the filter screen 8, the filter screen 8 is installed on the water pump support 3 of the water tank body 1 through the filter screen support 9, the garbage basket main body 101 is inserted into the garbage basket support 103, the upper portion of the garbage basket main body 101 is pressed onto the flange 1031 of the garbage basket support 103, the third clamping opening 1011 at the lower end of the garbage basket main body 101 is rotatably clamped with the third clamping block 1021 of the garbage basket connecting block 102, and when the garbage basket main body 101 is disassembled, the garbage basket main body 101 can be taken out from the garbage basket support 103 of the filter screen 8 by reversely rotating the garbage.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims (10)

1. A water pump structure of a dish washing machine comprises a water tank body (1), wherein a motor (2) is arranged below the water tank body (1), a water pump support (3) is arranged in the water tank body (1), a rotary spray arm (4) is loaded at the upper end of the water pump support (3), a rotary shaft (21) of the motor (2) extends into the water tank body (1), an impeller (5) is arranged on the rotary shaft (21), an accommodating cavity matched with the impeller (5) is formed in the rotary spray arm (4) and/or the water pump support (3), a water inlet (31) communicated with the accommodating cavity is formed in the water pump support (3), a nozzle (41) communicated with the accommodating cavity is formed in the rotary spray arm (4), the water pump structure is characterized in that a through hole (42) corresponding to the rotary shaft (21) of the motor (2) is formed in the upper end of the rotary spray arm (4), a stop part (6) is arranged at the upper end, the stop part (6) is detachably connected with a rotating shaft (21) of the motor (2); when the stopping component (6) is connected with the rotating shaft (21) of the motor (2), the rotary spray arm (4) rotates between the stopping component (6) and the water pump bracket (3) in a limiting mode, and when the stopping component (6) is detached from the rotating shaft (21) of the motor (2), the rotary spray arm (4) can be detached from the upper end of the rotating shaft (21) of the motor (2).

2. A water pump structure of a dishwasher in accordance with claim 1, characterized in that the stop member (6) comprises a top cover (62), the top cover (62) is provided with a latch (63), and the rotating shaft (21) of the motor (2) is provided with a pin hole (212) engaged with the latch (63).

3. The water pump structure of a dishwasher of claim 1, wherein the impeller (5) is movably sleeved on the rotating shaft (21) of the motor (2), and the impeller (5) rotates synchronously with the rotating shaft (21) of the motor (2).

4. The water pump structure of the dishwasher according to claim 1, wherein the bottom of the sink body (1) is fixedly provided with a mounting plate (7), the circumferential direction of the mounting plate (7) is provided with a plurality of first clamping blocks (71), and the circumferential direction of the water pump bracket (3) is provided with a first bayonet (32) matched with the plurality of first clamping blocks (71).

5. The structure of a water pump of a dishwasher as claimed in claim 4, wherein the first block (71) is provided with a limiting post (711), and the first bayonet (32) is provided with a resilient arm provided with a limiting groove (321) in limiting fit with the limiting post (711).

6. The water pump structure of the dishwasher of claim 1, further comprising a filter screen (8) disposed at the bottom of the tub body (1), wherein the middle of the filter screen (8) is disposed on the water pump bracket (3) through a filter screen bracket (9), a plurality of second clamping blocks (33) are disposed in the circumferential direction of the water pump bracket (3), and a second bayonet (91) engaged with the plurality of second clamping blocks (33) is disposed in the circumferential direction of the filter screen bracket (9).

7. A water pump structure of a dishwasher according to claim 6, characterized in that the strainer (8) is provided with a first mounting hole (81) cooperating with the strainer holder (9), the strainer (8) is provided with a first notch along the circumference of the first mounting hole (81), the strainer holder (9) is provided with a snap ring (93) cooperating with the first notch along the circumference, the strainer holder (9) is further provided with a limit step (92) corresponding to the snap ring (93), and when the strainer holder (9) is mounted in the first mounting hole (81) of the strainer (8), the strainer (8) is sandwiched between the snap ring (93) and the limit step (92) of the strainer holder (9).

8. A dishwasher pump construction according to claim 1, characterized in that the impeller (5) is provided at its upper end with a flow guide surface (54) corresponding to the through-hole (42) of the rotating spray arm (4).

9. The water pump structure of the dishwasher of claim 1, further comprising a garbage basket assembly (10) disposed in the water tank body (1), wherein the garbage basket assembly (10) comprises a garbage basket main body (101) and a garbage basket connecting block (102), the garbage basket connecting block (102) is fixedly connected to the bottom of the water tank body (1), a plurality of third clamping blocks (1021) are disposed in the circumferential direction of the garbage basket connecting block (102), and a third bayonet (1011) matched with the plurality of third clamping blocks (1021) is disposed in the circumferential direction of the garbage basket main body (101).

10. The water pump structure of the dishwasher of claim 9, wherein a strainer (8) is arranged in the sink body (1) above the basket connecting block (102), the strainer (8) is provided with a second mounting hole (82), and the basket body (101) is mounted to the second mounting hole (82) of the strainer (8) through a basket bracket (103); the garbage basket support (103) is provided with a flange (1031) matched with the second mounting hole (82), a second notch (821) is formed in the circumferential direction of the filter screen (8) along the second mounting hole (82), the garbage basket support (103) is located below the flange (1031), a lug (1032) capable of extending into the second notch (821) is arranged below the flange (1031), and when the garbage basket support (103) is mounted on the filter screen (8), the part, located in the second mounting hole (82), of the filter screen (8) is clamped between the flange (1031) and the lug (1032) of the garbage basket support (103).

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