CN208632826U - Drainpipe, draining pump and washing machine - Google Patents

Abstract

The utility model relates to washing machine technology field, a kind of drainpipe, draining pump and washing machine are disclosed.Draining pump includes the drainage cavity for accommodating impeller, the drainage cavity has water inlet and discharge outlet, draining valve block is actively provided in the discharge outlet, wherein, allow when the draining valve block has draining pump loaded displacement the draining opening state drained and draining pump semi-load allow to drain when draining with the reciprocating movement of return water when close when open state.When draining pump full load, the pressure drained upwards makes to drain valve block and flip up to be in draining opening state, when draining pump semi-load, water flows back downwards above the pressure and drainpipe that draining valve block is drained upwards by draining pump simultaneously pressure and slightly swung near an equilbrium position, the speed that water flows back in the speed and drainpipe that draining pump drains outward is reduced simultaneously, it is consistent water in draining pump substantially, eliminates the semi-load noise issued by the residual water that impeller pats different liquid levels.

Description

Drainpipe, draining pump and washing machine

Technical field

The utility model relates to washing machine technology fields, and in particular, to a kind of drainpipe, a kind of draining pump and one kind are washed Clothing machine.

Background technique

With the promotion of people's quality of the life, the popularity of washing machine is higher and higher, while the type and sample of washing machine Formula is also more and more.At the same time, requirement of the people to washing machine noise quality is also higher and higher, in this way, the vibration of washing machine Noise performance has become the important indicator of product quality.For example, most roller washing machine is all upper draining at present, wherein The draining pump of washing machine has fully loaded (liquid level is higher than the maximum height for draining pump blade in draining pump), semi-load (draining pump Middle liquid level be located at draining pump blade maximum height and minimum constructive height between) and zero load (liquid level is lower than in draining pump Drain the minimum constructive height of pump blade) three kinds of states.When draining pump is in fully loaded and zero load, noise very little can be ignored；But work as When draining pump is in semi-load, the water in draining pump can not be thoroughly discharged, and be always discharged to after certain altitude and be back to Draining pump, such drain pump impeller pat the residual water of different liquid levels, so that very big noise can be generated, and this noise is not Continuously, the similar sound puffed and blow, body-sensing is very poor, reduces the laundry experience of user.

In order to solve noise when semi-load, a solution, which is proposed, increases non-return valve block in draining pump water outlet, When draining, valve block is opened to drain, and after primary draining, non-return valve block is closed, if there is more residual water in drainpipe, Then these residual water will be overstock above check-valves, and very big downward pressure is generated to check-valves, so that when draining next time, The insufficient pressure that draining pump drains upwards is so that check-valves is opened, so that the water in washing machine can not be discharged in time；

Alternatively, another solution proposes and increases non-return valve block in draining pump water outlet, and in non-return valve block On open up multiple apertures, in this way, draining pump stop drain when, the overstocked water energy of check-valves on piece flows back to pump by aperture It is interior, it avoids the problem that being likely to occur in a solution, but it can also have the risk that can not be drained, specifically: because examining Consider the factors such as temperature rise, service life, energy consumption, the draining pump of washing machine can not be opened forever, generally there is a fixed start-stop ratio, After draining pump stops working, non-return valve block is closed, and the aperture that the water in drainpipe begins through check-valves on piece slowly flows back, Air then flows back into roller along draining pump water inlet in draining pump, but at this point, if roller starts to accelerate dehydration, drainpipe In water still flow back by aperture, but a large amount of water is produced in drum at this time, draining pump water inlet is shut, causes to drain Air can not return in roller in pumping, and will lead to roller undergarment and be not then exhausted from water, in this way, roller, draining pump and draining are tubular At a linker, the both ends liquid level of roller and drainpipe is equal, and draining pump is in bottom, and the inside is all air, leaf Wheel rotation can only agitation air, and cannot drain.

Utility model content

One purpose of the utility model is to provide a kind of draining pump, and the draining pump configuration is simple, can not only meet just Often draining, and when draining pump semi-load, water in draining pump can be made to be consistent substantially, to eliminate because of draining significantly The impeller of pump pats the semi-load noise that the residual water of different liquid levels is issued.

To achieve the goals above, the utility model provides a kind of draining pump, the drainage cavity including accommodating impeller, described Drainage cavity has water inlet and discharge outlet, is actively provided with draining valve block in the discharge outlet, wherein the draining valve block tool Allow to allow to drain when the draining opening state drained and the draining of draining pump semi-load when having draining pump loaded displacement past with return water Open state when being closed when multiple movable.

Through the above technical solutions, due to can actively be provided with draining valve block in discharge outlet, and drain valve block tool Reciprocating movement when draining opening state and draining pump semi-load when having draining pump to meet draining drain when closing open state (arrange Water valve plate open and when close when open and can realize in several ways, various ways will be described below in detail in this), this Sample, drain valve block open and when close when a kind of embodiment for opening in, when draining pump full load, the pressure drained upwards is very Greatly, the draining valve block can be made to flip up to maximum angle (close to 90 degree) and be in draining opening state, drainage channel is smooth It is logical, do not interfere flow；And when draining pump semi-load, then the draining valve block is drained by draining pump upwards simultaneously pressure and draining The pressure that water flows back downwards above pipe, the two pressure can make draining valve block slightly swing near an equilbrium position, make It must drain and close (half-open semi-closure) state when opening when valve block is in a kind of, can reduce what water in draining pump discharged simultaneously in this way The speed that water inwardly flows back in speed and drainpipe is consistent water in draining pump substantially, to eliminate because impeller is patted The semi-load noise that the residual water of different liquid levels is issued.

Further, the draining valve block also has the return water opening state for allowing return water when draining pump stops draining.

Further, draining valve block fold ground is arranged in the discharge outlet.

Further, one end of the draining valve block is connected on the wall of the discharge outlet and can turn down return, In, when draining pump loaded displacement, the draining valve block can be under the effect of loaded displacement pressure towards the outside of the discharge outlet Fold is in draining opening state；When draining pump semi-load drain, the draining valve block can be in semi-load discharge pressure and return water Pressure act on lower reciprocally swinging in when close when open state；When draining pump stops draining, the draining valve block can be in return water Towards the fold of the inside of the discharge outlet to be in return water opening state under pressure effect.

Further, the draining valve block is elastic piece.

Further, the ratio of the cross-sectional area of the area and discharge outlet of the draining valve block is 0.7- 0.99。

Further, the ratio is 0.9-0.95.

Another purpose of the utility model is to provide a kind of drainpipe, and the drain structure is simple, is being connected to draining After the discharge outlet of pump, draining pump proper drainage can not only be met, and when draining pump semi-load, water in draining pump can be made Substantially it is consistent, makes an uproar to eliminate the semi-load issued by the residual water that the impeller of draining pump pats different liquid levels significantly Sound.

To achieve the goals above, the utility model provides a kind of drainpipe, which includes having drainage channel Tube body and draining valve block, one end of the drainage channel is formed for connection to the drainage inlet of the discharge outlet of draining pump, institute The other end for stating drainage channel is formed as drain outlet, and the draining valve block can be movably arranged as in the drainage channel, Wherein, when the draining opening state and draining pump semi-load for allowing to drain when the draining valve block has draining pump loaded displacement drain Allow to drain and when open state when closing of the reciprocating movement of return water.

Through the above technical solutions, due to can actively be provided with draining valve block in drainage channel, and drain valve block With draining pump meet drain when draining opening state and draining pump semi-load draining when reciprocating movement when close when open state (draining valve block open and when close when open and can realize in several ways, various ways will be described below in detail in this), In this way, after the discharge outlet that the drainpipe is connected to the draining pump of washing machine, drain valve block open and when close when one kind for opening In embodiment, when draining pump full load, the pressure drained upwards is very big, and the draining valve block can be made to flip up to maximum angular It spends (close to 90 degree) and is in draining opening state, drainage channel is unimpeded, does not interfere flow；And when draining pump semi-load, then should The pressure that water flows back downwards above the pressure and drainpipe that draining valve block is drained upwards by draining pump simultaneously, the two pressure meeting So that draining valve block is slightly swung near an equilbrium position, so that draining valve block closes (half-open semi-closure) when opening when being in a kind of State can reduce the speed that water inwardly flows back in the speed and drainpipe that water in draining pump discharges simultaneously in this way, make to arrange Water is consistent substantially in water pump, to eliminate the semi-load noise issued by the residual water that impeller pats different liquid levels.

Further, the draining valve block also has the return water opening state for allowing return water when draining pump stops draining.

Further, draining valve block fold ground is arranged in the drainage channel.

Further, one end of the draining valve block is connected on the wall of the drainage channel and can turn down return, Wherein, when draining pump loaded displacement, the draining valve block can be turned under the effect of loaded displacement pressure towards the drain outlet Folding is in draining opening state；When draining pump semi-load drain, the draining valve block can be in semi-load discharge pressure and return water pressure Power act on lower reciprocally swinging in when close when open state；When draining pump stops draining, the draining valve block can be in return water pressure It turns down under power effect towards the drainage inlet to be in return water opening state.

Further, the draining valve block is elastic piece.

In addition, the drain valve on piece is formed with water-guiding hole.

In addition, the ratio of the cross-sectional area of the area and drainage channel of the draining valve block is 0.7-0.99.

Further, the ratio is 0.9-0.95.

In addition, the utility model provides a kind of draining pump, which includes the drainage cavity for accommodating impeller, the draining Chamber has water inlet and discharge outlet, wherein the drainage inlet of drainpipe described in any of the above is connected with the discharge outlet.

In this way, as described above, in the draining pump semi-load, the draining valve block in drainpipe closes when opening when being in a kind of (half-open semi-closure) state can reduce what water in the speed and drainpipe that water in draining pump discharges inwardly flowed back simultaneously in this way Speed is consistent water in draining pump substantially, thus what elimination was issued by the residual water that impeller pats different liquid levels Semi-load noise.Further, after the draining pump is applied on washing machine, the overall quality of washing machine can be promoted significantly.

Further, in one embodiment, above-mentioned drain valve can be directly set in the discharge ends of draining pump Piece, i.e., the wall of the described drainage inlet and the wall of the discharge outlet are integrally formed, so that the drainpipe is directly as the draining The discharge ends for being connect with external pipe of pump.

The utility model also provides a kind of draining pump, which includes the drainage cavity for accommodating impeller, the drainage cavity With water inlet and discharge outlet, wherein the drainage inlet of above-described drainpipe is connected with the discharge outlet.

Finally, the utility model provides a kind of washing machine, any of the above institute is provided in the drainage flow path of the washing machine Draining pump in the drainage flow path of the draining pump or the washing machine stated is connected with above-described drainpipe.As described above , the overall quality of the washing machine is significantly improved.

Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.

Detailed description of the invention

Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:

Fig. 1 is a kind of easy structure schematic diagram for washing machine that specific embodiment of the present invention provides, wherein draining Pump is in light condition；

Fig. 2 is in the washing machine in Fig. 1, and draining pump is in the schematic diagram of full load condition；

Fig. 3 is in the washing machine in Fig. 1, and draining pump is in the schematic diagram of half cargo condition；

Fig. 4 is a kind of end view structural schematic diagram for drainpipe that specific embodiment of the present invention provides.

Description of symbols

1- drainage channel, 2- tube body, 3- drain valve block, 4- drainage inlet, 5- drain outlet, 6- impeller, 7- drainage cavity, 8- Water inlet, 9- discharge outlet, 10- draining pump, 11- extend radially out portion, 12- construction opening, the axially mounted protrusion of 13-.

Specific embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.

With reference to Fig. 1, Fig. 2 and structure shown in Fig. 3, draining pump provided by the utility model includes the row for accommodating impeller 6 Water cavity 7, drainage cavity 7 have water inlet 8 and discharge outlet 9, draining valve block 3 are actively provided in discharge outlet 9, wherein drain valve Piece 3 allows the draining opening state drained and draining pump semi-load to allow draining and return water when draining when having draining pump loaded displacement Reciprocating movement when open state when closing.

In the technical scheme, due to can actively be provided with draining valve block 3 in discharge outlet 9, and the tool of valve block 3 is drained Reciprocating movement when draining opening state and draining pump semi-load when having draining pump to meet draining drain when closing open state (arrange Water valve plate open and when close when open and can realize in several ways, various ways will be described below in detail in this), this Sample, drain valve block open and when close when a kind of embodiment for opening in, when draining pump full load, the pressure drained upwards is very Greatly, the draining valve block can be made to flip up to maximum angle close to 90 degree and be in draining opening state, as shown in Figure 2, Drainage channel 1 is unimpeded at this time, does not interfere flow；And when draining pump semi-load, then the draining valve block is upward by draining pump simultaneously The pressure that water flows back downwards above the pressure and drainpipe of draining, the two pressure can to drain valve block an equilbrium position Nearby slightly swing, so that draining valve block closes (half-open semi-closure) state when opening when being in a kind of, as shown by the arrows in Figure 3, this Sample can reduce the speed that water inwardly flows back in the speed and drainpipe that water in draining pump discharges simultaneously, make water in draining pump Amount is consistent substantially, to eliminate the semi-load noise issued by the residual water that impeller pats different liquid levels.

Further, while the semi-load noise that elimination is issued by the residual water that impeller pats different liquid levels, it is It is unloaded or when stopping to further avoid draining pump, if the water in drainpipe can not flow back in time and cause to go out in the prior art Existing roller, draining pump and drainpipe forms a linker, and the both ends liquid level of roller and drainpipe is equal, draining pump In bottom, the inside is all air, impeller rotation can only agitation air, and the problem of cannot drain, in the row of the utility model In water pump, draining valve block 3 also has the return water opening state for allowing return water when draining pump stops draining, in this way, draining pump is empty When carrying or stopping, draining valve block 3 can be in draining valve block in return water opening state, such as a kind of embodiment and be turned over downwards It is unrestricted, it is turned over downwards under pressure of return water and is in return water opening state, in this way, the residual water in drainpipe can centainly flow Returning drainage pump in, in draining pump air also centainly can be with discharge pump outside, avoid next time drain when, in roller, draining pump and draining Pipe forms a linker, and the both ends liquid level of roller and drainpipe is equal, and draining pump is in bottom, and the inside is all empty Gas, impeller rotation can only agitation air, and the problem of cannot drain.

Certainly, as described above, draining valve block 3 can be movably arranged as in discharge outlet 9 in several ways, than As in a kind of structure type, draining valve block 3 can be in the setting of stretching in the radial direction of discharge outlet 9, for example, draining valve block 3 can To be connected with motor by power transfer mechanism, it is flexible to be closed and the row of opening that the positive and negative rotation of motor is able to drive draining valve block 3 The mouth of a river 9, certainly, motor are connected with controller, and whether the draining pump that controller is then capable of receiving sensor detection needs fully loaded row Water, semi-load draining or unloaded or stopping, according to the signal that sensor is sent, motor positive and inverse drives draining valve block 3 flexible, thus So that draining valve block 3 be in draining opening state, when close (half-open semi-closure) state or return water opening state when opening.

Alternatively, in another structure type, in order to simplify structure, the structure with reference to shown in Fig. 1-3, draining valve block 3 can be with Fold ground is arranged in discharge outlet 9, in this way, draining valve block 3 is in external impetus (for example, the support shaft being connected to motor is extend into In discharge outlet 9, draining valve block 3 is arranged in support shaft, and motor positive and inverse is then able to drive about 3 valve block of draining and turns down), or It can be turned down under the action of discharge pressure or pressure of return water in drainpipe.

Further, as shown in Figs. 1-3, one end of draining valve block 3 is connected on the wall of discharge outlet 9 and can turn down Return, wherein when draining pump loaded displacement, draining valve block 3 can be under the effect of loaded displacement pressure towards the outside of discharge outlet 9 Fold is to be in draining opening state, in this way, can satisfy the drainage requirement of draining pump full load；When draining pump semi-load drain, Draining valve block 3 can semi-load discharge pressure and pressure of return water effect under reciprocally swinging in when close when open state, in Fig. 3 Shown in arrow, the speed that water inwardly flows back in the speed and drainpipe that water in draining pump discharges can be reduced simultaneously in this way Degree, is consistent water in draining pump substantially, thus eliminate because the residual water that impeller pats different liquid levels issued half Carry noise；Draining pump stop draining when, draining valve block 3 can pressure of return water effect under towards discharge outlet 9 inside fold with In return water opening state, in this way, draining valve block is turned over downwards unrestricted, it is turned over downwards under pressure of return water and is in return water Opening state, in this way, the residual water in drainpipe can centainly flow back in draining pump, air also centainly can be with discharge pump in draining pump Outside, when avoiding drain next time, a linker, the both ends liquid of roller and drainpipe are formd in roller, draining pump and drainpipe Face height is equal, and draining pump be in bottom, and the inside is all air, impeller rotate can only agitation air, and the problem of cannot drain.

Certainly, the one end for draining valve block 3 can be connected in several ways on the wall of discharge outlet 9, for example, draining valve block Interconnecting piece is extended on 3, which can bond or be clamped or screw is connected on the wall of discharge outlet 9, alternatively, as schemed Shown in 4, drains and has extended radially out the portion of extending radially out 11 on valve block 3, extend radially out and be formed with construction opening 12 in portion 11, And it is axially extended on the end face of the wall of discharge outlet 9 have axially mounted raised 13, draining valve block 3 can be located in discharge outlet 9 and Axially mounted raised 13 and construction opening 12 formed assembly, thus by draining valve block 3 be mounted in discharge outlet 9.

In addition, the return after the fold of draining valve block 3 can be realized in several ways, for example, in a kind of form, row After water valve plate 3 is installed with above-mentioned either type, drains and be arranged flexible time between the either side of valve block 3 and the wall of drainage channel 1 Position part such as spring, in this way, spring is compressed or stretched when draining valve block 3 turns down, so as to promote to drain 3 return of valve block.

Alternatively, draining valve block 3 is then formed as elastic piece, such as plastic sheet or silica gel piece, such in another form Draining valve block 3 can be bonded or be connected in drainage channel 1, while be turned down simultaneously under the action of discharge pressure or pressure of return water The return under natural resiliency effect.

Certainly, for water reflux when draining pump of being more convenient for is unloaded or stops, in drainpipe, it is preferable that on draining valve block 3 It is formed with water-guiding hole (not showing in Fig. 4), in this way, draining valve block 3 is turned over downwards when being in return water opening state, return water can be Under the action of gap and water-guiding hole between draining valve block 3 and discharge outlet 9 in quick backflow to draining pump.

In addition, in order to avoid reducing noise reduction effect, and convenient for 3 activity of draining valve block, for example turn down, it is preferable that refer to Fig. 4 Shown in structure, drain valve block 3 area and discharge outlet 9 cross-sectional area between can choose ratio appropriate, for example, row The ratio of the cross-sectional area of the area and discharge outlet 9 of water valve plate 3 is 0.7-0.99, and such ratio is outer draining valve block 3 It the gap formed between circumferential surface and the inner peripheral surface of discharge outlet 9 can be effectively convenient for row while avoiding reduces noise reduction effect 3 activity of water valve plate.Further, draining the area of valve block 3 and the cross-sectional area of discharge outlet 9 is 0.9-0.95.

Certainly, draining valve block 3 and the shape of discharge outlet 9 can be mutually adapted, for example be round, rectangular or triangle etc. Any suitable shape.

In addition, the utility model also provides a kind of drainpipe, with reference to Fig. 2, Fig. 3 and structure shown in Fig. 4, the utility model The drainpipe of offer includes the tube body 2 and draining valve block 3 with drainage channel 1, and one end of drainage channel is formed as connecting To the drainage inlet 4 of the discharge outlet of draining pump, the other end of drainage channel is formed as drain outlet 5, wherein draining valve block 3 can It can be movably arranged as in drainage channel 1 with (two ways will be explained below) in several ways, wherein row Water valve plate 3 have draining pump loaded displacement when allow drain draining opening state and draining pump semi-load drain when allow drain and When open state when closing of the reciprocating movement of return water.

In the technical scheme, due to can actively be provided with draining valve block 3 in drainage channel 1, and valve block 3 is drained With draining pump meet drain when draining opening state and draining pump semi-load draining when reciprocating movement when close when open state (draining valve block open and when close when open and can realize in several ways, various ways will be described below in detail in this), In this way, after the discharge outlet that the drainpipe is connected to the draining pump of washing machine, drain valve block open and when close when one kind for opening In embodiment, when draining pump full load, the pressure drained upwards is very big, and the draining valve block can be made to flip up to maximum angular Degree is in draining opening state close to 90 degree, as shown in Figure 2, drainage channel 1 is unimpeded at this time, does not interfere flow；And as row When water pump semi-load, then water flows back downwards above the pressure and drainpipe that the draining valve block is drained upwards by draining pump simultaneously pressure Power, the two pressure can make draining valve block slightly swing near an equilbrium position, when so that draining valve block being in a kind of (half-open semi-closure) state is closed when opening, as shown by the arrows in Figure 3, the speed that water in draining pump discharges can be reduced simultaneously in this way The speed that water inwardly flows back in degree and drainpipe, is consistent water in draining pump substantially, to eliminate because impeller is patted not The semi-load noise issued with the residual water of liquid level.

Further, while the semi-load noise that elimination is issued by the residual water that impeller pats different liquid levels, it is It is unloaded or when stopping to further avoid draining pump, if the water in drainpipe can not flow back in time and cause to go out in the prior art Existing roller, draining pump and drainpipe forms a linker, and the both ends liquid level of roller and drainpipe is equal, draining pump In bottom, the inside is all air, impeller rotation can only agitation air, and the problem of cannot drain, in the row of the utility model In water pipe, draining valve block 3 also has the return water opening state for allowing return water when draining pump stops draining, in this way, draining pump is empty When carrying or stopping, draining valve block 3 can be in draining valve block in return water opening state, such as a kind of embodiment and be turned over downwards It is unrestricted, it is turned over downwards under pressure of return water and is in return water opening state, in this way, the residual water in drainpipe can centainly flow Returning drainage pump in, in draining pump air also centainly can be with discharge pump outside, avoid next time drain when, in roller, draining pump and draining Pipe forms a linker, and the both ends liquid level of roller and drainpipe is equal, and draining pump is in bottom, and the inside is all empty Gas, impeller rotation can only agitation air, and the problem of cannot drain.

Certainly, as described above, draining valve block 3 can be movably arranged as in drainage channel 1 in several ways, Such as in a kind of structure type, draining valve block 3 can be in the setting of stretching in the radial direction of drainage channel 1, for example, draining valve block 3 can be connected with motor by power transfer mechanism, and it is flexible to be closed and open that the positive and negative rotation of motor is able to drive draining valve block 3 Drainage channel 1, certainly, motor are connected with controller, and it is full whether the draining pump that controller is then capable of receiving sensor detection needs Draining, semi-load draining or unloaded or stopping are carried, according to the signal that sensor is sent, motor positive and inverse drives draining valve block 3 flexible, So that draining valve block 3 be in draining opening state, when close (half-open semi-closure) state or return water opening state when opening.

Alternatively, in another structure type, in order to simplify structure, the structure with reference to shown in Fig. 1-3, draining valve block 3 can be with Fold ground is arranged in drainage channel 1, in this way, draining valve block 3 is in external impetus (for example, the support shaft being connected to motor protrudes into Into drainage channel 1, draining valve block 3 is arranged in support shaft, and motor positive and inverse is then able to drive about 3 valve block of draining and turns down), Or it can be turned down under the action of discharge pressure or pressure of return water in drainpipe.

Further, as shown in Figs. 1-3, one end of draining valve block 3 is connected on the wall of drainage channel 1 and can turn over Fold-back position, wherein when draining pump loaded displacement, draining valve block 3 can be turned under the effect of loaded displacement pressure towards drain outlet 5 Folding is to be in draining opening state, in this way, can satisfy the drainage requirement of draining pump full load；When draining pump semi-load drain, row Water valve plate 3 can semi-load discharge pressure and pressure of return water effect under reciprocally swinging in when close when open state, such as arrow in Fig. 3 Shown in head, the speed that water inwardly flows back in the speed and drainpipe that water in draining pump discharges can be reduced simultaneously in this way, It is consistent water in draining pump substantially, to eliminate because the semi-load that the residual water that impeller pats different liquid levels is issued make an uproar Sound；When draining pump stops draining, draining valve block 3 can be turned down under pressure of return water effect towards drainage inlet 4 to be in return water Opening state is turned over downwards under pressure of return water in this way, draining valve block is turned over downwards unrestricted and is in return water open shape State, in this way, the residual water in drainpipe can centainly flow back in draining pump, in draining pump air also centainly can be with discharge pump outside, keep away When exempting from draining next time, a linker, the both ends liquid level of roller and drainpipe are formd in roller, draining pump and drainpipe Equal, draining pump is in bottom, and the inside is all air, impeller rotation can only agitation air, and the problem of cannot drain.

Certainly, the one end for draining valve block 3 can be connected in several ways on the wall of drainage channel 1, for example, drain valve It is extended with interconnecting piece on piece 3, which can bond or be clamped or screw is connected on the wall of drainage channel 1, alternatively, It is as shown in Figure 4, it drains and has extended radially out the portion of extending radially out 11 on valve block 3, extend radially out and be formed with installation in portion 11 and open Mouthfuls 12, and it is axially extended on the end face of the wall of tube body 2 have axially mounted raised 13, draining valve block 3 can be located in drainage channel 1 And axially mounted raised 13 and construction opening 12 formed assembly, thus by draining valve block 3 be mounted in drainage channel 1.

In addition, the return after the fold of draining valve block 3 can be realized in several ways, for example, in a kind of form, row After water valve plate 3 is installed with above-mentioned either type, drains and be arranged flexible time between the either side of valve block 3 and the wall of drainage channel 1 Position part such as spring, in this way, spring is compressed or stretched when draining valve block 3 turns down, so as to promote to drain 3 return of valve block.

Alternatively, draining valve block 3 is then formed as elastic piece, such as plastic sheet or silica gel piece, such in another form Draining valve block 3 can be bonded or be connected in drainage channel 1, while be turned down simultaneously under the action of discharge pressure or pressure of return water The return under natural resiliency effect.

Certainly, for water reflux when draining pump of being more convenient for is unloaded or stops, in drainpipe, it is preferable that on draining valve block 3 It is formed with water-guiding hole (not showing in Fig. 4), in this way, draining valve block 3 is turned over downwards when being in return water opening state, return water can be Under the action of gap and water-guiding hole between draining valve block 3 and drainage channel 1 in quick backflow to draining pump.

In addition, in order to avoid reducing noise reduction effect, and convenient for 3 activity of draining valve block, for example turn down, it is preferable that refer to Fig. 4 Shown in structure, drain valve block 3 area and drainage channel 1 cross-sectional area between can choose ratio appropriate, for example, The ratio for draining the area of valve block 3 and the cross-sectional area of drainage channel 1 is 0.7-0.99, and such ratio is in draining valve block 3 Outer peripheral surface and drainage channel 1 inner peripheral surface between the gap that is formed can be effectively while avoiding reduces noise reduction effect Convenient for 3 activity of draining valve block.Further, draining the area of valve block 3 and the cross-sectional area of drainage channel 1 is 0.9- 0.95。

Certainly, draining valve block 3 and the shape of drainage channel 1 can be mutually adapted, for example be round, rectangular or triangle Etc. any suitable shape.

In addition, the utility model provides a kind of draining pump, the structure with reference to shown in Fig. 1-3, the draining pump includes accommodating The drainage cavity 7 of impeller 6, drainage cavity 7 have water inlet 8 and discharge outlet 9, and the drainage inlet 4 of drainpipe described in any of the above It is connected with discharge outlet 9.

In this way, as described above, in the draining pump semi-load, the draining valve block in drainpipe closes when opening when being in a kind of Such as fold is swung (half-open semi-closure) state up and down, can reduce the speed and draining that water in draining pump discharges simultaneously in this way The speed that water inwardly flows back in managing, is consistent water in draining pump substantially, to eliminate because impeller pats different liquid levels height The semi-load noise that the residual water of degree is issued.Further, after the draining pump is applied on washing machine, it can be promoted and be washed significantly The overall quality of clothing machine.

Certainly, which can releasably connect with discharge outlet 9, it is, drainpipe and draining pump are individual portion Part when need to use connects drainpipe with draining pump；

Alternatively, selectively, the wall of drainage inlet 4 and the wall of discharge outlet 9 are integrally formed, so that drainpipe is directly as row The discharge ends for being connect with external pipe of water pump, it is, being extended with draining pipeline section on the shell of draining pump integrally to make For the discharge ends of draining pump, and above-mentioned draining valve block is then arranged in the discharge ends, and similarly, which can rise To function identical with the draining valve block in above-mentioned drainpipe.

Finally, the utility model provides a kind of washing machine, wherein be provided in the drainage flow path of the washing machine to take up an official post The meaning draining pump 10；Alternatively, the draining pump in the drainage flow path of the washing machine is connected with above-described drainpipe.This Sample, as described above, the overall quality of the washing machine are significantly improved.

Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.

It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the utility model is to each No further explanation will be given for the possible combination of kind.

In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.

Claims (10)

1. a kind of draining pump, the drainage cavity (7) including accommodating impeller (6), the drainage cavity (7) have water inlet (8) and arrange The mouth of a river (9), which is characterized in that draining valve block (3) is actively provided in the discharge outlet (9), wherein the draining valve block (3) with draining pump loaded displacement the draining opening state drained and draining pump semi-load is allowed to allow draining and return water when draining when Reciprocating movement when open state when closing.

2. draining pump according to claim 1, which is characterized in that the draining valve block (3) also has to stop in draining pump Allow the return water opening state of return water when draining.

3. draining pump according to claim 2, which is characterized in that draining valve block (3) fold ground is arranged in the row In the mouth of a river (9).

4. draining pump according to claim 3, which is characterized in that one end of draining valve block (3) is connected to the row On the wall at the mouth of a river (9) and return can be turned down, wherein

When draining pump loaded displacement, the draining valve block (3) can be under the effect of loaded displacement pressure towards the discharge outlet (9) External fold in draining opening state；

When draining pump semi-load drain, the draining valve block (3) can be under semi-load discharge pressure and pressure of return water effect toward physical pendulum It is dynamic in when close when open state；

When draining pump stops draining, draining valve block (3) can be under pressure of return water effect towards the interior of the discharge outlet (9) Portion's fold is to be in return water opening state.

5. draining pump according to claim 4, which is characterized in that the draining valve block (3) is elastic piece.

6. draining pump described in any one of -5 according to claim 1, which is characterized in that the area of draining valve block (3) Ratio with the cross-sectional area of the discharge outlet (9) is 0.7-0.99.

7. draining pump according to claim 6, which is characterized in that the ratio is 0.9-0.95.

8. a kind of drainpipe including the tube body (2) with drainage channel (1) and drains valve block (3), one end of the drainage channel It is formed for connection to the drainage inlet (4) of the discharge outlet of draining pump, the other end of the drainage channel is formed as draining out Mouth (5), which is characterized in that the draining valve block (3) can be movably arranged as in the drainage channel (1), wherein the row Water valve plate (3) allows the draining opening state drained and draining pump semi-load to allow to drain when draining when having draining pump loaded displacement With the reciprocating movement of return water when close when open state.

9. a kind of draining pump, the drainage cavity (7) including accommodating impeller (6), the drainage cavity (7) have water inlet (8) and arrange The mouth of a river (9), which is characterized in that the drainage inlet (4) and the discharge outlet (9) of drainpipe according to claim 8 connect.

10. a kind of washing machine, which is characterized in that be provided in the drainage flow path of the washing machine and appoint in -7 according to claim 1 Draining pump (10) described in meaning one；

Alternatively, the draining pump in the drainage flow path of the washing machine is connected with drainpipe according to claim 8；

Alternatively, being provided with draining pump according to claim 9 (10) in the drainage flow path of the washing machine.